reference signal sending and receiving method, network device, terminal device, and system

专利摘要:
This application provides a method of sending and receiving a reference signal, a network device, a terminal device and a system, to be applicable to the resource configuration for an SRS in NR. The method includes: sending an SRS polling reference signal via a terminal device based on the location of an initial subcarrier to transmit the SRS, where the location of the initial subcarrier to transmit the SRS is determined by an offset from a region of polling, the polling region offset indicates a resource offset between an initial polling region subcarrier and an initial subcarrier of a BWP bandwidth portion of the end device, and the polling region is a resource that can be used to transmit the SRS.
公开号:BR112020002907A2
申请号:R112020002907-6
申请日:2018-08-07
公开日:2020-08-04
发明作者:Mengying Ding；Yuanzhou HU；Yi Qin；Zhongfeng Li；Min Zhang；Weimin Xiao；Shengyue Dou
申请人:Huawei Technologies Co., Ltd.；
IPC主号:

专利说明:

[001] [001] This request refers to the communications field and, more specifically, to a method of sending and receiving a reference signal, a network device, a terminal device and a system. FUNDAMENTALS
[002] [002] A sounding reference signal, SRS, is a reference signal for measuring an uplink channel. A network device measures an uplink channel based on an SRS sent by a terminal device, to obtain uplink channel channel status information (CSI), thereby facilitating uplink resource scheduling.
[003] [003] In a long-term evolution system (Long Term Evolution, LTE), the uplink system bandwidth can be divided into two parts, where regions on both sides of the uplink system bandwidth are used to send a physical uplink shared channel, PUCCH, and a region in the middle of the uplink system bandwidth is used to send a physical uplink shared channel , PUSCH). Since the transmission capabilities of terminal devices in LTE are the same, the size of a resource (or sounding region) for transmitting an SRS is cell specific, and the probe regions of any two terminal devices in the same cell are the same. The terminal device sends a
[004] [004] However, in some communication systems, for example, in a new radio access technology (NR) of a fifth generation communications system (fifth generation, 5G), because the capabilities of transmission of terminal devices are different, probing regions corresponding to different terminal devices in the same cell may be different. Therefore, the survey regions are not cell specific, but are specific to user equipment (UE). SUMMARY
[005] [005] This application provides a reference signal sending and receiving method, a network device, a terminal device and a system, to be applicable to the resource configuration for an SRS in NR.
[006] [006] According to a first aspect, a method of sending a reference signal is provided and includes: determining, by a terminal device based on a displacement, a location of an initial subcarrier to transmit an SRS, where the displacement is a resource offset between an initial subcarrier of a polling region and an initial subcarrier of the transmission bandwidth of a bandwidth part (BWP) of the terminal device, and the offset is determined based on a mode predefined resource configuration; and send, via the terminal device, the SRS based on the location of the initial subcarrier to transmit the SRS.
[007] [007] The polling region can be a resource configured for the terminal device to transmit the SRS, or it can be a region that is in the uplink system bandwidth (more specifically, in the BWP) and in which the terminal device can perform channel polling using the SRS. The polling region can be understood as a channel state information resource (CSI) region that needs to be obtained by a network device or a resource region that can be used by the terminal device to send the SRS.
[008] [008] Therefore, in this modality of this request, the location of the initial subcarrier to transmit the SRS by the terminal device is determined based on the BWP of the terminal device in NR, and the SRS is transmitted based on the location of the initial subcarrier, so that a resource that is configured for each terminal device to transmit an SRS is specific to user equipment (user equipment, UE), and the resource to transmit the SRS can be configured based on the transmission or reception capacity of each terminal device and one requirement for the measured bandwidth. Thus, this order is more suitable for an NR scenario. In addition, an interval type is not limited in the method for determining the location of the initial subcarrier for transmitting the SRS provided in this embodiment of this request.
[009] [009] With reference to the first aspect, in some implementations of the first aspect, the default resource configuration mode is determined from a plurality of predefined resource configuration modes, and the plurality of predefined resource configuration modes correspond to a plurality of displacements.
[0010] [0010] Therefore, a plurality of terminal devices in the same cell can configure a transmission resource of an SRS based on different offsets, so that the network device can perform channel measurement on total BWP bandwidth resources, to perform resource escalation.
[0011] [0011] In addition, in a system with "channel reciprocity", the network device can implement full bandwidth measurement in the BWP. This is more conducive to estimating the CSI of a downlink channel, thus facilitating resource scaling.
[0012] [0012] Based on the two previous resources, compared to the LTE SRS resource configuration mode, the method provided in this application helps the network device to scale more resources, thereby improving resource utilization.
[0013] [0013] With reference to the first aspect, in some implementations of the first aspect, the method also includes: obtaining, by the terminal device, an Index value of the predefined resource configuration mode, where the Index value is used to determine the mode resource configuration modes and the plurality of predefined resource configuration modes are in one-to-one correspondence with a plurality of index values.
[0014] [0014] The terminal device can obtain the value of
[0015] [0015] Method 1: The terminal device receives the first information, where the first information includes the index value of the predefined resource configuration mode.
[0016] [0016] Method 2: The terminal device determines the index value of the predefined resource configuration mode based on any one of the system frame number, interval number or combined mapping location (“comb mapping”).
[0017] [0017] According to a second aspect, a reference signal reception method is provided and includes: determining, by a network device based on an offset, a location of an initial subcarrier to transmit an SRS, where the offset is a resource offset between an initial subcarrier of a polling region and an initial subcarrier of the transmission bandwidth of a BWP from a terminal device, and the offset is determined based on a predefined resource configuration mode; and receiving, by the network device, the SRS from the terminal device based on the location of the initial subcarrier to transmit the SRS.
[0018] [0018] The polling region is a region in which the terminal device conducts channel polling using the SRS. The polling region can be understood as a channel state information resource (CSI) region that needs to be obtained by the network device, or a resource region that can be used by the terminal device to send the SRS.
[0019] [0019] Therefore, in this embodiment of this request, the location of the initial subcarrier for transmitting the SRS by the terminal device is determined based on the BWP of the terminal device in NR, and the SRS is transmitted based on the location of the initial subcarrier, so that a resource that is configured for each terminal device to transmit an SRS is specific to UE, and the resource to transmit the SRS can be configured based on the transmission or reception capacity of each terminal device and a requirement for measured bandwidth. Thus, this order is more suitable for an NR scenario. In addition, an interval type is not limited in the method for determining the location of the initial subcarrier for transmitting the SRS provided in this embodiment of this request.
[0020] [0020] With reference to the second aspect, in some implementations of the second aspect, the default resource configuration mode is determined from a plurality of predefined resource configuration modes, and the plurality of predefined resource configuration modes correspond to a plurality of displacements.
[0021] [0021] Therefore, a plurality of terminal devices in the same cell can configure a transmission resource of an SRS based on different offsets, so that the network device can perform channel measurement on total BWP bandwidth resources, to perform resource escalation.
[0022] [0022] In addition, in a system with "channel reciprocity", the network device can implement full bandwidth measurement in the BWP. This is more conducive to estimating the CSI of a downlink channel, thus facilitating resource scaling.
[0023] [0023] Based on the two previous resources, compared to the LTE SRS resource configuration mode, the method provided in this application helps the network device to scale more resources, thereby improving resource utilization.
[0024] [0024] With reference to the second aspect, in some implementations of the second aspect, the method further includes: determining, by the terminal device, an Index value of the predefined resource configuration mode based on any one of a system frame number , a range number or a combined mapping location, where the index value is used to determine the resource configuration mode, and the plurality of predefined resource configuration modes are in a one-to-one correspondence with a plurality of index values.
[0025] [0025] With reference to the second aspect, in some implementations of the second aspect, the method also includes: sending, by the network device, first information, where the first information includes an index value of the predefined resource configuration mode.
[0026] [0026] According to a third aspect, a terminal device is provided and includes a determination module and a transceiver module, in order to carry out the method in the first aspect or any possible implementation of the first aspect. The determination module is configured to perform a function related to determination, and the transceiver module is configured to perform a function related to reception and sending.
[0027] [0027] According to a fourth aspect, a network device is provided and includes a determination module and a transceiver module, in order to carry out the method in the second aspect or any possible implementation of the second aspect. The determination module is configured to perform a function related to determination, and the transceiver module is configured to perform a function related to reception and sending.
[0028] [0028] According to a fifth aspect, a terminal device is provided, and includes a processor, a memory and a transceiver. The memory is configured to store a computer program, and the processor is configured to call the computer program from memory and run the computer program, to control the transceiver to receive and send a signal, so that the terminal device performs the method in the first aspect or any possible implementation of the first aspect.
[0029] [0029] According to a sixth aspect, a network device is provided and includes a processor, a memory and a transceiver. The memory is configured to store a computer program, and the processor is configured to call the computer program from memory and run the computer program, to control the transceiver to receive and send a signal, so that the network device perform the method on the second aspect or any possible implementation of the second aspect.
[0030] [0030] Optionally, there are one or more processors, and there are one or more memories.
[0031] [0031] Optionally, the memory can be integrated with the processor or the memory and the processor are disposed separately.
[0032] [0032] According to a seventh aspect, a system is provided, and the system includes the anterior terminal device and the anterior network device.
[0033] [0033] In any of the previous aspects, optionally, the plurality of resource configuration modes is in a one-to-one correspondence with a plurality of formulas, each formula is used to determine an offset, and the plurality of formulas includes: Formula 1: KR = (NH Mes [1 / 4N,) NE +; and Formula 2: k = k.
[0034] [0034] ki "indicates the offset, Ni indicates a number of blocks of RBs resources included in the transmission bandwidth of the BWP of the terminal device, ms, indicates a number of RBs used by the terminal device to transmit an SRS once, B ,, is an EU user equipment specific SRS bandwidth configuration parameter, each B. ,, indicates a set of parameters m .. ,, EN ,, b = BÓ, b is an integer, N, indicates the number of times required to send an SRS through the terminal device to measure the bandwidth Msas547 b 'Is it a value obtained when crossing [0, b], N3 indicates a number of subcarriers included in each RB, and ki is used to determine a combined mapping location. For the sake of brevity, descriptions of the same parameters are omitted below.
[0035] [0035] In this project, different offsets are configured for different terminal devices, so that the transmission of the total bandwidth of an SRS can be implemented in the BWP, to carry out uplink channel measurement and resource scaling in the resources of total BWP bandwidth. In addition, the network device can estimate CSI of a downlink channel using channel reciprocity, to perform resource scaling. Therefore, this design helps the network device to scale more resources, thus improving resource utilization.
[0036] [0036] In any of the previous aspects, optionally, the displacement is determined according to the following formula: Formula 3: RM = ([NE / 2 | masa [1, oN, / 2NE +,
[0037] [0037] In this project, considering the possibility that a PUCCH can be configured on both sides of the BWP in NR, the survey region is configured in the middle of the BWP. In the BWP, if the polling region is shifted towards one of the two sides of the BWP, no SRS will be transmitted on a portion of the bandwidth resources, and channel measurement or resource scaling cannot be performed. Consequently, that part of the resources is idle and wasted. The configuration is carried out using the previous formula, so that idle resources can be reduced, thus improving resource utilization. In addition, the unnecessary sending of SRS can be reduced, thus reducing power consumption.
[0038] [0038] In any of the previous aspects, optionally, the plurality of resource configuration modes is in a one-to-one correspondence with a plurality of formulas, each formula is used to determine an offset, and the plurality of formulas includes:
[0039] [0039] In this project, the transmission of total bandwidth of an SRS can be implemented in the BWP, to perform measurement and channel scaling in the total bandwidth resources of the BWP. In addition, it is considered a possibility that a PUCCH can be configured on both sides of the BWP in NR, thus reducing idle resources and improving resource utilization.
[0040] [0040] In any of the previous aspects, optionally, the plurality of resource configuration modes is in a one-to-one correspondence with a plurality of formulas, each formula is used to determine an offset, and the plurality of formulas includes: Formula 2: kKP = kP; and Formula 4: KI ”= (Ni; mas, INS + kio.
[0041] [0041] k "indicates the offset, NH indicates a number of blocks of RB resources included in the BWP transmission bandwidth of the terminal device, | indicates rounding down, mssã, indicates a maximum value of ms ... Ma. indicates a number of RBs included in the polling region NÃ indicates a number of subcarriers included in each RB, and k is used to determine a combined mapping location. For the sake of brevity, descriptions of the same parameters are omitted below.
[0042] [0042] In this project, a bandwidth size of an LTE polling region is still used. That is, for a polling bandwidth size configured for the terminal device, refer to the polling bandwidth size in LTE, for example, 96 RBs or 80 RBs. Therefore, an LTE protocol is modified relatively slightly. In the meantime, different “offsets can be configured for different end devices using the previous formulas, so that the total bandwidth transmission of an SRS can be implemented in the BWP, to perform uplink channel measurement and resource scaling. on BWP's total bandwidth capabilities. In addition, the network device can estimate CSI of a downlink channel using channel reciprocity, to perform resource scaling. Therefore, this design helps the network device to scale more resources, thus improving resource utilization.
[0043] [0043] Optionally, in any of the previous aspects, the displacement is determined according to the following formula: Formula 5: k / ”= (| NÃ / 2 | - = msso / 2) NS +
[0044] [0044] kW ”indicates the offset, Nr indicates a number of blocks of RB resources included in the BWP transmission bandwidth of the terminal device, | indicates rounding down, m .., indicates a number of RBs included in the survey region, No. indicates a number of subcarriers included in each RB, and k is used to determine a combined mapping location.
[0045] [0045] In this project, a bandwidth size of an LTE polling region is still used. In addition, considering the possibility that a PUCCH can be configured on both sides of the BWP in NR, the polling region is configured in the middle of the BWP. In the BWP, if the polling region is shifted towards one of the two sides of the BWP, no SRS will be transmitted on a portion of the bandwidth resources, and channel measurement or resource scaling cannot be performed. Consequently, that part of the resources is idle and wasted. The configuration is carried out using the previous formula, so that idle resources can be reduced, thus improving resource utilization. In addition, the unnecessary sending of SRS can be reduced, thus reducing power consumption.
[0046] [0046] In any of the previous aspects, optionally, the plurality of resource configuration modes is in a one-to-one correspondence with a plurality of formulas, each formula is used to determine an offset, and the plurality of formulas includes: Formula 2: KM = ki ; Formula 4: KR = (Nif —m3 $ 8, NY + kil; and Formula 5: k / ”= (| NÃ / 2 | - = msso / 2) NS +
[0047] [0047] In this project, a bandwidth size of an LTE polling region is still used, and the transmission of the total bandwidth of an SRS can be implemented in the BWP, to perform measurement and channel scaling in the resources of total BWP bandwidth. In addition, it is considered a possibility that a PUCCH can be configured on both sides of the BWP in NR, thus reducing idle resources and improving resource utilization.
[0048] [0048] Based on the previous technical solutions, in the modalities of this request, the location of the initial subcarrier for transmitting the SRS by the terminal device is determined based on the BWP of the terminal device in NR. Thus, this order is more suitable for an NR scenario. In addition, different offsets can be configured for different end devices, so that a plurality of end devices in the same cell can transmit an SRS based on different offsets, to implement the full bandwidth transmission of an SRS in the BWP, so that the network device can perform channel measurement on full BWP bandwidth resources. In addition, the total bandwidth CSI of a downlink channel can be estimated using channel reciprocity. Compared to the SRS LTE resource configuration mode, more channels can be measured, making it easier to scale more resources and improving resource utilization.
[0049] [0049] In accordance with an eighth aspect, a method of sending a reference signal is provided and includes: sending, through a terminal device, an SRS polling reference signal based on the location of an initial subcarrier to transmit the SRS, where the location of the initial subcarrier to transmit the SRS is determined by an offset from a polling region, the offset from the polling region is a resource offset between an initial subcarrier of the polling region and an initial subcarrier of the transmission bandwidth of a portion of the terminal device's BWP bandwidth, and the polling region is a configured feature for the terminal device to transmit the SRS.
[0050] [0050] The polling region can be a region that is in the uplink system bandwidth
[0051] [0051] Therefore, in this modality of this request, the location of the initial subcarrier to transmit the SRS by the terminal device is determined based on the BWP of the terminal device in NR, and the SRS is transmitted based on the location of the initial subcarrier, so that a resource that is configured for each terminal device to transmit an SRS is specific to UE, and the resource to transmit the SRS can be configured based on the transmission or reception capacity of each terminal device and a requirement for measured bandwidth. Thus, this order is more suitable for an NR scenario. In addition, an interval type is not limited in the method for determining the location of the initial subcarrier for transmitting the SRS provided in this embodiment of this request.
[0052] [0052] With reference to the eighth aspect, in some implementations of the eighth aspect, the displacement of the survey region satisfies Formula 6: k ”= kNX + k /, where ki” indicates the displacement of the survey region, No. number of subcarriers included in each RB resource block, ki ”is used to determine a combined mapping location, and k” indicates a number of RBs between an RB in which the initial subcarrier of the drill region is located and an initial RB of the width of BWP transmission band, where k '”" belongs to [0, NINE], k ”is an integer, No. indicates a number of RBs included in the terminal device's BWP transmission bandwidth, No. indicates a number of RBs included in the polling region, ek ”satisfies mod [l (k!” + Ni ,,) nl = A, where mod indicates a module operation, Ny, indicates an amount of RBs between the initial RB of the bandwidth of BWP transmission and an initial system bandwidth RB, A belongs to [0 , n-1], and A is an integer. Optionally, the method also includes: receiving, by the terminal device, information indicating a value of k ”, where information indicating a value of k” indicates a value of k ”.
[0053] [0053] Optionally, the k ”indication information is carried in upper layer signaling. The upper layer signaling can include, for example, a radio resource control message (Radio Resource Control, RRC) or a media access control element (Control Element, CE) (Media Access Control, MAC) .
[0054] [0054] With reference to the eighth aspect, in some implementations of the eighth aspect, the displacement of the survey region satisfies Formula 7: k '”= (nk" ”+ K,) NZ + k , where ki” indicates the displacement of the survey region, No. indicates a number of subcarriers included in each RB, ki is used to determine a combined mapping location, and nk ”+ K, indicates a number of RBs among an RB in which the initial subcarrier of the region of poll is located and an initial RB of the BWP bandwidth, where K, is any value in [0, n-1], k ”is any value in
[0055] [0055] Optionally, the method also includes: receiving, by the terminal device, information indicating a value of k ", where the information indicating a value of k" indicates a value of k "; and receiving, by the terminal device , information indicating a value of K ,, where information indicating a value of K indicates a value of K ,.
[0056] [0056] Optionally, the k ”indication information is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[0057] [0057] Optionally, the K indication information is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[0058] [0058] It should be understood that, the information of indication of k ”and information of indication of K, can be carried in the same part of signaling of upper layer or signaling of different layer. This is not limited in this order.
[0059] [0059] Based on the previous project, the capability to transmit the SRS can be controlled over a BWP interval, to avoid an issue that the channel measurement accuracy is reduced because the SRS cannot be fully mapped to the BWP, thereby improving demodulation performance. In addition, the different A is configured for terminal devices or antenna ports that are configured with different - combination parameters, so that the terminal devices or antenna ports that are configured with different combination parameters can send an SRS in different frequency bands system bandwidth, and it is possible for the network device to implement total bandwidth measurement, thereby improving data transmission performance for the entire bandwidth and improving resource utilization and scaling flexibility. resource.
[0060] [0060] With reference to the possible previous implementations, in some possible implementations, optionally, the method also includes: receiving, by the terminal device, information indicating a value of Ny, Where the information indicating a value of Nu, indicates a Nu value.
[0061] [0061] Optionally, the information indicating a Ni value is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[0062] [0062] It should be understood that the aforementioned upper layer signaling to carry various types of indication information is merely an example of description, but should not constitute any limitation for this request.
[0063] [0063] With reference to the eighth aspect, in some implementations of the eighth aspect, a value of 4.
[0064] [0064] It can be learned from a simulation experiment that when an overlapping part of the frequency domain resources used by different terminal devices to transmit an SRS is greater than or equal to an integer multiple of n RBs, or when a part overlapping of SRS frequency domain resources that correspond to different ports is greater than or equal to 4 RBs, channel measurement accuracy is greatly improved, and better demodulation performance is possible. Therefore, it is expected that the overlapping part of the resource can be controlled with more than 4 RBs.
[0065] [0065] With reference to the eighth aspect, in some implementations of the eighth aspect, the method also includes: determining, by the terminal device based on the displacement of the drilling region, the location of the initial subcarrier to transmit the SRS.
[0066] [0066] In accordance with a ninth aspect, a reference signal receiving method is provided and includes: receiving, by a network device, an SRS polling reference signal from a terminal device based on the location of a initial subcarrier to transmit the SRS, where the location of the initial subcarrier to transmit the SRS is determined by an offset from a polling region, the offset from the polling region is a resource offset between an initial subcarrier from the polling region and a subcarrier initial transmission bandwidth of a portion of the terminal device's BWP bandwidth, and the poll region is a resource that can be used to transmit the SRS.
[0067] [0067] Therefore, in this modality of this request, the location of the initial subcarrier to transmit the SRS by the terminal device is determined based on the BWP of the terminal device in NR, and the SRS is transmitted based on the location of the initial subcarrier, so that a resource that is configured for each terminal device to transmit an SRS is specific to UE, and the resource to transmit the SRS can be configured based on the transmission or reception capacity of each terminal device and a requirement for measured bandwidth. Thus, this order is more suitable for an NR scenario. In addition, an interval type is not limited in the method for determining the location of the initial subcarrier for transmitting the SRS provided in this embodiment of this request.
[0068] [0068] With reference to the ninth aspect, in some implementations of the ninth aspect, the displacement of the survey region satisfies Formula 6: k ”= kNE + k! , Where ki” indicates the displacement of the survey region, No. number of subcarriers included in each RB resource block, ki "is used to determine a combined mapping location, and k" indicates a number of RBs between an RB in which the initial subcarrier of the drill region is located and an initial RB of width BWP broadcast bandwidth, where k! ” belongs to [0, NÚ — NHS], kP is an integer, NÃ indicates a number of RBs included in the BWP transmission bandwidth of the terminal device, NX indicates a number of RBs included in the polling region, and k ”satisfies mod [(k "” + Ni ,,) nl = A, where mod indicates a module operation, Nx, indicates an amount of RBs between the initial RB of the BWP transmission bandwidth and an initial RB of the bandwidth system, A belongs to [0, n-1], and A is an integer.
[0069] [0069] Optionally, the method also includes: sending, through the network device, information indicating a value of k "", where information indicating a value of k "
[0070] [0070] Optionally, the k ”indication information is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[0071] [0071] With reference to the ninth aspect, in some implementations of the ninth aspect, the displacement meets Formula 7: k ”= (nk” + K,) N & + ki , where k ”indicates the displacement of the survey region, No. indicates a number of subcarriers included in each RB, ki is used to determine a combined mapping location, and nk ”+ K, indicates an amount of RBs between an RB in which the initial subcarrier of the polling region is located and an initial RB of the BWP bandwidth, where K, is any value in [0, n-1], k ”is any value in [0, | (NE-NE-KQ / n |] l, and both K, and k” are integers.
[0072] [0072] Optionally, the method also includes: sending, through the network device, information indicating a value of k "" ", where information indicating a value of k '" indicates a value of k "; and sending , by the network device, information indicating a value of K ,, where information indicating a value of K indicates a value of K ,.
[0073] [0073] Optionally, the information indicating a value of k ”is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[0074] [0074] Optionally, the information indicating a value of K, is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[0075] [0075] Optionally, the information indicating a value of k ”and the information indicating a value of K, can be carried in the same RRC message or in different RRC messages. This is not limited in this order. Based on the previous design, the capability to transmit the SRS can be controlled over a range of the BWP, to avoid a problem that the channel measurement accuracy is reduced because the SRS cannot be fully mapped to the BWP, thereby improving demodulation performance. In addition, the different A is configured for terminal devices or antenna ports that are configured with different combination parameters, so that the terminal devices or antenna ports that are configured with different combination parameters can send an SRS in different frequency bands of the system bandwidth, and it is possible for the network device to implement full bandwidth measurement, thereby improving data transmission performance for the entire bandwidth and improving resource utilization and resource scaling flexibility .
[0076] [0076] With reference to previous possible implementations, in some possible implementations, optionally, the method also includes: receiving, by the terminal device, information indicating a value of Ny, Where the information indicating a value of Nu, indicates a Nu value.
[0077] [0077] Optionally, the Ny indication information is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[0078] [0078] It should be understood that the previous signaling to carry various types of indication information is merely an example of description, but should not constitute any limitation for this request.
[0079] [0079] With reference to the ninth aspect, in some implementations of the ninth aspect, a value of n is 4.
[0080] [0080] It can be learned from a simulation experiment that when an overlapping part of the frequency domain resources used by different terminal devices to transmit an SRS is greater than or equal to an integer multiple of n RBs, or when an overlapping part of the domain control capabilities of an SRS that correspond to different ports is greater than or equal to 4 RBs, channel measurement accuracy is greatly improved and better demodulation performance is possible. Therefore, it is expected that the overlapping part of the resource can be controlled with more than 4 RBs.
[0081] [0081] With reference to the ninth aspect, in some implementations of the ninth aspect, the method also includes: determining, by the network device based on the displacement of the survey region, the location of the initial subcarrier to transmit the SRS.
[0082] [0082] In accordance with a tenth aspect, a method of sending a reference signal is provided and includes: sending, through a network device, a CSI-RS channel status information reference signal based on an initial location of frequency domain of a resource to transmit the CSI-RS, where the initial location of the frequency domain resource for transmission of the CSI-RS is determined by a displacement of a pilot region, the displacement of the pilot region indicates a displacement of resource between an initial RB resource block from the pilot region and an initial RB from a BWP bandwidth portion of a terminal device, or the offset from the pilot region indicates a resource offset between an initial RB from the pilot region and an initial RB from system bandwidth, and the pilot region is a resource that can be used to transmit CSI-RS.
[0083] [0083] Based on the technical solution above, in this modality of this request, an initial RB to receive the CSI-RS by the terminal device is determined based on the BWP of the terminal device in NR, and the CSI-RS is transmitted based on the RB initial, so that the terminal device can receive the CSI-RS from the network device based on a location and BWP size of the terminal device. Thus, this order is more suitable for an NR scenario.
[0084] [0084] With reference to the tenth aspect, in some implementations of the tenth aspect, the method also includes: sending, by the network device, information of indication of a first displacement k ,, where the information of indication of the first displacement k, indicates a value of k., € & the first shift k, indicates an amount of RBs between the initial RB of the pilot region and the initial RB of the BWP.
[0085] [0085] Optionally, the information of indication of the first displacement k, is carried in signaling of upper layer. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[0086] [0086] With reference to the tenth aspect, in some implementations of the tenth aspect, the method also includes: sending, through the network device, information indicating a second displacement T, where the information indicating the second displacement T, indicates a value of T, j and send, through the network device, information indicating a third displacement k, where the information indicating the third displacement k indicates a value of k, where the second displacement T, indicates a number of RBs between an RB initial of a mappable location in the pilot region and the initial RB of the BWP, and the third k offset, is used to indicate an amount of RBs between an initial RB of a mapping location in the pilot region and the initial RB of the mapped location in the region pilot.
[0087] [0087] Optionally, the information of indication of the second displacement T, and the information of indication of the third displacement k, are carried in signaling of upper layer. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[0088] [0088] It should be understood that the upper layer signaling to carry the indication information of the second offset 7, and the upper layer signaling to carry the indication information of the third offset k can be the same upper layer signaling part, or they can be different top layer signage. This is not limited in this order.
[0089] [0089] In the two previous implementations of indicating the displacement of the pilot region, the displacement of the pilot region can be represented by a displacement relative to the initial BWP RB.
[0090] [0090] With reference to the tenth aspect, in some implementations of the tenth aspect, the method also includes: sending, through the network device, information indicating the initial location of the pilot region, where the information indicating the initial location indicates a number of RB corresponding to an initial RB to transmit the reference signal in the system bandwidth.
[0091] [0091] Optionally, the information indicating the initial location of the pilot region is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[0092] [0092] In this implementation of indicating the displacement of the pilot region, the displacement of the pilot region can be represented by a displacement relative to the initial RB of the system bandwidth.
[0093] [0093] With reference to the tenth aspect, in some implementations of the tenth aspect, the method also includes: sending, through the network device, information indicating a reference signal location, where the information indicating the reference signal location indicates a RB to transmit the CSI-RS in the pilot region.
[0094] [0094] Optionally, the information indicating the location of the reference signal is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[0095] [0095] With reference to the tenth aspect, in some implementations of the tenth aspect, the method also includes: sending, through the network device, indication information of a size of pilot region, where the indication information indicates occupied transmission bandwidth pilot region.
[0096] [0096] Optionally, the information indicating the size of the pilot region is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[0097] [0097] It should be understood that the aforementioned upper layer signaling to carry various types of indication information is merely an example of description, but should not constitute any limitation for this request.
[0098] [0098] With reference to the tenth aspect, in some implementations of the tenth aspect, the indication information of the reference signal location is a bitmap, the bitmap includes at least one indication bit, each indication bit is used to indicate whether a group of RBs is used to transmit the CSI-RS, and the group of RBs includes at least one RB.
[0099] [0099] With reference to the tenth aspect, in some implementations of the tenth aspect, the method also includes: determining, by the network device based on the displacement of the pilot region, the initial RB for transmission of the CSI-RS.
[00100] [00100] According to an eleventh aspect, a reference signal receiving method is provided and includes: sending, through a terminal device, a CSI-RS channel status information reference signal based on an initial location domain frequency of a resource to transmit the CSI-RS, where the initial location of frequency domain of the resource to transmit the CSI-RS is determined by a displacement of a pilot region, the displacement of the pilot region indicates a displacement of the resource between an initial RB resource block from the pilot region and an initial RB from a BWP bandwidth portion of the terminal device, or the pilot region offset indicates a resource offset between an initial pilot region RB and an initial width RB system bandwidth, and the pilot region is a feature that is configured for the terminal device to transmit the CSI-RS.
[00101] [00101] Based on the previous technical solution, in this modality of this request, an initial RB to receive the CSI-RS by the terminal device is determined based on the BWP of the terminal device in NR, and the CSI-RS is transmitted based on the RB initial, so that the terminal device can receive the CSI-RS from a network device based on the location and size of the BWP of the terminal device. Thus, this order is more suitable for an NR scenario.
[00102] [00102] With reference to the eleventh aspect, in some implementations of the eleventh aspect, the method also includes: receiving, by the terminal device, indication information of a first displacement k ,, where the indication information of the first displacement k, indicates a value of k., & the first offset k, indicates an amount of
[00103] [00103] Optionally, the information of the indication of the first displacement is carried in upper layer signaling. The upper layer signaling includes, for example, an RRC message or a MAC-CE.
[00104] [00104] With reference to the eleventh aspect, in some implementations of the eleventh aspect, the method also includes: receiving, by the terminal device, information indicating a second displacement T, where the information indicating the second displacement T, indicates a Ti value; and receiving, by the terminal device, indication information of a third displacement k, where the indication information of the third displacement k, indicates a value of k, where the second displacement T, indicates a number of RBs among an initial RB of a location mappable in the pilot region and the initial RB of the BWP, and the third k offset, is used to indicate an amount of RBs between an initial RB of a mapping location in the pilot region and the initial RB of the mapped location in the pilot region.
[00105] [00105] Optionally, the information of indication of the second displacement T, and the information of indication of the third displacement k, are carried in signaling of upper layer. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[00106] [00106] It should be understood that the upper layer signaling to carry the second offset indication information 7, and the upper layer signaling to carry the third offset indication information k may be the same upper layer signaling part or they can be different top layer signage. This is not limited in this order.
[00107] [00107] In the two previous implementations of indicating the displacement of the pilot region, the displacement of the pilot region can be represented by a displacement relative to the initial BWP RB.
[00108] [00108] With reference to the eleventh aspect, in some implementations of the eleventh aspect, the method also includes: receiving, by the terminal device, information indicating the initial location of the pilot region, where the information indicating the initial location indicates a RB number corresponding to an initial RB to transmit the reference signal in the system bandwidth.
[00109] [00109] Optionally, the information indicating the initial location of the pilot region is carried in upper layer signaling. The upper layer signaling includes, for example, an RRC message or a MAC-CE.
[00110] [00110] With reference to the eleventh aspect, in some implementations of the eleventh aspect, the method also includes: receiving, by the terminal device, information indicating a reference signal location, where the information indicating the location of a signal signal reference indicates an RB to transmit the CSI-RS in the pilot region.
[00111] [00111] Optionally, the information indicating the location of the reference signal is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[00112] [00112] With reference to the eleventh aspect, in some implementations of the eleventh aspect, the indication information of the reference signal location is a bitmap, the bitmap includes at least one indication bit, each indication bit is used to indicate whether a group of RBs is used to transmit the CSI-RS, and each group of RBs includes at least one RB.
[00113] [00113] Optionally, the information indicating the size of the pilot region is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[00114] [00114] It should be understood that the upper layer signaling for the transportation of various types of indication information is only an example for the description, but should not constitute any limitation in this request.
[00115] [00115] According to an twelfth aspect, a terminal device is provided and includes a determination module and a transceiver module, in order to carry out the method in the eighth aspect or any possible implementation of the eighth aspect or in the eleventh aspect or any another possible implementation of the eleventh aspect. The determination module is configured to perform a function related to determination, and the transceiver module is configured to perform a function related to reception and sending.
[00116] [00116] According to a thirteenth aspect, a network device is provided and includes a determination module and a transceiver module, in order to carry out the method in the ninth aspect or in any possible implementation of the ninth aspect or in the thirteenth aspect or in any other possible implementation of the tenth aspect. The determination module is configured to perform a function related to determination, and the transceiver module is configured to perform a function related to reception and sending.
[00117] [00117] According to a fourteenth aspect, a terminal device is provided, and includes a processor, a memory and a transceiver. The memory is configured to store a computer program, and the processor is configured to call the computer program from memory and run the computer program, to control the transceiver to receive and send a signal, so that the terminal device performs the method in the eighth aspect or any possible implementation of the eighth aspect or in the eleventh aspect or any possible implementation of the eleventh aspect.
[00118] [00118] According to a fifteenth aspect, a network device is provided and includes a processor, a memory and a transceiver. The memory is configured to store a computer program, and the processor is configured to call the computer program from memory and run the computer program, to control the transceiver to receive and send a signal, so that the network device perform the method on the ninth aspect or any possible implementation of the ninth aspect or on the tenth aspect or any possible implementation of the tenth aspect.
[00119] [00119] Optionally, there are one or more processors and there are one or more memories.
[00120] [00120] Optionally, the memory can be integrated with the processor or the memory and the processor are disposed separately.
[00121] [00121] In accordance with a sixteenth aspect, a system is provided, and the system includes the anterior terminal device and the anterior network device. According to a fifteenth aspect, a computer program product is provided. The computer program product includes a computer program (also known as code or instruction). When the computer program is executed, a computer performs the methods in the previous aspects.
[00122] [00122] According to a seventeenth aspect, a computer-readable medium is provided. The computer-readable medium stores a computer program (also known as code or instruction). When the program is run on a computer, the computer performs the methods in the previous aspects.
[00123] [00123] In accordance with an eighteenth aspect, a computer program product is provided. The computer program product includes computer program code. When the program code is executed on a computer, the computer performs the methods in the previous aspects.
[00124] [00124] According to a nineteenth aspect, a chip system is provided, and the chip system includes a processor, configured to support a terminal device in the implementation of a function in the previous aspects, for example, generating, receiving , send, or transform data and / or information in the previous methods. In a possible design, the chip system also includes a memory, and the memory is configured to store a program instruction and data that are needed by the terminal device. The chip system can include a chip, or it can include a chip and another discrete device.
[00125] [00125] According to a twentieth aspect, a chip system is provided, and the chip system includes a processor, configured to support a network device in implementing a function in the previous aspects, for example, generating, receiving , send, or transform data and / or information in the previous methods. In a possible design, the chip system also includes a memory, and the memory is configured to store a program instruction and data needed by the network device. The chip system can include a chip, or it can include a chip and another discrete device. BRIEF DESCRIPTION OF THE DRAWINGS
[00126] [00126] Figure 1 is a schematic diagram of a communications system to which a method of sending and receiving a reference signal is applicable in a modality of this request; Figure 2 is a schematic flow chart of a method of sending and receiving a reference signal according to one embodiment of this request; Figure 3 is a schematic diagram of combination locations configured in different mapping modes; Figure 4 is a schematic diagram of the survey regions configured in different resource configuration modes;
[00127] [00127] The following are technical solutions in this application with reference to the attached drawings.
[00128] [00128] It should be understood that the technical solutions in this application can be applied to various communications systems, such as a global system for mobile communications (Global System for Mobile communications, GSM), a multiple access by code division (Code Division Multiple Access , CDMA), a broadband code division multiple access system (Wideband Code Division Multiple Access, WCDMA), a general packet radio service (General Packet Radio Service, GPRS), a long-term evolution system ( LTE), an advanced long-term evolution system (LTE-A), a LTE frequency division duplexing system (Frequency Division Duplex, FDD), a LTE time division duplexing system (Time Division Duplex, TDD), a universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS), a worldwide interoperability communications system for microwave access (Worldwide Interoperability for Microwave Access, WiMAX), a state-of-the-art communications system (for example, a fifth generation (fifth generation, 5G), a converged system of a plurality of access systems or a developed system. The 5G system can also be referred to as a new radio access technology (NR) system.
[00129] [00129] To facilitate understanding of the modalities of this application, a communications system to which the modalities of this application are applicable is first described in detail with reference to Figure 1. Figure 1 is a schematic diagram of a communications system 100 to which a method of sending and receiving a reference signal in a modality of this order is applicable. As shown in Figure 1, the communication system 100 can include a network device 102 and terminal devices 104 to 114.
[00130] [00130] It must be understood that the network device
[00131] [00131] The network device 102 can communicate with a plurality of terminal devices (for example, the terminal devices 104 to 114 shown in the figure).
[00132] [00132] It should be understood that the terminal device can also be referred to as user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile console, a station remote, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communications device, a user agent, or a user device. The terminal device in the modalities of this application can be a mobile phone (mobile phone), a tablet computer (tablet computer), a computer with a wireless reception / sending function, a virtual reality terminal device (Virtual Reality, VR), an augmented reality terminal device (Augmented Reality, AR), a wireless terminal in industrial control (industrial control), a wireless terminal in auto
[00133] [00133] In addition, communication system 100 may alternatively be a public land mobile network (PLMN), a device-to-device network, device-to-device, D2D, a machine-to-machine network (machine-to-machine, M2M), or another network. Figure 1 is just a simplified schematic diagram of an example to facilitate understanding. The communications system 100 can also include another network device and another terminal device that are not shown in Figure 1
[00134] [00134] In order to facilitate the understanding of the modalities of this request, below, we briefly describe an SRS with reference to the communications system shown in Figure 1.
[00135] [00135] The SRS is used to perform quality probing on an uplink channel. The terminal device sends the SRS on the uplink channel, and the network device measures the uplink channel based on the received SRS, to determine a frequency location of a resource block allocated by the terminal device for uplink scheduling.
[00136] [00136] In LTE, the uplink system bandwidth can be divided into two parts, where the regions on both sides of the uplink system bandwidth are used to send a PUCCH, where the channel measurement uplink does not need to be done by sending the SRS, and a region in the middle of the uplink system bandwidth, that is, a region that is not a resource to send the PUCCH, is used to send a PUSCH, where the SRS it must be sent to perform the uplink channel measurement, so that the network device performs resource scheduling.
[00137] [00137] Table 1 shows the SRS bandwidth configuration parameters in LTE.
[00138] [00138] It can be learned from Table 1 that, in a configuration of the same C;., The drilling regions corresponding to different B ,, are the same. For example, when C ;, it is O or 1, a corresponding polling region is 96 RBs; when C & ,, is 2, a corresponding polling region is 80 RBs. For the sake of brevity, the examples are not further listed here.
[00139] [00139] Regardless of a bandwidth configuration, a location of an initial subcarrier to transmit an SRS in n, -th subband can be determined according to the following formula: KO RO 43 KM, n
[00140] [00140] k "indicates the initial subcarrier to transmit the SRS in the nth sub-band (an initial subcarrier or the first subcarrier to transmit the SRS in a direction from low frequency to high frequency). Here, the subband can be understood as a frequency domain resource to transmit the SRS using a slot transmission opportunity in a polling region. n, can be understood as an index of the subband for transmission of the SRS, and a value of n, can be determined based on an upper layer parameter nr. A method for calculating n, can be the same as in the prior art. For the sake of brevity, the details are not described here. In LTE, K ”indicates an amount of RBs between an initial probe region location (for example, an initial probe region subcarrier) and a low frequency uplink system bandwidth location (for example, an uplink system bandwidth initial subcarrier), that is, a number of RBs between an initial subcarrier that can be used to transmit the SRS in the uplink system bandwidth and the initial uplink bandwidth subcarrier uplink system, B. ,, is a UE-specific SRS bandwidth configuration parameter, n, is an SRS index at a frequency domain location, M $, is a length of the SRS, that is, a number of resource elements (resource element, RE) occupied by an SRS,
[00141] [00141] For a common uplink subframe, Ko = (| NE / 2 | = more / DNE 4h
[00142] [00142] For uplink pilot slot, UpPTS pilot ki ”= (Nlk —mss,) NZ + ki or ki ”= ki0)
[00143] [00143] Nit indicates a number of blocks of RBs resources included in the uplink system bandwidth, LH] indicates rounding down, Mg. indicates a number of RBs included in the polling region and can be obtained by referring to Table 1, ms, is a maximum value of m, .., corresponding to different Cây., kP is used to determine a combined mapping location, k EO01L ..., K. 1), and Kr, indicates a number of combinations.
[00144] [00144] It should be understood that for a specific determination process, according to the previous formula, the location of the initial subcarrier to transmit the SRS, refer to the state of the art. To avoid repetition, detailed descriptions of the specific process are omitted here.
[00145] [00145] It can be learned from the previous description that in LTE, a location of a resource to transmit the SRS is related to the uplink system bandwidth. In addition, for different types of subframes, the location of a resource configured to transmit the SRS varies, or an offset between the initial subcarrier to transmit the SRS and the initial subcarrier of the uplink system bandwidth varies. However, the resources configured to transmit an SRS are the same in subframes of the same type. UpPTS usually appears in a special subframe used for uplink and downlink switching in a TDD system, and this is a relatively special case. If an SRS resource configuration mode is considered in a normal uplink subframe in an FDD system and the TDD system, it can be learned from the previous formula that the location of the initial subcarrier for SRS transmission is related to the region of poll configured for SRS. In LTE, the probing regions of the terminal devices in the same cell are the same. Therefore, the resources for the SRS transmission are also in the same location and the polling region is always in the middle of the uplink system bandwidth.
[00146] [00146] In this SRS resource configuration mode, the resource to transmit the SRS is configured only in the middle of the uplink system bandwidth, and this mode is not flexible enough. For example, if a PUCCH location changes, channel measurement cannot be performed on resources on both sides of the uplink system bandwidth.
[00147] [00147] In view of this, this request provides a method of sending and receiving a reference signal, to be more applicable to the resource configuration for an SRS in NR.
[00148] [00148] Before the modalities of this request are described, several concepts related in NR are first described briefly.
[00149] [00149] Part of bandwidth (BWP): In NR,
[00150] [00150] Interval (slot): because frame structures in different BWPs can be different, the intervals are also defined differently. In NR, an interval is a minimum scaling unit. A range format includes 14 multiplexing symbols for orthogonal frequency division multiplexing (OFDM), and a CP of each OFDM symbol is a normal CP; a range format includes 12 OFDM symbols, and a CP of each OFDM symbol is an extended CP; a range format includes seven OFDM symbols, and a CP of each OFDM symbol is one
[00151] [00151] The modalities of this application are described in detail below with reference to the attached drawings.
[00152] [00152] It should be understood that the technical solutions in this application can be applied to a wireless communications system, for example, the communications system 100 shown in Figure 1. The communications system can include at least one network device and at least at least one terminal device, and the network device and the terminal device can communicate over a wireless air interface. For example, the network device in the communications system can correspond to the network device 102 shown in Figure 1, and the terminal device can correspond to the terminal devices 104 to 114 shown in Figure 1.
[00153] [00153] Generally, the following uses a process of interaction between a terminal device and a network device as an example to describe the modalities of this request in detail. The terminal device can be any terminal device that is in the wireless communications system and that has a wireless connection to the network device. It can be understood that the network device and a plurality of terminal devices that are in the wireless communications system and that have a wireless connection relationship can transmit a reference signal based on the same technical solution. This is not limited in this order.
[00154] [00154] Figure 2 is a schematic flowchart of a method of sending and receiving reference signal 200 according to one embodiment of this request from a device interaction perspective. As shown in Figure 2, method 200 can include steps 210 through 270.
[00155] [00155] In step 210, a terminal device determines, based on an offset, a location of an initial subcarrier to transmit an SRS. Here, it should be noted that the offset can be understood as a resource offset between an initial subcarrier of a polling region and an initial subcarrier of the transmission bandwidth of a BWP from the terminal device, in other words, the displacement is related a location of the BWP transmission bandwidth of the terminal device. In this modality of this request, the displacement can be represented by a number of resource blocks (resource block, RB).
[00156] [00156] It should be noted that the polling region is a region in which the terminal device conducts channel polling using the SRS. The polling region can be understood as a resource region in which a network device needs to perform channel measurement, or a resource region that can be used by the terminal device to send the SRS. In this embodiment of this request, the polling region is specific to UE, and the bandwidth sizes of the polling regions corresponding to different terminal devices in the same cell may be different.
[00157] [00157] It can be learned from the previous description that the initial subcarrier for transmission of the SRS is kRO RO SK ME An, For a specific process of determination, based on the displacement Kk (", of the initial subcarrier k" for transmission of the SRS , refer to the state of the art. This is not limited in this order. The k (”offset can be determined based on a predefined resource configuration mode. A specific process for determining the offset based on the predefined resource configuration mode is described in detail below with reference to a specific modality.
[00158] [00158] Likewise, in step 220, the network device determines, based on the displacement, the location of the initial subcarrier to transmit the SRS.
[00159] [00159] It should be understood that a specific method for determining, by the network device based on the predefined resource configuration mode, the location of the initial subcarrier for transmitting the SRS in step 220 is the same as a specific method for determining, at least terminal device based on the predefined resource configuration mode, the location of the initial subcarrier for transmitting the SRS in step 210. For the sake of brevity, the details are not described here again.
[00160] [00160] In step 230, the terminal device sends the SRS based on the location that is of the initial subcarrier to transmit the SRS and which is determined in step 210.
[00161] [00161] Correspondingly, in step 230, the network device receives the SRS from the terminal device based on the location which is of the initial subcarrier to transmit the SRS and which is determined in step
[00162] [00162] It should be understood that a specific process of step 230 can be the same as in the state of the art. For the sake of brevity, detailed descriptions of the specific process are omitted here.
[00163] [00163] Therefore, in this modality of this request, the location of the initial subcarrier to transmit the SRS by the terminal device is determined based on the BWP of the terminal device in NR, and the SRS is transmitted based on the location of the initial subcarrier, so that a resource that is configured for each terminal device to transmit an SRS is specific to UE, and the resource to transmit the SRS can be configured based on the transmission or reception capacity of each terminal device and a requirement for measured bandwidth. Thus, this order is more suitable for an NR scenario. In addition, an interval type is not limited in the method for determining the location of the initial subcarrier for transmitting the SRS provided in this embodiment of this request.
[00164] [00164] In a possible design, a BWP transmission bandwidth size allocated to the terminal device can be 106 RBs. In the following embodiments, the BWP's transmission bandwidth size is 106 RBs is used as an example for detailed descriptions. However, it should be understood that this should not be a limitation on that request. A system can allocate different bandwidth BWPs to different end devices based on factors such as transmission capabilities and reception capabilities of the end devices and service requirements of the end devices.
[00165] [00165] The bandwidth of an SRS polling region is specified as a multiple of 4 RBs in a current standard. Therefore, if the BWP is 106 RBs, the polling region of the SRS will need to be redefined.
[00166] [00166] Considering that a PUCCH is not necessarily configured on both sides of the BWP bandwidth in NR, the network device can scale any resource in the BWP. Therefore, the network device expects to perform channel measurement on any resource in the uplink system bandwidth. In other words, the network device expects that the region in which the terminal device conducts channel polling using the SRS can be close to a system resource escalation region, or, the network device expects to allocate the highest bandwidth. possible to the terminal device for SRS transmission.
[00167] [00167] In a possible project, a larger probing region of an SRS is defined as a maximum multiple of 4 RBs with a BWP bandwidth range, to be specific, 104 RBs. Considering that the loss of path of sending an SRS by terminal devices in different regions of a cell to the network device can be different, for example, a loss of path of a terminal device in a central region of the cell is less than the loss of travel from a terminal device in a region of the cell's edge, different power can be allocated to terminal devices in different regions. For example, for the terminal device in the central region of the cell, the power allocated to each RB is less and, therefore, the bandwidth to send an SRS each time may be greater; for the terminal device in the cell's edge region, the power allocated to each RB is higher and, therefore, the bandwidth for sending an SRS can be less and less. In this way, the power density can be higher, the power consumption caused by a loss of travel can be compensated and the quality of the channel measurement can be improved, thereby improving the measurement accuracy.
[00168] [00168] Table 2 shows different SRS bandwidth configuration parameters corresponding to the same C.;, In the same cell in NR.
[00169] [00169] In other words, the SRS bandwidth settings in the same cell can be classified into a plurality of configuration levels, and the plurality of configuration levels corresponds separately to the terminal devices in different regions of the cell. For example, the bandwidth for transmitting an SRS each time by a terminal device in a central region of the cell can be set to 104
[00170] [00170] Therefore, in Table 2, C. ,, is an EU specific SRS configuration parameter, and can be configured for terminal devices with the same transmission or reception capacity, or the corresponding BWP bandwidth. CV, is the same. In addition, to allow a channel polling region of the terminal device to be as close as possible to a system resource scheduling region, the polling regions corresponding to different B., in the case of the same C ;, can be configured to be the same or different.
[00171] [00171] Furthermore, because the bandwidth of the BWP is not an integer multiple of 4 RBs, but a polling region of an SRS needs to be an integer multiple of 4 RBs, regardless of the configuration mode, a terminal device cannot transmit an SRS on the entire uplink system bandwidth through a single SRS transmission time.
[00172] [00172] In another possible scenario, in some systems with "channel reciprocity", such as a WiMAX system or an LTE-TDD system, and a possible future system with "channel reciprocity", the network device can estimate CSI of a downlink channel using CSI of an uplink channel obtained through uplink channel measurement. Therefore, the network device expects to perform channel measurement on any resource in the BWP bandwidth.
[00173] [00173] Here, it should be noted that in a system with "channel reciprocity", an uplink channel and a downlink channel occupy the same frequency band. Therefore, it can be considered that the uplink channel and the downlink channel are similar, that is, reciprocal. Based on this feature, the end device can measure the uplink channel by sending a reference signal as an SRS, and the network device can measure the uplink channel using the reference signal to obtain the uplink channel CSI . In addition, due to "channel reciprocity", the network device can estimate the downlink channel CSI using the uplink channel CSI.
[00174] [00174] Therefore, the network device expects to allocate as much bandwidth as possible to an SRS for SRS transmission, or the network device expects to perform channel measurement on as many resources as possible.
[00175] [00175] Based on the previous problem, a plurality of resource configuration modes is predefined in this application, and the plurality of resource configuration modes can correspond to a plurality of different offsets.
[00176] [00176] Optionally, method 200 also includes step 240: The terminal device determines the displacement based on the predefined resource configuration mode. The resource configuration mode can be determined from the plurality of predefined resource configuration modes, and the plurality of predefined resource configuration modes corresponds to the plurality of different offsets.
[00177] [00177] Correspondingly, method 200 also includes step 250: The network device determines the displacement based on the predefined resource configuration mode. The resource configuration mode can be determined from the plurality of predefined resource configuration modes, and the plurality of predefined resource configuration modes corresponds to the plurality of different offsets.
[00178] [00178] Therefore, the network device and the terminal device can separately determine the resource configuration mode for the terminal device, to be specific, to determine, for the terminal device, the location of the initial subcarrier to transmit the SRS, in in other words, to configure a resource to transmit the SRS.
[00179] [00179] For the same terminal device, different offsets can be configured for the terminal device in different modes of resource configuration at different times. For different terminal devices, different offsets can be configured for different terminal devices in different resource configuration modes at the same time.
[00180] [00180] It can be understood that a communications system generally includes a plurality of terminal devices that communicate with the same wireless network device. If resource configuration is performed on some terminal devices in a resource configuration mode (for example, indicated as a resource configuration mode 1), and resource configuration is performed on some other terminal devices in another configuration mode resource (for example, indicated as a configuration mode 2 resource), the plurality of terminal devices in the cell can send an SRS in the total bandwidth of a BWP at the same time.
[00181] [00181] In a possible project, without considering k , The plurality of displacements includes zero and a difference in bandwidth between the survey region and the BWP.
[00182] [00182] In particular, should it be noted that resource mapping can be performed on an SRS based on different ki values of a parameter to determine a combined mapping location. In other words, the combined mapping location can be understood as a subcarrier location that is a frequency domain resource and to which the SRS is mapped. For example, when K ,. is 2, that is, Comb2, an SRS from a terminal device can be mapped to an odd-numbered subcarrier, and an SRS from another terminal device is mapped to an even-numbered subcarrier, for example, as shown in Figure 3. A Figure 3 is a schematic diagram of the locations of combinations configured in different mapping modes. As shown in Figure 3, the SRSs of two terminal devices are mapped to different subcarriers in the same drilling region. For example, if a terminal device configures a resource in mapping mode 1, an SRS is mapped to an odd-numbered subcarrier; if a terminal device configures a resource in mapping mode 2, an SRS is mapped to an even numbered subcarrier.
[00183] [00183] It should be understood that the previous Comb2 is just an example of description, but it should not constitute any limitation for this request. For example, when Kr. Is 4, that is, Comb4, an SRS of a terminal device can be mapped to the (n + 4m) -th subcarrier, where n can be any value in O, 1, 2, and 3, em is a positive integer. The k / º parameter to determine the combined mapping location and the K ,, number of combinations are not limited in this order.
[00184] [00184] If frequency domain resources mapped by terminal devices with the same probing region are placed together, schematic diagrams of the probing regions shown in Figure 4 and Figure 5 can be obtained. Therefore, the offset in this application is a offset obtained without considering ki ". For the sake of brevity, the description of an equal or similar case is omitted below.
[00185] [00185] It should be understood that the drilling regions shown in Figure 4 and Figure 5 are merely examples for description. However, this does not indicate that each terminal device sends an SRS on consecutive resources in the frequency domain, but SRSs are discretely distributed across frequency domain resources based on the combined mapping locations. In addition, for ease of understanding, an entire polling region is shown in Figure 4 and Figure 5. In fact, not all end devices can complete SRS transmission across the polling region at a time of SRS transmission. In some cases, transmission in the polling region can be transmitted only using transmission opportunities at a plurality of intervals. For example, when a measurement region is 48 RBs, a terminal device can complete the SRS transmission in the polling region through two SRS transmission moments (or SRS transmission opportunities at two intervals).
[00186] [00186] Figure 4 is a schematic diagram of the drilling regions configured in different modes of resource configuration. As shown in Figure 4, when resource 1 configuration mode is used for configuration, the initial subcarrier of the polling region can be the initial subcarrier of the BWP, that is, when ki it is not considered, the displacement is zero; when resource configuration mode 2 is used for configuration, the last subcarrier of the polling region may be the last subcarrier of the BWP, that is, when ki "is not considered, the offset is the difference in bandwidth between the polling region and BWP.
[00187] [00187] Optionally, the plurality of resource configuration modes - predefined is in a one-to-one correspondence with a plurality of formulas. The formulas can reflect a shift between the initial subcarrier of the polling region and the initial subcarrier of the BWP transmission bandwidth, or the formulas can be used to determine the initial subcarrier for the SRS transmission.
[00188] [00188] Specifically, the plurality of formulas can include: Formula 1: KR = (NH Mss5 [114, INFO; and Formula 2: k = k .
[00189] [00189] ki ”indicates the offset, Ni indicates a number of blocks of RBs resources included in the BWP transmission bandwidth of the terminal device, | indicates rounding down, m .., indicates a number of RBs used by the terminal device to transmit an SRS once, B. ,, is an EU user equipment specific SRS bandwidth configuration parameter,
[00190] [00190] It should be noted that the subcarriers to which the SRSs of all terminal devices are mapped in the frequency domain can be discretely distributed, and are distributed in a comb-like pattern. ki ”can be used to determine the combined mapping location or an SRS mapping location. For example, an SRS is mapped to an odd-numbered subcarrier or an SRS is mapped to an even-numbered subcarrier. For a specific method for determining the location of combined ki-based mapping, consult the state of the art. This is not limited in this order.
[00191] [00191] Can it be learned that if k / not considered, the offset corresponding to Formula 1 is the difference in bandwidth between the polling region and the BWP, and the offset corresponding to Formula 2 is zero.
[00192] [00192] Optionally, method 200 also includes step 260: The terminal device obtains an index value from the default resource configuration mode, where the index value is used to indicate the default resource configuration mode.
[00193] [00193] The plurality of predefined resource configuration modes is in a one-to-one correspondence with a plurality of Index values, and the terminal device and the network device can pre-store the one-to-one correspondence one. After the terminal device and the network device determine the index value of the resource configuration mode separately, a resource to transmit the SRS can be configured based on the corresponding resource configuration mode.
[00194] [00194] In step 260, the terminal device can obtain the index value of the predefined resource configuration mode in at least the following two ways:
[00195] [00195] Method 1: Step 2601: The terminal device receives the first information, where the first information includes the index value of the predefined resource configuration mode.
[00196] [00196] Method 2: Step 2602: The terminal device determines the index value of the predefined resource configuration mode based on any of a combined system frame number, interval number or mapping location.
[00197] [00197] Next, a specific process is described separately in which the terminal device obtains the index value of the resource configuration mode with reference to the two previous implementations.
[00198] [00198] It should be noted that, in NR, the terminal device can transmit an SRS in a plurality of consecutive OFDM symbols in an interval. In the various possible implementations below to determine a resource configuration method, in the same resource configuration mode, the ko offsets of performing SRS transmission by the same terminal device on a plurality of OFDM symbols in an interval are the same.
[00199] [00199] In method 1, the Index number of the predefined resource configuration mode can be determined by the network device, and then sent to the terminal device using the first information. This method can be considered as a method to explicitly indicate a resource configuration mode.
[00200] [00200] Optionally, method 200 also includes step 270: The network device determines the index value of the predefined resource configuration mode based on any of the system frame number, interval number or combined mapping location .
[00201] [00201] Corresponding to step 2601, the network device sends the first information, where the first information includes the index value of the predefined resource configuration mode.
[00202] [00202] Optionally, the first information is carried in any one of a radio resource control message (radio resource control, RRC), a control element (control element, CE) of medium access control , MAC), downlink control information, DCI, system message or broadcast message.
[00203] [00203] Optionally, the first information can be indicated alternatively using a combination of the previous signaling. For example, the network device may indicate a candidate set of resource configuration modes for the terminal device using a message
[00204] [00204] The previous Formula 1 and Formula 2 are examples and, respectively, correspond to an index value K = 0 and an index value K = 1.
[00205] [00205] The formula 1 KkP = (NH Mssa [| 1N, INS + k2 corresponds to K = 060; and
[00206] [00206] Formula 2 Kk ”= k ! " ”corresponds to K = 1.
[00207] [00207] Two resource configuration modes corresponding to K = 0 and K = 1 can be shown in the example in Figure 4.
[00208] [00208] Therefore, the network device only needs to indicate a value of K in the first information, so that the terminal device can determine which of the previous formulas is used to determine the location of the initial subcarrier to transmit the SRS.
[00209] [00209] In method 2, the Index number of the predefined resource configuration mode can be determined separately by the network device and the terminal device based on the previous parameters. This method can be considered as a method for implicitly indicating a resource configuration mode.
[00210] [00210] Optionally, method 200 also includes step 270: The network device determines the index value of the predefined resource configuration mode based on any of the system frame number, interval number or combined mapping location .
[00211] [00211] The following describes in detail how to determine the index value of the predefined resource configuration mode based on the system frame number, the interval number and the combined mapping location.
[00212] [00212] 1. The Index value of the default resource configuration mode is determined based on the combined mapping location.
[00213] [00213] Specifically, the combined mapping location is determined based on k ( ", Where k" Eo1 or ki E0,1,2,3).
[00214] [00214] For example, when k "is an even number, K = O, and ki is determined according to Formula 1, and when ki "is an odd number, K = 1, ek” is determined according to Formula 2. Alternatively, when k ”is an even number, K = 1, ek” is determined according to Formula 2, and when kºº is an odd number, K = 0, and k ”is determined according to Formula 1.
[00215] [00215] It should be understood that the previous values of ki "Are merely examples of description, but should not constitute any limitation to this order. A value of k (is not limited in this order.
[00216] [00216] 2. The index value of the predefined resource configuration mode is determined based on the system frame number nr.
[00217] [00217] For example, when n «is an even number, K = O, and ki is determined according to Formula 1, and when ns; is an odd number, K = 1, and k ”is determined according to Formula 2. Alternatively, when n« is an even number, K = 1, and kk ”is determined according to Formula 2, and when n« is an odd number, K = 0, and k / ”is determined according to Formula 1.
[00218] [00218] 3. The index value of the predefined resource configuration mode is determined based on the interval number ns.
[00219] [00219] For example, when we; is an even number, K = 0, and k ”is determined according to Formula 1, and when ns is an odd number, K = 1, and k” is determined according to Formula 2. Alternatively, when n; is an even number, K = 1, and kk ”is determined according to Formula 2, and when ns is an odd number, K = 0, and k /” is determined according to Formula 1.
[00220] [00220] Therefore, based on the previous technical solution, the network device can receive, in every BWP a, the SRS sent by the terminal device, that is, it can perform channel measurement throughout the BWP, to perform resource scheduling.
[00221] [00221] Furthermore, in a system with "channel reciprocity", the network device can implement full bandwidth measurement in the BWP. This is more conducive to estimating the CSI of a downlink channel, thus facilitating resource scaling.
[00222] [00222] Based on the two previous resources, compared to the LTE SRS resource configuration mode, the method provided in this application helps the network device to scale more resources, thereby improving resource utilization.
[00223] [00223] In another possible project, if k "Is not considered, the plurality of offsets can include zero, a bandwidth difference between the SRS polling region and the BWP, and half the bandwidth difference between the SRS polling region and the BWP.
[00224] [00224] Optionally, the plurality of resource configuration modes - predefined is in a one-to-one correspondence with a plurality of formulas. Formulas can reflect a shift between the initial subcarrier to transmit the SRS and an initial subcarrier of the uplink system bandwidth, or the formulas can be used to determine the initial subcarrier for the transmission of the SRS.
[00225] [00225] Specifically, the plurality of formulas may include: Formula 1: ko ”= (No msesa [| 14N, INS + kiê; Formula 2: KP = kP; and Formula 3: Ki” = ([N & / 2 | mass [] 14N, / DNS HA
[00226] [00226] k "indicates the offset, NH indicates a number of blocks of RBs resources included in the BWP transmission bandwidth of the terminal device, | - | indicates rounding down, m .., indicates a number of RBs used by the terminal device to transmit an SRS once, B. ,, is an EU user equipment specific SRS bandwidth configuration parameter, each B. , indicates a set of parameters ms ..., and N ,, b = Bs; s, b is an integer, N, indicates the number of times required to send an SRS through the terminal device for measured bandwidth of m .. . ,, b 'is a value obtained when crossing [0, bl, Nº indicates a number of subcarriers included in each RB, ek is used to determine a combined mapping location.
[00227] [00227] Figure 5 is a schematic diagram of the polling regions configured in the previous three different resource configuration modes. As shown in Figure 5, when a resource configuration mode corresponding to Formula 1 is used for configuration, the initial subcarrier of the survey region can be the initial subcarrier of the BWP, that is, when k ( Is not considered, the displacement is 0; when a resource configuration mode corresponding to Formula 2 is used for configuration, the last subcarrier in the survey region can be the last subcarrier of the BWP, that is, when k ( is not considered, the offset is the difference bandwidth between the polling region and the BWP; when a resource configuration mode corresponding to Formula 3 is used for configuration, the polling region is in the middle of the BWP, and an offset between the polling region and each the two ends of the BWP is half the bandwidth difference between the polling region and the BWP.
[00228] [00228] The terminal device can also obtain the index value of the predefined resource configuration mode using method 1 and method 2 above.
[00229] [00229] Specifically, in Method 1, Formula 1, Formula 2 and Formula 3 above are used as an example and correspond respectively to an index value K = O, an index value K = 1 and an index value K = 2 .
[00230] [00230] Formula 1. KM = (NKmes [], 4N) NE +02 corresponds to K = 60; Formula 2 Kk ”= k ! corresponds to K = 1; and Formula 3 ko = | NG 12 | ms [], N, / DNS Ho corresponds to K = 2,
[00231] [00231] Three resource configuration modes corresponding to K = 0, K = 1, and K = 2, can be shown in the example in Figure 5.
[00232] [00232] Therefore, the network device needs to indicate only a value of K in the first information, so that the terminal device can determine which of the previous formulas is used to determine the location of the initial subcarrier to transmit the SRS.
[00233] [00233] In method 2, the Index number of the predefined resource configuration mode can be determined by the network device and the terminal device based on the system frame number or the interval number.
[00234] [00234] The following describes in detail how to determine the index value of the predefined resource configuration mode based on the system frame number or the interval number.
[00235] [00235] 1. The Index value of the predefined resource configuration mode is determined based on the system frame number nr.
[00236] [00236] For example, the index value K = mod (ns, 3) can be defined, where mod () indicates a module operation. When mod (ns, 3) = O, K = 0, and k ”is determined according to Formula 1; when mod (n ;, 3) = 1, K = 1, and ki ”is determined according to Formula 2; when mod (ns, 3) = 2, K = 2, and k ”is determined according to the Formula
[00237] [00237] 2. The index value of the predefined resource configuration mode is determined based on the interval number ns.
[00238] [00238] For example, the index value K = mod (ns, 3) can be defined. When mod (n; 3) = O, K = 0, and kP is determined according to Formula 1; when mod (ns, 3) = 1, K = 1, and kk ”is determined according to Formula 2; when mod (ns, 3) = 2, K = 2, and k ”is determined according to Formula 3.
[00239] [00239] Therefore, based on the above technical solution, the network device can receive, in every BWP, the SRS sent by the terminal device, that is, it can perform channel measurement in all BWP, to perform resource scheduling. In addition, a possibility to place a PUCCH on both sides of the BWP is additionally considered in this project, and an SRS feature can be configured according to Formula 3, so that the polling region is in the middle of the BWP, thus improving resource usage.
[00240] [00240] In yet another possible project, to reduce the modification to an existing LTE protocol, this request does not exclude the possibility that a bandwidth size of a polling region defined in LTE is still used. That is, it is possible to refer to the bandwidth sizes of the polling regions that do not correspond to different C., In Table 1. For example, the polling regions can be 96 RBs, 80 RBs, 72 RBs, 64 RBs , 60 RBs and 48 RBs. The drilling regions corresponding to different Bsas in the case of the same C .., can be the same. Therefore, this order “still provides formulas that are in one-to-one correspondence with the plurality of resource configuration modes.
[00241] [00241] Optionally, the plurality of formulas can include: Formula 2: kKP = kP; and Formula 4: KI ”= (Ni; —but, NS + kio.
[00242] [00242] ki "indicates the offset, Ni indicates a number of blocks of RB resources included in the BWP transmission bandwidth of the terminal device, | indicates rounding down, mssã, indicates a maximum value of Msu50n Mses5 (o indicates a number of RBs included in the sondagenn region No. indicates a number of subcarriers included in each RB, and k / ”is used to determine a combined mapping location.
[00243] [00243] Therefore, if ki ) Is not considered, the offset corresponding to Formula 2 is zero, and the offset corresponding to Formula 4 is the difference in bandwidth between the polling region and the BWP.
[00244] [00244] In this project, the terminal device can still obtain, using Methods 1 and 2 above, the Index value used to indicate the predefined resource configuration mode, and the network device can also determine the index value of the mode predefined resource configuration using the previous method based on at least one of the system frame number, interval number, or combined mapping location.
[00245] [00245] Specifically, for example, the previous formulas can be in a one-to-one correspondence with a plurality of index values.
[00246] [00246] Formula 2 k ”= k ! corresponds to K = 0; and The Formula 4 Ki ”= (Ni; —ma &,) NS + ki corresponds to K = 1.
[00247] [00247] It should be understood that a specific process for determining the index value of the predefined resource configuration mode based on the system frame number, interval number or combined mapping location is similar to the specific process described above with reference to Formula 1, Formula 2 and Formula 3. For the sake of brevity, detailed descriptions of the specific process are omitted here.
[00248] [00248] Therefore, the bandwidth size of the LTE polling region is still used in the previous project, and the LTE protocol is modified relatively slightly. However, different offsets can be configured for different end devices using the previous formulas, so that the full bandwidth transmission of an SRS can be implemented in the BWP, and uplink channel measurement and resource scaling can be implemented. performed on BWP's total bandwidth resources. In addition, the network device can estimate CSI of a downlink channel using channel reciprocity, to perform resource scaling. Therefore, this design helps the network device to scale more resources, thus improving resource utilization.
[00249] [00249] Alternatively, optionally, the plurality of formulas includes: Formula 2: KM = ki ; Formula 4: KR = (Nif —ms8,) NZ + ki; and Formula 5: k (”= (| No / 2 | = msso / 2) NS +
[00250] [00250] ki ”indicates the offset, Ni indicates a number of blocks of RB resources included in the BWP transmission bandwidth of the terminal device, | indicates rounding down, m .., indicates a number of RBs included in the survey region, Nº indicates a number of subcarriers included in each RB, and k is used to determine a combined mapping location.
[00251] [00251] Therefore, if ki ) Is not considered, the offset “corresponding to Formula 2 is zero, oThe offset corresponding to Formula 4 is the difference in bandwidth between the polling region and the BWP, and the offset corresponding to Formula 5 is half the bandwidth difference between the survey region and the BWP.
[00252] [00252] In this project, the terminal device can still obtain, using Methods 1 and 2 above, the Index value used to indicate the predefined resource configuration mode, and the network device can also determine the index value of the mode predefined resource configuration using the previous method based on at least one of the system frame number, interval number, or combined mapping location.
[00253] [00253] Specifically, for example, the previous formulas can be in a one-to-one correspondence with a plurality of index values.
[00254] [00254] Formula 2 Kk ”= k " ”Corresponds to K = O; Formula 4 Ki” = (Ni; —mas, NS + ki corresponds to K = 1; and Formula 5 k ”= (| NX / 2 | = maso / 2) NS + ki "corresponds to K = 2.
[00255] [00255] It should be understood that a specific process for determining the index value of the predefined resource configuration mode based on the system frame number or interval number is similar to the specific process described above with reference to Formula 1, Formula 2 and Formula 3. For the sake of brevity, detailed descriptions of the specific process are omitted here.
[00256] [00256] Therefore, in the previous project, the bandwidth size of the LTE polling region is still used and the total bandwidth transmission of an SRS can be implemented in the BWP, to perform channel measurement and scaling on resources of total BWP bandwidth. In addition, it is considered a possibility that a PUCCH can be configured on both sides of the BWP in NR, thus reducing idle resources and improving resource utilization.
[00257] [00257] The foregoing lists several possible implementations for determining the index value of the predefined resource configuration mode based on the combined mapping location, system frame number and interval number. However, it should be understood that this should not be a limitation on that order, and that order does not exclude the possibility of determining the index value based on a different parameter from the previous enumeration.
[00258] [00258] It should be understood that the previous correspondence between each of the previous Formulas and an Index value is merely an example of description, but should not constitute any limitation in this request. For example, Formula 1 may correspond to a value of index K = 1, Formula 2 may correspond to a value of index K = 2, Formula 3 may correspond to a value of index K = 3, Formula 4 may correspond to to an index value K = 4 and Formula 5 can correspond to an index value K = 5. An index value value is not limited in this order.
[00259] [00259] In NR, a possibility to configure a PUCCH on both sides of the BWP is not excluded. Therefore, in this case, the network device expects to transmit an SRS in the middle of the BWP. In the BWP, if the polling region is shifted towards one of the two sides of the BWP, for example, a location where the polling region in Figure 4 or Figure 5 is located when K = O or 1, no SRS is transmitted on a portion of the bandwidth resources, and channel measurement or resource scaling cannot be performed. Consequently, that part of the resources can be idle and wasted. Therefore, this request also provides a method of sending and receiving a reference signal, to control the polling region that is in the middle of the BWP.
[00260] [00260] Figure 6 is a schematic flowchart of a method of sending and receiving a reference signal 300 according to another embodiment of this request from a device interaction perspective. As shown in Figure 6, method 300 can include steps 310 through 350.
[00261] [00261] In step 310, a terminal device determines, based on an offset, a location of an initial subcarrier to transmit an SRS.
[00262] [00262] In step 320, a network device determines, based on the displacement, the location of the initial subcarrier to transmit the SRS.
[00263] [00263] It should be understood that specific processes of step 310 and step 320 are similar to the specific processes of step 210 and step 220 in the method
[00264] [00264] It should be noted that in this modality of this request, the displacement can be determined based on a predefined resource configuration mode.
[00265] [00265] In this modality of this request, the displacement can be determined according to the following Formula: ki ”= (| NE / 2 | masa [|, N, / 2N8E +02.
[00266] [00266] It can be learned that the offset is half the difference in bandwidth between a polling region and a BWP. In other words, the survey region is in the middle of the BWP.
[00267] [00267] In yet another possible project, in order to reduce the modification in an existing LTE protocol, this request does not exclude the possibility that a bandwidth size of a polling region defined in LTE is still used. That is, it is possible to refer to the bandwidth sizes of the polling regions that do not correspond to Cs; different in Table 1. For example, polling regions can be 96 RBs, 80 RBs, 72 RBs, 64 RBs, 60 RBs and 48 RBs. The sounding regions corresponding to different B. ;, in the case of the same C .., can be the same. Therefore, this order also provides the following Formula to determine the displacement: ki ”= (| Nãs / 2 | Msps, o 1 2) NSÇ + Hkil)
[00268] [00268] It can be learned that the offset is still half the difference in bandwidth between the polling region and the BWP. In other words, the survey region is in the middle of the BWP.
[00269] [00269] Optionally, method 300 also includes step 330: The terminal device determines the displacement based on a predefined resource configuration mode.
[00270] [00270] Correspondingly, the method also includes step 340: The network device determines the displacement based on the predefined resource configuration mode.
[00271] [00271] It should be understood that specific processes of step 330 and step 340 are similar to the specific processes of step 240 and step 250 in method 200, except that different modes of resource configuration can be used. For the sake of brevity, detailed descriptions of the specific process are omitted here.
[00272] [00272] After the terminal device and the network device determine the location of the initial subcarrier to transmit the SRS, step 350 can be performed as follows: The terminal device sends the SRS based on the location of the initial subcarrier to transmit the SRS.
[00273] [00273] Correspondingly, at step 350, the network device receives the SRS from the terminal device based on the location of the initial subcarrier for transmitting the SRS.
[00274] [00274] It should be understood that a specific process of step 350 can be the same as in the state of the art. For the sake of brevity, detailed descriptions of the specific process are omitted here.
[00275] [00275] Therefore, based on the above technical solution, the polling region can be configured in the middle of the BWP, so that unused resources caused by displacement of the polling region to both sides of the BWP can be reduced, thereby improving resource usage. In addition, the unnecessary sending of SRS can be reduced, thus reducing power consumption.
[00276] [00276] This application also provides a method of sending and receiving a reference signal, to improve the accuracy of channel measurement and demodulation performance. With reference to Figure 7 to Figure 11, the method of sending and receiving the reference signal provided in the modalities of this application is described in detail.
[00277] [00277] Figure 7 is a schematic flowchart of a method of sending and receiving a reference signal 1000 according to yet another modality of this request from a device interaction perspective. Specifically, Figure 7 shows a specific process of sending and receiving an uplink reference signal. In method 1000 shown in Figure 7, a terminal device can be, for example, any of the terminal devices 104 to 114 in the communication system shown in Figure 1, a network device can be, for example, network device 102 in communications system shown in Figure 1, and the uplink reference signal can be, for example, an SRS. It should be understood that the terminal device can be any terminal device that is in a wireless communications system and that has a wireless connection to the network device. In addition, the network device and a plurality of terminal devices that are in the wireless communications system and that have a wireless connection relationship can transmit a reference signal based on the same technical solution. It should also be understood that in this modality of this request, the SRS is used as an example of the uplink reference signal to describe the technical solution provided in this request. However, this should not be a limitation on this request. This request does not exclude the possibility of defining another uplink reference signal in a future protocol to implement an equal or similar function.
[00278] [00278] As shown in Figure 7, method 1000 can include steps 1100 to 1500. Next, the steps of method 1000 are described in detail.
[00279] [00279] In step 1100, the terminal device sends an SRS based on the location of an initial subcarrier to transmit the SRS.
[00280] [00280] Correspondingly, in step 1100, the network device receives the SRS based on the location of the initial subcarrier to transmit the SRS.
[00281] [00281] Here, the initial subcarrier to transmit the SRS can include an initial subcarrier to transmit an SRS each time. It can be learned from Table 2 above that SRS transmission in a survey region can be completed using one or more SRS transmission opportunities. An SRS transmission time in this document can be understood as transmitting an SRS using an SRS transmission opportunity.
[00282] [00282] The polling region can be a resource configured for the terminal device to transmit the SRS or the polling region is the transmission bandwidth that can be used to transmit the SRS. The polling region can be understood as a region in which the terminal device conducts channel polling using the SRS. The terminal device can transmit the SRS on a resource in the polling region to perform the channel measurement.
[00283] [00283] Optionally, method 1000 also includes step 1200: The terminal device determines, based on a displacement of the survey region, the location of the initial subcarrier to transmit the SRS.
[00284] [00284] Correspondingly, method 1000 also includes step 1300: The network device determines, based on the displacement of the survey region, the location of the initial subcarrier to transmit the SRS.
[00285] [00285] In this modality of this request, the location of the initial subcarrier to transmit the SRS can be predefined, for example, it is defined in a protocol or it can be determined separately by the terminal device and the network device according to a predefined rule.
[00286] [00286] In a possible project, the network device and the terminal device can pre-store a mapping relationship that can be used to determine the location of the initial subcarrier to transmit the SRS. The mapping relationship can include a correspondence between the k / ”offset of the polling region, S KM, and k. A physical meaning of each parameter is described in detail above. For the sake of brevity, the details are not described here again. If the terminal device determines k ”and SD KMEM, the terminal device can directly determine ki” based on the previous match. For example, a two-dimensional mapping table can be pre-stored on the network device and the terminal device. A horizontal axis of the two-dimensional mapping table Pe be k ”, for example, and a vertical axis can be SKMEÉM for example, kk”. an intersection point of x and SKME ,, in the two-dimensional mapping table is k ”, in other words, kM and SKME ,, can be used together to indicate ki”. Each of ki ”, Bass Cas, AND A top layer parameter nx. to determine mn, it can be indicated by the network device, and a value of 3 KeMEy, can be determined based on the parameters indicated by the network device. Therefore, after determining the previous parameters, the network device can determine ki ”based on the two-dimensional mapping table, and indicate the previous parameters for theThe terminal device, so that the terminal device determines ki” based on the two-dimensional mapping table. . It should be understood that a specific SKME determination process, n, is described in detail above with reference to a Formula. For the sake of brevity, the details are not described here again.
[00287] [00287] In this project, Kk ("can be understood as an index value. The network device and the terminal device can determine a value of k (" based on the pre-stored mapping relationship. In other words, ki " can be determined based on ki ”.
[00288] [00288] It should be understood that the previous two-dimensional mapping table is only a possible implementation, but it should not constitute any limitation for this request. A specific method for predefining ki ”is not limited in this order.
[00289] [00289] In this embodiment of this request, the location of the initial subcarrier for transmitting the SRS can be calculated alternatively by the terminal device according to a predefined formula, for example, can it be calculated according to the Formula described above ki = k "SKMEP,. The specific parameters (for example, ki, Bus »Cass and the upper layer parameter n ,,, to determine n,) that are used to determine ky” can be indicated by the network device.
[00290] [00290] In conclusion, the ki location of the initial subcarrier to transmit the SRS can be determined based on ki ”.
[00291] [00291] Optionally, method 1000 also includes step 1400: The terminal device obtains the displacement of the polling region.
[00292] [00292] Correspondingly, method 1000 also includes step 1500: The network device obtains the displacement of the polling region.
[00293] [00293] In this modality of this request, the displacement can be predefined, for example, it is defined in a protocol, or it can be determined separately by the network device and the terminal device according to a predefined rule. One way to obtain displacement is not limited in this order.
[00294] [00294] Regardless of whether the offset is defined in the protocol or is determined separately by the network device and the terminal device according to the predefined rule, the offset can satisfy one of the following formulas: Formula 6: KI ”= k NE A + kG and Formula 7: KM = (nk ”+ K,) NS + k2.
[00295] [00295] The predefined rule can include any of the previous formulas.
[00296] [00296] Next, Formula 6 and Formula 7 are described separately in detail, with reference to the attached drawings.
[00297] [00297] It should be noted that, for ease of understanding, in the attached drawings (including Figure 8 to Figure 11) described below, the bandwidth of the uplink system is shown in the granularity of a group of RBs (RB group, RBG ). Each group of RBs includes n (where n is a positive integer) RBs, and a value of n is 4, 8, 16 or the like. It can be understood that n = O indicates that no resources are configured. However, it should be understood that a system bandwidth size is not necessarily an integer multiple of 4 RBs, and the system bandwidth size is not limited in this application. It should also be understood that the bandwidth of a BWP of the terminal device is not necessarily an integer multiple of 4 RBs and an amount of RBs between an RB in which an initial BWP Ssubporter of the terminal device (referred to as an initial RB is located of the BWP below for ease of description) and an initial system bandwidth RB is also not necessarily an integer multiple of 4. In addition, in each of the schematic diagrams shown in Figure 8 to Figure 11, it is assumed that the system bandwidth is 31 RBs and the RB numbers in the system bandwidth are arranged successively from top to bottom, starting from 0 to 30, where n = 4, It should be understood that the RB numbers in the system band are shown in the figure just for easy understanding. However, this should not be a limitation on this request. In this order, an RB numbering rule in the system bandwidth and an RB numbering rule in the BWP are not limited. For example, alternatively, the RB numbers in the system bandwidth can be arranged successively from bottom to top, starting from 0 to 30.
[00298] [00298] In Formula 6, KR ”is the offset of the polling region and is used to indicate a resource offset between an initial subcarrier of the polling region and an initial subcarrier of the BWP transmission bandwidth, k" ”and indicates a number of RBs between an RB in which the initial subcarrier of the polling region is located (referred to as an initial RB of the polling region below for ease of description) and an initial RB of the BWP's transmission bandwidth. understood that when an initial RB number of the BWP transmission bandwidth is O, k ”can indicate an RB number in which the initial subcarrier of the polling region is located.
[00299] [00299] In this modality of this request, k ”” is any value in [0, NI NS], and k ”and is an integer. N; & indicates a number of RBs included in the BWP transmission bandwidth of the terminal device, and NX indicates a number of RBs included in the polling region. It can be understood that in some cases, Nit can be an amount of RBs included in a first level survey region, namely, ms ...
[00300] [00300] Figure 8 is a schematic diagram of the drilling regions corresponding to different ki values ”. As the figure shows, the polling region is assumed to be 16 RBs, and the BWP bandwidth is 26 RBs. When k (”= 0, the initial subcarrier of the polling region of the terminal device is the initial subcarrier of the BWP, namely a lower limit of a frequency band corresponding to the BWP; when k” = NI-NX, the last subcarrier the polling region of the terminal device is the last subcarrier of the BWP, that is, an upper limit of the frequency band corresponding to the BWP; when k ”> NH —Nit, the polling region of the terminal device exceeds a range of the frequency band corresponding to the BWP.
[00301] [00301] The BWP of the terminal device is UE specific and may be only a part of the system bandwidth frequency band. If the polling region of the terminal device exceeds a bandwidth range of the BWP of the terminal device, the channel measurement accuracy may be reduced.
[00302] [00302] Therefore, it can be learned that k ”is any integer value in [0, NU —N%]. A value of k ”is limited, so that the polling region of the terminal device can be controlled within the BWP range of the terminal device. In this way, a problem that channel measurement accuracy is reduced because the SRS cannot be fully mapped to the BWP can be avoided, thereby improving demodulation performance.
[00303] [00303] Optionally, ki »satisfies mod [(k” + Ni ,,). Nl = A, A belongs to [0, n-1], and A is an integer.
[00304] [00304] Ni indicates an amount of RBs between the initial RB of the BWP of the terminal device and the initial RB of the system bandwidth. Optionally, if the value of n is 4, k ”satisfies modl (k” ”+ Ni ,,), nl = A, where A = O, 1, 2 or
[00305] [00305] In some cases, the physical resources to transmit an SRS through two or more terminal devices in the same cell or two or more antenna ports configured in the same terminal device may overlap. For example, part of the bandwidth of the BWPs of the two or more terminal devices or of the two or more antenna ports overlap, and the same combination parameter is set for the two or more terminal devices or the two or more antenna ports . In this case, an overlapping region of physical resources to transmit an SRS through any two terminal devices or antenna ports that have the same SRS transmission resource is expected to be greater than or equal to n RBs.
[00306] [00306] Optionally, in terminal devices in the same cell that are configured with the same combination parameter, if the resources to transmit an SRS over at least two terminal devices overlap, a value obtained by performing a module operation in n using an amount of RBs between an RB in which an initial subcarrier to transmit an SRS (referred to as an initial RB to transmit the SRS below for ease of description) by each of the two of the at least two end devices is located and the initial RB of the system bandwidth is the same, where n> 1, and n is an integer.
[00307] [00307] It can be learned from the previous description that k can be determined based on ko ", and because the resources for transmitting an SRS each time are an integer multiple of n RBs, with reference to Formula 6, to perform an operation of module in n using an amount of RBs between the initial RB to transmit the SRS and the initial RB of the system bandwidth can be represented by performing a module operation in n using an amount of RBs between the initial RB of the polling region and the initial RB of the bandwidth system, that is, a calculation formula MOdl (ks ”+ Nar) .N] is obtained. A value of MOAL (ks” + Nan), n] can be indicated as 4, A belongs to [1, n — 1], A and is an integer.
[00308] [00308] In other words, if two or more terminal devices in the same cell satisfy a condition (1) in which the same combination parameter is configured and a condition (2) in which the resources for transmitting an SRS overlap , an amount of RBs between a corresponding RB that is in the system bandwidth and to which an initial subcarrier to transmit an SRS through each of the two or more end devices is mapped and the initial RB of the system bandwidth can correspond to the same ModI value (k; ”+ Nay,), n]
[00309] [00309] Optionally, a number of RBs between a corresponding RB that is in the system bandwidth and for which an initial subcarrier to transmit an SRS through each of the two antenna ports on the same terminal device configured with the same parameter of combination is mapped and the initial RB of the system bandwidth corresponds to the same modI value (k; ”+ Nyy5), nl where n> len is an integer.
[00310] [00310] In other words, if two or more antenna ports in the same terminal device satisfy the condition (1) in which the same combination parameter is configured and the condition (2) in which the resources for transmitting an SRS are overlap, an amount of RBs between an initial RB to transmit an SRS through each of the two or more antenna ports and the initial RB of the system bandwidth can correspond to the same value of mModI (k; ”+ Niyu6), n]
[00311] [00311] A combination parameter can be used to determine a combined mapping location, and can be represented by k . A specific meaning of the combination parameter is described in detail above with reference to Figure 3. For the sake of brevity, the details are not described here again. k ”” indicates an amount of RBs between a corresponding RB that is in the system bandwidth and to which the initial subcarrier of the polling region is mapped (referred to as the initial RB of the polling region below for ease of description) and the initial RB of the system bandwidth, and can be used to determine the initial subcarrier of the polling region. Ny indicates an amount of RBs between the initial RB of the BWP and the initial RB of the system bandwidth, n> only an integer.
[00312] [00312] In other words, if two terminal devices or antenna ports satisfy only the condition
[00313] [00313] It should be noted that, an initial subcarrier used by the terminal device to transmit an SRS each time can satisfy the previous limitation in k ””, in other words, an initial subcarrier used by the terminal device to transmit an SRS using each SRS opportunity transmission can satisfy the previous limitation in k '”.
[00314] [00314] Optionally, the value of n is 4. In this case, the values of A can include 0, 1, 2 and 3.
[00315] [00315] That is, for terminal devices or antenna ports that are configured with the same combination parameter, A can be definitive. In a possible project, a correspondence between A and a combination parameter can be predefined, for example, it is defined in a protocol. Using n = 4 as an example, the values of A can include O, 1, 2 and 3. When four combination parameters are configured in the same cell, ie comb4, a value of A can be configured correspondingly for each parameter of combination. For example, A can be set to O for a first combination parameter; A can be set to 1 for a second combination parameter; A can be set to 2 for a third combination parameter; A can be set to 3 for a fourth combination parameter.
[00316] [00316] Because of the limitation described above, initial RBs for transmitting an SRS through a plurality of terminal devices or antenna ports that are configured with the same combination parameter and that have overlapping capabilities to transmit the SRS (in other words, satisfying condition (1) and condition (2)) overlap, or an offset is an integer multiple of 4 RBs. This can ensure that when terminal devices or antenna ports that are configured with the same combination parameter send an SRS using the same physical resource, a resource overlap region of the terminal devices or antenna ports can be greater than or equal to 4 RBs .
[00317] [00317] When two terminal devices in the same cell satisfy both condition (1) and condition (2), or when two antenna ports in the same terminal device satisfy both condition (1) and condition (2), it is generally advantageous to ensure that an overlapping region for transmitting an SRS is greater than or equal to 4 RBs. For example, in some cases, resource scheduling flexibility can be improved.
[00318] [00318] For example, in some communication systems, for example, in 5G NR, if the terminal device sends a reference signal, such as an SRS in the BWP bandwidth, using several antenna ports configured with the same parameter of In combination, the time domain resources used by the plurality of antenna ports to send the reference signal may overlap, and interference can be reduced in a code division multiplexing (CDM) manner. In addition, in system bandwidth, the bandwidth of BWPs from a plurality of terminal devices can also overlap, in other words, the time-frequency resources used by different terminal devices to send a reference signal can also overlap, and interference can be reduced in a CDM manner, thereby improving resource utilization.
[00319] [00319] When receiving a reference signal from the terminal device, a receiving end device (for example, the network device) can separately perform channel measurement on the received reference signal based on an overlapping part of resource and an overlapping part of the appeal. It can be learned from a simulation experiment that when the overlapping part of the resource is greater than or equal to 4 RBs, the accuracy of channel measurement is greatly improved and it is possible to obtain a better demodulation performance. Therefore, it is expected that the overlapping part of the resource can be controlled with more than 4 RBs.
[00320] [00320] It should be noted that, although the example in which the value of n is 4 is provided in this order, this should not constitute any limitation for that order. The value of n is not limited in this order. As long as the accuracy of channel measurement can be improved to improve demodulation performance, this order does not exclude the possibility of setting the value of n as another value.
[00321] [00321] Whereas the bandwidth of an SRS polling region is specified as an integer multiple of 4 RBs in a current standard, in this modality of this order, initial RBs to transmit an SRS through any two terminal devices in one same cell that satisfy condition (1) and condition (2) or any two antenna ports on the same terminal device that satisfy condition (1) and condition (2) can be controlled to be in the same RB location or in a location whose displacement is an integer multiple of 4 RBs, so that the possibility that the frequency domain resources used by different terminal devices in the same cell to transmit an SRS have an overlapping region of 4 RBs or more than 4 RBs can be greatly enhanced, or a possibility that the frequency domain capabilities of an SRS that correspond to different antenna ports on the same terminal device have an overlapping region This range of 4 RBs or more than 4 RBs can be greatly improved, thereby improving the SRS resource scheduling flexibility and improving resource utilization.
[00322] [00322] Figure 9 is a schematic diagram of the system bandwidth, and the bandwidth of BWP and polling regions of different terminal devices according to one embodiment of this request. As shown in the figure, the bandwidth of a BWP from one terminal device (for example, denoted as a terminal device * 1) is 26 RBs, and the bandwidth of a BWP from another terminal device (for example, denoted as a terminal device 42) is 22 RBs. Both the probing region of the terminal device 41 and the probing region of the terminal device% 2 there are 16 RBs, and the resources to transmit an SRS through the HÀ1 terminal device and the% 2 terminal device overlap.
[00323] [00323] It can be learned that neither the system bandwidth nor the bandwidth of the BWPs of the two terminal devices is an integer multiple of 4. If it is necessary to ensure that the resources of the probe region of the terminal device are integers multiple of 4 RBs, and it is also expected to ensure that a resource overlap region used by the two end devices to transmit an SRS is greater than or equal to 4 RBs, the initial locations for transmitting an SRS by the two end devices can be the same. For example, an offset between an initial RB to transmit an SRS and an initial RB of the system bandwidth is an integer multiple of 4 RBs, and the initial RB to transmit the SRS can correspond to a location of an RB 12 in width system bandwidth in the figure, or a location of an RB 8 in the system bandwidth.
[00324] [00324] In addition, it can also be learned that if a system bandwidth bottom shown in Figure 9 is aligned with a BWP bandwidth bottom of terminal device 41, the last three RBs at the bottom of the system band in the figure are always undetected. This is because it is necessary to guarantee the same A value for terminal device 41 and terminal device 42. However, when an initial RB of the polling region is RB 12 in the system bandwidth, the polling region of the device terminal% 2 reaches the bottom of the BWP and cannot be moved downwards, that is, the polling region of the terminal device% 2 cannot be moved downwards by changing the value of A. To guarantee the same value of A as the device terminal% 2, the polling region of terminal device% & 1 can be shifted down by 4 RBs. However, if the polling region of the & 1 terminal device is shifted down by 4 RBs, the polling region of the terminal device 41 may also exceed a BWP interval. Therefore, the polling region of terminal device 41 cannot be shifted downward as well, and consequently, some resources in the system bandwidth are always detected. It can be understood that, as it is necessary to ensure that a size of the polling region is an integer multiple of 4 RBs, a case where some end resources in the system bandwidth are always detected usually occurs when the system bandwidth is not an integer multiple of 4
[00325] [00325] However, if a terminal device (for example, indicated as terminal device 43) that is configured with another combination parameter (ie different from a combination parameter configured for terminal device 41) and that overlaps with the BWP of terminal device 41 exists in the same cell, A of terminal device 43 can be set to enable features to transmit an SRS through terminal device 43 to cover the three RBs at the bottom of the system bandwidth. In other words, the network device can implement total bandwidth measurement of the system bandwidth by setting values other than A for terminal devices that are configured with parameters of different combinations.
[00326] [00326] Figure 10 is a schematic diagram of the system bandwidth, BWP bandwidth, and polling regions corresponding to different values of A according to one embodiment of this request. As the figure shows, it is assumed that the bandwidth of a BWP for each end device is 26 RBs, and a size for each polling region is 16 RBs. A resource offset between an initial BWP RB of the terminal device and an initial RB of the system bandwidth can be represented by Nie, and a sum of Nm and k ”can be exactly combined to form a continuous region. An RB occupied by the continuous region corresponding to any two terminal devices or any two antenna ports configured with the same combination parameter satisfies mod (ks "+ Nywe), N1 = A ym n value in Figure 10 is 4.
[00327] [00327] In the figure, k ”of a terminal device 41 satisfies MOdI (k;" + Niú) .Nl = 0 it can be learned that an initial RB of a probe region of the terminal device 41 can be an RB 8 or an RB 12 in the system bandwidth The figure shows a case in which the initial RB of the polling region corresponds to RB 8 or RB 12 in the system bandwidth. If K ”of a terminal device 43 satisfies modI (k; s "+ Ny, 1) Nl = 3 an initial RB of a polling region of terminal device 43 can be an RB 7 in the system bandwidth, an RB 11 in the system bandwidth or an RB 15 in the bandwidth of system. It can be learned that when the initial RB of the polling region of terminal device 43 is RB 15 in the system bandwidth, three RBs at the bottom of the system bandwidth can be accurately detected. In that case, the network device can perform full bandwidth channel measurement on the system bandwidth.
[00328] [00328] Therefore, when terminal devices or antenna ports that are configured with different combination parameters correspond to different values of A in O, 1, 2 and 3, it is highly likely that probing regions of different terminal devices or antenna ports can be flexibly configured in an interval between RB 8 and RB 30. To implement the total bandwidth measurement, the network device can determine a value of A based on the relative locations of the polling regions of a plurality of terminal devices or antenna ports in the system bandwidth.
[00329] [00329] For any two terminal devices or antenna ports that are configured with the same combination parameter, if the initial locations for transmission of an SRS can be controlled to be in the same RB or in a location whose displacement is an integer multiple of 4 RBs, it can be widely guaranteed that the frequency domain resources used by the two terminal devices or antenna ports to transmit the SRS have an overlapping region of 4 RBs or more than 4 RBs. For example, when a value of K in the figure is O, for two terminal devices that have the same combination parameter, an initial RB of a probe region for a terminal device can be the RB 8 shown in the figure, and an initial RB of a probe region on the other terminal device can be RB 12 or RB 8. In this case, an overlapping region of the probe regions on the two terminal devices includes at least 12 RBs, and a condition that the overlapping region is greater than equal or equal to 4 RBs.
[00330] [00330] It should be understood that, to facilitate understanding, the above describes in detail the limitation in the value of 4 with reference to Figure 10. However, this will not constitute any limitation for this request. In the figure, the BWP bandwidth of the terminal device 41 and the BWP bandwidth of the terminal device 43 may be different, and the sizes of the probe regions of the terminal device 41 and the terminal device 43 may also be different. The bandwidth of the BWP and a probe region size of a terminal device are not limited in this order.
[00331] [00331] Therefore, the value of ko is additionally limited by the configuration of A, so that the terminal devices or antenna ports that are configured with different combination parameters can send an SRS in different frequency bands of the system bandwidth, and it is possible for the network device to implement full bandwidth measurement, thereby improving data transmission performance for the entire bandwidth and improving resource utilization and resource scaling flexibility.
[00332] [00332] Optionally, the method also includes: sending, through the network device, information indicating a value of k "", where the information indicating a value of ki.
[00333] [00333] Correspondingly, the method also includes: receiving, by the terminal device, the information indicating a value of k ””, where the information indicating the value of k ”.
[00334] [00334] Based on the previous limitation in the value of ki ”, the network device can determine the value of k”, and send the indication information to the terminal device to indicate the value of k ””. Therefore, both the network device and the terminal device can determine k ("according to Formula 6 based on the same value of k '", to determine k ".
[00335] [00335] Optionally, the k ”indication information is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[00336] [00336] It should be understood that the signaling to carry the information of indication of k ”” here is only an example for description, but should not constitute any limitation for this request. For example, the indication information for k "" "can be carried alternatively in MAC-CE.
[00337] [00337] It should be noted that the previous value of k ”can be configured at the UE level or a port level, and the terminal device can be notified using signaling corresponding to a configuration level. This is not limited in this order.
[00338] [00338] Optionally, the method also includes: sending, through the network device, indication information of a Ni value, where the indication information indicates a value of Nino +
[00339] [00339] Correspondingly, the method also includes: receiving, by the terminal device, the information indicating a value of N; ,,, where the information indicating the value of Nu,
[00340] [00340] The network device indicates the value for the terminal device, so that the terminal device determines a location of the BWP in the system bandwidth based on the value of Nu.
[00341] [00341] In Formula 7, nki + K, indicates an amount of RBs between a corresponding RB that is in the system bandwidth and to which the initial subcarrier of the polling region is mapped and the initial RB of the bandwidth of system. Nswe tKa indicates an amount of RBs between the initial RB of the polling region and the initial RB of the system bandwidth. Specifically, K, belongs to [0, n— 11], and K, is an integer. * ”Can indicate an interval of an initial RB from a mappable location of the survey region, in other words, a range of resources available to the initial subcarrier of the survey region.
[00342] [00342] It can be understood that when an initial RB number of the system bandwidth is O, nki ”+ K, it can indicate a corresponding RB number that is in the system bandwidth and for which the initial subcarrier of the poll region is mapped.
[00343] [00343] Optionally, the value of n is 4.
[00344] [00344] It can be learned that "X" in Formula 7 and Kk "in Formula 6 satisfy the following relationship: nkit + K, = k Unlike Formula 6, a value of Ka is configured directly in Formula 7.
[00345] [00345] In Formula 7, a value of nk ”+ K, can be controlled with an interval of [O, Not Ni] and therefore a value of 4” can be any value in [O, [Nx Nãs Ka) / n | l, to ensure that the polling region of the terminal device does not exceed the bandwidth range of the BWP of the terminal device, thereby avoiding a problem that the channel measurement accuracy is reduced because the polling region exceeds the bandwidth of the BWP.
[00346] [00346] If the value of n is 4, an upper limit of the value of & is LN No Ka) The tº vector is limited, so that the mappable location of the polling region within the BWP bandwidth range is limited, to ensure that channel measurement can be performed within the BWP bandwidth range, thereby achieving relatively high channel measurement accuracy and improving demodulation performance.
[00347] [00347] In other words, a region corresponding to * ”in the figure shows the range of resources available to the initial subcarrier of the probe region of the terminal device. That is, when the RB that is in the system bandwidth and to which the initial subcarrier of the polling region of the terminal device is mapped is in the region shown by *% ”in the figure, a relatively high channel measurement accuracy can be obtained.
[00348] [00348] In a possible case, the offset between the initial RB of the BWP of the terminal device and the initial RB of the system bandwidth is exactly an integer multiple of n, and the value of É »is O. In this case, 4k "= N !! —N &,
[00349] [00349] Optionally, in terminal devices in the same cell that are configured with the same combination parameter, if resources to transmit an SRS over at least two terminal devices overlap, an amount of RBs between a corresponding RB that is in the width of system band and for which an initial subcarrier to transmit an SRS (an initial RB to transmit the SRS) for each of any two at least two end devices and the initial RW of the BWP corresponds to the same Modlink value ”+ K, + Node6) .Nl onden> 1, and is an integer.
[00350] [00350] Because mod (nk; ", n) = 0 the previous Formula can be additionally transformed into MOX, + Nx.) Nl, ya Modl value (K, + Nswe), n] can be indicated as 4, A belongs to [1,
[00351] [00351] In other words, if two or more terminal devices in the same cell both satisfy a condition (1) in which the same combination parameter is configured and a condition (2) in which resources for transmitting an SRS overlap , an amount of RBs between the initial RB of the survey region and the initial RB of the BWP corresponds to the same Modl value (Ka + Niw), nl,
[00352] [00352] Optionally, a number of RBs between a corresponding RB that is in the system bandwidth and for which an initial subcarrier to transmit an SRS for each of any two antenna ports on the same terminal device that are configured with the the same combination parameter is mapped and the initial RB of the system bandwidth corresponds to the same modl value (K, + Ni6.). Nl, where n> 1, and n is an integer.
[00353] [00353] In other words, if two or more antenna ports on the same terminal device satisfy the condition (1) in which the same combination parameter is configured and the condition (2) in which the resources for transmitting an SRS are overlap, an amount of RBs between an initial RB to transmit an SRS through each of the two or more antenna ports and the initial RB of the system bandwidth can correspond to the same MeAlK value, + Ni), nl,
[00354] [00354] In addition, as described above with reference to Figure 9, in some cases, a portion of system bandwidth may always be undetected, that is, the network device cannot perform bandwidth channel measurement total system bandwidth, thus affecting the system bandwidth resource usage. Therefore, the network device can set values other than A for modl (K, + Nry ,,), n] l corresponding to the terminal devices or antenna ports that are configured with different combination parameters.
[00355] [00355] It can be understood that, Ni, in the previous Formula is configured by the system. If the value of K is configurable, the different values of A can be configured “to modl (K, + Nr ,,) nl corresponding to the terminal devices or antenna ports that are configured with different combination parameters, where K belongs a [0, n-1], and K, is an integer.
[00356] [00356] Unlike Formula 6, the value of K is directly configured in Formula 7. However, it can be understood that, regardless of the value of N ,,,, as long as K, it can be any value in [0, n —1], the modl (K, + Ny ,,) nl value can be guaranteed to be any value in [0, n-1].
[00357] [00357] It can be understood that when K, and Ni, are definitive, the value of A can be the same or different from the value of K ,. A relationship between K, and A is not limited in this order.
[00358] [00358] The network device can configure different K, for the terminal devices or antenna ports that are configured with different parameters of combinations, so that different terminal devices or antenna ports can send an SRS in different frequency bands the width of system bandwidth, and it is possible for the network device to implement total bandwidth measurement, thereby improving the data transmission performance of the entire bandwidth, and improving resource utilization and resource scaling flexibility.
[00359] [00359] Figure 11 is a schematic diagram of the system bandwidth, BWP bandwidth, and polling regions corresponding to different K values, and different k ”values according to one embodiment of this order. It is assumed that the bandwidth of each BWP is 26 RBs, and the size of each polling region is 16 RBs. A BWP location of a terminal device 41 and a BWP location of a terminal device% & 2 are the same in the system bandwidth, and Ny, = 5 corresponds to the terminal device% * 1 and the terminal device% & 2. The location of a BWP of a terminal device 43 in the system bandwidth is different from the location of the BWP of terminal device 1 or of terminal device 42 in the system bandwidth, and Ni, = 4 corresponds to terminal device 43. As the size of the polling region is 16 RBs and the BWP bandwidth is 26 RBs, NIF — NK is equal to 10. In other words, 4k! ” can be a value in [0, 10] ek ”” "can be a value in [0, 2]. The locations of the polling regions of the end devices in the system bandwidth when K, = 3 and k” = 0 corresponding to terminal device 41, K, = 0 and k ”" = | corresponding to terminal device 3, and K, = 3 and k ”= l corresponding to terminal device * 2 are shown separately in the figure.
[00360] [00360] In addition, to ensure that an overlapping region of the frequency domain resources to transmit an SRS through terminal devices or antenna ports that are configured with the same combination parameter is greater than or equal to an integer multiple of n RBs , it is expected that the initial locations of the frequency domain resources to transmit the SRS through the terminal devices or through the antenna ports that are configured with the same combination parameter can be controlled to be in the same RB or a location whose displacement is a integer multiple of n RBs. Optionally, a value of 4.
[00361] [00361] For example, the values of XK, are the same and the difference between the values of KR is for the terminal device 41 and the terminal device 42 in the figure, that is, a displacement between the initial RBs of the drilling regions of the two terminal devices is 4 RBs. Since the value of n in the figure is 4, the offset is k "RBs.
[00362] [00362] Furthermore, the network device expects to configure values other than K, for terminal devices or antenna ports that are configured with different combination parameters, to implement the measurement of total bandwidth. The value of K, can be controlled with an interval of [0, n-1], and the different values of É. can be configured for terminal devices or antenna ports that are configured with different combination parameters. When the value of n is 4, the value of Ka can be 0, 1, 2 or 3.
[00363] [00363] Still referring to Figure 11, if ke is 2 based on É. = 3 in the figure, the polling region exceeds the BWP bandwidth, thus reducing the channel measurement accuracy. However, to ensure that the polling region does not exceed the BWP bandwidth, three RBs at the bottom of the system bandwidth are always undetected. In this case, the K value can be adjusted for terminal devices that are configured with different combination parameters and have the same BWP. For example, the value of É. can be set to 2, to ensure that the polling region does not exceed the bandwidth of the BWP, and the total bandwidth measurement of the system bandwidth can be implemented. It should be understood that the Ka value for implementing total bandwidth measurement here is merely an example, but should not be a limitation on this request. In the communications system, bandwidth and BWP locations between end devices can be different. The network device can determine, based on a BWP location for each terminal device, a polling region for each terminal device, and system bandwidth, a Fa value corresponding to each terminal device.
[00364] [00364] Therefore, a mapping location of the polling region is additionally limited by setting the value of K ,, so that the terminal devices or antenna ports that are configured with different combination parameters can send an SRS in different frequency bands of the width system bandwidth, and it is possible for the network device to implement total bandwidth measurement, thereby improving data transmission performance for the entire bandwidth, and improving resource utilization and resource scaling flexibility . Optionally, the method also includes: sending, through the network device, information indicating a value of ko where the information indicating an value of kt
[00365] [00365] Correspondingly, the method also includes: receiving, through the terminal device, the indication information of a value of ko where the indication information indicates the value of K ”,
[00366] [00366] Optionally, the method also includes: sending, through the network device, information indicating a value of K ,, where the information indicating indicates a value of K,
[00367] [00367] Correspondingly, the method also includes: receiving, through the terminal device, the indication information of K ,, where the indication information indicates the value of k ”.
[00368] [00368] Based on the previous limitations on the values of k ”" and K ,, the network device can determine the values of k ”" and K ,, and send the indication information to the terminal device to indicate the values of k ” and K,. Therefore, the network device and the terminal device can determine Kkí ”according to Formula 7 based on the same value of km, and the same value of K ,, to determine ki.
[00369] [00369] Optionally, the k ”indication information is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[00370] [00370] Optionally, the K indication information is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[00371] [00371] It should be understood that the signaling to carry the indication information of k ", the signaling to carry the indication information of K ,, and a number of signaling parts are merely examples of description, but should not constitute any limitation for this order. For example, the k indication information and the K indication information can be carried in a signaling part or in a signaling group. For another example, the indication information for k! ” it can be carried alternatively in MAC-CE, and the K indication information can be carried alternatively in MAC-CE.
[00372] [00372] It should be noted that the previous values of k ”and K, can be configured at a UE level or at a port level, and the terminal device can be notified using signaling corresponding to a configuration level. This is not limited in this order.
[00373] [00373] Optionally, the method also includes: sending, through the network device, information indicating a Ni value ,,, where the indication information indicates a value of Ny +
[00374] [00374] Correspondingly, the method also includes: receiving, by the terminal device, the indication information of N; x ,,, where the indication information indicates the value of Nu.
[00375] [00375] The network device indicates the value of N ;, for the terminal device, so that the terminal device determines a location of the BWP in the system bandwidth based on the value of Nu.
[00376] [00376] Based on the previous technical solution, in this modality of this request, the location of the initial subcarrier to transmit the SRS by the terminal device is determined based on the BWP of the terminal device in NR, and the SRS is transmitted based on the location of the subcarrier initial, so that a resource that is configured for each terminal device to transmit an SRS is UE-specific, and the resource to transmit the SRS can be configured based on the transmission or reception capacity of each terminal device and a requirement for width measured bandwidth. Thus, this order is more suitable for an NR scenario. In addition, an interval type is not limited in the method for determining the location of the initial subcarrier for transmitting the SRS provided in this embodiment of this request.
[00377] [00377] In addition, the initial location of the initial subcarrier for transmission of the SRS is limited, so that a possibility that an overlapping part of the frequency domain resources used to transmit an SRS through terminal devices or antenna ports that are configured with the same combination parameter is greater than or equal to an integer multiple of n RBs or an overlapping portion of the SRS frequency domain resources that correspond to different ports is greater than or equal to an integer multiple of n RBs. This can improve the accuracy of the channel measurement, for better demodulation performance. In addition, terminal devices or antenna ports that are configured with different combination parameters can transmit an SRS on different frequency domain resources, so that the network device can implement the total bandwidth measurement of the system bandwidth , and the communications system can achieve better demodulation performance across the entire system bandwidth, thereby improving resource utilization.
[00378] [00378] Based on the technical solution above, this modality of this request provides a plurality of possible implementations of the method to send and receive an uplink reference signal, and all implementations can be applied to a BWP configured based on the level of EU, for example, a BWP in NR. However, in downlink channel measurement, there is also a BWP configured at the UE level. If the network device needs to measure only the CSI of a subband in a specified period, the network device can send a CSI-RS on BWPs that are from one or more terminal devices and that correspond to the subband, to measure the subband CSI, and you no longer need to send the CSI-RS at full bandwidth. Therefore, this request also provides a method of sending and receiving a reference signal, to indicate a location in which the terminal device receives a CSI-RS, in order to be applicable to the resource configuration for a downlink reference signal in NR.
[00379] [00379] Figure 12 is a schematic flowchart of a method of sending and receiving a reference signal according to yet another modality of this request from a device interaction perspective. Specifically, Figure 12 shows a specific process of sending and receiving a downlink reference signal. In method 2000 shown in Figure 12, a network device can be, for example, network device 102 in the communications system shown in Figure 1, and a terminal device can be, for example, any of the terminal devices 104 to 114 in the communications system shown in Figure 1. It should be understood that the terminal device can be any terminal device that is in a wireless communications system and that has a wireless connection to the network device. In addition, the network device and a plurality of terminal devices that are in the wireless communications system and that have a wireless connection relationship can transmit a reference signal based on the same technical solution.
[00380] [00380] It should be understood that in this modality of this request, a CSI-RS is used as an example of the downlink reference signal to describe the technical solution provided in this request. However, this should not be a limitation on this request. This request does not exclude the possibility of defining another downlink reference signal in a future protocol to implement a similar or similar function, for example, a demodulation reference signal, DMRS, a tracking reference signal (Tracking reference signal, TRS) or a phase tracking reference signal, PTRS.
[00381] [00381] It should also be noted that in method 2000 described below, a BWP of the terminal device and the system bandwidth can be a downlink BWP and downlink system bandwidth. For the same terminal device, a downlink BWP can be independent of an uplink BWP. For a communications system, the downlink system bandwidth can also be independent of the uplink system bandwidth. For example, in a frequency division Duplex (FDD) duplexing system, a downlink BWP
[00382] [00382] As shown in Figure 12, method 2000 can include steps 2100 to 2500. Next, the steps of method 2000 are described in detail.
[00383] [00383] In step 2100, the network device sends a CSI-RS based on an initial domain location of the frequency of a resource to transmit the CSI-RS.
[00384] [00384] Correspondingly, in step 2100, the terminal device receives the CSI-RS based on the initial domain location of the frequency of the resource to transmit the CSI-RS.
[00385] [00385] CSI-RS can be used to perform downlink channel measurement. Specifically, the network device can send the CSI-RS over a downlink channel. The terminal device can measure the downlink channel based on the received CSI-RS to determine the channel status information (CSI), and return the CSI to the network device, so that the network device performs resource scaling.
[00386] [00386] Specifically, the network device can preconfigure the resource for transmission of the CSI-RS, and send the CSI-RS based on the configured resource. Since a BWP for each end device is configured at the UE level, locations and transmission bandwidth for the BWPs of different end devices may be different. Each terminal device can receive a CSI-RS from the network device in the transmission bandwidth of a BWP from each terminal device based on a resource for transmitting the CSI-RS.
[00387] [00387] In a possible case, resources corresponding to the BWPs of two or more terminal devices in the same cell overlap, and the pilot regions of the two or more terminal devices also fit into the overlapping resource. In this case, the two or more terminal devices can receive the same CSI-RS from the network device in the same resource. In other words, a plurality of terminal devices in the same cell can share the same CSI-RS from the network device.
[00388] [00388] The initial location of the frequency domain of the resource to transmit the CSI-RS can be indicated by an RB, namely, an initial RB for transmission of the CSI-RS. The initial RB for transmission of the CSI-RS can be determined based on an initial RB for a pilot region. Here, the pilot region can be understood as a range of transmission bandwidth that can be used to transmit the CSI-RS. For a terminal device, a resource in a pilot region of the terminal device can be a region configured by the network device so that the terminal device receives a CSI-RS. A pilot region generally has a BWP transmission bandwidth range, in other words, a pilot region bandwidth size is less than or equal to a BWP transmission bandwidth size and a location in the region pilot is usually also in a resource corresponding to the BWP. The terminal device can receive the CSI-RS in a resource corresponding to the pilot region, to perform downlink channel measurement.
[00389] [00389] However, it should be understood that the pilot region can be used to transmit the CSI-RS, but that does not mean that the network device will certainly transmit the CSI-RS in full bandwidth of the pilot region. In this modality of this request, the resources for transmitting a CSI-RS can be consecutive or non-consecutive. Specifically, the resources for transmission of the CSI-RS can be divided into the granularity of a group of RBs. The resources for transmission of the CSI-RS can be consecutive in a group of RBs, and can be consecutive or non-consecutive between groups of RBs. Therefore, consecutive or non-consecutive features are described here in the granularity of a group of RBs. Each group of RBs can include m RBs, where m> 1, m is a positive integer. Optionally, a value of m can be an integer multiple of 4, for example, 4, 8 or 12.
[00390] [00390] If the resources for transmission of the CSI-RS are consecutive, the network device can send the CSI-RS in the total bandwidth of the entire pilot region; if the resources for transmitting the CSI-RS are not consecutive, the network device may send the CSI-RS on some resources in the pilot region. Regardless of whether the resources for transmission of the CSI-RS are consecutive or non-consecutive, the initial RB for transmission of the CSI-RS is related to a location in the pilot region. For example, if the resources for transmission of the CSI-RS are consecutive, the initial RB for transmission of the CSI-RS may be the initial RB of the pilot region. If the resources for transmission of the CSI-RS are non-consecutive, the initial RB for transmission of the CSI-RS can be the initial RB of the pilot region or an RB in the middle of the pilot region. The following describes a case in which the resources for transmission of the CSI-RS are consecutive or non-consecutive in detail with reference to the attached drawings. The location in the pilot region can be indicated by a shift in the pilot region. The pilot region offset can be a resource offset between the initial RB and an initial BWP RB, or it can be a resource offset between the pilot region's initial RB and an initial system bandwidth RB. In this case, the initial RB for transmission of the CSI-RS can be determined based on the displacement of the pilot region. In addition, the network device can complete the transmission of CSI-RS in the pilot region using one or more transmission opportunities. This is not limited in this order.
[00391] [00391] It should also be noted that the CSI-RS can be a CSI-RS of zero power or a CSI-RS of non-zero power. If the CSI-RS is a zero power CSI-RS, theThe network device cannot carry a signal on the resource to transmit the CSI-RS. Therefore, regardless of a non-zero power CSI-RS or non-zero power CSI-RS, the resource determined to transmit the CSI-RS is not used to transmit another signal.
[00392] [00392] Optionally, method 2000 also includes step 2200: The network device determines the displacement of the pilot region.
[00393] [00393] Correspondingly, method 2000 also includes step 2300: The terminal device determines the displacement of the pilot region.
[00394] [00394] In this modality of this request, a pilot region of each terminal device can be configured by the network device. The network device can determine a location and pilot region size for each terminal device based on a size of the entire downlink system bandwidth and a location and size of a BWP of a terminal device by accessing the device system bandwidth. It should be understood that a specific method for determining the location and size of the pilot region of each terminal device by the network device may be the same as the state of the art. For the sake of brevity, detailed descriptions of the specific process are omitted here.
[00395] [00395] Optionally, method 2000 also includes: sending, through the network device, information indicating the displacement of the pilot region.
[00396] [00396] After determining the location in the pilot region, the network device can notify the terminal device of information about the pilot region (for example, information including the displacement of the pilot region and a pilot region bandwidth size) using signaling .
[00397] [00397] Specifically, the network device can notify the terminal device of the displacement of the pilot region in any of the following ways:
[00398] [00398] Way 1: The network device sends indication information of a first displacement k, (an example of information indicating the displacement of the pilot region) to the terminal device, where the indication information indicates a value of the first displacement k ,, and the first offset k, indicates an amount of RBs between the initial RB of the pilot region and the initial RB of the BWP.
[00399] [00399] Way 2: The network device sends indication information of a second displacement T, to the terminal device, where the indication information indicates a value of the second displacement T, of the pilot region, and the second displacement T, indicates a amount of RBs between an initial RB of a mappable region of the pilot region and the initial BWP RB.
[00400] [00400] The network device sends indication information of a third k displacement, to the terminal device, where the indication information indicates a value of k, and the third displacement k, indicates a number of groups of RBs included in a quantity of RBs between the initial RB of the pilot region and the initial RB of the mapped region of the pilot region.
[00401] [00401] The indication information for the second displacement and the information about the third displacement can be understood as another example of the displacement of the drilling information.
[00402] [00402] Way 3: The network device sends indication information of the initial RB of the pilot region (another example of the indication information of the displacement of the pilot region) to the terminal device, where the indication information indicates an RB number corresponding to the Pilot region initial RB in system bandwidth.
[00403] [00403] In the following, specific implementation processes are described in detail in the three previous ways, with reference to the attached drawings.
[00404] [00404] It should be noted that, to facilitate understanding, in each of the attached drawings (including Figure 13 to Figure 16) described below, the bandwidth of the downlink system is shown in the granularity of a group of RBs.
[00405] [00405] In Way 1, the first displacement k, is the displacement of the pilot region, and the terminal device can directly determine the initial RB of the pilot region based on the first displacement k ,. To ensure that the pilot region does not exceed a BWP range, a k value can be further limited. That is, k, belongs to [O, NL NH], k and is an integer. At; can indicate a number of RBs included in the BWP's transmission bandwidth, and is distinct from the Nf above. Ni can indicate a number of RBs included in the pilot region.
[00406] [00406] Figure 13 is a schematic diagram of the system bandwidth, and a pilot region and a BWP of a terminal device according to one embodiment of this application. As shown in the figure, the transmission bandwidth N ;; of the BWP of the terminal device is 26 RBs. When k, = O, an initial RB of the pilot region of the terminal device is an initial RB of the BWP, that is, a lower limit of a frequency band corresponding to the BWP; when k, = Ní; —Nif, the last RB of the pilot region of the terminal device is the last RB of the BWP, that is, an upper limit of the frequency band corresponding to the BWP; when k> NZ NX, the pilot region of the terminal device exceeds a frequency band interval corresponding to the BWP.
[00407] [00407] The BWP of the terminal device is UE specific and can only be a part of system bandwidth. If the pilot region of the terminal device exceeds a bandwidth range of the BWP of the terminal device, the channel measurement accuracy may be reduced.
[00408] [00408] Therefore, it can be learned that k, is any integer value in [0, N & NX]. A value of k is limited,
[00409] [00409] Optionally, the information of indication of the first displacement is carried in signaling of upper layer. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[00410] [00410] It should be understood that carrying the information of indication of the first displacement k in the RRC message is only a possible implementation, but it should not constitute any limitation for this request. For example, the indication of the first displacement k. can be transported alternatively in MAC-CE.
[00411] [00411] In Way 2, the second displacement T ,, The third displacement k, and the first displacement k, in Formula 1 satisfy the following relation: mk + T, = k, Specifically, mk, can indicate an amount of RBs between the initial RB of the pilot region and the initial RB of the mapped region of the pilot region. It can be understood that mk is an integer multiple of m.
[00412] [00412] T, belongs to [0, m —1]. The value of the first displacement k, is limited in Way 1, and a range of k values can be obtained, that is, k belongs to [O, | (NF Ni TI, / m |], and both T, and k are integers.
[00413] [00413] It may be specified in a future protocol that initial RBs to send a CSI-RS to a plurality of terminal devices with an overlapping BWP are aligned in the same location or an offset of m RBs is guaranteed, to reduce interference, thus ensuring the accuracy of channel measurement and improving demodulation performance. Therefore, the first displacement k, is divided into T, and k, where T, can be configured by the network device. For example, values other than T are configured for end devices configured with different BWP bandwidth sizes.
[00414] [00414] Figure 14 is another schematic diagram of the system bandwidth, and a pilot region and a BWP of a terminal device according to an embodiment of this request. As shown in the figure, the transmission bandwidth N7 ! of a BWP of a terminal device (for example, denoted as a terminal device 41) of 26 RBs, and an N / N amount of RBs between an initial RB of the BWP and an initial RB of the system bandwidth is 5; the transmission bandwidth Ni of a BWP from another terminal device (for example, denoted as a terminal device * 2) is 22 RBs, and an N / N amount of RBs between an initial RB of the BWP and the initial RB of the width system bandwidth is 6. Ni ,, indicates the number of RBs between the initial RB of the terminal device's BWP and the initial RB of the system bandwidth.
[00415] [00415] Because there is a region of overlap in the regions to which the BWPs of the two end devices are mapped in the system bandwidth, the two end devices can share the same CSI-RS sent by the network device in the overlap region, as shown in the figure. Considering that the transmission bandwidth of a CSI-RS defined in a current standard can be an integer multiple of 4 RBs, an initial CSI-RS location can be an RB 8 in the system bandwidth shown in the figure, or it can be an RB 12 in the system bandwidth. This is not limited in this order. In other words, an initial RB from a mappable location in the pilot region can vary from RB 8 in the system bandwidth to RB 12 in the system bandwidth.
[00416] [00416] For different terminal devices, the values of T, can be different because the BWPs are mapped to different locations in the system bandwidth. For example, T, = 3 corresponds to the terminal device * 1 shown in the figure and T, = 2 corresponds to the terminal device% 2.
[00417] [00417] Furthermore, the system bandwidth or the transmission bandwidth of the BWP is not necessarily an integer multiple of m RBs. Therefore, some RBs may not be detected. To implement the total bandwidth measurement of the system bandwidth, the network device can configure different T's for different terminal devices, and the transmission capabilities of different CSI-RSs are located at different locations in the network bandwidth. system, so that the network device can implement the total bandwidth measurement of the system bandwidth.
[00418] [00418] It should also be noted that, that T, shown in the figure exactly satisfies modl (Ni ,, + T,) ml = 0 is just an example. In fact, in this application, it is not specified that the value of T, satisfies modl (Ni ,, + T,) ml = 0, and the value of T7, can be determined by the network device based on each location of CSI- LOL.
[00419] [00419] Optionally, the indication information of the second displacement T, is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[00420] [00420] Optionally, the information of indication of the third displacement k is carried in upper layer signaling. The upper layer signaling can include, for example, a message or a MAC-CE.
[00421] [00421] It should be understood that the upper layer signaling to carry the indication information of the second offset 7, and the upper layer signaling to carry the indication information of the third offset k may be two different parts of the upper layer signaling, or they can be the same upper layer signaling part. This is not limited in this order.
[00422] [00422] It should also be understood that carrying the indication information for the second displacement 7, or the indication information for the third displacement k in the upper layer signaling is only a possible implementation, but should not constitute any limitation for this request.
[00423] [00423] In Way 1 and Way 2, the displacement of the pilot region can be indicated by the amount of RBs between the initial RB of the pilot region and the initial RB of the BWP.
[00424] [00424] In Way 3, the network device can directly indicate, for the terminal device, the RB number corresponding to the initial RB of the pilot region in the system bandwidth. The terminal device can determine a location of the initial RB of the pilot region in the
[00425] [00425] In other words, in Way 3, the displacement of the pilot region can be indicated by the amount of RBs between the initial RB of the pilot region and the initial RB of the system bandwidth.
[00426] [00426] For example, still referring to Figure 14, if an RB number corresponding to the initial RB of the pilot region of terminal device 41 in the system bandwidth is 12, the network device can indicate, for terminal device 41, that the pilot region's initial RB number in the system bandwidth is 12. Terminal device 41 can determine a pilot region's initial RB number in the BWP based on the pre-obtained Ni value, (e.g. Ni, , = 5 in the figure), that is, an amount of RBs between the initial RB of the pilot region and the initial RB of the BWP. Assuming an initial BWP RB number is O, an RB number corresponding to the initial RB of the pilot region in the BWP is 8.
[00427] [00427] Optionally, the indication information of the initial RB of the pilot region is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[00428] [00428] It should be understood that the transport of the indication information of the initial RB of the pilot region in the RRC message is only a possible implementation, but it should not constitute any limitation for this request. For example, the indication information of the initial RB of the pilot region can be carried alternatively in MAC-CE.
[00429] [00429] In the three previous ways, the terminal device can determine the displacement of the pilot region.
[00430] [00430] Optionally, method 2000 also includes: sending, through the network device, indication information of a size of the pilot region, where the indication information indicates transmission bandwidth occupied by the pilot region.
[00431] [00431] Optionally, the size of the pilot region can be indicated by a number of RBs.
[00432] [00432] Optionally, the information indicating the size of the pilot region is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[00433] [00433] It should be noted that the initial RB of the pilot region and the size of the pilot region can be indicated using indication information.
[00434] [00434] It should be understood that the upper layer signaling to carry the various types of indication information in Way 1 to Way 3 above and the upper layer signaling to carry the pilot region size indication information can be a plurality of different upper layer signaling parts, or can be the same upper layer signaling part. This is not limited in this order.
[00435] [00435] It should also be understood that carrying the information indicating the size of the pilot region in the upper layer signaling is only a possible implementation, but it should not constitute any limitation for this request.
[00436] [00436] Optionally, method 2000 also includes: sending, through the network device, information indicating a value of Nji ,,, where the information indicating a value of Ni,.
[00437] [00437] Optionally, the information of indication of Ni, Is carried in signaling of upper layer. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[00438] [00438] It should be understood that the upper layer signaling to carry the various types of indication information and the upper layer signaling to carry the N / A indication information can be a plurality of different layer signaling parts. top, or it can be the same upper layer signaling part. This is not limited in this order.
[00439] [00439] It should also be understood that carrying the Ni indication information, in the upper layer signaling is only a possible implementation, but it should not constitute any limitation for this request.
[00440] [00440] In steps 2200 and 2300, the network device and the terminal device can determine the displacement of the pilot region and then can determine, based on the displacement of the pilot region, the initial RB for transmitting the CSI-RS.
[00441] [00441] It should be understood that the above describes a specific method for determining the displacement of the pilot region with reference to the attached drawings. However, this should not be a limitation on this request. In some cases, the pilot region may have full BWP bandwidth. In this case, the displacement of the pilot region can be
[00442] [00442] It should also be understood that the above three ways are merely several possible implementations to determine the displacement of the pilot region, but should not constitute any limitation for this request.
[00443] [00443] Optionally, method 2000 also includes step 2400: The network device determines, based on the displacement of the pilot region, the initial RB for transmission of the CSI-RS.
[00444] [00444] Correspondingly, method 2000 also includes step 2500: The terminal device determines, based on the displacement of the pilot region, the initial RB for transmission of the CSI-RS.
[00445] [00445] In this modality of this request, the resource for transmission of the CSI-RS can be configured by the network device. The network device can determine, based on the size of the entire downlink system bandwidth, the location and BWP size of the terminal device by accessing the network device on the system bandwidth, and the location and the pilot region size of each terminal, a location for transmission of the CSI-RS. It should be understood that a specific method for determining, by the network device, the transmission of the CSI-RS may be the same as that of the prior art. For the sake of brevity, detailed descriptions of the specific process are omitted here.
[00446] [00446] After determining a transmission resource to transmit the CSI-RS, the network device can notify, using signaling, the terminal device of the initial location (for example, the initial RB) to transmit the CSI-RS, so that the terminal device receives the CSI-RS based on the initial location.
[00447] [00447] It should be understood that the network device and the terminal device can determine, based on a predefined pilot pattern (pattern), a resource element (Resource Element, RE) that is in an RB and that is used to transmit the CSI-RS. After the network device and the terminal device separately determine an RB to transmit the CSI-RS, the network device and the terminal device can determine, based on the predefined pilot pattern, an RE that carries the CSI-RS.
[00448] [00448] As described in step 2100, the transmission resources of the CSI-RS can be consecutive or non-consecutive in the pilot region (or in the BWP), and this can be configured specifically by the network device.
[00449] [00449] If the transmission resources of the CSI-RS are consecutive in the pilot region, the terminal device can directly determine, based on the displacement that is from the pilot region and that is determined in step 2300, the initial RB to transmit the CSI- RS and then receives the CSI-RS based on the initial RB determined to transmit the CSI-RS.
[00450] [00450] If the transmission resources of the CSI-RS are not consecutive in the pilot region, the network device may also indicate, for the terminal device, the location for transmission of the CSI-RS.
[00451] [00451] Optionally, method 2000 also includes: sending, through the network device, information indicating a CSI-RS location, where the indication information indicates an RB to transmit the CSI-RS in the pilot region.
[00452] [00452] Correspondingly, method 2000 also includes: receiving, by the terminal device, the information indicating the location of the CSI-RS from the network device, where the information indicating the RB to transmit the CSI-RS in the region pilot.
[00453] [00453] In a possible project, the information indicating the location of CSI-RS can be a bitmap. For example, the transmission bandwidth of a CSI-RS defined in a current standard can be an integer multiple of m RBs, for example, 4. Each group of RBs (including m RBs) in the pilot region corresponds to one bit. For example, when a group of RBs is used to transmit a CSI-RS, a corresponding bit can be set to "1"; when a group of RBs is not used to transmit a CSI-RS, a corresponding bit can be set to "O". It should be understood that the information indicated by a bit value can be predefined by the network device and the terminal device. The information indicated by setting the bit to "1" and the information indicated by setting the bit to "O" are shown only to facilitate understanding. However, this should not be a limitation on this request.
[00454] [00454] It should also be understood that a method for indicating, using the bitmap, the RB for transmission of the CSI-RS is only one possible implementation, but it should not constitute any limitation for this request. In this order, the terminal device can otherwise determine the RB for transmission of the CSI-RS. For example, preliminary definition of the network device agrees with the terminal device in advance that the transmission is performed on a group of odd-numbered RBs, but the transmission is not performed on a group of even-numbered RBs in the system bandwidth. This is not limited in this order.
[00455] [00455] Figure 15 is a schematic diagram of the system bandwidth, a pilot region and a BWP of a terminal device, and a bitmap according to an embodiment of this request. As shown in the figure, the BWP transmission bandwidth N; j of the terminal device is 26 RBs, and an N / N amount of RBs between an initial RB of the BWP and an initial RB of the system bandwidth is 5 The pilot region of the terminal device can be determined in the manner described above. For example, if k = 8, a resource size of the pilot region is 16 RBs, a location in the pilot region in the BWP can be determined. If a value of m is 4, the pilot region can include four groups of RBs, and each group of RBs corresponds to a bit. A correspondence between each bit and a group of RBs is shown in the figure. An RB to transmit a CSI-RS in the pilot region can be determined according to an indication of each bit in the bitmap. As shown in the figure, the network device transmits a CSI-RS only in a group of RBs corresponding to a bit defined as "1".
[00456] [00456] The system bandwidth or the transmission bandwidth of the BWP is not necessarily an integer multiple of m RBs. Therefore, some RBs may not be detected. To implement the total bandwidth measurement of the system bandwidth, the network device can configure the pilot region as the entire BWP, so that a CSI-RS can be transmitted at any location in the BWP as needed. In this case, the pilot region's bandwidth size is not necessarily an integer multiple of m RBs.
[00457] [00457] Figure 16 is another schematic diagram of the system bandwidth, a pilot region and a BWP of a terminal device, and a bitmap according to an embodiment of this request. As shown in the figure, the transmission bandwidth Nf; The BWP of the terminal device is 26 RBs, the bandwidth of the pilot region is also 26 RBs, and an N / N amount of RBs between an initial RB of the BWP and an initial RB of the system bandwidth is 5. If a value of a m number of RBs in a group of RBs is 4, the pilot region can include five groups of complete RBs, which can be indicated by five bits. However, neither the first three RBs nor the last three RBs in the pilot region can form a complete group of RBs, but the first three RBs and the last three RBs can still be considered as two groups of RBs, which can be nominated by two bits. In this case, it can be understood that two resource granularities are configured for the pilot region, one resource granularity is m RBs, and the other resource granularity is at least one RB less than m RBs. A correspondence between each bit and a group of RBs is shown in the figure. An RB for transmitting a CSI-RS in the pilot region can be determined according to an indication of each bit in the bitmap. As shown in the figure, the network device transmits a CSI-RS only in a group of RBs corresponding to a bit defined as "1". In addition, resource scaling flexibility can be further enhanced by configuring different resource granularities.
[00458] [00458] Optionally, information indicating a reference signal location is carried in upper layer signaling. The upper layer signaling can include, for example, an RRC message or a MAC-CE.
[00459] [00459] It should be understood that the signaling to carry the information indicating the location of the reference signal here is only an example for description, but should not constitute any limitation for this request. For example, information indicating the location of the reference signal can be carried alternatively in MAC-CE.
[00460] [00460] Based on the previous technical solution, in this modality of this request, an initial RB to receive the CSI-RS by the terminal device is determined based on the BWP of the terminal device in NR, and the CSI-RS is transmitted based on the RB initial, so that the terminal device can receive the CSI-RS from the network device based on a location and BWP size of the terminal device. Thus, this order is more suitable for an NR scenario.
[00461] [00461] In addition, the displacement of the pilot region is indicated to indicate, within a range of resources of the pilot region, if each group of RBs carries a CSI-RS. Therefore, a location of a resource for transmitting a CSI-RS need not be indicated in the total bandwidth of the system bandwidth, thus reducing signaling overloads. In addition, the displacement of the pilot region is limited, so an issue that the channel measurement accuracy of the terminal device is reduced because the transmission capabilities of the CSI-RS exceeds the BWP range can be avoided, thereby improving performance demodulation. It should be understood that, in the previous modalities, a RB is used as an example of a resource unit to describe each modality. For a definition of RB, see a definition of RB in a current LTE protocol or see a definition of RB in a future 5G protocol. In addition, this request does not exclude the possibility that another resource unit will be used to replace RB in a future protocol.
[00462] [00462] It should also be understood that the previous "preset" can be implemented in a way in which the corresponding code, a table, or other related indication information can be pre-stored on a device (for example, including the terminal device and the network device). A specific implementation of the previous "template" is not limited in this order.
[00463] [00463] It should also be understood that, just to facilitate understanding, the foregoing describes in detail the technical solutions provided in this application with reference to the attached drawings and different sizes of bandwidth. However, this should not be a limitation on this request. The sizes of the system bandwidth, the BWP bandwidth, the polling region and the pilot region are not limited in this order.
[00464] [00464] In another implementation, the network device and the terminal device can communicate with each other based on multiple antenna technology.
[00465] [00465] In LTE, a 172R user's antenna switching (1T2R) is supported. Switching a user's antenna with the Tx (transmit) antennas and b Rx (receive) antennas is further supported below using an antenna array method, where a> loub> 2, and a <b.
[00466] [00466] Step 1: A base station sends SRS configuration information to a user. The number of antenna ports indicated by the antenna port information need not be greater than the number of antennas that can be used simultaneously for the uplink transmission by the user. Therefore, the user needs to report, in a message 3 (Msg3) or upper layer signaling, such as RRC signaling, a maximum number of antennas that can be used simultaneously for sending. In this mode, a number of ports is a = 2.
[00467] [00467] Step 2: The base station sends signaling to the user, where signaling is used to instruct the user to send an SRS in an SRS antenna switching manner. Optionally, the base station notifies a total number of antennas used by the user. For example, in this mode, the total number of antennas is b = 4, and indicates that the user performs the sending once using two antennas, and sends an SRS on a total of four antennas.
[00468] [00468] Step 3: The user sends an SRS on four antennas through time division based on the configuration information of the base station. Specifically, the antennas used are grouped into b / a = 2 groups, where the antennas included in each group are predefined or configured by the base station. For example, a group O includes antennas 10, 1) and a group 1 includes antennas (2, 3). Predefined antennas in a group are antennas that can be used simultaneously for uplink transmission. An antenna group identifier can be indicated as single), and n &, is determined based on the number of times the uplink reference signal is sent. For example, n ,, is the number of times the reference signal is sent or is obtained by subtracting 1 from the number of times the reference signal is sent. When the frequency jump is not performed, ulnç.) = N ,, mod2. When the frequency jump is performed, the following Formula is satisfied: 2 [(frs + | 1525/2) + B- | ng5 / K |)] Mmod2 seKis an even number Als) | 1.25 mod 2 if K is an odd number ', where 6- f1 if Kmod4 = 0 lo otherwise:
[00469] [00469] K is a total number of hops in the frequency hop. Here, a frequency hopping scenario with K = 2 is used as an example. The following table provides a relationship between an antenna port, number of transmission times, and transmission bandwidth.
[00470] [00470] It can be learned that, during the first moment of transmission, the user sends an SRS using antennas O and 1 in a first frequency hop location; during the second moment of transmission, theThe user sends an SRS using antennas 2 and 3 in a second frequency hop location; during the third transmission moment, the user sends an SRS using antennas 2 and 3 at the first frequency hop location; during the fourth transmission time, the user sends an SRS using antennas O and 1 at the second frequency hop location.
[00471] [00471] The foregoing describes in detail the method provided in the modalities of this application with reference to Figure 2 to Figure 16. Next, a network device and a terminal device provided in the modalities of this application with reference to Figure 17 a are described in detail. Figure
[00472] [00472] Figure 17 is a schematic block diagram of a terminal device 400 according to an embodiment of this application. As shown in Figure 17, terminal device 400 includes a determination module 410 and a transceiver module 420.
[00473] [00473] The determination module 410 is configured to determine, based on an offset, an initial subcarrier location to transmit an SRS, where the offset is a resource offset between an initial subcarrier of a drilling region and a subcarrier initial transmission bandwidth of a BWP bandwidth portion of the terminal device, and the offset is determined based on a predefined resource configuration mode.
[00474] [00474] The transceiver module 420 is configured to send the SRS based on the location, determined by the determination module 410, of the initial subcarrier to transmit the SRS.
[00475] [00475] Therefore, in this modality of this request, the location of the initial subcarrier to transmit the SRS by the terminal device is determined based on the BWP of the terminal device in NR, and the SRS is transmitted based on the location of the initial subcarrier, so that a resource that is configured for each terminal device to transmit an SRS is specific to user equipment (user equipment, UE), and the resource for transmitting the SRS can be configured based on the transmission or reception capacity of each terminal device and one requirement for the measured bandwidth. Thus, this order is more suitable for an NR scenario. In addition, an interval type is not limited in the method for determining the location of the initial subcarrier for transmitting the SRS provided in this embodiment of this request.
[00476] [00476] Optionally, the predefined resource configuration mode is determined from a plurality of predefined resource configuration modes, and the plurality of predefined resource configuration modes corresponds to a plurality of offsets.
[00477] [00477] Optionally, terminal device 400 also includes a retrieval module, configured to obtain an index value of the predefined resource configuration mode, where the index value is used to indicate the predefined resource configuration mode, and the plurality of predefined resource configuration modes are in a one-to-one correspondence with a plurality of index values.
[00478] [00478] Optionally, the transceiver module 420 is further configured to receive the first information, where the first information includes the Index value of the predefined resource configuration mode.
[00479] [00479] Optionally, determination module 410 is further configured to determine the index value of the predefined resource configuration mode based on any of a system frame number, interval number or combined mapping location.
[00480] [00480] Optionally, the plurality of resource configuration modes is in a one-to-one correspondence with a plurality of formulas, each formula is used to determine an offset, and the plurality of formulas includes: Formula 1: KR = (NH MssÔ [11N,) NE +; and Formula 2: k = kM .
[00481] [00481] k "indicates the offset, Ni indicates a number of blocks of RBs resources included in the BWP transmission bandwidth of the terminal device, | indicates rounding down, ms. &., indicates a number of RBs used by the terminal device to transmit an SRS once, B. ,, is an EU user equipment specific SRS bandwidth configuration parameter, each By , indicates a set of parameters m .., and N ,, b = Ba; , b is an integer, N, indicates the number of times required to send an SRS through the terminal device for measured bandwidth of m .. ,,, b 'is a value obtained when crossing [0, bl, No. indicates an amount of subcarriers included in each RB, and Kk / is used to determine a combined mapping location.
[00482] [00482] Optionally, the plurality of resource configuration modes is in a one-to-one correspondence with a plurality of formulas, each formula is used to determine an offset, and the plurality of formulas includes: Formula 1: KM = (N but []>, N, NE +02; Formula 2: Ki = k; and Formula 3: RM = ([NE / 2 | = mssa [1,2N, / 2NE +,
[00483] [00483] kW ”indicates the offset, Nr indicates a number of blocks of RBs resources included in the BWP transmission bandwidth of the terminal device, | indicates rounding down, m .., indicates a number of RBs used by the terminal device to transmit an SRS once, B. ,, is an EU user equipment specific SRS bandwidth configuration parameter, each B. , indicates a set of parameters m .., and N ,, b = Bs, s, b is an integer, N, indicates the number of times required to send an SRS through the terminal device for measured bandwidth of m .., . ,, b 'is a value obtained when crossing [0, b], NX indicates a number of subcarriers included in each RB, and Kk / is used to determine a combined mapping location.
[00484] [00484] Optionally, the displacement is determined according to the following Formula: ki ”= (| NE / 2 | ma []», N, / 2NE +02.
[00485] [00485] It should be understood that the terminal device 400 can correspond to the terminal device in the method of sending and receiving the reference signal 200 in the modalities of this application. Terminal device 400 may include modules for carrying out the method performed by the terminal device on the reference signal sending and receiving method 200 in Figure 2. The modules on terminal device 400 and the other previous operations and / or functions are used separately to implement the corresponding procedures of the sending and receiving reference signal method 200 in Figure 2. Specifically, the determination module 410 is configured to perform steps 210, 240 and 2602 in method 200, and the transceiver module 420 is configured to perform the steps 230 and 2601 in method 200. A specific process of carrying out the previous corresponding step of each module is described in detail in method 200. For the sake of brevity, the details are not described here again.
[00486] [00486] Alternatively, the terminal device 400 can correspond to the terminal device in the method of sending and receiving the reference signal 300 in the modalities of this application. Terminal device 400 may include modules to perform the method performed by the terminal device on the reference signal sending and receiving method 300 in Figure 6. The modules on terminal device 400 and the other operations and / or previous functions are used separately to implement the corresponding procedures of the reference signal sending and receiving method 300 in Figure 6. Specifically, the determination module 410 is configured to perform steps 310 and 330 in method 300, and the transceiver module 420 is configured to perform step 350 in method 300. A specific process for performing the previous corresponding step for each module is described in detail in method 300. For the sake of brevity, the details are not described here again.
[00487] [00487] Alternatively, the terminal device 400 can correspond to the terminal device in the method of sending and receiving the reference signal 1000 in the modalities of this request. Terminal device 400 may include modules for carrying out the method performed by the terminal device on the reference signal sending and receiving method 1000 in Figure 7. The modules on terminal device 400 and the other previous operations and / or functions are used separately to implement the corresponding procedures of the reference signal sending and receiving method 1000 in Figure 7. Specifically, the determination module 410 is configured to perform steps 1200 and 1400 in method 1000, and the transceiver module 420 is configured to perform step 1100 in method 1000. A specific process for carrying out the corresponding previous step for each module is described in detail in method 1000. For the sake of brevity, the details are not described here again.
[00488] [00488] Alternatively, the terminal device 400 can correspond to the terminal device in the method of sending and receiving reference signal 2000 in the modalities of this application. Terminal device 400 may include modules to perform the method performed by the terminal device in the reference signal sending and receiving method 2000 in Figure 12. The modules in terminal device 400 and the other operations and / or previous functions are used separately to implement the corresponding procedures of the reference signal sending and receiving method 2000 in Figure
[00489] [00489] Figure 18 is a schematic structural diagram of a terminal device 500 according to an embodiment of this application. As shown in Figure 18, terminal device 500 includes a processor 501 and a transceiver 502. Optionally, terminal device 500 also includes a memory 503. Processor 501, transceiver 502 and memory 503 communicate via a connection channel internal to transmit a control signal and / or a data signal. Memory 503 is configured to store a computer program. The processor 501 is configured to call the computer program from memory 503 and run the computer program to control transceiver 502 to receive and send a signal.
[00490] [00490] Processor 501 and memory 503 can be integrated into a processing apparatus, and processor 501 is configured to execute the program code stored in memory 503, to implement the previous function. In a specific implementation, memory 503 can be integrated with processor 501 or it can be independent of processor 501. The terminal device 500 can also include an antenna 504, configured to send, using a radio signal, uplink data or signaling from uplink control emitted by transceiver 502.
[00491] [00491] Specifically, the terminal device 500 can correspond to the terminal device in the method of sending and receiving the reference signal 200 in the modalities of this application. The terminal device 500 may include modules for carrying out the method performed by the terminal device in the reference signal sending and receiving method 200 in Figure 2. The modules in the terminal device 500 and the other previous operations and / or functions are used separately to implement the corresponding procedures of the reference signal sending and receiving method 200 in Figure 3. Specifically, memory 503 is configured to store the program code, so that when executing the program code, processor 501 performs steps 210 , 240 and 2602 in method 200, and controls transceiver 502 to perform steps 230 and step 2601 in method 200. A specific process for performing the previous corresponding step for each module is described in detail in method
[00492] [00492] Alternatively, the terminal device 500 can correspond to the terminal device in the method of sending and receiving the reference signal 300 in the modalities of this application. The terminal device 500 may include modules to perform the method performed by the terminal device in the reference signal sending and receiving method 300 in Figure 6. The modules in the terminal device 500 and the other operations and / or previous functions are used separately to implement the corresponding procedures of the reference signal sending and receiving method 300 in Figure 6. Specifically, memory 503 is configured to store the program code, so that when executing the program code, processor 501 performs steps 310 and 330 in method 300, and controls transceiver 502 to perform step 350 in method 300. A specific process for performing the corresponding previous step for each module is described in detail in method 300. For the sake of brevity, details are not described here again.
[00493] [00493] Alternatively, the terminal device 500 may correspond to the terminal device in the method of sending and receiving the reference signal 1000 in the modalities of this request. The terminal device 500 can include modules to perform the method performed by the terminal device in the reference signal sending and receiving method 1000 in Figure 7. The modules in the terminal device 500 and the other previous operations and / or functions are used separately to implement the corresponding procedures of the sending and receiving reference signal method 1000 in Figure 7. Specifically, memory 503 is configured to store the program code, so that when executing the program code, processor 501 performs steps 1200 and 1400 in method 1000, and controls transceiver 502 to perform step 1100 in method 1000. A specific process for performing the corresponding previous step for each module is described in detail in method 1000. For the sake of brevity, details are not described here again.
[00494] [00494] Alternatively, the terminal device 500 can correspond to the terminal device in the method of sending and receiving reference signal 2000 in the modalities of this application. The terminal device 500 can include modules to perform the method performed by the terminal device in the reference signal sending and receiving method 2000 in Figure 12. The modules in the terminal device 500 and the other operations and / or previous functions are used separately to implement the corresponding procedures of the reference signal sending and receiving method 2000 in Figure
[00495] [00495] Processor 501 can be configured to perform an action implemented internally by the terminal in the previous method mode, and transceiver 502 can be configured to perform an action of transmitting or sending signals through the terminal in the previous method mode to a device network. For details, see the description of the previous method modality. The details are not described here again.
[00496] [00496] Processor 501 and memory 503 can be integrated into a processing apparatus, and processor 501 is configured to execute the program code stored in memory 503, to implement the previous function. In a specific implementation, memory 503 can be integrated with processor 501.
[00497] [00497] The terminal device 500 can also include a power source 505, configured to supply power to various components or circuits in the terminal.
[00498] [00498] In addition, terminal device 500 may include one or more of an input unit 506, a display unit 507, an audio circuit 508, a camera
[00499] [00499] Figure 19 is a schematic block diagram of a network device 600 according to an embodiment of this request. As shown in Figure 19, network device 600 includes a determination module 610 and a transceiver module 620.
[00500] [00500] The determination module 610 is configured to determine, based on a displacement, a location of an initial subcarrier to transmit an SRS, where the displacement is a resource displacement between an initial subcarrier of a drilling region and a subcarrier initial BWP transmission bandwidth of a terminal device, and the offset is determined based on a predefined resource configuration mode.
[00501] [00501] The transceiver module 620 is configured to receive the SRS from the terminal device based on the location, determined by the determination module 610, of the initial subcarrier to transmit the SRS.
[00502] [00502] Therefore, in this embodiment of this request, the location of the initial subcarrier for transmitting the SRS by the terminal device is determined based on the BWP of the terminal device in NR, and the SRS is transmitted based on the location of the initial subcarrier, so that a resource that is configured for each terminal device to transmit an SRS is specific to user equipment (UE), and the resource to transmit the
[00503] [00503] Optionally, the predefined resource configuration mode is determined from a plurality of predefined resource configuration modes, and the plurality of predefined resource configuration modes corresponds to a plurality of different offsets.
[00504] [00504] Optionally, determination module 610 is further configured to determine an Index value of the predefined resource configuration mode based on any of a system frame number, interval number or combined mapping location, where the index value is used to indicate the predefined resource configuration mode, and the plurality of predefined resource configuration modes are in one-to-one correspondence with a plurality of index values.
[00505] [00505] Optionally, the transceiver module 620 is further configured to send the first information, where the first information includes an index value of the predefined resource configuration mode.
[00506] [00506] Optionally, the plurality of resource configuration modes is in a one-to-one correspondence with a plurality of formulas, each formula is used to determine an offset, and the plurality of formulas includes:
[00507] [00507] ki ”indicates the offset, Ni indicates a number of blocks of RBs resources included in the BWP transmission bandwidth of the terminal device, | indicates rounding down, ms .., indicates a number of RBs used by the terminal device to transmit an SRS once, B. ,, is an EU user equipment specific SRS bandwidth configuration parameter, each By, indicates a set of parameters m.,., and N ,, b = Ba; , b is an integer, N, indicates the number of times required to send an SRS through the terminal device to measure the bandwidth m .. ,,, b 'is a value obtained when crossing [0, bl], NE indicates a number of subcarriers included in each RB, ek / is used to determine a combined mapping location.
[00508] [00508] Optionally, the plurality of resource configuration modes is in a one-to-one correspondence with a plurality of formulas, each formula is used to determine an offset, and the plurality of formulas includes: Formula 1: RM ( NL but [1 QN, NE +; Formula 2: kKP ”= kP; and Formula 3: RM = ([NE / 2 | but [] 1,2N, / 2NE +00,
[00509] [00509] ki ”indicates the offset, Ni indicates a number of blocks of RBs resources included in the BWP transmission bandwidth of the terminal device, | indicates rounding down, m .., indicates a number of RBs used by the terminal device to transmit an SRS once, B. ,, is a SRS bandwidth configuration parameter specific to EU user equipment, each By, indicates a set of parameters m .., and N ,, b = Bs; , b is an integer, N, indicates the number of times required to send an SRS through the terminal device to measure the bandwidth ms ...., b 'is a value obtained when crossing [0, bl], No. indicates a number of subcarriers included in each RB, and Kk is used to determine a combined mapping location.
[00510] [00510] Optionally, the displacement is determined according to the following Formula: Ki = (| NE / 2 [ms [1, QN, / 2NH +
[00511] [00511] It should be understood that the network device 600 can correspond to the network device in the method of sending and receiving reference signal 200 in the modalities of this application. The network device 600 can include modules to perform the method performed by the network device on the reference signal sending and receiving method 200 in Figure 2. The modules on the network device 600 and the other previous operations and / or functions are used separately to implement the corresponding procedures for the sending and receiving reference signal method 200 in Figure 3. Specifically, the determination module 610 is configured to perform steps 220, 250 and 270 in method 200, and the transceiver module 620 is configured to perform step 230 in method 200. A specific process for performing the corresponding previous step for each module is described in detail in method 200. For the sake of brevity, the details are not described here again.
[00512] [00512] Alternatively, the network device 600 may correspond to the network device in the method of sending and receiving the reference signal 300 in the modalities of this request. The network device 600 can include modules to perform the method performed by the network device on the reference signal sending and receiving method 300 in Figure 6. The modules on the network device 600 and the other previous operations and / or functions are used separately to implement the corresponding procedures of the sending and receiving reference signal method 300 in Figure 6. Specifically, the determination module 610 is configured to perform steps 320 and 340 in method 300, and the transceiver module 620 is configured to perform step 350 in method 300. A specific process for performing the previous corresponding step for each module is described in detail in method 300. For the sake of brevity, the details are not described here again.
[00513] [00513] Alternatively, the network device 600 may correspond to the network device in the method of sending and receiving the reference signal 1000 in the modalities of this request. The network device 600 can include modules to perform the method performed by the network device on the reference signal 1000 sending and receiving method in Figure 7. The modules on the network device 600 and the other previous operations and / or functions are used separately to implement the corresponding procedures for sending and receiving reference signal 1000 in Figure 7. Specifically, determination module 610 is configured to perform steps 1300 and 1500 in method 1000, and transceiver module 620 is configured to perform step 1100 in method 1000. A specific process for carrying out the corresponding previous step for each module is described in detail in method 1000. For the sake of brevity, the details are not described here again.
[00514] [00514] Alternatively, the network device 600 may correspond to the network device in the method of sending and receiving reference signal 2000 in the modalities of this request. The network device 600 may include modules to perform the method performed by the network device in the reference signal sending and receiving method 2000 in Figure 12. The modules in the network device 600 and the other previous operations and / or functions are used separately to implement the corresponding procedures for sending and receiving reference signal 2000 in Figure
[00515] [00515] Figure 20 is a schematic structural diagram of a network device 700 according to an embodiment of this application. As shown in Figure 20, the network device 700 includes a processor 710 and a transceiver 720. Optionally, the network device 700 also includes a memory 730. Processor 710, transceiver 720 and memory 730 communicate via a channel internal connection cable for transmitting a control signal and / or a data signal. Memory 730 is configured to store a computer program. The processor 710 is configured to call the computer program from memory 730 and run the computer program to control transceiver 720 to receive and send a signal.
[00516] [00516] Processor 710 and memory 730 can be integrated into a processing device, and processor 710 is configured to execute the program code stored in memory 730, to implement the previous function. In specific implementation, memory 730 can be integrated with processor 710 or it can be independent of processor 710.
[00517] [00517] The network device may also include an antenna 740, configured to send, using a radio signal, uplink data or uplink control signaling emitted by transceiver 720.
[00518] [00518] Specifically, the network device 700 can correspond to the network device in the method of sending and receiving the reference signal 200 in the modalities of this request. The network device 700 can include modules to perform the method performed by the network device on the reference signal sending and receiving method 200 in Figure 2. The modules on the network device 700 and the other previous operations and / or functions are used separately to implement the corresponding procedures for sending and receiving reference signal 200 in Figure 2. Specifically, memory 730 is configured to store the program code, so that when executing the program code, processor 710 performs steps 220, 250 and 270 of method 200, and controls transceiver 720 to perform step 230 on method 200 using antenna 740. A specific process for performing the previous corresponding step for each module is described in detail in method 200. For For the sake of brevity, the details are not described here again.
[00519] [00519] Alternatively, the network device 700 can correspond to the network device in the method of sending and receiving the reference signal 300 in the modalities of this request. The network device 700 can include modules to perform the method performed by the network device on the reference signal sending and receiving method 300 in Figure 6. The modules on the network device 700 and the other previous operations and / or functions are used separately to implement the corresponding procedures for the sending and receiving reference signal method 300 in Figure 6. Specifically, memory 730 is configured to store the program code, so that when executing the program code, processor 710 performs steps 320 and 340 in method 300, and controls transceiver 720 to perform step 350 in method 300 by using antenna 740. A specific process for performing the previous corresponding step for each module is described in detail in the method. For the sake of brevity, the details are not described here again.
[00520] [00520] Alternatively, the network device 700 can correspond to the network device in the method of sending and receiving reference signal 1000 in the modalities of this request. The network device 700 can include modules to perform the method performed by the network device on the reference signal 1000 sending and receiving method in Figure 7. The modules on the network device 700 and the other previous operations and / or functions are used separately to implement the corresponding procedures for sending and receiving reference signal 1000 in Figure 7.
[00521] [00521] Alternatively, the network device 700 can correspond to the network device in the method of sending and receiving reference signal 2000 in the modalities of this request. The network device 700 can include modules to perform the method performed by the network device in the reference signal sending and receiving method 2000 in Figure 12. The modules in the network device 700 and the other previous operations and / or functions are used separately to implement the corresponding procedures for sending and receiving reference signal 2000 in Figure
[00522] [00522] According to the method provided in the modalities of this application, an embodiment of this application also provides a system, and the system includes the previous network device and one or more terminal devices.
[00523] [00523] It should be understood that, the processor in the modalities of this request may be a central processing unit (CPU), or the processor may be another general purpose processor, a digital signal processor, DSP), an application-specific integrated circuit (ASIC), an array of field programmable gates (Field Programmable Gate Array, FPGA) or other programmable logic device, a discrete gate or a transistor logic device, a discrete hardware component or the like. The general purpose processor can be a microprocessor, or the processor can be any conventional or similar processor.
[00524] [00524] It should also be understood that the memory in the modalities of this application can be a volatile memory or a non-volatile memory, or it can include a volatile memory and a non-volatile memory. Non-volatile memory can be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), a memory only programmable readout electrically erasable (electrically EPROM, EEPROM) or a flash memory. Volatile memory can be a random access memory (RAM) and is used as an external cache. By way of examples, but not of limiting description, many forms of random access memory (RAM) can be used, for example, a static random memory (Static RAM, SRAM), a random access memory dynamic (DRAM),
[00525] [00525] All or some of the previous modalities can be implemented by software, hardware, firmware or any combination thereof. When software is used to implement the modalities, the previous modalities can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When computer program instructions are loaded and executed on a computer, the procedures or functions in the modalities of this order are all or partially generated. The computer can be a general purpose computer, a dedicated computer, a computer network, or other programmable device. Computer instructions can be stored on a computer-readable storage medium or they can be transmitted from a computer-readable storage medium to another computer-readable storage medium. For example, computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center in a wired manner (for example, infrared, radio or microwave). The computer-readable storage medium can be any usable medium accessible by the computer or a data storage device, such as a server or a data center, integrating one or more usable media. The usable medium can be a magnetic medium (for example, a floppy disk, a hard disk or a magnetic tape), an optical medium (for example, a DVD) or a semiconductor medium. The semiconductor medium can be a solid state unit.
[00526] [00526] A person skilled in the art may be aware that, in combination with the examples described in the modalities disclosed in this specification, units and algorithm steps can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed by hardware or software depends on particular applications and design restrictions of the technical solutions. A person skilled in the art may use different methods to implement the functions described for each particular application, but implementation should not be considered to be beyond the scope of that request.
[00527] [00527] It can be clearly understood by a person skilled in the art that, for the purposes of a convenient and brief description, for a detailed work process of the previous system, apparatus and unit, consult a corresponding process in the previous method modality. The details are not described here again.
[00528] [00528] In the various modalities provided in this application, it should be understood that the system, apparatus and method disclosed can be implemented in other ways. For example, the type of apparatus described is merely an example. For example, the unit division is merely a logical function division and can be another division in the actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not realized. In addition, the mutual couplings, direct couplings or communication connections displayed or discussed can be implemented through some interfaces. Indirect couplings or communication connections between devices or units can be implemented in electronic, mechanical or other forms.
[00529] [00529] The units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one position or may be distributed in a plurality of network units. Some or all of the units can be selected based on actual requirements to achieve the objectives of the modalities solutions.
[00530] [00530] In addition, the functional units in the modalities of this order can be integrated into a processing unit, or each of the units can exist physically alone, or two or more units are integrated into one unit.
[00531] [00531] When functions are implemented in the form of a functional software unit and sold or used as a standalone product, the functions can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions in this application essentially, or the part that contributes to the state of the art, or some of the technical solutions, can be implemented in the form of a software product. The computer software product is stored on a storage medium and includes several instructions for instructing a computer device (which may be a personal computer, a server, a network device or the like) to perform all or some of the method steps described in the modalities of this application. The previous storage medium includes: any medium that can store program code, such as a USB flash drive, a removable hard drive, a read-only memory (ROM), a random access memory , RAM), a magnetic disk or an optical disk.
[00532] [00532] The previous descriptions are only specific implementations of this application, but are not intended to limit the scope of protection of this application. Any variation or substitution promptly identified by a person skilled in the art within the technical scope disclosed in this order must be within the scope of protection of this order. Therefore, the scope of protection of this claim must be subject to the scope of protection of the claims.

权利要求:
Claims (37)
[1]
1. Reference signal sending method, characterized by the fact that it comprises: sending, through a terminal device, a polling reference signal (SRS) based on an initial subcarrier location to transmit the SRS, in which the location of the initial subcarrier to transmit the SRS is determined by an offset from a polling region, the offset from the polling region indicates a resource offset between an initial subcarrier of the polling region and an initial subcarrier of a portion of BWP bandwidth of the terminal device, and the polling region is a resource that is used to transmit the SRS.
[2]
2. Method, according to claim 1, characterized by the fact that the displacement of the survey region satisfies: KM = kPNE + k , where k "indicates the displacement of the survey region, Nº indicates that a number of subcarriers comprised in each RB resource block, ki "is used to determine a combined mapping location, ek” indicates an amount of RBs between an RB in which the initial subcarrier of the polling region is located and an initial RB of the bandwidth BWP broadcast, where k '”" belongs to [0, NI — NS], kP is an integer, Ni; indicates a number of RBs included in the BWP transmission bandwidth of the terminal device, NX indicates a number of RBs included in the polling region, ek ”satisfies mod [l (k” + Ni ,,) nl = A, where mod indicates a module operation, Nx, indicates a number of RBs between the initial RB of the BWP transmission bandwidth and an initial RB of the system bandwidth, A belongs to [0, n-— 11, and A it's an integer.
[3]
3. Method, according to claim 2, characterized by the fact that the method further comprises: receiving, through the terminal device, information indicating a value of k ”, in which information indicating a value of k!” indicates a value of k ””.
[4]
4. Method, according to claim 1, characterized by the fact that the displacement of the sounding region satisfies: ki ”= (nk" + K,) N & + k, where ki "indicates the displacement of the sounding region, No. indicates a number of subcarriers included in each RB, ki Is used to determine a combined mapping location, and nk ”+ K, indicates a number of RBs between a RB in which the initial subcarrier of the drilling region is located and a Initial RB of the BWP bandwidth, where K, is any value in [0, n-1], k ”is any value in [0, | (NK-NS-K, / n |] l, and both K, ek ”are whole numbers.
[5]
5. Method, according to claim 4, characterized by the fact that the method further comprises: receiving, through the terminal device, information indicating a value of k ”, in which information indicating a value of k” indicates a value of k ”; and receiving, by the terminal device, information indicating a value of K ,, wherein the information indicating a value of K indicates a value of K ,.
[6]
6. Reference signal reception method, characterized by the fact that it comprises: receiving, by a network device, a polling reference signal (SRS) from a terminal device based on the location of an initial subcarrier to transmit the SRS , where the location of the initial subcarrier for transmitting the SRS is determined by a displacement of a polling region, the displacement of the polling region indicates a resource displacement between an initial subcarrier of the polling region and an initial subcarrier of a part of BWP bandwidth of the terminal device, and the polling region is a resource that is used to transmit the SRS.
[7]
7. Method, according to claim 6, characterized by the fact that the displacement of the drilling region satisfies: KM = kPNE + k , where ki ”indicates the displacement, NX indicates that a number of subcarriers included in each RB , k is used to determine a combined mapping location, ek ”indicates a number of RBs between an RB in which the initial subcarrier of the polling region is located and an initial BWP transmission bandwidth RB, where k (” is any value in [0, NI! NS], k "is an integer, Nif indicates a number of RBs comprised in the BWP transmission bandwidth of the terminal device, No. indicates a number of RBs comprised in the polling region, ek ”” Satisfies modl (k ”+ Ni ,,) nl = A, where mod indicates a module operation, Nr, indicates an amount of RBs between the initial RB of the terminal device's BWP and an initial RB of the bandwidth of system, A belongs to [0, n-1], and A is an integer.
[8]
8. Method, according to claim 7, characterized by the fact that the method further comprises:
send, by the network device, information indicating a value of k ”, where information indicating a value of k” ”” indicates a value of k ””.
[9]
9. Method, according to claim 6, characterized by the fact that the displacement of the survey region satisfies: KI ”= (nk" ”+ K,) N + k, where k” indicates the displacement of the survey region , No. indicates a number of subcarriers included in each RB, ki Is used to determine a combined mapping location, and nk ”+ K, indicates a number of RBs between an RB in which the initial subcarrier of the drilling region is located and an initial RB of the BWP bandwidth, where K, is any value in [0, n-1], k ”is any value in [0, | (NK-NS-K, / n] l, and both K, ek ”are whole numbers.
[10]
10. Method, according to claim O, characterized by the fact that the method also comprises: sending, through the network device, information indicating a value of k ”, in which information indicating a value of k” indicates a value of k ”; and sending, through the network device, information indicating a value of K ,, wherein the information indicating a value of K indicates a value of K ,.
[11]
11. Reference signal sending method characterized by the fact that it comprises: sending, through a network device, a channel status information reference signal (CSI-RS) based on an initial location of the frequency domain a resource for transmitting the CSI-RS, where the initial domain location of the frequency of the resource for transmitting the CSI-RS is determined by a displacement of a pilot region, the displacement of the pilot region indicates a displacement of resource between a block of resources initial RB of the pilot region and an initial RB of a portion of the BWP bandwidth of a terminal device, or the offset of the pilot region indicates a resource offset between an initial RB of the pilot region and an initial RB of the bandwidth of system, and the pilot region is a resource that is used to transmit the CSI-RS.
[12]
12. Method, according to claim 11, characterized by the fact that the method further comprises: sending, by the network device, information indicating the first displacement k, in which the information indicating the first displacement k, indicates a value of k., & the first offset k, indicates an amount of RBs between the initial RB of the pilot region and the initial RB of the BWP.
[13]
13. Method, according to claim 11, characterized by the fact that the method further comprises: sending, through the network device, information indicating a second displacement T, in which the information indicating the second displacement T, indicates a Ti value; and sending, through the network device, indication information of a third displacement k ,, where the indication information of the third displacement k, indicates a value of k, where the second displacement T, indicates a number of RBs between an RB initial of a mappable location in the pilot region and the initial BWP RB, and the third k offset, is used to indicate an amount of RBs between an initial RB of a pilot region mapping location and the initial RB of the mapped location in the region pilot.
[14]
14. Method, according to claim 11, characterized by the fact that the method further comprises: sending, through the network device, information indicating the initial location of the pilot region, where the information indicating the initial location indicates a RB number corresponding to an initial RB to transmit the reference signal in the system bandwidth.
[15]
15. Method, according to claim 11 or 14, characterized by the fact that the initial location of the frequency domain of the resource to transmit the CSI-RS is within the BWP.
[16]
16. Method according to claim 15, characterized by the fact that the initial RB of the BWP is different from the initial RB of the system bandwidth.
[17]
17. Method according to any one of claims 11, 14 to 16, characterized by the fact that the initial RB of the pilot region is an initial RB of the BWP of the terminal device.
[18]
18. Method according to any one of claims 11 to 17, characterized by the fact that the method further comprises: sending, through the network device, information indicating a reference signal location, in which information indicating the reference signal location indicates an RB to transmit the CSI-RS in the pilot region.
[19]
19. Method, according to claim 18,
characterized by the fact that the indication information of the reference signal location is a bitmap, the bitmap comprises at least one indication bit, each indication bit is used to indicate whether a group of RBs is used to transmit the CSI-RS, and the group of RBs comprises at least one RB.
[20]
20. Reference signal reception method, characterized by the fact that it comprises: receiving, by a terminal device, a channel status information reference signal (CSI-RS) based on an initial location of the frequency domain a resource for transmitting the CSI-RS, where the initial domain location of the frequency of the resource for transmitting the CSI-RS is determined by a displacement of a pilot region, the displacement of the pilot region indicates a displacement of resource between a block of pilot region initial RB resources and a terminal device's initial RB portion of the BWP bandwidth, or the pilot region offset indicates a resource offset between a pilot region initial RB and a system bandwidth initial RB , and the pilot region is a resource that can be used to transmit CSI-RS.
[21]
21. Method, according to claim 20, characterized by the fact that the method further comprises: receiving, by the terminal device, information indicating the first displacement k, in which the information indicating the first displacement k, indicates a value of k., & the first offset k, indicates an amount of RBs between the initial RB of the pilot region and the initial RB of the BWP.
[22]
22. Method, according to claim 20, characterized by the fact that the method further comprises: receiving, by the terminal device, indication information of a second displacement T, in which the indication information of the second displacement T, indicates a value of T, j and receive, by the terminal device, information indicating a third displacement k ,, where the indication information of the third displacement k indicates a value of k, where the second displacement T, indicates a number of RBs between an initial RB from a mappable location in the pilot region and the initial RB from BWP, and the third k offset is used to indicate an amount of RBs between an initial RB from a mapping location in the pilot region and the initial RB from the mappable location in the pilot region.
[23]
23. Method, according to claim 20, characterized by the fact that the method further comprises: receiving, by the terminal device, information indicating the initial location of the pilot region, where the information indicating the initial location indicates a number of RB corresponding to an initial RB to transmit the reference signal in the system bandwidth.
[24]
24. Method, according to claim 20 or 23, characterized by the fact that the initial location of the frequency domain of the resource to transmit the CSI-RS is within the BWP.
[25]
25. Method according to claim 24, characterized by the fact that the initial RB of the BWP is different from the initial RB of the system bandwidth.
[26]
26. Method according to any one of claims 20, 23 to 26, characterized by the fact that the initial RB of the pilot region is an initial RB of the BWP of the terminal device.
[27]
27. Method according to any one of claims 26, characterized by the fact that the method further comprises: receiving, by the terminal device, information indicating a reference signal location, in which information indicating the location of a reference signal. reference signal indicates an RB to transmit the CSI-RS in the pilot region.
[28]
28. Method according to claim 27, characterized by the fact that the indication information of the reference signal location is a bitmap, the bitmap comprises at least one indication bit, each indication bit is used to indicate whether a group of RBs is used to transmit the CSI-RS, and each group of RBs comprises at least one RB.
[29]
29. Communication device, characterized by the fact that it comprises: a memory configured to store instructions; and one or more memory-coupled processors, wherein the one or more processors are configured to execute the instructions to cause the apparatus to execute the method of any one of claims 1 to 5, 11 to 19.
[30]
30. Communication device, characterized by the fact that it comprises: a memory configured to store instructions; and one or more processors coupled to the memory, wherein the one or more processors are configured to execute instructions to cause the apparatus to execute the method as defined in any one of claims 6 to 10, to 28.
[31]
31. Communication device, characterized by the fact that it comprises a transceiver module, in which the transceiver module is configured to send a channel status information reference signal (CSI-RS) based on an initial frequency domain location of a resource to transmit the CSI-RS, where the initial domain location of the frequency of the resource to transmit the CSI-RS is determined by an offset from a pilot region, the offset from the pilot region indicates a resource offset between a block of initial RB resources from the pilot region and an initial RB of a portion of the BWP bandwidth of a terminal device, or the offset of the pilot region indicates a resource offset between an initial RB of the pilot region and an initial RB of the bandwidth system, and the pilot region is a resource that is used to transmit the CSI-RS.
[32]
32. Communication device, characterized by the fact that it comprises a transceiver module, in which the transceiver module is configured to receive a channel status information reference signal (CSI-RS) based on an initial frequency domain location of a resource to transmit the CSI-RS, where the initial domain location of the frequency of the resource to transmit the CSI-RS is determined by an offset from a pilot region, the offset from the pilot region indicates a resource offset between a block resource initial RB of the pilot region and an initial RB of a portion of the BWP bandwidth of the end device, or the offset of the pilot region indicates a resource offset between an initial RB of the pilot region and an initial RB of the bandwidth of system, and the pilot region is a resource that can be used to transmit the CSI-RS.
[33]
33. Communication device, characterized by the fact that it comprises a transceiver module, in which the transceiver module is configured to send a probe reference signal (SRS) based on an initial subcarrier location to transmit the SRS, in which the location of the initial subcarrier to transmit the SRS is determined by an offset from a polling region, the offset from the polling region indicates a resource offset between an initial subcarrier of the polling region and an initial subcarrier of a portion of bandwidth Terminal device BWP, and the polling region is a resource that is used to transmit the SRS.
[34]
34. Communication device, characterized by the fact that it comprises a transceiver module, in which it receives a probe reference signal (SRS) from a terminal device based on a location of an initial subcarrier to transmit the SRS, in which the location of the initial subcarrier to transmit the SRS is determined by an offset from a polling region, the offset from the polling region indicates a resource offset between an initial subcarrier of the polling region and an initial subcarrier of a portion of bandwidth Terminal device BWP, and the polling region is a resource that is used to transmit the SRS.
[35]
35. Computer-readable medium characterized by the fact that it comprises instructions that, when executed by a computer, the method as defined in any one of claims 1 to 28 is carried out.
[36]
36. Program characterized by the fact that, when executed by a processor, the method as defined in any one of claims 1 to 28 is carried out.
[37]
37. Communications system, characterized by the fact that the communications system comprises: a first communication device as defined in any of claims 29, 31 and 33; and a second communication device as defined in any of claims 30, 32 and 34.

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法律状态:
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