reference signal transmission technology

专利摘要:
embodiments of the present invention provide a reference signal transmission technology. a base station divides a transmission bandwidth into a plurality of frequency domain units and sends configuration information for sending the reference signal to a terminal. the terminal transmits a reference signal in one or more frequency domain units. one or more frequency domain units and another frequency domain unit form part of the transmission bandwidth supported by the base station. the terminal sends the reference signal in one or more frequency domain units to the base station based on the reference signal sending configuration information.
公开号:BR112019017970A2
申请号:R112019017970
申请日:2018-03-24
公开日:2020-05-19
发明作者:Li Hua；Zhang Min；Dou Shengyue；Qin Yi；Li Zhongfeng
申请人:Huawei Tech Co Ltd；
IPC主号:

专利说明:

REFERENCE SIGNAL TRANSMISSION TECHNOLOGY
TECHNICAL FIELD
[001] The modalities of the present invention refer to communication technologies and, in particular, a reference signal transmission technology.
BACKGROUND
[002] In an LTE / LTE-A system, the uplink measurement of a terminal 110 is implemented by sending an audible reference signal (Sounding Reference Signal, SRS). Referring to Figure 1, a base station 110 obtains uplink channel status information by measuring the SRS received from terminal 120. If terminal 120 and base station 110 have uplink and downlink channel reciprocity, the station base 110 can also obtain downlink channel information. In the LTE / LTE-A system, terminal 120 distant from base station 110 can be limited by the power of terminal 110 when terminal 120 has different distances from base station 110. If the SRS is sent over an entire transmission bandwidth, the intensity of the received signal may be low and the accuracy of the test may be poor due to insufficient energy. To ensure enough power to receive the SRS from base station 110, the SRS sent from terminal 120 can be sent over only a portion of the transmission bandwidth. To measure transmission bandwidth, the SRS needs to be transmitted over different parts of the bandwidth in a frequency hopping manner, to complete the measurement at a system bandwidth. Frequency jumps in the LTE / LTE-A system are performed based on a bandwidth configured in the
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2/78 cell level. In other words, a frequency hopping method of terminal 110 is determined based on a total SRS measurement bandwidth configured uniformly for a cell, thus ensuring the frequency hop orthogonality. Although terminal 120 is also supported in measuring a portion of the total bandwidth of base station 110, the frequency hopping method of terminal 120 is determined based on the total bandwidth, and a delay is related to a delay after the frequency hop is completed at full bandwidth.
[003] In a new generation mobile communications system (NR, new radio), or in another communications system, terminals 120 served by base station 110 may need to measure different bandwidths. Therefore, an original way to perform the frequency hop based on the total SRS measurement bandwidth
evenly configured for at cells can Do not be applicable.SUMMARY[004] The modalities of present invention provide a technology shipping signal in reference applicable to
a plurality of transmission bandwidths to improve the performance of wireless transmission.
[005] According to a first aspect, an embodiment of the present invention provides a method of sending the reference signal. A terminal receives a reference signal configuration information from a base station. The reference send configuration information instructs the terminal to transmit a
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3/78 reference in one or more frequency domain units. The one or more frequency domain units and another frequency domain unit form part of a transmission bandwidth supported by the base station. The terminal sends the reference signal in one or more frequency domain units to the base station based on the reference signal sending configuration information.
[006] According to a second aspect, an embodiment of the present invention provides a reference signal sending apparatus. The apparatus includes a processing unit and a transceiver unit. The transceiver unit receives a referral signal configuration message from a base station. The reference signal sending configuration information instructs a terminal to transmit a reference signal in one or more frequency domain units. The one or more frequency domain units and another frequency domain unit form part of a transmission bandwidth supported by the base station. The processing unit instructs, based on the reference signal sending configuration information, the transceiver unit to send the reference signal in one or more frequency domain units to the base station.
[007] According to a third aspect, an embodiment of the present invention provides a method of sending reference signal configuration information. A base station generates configuration information for sending the reference signal. The reference signal setup information instructs a
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4/78 terminal transmitting a reference signal in one or more frequency domain units. The one or more frequency domain units and another frequency domain unit form part of a transmission bandwidth supported by the base station. The base station sends the configuration information for sending the reference signal to the terminal.
[008] According to a fourth aspect, an embodiment of the present invention provides an apparatus for sending reference signal configuration information. The sending device includes a processing unit and a transceiver unit. The processing unit generates configuration information for sending the reference signal. The reference signal sending configuration information instructs a terminal to transmit a reference signal in one or more frequency domain units. The one or more frequency domain units and another frequency domain unit form part of a transmission bandwidth supported by a base station. The transceiver unit sends the configuration information for sending the reference signal to the terminal.
[009] In a possible implementation, reference signal configuration information includes an indication of a frequency-time resource that is used to transmit the reference signal, and reference reference configuration information includes a first parameter that is used to indicate an order in which the terminal transmits the reference signal in the plurality of frequency domain units.
[0010] In a possible implementation, an order in
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5/78 which terminal sends the reference signal in the plurality of frequency domain units is predefined.
[0011] In a possible implementation, an order in which the processing unit in the second aspect instructs the transceiver to send the reference signal in the plurality of frequency domain units is predefined.
[0012] In a possible implementation, the reference signal sending configuration information includes a second parameter that is used to indicate a correspondence between a time unit in which the terminal sends the reference signal and a frequency domain unit in which the terminal sends the reference signal.
[0013] In a possible implementation, the reference signal sending configuration information includes a grouping parameter that is used to instruct the terminal to group the plurality of frequency domain units, and the reference signals can be sent simultaneously in different groups of frequency domain units.
[0014] In a possible implementation, the grouping parameter includes a number of frequency domain unit groups, and the terminal or processing unit in the second aspect determines, based on the number of frequency domain unit groups and a number of frequency domain units supported by the terminal or the processing unit, frequency domain units included in the frequency domain unit group.
[0015] In a possible implementation, the information
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6/78 reference signal configuration includes one or more types of the following information: a reference signal transmission period on a frequency domain unit, a reference signal bandwidth on the frequency domain unit, a maximum reference signal bandwidth in the frequency domain unit, a starting subcarrier position in which the reference signal is sent in the frequency domain unit, and a correspondence between a time domain resource and a position of frequency domain of the reference signal in the frequency domain unit.
[0016] In a possible implementation, the reference signal configuration information includes a reference period indication parameter of the reference signal, and the terminal or processing unit in the second aspect determines the reference signal transmission period. in a frequency domain unit based on the number of frequency domain units supported by the terminal or processing unit, a frequency domain unit bandwidth or a bandwidth that is used to transmit the reference signal in the frequency domain unit and a frequency hop bandwidth for each hop.
[0017] In a possible implementation, the reference signal sending configuration information includes an indication of the reference signal reference bandwidth, and the terminal or processing unit in the second aspect obtains the signal bandwidth in the frequency domain unit based on the reference bandwidth indication of the
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7/78 reference, a sub-carrier spacing of the frequency domain unit, and density of the reference signal frequency domain in the frequency domain unit.
[0018] In a possible implementation, the bandwidth of the reference signal is not greater than the bandwidth of the frequency domain unit or the maximum bandwidth of the reference signal in the frequency domain unit.
[0019] In a possible implementation, the reference signal sending configuration information includes a reference signal reference subcarrier indication, and the reference signal reference starting subcarrier indication is used to indicate a departure subcarrier to send the reference signal.
[0020] In an implementation possible, the identifiers outgoing subcarriers of the signal in reference in plurality of units in domain in frequency are the same.
[0021] In a possible implementation, the reference signal sending configuration information includes an indication of a reference correspondence between a time domain resource and a frequency domain position of the reference signal; and the terminal or processing unit in the second aspect determines the correspondence between the time domain resource and the frequency domain position of the reference signal on the frequency domain unit based on the reference correspondence between the domain domain resource. time and frequency domain position of the reference signal, or the
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8/78 terminal or the processing unit in the second aspect determines the correspondence between the time domain resource and the frequency domain position of the reference signal in the frequency domain unit based on the bandwidth of the reference signal in the frequency domain unit and the reference correspondence between the time domain resource and the frequency domain position of the reference signal.
[0022] In a possible implementation, the frequency domain position of the reference signal in the frequency domain unit is determined based on the sending time of the reference signal in the plurality of frequency domain units supported by the terminal.
[0023] In a possible implementation, the reference signal sending configuration message includes: a first bandwidth that is used to indicate a bandwidth used to transmit the reference signal in the frequency domain unit and a second bandwidth that is used to indicate a bandwidth to send the reference signal in a symbol, and the first bandwidth consists of a plurality of second bandwidths. The terminal determines, based on a predefined rule or configuration information from the base station, to select a few second bandwidths in a reference signal period to send the reference signal.
[0024] In a possible implementation, the plurality of second bandwidths used to send the reference signal are located in different symbols.
[0025] In a possible implementation, the rule
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The default 9/78 is that when the currently transmitted reference signal is used for beam scanning, either a subcarrier spacing of the currently transmitted reference signal is greater than a reference subcarrier spacing or a subcarrier spacing that is transmission PUSCH performed by the terminal on the frequency domain unit and which is configured by the base station, the terminal determines to send the reference signal in the reference signal period in some of the plurality of second bandwidths that form the first bandwidth.
[0026] In a possible implementation, the configuration information of the base station is at least one of the following types of configuration information: (1) indication information including identifiers of some second bandwidths, used to instruct the terminal to send the reference signal in the second bandwidth; (2) indication information, including index information to obtain identifiers for some second bandwidths, used to instruct the terminal to send the reference signal at the second bandwidths; (3) indication information including a frequency spacing, used to instruct the terminal to transmit the reference signal in the plurality of second bandwidths whose spacing is the frequency domain spacing, where the second bandwidths correspond to the spacing. the frequency domain includes a predefined initial frequency domain or an initial frequency domain position indicated by the base station; and (4) indication information including a sequence spacing of the second bandwidths, used to instruct the terminal to determine,
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10/78 based on sequence spacing, a few second bandwidths to send the reference signal.
[0027] According to a fifth aspect, an embodiment of the present invention provides a communications device, including a processor and a transceiver. The processor performs functions of the processing unit in the second aspect, and the transceiver performs functions of the transceiver unit in the second aspect.
[0028] According to a sixth aspect, an embodiment of the present invention provides a communications device, including a processor and a transceiver. The processor performs functions of the processing unit in the fourth aspect, and the transceiver performs functions of the transceiver unit in the fourth aspect.
[0029] According to a seventh aspect, an embodiment of the present invention provides a program. When executed by a processor, the program is used to execute the method in the first aspect or in any optional way in the first aspect.
[0030] According to an eighth aspect, an embodiment of the present invention provides a program. When executed by a processor, the program is used to execute the method in the third aspect or in any optional way in the third aspect.
[0031] According to a ninth aspect, an embodiment of the present invention provides a program product, for example, a computer-readable storage medium, and the program product includes the program in the seventh aspect or the program in the eighth aspect.
[0032] In the previous aspects, a message of
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11/78 reference signal sending configuration is sent separately to frequency domain units, so that the terminals served by the same base station can still feed reference signals in a frequency hopping way when different bandwidths are supported.
[0033] According to a tenth aspect, an embodiment of the present invention provides a method of sending the reference signal. A terminal receives an indication of a plurality of reference signal resources. The indication includes information about the plurality of reference signal resources and information indicating that the plurality of reference signal resources belongs to a first group. The terminal receives the first indication information. The first indication information indicates a relationship between reference signals transmitted in the plurality of reference signal resources in the first group. The terminal sends a reference signal based on the first indication information and the indication of the plurality of reference signal resources.
[0034] According to an eleventh aspect, an embodiment of the present invention provides a reference signal sending apparatus. The sending device includes a processor and a transceiver. The transceiver receives an indication of a plurality of reference signal resources. The indication includes information about the plurality of reference signal resources, and information indicating that the plurality of reference signal resources belong to a first group. The transceiver receives the first indication information. The first
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12/78 indication information indicates a relationship between reference signals transmitted in the plurality of reference signal resources in the first group. The processor instructs, based on the first indication information and the indication of the plurality of reference signal resources, that the transceiver sends a reference signal.
[0035] According to a twelfth aspect, an embodiment of the present invention provides a method of sending a reference signal configuration message. A base station generates an indication of a plurality of reference signal resources. The indication includes information about the plurality of reference signal resources and information indicating that the plurality of reference signal resources belongs to a first group. The base station generates the first indication information. The first indication information indicates a relationship between reference signals transmitted in the plurality of reference signal resources in the first group. The base station sends the first indication information and the indication of the plurality of reference signal resources to the terminal.
[0036] According to a thirteenth aspect, an embodiment of the present invention provides an apparatus for sending reference signal configuration messages. The device includes a processor and a transceiver. The processor generates an indication of a plurality of reference signal resources. The indication includes information about the plurality of reference signal resources and information indicating that the plurality of reference signal resources belongs to a first group. The processor generates
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13/78 the first indication information. The first indication information indicates a relationship between reference signals transmitted in the plurality of reference signal resources in the first group. The processor instructs the transceiver to send the first indication information and the indication of the plurality of reference signal resources to a terminal.
[0037] In a possible implementation, the relationship between reference signals transmitted in the plurality of reference signal resources includes an almost co-location relationship (QCL) between antenna ports of the reference signals transmitted in the plurality of signal resources of reference. The QCL ratio means that a parameter from one antenna port can be determined based on a parameter from another antenna port.
[0038] In a possible implementation, the QCL ratio is at least one of the following: The same transmission beam is used for the reference signals; different transmission beams are used for the reference signals; the same receiving beam is used for the signals
of reference; and different beams receiving they're used for the signs in reference. [0039] In an implementation possible, the information
The first indication includes a time domain difference between time-frequency resources from the plurality of reference signal resources.
[0040] According to a fourteenth aspect, an embodiment of the present invention provides a communications device, including a processor and a transceiver. The processor performs functions of the processing unit in the
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14/78 eleventh aspect, and the transceiver performs functions of the transceiver unit in the eleventh aspect.
[0041] According to a fifteenth aspect, an embodiment of the present invention provides a communications device, including a processor and a transceiver. The processor performs functions of the processing unit in the thirteenth aspect, and the transceiver performs functions of the transceiver unit in the thirteenth aspect.
[0042] According to a sixteenth aspect, an embodiment of the present invention provides a program. When executed by a processor, the program is used to execute the method in the tenth aspect or in any optional way in the tenth aspect.
[0043] According to a seventeenth aspect, an embodiment of the present invention provides a program. When executed by a processor, the program is used to execute the method in the twelfth aspect or in any optional way in the twelfth aspect.
[0044] According to an eighteenth aspect, an embodiment of the present invention provides a program product, for example, a computer-readable storage medium, and the program product includes the program in the sixteenth aspect or the program in the sixteenth seventh aspect.
[0045] In accordance with a nineteenth aspect, the present invention provides a method of sending a reference signal. A terminal receives symbol configuration information that is used to indicate a number of symbols in an interval and a symbol that is used to transmit a reference signal in the interval. The terminal sends the reference signal based on the message
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15/78 configuration of the symbol.
[0046] According to a twentieth aspect, the present invention provides a reference signal sending apparatus. The sending device includes a processor and a transceiver. The transceiver receives, from a base station, symbol configuration information that is used to indicate a number of symbols in an interval and a symbol that is used to transmit a reference signal in the interval. The processor instructs the transceiver to send the reference signal based on the symbol's configuration message.
[0047] According to a twenty-first aspect, the present invention provides a method of sending symbol configuration messages. A base station generates symbol configuration information that is used to indicate a number of symbols in an interval and a symbol that is used to transmit a reference signal in the interval. The base station sends the symbol configuration message to a terminal.
[0048] In accordance with a twenty-second aspect, the present invention provides an apparatus for sending symbol configuration messages. The sending device includes a processor and a transceiver. The processor generates symbol configuration information that is used to indicate a number of symbols in an interval and a symbol that is used to transmit a reference signal in the interval. The processor instructs the transceiver to send the symbol configuration message to a terminal.
[0049] In a possible implementation, a number of symbols that are used to transmit the reference signal in the range are k, and k = n or k <m. Here, k and m are
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16/78 natural numbers, m <n and n is a number of uplink transmission symbols in the range.
[0050] According to a twenty-third aspect, an embodiment of the present invention provides a communications device, including a processor and a transceiver. The processor performs functions of the processing unit in the twentieth aspect, and the transceiver performs functions of the transceiver unit in the twentieth aspect.
[0051] According to a twenty-fourth aspect, an embodiment of the present invention provides a communications device, including a processor and a transceiver. The processor performs functions of the processing unit in the twenty-second aspect, and the transceiver performs functions of the receiving unit in the twenty-second aspect.
[0052] According to a twenty-fifth aspect, an embodiment of the present invention provides a program. When executed by a processor, the program is used to execute the method in the nineteenth aspect or in any optional manner in the nineteenth aspect.
[0053] According to a twenty-sixth aspect, an embodiment of the present invention provides a program. When executed by a processor, the program is used to execute the method on the twenty-first aspect or any optional way of the twenty-first aspect.
[0054] According to a twenty-seventh aspect, an embodiment of the present invention provides a program product, for example, a computer-readable storage medium, and the program product includes the program in the twenty-fifth aspect or the program in the twenty-fifth sixth aspect.
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BRIEF DESCRIPTION OF THE DRAWINGS
[0055] Figure 1 is a schematic diagram of a communication scenario according to one modality of this request;
Figure 2 is a schematic diagram of dividing frequency domain units;
Figure 3 is a schematic flowchart of sending a reference signal;
THE Figure 4 is one schematic diagram in an RPF; THE Figure 5 is one schematic diagram in calculation of a width band frequency jump; THE Figure 6 is one schematic diagram in calculation of a
initial frequency jump value;
Figure 7 is a schematic diagram of a frequency jump order between different frequency domain units;
Figure 8 is a schematic flowchart of sending a reference signal;
Figure 9 is a schematic diagram of a group of reference signal resources according to an embodiment;
Figure 10 is a schematic structural diagram of a base station according to an embodiment of this application;
Figure 11 is a schematic structural diagram of a terminal according to an embodiment of this application;
Figure 12 is a schematic structural diagram of a base station according to an embodiment of this application;
Figure 13 is a schematic structural diagram of a terminal according to an embodiment of this application; and
Figure 14 is a schematic diagram of some second bandwidths in a domain
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18/78 frequency.
DESCRIPTION OF MODALITIES
[0056] The following describes the technical solutions in the modalities of this application with reference to the attached drawings. Apparently, the modalities described are only some, but not all, of this application.
[0057] Below, some terms are described in this application, to help the technicians in the subject to have a better understanding.
(1) A terminal 120 is also referred to as user equipment (User Equipment, UE) or mobile equipment (mobile equipment, ME) and is a device that provides voice and / or data connectivity to a user. For example, terminal 120 is a handheld device or a vehicle device that has a wireless function. Common terminals 120 include, for example, a mobile phone, a tablet computer, a laptop computer, a pocket computer, a mobile internet device (MID) and a wearable device such as a smart watch, a smart bracelet , or a pedometer.
(2) A base station 110 is a network device that connects terminal 120 to a wireless network. Base station 110 includes, but is not limited to: a transmission reception point (Transmission Reception Point, TRP), an evolved NodeB (evolved NodeB, eNB), a radio network controller (radio network controller, RNC), a NodeB (NodeB, NB), a base station controller (Base Station Controller, BSC), a base transceiver station (Base Transceiver Station, BTS), a base station (for example, Home evolved NodeB or Home NodeB, HNB), a baseband unit
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19/78 (Basedband unit, BBU), or a WiFi access point (Access Point, AP).
[0058] A slot in the embodiments of the present invention can be a TTI and / or a time unit and / or a subframe and / or a mini-interval.
[0059] With the development of the mobile internet, the resources of the sub-6G spectrum become insufficient. To meet a growing requirement for rate and communication capacity, high frequency radio resources with abundant spectrum resources become an important research direction for a wireless communications system. High frequency communication is characterized by a large transmission bandwidth. Therefore, a transmission bandwidth that is much larger than a sub-6G transmission bandwidth can occur. For example, a maximum transmission bandwidth supported by the sub-6G is 20 MHz and an NR transmission bandwidth can be 100 MHz or even 400 MHz or something similar. Therefore, a cell's transmission bandwidth may be greater than the maximum bandwidth capacity of terminal 120. In this case, terminal 110 may use only a portion of the bandwidth. In other words, both the measurement and transmission of terminal 110 must be performed on the part of the bandwidth. Therefore, the wireless communications system must support the sending of an SRS over a portion of the bandwidth (partial band) in a frequency hopping (Frequency-hopping) manner. The bandwidth portion can also be referred to as a frequency domain unit. A plurality of frequency domain units form the bandwidth of
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20/78 transmission from base station 110, or form a part of the transmission bandwidth, or may be a part of bandwidth part. The bandwidth portion is a segment of consecutive frequency domain resources configured by the base station for the terminal and has unique subcarrier spacing and a cyclic prefix. Alternatively, the bandwidth portion can be configured based on user-specific signaling, for example, user-specific RRC signaling and / or MAC CE and / or DCI signaling. Different terminals 110 can support different transmission bandwidths. Therefore, the terminals 120 in the same cell of the base station support different bandwidths and the bandwidths required for measurement are different.
[00 60] In a scenario with uplink and downlink channel reciprocity, terminal 120 obtains a channel with a relatively good signal for interference plus signal to interference and noise ratio (SINR) or signal quality indicator. channel (CQI, channel quality indicator) through downlink measurement. However, if the channel state information (CSI) of the channel is quantified and then reported to base station 110, the accuracy of the channel is affected and the relatively large overhead of uplink control is occupied. Therefore, terminal 120 can send an SRS, so that base station 110 obtains the uplink CSI by measuring the SRS and then determines the CSI of a downlink channel based on the reciprocity of the channel. Because terminal 120 became aware of a frequency band with good
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21/78 channel quality, terminal 120 can send only one SRS for a specified frequency band instead of an SRS for the entire bandwidth, to reduce overhead and a delay. Terminal 120 can obtain SRS measurement bandwidth by measuring downlink channel measurement from terminal 120 (for example, using a channel state information reference signal (CSI-RS) ) or based on an SRS measurement bandwidth indication of base station 110 (the SRS measurement bandwidth can be determined by base station 110 based on the CQI reported by terminal 110).
[0061] The SRS frequency hop is supported on the existing LTE / LTE-A. For the SRS frequency hopping implementation, a total measurement bandwidth is determined based on a bandwidth configured at the cell level, and then a measurement bandwidth for each hop is configured based on the signaling in the user level. Details are shown in Tables N z to 4 below. kb and a quantity of RBs of an uplink transmission bandwidth. Four tables are provided respectively based on different uplink transmission bandwidths. For this part of the content, refer to 3GPP TS36.211.
Table 1: ^msRSfe e, ^{b 0.1} , 2.3, values for the uplink bandwidth of N «b - 40
SRS bandwidth configurationQrs Bandwidth SRS ^ SRS ⁼ θ Bandwidth SRS ^ SRS ⁼ 1 Bandwidth SRS ^ SRS ⁼ 2 Bandwidth SRS ^ SRS ⁼ 3 ^m SRS, 0 N _o ^m SRS, l ^m SRS, 2 n ₂ ^m SRS, 3 n ₃
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22/78
0 36 1 12 3 4 3 4 1 1 32 1 16 2 8 2 4 2 2 24 1 4 6 4 1 4 1 3 20 1 4 5 4 1 4 1 4 16 1 4 4 4 1 4 1 5 12 1 4 3 4 1 4 1 6 8 1 4 2 4 1 4 1 7 4 1 4 1 4 1 4 1
Table 2: ^{msRS 6} _and N _bf b 0,1,2,3, values for the uplink bandwidth of ^{40 <V |} <- ⁶⁰
SRS bandwidth configurationQrS SRS bandwidth®SRS - θ SRS bandwidth®SRS - 1 SRS ®SRS bandwidth - ² SRS bandwidth®SRS - 3 ^m SRS, 0 N ₀ ^m SRS, l V ^m SRS, 2 N ₂ ^m SRS, 3 N ₃ 0 48 1 24 2 12 2 4 3 1 48 1 16 3 8 2 4 2 2 40 1 20 2 4 5 4 1 3 36 1 12 3 4 3 4 1 4 32 1 16 2 8 2 4 2 5 24 1 4 6 4 1 4 1 6 20 1 4 5 4 1 4 1 7 16 1 4 4 4 1 4 1
Table 3: ^msRSfe e, ^b θ ' ¹ , 2,3, values for the uplink bandwidth of ^{60 <1Vr} b - ⁸ θ
SRS bandwidth configurationGrs Bandwidth SRS ^ SRS ⁼ θ Bandwidth SRS ^ SRS ⁼ 1 Bandwidth SRS ^ SRS ^{= 2} Bandwidth SRS ^ SRS ⁼ 3 ^m SRS, 0 N ₀ ^m SRS, l ^m SRS, 2 N ₂ ^m SRS, 3 n ₃ 0 72 1 24 3 12 2 4 3 1 64 1 32 2 16 2 4 4
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2 60 1 20 3 4 5 4 1 3 48 1 24 2 12 2 4 3 4 48 1 16 3 8 2 4 2 5 40 1 20 2 4 5 4 1 6 36 1 12 3 4 3 4 1 7 32 1 16 2 8 2 4 2
Table 4: ^{msRS 6} e and ^b θ ' ¹ , 2,3, values for the uplink bandwidth of ^{80 <1Vr} b - ¹¹⁰
SRS bandwidth configurationGrs SRS Ars bandwidth ⁼ θ SRS Ars bandwidth ⁼ 1 SRS Ars bandwidth ⁼ 2 SRS Ars bandwidth ⁼ 3 ^m SRS, 0 N ₀ ^m SRS, l ^m SRS, 2 N ₂ ^m SRS, 3 N ₃ 0 96 1 48 2 24 2 4 6 1 96 1 32 3 16 2 4 4 2 80 1 40 2 20 2 4 5 3 72 1 24 3 12 2 4 3 4 64 1 32 2 16 2 4 4 5 60 1 20 3 4 5 4 1 6 48 1 24 2 12 2 4 3 7 48 1 16 3 8 2 4 2
[0062] Different transmission bands correspond
C to different tables. In the tables, ^SRS and a bandwidth
SRS B configured at the cell level and ^SRS is an ^SRS bandwidth configured at the user level (both are configured using higher layer signaling). Terminal 110 can determine a total bandwidth of SRS ^SRS frequency hops ^, ° and a ^{srs, Ssrs} and BN ^bandwidth of each hop based on the received ^SRS and ^SRS . Here, ^b is a granularity of dividing a frequency hopping bandwidth of current level with respect to a width of
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24/78 frequency jump band of previous level. It can be learned from the tables that an SRS supports a maximum of four levels of division, namely three times of division in total. For example, ^<3 θ < ^{/ V} ru ^ 110, C _SRS -1, ®srs - 3 θ _a total frequency hopping bandwidth of terminal 110 is 96 RBs. There are 96 RBs at level 0. At level 1, 96 RBs are divided into two parts and each bandwidth is 48 RBs. At level 2, 48 RBs are divided into two parts and each bandwidth is 24 RBs. There are 2 * 2 = 4 bandwidths in total. At level 3, 24 RBs are divided into six parts and each bandwidth is 4 RBs. There are 2 * 2 * 6 = 24 bandwidths in total. In other words, a bandwidth for each SRS hop is 4 RBs, and 24 hops in total are required to complete the full bandwidth measurement.
[0063] A specific frequency hopping method is as follows: Base station 110 sets up a frequency hop start position. For example, when there are n frequency jump positions, the start position is one of the n positions. For example, in the previous example, base station 110 configures, using the highest layer signaling, one of the 24 parts as the starting position of the frequency hop, where each part is 4 RBs. In a subsequent frequency hopping process, terminal 110 calculates, according to a frequency hopping rule specified in a protocol, an SRS frequency domain position of a current hop. The frequency domain position is one of the n frequency hop positions. Here, the frequency jump position for each jump is determined based on a position on each of the four levels, namely,
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25/78 four levels nt, where b = 0, 1, 2, 3. If the frequency jump is performed for the SRS it is configured based on a parameter ^ ^{llop and} ίθΊ, 2,3}. parameter value is set based on an EU-level RRC parameter srsHoppingBandwidth. A specific frequency hopping method is as follows:
If frequency hopping is not enabled (SRS ^llop ^ "^ ^SRS), a value ^nb a frequency position index is set to ^4.1 U ^{_ b} RRC / ^m SRS 6J ^ b ^mod _(unless reconfiguration of the RRC connection is performed). Here, ^Wrrc is configured based on freqDomainPosition (used for a periodic SRS) and freqDomainPosition-ap (used for an aperiodic SRS).
[0064]
If frequency hopping is enabled for SRS ( ^{Z 1, op <Srsrs} ), a value of a frequency position index is
| 4n _RRC / m _{SRS /} J mod N _b b <b _hop {Fb (Vsrs) + | 4n _RRC / m _SRS £,]} mod N _b otherwise
[0065]
Here, nRRc is signaling configured by base station 110, and is used to configure the initial frequency hop position. Different values of urrc lead to different positions in the frequency domain of a first jump. / A'srsz defined according to the following formula:
Fb ( ⁿ sRs) (N _b / 2) n _SRS mod nf = _bí N _b , n _SRS mod nf = _bí N _b ,

if N _b is even
'hop se
N _b is impa (regardless of the value of
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26/78 ⁿ SRS
2N _SP n _f + 2 (7V _SP - 1) [^] +
[(ny x 10 + L ^{n no} / 2J) / T _SRS J,
[0066]
Toffs et
Toffset max
Here,, for 2-ms frame structure type 2 SRS periodicity otherwise ^{/ SRS} is a specific transmitted quantity of SRS from the UE;
TT, _and SRS _are offset à a period of an SRS symbol-level cell and a displacement
T SRS subframe that is configured by the base station; _and 'T is a maximum ^offset value in a specified SRS subframe offset configuration. It should be noted that a narrow band SRS does not necessarily mean that the frequency jump is necessary. If the frequency hop is not performed for the narrowband SRS, the UE reports only SRS information for a specified segment of RBs.
[0067] An initial frequency domain position of a channel at each jump of the SRS can be calculated based on the obtained nt. For a calculation method, see the following formula. The starting position of the frequency domain of the
The RS p (p) _ K (p) I Ύ 'V- n - ^K 0 - ^K 0 ⁺ /, ^The TC ^yw sc, b ⁿ b SRS transmission is ^{b = 0 0} indicates a displacement and can be used for SRS transmission from a low frequency of an uplink transmission bandwidth, namely, a position of a first subcarrier which can be used for SRS transmission in a frequency band, or in a position of a starting subcarrier of an SRS bandwidth, where ⁼ (ÍArb / 2- | -m _SRS 0/2) / v _sc + {max (Arb ^{- m} sRS o ^{SC TC if} (θ ' ¹ / ^m ° d 2) · ( 2 ^- A _SP ) + n _hf ) mod 2 = 0 (p) k _tc otherwise _k (P) ₌ í ^1_ ^ TC if n | _RS e {4,5,6,7} ep E {1,3} e W _ap = 4 ^TC l ^ tc otherwise
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27/78
[0068] Here in, ⁿ t is a system frame number and ” ^hf means that a system frame consists of two half frames. If the UpPTS is located in the first half frame, ” ^hf is equal to 0. If the UpPTS is located in the second half frame,” ^hf is equal to 1. ^ ^sp is an amount of switch points ') from DL to UL on a system board. For Frequency of the downlink switching point for Uplink Link of 5 ms, a value of ^ ^sp is 2. For Frequency of the downlink switching point for uplink link of 10 ms, a value of ^ ^sp is 1 (referring to see Table 4.2-2 in 36.211). ^Nap is a number of antenna ports used for SRS transmission. ^p is an antenna port index. For details, refer to Table 5.2.1-1 in 36.211.
[0069] Here, the formula is divided into two parts:
®SRS p „, Σ ^2Λί Ξ„ ⁰ and ^b ~ ° for analysis. For a normal subframe, ü ^(p) = /2j-mSRS.0/2)vs ^R c ^B. (L <b / 2j-mSRS, 0/2) <c ^B is used to exclude an area irrelevant to the SRS and which is used for low frequency PUCCH transmission from an uplink system. A value of ^{T (} is 0 or 1 and is used to determine one shows an example of a '= 0 ^SRS . You can learn comb tooth to be used. The figure
2V ^ul = 100 normal subframe in which ^{RB is} that, if the ^TC value is 0, ⁰ ; or if the ^TC value is ^ SRS
ÊCa
[0070] ^b ~ ° can be considered as a selected part obtained after the SRS bandwidth is equally divided into N parts. Here, ^Hb is an index of
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28/78 position of the frequency domain whose value remains unchanged, unless the RRC connection reconfiguration is performed and ^ ^RC is configured based on freqDomainPosition (used for a periodic SRS) and freqDomainPosition-ap (used for an aperiodic SRS) and determines the value of ^Hb . See Figure 7 through Figure 10. More specifically, ” ^RRC determines a position of the starting frequency domain of the SRS transmission.
ά rUL __- 1
[0071] For example, ^RB and ^c srs-0 (for
D _ Q simplicity, a scenario in which ^SRS is omitted). A η N value of ⁰ is fixed at 0 because a value of ⁰ is fixed at 1. 2M ^RS
In addition, ^sc ' ^h equals SRS width and bandwidth
[0072] It can be learned from the previous description that different UEs can send SRSs using the same subframe and the same set of RB, but using different ^CTs for differentiation.
Mode 1
[0073] In this embodiment of the present invention, a base station 110 divides a transmission bandwidth supported by base station 110 into a plurality of frequency domain units and allocates frequency domain units to terminals 120 served by base station 110 Referring to Figure 2, in one example, the transmission bandwidth of base station 110 is divided into three frequency domain units 201, 202 and 203. A terminal UE1 supports frequency domain units 201 and 202. One terminal UE2 supports frequency domain units 202 and 203. A terminal UE3 supports frequency domain unit 203. The frequency domain unit can be configured by base station 110 using signaling to the
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29/78 cell level, for example, a broadcast message or a system message; or it can be configured using user level signaling, for example, RRC signaling or MAC CE signaling. Different terminals can support the same frequency domain unit. Different frequency domain units do not overlap in the frequency domain.
[0074] The base station 110 divides the transmission bandwidth of the base station 110 into the plurality of frequency domain units and allocates the frequency domain units to the terminals 120 served by the base station 110. Different terminals 120 can support the same frequency domain unit. In the frequency domain unit, a reference signal is sent in the frequency hopping manner described above. In this way, different terminals 120 support different bandwidths. In other words, different terminals 120 support different frequency domain units. For example, UE2 supports frequency domain units 202 and 203, and UE3 supports only frequency domain unit 203. However, for the same frequency domain unit 202, terminals UE2 and UE3 send reference signals in the same bandwidth (for example, frequency domain unit 202) in the frequency hopping manner described above. A frequency domain unit bandwidth is used to replace a configured bandwidth at the cell level. Thus, in a frequency hopping process, terminals 110 with different starting positions do not jump to the same position at the same time.
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[0075] An SRS reference signal in this embodiment of the present invention may alternatively be a demodulation reference signal, DMRS or a CSI-RS channel status reference signal.
[0076] In an optional implementation, a cell level reference signal frequency hop bandwidth does not need to be configured on each frequency domain unit because base station 110 can configure a domain unit bandwidth frequency. The cell-level reference signal frequency hop bandwidth means a full frequency hop bandwidth that is used by terminal 120 to complete sending the reference signal within a period. In this embodiment, the frequency domain unit bandwidth can be used as the cell-level reference signal frequency hop bandwidth to perform the frequency hop and send the reference signal. Alternatively, a plurality of frequency hopping bandwidths of the reference signal can be configured in each frequency domain unit, and the reference signal is transmitted in each frequency hopping bandwidth in a frequency hopping manner. . However, for ease of description, this embodiment of the present invention is described using an example in which the cell-specific reference signal frequency hop bandwidth does not need to be configured in each frequency domain unit. When a plurality of signal frequency hopping bandwidths
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31/78 reference is configured in a frequency domain unit, each configured reference frequency frequency hop bandwidth can be used as a frequency domain unit, so that the reference signal can be transmitted as described in this embodiment of the present invention.
[0077] Referring to Figure 3, in step 301, a base station 110 sends reference signal configuration information to a terminal 120. The reference signal configuration information instructs terminal 120 to transmit a signal reference in one or more frequency domain units. The one or more frequency domain units and another frequency domain unit form part of a transmission bandwidth supported by base station 110. In step 302, terminal 120 sends the reference signal in one or more units of frequency. frequency domain for base station 110 based on reference signal send configuration information.
[0078] The reference signal sending configuration information includes an indication of a frequency-time resource that is used to transmit the reference signal. When terminal 120 supports the plurality of frequency domain units, the reference signal sending configuration information may further include a first parameter. The first parameter indicates an order in which terminal 120 transmits the reference signal in the plurality of frequency domain units. As shown in Figure 2, base station 110 instructs terminal UE3 to transmit the reference signal on the
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32/78 frequency domain unit 202 and then transmits the reference signal in frequency domain unit 203. Certainly, in another implementation, the order in which terminal 120 transmits the reference signal in the plurality of units of frequency frequency domain can also use a predefined rule. For example, the order of transmission of the reference signal in different frequency domain units is determined as a descending order or an ascending order of frequencies. The reference signal sending configuration information includes a second parameter that is used to indicate a correspondence between a unit of time in which terminal 120 sends the reference signal and a frequency domain unit in which terminal 120 sends the reference signal. The correspondence determines a frequency domain unit in which the reference signal is initially sent within a reference signal sending period. Then, the reference signal is transmitted via the frequency hop in the frequency domain units, based on the order indicated by the first parameter and the correspondence between the time unit and the frequency domain unit in the second parameter.
[0079] In an implementation, when terminal 120 supports the plurality of frequency domain units, base station 110 can further notify terminal 120 of frequency domain units to transmit the reference signal via frequency hopping. In this way, terminal 120 can transmit the reference signal only in some frequency domain units instead of
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33/78 transmitting the reference signal in all frequency domain units in the frequency hopping manner.
[0080] If terminal 110 can transmit the reference signal in the plurality of frequency domain units simultaneously, the base station 110 can group the frequency domain units, and the reference signal can be sent using each group in the manner described in the previous modality. A way of grouping can be configured directly or a number of groups can be configured. The frequency domain units supported by terminal 120 are grouped based on factors such as a bandwidth that needs to be measured, the number of frequency domain units supported by terminal 120 and / or a total number of jump segments. frequency for transmission of reference signal. Frequency domain units in the same group can be consecutive or non-consecutive in the frequency domain. Specifically, the base station 110 can provide a grouping parameter to terminal 120. The grouping parameter includes a number of frequency domain unit groups. Terminal 120 determines, based on the number of frequency domain unit groups and the number of frequency domain units supported by terminal 120, frequency domain units included in the frequency domain unit group.
[0081] Optionally, to avoid collision, the base station 110 can also configure a blank frequency domain unit between different frequency domain units. The blank frequency domain unit
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34/78 means a frequency domain unit in which the reference signal is not transmitted when the frequency hop is performed to jump to the frequency domain unit.
[0082] The reference signal configuration information includes one or more types of the following information: a reference signal transmission period, a reference signal bandwidth, a maximum reference signal bandwidth in the frequency domain, a starting subcarrier position in which the reference signal is sent in the frequency domain unit, and a correspondence between a resource in the time domain and a frequency domain position of the reference signal. The reference signal transmission period means a time at which terminal 120 completes the transmission of the reference signal on all frequency domain units that need to be measured. The frequency domain units that need to be measured can be some of all frequency domain units supported by terminal 120. Terminal 120 can determine a time to transmit the reference signal on a specified frequency domain unit, based on the reference signal transmission period, the number of frequency domain units, the frequency domain unit bandwidth or the bandwidth used to transmit the reference signal on the frequency domain unit, and a frequency hop bandwidth for each hop. Specifically, if there are two frequency domain units that need to be measured, a bandwidth of
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35/78 a first frequency domain unit is 96 RBs, and a frequency hop bandwidth for each hop is 4 RBs, the frequency hop needs to be performed 24 times. If a bandwidth of a second frequency domain unit is 128 RBs, and a frequency hop bandwidth for each hop is 16 RBs, the frequency hop needs to be performed 8 times. Thus, the time required for the first frequency domain unit is twice that required for the second frequency domain unit. If the transmission period of the reference signal is T, the time to transmit the reference signal in the first frequency domain unit is 2/3 T, and the time to transmit the reference signal in the second frequency domain unit is 1/3 T. The terminal 120 determines, based on a transmission time in a frequency domain unit and a symbol used to transmit the reference signal, a symbol occupied by the reference signal in the frequency domain unit. Absolute values of time intervals for sending the reference signal in different frequency domain units are the same or have a multiplication ratio.
[0083] In an implementation, a frequency jump time interval can still be defined between the frequency domain units. In other words, after the frequency jump in a frequency domain unit, the frequency jump in a next frequency domain unit is performed after a period of time. For example, the frequency hopping time interval can be configured based on information reported by terminal 120. The frequency hopping time interval
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36/78 can be configured based on a radio frequency reset time (RF retuning time).
[0084] In an implementation, the base station can configure one or more frequency domain units for the terminal and configure the reference signal configuration information for one or more frequency domain units. The reference signal configuration information includes one or more types of the following information: a reference signal transmission period, a bandwidth used to transmit the reference signal in the frequency domain unit, a signal bandwidth reference in a symbol to send the reference signal, and a correspondence between a resource in the time domain and a frequency domain position of the reference signal. The bandwidth used to transmit the reference signal on the frequency domain unit is a bandwidth that needs to be measured using the reference signal on the frequency domain unit. Bandwidth is referred to as a first bandwidth. The bandwidth used to transmit the reference signal is different from the total bandwidth of the reference signal actually sent and is a segment of consecutive bandwidths that includes the total bandwidth of the reference signal actually transmitted. The bandwidth used to transmit the reference signal can be a frequency unit or a part of a frequency domain resource in a frequency unit. The bandwidth of the reference signal in the symbol for sending the reference signal is a bandwidth of the reference signal for each hop and is referred to as a second bandwidth.
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The first bandwidth consists of one or more second bandwidths. In this implementation, terminal 120 determines, based on a hop rule or predefined rule indication information sent by the base station, to send the reference signal in a reference signal period in some of the one or more second bandwidths that form the first bandwidth. The frequency hop rule indication information can also be referred to as indication information that is used to instruct the terminal to transmit the reference signal in some of the second bandwidths. The indication information can be transmitted together with other information in the configuration information of the reference signal, for example, together with the transmission period of the reference signal, the bandwidth used to transmit the reference signal in the domain control unit. frequency, the bandwidth of the reference signal in the symbol for sending the reference signal, or the correspondence between the time domain resource and the frequency domain position of the reference signal. Optionally, the indication information can be used as independent information to be transmitted independently. Optionally, the reference signals are located in different symbols on the second bandwidths. In this solution, terminal 120 sends the reference signal in a few second bandwidths in the first bandwidth in the frequency hopping manner, to complete the measurement of a portion of the first bandwidth. Referring to Figure 14, the blocks in the figure represent eight frequency hopping positions 1, 2, 3, 4, 5, 6, 7 and 8 of a signal
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38/78 reference. In one example, the reference signal is sent in frequency hopping positions 2, 4, 6 and 8 and is not sent in frequency hopping positions 1, 3, 5 and 7. In this solution, a number of times to send the reference signal in a reference signal period can be reduced, the overloads of reference signal resources can be reduced and the reference signal period can be reduced. For a measurement result that changes slowly with a change in frequency, for example, a measurement result obtained by beam selection, a measurement result obtained based on the received power of the reference signal or a measurement result obtained in a scenario where a channel changes slowly with a change in frequency, a measurement result from this implementation is similar to a measurement result obtained when the reference signal is transmitted in the second bandwidths that form the first bandwidth, and a loss of performance is acceptable.
[0085] Optionally, terminal 120 determines, based on a predefined rule or frequency hop rule indication information sent by the base station, to send the reference signal in a reference signal period in some of the one or more seconds bandwidths that form the first bandwidth. The default information is that when a currently transmitted reference signal is used for beam scanning, either a subcarrier spacing of a currently transmitted reference signal is greater than a reference subcarrier spacing or a subcarrier spacing that is PUSCH transmission. performed by the terminal on the unit
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39/78 of frequency domain and which is configured by the base station, terminal 120 determines to send the reference signal in a reference signal period in some of the one or more second bandwidths that form the first bandwidth. For example, terminal 120 sends the reference signal only for the second bandwidths with the same spacing between them. Specifically, if the first bandwidth is 32 RBs and each second bandwidth is 4 RBs, the first bandwidth consists of eight second bandwidths (referring to frequency hopping positions 1, 2, 3 , 4, 5, 6, 7 and 8 in Figure 14). When terminal 120 determines that the reference signal is used for beam scanning, terminal 120 selects the second bandwidths {1, 3, 5, 7} to send the reference signal or selects the second bandwidths {2 , 4, 6, 8} to send the reference signal. The base station can configure a second starting bandwidth.
[0086] Optionally, terminal 120 determines, based on a predefined rule or frequency hop rule indication information sent by the base station, to send the reference signal in a reference signal period in some of the one or more seconds bandwidths that form the first bandwidth. The frequency hop rule indication information sent by the base station is used to indicate at least one of the following: identifiers for some of the second bandwidths that form the first bandwidth; index information that is used to obtain the identifiers for some second bandwidths; a frequency domain spacing that is used to instruct the transmission of the
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40/78 reference signal in some second bandwidths that meet the frequency domain spacing; and a sequence spacing of the second bandwidths that form the first bandwidth.
[0087] When the frequency hop rule indication signal sent by the base station is used to indicate the identifiers for some of the second bandwidths that form the first bandwidth, the terminal transmits the reference signal at the second bandwidths. corresponding to the identifiers of the second bandwidths. Specifically, if the first bandwidth is 32 RBs and each second bandwidth is 4 RBs, the first bandwidth consists of eight second bandwidths (referring to frequency hopping positions 1, 2, 3 , 4, 5, 6, 7 and 8 in Figure 14). When the frequency hop rule indication information sent by the base station is used to indicate identifiers {1, 4, 8} of some of the second bandwidths that form the first bandwidth, the terminal sends the reference signal at second bandwidths {1, 4, 8}.
[0088] When the frequency hop rule indication signal sent by the base station includes the index information, the terminal obtains corresponding second bandwidth identifiers based on the index information, and sends the reference signal at the second widths bandwidth. Specifically, still referring to Figure 14, if the first bandwidth is 32 RBs and each second bandwidth is 4 RBs, the first bandwidth consists of eight second bandwidths (referring to
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41/78 frequency jump positions 1, 2, 3, 4, 5, 6, 7 and 8 in Figure 14). Some of the second bandwidths that make up the first bandwidth can be divided into a first configuration (1, 3, 5, 7} and a second configuration (2, 4, 6, 8). The settings can be configured using higher layer signaling. When the index in the frequency hop rule indication signal sent by the base station indicates the first configuration, the terminal sends the reference signal in the second bandwidths (1, 3, 5, 7). Likewise, if the index information indicates the second configuration, the terminal sends the reference signal in the second bandwidths (2, 4, 6, 8).
[0089] When the frequency hop rule indication signal sent by the base station is used to indicate a second bandwidth identifier, from which the transmission starts, from the second bandwidths forming the first bandwidth , and / or the spacing of the second bandwidth domains between the second bandwidths forming the first bandwidth, the terminal determines, based on the second bandwidth indicated by the identifier and the second width frequency domain spacing bandwidth between the second bandwidths that form the first bandwidth, some of the second bandwidths forming the first bandwidth with the same frequency spacing domain, and send the reference signal at the second bandwidths. One of the identifier of the second bandwidth, from which transmission begins, the second bandwidths that form the first bandwidth, and the second domain width spacing of
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42/78 bandwidth between the second bandwidths that form the first bandwidth can be predefined. Specifically, if the first bandwidth is 32 RBs and each second bandwidth is 4 RBs, the first bandwidth consists of eight second bandwidths (referring to frequency hopping positions 1, 2, 3, 4, 5 , 6, 7 and 8 in Figure 14). When the frequency hop rule indication signal sent by the base station is used to indicate that the identifier of the second bandwidth, from which the transmission begins, of the second bandwidths that form the first bandwidth is 1 and that the second bandwidth frequency domain spacing between the second bandwidths forming the first bandwidth is 2, the terminal sends the reference signal at the second bandwidths {1, 3, 5, 7) . In another example, when the frequency hop rule indication signal sent by the base station is used to indicate that the identifier of the second bandwidth, from which the transmission begins, of the second bandwidths that form the first width bandwidth is 2 and that the second bandwidth frequency domain spacing between the second bandwidths forming the first bandwidth is 2, the terminal sends the reference signal at the second bandwidths {2, 4, 6 , 8).
[0090] In another example, a correspondence between a frequency domain position of a reference signal and a time domain resource is F = (f (n) * tl) mod K, where f is a function of a position frequency domain of a reference signal and a position of a time domain resource, F is position identifiers
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43/78 of the second bandwidth forming the first bandwidth, n is an identifier determined based on a time domain position of the reference signal, for example, a time domain sequence, K is a total amount of second bandwidths that form the first bandwidth, and tl is the frequency domain spacing of the second bandwidth between the second bandwidths that form the first bandwidth. When t = 1 is configured, the terminal sends the reference signal at each second bandwidth forming the first bandwidth. When t = 2 is set, the terminal sends the reference signal in the second bandwidths in intervals of a second bandwidth in the second bandwidths that form the first bandwidth.
[0091] Optionally, when the frequency hop rule indication signal sent by the base station is used to indicate the sequence spacing of the second bandwidths that form the first bandwidth, the terminal determines the frequency domain position the second bandwidth based on the time domain interval and the correspondence between the frequency domain position of the reference signal and the time domain resource. For example, a correspondence between a frequency domain position of a reference signal and a time domain resource is F = (f (n * t2)) mod K, where f is a function of a frequency domain position of a reference signal and a position of a time domain resource, F is position identifiers of the second bandwidth forming the first bandwidth, n is an identifier
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44/78 determined based on a time domain position of the reference signal, for example, a time domain sequence, K is a total amount of second bandwidths forming the first bandwidth, and t2 is the spacing of the second bandwidths that make up the first bandwidth. When t2 = 1 is configured, the terminal sends the reference signal at each second bandwidth forming the first bandwidth. When t2 = 2 is configured, the terminal sends the reference signal in the second bandwidths, of the second bandwidths forming the first bandwidth, in intervals of a second bandwidth in an order of sending the second widths of band that is determined based on the correspondence between the frequency domain position of the reference signal and the time domain resource.
[0092] In an implementation, the base station 110 can also configure a number of periods in which terminal 120 transmits the reference signal in a frequency domain unit. The number of periods represents a number of times that terminal 120 completes sending the reference signal across an entire frequency domain unit in the frequency domain unit. For example, if terminal 120 supports two frequency domain units, a number of periods for one frequency domain unit can be set to 3, and a number of periods for the other frequency domain unit is 1. Thus , terminal 120 transmits the reference signal in the frequency domain unit in the frequency domain unit three times and transmits the
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45/78 reference on the other frequency domain unit only once.
[0093] The maximum bandwidth of the reference signal in the frequency domain unit is a maximum bandwidth that needs to be measured by transmitting the reference signal in the frequency domain unit. For example, it is assumed that a bandwidth of frequency domain unit 202 in Figure 2 is 100 RBs, and a maximum bandwidth that needs to be measured using the reference signal is 96 RBs. In the frequency domain unit, the reference signal needs to be transmitted only at the maximum bandwidth of the reference signal, namely the 96 RBs bandwidth.
[0094] A subcarrier position in which the reference signal is sent in the frequency domain unit is determined. Different terminals 120 can send reference signals in the same subframe and the same set of RB. Different terminals 120 use different subcarriers in the RB. A time repetition factor (timedomain RePetition Factor, RPF) can be used to indicate the density of the subcarrier when the reference signal is transmitted in the frequency domain. An RPF value is a natural number. For example, if the RPF value is 4, it indicates that one subcarrier out of four subcarriers is used to transmit the reference signal. In other words, at the same time, four different terminals 120 can occupy one of the four subcarriers to transmit the reference signal. The position of the subcarrier of the reference signal in this mode is used to notify terminal 120 of a subcarrier to transmit the
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46/78 reference.
[0095] Referring to Figure 4, 401 in the figure is a frequency domain bandwidth, and an RPF of the frequency domain bandwidth is 2. In other words, one subcarrier in every two subcarriers is used by terminal 120 to transmit the reference signal. A blank block portion indicates an available subcarrier to another terminal 120 for transmitting the reference signal. Likewise, an RPF value of a bandwidth indicated by 402 in the figure is 4. In other words, one subcarrier in every four subcarriers is used by terminal 120 to transmit the reference signal. A subcarrier position in which terminal 120 sends the reference signal and which is sent by base station 110 indicates a subcarrier position in a frequency band, so that terminal 120 can transmit the reference signal in the subcarrier position.
[0096] Base station 110 can configure a frequency hopping bandwidth (one bandwidth for each hop) of the reference signal, a frequency hopping start position, a frequency hopping period, a cell level symbol and an RPF for each frequency domain unit or part of the frequency domain unit of terminal 120. The reference signal configuration information can be used to configure the reference signal transmission in a unit frequency domain, and can be used as a reference to obtain reference signal configuration information for another frequency domain unit. To be specific, the signal configuration information
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47/78 reference of another frequency domain unit is obtained based on the configuration information of the reference signal. The frequency domain unit here can be used as a reference frequency domain unit. The reference frequency domain unit can be a real frequency domain unit, or it can be a virtual frequency domain unit. The reference frequency domain unit is used to obtain reference signal sending configuration information for frequency domain units supported by another terminal 120.
[0097] The reference signal sending configuration information includes a reference signal reference bandwidth, namely, a reference signal bandwidth at each frequency hopping time. Terminal 120 obtains the bandwidth of the reference signal from the frequency domain unit based on the reference bandwidth of the reference signal, the SCS of the frequency domain unit and the RPF value of the frequency domain unit. Specifically, for a frequency domain unit and a reference frequency domain unit, a small RPF value is required for a large subcarrier spacing. The RPF is inversely proportional to the subcarrier spacing. Therefore, the RPF value of the frequency domain unit can be obtained using the formula RPF = r_RPF * r_SCS / SCS. Here, r_RPF is the RPF value of the reference frequency domain unit and r_SCS is the subcarrier spacing of the reference frequency domain unit. After the RPF value of the frequency domain unit is obtained based on the
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48/78 reference frequency domain unit, the bandwidth of the frequency domain unit reference signal can be obtained according to r_RB / r_RPF * RPF. In the formula, r_RB is the reference bandwidth of the reference signal in the reference frequency domain unit, r_RPF is an RPF value of the reference frequency domain unit and RPF is the RPF value of the reference frequency unit frequency.
[0098] Certainly, the bandwidth of the reference signal of the frequency domain unit should not be greater than the bandwidth of the frequency domain unit or the maximum bandwidth of the reference signal in the domain domain unit. frequency.
[0099] In an example, see Figure 5. In Figure 5, it is assumed that a frequency domain unit 501 is used as a reference frequency domain unit, a reference RPF is 2, a reference SCS ( Subcarrier Spacing, SCS) is 120 kHz and a reference frequency jump bandwidth is 8 RBs. The configuration information for sending the reference signal from a frequency domain unit 502 is calculated according to the previous formula. First, an SCS of the frequency domain unit 502 is 60 kHz, to determine that an RPF of the frequency domain unit 502 is 4. Then, that a frequency hop bandwidth of the frequency domain unit 502 is 16 RBs can be determined according to the formula r_RB / r_RPF * RPF. Similarly, the reference signal sending configuration information from a frequency domain unit 503 can be calculated.
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49/78
[00100] The reference signal sending configuration information includes an indication of a reference correspondence between the time domain resource and the frequency domain position of the reference signal. Terminal 120 determines the correspondence between the time domain resource and the frequency domain position of the reference signal on the frequency domain unit based on the reference correspondence between the time domain resource and the frequency domain position. of the reference signal. Alternatively, terminal 120 determines the correspondence between the time domain resource and the frequency domain position of the reference signal on the frequency domain unit based on the bandwidth of the reference signal on the frequency domain unit and the reference correspondence between the time domain resource and the domain position frequency of the reference signal. In one example, the frequency jump start position is a frequency domain position from which the frequency jump is performed on the frequency domain unit. The frequency jump starting position of the frequency domain unit can be obtained by calculating based on an initial reference value of the reference frequency domain unit and a relationship between the frequency hop bandwidth of the frequency domain unit. frequency domain and the reference frequency hop bandwidth of the reference frequency domain unit. Referring to Figure 6, if a frequency hop bandwidth of a frequency domain unit 601 is 16 RBs, and a frequency hop bandwidth of a frequency domain unit
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50/78 reference frequency 603 is 4 RBs, a ratio of the frequency hopping bandwidth of the frequency domain unit 601 to the frequency hopping bandwidth of the reference frequency domain unit 603 is 4. If the initial value is 5, 5/4 is rounded down to obtain the starting position of the frequency domain unit, namely, a frequency domain position whose frequency domain number is 1 in the figure. A frequency jump start position of a frequency domain unit 602 can be calculated in the same way.
[00101] In a scenario where the terminal 120 supports a plurality of frequency domain units, the reference signal is transmitted in different frequency domain units in the frequency hopping way. The reference signal is transmitted in a current frequency domain unit to which the frequency jump is performed to jump. After changing the frequency hop position from another frequency domain unit to the current frequency domain unit, the frequency domain position of the reference signal in the current frequency domain unit must be determined based on a time to send the reference signal in the plurality of frequency domain units supported by terminal 120 and a time to transmit the reference signal in the current frequency domain unit. Referring to Figure 7, for terminal 120, there are four frequency jump positions a, b, c and d on a frequency domain unit 702 and two frequency jump positions (unnumbered) on a frequency domain unit 701. In a first period
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51/78 frequency hopping in frequency domain unit 702 of terminal 120, an order of the frequency hopping positions is a, b, c and d. After the first frequency hopping period, the frequency hopping is performed to jump to the frequency domain unit 701 and then to the frequency domain unit 702 to transmit the reference signal in a second period. In the second frequency hopping period, a frequency hopping order in the second period is c, d, a, and b because the frequency domain unit 701 undergoes the hopping frequency twice.
[00102] In an implementation, alternatively, the base station 110 may not configure the frequency jump between the frequency domain units, in other words, the frequency jump is performed independently on each frequency domain unit. Base station 110 implements orthogonality between frequency domain units by configuring a total frequency hopping period and configuring different time domain offset values. This implementation requires that different frequency domain units have the same period. When frequency domain units require different amounts of hops, wasted resources can occur.
Mode 2
[00103] In addition to sending a reference signal periodically or aperiodically, a terminal 120 can also transmit the reference signal in a multi-shot manner. Compared to the periodic sending way, this way of sending the reference signal is more flexible (because the sending is triggered by a notification
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52/78 dynamic signaling, for example, downlink control information (DCI) or a media access control element (MAC CE), and allows a total amount shorter shipping times (because an end of shipping is determined based on a dynamic signal notification or a pre-configured length). This way of sending the reference signal allows a greater amount of sending times when compared to a sending time in the periodic sending way. Therefore, the reference signal transmitted in the multi-shot manner can be used for frequency hop measurement of a specified bandwidth, to obtain a measurement result for the specified bandwidth. The reference signal transmitted in the form of multi-intervals can be repeatedly sent in the same bandwidth using different transmission beams or repeatedly received in the same bandwidth using different reception beams, so that the base station 110 can measure the quality of the channel corresponding to different transmission beams or reception beams.
[00104] Referring to Figure 8, in step 801, a base station 110 sends an indication of a plurality of reference signal resources and first indication information to terminal 120. The indication of the plurality of reference signal resources includes information on the plurality of reference signal resources and grouping information on the plurality of reference signal resources. For example, the indication indicates that the plurality of reference signal resources belongs to a first
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53/78 group. The first indication information indicates an almost co-location relationship (Quasi co-located _r QCL) between antenna ports of a reference signal transmitted in the plurality of reference signal resources in the first group. The QCL ratio means that a parameter from one antenna port can be defined based on a parameter from another antenna port.
[00105] In step 802, terminal 120 sends a reference signal based on the first indication information and the indication of the plurality of reference signal resources.
[00106] A reference signal resource is a part of a resource in an interval. Information about a reference signal resource includes one or more types of the following: a reference signal mapping indication to a frequency-time resource, a reference signal period, a reference signal port and an indication of reference signal sequence. The reference signal mapping indication for the frequency-time resource includes at least one of the following: a reference signal bandwidth, an RPF indicating the frequency domain density of the reference signal and a position of the reference domain. initial frequency of the reference signal. The reference signal sequence indication includes a reference signal sequence root.
[00107] Information on the plurality of reference signal resources also includes a time shift between time frequency resources to which the reference signal is mapped. Time shift is a difference in time domain between a plurality of
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54/78 reference signal time domain.
[00108] For example, the QCL ratio may indicate that the reference signals corresponding to the antenna ports have the same parameter. The QCL ratio may further indicate that terminal 120 may determine, based on a parameter from one antenna port, a parameter from another antenna port that has a QCL relationship to the antenna port. The QCL ratio can also indicate that two antenna ports have the same parameter, or the QCL ratio indicates that a parameter difference between two antenna ports is less than a specific limit. The parameter can be at least one of a delay spread, a Doppler spread, a Doppler shift, an average delay, an average gain, an angle of arrival (AOA), an average AOA, an AOA spread, an angle of departure (Angle of Departure, AOD), an average angle of departure AOD, an AOD spread, a spatial correlation parameter of the receiving antenna, a transmitting beam, a receiving beam and a resource identifier. The beam includes at least one of the following: pre-coding, a weight sequence number and a beam sequence number. An azimuth can be a decomposition value in different dimensions or a combination of decomposition values in different dimensions. Antenna ports are antenna ports with different antenna port numbers and / or antenna ports that have the same antenna port number and are used to send or receive information on time resources and / or frequency resources and / or different code domain resources and / or antenna ports that have different antenna port numbers and that are used to send or receive information on
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55/78 different time resources and / or frequency resources and / or code domain resources. The resource identifier includes a channel state information reference signal identifier (CSI-RS) or a reference signal resource identifier, and is used to indicate a beam on a resource .
[00109] Specifically, in one example, the QCL ratio is at least one of the following: The same transmission beam is used for reference signals; different transmission beams are used for reference signals; the same receiving beam is used for reference signals; and different reception beams are used for reference signals. The transmission beam corresponds to the correlation between AOD / AOD propagation / AOD medium / final transmission in the QCL parameter. The reception beam corresponds to the AOA / AOA / AOA propagation / average reception end correlation in the QCL parameter.
[00110] The base station 110 sends to terminal 120 configuration information that is used to indicate a number of symbols (symbol) in a slot (slot) and a symbol that is used to transmit a reference signal in the slot. For example, a number of symbols that are used to transmit the reference signal in the range are k, and k = n or k <m. Here, k and m are natural numbers, m <n and n is a quantity of uplink transmission symbols in the interval. The message can be carried in RRC signaling or MAC CE signaling. For example, a range of values for a number of k symbols is {1, 2, 3, 4, n}. Optionally, when k is not
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56/78 equal to n, k can be represented as 2 to the power of an integer. For example, a range of k values is {1, 2, 4, n] or {1, 2, 4, 8, n}.
[00111] The configuration information may indicate one or more interval symbols. Different amounts of symbols are indicated for different types of intervals. A number of symbols used to transmit a reference signal indicate different sets of symbols for different types of intervals. The range type is determined based on a number of uplink and / or downlink symbols in a range, for example, an uplink only range, a range of 2 downlink symbols plus 11 uplink symbols, and a range of 11 downlink symbols plus 2 uplink symbols.
[00112] As shown in Figure 9, the plurality of reference signal resources belonging to the first group can be resources for transmitting a reference signal in a frequency domain unit. For example, for a frequency domain unit 901, an amount of frequency domain positions is 1 and an amount of repetition times is 4. For a frequency domain unit 902, an amount of frequency domain positions is 4 and a number of repetition times is 1. The first indication information includes a frequency hopping order, a number of repetition times and a sequence configuration of the plurality of reference signal resources. Base station 110 can trigger the configuration on the plurality of resources (resource groups) using the DCI. Certainly, the amount of time
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57/78 repetition may not be configured in the first indication information and is set to 1 by default.
[00113] In the implementation of Modality 2, the following can be supported: The reference signal is sent in a combination of reference signal resources with different relations between them.
Mode 3
[00114] A base station 110 sends a measurement resource, first configuration information and second configuration information to a terminal 120. The first configuration information determines a first set of resources. The second configuration information determines a corresponding receive feature. The second configuration information determines one or more resources in the first resource set. The first configuration information also indicates a relationship between at least one resource in the first set of resources and at least one measurement resource. This relationship is an almost co-location relationship over a specified spatial parameter. The first configuration information is related to a result reported by the UE. An identifier indicated by the first
information configuration is based on content reported by the EU.[00115] 0 link downward it is used like one example. At the management beam, the season base 110
sets up a downlink link CSI-RS measurement feature and sends a measurement signal to the UE using different beams. The UE measures a corresponding resource and reports a measurement result corresponding to base station 110. Base station 110 determines, based on the reported content,
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58/78 a beam used by a corresponding channel (a control channel or a data channel) and a beam used by a signal. Base station 110 uses the second configuration information to notify the UE, so that the UE determines a receive beam to be used based on an indication of the second configuration information. Indication signaling can be indicated using information about a QCL assumption. The QCL assumption means that the beam used by base station 110 to send the current channel and a transmission beam from a specified resource for measuring CSI-RS are QCL in an assumption about a spatial parameter. In other words, base station 110 sends the current channel or signal using the same beam as a transmission beam from a specified CSI-RS. Based on this information, the UE can receive the current channel or signal using an earlier receiving beam.
[00116] Since there may be a plurality of CSI-RS measurement features configured, distinguishing based on a quantity of features may cause overhead for an indication. For example, if 32 resources are configured for downlink scanning, 5 bits are required for an indication. To reduce overhead costs for referral, a small set of resources used for referral can be established. For example, if there are four elements in total in a defined resource set, two bits are used for the indication. In this way, overhead costs for referrals are reduced. The set can be established and updated using the first configuration information.
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[00117] The contents of the resource set are updated based on an EU report after each measurement period. A number of reports and report content may change each time the UE sends the reports. Base station 110 updates the feature set based on the number of reports and the content of the reports. In addition, gNB needs to send the updated information to the UE in time, using the first configuration information, to ensure that the gNB and the UE have a consistent understanding of the referral information. There is a specified relationship between the information indicated by the first configuration information and a report result. For example, if there are four parts of the report's content, the referral needs to use only 2 bits to determine one of the four parts of the report's content, to reduce overhead. If gNB finds that there is no necessary beam in the report's result, the feature set may not be updated.
[00118] Each indication identifier in the resource set is associated with a resource for the previous specified measurement. For example, the feature set is assumed to include four element flags {00, 01, 10, 11}. The first element 00 is associated with a beam in the previously specified measurement. After the current measurement and reporting, the base station 110 considers the quality of a beam b to be better than that of the beam a prior to. In this case, the base station 110 can update the beam associated with element 00 in the set. Base station 110 sends the first configuration information to update information, so that the UE can update information about
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60/78 of a beam associated with the UE resource pool. To be specific, the beam associated with element 00 is updated to b. Thus, when 00 is indicated for the next time, the UE understands that 00 is associated with beam b.
[00119] The set can be configured based on a channel. In other words, different sets are maintained for different channels. For example, a set is maintained for each channel in a PDCCH / PDSCH / PUCCH / PUSCH. A control channel can correspond to a relatively wide beam, and a data channel can correspond to a relatively narrow beam. Alternatively, a plurality of channels can share a set, and the set includes a wide and a narrow beam. Alternatively, a set can be maintained on the uplink and a set can be maintained on the downlink. If beam reciprocity exists, a set can be maintained on both the uplink and downlink. Beams associated with flag elements in the set can have different relationships. For example, two beams corresponding to element 00 and element 01 can have a relatively small correlation. In this way, the robust beam transmission can be better implemented. When communication is interrupted because one beam is blocked, the other beam is used for communication recovery.
[00120] The method can also be applied on an uplink. In uplink transmission, resource measurement is performed by configuring an SRS on the uplink. The UE sends a measurement signal to the base station 110, and the base station 110 notifies the UE of a transmission beam to be used. For example, a beam of
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61/78 PUCCH / PUSCH transmission and a beam to send SRS previously are QCL with respect to a spatial parameter. Alternatively, in this case, a resource pool can be maintained for base station 110 and the UE. Each beam corresponding to an element in the feature set and a beam from a specified measurement feature is QCL. Each indication needs to indicate only one element specified in the indication set.
[00121] In an implementation, terminal 110 receives the first configuration information sent by base station 110. The first configuration information is used to determine a first resource or a set of first resources to transmit a first signal. Terminal 110 receives the second configuration information sent by base station 110. The second configuration information is used to indicate a second resource or a set of second resources to transmit a second signal. Base station 110 sends third configuration information which is used to indicate that the second signal and the first signal have an association reference signal feature. The association reference signal feature is that a first reference signal port and a second reference signal port have a QCL relationship, or have the same spatial resource, or corresponding uplink and downlink spatial resources. . Terminal 110 sends or receives the second reference signal based on the first reference signal and the association's reference signal resource. The spatial resource includes at least one of the following: an angle of arrival (Angle of arrival, AOA), an average AOA, an AOA spread, an angle of departure (Angle of arrival, AOA)
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62/78 of departure, AOD), an average AOD departure angle, an AOD spread, a spatial correlation parameter of the receiving antenna, a transmitting beam and a receiving beam. The QCL relationship means that the same parameter exists in reference signals corresponding to antenna ports, or the QCL relationship means that a user can determine, based on a parameter from one antenna port, a parameter from another antenna port having the QCL ratio to the antenna port, or the QCL ratio means that two antenna ports have the same parameter, or the QCL ratio means that a difference between the parameters of two antenna ports is less than a specified threshold. The parameter can be at least one of a delay spread, a Doppler spread, a Doppler shift, an average delay, an average gain, an Angle of arrival, AOA, an average AOA, an AOA spread, an departure angle (Angle of Departure, AOD), an average AOD departure angle, an AOD spread, a reception antenna spatial correlation parameter, a transmit beam, a receive beam and a resource identifier. The beam includes at least one of the following: precoding, a weight sequence number and a beam sequence number. An azimuth can be a decomposition value in different dimensions or a combination of decomposition values in different dimensions. Antenna ports are antenna ports with different antenna port numbers, and / or antenna ports that have the same antenna port number and are used to transmit or receive information over different time resources and / or frequency resources and / or code domain resources, and / or ports
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63/78 antennas that have different antenna port numbers and that are used to transmit or receive information at different time resources and / or frequency resources and / or code domain resources. The resource identifier includes a Channel State Information Reference Signal (CSI-RS) resource identifier or an SRS resource identifier, and is used to indicate a beam on a resource.
[00122] The first resource also includes at least one of the following: a port, a time domain resource, a frequency domain resource and a code domain resource of the first reference signal. The second resource further includes at least one of the following: a port, a time domain resource, a frequency domain resource and a code domain resource of the second reference signal.
[00123] The first reference signal can be a first uplink reference signal and / or a first downlink reference signal. The first uplink reference signal includes at least one of the following: an audible reference signal, a physical layer random access channel, a preamble sequence and an uplink demodulation reference signal. The first downlink reference signal includes at least one of the following: a primary synchronization signal, a secondary synchronization signal, a demodulation reference signal, a channel status reference signal, a reference signal mobility and a beam reference signal.
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[00124] Optionally, a candidate set of first reference signals may include one or more types of reference signals in the first uplink reference signals, or one or more types of reference signals in the first downlink reference signals, or one or more types of reference signals in the first reference uplink signals and one or more types of reference signals in the first downlink reference signals. For example, the candidate set of first benchmarks can include an SRS resource or include an SRS resource and a PRACH resource. In another example, the candidate set of first reference signals includes a CSI-RS resource, or includes a CSI-RS resource and a synchronization signal resource. In another example, the candidate set of first reference signals includes an SRS resource and a CSI-RS resource. The second reference signal can be a second uplink reference signal and / or a second downlink reference signal. The second uplink reference signal includes at least one of the following: an audible reference signal, a physical layer random access channel, a preamble sequence and an uplink demodulation reference signal. The second downlink reference signal includes at least one of the following: a primary synchronization signal, a secondary synchronization signal, a demodulation reference signal, a channel status information reference signal, a reference signal mobility and a beam reference signal.
[00125] Specifically, the following
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65/78 implementations can be included. Scenario 1: If the first reference signal is the first uplink reference signal, and the second reference signal is the second uplink reference signal, when the third configuration information indicates that a QCL relationship between the first reference signal and the second reference signal includes the same AOD, or the same spatial resource includes the same AOD, the first reference signal and the second reference signal are considered to correspond to the same transmission beam at one end of the user. For example, if the first reference signal and the second reference signal are SRSs, the user determines, based on the third configuration information, that the two reference signals correspond to the same transmission beam at the user's end.
[00126] Scenario 2: If the first reference signal is the first uplink reference signal and the second reference signal is the second uplink reference signal, when the third configuration information indicates that a QCL relationship between the first reference signal and the second reference signal include the same AOA, or the same spatial resource includes the same AOA, the first reference signal and the second reference signal are considered to correspond to the same receiving beam in a base station end. For example, if the first reference signal and the second reference signal are SRS, the user determines, based on the third configuration information, that the two reference signals correspond to the same receiving beam.
[00127] Scenario 3: If the first reference signal
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66/78 is the first uplink reference signal and the second reference signal is the second downlink reference signal, when the third configuration information indicates that a QCL relationship between the first reference signal and the second signal reference includes that the user determines an AOA of the second reference signal based on an AOD of the first reference signal, or spatial resources corresponding to the uplink and downlink include that an AOD of the first reference signal corresponds to an AOA of the second signal reference beam, a user end transmission beam of the first reference signal corresponds to a user end beam of the second reference signal. For example, if the first reference signal is an SRS, and the second reference signal is a CSI-RS, the user determines, based on the third configuration information, that a transmission beam from the SRS corresponds to a receiving beam. of the CSI-RS.
[00128] Scenario 4: If the first reference signal is the first uplink reference signal and the second reference signal is the second downlink reference signal, when the third configuration information indicates that a QCL relationship between the first reference signal and the second reference signal include that the user determines an AOD of the second reference signal based on an AOA of the first reference signal, or spatial resources corresponding to the uplink and
downlink include what an AOA from first sign in reference stands for one AOD of second sign in reference, it is considered what one bundle receiving gives
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67/78 base station end of the first reference signal corresponds to a transmission beam from the base station end of the second reference signal. For example, if the first reference signal is an SRS, and the second reference signal is a CSI-RS, the user determines, based on the third configuration information, that an SRS receiving beam corresponds to a transmission beam. of the CSI-RS.
[00129] Scenario 5: If the first reference signal is the first downlink reference signal and the second reference signal is the second uplink reference signal, when the third configuration information indicates that a QCL relationship between the first reference signal and the second reference signal the user determines an AOA of the second reference signal based on an AOD of the first reference signal, or spatial resources corresponding to the uplink and downlink include that an AOD of the first reference signal corresponds to an AOA of the second reference signal, a transmission beam from the base station end of the first reference signal is considered to correspond to a reception beam from the base station end of the second reference signal. For example, if the first reference signal is a CSI-RS, and the second reference signal is an SRS, the user determines, based on the third configuration information, that a transmission beam from the CSI-RS corresponds to a beam of the SRS reception.
[00130] Scenario 6: If the first reference signal is the first downlink reference signal and the second reference signal is the second uplink reference signal, when the third information
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68/78 configuration indicates that a QCL relationship between the first reference signal and the second reference signal includes that the user determines an AOD of the second reference signal based on an AOA of the first reference signal, or spatial resources corresponding to the link upward and
downlink include what an AOA from first sign in reference stands for one AOD of second sign in reference, it is considered what one bundle receiving in
user end of the first reference signal corresponds to a transmission beam of user end of the second reference signal. For example, if the first reference signal is a CSI-RS, and the second reference signal is an SRS, the user determines, based on the third configuration information, that a CSI-RS receiving beam corresponds to a beam of the SRS transmission.
[00131] Scenario 7: If the first reference signal is the first downlink reference signal and the second reference signal is the second downlink reference signal, when the third configuration information indicates that a QCL relationship between the first reference signal and the second AOD reference signal, or the same spatial resource includes the same AOD, the first reference signal and the second reference signal are considered to correspond to the same transmission beam at one end of the station base. For example, if the first reference signal and the second reference signal are CSI-RSs, the user determines, based on the third configuration information, that the two reference signals correspond to the same transmission beam at the base station end.
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[00132] Scenario 8: If the first reference signal is the first downlink reference signal and the second reference signal is the second downlink reference signal, when the third configuration information indicates that a QCL relationship between the first reference signal and the second AOA reference signal, or the same spatial resource includes the same AOA, the first reference signal and the second reference signal are considered to correspond to the same reception beam at one end of the user . For example, if the first reference signal and the second reference signal are CSI-RSs, the user determines, based on the third configuration information, that the two reference signals correspond to the same receiving beam.
[00133] In an implementation, the first reference signal can be sent before the third configuration information, or the third configuration information can be sent before the first reference signal. If the third configuration information is sent before the first reference signal, the third configuration information is used to indicate a correspondence between resources to send the first reference signal and the second reference signal. Specifically, the third configuration information is used to indicate a match between a first feature and a second feature, a match between a first feature set and a second feature, a match between a first feature and a second feature set, or a correspondence between a first set of resources and a second set of resources. In this case, the third
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70/78 configuration information includes an identifier of the first resource and an identifier of the second resource, or an identifier in a candidate set of first resources and an identifier of the second resource, or an identifier of the first resource and an identifier in a candidate set of second resources, or an identifier in a candidate set of first resources and an identifier in a candidate set of second resources.
[00134] In an implementation, the candidate set of first resources includes one or more first resources configured by the base station and / or reported by the user. The candidate set of second resources includes one or more second resources configured by the base station and / or reported by the user.
[00135] In an implementation, the first reference signal is the first downlink reference signal and the ports of the first reference signals in the first reference signal resources in a set of first reference signal resources have a relation of QCL or have the same spatial resource. In addition, the second reference signal is the second uplink reference signal and the ports of the second reference signals in the second reference signal resources in a set of second reference signal resources have a QCL relationship or have a same spatial resource. A parameter in the QCL interface includes an AOD, or the spatial resource includes an AOD. In this case, the ports of the second reference signals in the plurality of second reference signal resources and a port of the first reference signal in a first reference signal resource have
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71/78 a QCL relationship or corresponding spatial relationships that correspond to the uplink and downlink. For example, the AOD of the ports of the second reference signal in all the resources of the second reference signal correspond to an AOA of a port of the first reference signal in a first reference signal resource. The user measures and selects the first reference signal resource based on the first reference signal received on the downlink. For example, if the first reference signal is a CSI-RS and the second reference signal is an SRS, the user selects a receiving beam from a CSI-RS based on a measurement state of the CSI-RS and uses a beam of transmission corresponding to the selected receiving beam of the CSI-RS to execute the sending of SRS on all SRS resources.
[00136] In an implementation, the first reference signal is the first uplink reference signal, and the ports of the first reference signals in the first reference signal resources in a set of first reference signal resources have a relationship of QCL or have the same spatial resource. In addition, the second reference signal is the second downlink reference signal and the ports of the second reference signals on the secondary reference signal resources in a set of second reference signal resources have a QCL relationship or have a same spatial resource. A parameter in the QCL interface includes an AOD, or the spatial resource includes an AOD. In this case, the ports of the second reference signals in the plurality of second resources of the second reference signal and a port of the
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72/78 first reference signal in a first reference signal resource has a QCL relationship or corresponding spatial relationships that correspond to uplink and downlink. For example, the AOD of the ports of the second reference signals in all second reference signal resources correspond to an AOA of a port of the first reference signal in a first reference signal resource. The base station measures and selects the first reference signal resource based on the first reference signal received on the uplink. For example, if the first reference signal is an SRS, and the second reference signal is a CSI-RS, the base station selects an SRS receive beam based on an SRS measurement state, and uses a transmit beam corresponding to the selected receiving beam of the SRS to perform the sending of the CSI-RS in all CSI-RS resources.
[00137] AOA in the previous modality may include an average AOA and / or an AOA dispersion and / or an end-of-reception spatial correlation. The AOD in the previous modality may include a medium AOD and / or an AOD dispersion and / or a spatial correlation of end of transmission.
[00138] Referring to Figure 10, a base station 110 that executes the Method in Mode 1 and the method in Mode 2 includes a first processing unit 102 and a first transceiver unit 101. The first processing unit 102 is configured to generate a message such as a reference signal configuration message or a symbol configuration message in step 301 and step 801 carried out by base station 110. The first transceiver unit 101 is configured to send to a terminal
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120, the reference signal configuration message or the symbol configuration message generated by the first processing unit 102. Referring further to Figure 11, a terminal 120 includes a second transceiver unit 111 and a second processing unit 112. The second transceiver unit 111 is configured to receive a reference signal configuration message or a symbol configuration message from a base station 110. The second processing unit 112 is configured to send a reference signal based on the signal configuration message reference received by the second transceiver unit 111 at step 302 and step 802.
[00139] It should be understood that the division of the units of the previous communication device is merely division of logical functions. During the actual implementation, all or some of the units can be integrated into a physical entity, or they can be physically separated. In addition, the units can be implemented in a form of software invoked by a processing element or in a form of hardware only; or some units can be implemented in a form of software invoked by a processing element, and the other units can be implemented in a form of hardware. For example, the first processing unit 102 or the second processing unit 112 can be a separately arranged processing element, or it can be integrated into a base station chip 110 or a terminal 120 chip, for example, a band chip base. In addition, the first processing unit 102 or the second processing unit 112 can be stored in a base station memory 110 or a memory
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74/78 of terminal 120 in a program form, so that a processing element of base station 110 or a processing element of terminal 120 can invoke and execute functions of the processing unit. The implementation of another unit is similar to that of the processing unit. Terminal 120 can receive, using an antenna, information sent by base station 110. The information is processed by a radio frequency device and then sent to a base band device. The first and second transceiver units can receive / send, via an interface between the radio frequency device and the base band device, the information transmitted by the base station 110 or terminal 120. In addition, all or some of the units of the station base 110 or terminal 120 can be integrated, or can be implemented independently. The processing element described here can be an integrated circuit with signal processing capability. In an implementation process, the steps of the previous method or the previous units can be implemented using a hardware integrated logic in a processor element, or using an instruction in a software form.
[00140] For example, the first processing unit or the second processing unit can be one or more integrated circuits configured to implement the previous method, for example, one or more application specific integrated circuits (Application Specific Integrated Circuit, ASIC) or one or more microprocessors (Digital Signal Processor, DSP), or one or more arrays of field programmable ports (Field
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Programmable Gate Array, FPGA). In another example, when one of the preceding units is implemented in a way to program a program by a processing element, the processing element can be a baseband processor or a general purpose processor, such as a central processing unit {Central Processing Unit, CPU) or another processor that can invoke the program. In another example, the units can be integrated and implemented in the form of a system on a chip (system-on-a-chip, SOC).
[00141] Referring to Figure 12, a base station 110 includes a first transceiver 121 and a first processor 122. The first processor 122 may be a general purpose processor, for example, but not limited to, a central processing unit {Central Processing Unit, CPU, CPU); or it can be a dedicated processor, for example but not limited to, baseband processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC) or an array of programmable ports field {Field Programmable Gate Array, FPGA). In addition, the first processor 122 may alternatively be a combination of a plurality of processors. Particularly, in the technical solutions provided in this embodiment of the present invention, the first processor 122 can be configured to perform, for example, steps performed by the first processing unit 102. The first processor 122 can be a processor specially designed to perform the steps and / or previous operations, or it may be a processor that
Petition 870190084365, of 08/28/2019, p. 88/109
76/78 performs the previous steps and / or operations, reading and executing an instruction stored in a memory.
[00142] The first transceiver 121 includes a transmitter and a receiver. The transmitter is configured to send a signal using at least one of a plurality of antennas. The receiver is configured to receive a signal using at least one of the plurality of antennas. In particular, in the technical solutions provided in this embodiment of the present invention, the first transceiver 121 can be configured specifically to perform, for example, functions of the first transceiver unit using the plurality of antennas.
[00143] Figure 13 is a structural diagram of a terminal 120. Terminal 120 includes a second processor 132 and a second transceiver 131. The second processor 132 may be a general-purpose processor, for example, but not limited to, a central processing unit (Central Processing Unit, CPU); or it can be a dedicated processor, for example, but not limited to, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC) or an array of field programmable ports (Field Programmable Gate Array, FPGA. In addition, the second processor 132 can alternatively be a combination of a plurality of processors. Particularly, in the technical solutions provided in this embodiment of the present invention, the second processor 132 can be configured to run, for example , steps and functions that are performed by the second processing unit. The second processor 132 can be
Petition 870190084365, of 08/28/2019, p. 89/109
77/78 a processor specially designed to perform the previous steps and / or operations, or it can be a processor that performs the previous steps and / or operations by reading and executing an instruction stored in memory.
[00144] The second transceiver 131 includes a transmitter and a receiver. The transmitter is configured to send a signal using at least one of a plurality of antennas. The receiver is configured to receive a signal using at least one of the plurality of antennas. In particular, in the technical solutions provided in this embodiment of the present invention, the second transceiver 131 can be configured specifically to perform using the plurality of antennas, for example, steps and functions that are performed by the second transceiver unit 111.
[00145] Technicians in the subject can understand that all or some of the steps of the method modalities can be implemented by a program that instructs the relevant hardware. The program can be stored on a computer-readable storage medium. When the program is executed, the steps of the method modalities are performed. The foregoing storage medium includes any medium that can store program code, such as a ROM, RAM, magnetic disk or optical disk.
[00146] Finally, it should be noted that the foregoing embodiments are merely intended to describe the technical solutions of the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the previous modalities, those skilled in the art should understand that they can still make modifications to the technical solutions described in the modalities
Petition 870190084365, of 08/28/2019, p. 90/109
78/78 or make substitutions equivalent to some of its technical relationships, without departing from the spirit and scope of the technical solutions of the modalities of the present invention.

权利要求:
Claims (23)
[1]
1. Method of sending a reference signal, characterized by comprising:
receive, by a terminal, configuration information for sending a signal from a base station, where the configuration information for sending a signal signals the terminal to transmit a reference signal in one or more domain units frequency, and one or more frequency domain units and another frequency domain unit forms a part of a transmission bandwidth supported by the base station; and sending, through the terminal, the reference signal in one or more frequency domain units to the base station based on the reference signal sending configuration information
[2]
2. Reference signal sending apparatus, characterized by comprising a processing unit and a transceiver unit, in which the transceiver unit receives a configuration signal for sending the reference signal from a base station, in which the information of Reference signal sending configuration instructs the terminal to transmit a reference signal in one or more frequency domain units, and to one or more frequency domain units and another frequency domain unit form part of a width of transmission band supported by the base station; and the processing unit instructs, based on the configuration information for sending the reference signal,
Petition 870190084365, of 08/28/2019, p. 92/109
2/10 the transceiver unit for sending the reference signal in one or more frequency domain units to the base station.
[3]
3. Method of sending reference signal configuration information, characterized by comprising:
generating, by a base station, reference signal sending configuration information, wherein the reference signal sending configuration information instructs a terminal to transmit a reference signal in one or more frequency domain units, and one or more frequency domain units and another frequency domain unit form part of a transmission bandwidth supported by the base station; and sending the reference signal configuration information to the terminal via the base station.
[4]
4. Apparatus for sending reference signal configuration information, characterized in that it comprises a processing unit and a transceiver unit, in which the processing unit generates reference signal configuration information, in which the configuration information of reference signal sending instructs a terminal to transmit a reference signal in one or more frequency domain units, and to one or more frequency domain units and another frequency domain unit form part of a frequency bandwidth. transmission supported by a base station; and the transceiver unit sends the configuration information for sending the reference signal to the terminal.
[5]
5. Method according to claim 1 or 3, or apparatus according to claim 2 or 4, characterized
Petition 870190084365, of 08/28/2019, p. 93/109
3/10 by the fact that the reference signal configuration information comprises an indication of a frequency-time resource used to transmit the reference signal, and the reference signal configuration information comprises a first parameter which is used to indicate an order in which the terminal transmits the reference signal in the plurality of frequency domain units.
[6]
6. Method according to claim 1, characterized by the fact that an order in which the terminal sends the reference signal in the plurality of frequency domain units is predefined.
[7]
Apparatus according to claim 2, characterized by the fact that an order in which the processing unit instructs the transceiver unit to send the reference signal in the plurality of frequency domain units is predefined.
[8]
Method or apparatus according to any one of claims 1 to 7, characterized in that the reference signal sending configuration information comprises a second parameter which is used to indicate a correspondence between a unit of time in which the terminal sends the reference signal and a frequency domain unit in which the terminal sends the reference signal.
[9]
9. Method or apparatus according to any one of claims 1 to 8, characterized in that the reference signal configuration information comprises a grouping parameter that is used to instruct the terminal to group the plurality of units frequency domain, and reference signals can be
Petition 870190084365, of 08/28/2019, p. 94/109
4/10 sent simultaneously in different groups of frequency domain units
[10]
10. Method or apparatus according to claims 1 to 9, characterized by the fact that the reference signal configuration information comprises one or more types of the following information: a reference signal transmission period in a domain unit frequency, a maximum reference signal bandwidth in the frequency domain unit, a starting subcarrier position in which the reference signal is sent in the frequency domain unit, and a correspondence between a time domain resource and a frequency domain position of the reference signal in the frequency domain unit
[11]
11. Method or apparatus according to any one of claims 1 to 10, characterized in that the reference signal configuration information comprises a reference period indication parameter of the reference signal, and the terminal or unit processing time determines the period of transmission of the reference signal in a frequency domain unit based on the number of frequency domain units supported by the terminal or processing unit, a frequency domain unit bandwidth or a width bandwidth that is used to transmit the reference signal in the frequency domain unit, and a frequency hop bandwidth for each hop.
[12]
12. Method or apparatus according to any one of claims 1 to 11, characterized by the fact that the reference signal sending configuration information
Petition 870190084365, of 08/28/2019, p. 95/109
5/10 comprises a reference bandwidth indication of the reference signal, and the terminal or processing unit obtains the reference signal bandwidth in the frequency domain unit based on the indication of the reference bandwidth of reference signal, a subcarrier spacing of the frequency domain unit, and density of the reference signal frequency domain in the frequency domain unit.
[13]
13. Method or apparatus according to any one of claims 1 to 12, characterized by the fact that the reference signal sending configuration information comprises an indication of reference departure subcarrier of the reference signal, and the indication subcarrier Reference start reference signal is used to indicate a starting subcarrier to send the reference signal.
[14]
14. Method or apparatus according to any one of claims 1 to 13, characterized by the fact that identifiers of starting subcarriers of the reference signal in the plurality of frequency domain units are the same.
[15]
15. Method or apparatus according to any one of claims 1 to 14, characterized in that the reference signal configuration information comprises an indication of a reference match between a time domain resource and a position frequency domain of the reference signal; and the terminal or processing unit determines the correspondence between the time domain resource and the frequency domain position of the reference signal in the domain unit
Petition 870190084365, of 08/28/2019, p. 96/109
6/10 frequency based on the reference correspondence between the time domain resource and the frequency domain position of the reference signal, the terminal or the processing unit determines the correspondence between the time domain resource and the position frequency domain of the reference signal in the frequency domain unit based on the bandwidth of the reference signal in the frequency domain unit and the reference correspondence between the time domain resource and the frequency domain position of the reference signal.
[16]
16. Method or apparatus according to any one of claims 1 to 15, characterized in that the position of the frequency domain of the reference signal in the frequency domain unit is determined based on a time of transmission of the signal from reference in the plurality of frequency domain units supported by the terminal.
[17]
17. Reference signal sending method, characterized by comprising:
receive, by a terminal, configuration information for sending the reference signal from a base station, where the configuration information for sending the reference signal instructs the terminal to transmit a reference signal in at least one domain unit frequency, the frequency domain unit is a part of a transmission bandwidth supported by the base station, the reference signal sending configuration information comprises: a first bandwidth that is used to indicate a bandwidth used to transmit the reference signal on the frequency domain unit, and a second bandwidth that is used to indicate a
Petition 870190084365, of 08/28/2019, p. 97/109
7/10 bandwidth to send the reference signal in a symbol, and the first bandwidth consists of a plurality of second bandwidths; and determining, through the terminal based on a predefined rule or referral information from the base station, to select a few second bandwidths in a reference signal period to send the reference signal.
[18]
18. Reference signal sending apparatus, characterized by comprising a processing unit and a transceiver unit, in which the transceiver unit receives configuration information for sending the reference signal from a base station, in which the configuration information reference signal sending instructs a terminal to transmit a reference signal on at least one frequency domain unit, the frequency domain unit is a part of a transmission bandwidth supported by the base station, the configuration information reference signal sending comprises: a first bandwidth which is used to indicate a bandwidth used to transmit the reference signal in the frequency domain unit, and a second bandwidth which is used to indicate a frequency bandwidth. band to send the reference signal in a symbol, and the first bandwidth consists of a plurality of second bandwidths The; and the processing unit determines, based on a predefined rule or indication information from the base station, to select a few second bandwidths in a reference signal period to send the reference signal.
Petition 870190084365, of 08/28/2019, p. 98/109
8/10
[19]
19. Method of sending reference signal configuration information, characterized by comprising:
generate, by a base station, reference signal sending configuration information which is used to instruct a terminal to transmit a reference signal on at least one frequency domain unit, of which the frequency domain unit is a part of a transmission bandwidth supported by the base station, the reference signal sending configuration information comprises: a first bandwidth that is used to indicate a bandwidth used to transmit the reference signal at the domain unit of frequency, a second bandwidth that is used to indicate a bandwidth to send the reference signal in a symbol, and indication information used to instruct the terminal to transmit the reference signal in some second bandwidths, and the first bandwidth consists of a plurality of second bandwidths; and send the reference signal configuration information to the terminal via the base station.
[20]
20. Apparatus for sending reference signal configuration information, characterized by comprising a processing unit and a transceiver unit, in which the processing unit generates reference signal configuration information that is used to instruct a terminal to transmit a reference signal on at least one frequency domain unit, where the frequency domain unit is a part of a transmission bandwidth supported by
Petition 870190084365, of 08/28/2019, p. 99/109
9/10 a base station, the reference signal sending configuration information comprises: a first bandwidth that is used to indicate a bandwidth used to transmit the reference signal in the frequency domain unit, a second width bandwidth that is used to indicate a bandwidth to send the reference signal into a symbol, and indication information used to instruct the terminal to transmit the reference signal in a few second bandwidths, and the first bandwidth consists of a plurality of second bandwidths; and the transceiver unit sends the configuration information for sending the reference signal to the terminal.
[21]
21. Method or apparatus according to any one of claims 17 to 20, characterized in that the plurality of second bandwidths used to send the reference signal are located in different symbols.
[22]
22. Method or apparatus according to claim 17 or 18, characterized by the fact that the predefined rule is that when the currently transmitted reference signal is used for beam scanning, or a sub-carrier spacing of the transmitted reference signal currently it is greater than a reference sub carrier spacing or a sub carrier spacing that is PUSCH transmission performed by the terminal in the frequency domain unit and that is configured by the base station, the terminal determines to send the reference signal in a period of reference signal in some of the plurality of second bandwidths forming the first bandwidth.
Petition 870190084365, of 08/28/2019, p. 100/109
10/10
[23]
23. Method or apparatus according to any one of claims 17 to 20, characterized by the fact that the indication information is at least of the following types of information: (1) indication information comprising identifiers of some second bandwidths, used to instruct the terminal to send the reference signal at the second bandwidths; (2) indication information comprising index information to obtain identifiers for some second bandwidths, used to instruct the terminal to send the reference signal at the second bandwidths; (3) indication information comprising a frequency domain spacing, used to instruct the terminal to transmit the reference signal in the plurality of second bandwidths whose spacing is the frequency domain spacing, in which the second bandwidths that correspond to the frequency domain spacing comprise a predefined start frequency domain position or a start frequency domain position indicated by the base station; and (4) indication information comprising a sequence spacing of the second bandwidths, used to instruct the terminal to determine, based on the sequence spacing, a few second bandwidths for sending the reference signal.

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法律状态:
2021-10-19| B350| Update of information on the portal [chapter 15.35 patent gazette]|

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CN201710459768.9A|CN108632008A|2017-03-24|2017-06-16|Reference signal transmission technology|

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PCT/CN2018/080398|WO2018171793A1|2017-03-24|2018-03-24|Reference signal transmission technology|

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