signal transmission method and apparatus

专利摘要:
embodiments of the present invention provide a method of signal transmission. user equipment receives a first signal from a wireless network device; and the user equipment determines spatial information for a second signal to be transmitted based on the first signal, and transmits the second signal to be transmitted by using the spatial information. an uplink transmission beam is determined by the use of related information from a downlink receiving beam, so that the eu can efficiently determine spatial information from an uplink signal to be transmitted by the eu.
公开号:BR112019014060A2
申请号:R112019014060
申请日:2018-01-08
公开日:2020-02-04
发明作者:Ji Liuliu；Huang Yi；Li Yuanjie
申请人:Huawei Tech Co Ltd；
IPC主号:

专利说明:

“SIGNAL TRANSMISSION METHOD AND APPARATUS” FIELD OF TECHNIQUES [0001] This request refers to the field of communications technologies and, in particular, to a signal transmission method and apparatus.
BACKGROUND [0002] Figure 1 is a structural diagram of a communications system. The communications system includes a plurality of wireless network devices (e.g., base stations) and a plurality of user equipment (UE) within the coverage of each network device.
[0003] The multiple multiple inputs massive outputs (Massive Multiple Input Multiple Output, Massive MIMO) can additionally increase a system capacity using more spatial degrees of freedom and, therefore, become a key technology in a technology of access by new radio (New Radio access technology, NR).
[0004] In NR, beam-based transmission becomes a focus. A high resolution beam can be formed into NR based on a configuration of a massive antenna array.
[0005] In current research, a problem to be solved urgently is the determination of an uplink transmission beam (specifically, spatial information or direction information of an uplink signal) based on which UE transmits an uplink signal in uplink transmission.
SUMMARY [0006] The modalities of the present invention provide a method and apparatus for signal transmission, so that the UE efficiently determines spatial information of an uplink signal to be transmitted by the UE.
[0007] According to a first aspect, an embodiment of the present invention provides a method of signal transmission, which includes:
receiving, by means of user equipment, a first signal from a first wireless network device; and determine, through the user equipment, information
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2/75 spatial of a second signal to be transmitted, based on the first signal, and to transmit the second signal to be transmitted using spatial information.
[0008] Optionally, the user equipment receives first indication information from a second wireless network device, in which the first indication information is used to indicate that a quasi-colocalization relationship in relation to spatial information exists between the second signal and the first signal, and the second wireless network device is the same or different from the first wireless network device.
[0009] Optionally, the method additionally includes:
receive, through the user equipment, second indication information from a second wireless network device, in which the second indication information is used to indicate that the first signal serves as a reference for the spatial information of the second signal , and the second wireless device is the same or different from the first wireless device.
[0010] Optionally, determining, using user equipment, spatial information of a second signal to be transmitted, based on the first signal, includes:
determine, by means of user equipment, that the first signal is a reference signal for the spatial information of the second signal; and determining, using the user equipment, the spatial information of the second signal to be transmitted, based on the first signal.
[0011] Optionally, determining, through the user equipment, that the first signal is a reference signal for the spatial information of the second signal may include, specifically: determining, through the user equipment, that the first signal has a characteristic of the reference signal for the spatial information of the second signal.
[0012] Optionally, the first signal can include one or more signals, and the second signal or a signal associated with the second signal can include one or more signals.
[0013] According to a second aspect, an embodiment of the present invention provides a method of signal transmission, which includes:
transmit, through a first wireless network device, a
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3/75 first signal to user equipment; and receiving, via the first wireless network device, a second signal from the user equipment, where the first signal is a reference for spatial information of the second signal.
[0014] Optionally, the first wireless network device transmits the first indication information to the user equipment, where the first indication information is used to indicate that a quasi-colocalization relationship in relation to spatial information exists between the second sign and the first sign.
[0015] Optionally, a second wireless network device transmits first indication information to the user equipment, in which the first indication information is used to indicate that a quasi-colocalization relationship in relation to spatial information exists between the second sign and the first sign.
[0016] Optionally, the method additionally includes: transmitting, through the first wireless network device, second indication information to the user equipment, in which the second indication information is used to indicate that the first signal serves as the reference to the spatial information of the second signal; or transmit, via the second wireless network device, second indication information to the user equipment, where the second indication information is used to indicate that the first signal serves as the reference for the spatial information of the second signal.
[0017] Optionally, the fact that the first signal is a reference for spatial information of the second signal includes:
the first signal has a characteristic of a reference signal for the spatial information of the second signal.
[0018] With reference to the first aspect or the second aspect, optionally, the second wireless network device is a wireless network device that serves the user equipment, and the first wireless network device is the wireless network device service cord or a wireless network device other than the service wireless network device.
[0019] Optionally, the fact that the first indication information is used to indicate that a quasi-colocalization relationship
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4/75 in relation to spatial information exists between the second signal and the first signal includes:
the first referral information is used to indicate that a quasi-colocalization relationship to spatial information exists between second signal resource information and first signal resource information, and the resource information includes at least one of the identifier information resource, antenna port information, channel status information measurement definition identifier information, and process identifier information.
[0020] Optionally, the first signal includes a non-zero power reference signal. For example, the nonzero power reference signal, included in the first signal, is at least one of a nonzero power reference signal used to obtain channel status information, a nonzero power reference signal used for demodulation. and a nonzero power reference signal used for beam management.
[0021] Optionally, the second signal includes a reference signal. For example, the reference signal, included in the second signal, is at least one of a reference signal used for demodulation and a reference signal used for uplink channel measurement.
[0022] Optionally, the first indication information is included in a field used to indicate quasi-colocalization information; or the first indication information is included in downlink control information, and the downlink control information additionally includes information used to indicate information related to uplink programming; or the first indication information is included in a field used to indicate information related to uplink programming.
[0023] Optionally, the second indication information is included in the configuration information of the first signal. For example, the first signal configuration information includes at least one of the first signal channel state measurement definition field, a first signal process field, a resource field
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5/75 of the first signal, an antenna port information field of the first signal and a beam information field of the first signal.
[0024] Optionally, the second indication information includes several bits, the first signal corresponds to at least one among the several bits, and the at least one bit indicates that the first signal serves as the reference for the spatial information of the second signal. In that case, the second indication information can be included in the measurement status definition field of the first signal channel or the process field of the first signal.
[0025] Optionally, the second indication information is a field with a Boolean value, or the second indication information exists only when used to indicate that the first signal serves as the reference for the spatial information of the second signal. In that case, the second indication information can be included in at least one of the first signal's resource field, the first signal's antenna port information field and the first signal's beam information field.
[0026] Optionally, the characteristic of the reference signal for the spatial information of the second signal includes resource information for the signal, and the resource information includes at least one of the antenna port information, resource identifier information, measurement definition identifier of channel status information and process identifier information, and the signal includes at least one of a downlink control signal, a nonzero power reference signal and a signal used for beam management .
[0027] Optionally, the spatial information of the second signal includes a transmission angle of the second signal, and the transmission angle of the second signal is determined based on an angle of arrival of the first signal.
[0028] Optionally, the method additionally includes:
determine, by means of the user equipment, a transmission power of an uplink signal to be transmitted, based on a power received from the first signal; and transmit, through the user equipment, the uplink signal based on the transmission power, in which the link signal
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Ascending 6/75 includes the second signal and / or a signal associated with the second signal; and / or adjust, by means of the user equipment, an uplink transmission timing advance based on a variation of the first signal receiving time; and transmitting, via the user equipment, an uplink signal based on the adjusted uplink transmission timing advance, wherein the uplink signal includes the second signal and / or a signal associated with the second signal.
[0029] The signal associated with the second signal can be a signal that has a non-empty intersection between an antenna port of the signal and an antenna port of the second signal.
[0030] Optionally, the first signal may include one or more signals, and the second signal or the signal associated with the second signal may include one or more signals.
[0031] According to a third aspect, a signal transmission device is provided, additionally, in which the device can be user equipment or a chip in the user equipment, and includes a processor, a memory and a transceiver, in that the memory is configured to store an instruction, the processor is configured to execute the instruction stored in memory, to control the transceiver to receive and transmit signals, and when the processor executes the instruction stored in memory, the user equipment is configured to implement any method used by the user equipment described in the first aspect.
[0032] According to a fourth aspect, a signal transmission device is provided, additionally, in which the device can be a wireless network device or a chip in a wireless network device, and includes a processor, a memory and a transceiver, where the memory is configured to store an instruction, the processor is configured to execute the instruction stored in memory, to control the transceiver to receive and transmit signals, and when the processor executes the instruction stored in memory, the wireless network device is configured to deploy any method used by the first
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7/75 wireless network device or the second wireless network device described in the second aspect.
[0033] According to a fifth aspect, a signal transmission device is provided, additionally, in which the device includes some modules, configured to implement any method used by the previous user equipment. The specific modules can correspond to the steps of each method, and are not described again in this document.
[0034] According to a sixth aspect, a signal transmission device is additionally provided, in which the device includes some modules, configured to implant any method used by the first wireless network device or second wireless network device . The specific modules can correspond to the steps of each method, and are not described again in this document.
[0035] According to a seventh aspect, a computer storage media is additionally provided and is configured to store some instructions, in which when the instructions are executed, any method used by the user equipment or by the first or second device wireless network can be deployed.
[0036] According to an eighth aspect, a communications system is provided, additionally, in which the system includes the first wireless network device provided by the fourth aspect, and may additionally include the second wireless network device used in the second aspect, and may additionally include the user equipment provided by the third aspect.
[0037] According to a ninth aspect, a communications device is provided, additionally, in which the device has functions to implement actions of the first or second wireless network device or user equipment in the aspect of the foregoing method, and includes corresponding components (means) configured to perform steps or functions described in the aspect of the previous method. The steps or functions can be implemented by software or hardware, or implemented by a combination of hardware or software.
[0038] In a possible project, the communications device includes
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8/75 one or more processors and a transceiver unit. One or more processors are configured to assist the first or second wireless network device or user equipment in carrying out corresponding functions in the previous method, for example, determining spatial information of a second signal to be transmitted based on a first signal . The transceiver unit is configured to assist the first or second wireless network device or user equipment in communicating with another device and implementing a receive / transmit function, for example, receiving a first signal and transmitting a second signal, or transmit a first signal, and receive a second signal.
[0039] Optionally, the communications device can additionally include one or more memories. The memory is attached to the processor. The memory stores a program instruction and data required by the communications device. One or more memories can be integrated into the processor, or can be arranged separately from the processor. This is not limited in this order.
[0040] The communications device can be a base station, a TRP or user equipment (or it can be a terminal device). The transceiver unit can be a transceiver or a transceiver circuit.
[0041] The communications device can also be a communications chip. The transceiver unit can be an input / output circuit or a communications chip interface.
[0042] According to the method, apparatus and system provided by the modalities of the present invention, an uplink transmission beam is determined using related information from a downlink receiving beam, so that the UE can determine, efficiently, spatial information of an uplink signal to be transmitted by the UE.
[0043] For ease of understanding, some descriptions of related concepts in this application are provided for reference using an example, as shown below:
[0044] The 3rd Generation Partnership Project (3GPP) is a project dedicated to develop a wireless communications network. Typically, an organization related to 3GPP is called a 3GPP organization.
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9/75 [0045] A wireless communications network is a network that provides wireless communication functions. The wireless communications network can use different communications technologies, for example, Code Division Multiple Access (CDMA), Broadband Code Division Multiple Access (WCDMA), Time Division Multiple Access (TDMA), Access Frequency Division Multiple (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA) and Carrier Detection Multiple Access with Collision Prevention. Based on factors such as capacities, rates or delays from different networks, networks can be classified into 2G networks, 3G networks, 4G networks or future evolved networks, such as 5G networks. A typical 2G network includes a Global System for Mobile Communications (GSM) network or a general packet radio service (GPRS) network. A typical 3G network includes a Universal Mobile Telecommunications System (UMTS) network. A typical 4G network includes a Long Term Evolution (LTE) network. Sometimes the UMTS network can also be called a universal terrestrial radio access network (UTRAN). Sometimes the LTE network can also be called an evolved universal terrestrial radio access network (E-UTRAN). Based on different modes of resource allocation, networks can be classified into cellular communications networks and wireless local area networks (WLAN), where cellular communications networks are dominated by programming, and WLANs are dominated by contention . The previous 2G, 3G and 4G networks are all cellular communications networks. A person skilled in the art should know that the technical solutions provided by the modalities of the present invention can be applied essentially to a wireless communications network after 4G, for example, a 4.5G or 5G network, or another non-cellular communications network. For the sake of brevity, the wireless communications network can sometimes be called a network for short in the modalities of the present invention.
[0046] The cellular communications network is one among wireless communications networks. The cellular communications network uses a cellular wireless system mode to connect terminal devices to a network device using radio channels, and additionally deploys
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10/75 mutual communication between users in activities. A main feature of the cellular communications network is that a terminal is mobile and has automatic switching between cells and automatic roaming between local networks.
[0047] FDD: frequency division duplex, duplex by frequency division [0048] TDD: time division duplex, duplex by time division [0049] User equipment (English: user equipment, EU for short) is a terminal device , and it can be a mobile terminal device or it can be a non-mobile terminal device. The device is essentially configured to receive or transmit service data. User equipment can be distributed over a network. User equipment has different names on different networks, for example, a terminal, a mobile station, a subscriber unit, a station, a cell phone, a personal digital assistant, a wireless modem, a wireless communications device, a portable device, a laptop-type computer, a cordless phone, a local wireless circuit station, an in-vehicle terminal, an unmanned aerial vehicle, a smart home appliance, and an Internet of Things device. User equipment can communicate with one or more major networks through a radio access network (RAN for short) (an access part of a wireless network), for example, exchange voice and / or data with the radio access network.
[0050] A base station device (base station, BS), also called a base station, is a device implemented in the radio access network and configured to provide a wireless communication function. For example, on a 2G network, devices that provide base station functions include a wireless base transceiver station (base transceiver station, BTS for short) and a base station controller (base station controller, BSC as an abbreviation) abbreviation); on a 3G network, devices that provide base station functions include a NodeB (NodeB) and a radio network controller (radio network controller, RNC for short); on a 4G network, devices that provide base station functions include an evolved NodeB (evolved NodeB, eNB as
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Abbreviation 11/75); in a WLAN, a device that provides base station functions is an access point (access point, AP for short). Devices that provide base station functions on a new future 5G radio (New Radio, NR for short) include a more evolved NodB (gNB), a transmission and reception point (TRP), a transmission point, TP, a relay, and the like. The NodeB, TRP and TP can be devices that include a baseband processing part and a radio frequency part. The TRP and TP can be a radio unit (radio unit, Rll) or a remote radio unit (remote radio unit, RRU). TRP is a common name in NG, and TP is a common name in an LTE system.
[0051] A wireless device is a device that is located on a wireless communications network and can communicate wirelessly. The device can be a wireless network device, for example, a base station, or it can be user equipment, or it can be another network element.
[0052] A network side device is a device that is located on a wireless communications network and located on a network side, it can be a network element of an access network, for example, a base station or a controller (if available), or it can be a network element of a main network, or it can be another network element.
[0053] NR (new radio, new radio) is a new generation radio access network technology, and can be applied to a future evolved network, such as a 5G network.
[0054] A wireless local area network (WLAN for short) is a local area network that uses a radio wave as a data transmission medium, where a transmission distance is, in general, several tens of meters.
[0055] An access point (access point, AP for short) is connected to a wireless network, or can be connected to a device on a wired network. The AP can serve as an intermediate point, so that devices that are online in a wired or wireless mode can be interconnected and transmit data to each other.
[0056] RRC (radio resource control): radio resource control
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12/75 [0057] RRC processes layer 3 information from a control plane between UE and a network side device and often includes at least one of the following functions:
disseminate information provided by a non-access layer of a main network, where the RRC is responsible for disseminating network system information to the UE; and system information is often repeated according to a basic rule, and RRC is responsible for planning, segmentation and repetition, and also supports the diffusion of upper layer information;
associate broadcast information with an access layer, where the RRC is responsible for broadcasting network information to the UE; and the system information is often repeated according to a basic rule, and the RRC is responsible for carrying out planning, segmentation and repetition; and establishing, reestablishing, maintaining and releasing an RRC connection between the UE and the network side device, wherein in order to establish a first signal connection from the UE, a higher layer of the UE requests the establishment of an RRC connection; a RRC connection establishment process includes steps to reselect an available cell, control access permission and establish a layer 2 signal link; the RRC connection release is also requested by a higher layer, and is used to disable a last signal connection, or is initiated by an RRC layer when an RRC link fails; and, if a connection fails, the UE requests the reestablishment of an RRC connection; or, if an RRC connection fails, RRC releases an allocated resource.
[0058] The previous descriptions about RRC are just examples, and may change with the evolution of networks.
BRIEF DESCRIPTION OF THE DRAWINGS [0059] Figure 1 is a schematic diagram of a communications system (only one base station and UE are shown);
[0060] Figure 2 is a simplified schematic diagram of internal structures of a base station and UE described in an embodiment of the present invention;
[0061] Figure 3a and Figure 3b are schematic diagrams of
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13/75 transmission angles and receiving angles described in an embodiment of the present invention;
[0062] Figure 4 is a schematic diagram of a DPS scenario, according to an embodiment of the present invention;
[0063] Figure 5a, Figure 5b, Figure 5c and Figure 5d are schematic flowcharts of a signal transmission method, according to an embodiment of the present invention;
[0064] Figure 6 is a schematic diagram of a signal transmission apparatus (for example, a wireless network device), according to an embodiment of the present invention; and [0065] Figure 7 is a schematic diagram of another signal transmission apparatus (for example, user equipment), according to an embodiment of the present invention.
DESCRIPTION OF THE MODALITIES [0066] Next, there is a description of the technical solutions in the modalities of the present invention with reference to the accompanying drawings in the modalities of the present invention. Of course, the modalities described are only part and not all of the modalities of this application. All other modalities obtained by a person of ordinary skill in the technique, based on the modalities of this application, without creative efforts must fall within the scope of protection of this application.
[0067] The terms, such as component, module and system, used in this application, are used to indicate computer related entities. Computer-related entities can be hardware, firmware, hardware and software combinations, software or software running. For example, a component can be, but is not limited to, a process that runs on a processor, a processor, an object, an executable file, a thread of execution, a program and / or a computer. As an example, both a computing device and an application that runs on the computing device can be components. One or more components can reside within a process and / or a thread of execution, and the components can be located on a computer and / or distributed between two or more computers. In addition, these components can be run from various media readable by
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14/75 computer that have multiple data structures. These components can communicate using a local and / or remote process and according to, for example, a signal that has one or more data packets (for example, data from a component, where the component interacts with another component on a local system or a distributed system, and / or interact with other systems over a network, such as the Internet using a signal).
[0068] In addition, each aspect is described with reference to a wireless device in this application. The wireless device can be a wireless network device, or it can be a terminal device. The wireless network device can be a base station. The base station can be configured to communicate with one or more user equipment, or it can be configured to communicate with one or more base stations that have a user equipment function (for example, communication between a base macro station and a base microstation, such as an access point). The wireless device can also be user equipment, and the user equipment can be configured to communicate with one or more user equipment (for example, D2D communication), or it can be configured to communicate with one or more user stations. base. User equipment may also be referred to as a user terminal, and may include some or all of the functions of a system, a subscriber unit, a subscriber station, a mobile station, a wireless mobile terminal, a mobile device, a node, device, remote station, remote terminal, terminal, wireless communications device, wireless communications device, or user agent. The user equipment can be a cell phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a smart phone, a local wireless circuit station (WLL), a personal digital assistant (PDA), a laptop-type computer, a portable communications device, a portable computing device, a wireless satellite device, a wireless modem card, an in-vehicle device, a smart home appliance, an unmanned aerial vehicle, an Internet of Things and / or other processing device configured to communicate on a wireless system. The base station can also be called an access point, a node, a NodeB, an evolved NodeB (eNB), a TRP, a TP, a gNB
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15/75 or other network entity, and may include some or all of the functions of the preceding network entities. The base station can communicate with a wireless terminal via an air interface. Communication can be carried out using one or more sectors. By converting an incoming air interface board into an IP packet, the base station can be used as a router between a wireless terminal and other parts of an access network, where the access network includes a network of Internet Protocol (IP). The base station can additionally coordinate the management of air interface attributes, and can additionally act as a gateway between a wired network and a wireless network. For example, the base station can be an evolved NodeB (eNB), a radio network controller (RNC), a NodeB (NB), a base station controller (BSC), a base transceiver station (BTS), a home NodeB (for example, a home evolved NodeB, or a home NodeB, HNB), a baseband unit (BBU), an access point (AP) in a Wireless Fidelity (Wi-Fi) system, a wireless relay node, a wireless backhaul node, a transmission point (transmit and receive point, TRP or transmission point, TP), or the like, or it can be a gNB or a transmission point (TRP or TP) in a 5G system, such as NR, or an antenna panel or a group (which includes multiple antenna panels) of antenna panels from a base station in a 5G system, or it may be a network node that forms a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DU). In some implementations, gNB may include a centralized unit (CU) and a DU. The gNB may additionally include a radio unit (UK). CU implements some gNB functions, and DU implements some gNB functions. For example, CU deploys radio resource control layer (RRC) and Packet Data Convergence Protocol (PDCP) functions, and DU deploys radio link control (RLC) layer, Access Control functions Media (MAC) and physical (PHY). Since the RRC layer information is ultimately changed to PHY layer information, or is changed from PHY layer information, in this architecture, higher layer signaling, such as RRC layer or PHCP layer signaling is transmitted by DU, or transmitted by DU and RU.
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16/75
It can be understood that the network device can be a Cll node or a Dll node, or a device that includes a Cll node and a Dll node. In addition, Cll can be categorized as a network device on a RAN radio access network, or Cll can be categorized as a network device on a main CN network. This is not limited in this document.
[0069] In the embodiments of the present invention, TRP and communication between TRP and UE are used as examples for the description. It can be understood that the technical solutions, provided by the modalities of the present invention, can also be applied to communication between UEs (for example, a device to device, device to device, D2D communication scenario), or can be applied to communication between UEs. base stations (for example, a base macrostation and a base microstation), or can be applied to a network device other than TRP.
[0070] All aspects, modalities or characteristics are presented in this application describing a system that can include multiple devices, components, modules and the like. It should be verified and understood that each system may include another device, component, module and the like and / or may not include all the devices, components, modules, and the like discussed with reference to the attached drawings. In addition, a combination of these solutions can be used.
[0071] Furthermore, the word example, in the modalities of the present invention, is used to represent an example, an illustration or a description. Any project modality or scheme described as an example in this application should not be explained as being more preferred or having more advantages than another project modality or scheme. Exactly, for example it is used to present a concept in a specific way.
[0072] In the modalities of the present invention, "information", "signal", "message" and "channel" can sometimes be used alternately. It should be noted that meanings expressed are consistent when differences are not emphasized. From, corresponding and relevant can sometimes be used interchangeably. It should be noted that the meanings expressed are consistent when differences are not emphasized.
[0073] In the modalities of the present invention, a subscript, such as
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17/75 as Wi can sometimes be misspelled, in an unsigned form, such as W1, and the meanings expressed are consistent when differences are not emphasized.
[0074] The network architectures and service scenarios, described in the modalities of the present invention, are intended to describe, more clearly, the technical solutions in the modalities of the present invention, and do not constitute any limitation to the technical solutions provided by the modalities of the present invention. . A person of ordinary skill in the art may know that, with the evolution of a network architecture and the emergence of a new service scenario, the technical solutions, provided by the modalities of the present invention, are also applicable to similar technical problems.
[0075] The modalities of the present invention can be applied both to a time division duplex scenario (TDD) and to a frequency division duplex scenario (FDD).
[0076] The modalities of the present invention can be applied, additionally, to an EU centric communication scenario, in addition to some existing communication scenarios.
[0077] Optionally, in a future EU centric network, a non-cellular network architecture is introduced. Specifically, a large number of small cells are implemented in a specific area to form a super cell (Hyper cell), where each small cell is a point of transmission (TP) or a TRP of the hypercell, and is connected to a controller centralized.
[0078] Optionally, in a centric UE system, the UE can periodically transmit an uplink measurement reference signal. After receiving the reference signal transmitted by the UE, a network side device can select a set of TP and / or TRP (subgroup) ideal for the UE to serve the UE. When the UE moves within the hypercell, the network side device always selects a new subgroup for the UE to serve the UE, to avoid automatic switching of the actual cell and to deploy the UE's service continuity. The network side device includes a wireless network device.
[0079] Some scenarios in the modalities of the present invention are
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18/75 described using a 4G network scenario on a wireless communications network as an example. It should be noted that solutions in the embodiments of the present invention can be applied, in addition, to another wireless communications network, and corresponding names can also be replaced with corresponding function names in the other wireless communications network.
[0080] Figure 1 is a schematic structural diagram of a communications system. The communications system can include a main network, an access network and a terminal. Figure 1 shows only wireless network devices included in the access network, such as a base station, terminal and user equipment.
[0081] Figure 2 is a simplified schematic diagram of the internal structures of a base station and UE.
[0082] The base station, used as an example, may include an antenna array, a duplexer, a transmitter (TX) and a receiver (RX) (the TX and RX are sometimes collectively referred to as a TRX transceiver ), and a baseband processing part. The duplexer is configured to implement the use of an antenna array to transmit a signal and receive a signal. The TX is configured to implement conversion between a radio frequency signal and a baseband signal. Often, the TX can include a PA power amplifier, a digital to analog DAC converter and a frequency converter. Often, the RX can include a low noise LNA amplifier, an analog to digital ADC converter and a frequency converter. The baseband processing part is configured to implement processing of the transmitted or received signal, for example, layer mapping, pre-coding, modulation / demodulation and coding / decoding, and to perform separate processing on a physical control channel, a physical data channel, a physical broadcast channel, a reference signal, and the like.
[0083] In one example, the base station may additionally include a control part, configured to perform multiple user programming and resource allocation, pilot programming, physical layer parameter settings for the UE, and the like.
[0084] The UE, used as an example, can include an antenna, a
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19/75 duplexer, a transmitter (TX) and a receiver (RX) (the TX and RX are sometimes referred to collectively as a TRX transceiver), and a baseband processing part. In Figure 2, the UE has a single antenna. It can be understood that the UE can also have multiple antennas (specifically, an array of antennas).
[0085] The duplexer is configured to implement the use of an antenna array to transmit a signal and receive a signal. The TX is configured to implement conversion between a radio frequency signal and a baseband signal. Often, the TX can include a PA power amplifier, a digital to analog DAC converter and a frequency converter. Often, the RX can include a low noise LNA amplifier, an analog to digital ADC converter and a frequency converter. The baseband processing part is configured to implement processing of the transmitted or received signal, for example, layer mapping, pre-coding, modulation / demodulation and coding / decoding, and to perform separate processing on a physical control channel, a physical data channel, a physical broadcast channel, a reference signal, and the like.
[0086] In an example, the UE may also include a control part, configured to request a physical uplink resource, calculate channel state information (CSI) that corresponds to a downlink channel, determine whether a packet of downlink data is successfully received, and the like.
[0087] In current 5G research, beam alignment on one side of TRP and one side of UE is a critical problem.
[0088] A beam means that the energy directivity of a transmitted and / or received signal is reached (that is, the energy is accumulated in one direction) by adjusting an antenna weight (port), and the accumulation is called a beam. A beam that corresponds to the transmitted signal is a transmission beam, and a beam that corresponds to the received signal is a receive beam. The transmit beam and the receive beam can be called a pair of beams.
[0089] As learned in an NR discussion process, NR bundles are classified into bundles on one side of TRP and bundles on one side of UE. Both the TRP and the UE can form digital beams
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20/75 performing baseband pre-coding and conforming analog beams using a radiofrequency phase shifter, respectively. Since a massive MIMO technology can be applied to NR, a large number of antennas can make a shaped beam very narrow and have a very high resolution. Therefore, the beam directivity is more obvious. Therefore, a requirement is imposed on the alignment of a transmission beam and a receiving beam (beam alignment as an abbreviation).
[0090] A current discussion on beam alignment essentially focuses on a downlink. In general, several beam pairs are obtained by beam scanning. The downlink beam scan can be as follows: The TRP shapes and transmits a plurality of downlink beams (also called downlink transmission beams). The UE receives the plurality of downlink beams and, in a process of receiving the plurality of downlink beams through the UE, the UE may conform a plurality of downlink receiving beams (also called downlink beams) shifting the phase of a phase shifter and / or adjusting the weights of antenna ports on a baseband. In this way, an ideal downlink pair of beams is determined by scanning and measuring the plurality of downlink transmission beams and the plurality of downlink receiving beams, in which the pair of downlink beams includes one pair of a downlink transmission beam (TRP side) and a downlink receiving beam (UE side). In addition, the downlink transmission beam and the downlink receive beam are determined.
[0091] Similarly, the UE transmits a plurality of uplink beams (also called uplink transmission beams). The TRP receives the plurality of uplink beams and, in a process of receiving the plurality of uplink beams by the TRP, the TRP can form a plurality of uplink receiving beams by shifting the phase of a phase shifter. and / or adjusting antenna port weights on a baseband. Thus,
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21/75 a pair of ideal uplink beams can be determined by scanning and measuring the plurality of uplink transmission beams (also called uplink beams) and the plurality of uplink receiving beams (also called uplink bundles), wherein the uplink bundle pair includes a pair of an uplink transmit beam (UE side) and an uplink receive beam (TRP side).
[0092] However, in this way of determining a pair of uplink beams, scanning and measurement need to be performed between the UE and the TRP a plurality of times. In this application, a method for determining an uplink transmission beam is provided. Specifically, using spatial beam reciprocity, it is defined that a transmission angle (departure angle, AoD) of an uplink transmission beam can be inferred based on an angle of arrival, AoA) of a downlink receiving beam. In other words, the transmission angle of the uplink transmission beam can be determined based on the arrival angle of the downlink receive beam, and can be determined, specifically, based on a relationship between the transmission angle of the downlink link. uplink transmission beam and the angle of arrival of the downlink receiving beam. For example, the relationship may be that the transmission angle of the uplink transmit beam is equal to the arrival angle of the downlink receive beam. It can be understood that, for the relationship, other cases may also exist. For example, the interface can be specified in advance by a protocol and pre-stored on the UE side, or it can be configured by TRP. This is not limited in this document. Therefore, the UE can determine a corresponding uplink transmission beam after determining a downlink receiving beam. Figure 3a and Figure 3b are schematic diagrams of transmission angles and arrival angles. The arrival angle (AoA) is an angle included between a signal's arrival direction and a direction (such as a horizontal direction). The transmission angle is also called a departure angle (AoD), and is an angle included between a signal's starting direction and a direction (such as a direction
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22/75 horizontal). When there are a plurality of trajectories, consult an algorithm to measure and estimate, specifically, an AoA / AoD by the UE. The details are not described in this document. Figure 3a and Figure 3B show a stronger trajectory in a plurality of trajectories, as an example.
[0093] In addition, an arrival angle of an incoming link receiving beam, on the TRP side, can also be related to a transmission angle of a downlink transmission beam, on the TRP side. Specifically, the arrival angle of the uplink receiving beam on the TRP side can also be determined based on the transmission angle of the downlink transmission beam on the TRP side and, specifically, it can be determined based on a relationship between the arrival angle of the uplink receiving beam on the TRP side and the transmission angle of the downlink transmitting beam on the TRP side. For example, the relationship may be that the transmission angle of the downlink transmission beam is equal to the arrival angle of the uplink receive beam. It can be understood that, for the relationship, other cases may also exist. For example, the interface can be specified in advance by a protocol and pre-stored on the TRP side, or it can be configured by the TRP. This is not limited in this document.
[0094] Therefore, the transmission angle of the uplink transmission beam and the arrival angle of the uplink receive beam can be determined in a relatively simple way.
[0095] However, in NR communication, a case in which the UE receives a plurality of downlink beams may exist. In this case, the UE has arrival angles for a plurality of downlink receiving beams. How the UE determines a transmission angle of an uplink transmission beam referring to an arrival angle of a specific downlink receiving beam, or how the UE determines the selection of one of the uplink transmission beams that are obtained through scanning and measurement, needs to be discussed further. For example, a scenario in which the UE receives a plurality of downlink beams includes a
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23/75 single base station MIMO application, or some communication scenarios, such as a CoMP scenario, such as joint transmission (JT) or dynamic point selection (DPS) or a multi-panel communication scenario, or similar. Figure 4 is a schematic diagram of a DPS scenario. In this scenario, the UE receives downlink data from only one TRP at a time, such as a signal on a PDSCH downlink shared physical channel. Specifically, the UE receives beams dynamically from a plurality of TRPs. However, the UE must feedback uplink channel status information to a service cell to maintain communication with the service cell, instead of transmitting the uplink channel status information to a coordination cell. Therefore, if the UE determines an uplink transmission direction based on a downlink data beam direction being transmitted, a problem may occur in which the service cell that needs to receive the channel status information from uplink does not receive a signal. Therefore, in this scenario, a downlink resource to be referenced in uplink transmission needs to be indicated to the UE, to avoid a loss of gains from an uplink transmission beam or even a communication interruption problem.
[0096] In a possible mode, the UE and the TRP form a plurality of uplink beam pairs by scanning and measuring uplink beams. The TRP delivers resource information from an uplink signal to be transmitted by the UE, for example, an antenna port number from a reference signal and / or resource information from an uplink receive beam of a signal. uplink to be received by the TRP. In this way, the UE can determine, based on the information, an uplink transmission beam that corresponds to the uplink signal to be transmitted by the UE and / or the TRP can determine, based on the information, a receiving beam of uplink that corresponds to the uplink signal to be received by the TRP.
[0097] One embodiment of the present invention provides another possible mode: The UE determines, based on a downlink signal
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24/75 received from the TRP, an uplink transmission beam that corresponds to an uplink signal to be transmitted by the UE.
[0098] The mode, provided by this modality of the present invention, can be applied not only to a case in which the TRP and UE have downlink beam pairs and do not obtain uplink beam pairs by scanning or measurement, but also to a case where the TRP and the UE have downlink beam pairs and obtain uplink beam pairs by scanning or measuring.
[0099] A possible solution, as shown in Figure 5a, includes the following steps.
[0100] S1. The user equipment receives a first signal from a first wireless network device.
[0101] S2. The user equipment determines the spatial information of a second signal to be transmitted based on the first signal, and transmits the second signal to be transmitted using the spatial information.
[0102] Optionally, the spatial information of the second signal includes a transmission angle (starting angle) of the second signal, and the transmission angle of the second signal is determined based on an angle of arrival of the first signal.
[0103] It can be understood that the fact that the transmission angle of the second signal is determined based on an angle of arrival of the first signal can include:
the transmission angle of the second signal is equal to the arrival angle of the first signal; or a correspondence exists between the transmission angle of the second signal and the angle of arrival of the first signal; or a transmission angle of an uplink beam is selected from a pair of existing uplink beams, based on the angle of arrival of the first signal, as the transmission angle of the second signal. For example, a transmission angle of an uplink beam closest to the arrival angle of the first signal is selected as the transmission angle of the second signal.
[0104] Optionally, a deployment shown in any one
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25/75 among Figure 5b, Figure 5c and Figure 5d is available, and is described in detail hereinafter.
[0105] The deployment shown in Figure 5b includes the steps to follow.
[0106] S101. A second wireless network device transmits first indication information to the user equipment, and correspondingly, the user equipment receives the first indication information from the second wireless network device, where the first indication information is used to indicate that a quasi-colocalization relationship in relation to spatial information exists between a second signal and a first signal.
[0107] The fact that a quasi-colocalization relationship in relation to spatial information exists between a second signal and a first signal can mean:
spatial information from the second signal can be inferred from spatial information from the first signal, where spatial information can include at least one of a receiving arrival angle (AoA, also called a receiving angle or receiving angle), a transmission departure angle (AoD, also called a departure angle or a transmission angle), an arrival angle spread, a departure angle spread and spatial correlation.
[0108] Optionally, the fact that a quasi-colocalization relationship in relation to spatial information exists between a second signal and a first signal includes:
a quasi-colocalization relationship in relation to spatial information exists between resource information of the second signal and resource information of the first signal, that is, spatial information of the resource information of the second signal can be inferred from spatial information of the information of first signal resource, where the resource information includes at least one of the resource identifier information, antenna port information, channel state information measurement definition identifier information, and process identifier information.
[0109] Optionally, the first indication information can
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26/75 be delivered using higher layer signaling or physical layer signaling.
[0110] Optionally, the first signal includes a non-zero power reference signal.
[0111] Optionally, the nonzero power reference signal, included in the first signal, is at least one of a nonzero power reference signal used to obtain channel status information, a nonzero power reference signal used for demodulation, a non-zero power reference signal used for beam management, a synchronization signal and a tracking reference signal (tracking RS) used for time and frequency tracking and synchronization. For example, in an LTE system, a reference signal used to obtain channel status information can be a channel state information reference signal (CSI-RS), and a reference signal used for demodulation can be a signal demodulation reference (DMRS). In an NR system, a reference signal used to obtain channel status information can be a CSI-RS, or it can be another reference signal that has a function to obtain channel status information; a reference signal used for demodulation can be a DMRS, or it can be another reference signal that has a demodulation function; a reference signal used for beam management can be a beam management reference signal (BMRS), and the reference signal used for beam management can be used to measure a large-scale property of a beam, and used, additionally, for beam scanning, alignment and modification. For example, gains in large-scale property are measured, and a pair of bundles with the largest gains is used as a pair of bundles.
[0112] Optionally, the second signal includes a reference signal. The reference signal can be a non-zero power reference signal or it can be a zero power reference signal.
[0113] Optionally, the reference signal, included in the second signal, is at least one of a reference signal used for demodulation and a reference signal used for uplink channel measurement. For example, in the LTE system, a reference signal used for demodulation can be a DMRS, and a reference signal used for measuring channel
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27/75 uplink can be a poll reference signal (SRS). In the NR system, a reference signal used for demodulation can be a DMRS, or it can be another reference signal that has a demodulation function; and a reference signal used for uplink channel measurement can be an SRS, or it can be another reference signal that has an uplink channel measurement function.
[0114] In an optional mode, the first indication information can be included in a field used to indicate quasi-colocalization information, for example, a physical channel resource element quasi-colocalization and mapping (PQI) field shared downlink link in the LTE system.
[0115] To support the transmission of multiple coordinated points, 3 Generation Partnership Project (3GPP) Release 11, quasi-co- location antenna port is introduced in LTE, and is called a concept of QCL (Quasi - located) as an abbreviation in the LTE system. Signals transmitted from QCL antenna ports are subjected to the same large-scale attenuation. Large-scale attenuation includes delay spread, Doppler spread, Doppler shift, average channel gain and average delay. To assist a terminal device (ie, user equipment) in receiving downlink control information from a service TRP (a TRP to which a service cell belongs) through a PDCCH and receiving data from downlink from a coordinating TRP (a TRP to which a coordination cell belongs) through a PDSCH, Version 11 defines a new transmission mode, specifically, a transmission mode 10 (TM10), and introduces essentially the leading downlink shared physical channel resource element mapping and quasi-colocalization (PQI) indicator used to indicate a TRP from which downlink data is transmitted, and a group of gateways. antenna with which a large-scale channel property that corresponds to downlink data is consistent. In this way, the UE can learn, based on the PQI and with reference to a PDSCH mapping message configured in radio resource control signaling (RRC), about radio channel parameters that correspond to which group of gateways.
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28/75 antenna are needed to demodulate downlink data.
[0116] Specifically, for the UE for which ο TM10 is configured, there are two assumptions of QCL: a type of QCL A and a type B. In type A, all ports (port) of a service cell are quasi- colocalized. In type B, a PDSCH antenna port and an antenna port corresponding to a non-zero power channel information reference signal resource (NZP CSI-RS) are quasi-colocalized. A fragment of descriptions in a protocol is as follows:
Type A: The UE can assume that the antenna ports 0 to 3, 7 to 30 of a service cell are quasi-colocalized (as defined in [3]) in relation to delay spread, Doppler spread, Doppler shift and delay medium.
Type B: The UE can assume that the antenna ports 15 to 30 that correspond to the CSI-RS resource configuration identified by the highest layer parameter qcl-CSI-RS-ConfigNZPId-r11 (defined in subclause 7.1.9) and antenna ports 7 to 14 associated with the PDSCH are quasi-colocalized (as defined in [3]) in relation to Doppler shift, Doppler spread, average delay and delay spread.
[0117] Type A: The UE can assume that the antenna ports 0 to 3 and 7 to 30 of a service cell have a QCL ratio in relation to delay spread, Doppler spread, Doppler shift and average delay.
[0118] Type B: The UE can assume that the antenna ports 15 to 30 that match the CSI-RS resource configuration identified by the higher layer parameter qcl-CSI-RS-ConfigNZPId-r11 and the antenna ports 7 to 14 associated with the downlink shared physical channel (PDSCH) have a QCL ratio in relation to delay spread, Doppler spread, Doppler shift and average delay.
[0119] Antenna ports 15 to 30 are CSI-RS antenna ports, but antenna ports 7 to 14 are PDSCH antenna ports, and DMRS antenna ports are often consistent with PDSCH antenna ports . Therefore, type B also indicates a CSI-RS antenna port that has a QCL relationship with a DMRS antenna port.
[0120] For example, several possible parameter sets
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29/75 can be delivered (or configured) using higher layer signaling, such as radio resource control (RRC) signaling. For example, in the LTE system, four possible parameter sets are delivered. Using physical layer signaling, such as DCI signaling, a set of parameters that needs to be activated in the four possible parameter sets is indicated.
[0121] Specifically, in the LTE system, a field used to indicate the set of parameters that needs to be activated in the four possible parameter sets is a PDSCH RE mapping and quasi-colocalization (PQI) field.
[0122] One of the parameters included in the parameter set delivered using the highest layer signaling is an identifier, such as the qcl-CSI-RS-ConfigNZPId-r11 field, used to indicate a CSI-RS resource that it is quasi-colocalized with a PDSCH resource configured by the parameter set.
[0123] An identifier (identity or identifier, ID) of the CSI-RS resource indicates a group of CSI-RS resource settings.
[0124] For example, the CSI-RS identifier can be csi-RS-ConfigNZPId. Correspondingly, a configuration for each CSI-RS resource includes one or more of an antenna port quantity (such as an antennaPortsCount-r11 information element (which can also be called a field)) of the CSI-RS resource , a resource configuration (such as a resourceConfig-r11 information element), a subframe configuration (such as a subframeConfig-r11 information element), a scrambling identity (such as a scramblingldentity-r11 information element) and a CRS (common reference signal) that is quasi-colocalized, that is, that has a QCL relationship with the CSI-RS resource (such as a qcl-CRS-lnfo-r11 information element).
[0125] For example, information elements included in a group of CSI-RS resource settings can be as follows (3GPP TS36.211):
CSI-RS-ConfigNZP information elements
- ASN1START
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CSI-RS-ConfigNZP-r11 :: = csi-RS-ConfigNZPId-r11 antennaPortsCount-r11
SEQUENCE {
CSI-RS-ConfigNZPId-rH,
ENUMERATED {an1, an2, an4, an8}, resourceConfig-r11 subframeConfig-r11 scramblingldentity-r11 qcl-CRS-lnfo-r11 qcl-Scramblingldentity-r11 crs-PortsCount-r11
INTEGER (0..31),
INTEGER (0..154),
INTEGER (0..503),
SEQUENCE {
INTEGER (0..503),
ENUMERATED {n1, n2, n4, sparel}, mbsfn-SubframeConfigl_ist-r11
CHOICE {release setup subframeConfigList}
}
- Need ON}
- Need OR
NULL,
SEQUENCE {
MBSFN-SubframeConfigList
OPTIONAL
OPTIONAL, [[csi-RS-ConfigNZPId-v1310
OPTIONAL
- Need ON
]]}
CSI-RS-ConfigNZP-EMIMO-r13 :: = release setup nzp-resourceConfigList-r13
NZP-ResourceConfig-r13, cdmType-r13
OPTIONAL - Need OR
CSI-RS-ConfigNZPId-v1310
CHOICE {
NULL,
SEQUENCE {
SEQUENCE (SIZE (1..2)) OF
ENUMERATED {cdm2, cdm4}
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NZP-ResourceConfig-r13 :: = resourceConfig-r13
SEQUENCE {
ResourceConfig-r13,}
ResourceConfig-r13 :: = INTEGER (0..31)
-ASN1STOP [0126] The leading PQI field can be delivered in DCI (downlink control information, downlink control information) 2D format. For example, the PQI field can occupy two bits (bit).
[0127] For example, the meanings of the two bits of the PQI can be shown in the following table:
Field value of ‘PDSCH RE mapping and quasi-colocalization indicator’ description '00' Parameter set 1 configured by higher layers '01' Parameter set 2 configured by higher layers '10' Parameter set 3 configured by higher layers '11' Parameter set 4 configured by higher layers
[0128] In this way, the UE can learn, based on the received quasi-colocalization indicator field, which set of parameters is used, it can learn about a relationship between a CSI-RS port and a CRS port based on configurations about the CSI-RS in the parameter set, and can learn, additionally, about a CRS port that must be referenced to perform demodulation, frequency deviation correction, and the like when a PDSCH that matches the parameter set is received.
[0129] Specifically, delay spread, spread
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Doppler, Doppler shift and average delay are all parameters on a large scale. The fact that one antenna port, such as antenna port A, and another antenna port, such as antenna port B, is quasi-colocalized with respect to large-scale parameters means that a large-scale channel parameter antenna port B can be inferred using a large scale channel parameter obtained (transported) from antenna port A. The large scale parameter can additionally include average gain. Additionally, the large-scale parameter can additionally include spatial information (also called a spatial parameter, Spatial parameter). Spatial information can include at least one of a receiving arrival angle, a departure angle (also called a transmission angle), a arrival angle spread, a departure angle spread and spatial correlation. The spatial correlation can be related to a signal correlation matrix. Elements in the signal correlation matrix are used to describe correlation between two antenna units, where the antenna units can be antenna elements or antenna panels, or they can be other antenna units. This is not limited in this document.
[0130] With the appearance of multiple antenna panels of a TRP, QCL can be applied, additionally, to a case of transmission of multiple panels.
[0131] In this application, the QCL assumptions may additionally include QCL between the second signal and the first signal in relation to spatial information.
[0132] For example, assuming that a QCL relationship between a CSI-RS and an uplink SRS is defined, and that the spatial information is a departure angle and an arrival angle, type B descriptions in the assumptions of QCL may additionally include:
[0133] The UE can assume that antenna ports 15 to 30 that correspond to the CSI-RS resource configuration identified by the higher layer parameter qcl-Csirs-UplinkSRS and antenna ports 40 to 43 are quasi-colocalized in in relation to the Angle of arrival / Angle of departure.
[0134] Specifically, the UE can assume that the antenna ports 15 to 30 that correspond to the CSI-RS resource indicated by the parameter of
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33/75 highest layer qcl-Csirs-UplinkSRS and antenna ports 40 to 43 have a QCL ratio in relation to the arrival angle and the departure angle.
[0135] Antenna ports 40 to 43 can be uplink SRS ports.
[0136] Specifically, the second wireless network device can deliver, using higher layer signaling, such as RRC signaling, a plurality of parameter sets used for data transmission. For example, each parameter set may include content, just like the content in the antecedent parameter set (or it may not include some of the content in the antecedent parameter set; this is not limited in this document), and additionally include information about resource used to indicate the first signal that is quasi-colocalized, that is, that it has a QCL relationship with the second signal, such as a resource identifier. For example, if the second signal is an uplink SRS, and the first signal is a CSI-RS, each set of parameters can include a resource identifier for a CSI-RS. Since each parameter set additionally includes a CSI-RS resource identifier that is quasi-colocalized with a PDSCH, a number of parameter sets can be determined based on a combination of the CSI-RS resource identifier which is quasi-colocalized with the PDSCH and the CSI-RS resource identifier which is quasi-colocalized with the uplink SRS (i.e., joint encoding) and, in addition, index information for parameter sets that have different combinations are obtained. For example, there may be four CSI-RS resource identifiers that are quasi-colocalized with the PDSCH, and there may also be four CSI-RS resource identifiers that are quasi-colocalized with the uplink SRS. In this case, there are 16 parameter sets that have different combinations.
[0137] Additionally, the second wireless network device can transmit a field used to indicate quasi-colocalization information to the UE, such as the PQI, to transmit the first indication information prior to the UE.
[0138] Optionally, the field used to indicate the quasi-colocalization information can be delivered using DCI.
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34/75 [0139] Optionally, the field used to indicate the quasi-colocalization information can also be delivered using higher layer signaling.
[0140] For example, there are 16 parameter sets that have different antecedent combinations. In this case, a 4-bit field can be used to indicate a set of parameters used by the UE, that is, the first indication information is the 4-bit field, and the field can indicate the quasi-colocalization information. The UE additionally learns, based on the 4-bit field, from the second wireless network device, about resource identifier information that is from the CSI-RS that is quasi-colocalized with the uplink SRS and is included in the parameter set. In addition, since the parameter set additionally includes CSI-RS resource identifier information that is quasi-colocalized with the PDSCH, the UE can learn additionally about PDSCH information that is quasi-colocalized with the SRS uplink, such as information from a DMRS antenna port. The numbers 16 and 4 in the 16 parameter sets and in the 4-bit field are examples, or can be other values, and are not limited in this document.
[0141] The plurality of parameter sets used for data transmission can be included in a higher layer signaling field, and a parameter set can include at least one of the following parameters:
a number of ports of a cell reference signal, a port number of a cell reference signal, an indication of a frequency domain location of a cell reference signal, and an indication of a domain location of time of a cell reference signal;
a sync signal feature indication (the feature includes at least one of a time domain feature, a frequency domain feature or a beam feature, and optionally the indication can be an index or an identifier), and an indication of a time domain unit of a sync signal (where the time domain unit can be one or more of a subframe, a time slot, an OFDM symbol or a mini time slot, for example, the indication
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35/75 can be an index or an identifier);
multimedia broadcast multicast service (MBSFN) single frequency network configuration information (for example, configuration information can be a MBSFN broadcast time domain unit format, configuration information is used to indicate a unit occupied time domain for MBSFN transmission, and the time domain unit may be one or more within a subframe, a time slot, a symbol or a mini time slot);
a resource indication of a zero power CSI-RS used to obtain a channel state;
an indication of the resource location of a downlink data channel (such as a PDSCH downlink shared physical channel) (for example, the resource location may be a PDSCH time domain or frequency domain resource location, where the time domain location can be a PDSCH-occupied time domain resource, such as a PDSCH start and / or end OFDM symbol, and the frequency domain location can be a frequency domain resource occupied by PDSCH);
a resource indication, used to indicate a QCL relationship with a downlink DMRS, from a non-zero power CSI-RS used to obtain a channel state (the resource indication can be used to indicate a time- frequency and / or sequence of a CSI-RS pilot, for example, the resource indication can be a CSI-RS resource identifier), and a large-scale parameter indication used to indicate a QCL relationship with a DMRS downlink link (the indication is a large scale parameter used to indicate a QCL relationship with the CSI-RS, for example, the indication can be an indication of the large scale parameter type used to indicate a QCL relationship between the CSI -RS and DMRS, or can be a large-scale parameter indication used to indicate a QCL relationship between CSI-RS and DMRS); and a resource identifier indication, used to indicate a QCL relationship with an uplink SRS, from a non-zero power CSI-RS used to obtain a channel state, a port indication, used to indicate a QCL with an uplink SRS, from one
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Non-zero power CSI-RS used to obtain a channel state, a time-frequency location indication, used to indicate a QCL relationship with an uplink SRS, from a non-zero power CSI-RS used to obtain a channel state, a downlink DMRS resource indication, used to indicate a QCL relationship with an uplink SRS, a port (group) indication of a downlink DMRS, used to indicate a downlink relationship QCL with an uplink SRS, an indication of the time-frequency location of a downlink DMRS, used to indicate a QCL relationship with an uplink SRS, an indication of a sync signal resource, used to indicate a QCL relationship with an uplink SRS (such as an indication of a sync signal time domain unit, or a sync signal resource number), and an indication of large-scale parameter used to indicate a QCL relationship with an uplink SRS.
[0142] In this order, for a definition of QCL, see a definition of QCL in 5G. In the new NR radio system, QCL is defined as follows: The signals transmitted by antenna ports that are quasi-colocalized are subjected to the same large-scale attenuation. Large-scale attenuation includes one or more of the following parameters: delay spread, Doppler spread, Doppler shift, average channel gain, average delay and a spatial domain parameter. The spatial domain parameter can be one or more among parameters, such as a transmission angle (AoD), a dominant transmission angle (Dominant AoD), an average arrival angle (Average AoA), an arrival angle (AoA) , a channel correlation matrix, an azimuthal power spectrum of an arrival angle, an average start angle (Average AoD), an azimuthal power spectrum of a departure angle, transmission channel correlation, channel correlation receive, transmit beam conformation, receive beam conformation, spatial channel correlation, a filter, a spatial filter parameter, or a spatial receive parameter.
[0143] In this application, the indication can be an identifier or an index, and is not limited in this document.
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37/75 [0144] In this application, the time domain unit can be one or more of a subframe, a time slot, an OFDM symbol or a mini time slot.
[0145] Thus, using the first indication information, the UE can determine a parameter set activated in the plurality of parameter sets, and obtain additionally corresponding parameters, for example, learn about a QCL relationship between a CSI-RS and a DMRS to receive a PDSCH and a QCL relationship between a transmitted SRS and the first signal.
[0146] In another optional mode, the first indication information is included in downlink control information, and the downlink control information additionally includes information used to indicate information related to uplink programming, where the information related to uplink programming includes at least one of an uplink time-frequency mapping location and a modulation and encoding scheme.
[0147] In this mode, the first indication information is not included in a field used to indicate QCL information, for example, a PQI, but the first indication information is carried in other bits (field), for example, carried in an uplink Quasi-Co-Location Indicator QCL indicator field, in which the field includes several bits. Binary values of the various bits or each of the various bits (in the form of a bitmap) can indicate information from the first signal that is quasi-colocalized with the second signal. A number of the various bits is related to an amount of information from the first signal that is quasi-colocalized with the second signal. For example, if the first signal is a CSI-RS, and the number of resource identifiers for the first signal is 4, the number of the various bits can be 2, where 00, 01, 10 and 11 indicate, respectively, one of the four CSI-RS resource identifiers; or the number of different bits can be 4, and each bit corresponds to one of the four CSI-RS resource identifiers. Optionally, when a bit is 1, it can indicate that a corresponding CSI-RS resource identifier is activated; or, when a bit is 0, it can
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38/75 indicates that a corresponding CSI-RS resource identifier is not activated.
[0148] Optionally, the uplink QCL indicator field can be a field dedicated to indicate a QCL relationship between the second signal and the first signal, or the uplink QCL indicator field can be included in a request field SRS (such as a field in an SRS request field). The SRS request field is an SRS request on downlink control information transmitted by a base station to the UE, and the SRS request field is used to condition the UE to transmit an SRS, or is used to instruct the UE transmitting a closed loop power control parameter of an uplink signal.
[0149] Optionally, the first indication information, for example, the uplink QCL indicator field, can be carried in DCI, and it is a field dedicated to indicate a QCL relationship between the second signal and the first signal, or the first indication information can be indicated, together with other indication information. For example, the first referral information can be indicated, together with referral information for an SRS request. Specifically, the SRS request field is an SRS request in downlink control information transmitted by the base station to the UE, and the SRS request field is used to condition the UE to transmit an SRS. Optionally, the SRS request field can be used, in addition, to instruct the UE to transmit a closed loop power control parameter from an uplink signal. Specifically, a first wireless network device can transmit downlink control information to the UE, where the downlink control information can carry an SRS request field used to instruct the UE to transmit information from an SRS. The SRS request field can additionally be used as first referral information. For example, some fields in the SRS request field may indicate the first indication information, or an indicator bit in the SRS request field may indicate the first indication information.
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39/75 [0150] Optionally, the first indication information can be included in a field used to indicate information related to uplink programming.
[0151] S102. A first wireless network device transmits the first signal to the user equipment and, correspondingly, the user equipment receives the first signal from the first wireless network device, where the first wireless network device and the second wireless network device can be the same, that is, they can be the same wireless device, or they can be different.
[0152] Optionally, the first wireless network device can be a wireless network device to which a user equipment service cell belongs, or it can be a wireless network device to which a user equipment coordination cell user belongs; and the second wireless network device may be the wireless network device to which the user equipment's service cell belongs.
[0153] S103. The user equipment determines spatial information from the second signal based on the first signal, and transmits the second signal to the first wireless network device using the spatial information from the second signal.
[0154] Optionally, the spatial information of the second signal includes a transmission angle of the second signal, and the transmission angle of the second signal is determined based on an angle of arrival of the first signal.
[0155] Additionally, the first wireless network device can additionally determine a receiving angle of the second signal based on the first signal, and receiving the second signal using the receiving angle of receipt.
[0156] Additionally, an operating mode for determining spatial information can be as follows: The UE adjusts a weight of a physical and / or logical antenna, for example, adjusts a weight by adjusting a phase of an analog phase shifter and / or by adjusting a pre-coding matrix of a digital pre-coding, and the like, to form a weight arrangement. The UE can adjust a weight when receiving a signal, so that a receiving weight matrix is formed. A purpose of forming a
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40/75 UE receiving matrix is to optimize signal receiving performance and reduce interference, and the like. The UE can obtain, based on the energy distribution of the first signal in the spatial domain, spatial information to receive the first signal, and therefore select a receiving matrix that the UE considers the most appropriate to receive the signal. For example, obtaining, based on the energy distribution of the first signal in the spatial domain, spatial information to receive the first signal may include obtaining a signal correlation matrix from a spatial power spectrum of the signal through a mathematical transform (such as as a Fourier transform). Weights adjusted during signal transmission form a transmission weight matrix.
[0157] Additionally, when the first signal includes a plurality of signals, the UE determines the spatial information of the second signal based on spatial information of the plurality of signals in the first signal. Specifically, the UE can process the plurality of signals at the first signal, and obtain spatial information from the second signal. For example, the UE uses information from spatial domain or angle domain or beam domain that corresponds to spatial information from each signal in the first signal, such as spatial domain information or angle domain or beam domain from the second signal; or the UE uses spatial domain or angle domain or beam domain information that corresponds to spatial information from some signals in the first signal, such as spatial domain information or angle domain or beam domain from the second signal. In addition, the UE may use spatial information for some signals, in the first signal, as spatial information for a desired signal. The UE can use spatial information for some signals, in the first signal, as spatial interference information. When obtaining spatial information from the second signal, the UE can use spatial domain information or angle domain or beam domain that corresponds to some signals in the first signal, such as spatial information from a desired signal, and use spatial domain or domain information angle or beam domain that correspond to some signals in the first signal, such as spatial interference information. The desired signal can also be called a channel.
[0158] Additionally, when the second signal includes a
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41/75 plurality of signals, the UE can use equal or approximate spatial information for the plurality of signals of the second signal.
[0159] For example, the fact that the first signal includes a plurality of signals may mean that the first signal includes a plurality of CSI-RS resources or CSI-RS ports; and the fact that the second signal includes a plurality of signals may mean that the second signal includes a plurality of SRS resources or SRS ports.
[0160] Optionally, the UE can use a direction of receiving the first signal as a reference to a direction of transmission of the second signal.
[0161] For example, the UE can adjust a transmitting antenna weight to form a conjugate matrix relationship between a transmitting weight matrix of the second signal and a receiving weight matrix of the first signal. Optionally, the conjugate matrix relationship between the second signal's transmit weight matrix and the first signal's receive weight matrix includes: the second signal's transmission weight matrix is a Hermitian matrix of the first receiving weight matrix signal.
[0162] For S102 and S103, for example, in the preceding DPS scenario, shown in Figure 4, both the first wireless network device (TRP 1) and the second wireless network device (TRP2) deliver data to the UE, where a CSI-RS resource ID delivered by TRP 1 is equal to a CSI-RS resource ID which is indicated by the first indication information received by the UE and is quasi-colocalized with the second signal (such as an SRS). Therefore, the UE determines the spatial information of the second signal based on the CSI-RS resource ID delivered by TRP 1. For example, a direction of a transmission beam of the second signal points to TRP 1. A resource ID of CSI-RS delivered by TRP 2 is different from the CSI-RS resource ID which is indicated by the first indication information received by the UE and is quasi-colocalized with the second signal (such as an SRS). Therefore, the UE does not transmit the second signal to TRP 2. It can be understood that, in some scenarios, if there is a plurality of spatial information of the second signal to be transmitted by the UE, for example, in a JT scenario, the UE can transmit a data signal and / or a control signal to a plurality of TRPs, correspondingly, there can also be a
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42/75 plurality of spatial information of the first signal. For example, more than one TRP uses the same antenna port or resource identifier as the first signal that is quasi-colocalized with the second signal in relation to spatial information. Therefore, an objective of determining a plurality of spatial information of the second signal to be transmitted is achieved.
[0163] In addition, it can be understood that, often an antenna port of a reference signal used for uplink channel probing, such as an SRS, is consistent with an antenna port of a link data channel uplink shared channel (PlISCH) and / or an uplink control channel (such as a physical uplink control channel, PUCCH) .
[0164] The UE may additionally determine, based on the spatial information of the second signal, spatial information of a signal associated with the second signal, for example, spatial information of at least one of an uplink control channel, a signal of uplink data and a reference signal used for uplink demodulation.
[0165] In this way, the UE can determine the spatial information of the second signal using the first signal received by the UE and the first indication information used to indicate QCL between the second signal and the first signal in relation to spatial information.
[0166] Optionally, in another possible modality, the previous S101 is optional.
[0167] Specifically, S101 can be omitted when the first signal that is quasi-colocalized with the second signal in the QCL relationship between the first signal and the second signal in relation to spatial information is a compatible and fixed, non-configurable signal, or that dynamically changes between TRP and UE. The QCL interface can be predefined by the protocol.
[0168] Therefore, in accordance with the predefined predefined QCL ratio, the TRP indicates the spatial information of the second signal to be transmitted from the UE to the UE delivering the first signal. Upon receiving the first signal, the UE learns about the spatial information of the second signal to be transmitted from the UE in accordance with the predefined QCL ratio
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43/75 antecedent. Therefore, an objective of determining the spatial information of the second signal to be transmitted by the UE is achieved.
[0169] The deployment, shown in Figure 5c, includes the steps to follow.
[0170] S201. The user equipment receives second indication information from a second wireless network device, in which the second indication information is used to indicate that a first signal serves as a reference for spatial information of a second signal and, accordingly, corresponding, the second wireless network device transmits the second indication information to the user equipment.
[0171] S202. The user equipment receives the first signal from a first wireless network device and, correspondingly, the first wireless network device transmits the first signal to the user equipment.
[0172] S203. The user equipment determines the spatial information of the second signal to be transmitted based on the first signal, and transmits the second signal to be transmitted using the spatial information of the second signal.
[0173] Optionally, the spatial information of the second signal includes a transmission angle of the second signal, and the transmission angle of the second signal can be determined based on an angle of arrival of the first signal.
[0174] Additionally, an operating mode for determining spatial information may be as follows: The UE adjusts a weight of a physical and / or logical antenna, for example, adjusts a weight by adjusting a phase of an analog phase shifter and / or by adjusting a pre-coding matrix of a digital pre-coding, and the like, to form a weight arrangement. The UE can adjust a weight when receiving a signal, so that a receiving weight matrix is formed. One purpose of forming a receiving matrix by the UE is to optimize the performance of receiving the signal and reduce interference, and the like. The UE can obtain, based on the energy distribution of the first signal in the spatial domain, spatial information to receive the first signal, and therefore select a receiving matrix that the UE considers the most appropriate to receive the signal.
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44/75
For example, obtaining, based on the energy distribution of the first signal in the spatial domain, spatial information to receive the first signal may include obtaining a signal correlation matrix from a spatial power spectrum of the signal through a mathematical transform (such as as a Fourier transform). The weights adjusted during signal transmission form a transmission weight matrix.
[0175] Additionally, when the first signal includes a plurality of signals, the UE determines the spatial information of the second signal based on spatial information of the plurality of signals in the first signal. Specifically, the UE can process the plurality of signals at the first signal, and obtain spatial information from the second signal. For example, the UE uses information from spatial domain or angle domain or beam domain that corresponds to spatial information from each signal in the first signal, such as spatial domain information or angle domain or beam domain from the second signal; or the UE uses spatial domain or angle domain or beam domain information that corresponds to spatial information from some signals in the first signal, such as spatial domain information or angle domain or beam domain from the second signal. In addition, the UE may use spatial information for some signals, in the first signal, as spatial information for a desired signal. The UE can use spatial information for some signals, in the first signal, as spatial interference information. When obtaining spatial information from the second signal, the UE can use spatial domain information or angle domain or beam domain that corresponds to some signals in the first signal, such as spatial information from a desired signal, and use spatial domain or domain information angle or beam domain that correspond to some signals in the first signal, such as spatial interference information. The desired signal can also be called a channel.
[0176] Additionally, when the second signal includes a plurality of signals, the UE may use equal or approximate spatial information for the plurality of signals from the second signal.
[0177] For example, the fact that the first signal includes a plurality of signals may mean that the first signal includes a plurality of CSI-RS resources or CSI-RS ports; and the fact that the second sign includes a
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45/75 plurality of signals may mean that the first signal includes a plurality of SRS resources or SRS ports. Optionally, the UE can use a direction of receiving the first signal as a reference to a direction of transmission of the second signal.
[0178] For example, the UE can adjust a transmitting antenna weight to form a conjugate matrix relationship between a transmitting weight matrix of the second signal and a receiving weight matrix of the first signal. Optionally, the conjugate matrix relationship between the second signal's transmit weight matrix and the first signal's receive weight matrix includes: the second signal's transmission weight matrix is a Hermitian matrix of the first receiving weight matrix signal.
[0179] The second wireless network device and the first wireless network device can be the same or different.
[0180] One difference between the implantation shown in Figure 5c and the implantation shown in Figure 5b is that the first indication information, in Figure 5b, is related to the QCL assumptions, but the second indication information, in Figure 5c, have no direct relation to the QCL assumptions. In Figure 5c, the second indication information is used to indicate that the first signal serves as the reference for the spatial information of the second signal. Specifically, signaling is added to downlink transmission to indicate a reference resource for UE uplink transmission. The signaling (second indication information) can be physical layer signaling or higher layer signaling, or it can be a combination of higher layer signaling and physical layer signaling (for example, the higher layer signaling notifies a configuration , and physical layer signaling notifies activation).
[0181] Specifically, the first signal may include a nonzero power reference signal, for example, at least one of a reference signal (such as a CSI-RS) used to obtain channel status information, a reference (such as a DMRS) used for demodulation and a reference signal (such as a BMRS) used for beam management. The second signal is an uplink signal, and can be an uplink reference signal, for example, at least one of a signal
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46/75 reference used for demodulation or a reference signal used for uplink channel probing, or it can be an uplink data signal or a control signal.
[0182] Optionally, the second indication information can be included in the configuration information of the first signal.
[0183] Optionally, the first signal configuration information includes at least one of a first signal channel state measurement definition field, a first signal process field, a first signal resource field, a antenna port information field of the first signal and a beam information field of the first signal. The beam information field of the first signal can include a beam identifier (ID) of the first signal and, optionally, can additionally include an RS feature for beam management, such as an RS ID and / or an RS antenna port.
[0184] Optionally, the second indication information includes several bits, the first signal corresponds to at least one among the several bits, and the at least one bit indicates that the first signal serves as the reference for the spatial information of the second signal. In this case, the second indication information can be included in the setting field of measuring channel status information of the first signal or the process field of the first signal.
[0185] Assuming that the first signal is a CSI-RS, and that the second indication information is included in the measurement definition field of CSI (higher layer signaling), as shown below, the second indication information can be expressed as a reference NZP CSI-RS ID field (referenceCsirsNZPId), and the field is defined as a bit string (bit stream). Each bit in the bit stream can indicate, in a sequence predefined by a protocol, whether an NZP CSI-RS that corresponds to the NZP CSI-RS ID serves as a reference for the spatial information of the second signal. It can be understood that, in another optional mode, the field includes several ID values of NZP CSI-RS, where each ID value indicates a resource that serves as a reference for the spatial information of the second signal. Since a TRP knows a beam to which the first signal that needs to be indicated as a reference for the
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47/75 second signal belongs, a relationship between the first signal and the beam can be controlled, and the spatial information of the second signal is controllable.
CSI Measurementsetting :: = SEQUENCE {
csi-RS-ConfigNZPId1 CSI-RS-ConfigNZPId1, csi-RS-ConfigNZPIdX referenceCsirsNZP Id CSI-RS-ConfigNZPIdX,BIT STRING
}
-ASN1STOP [0186] Optionally, the second indication information is a field with a Boolean value, or the second indication information exists only when used to indicate that the first signal serves as the reference for the spatial information of the second signal. In this case, the second indication information is included in at least one of the first signal's resource field, the first signal's antenna port information field and the first signal's beam information field.
[0187] Assuming that the first signal is a CSI-RS, and that the second indication information is included in a resource field (higher layer signaling) of the NZP CSI-RS, as shown below, the second indication information can be expressed as an uplink reference enable field (referenceUplinkEnable). The uplink reference enable field is defined as a Boolean value. For example, a value of 1 can indicate that an NZP CSI-RS resource in which the field is located serves as a reference for the spatial information of the second signal; and a value of 0 may indicate that the NZP CSI-RS resource in which the field is located does not serve as a reference for the spatial information of the second signal. Alternatively, the uplink reference enable field can be defined as a field that is configured (exists) only when necessary. When the field exists in a message format, it indicates that the NZP CSI-RS resource on which the field is located serves as a reference for the spatial information of the second signal. When the field does not exist in a
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48/75 message format, this indicates that the NZP CSI-RS resource in which the field is located does not serve as a reference for the spatial information of the second signal. In this case, even if the UE has previously used the NZP CSI-RS feature where the field is located as a reference for the spatial information of the second signal, the UE needs to stop using the NZP CSI-RS feature where the field is located as a reference to the spatial information of the second signal. Optionally, the NZP CSI-RS resource field can additionally include a field that is configured only when necessary. When the field exists in a message format, it indicates that the NZP CSI-RS resource on which the field is located does not serve as a reference for the spatial information of the second signal. In this case, when the field indicating that the NZP CSI-RS resource in which the field is located serves as a reference for the spatial information of the second signal does not exist in a message format, it indicates that the NZP CSI- RS in which the field is located continues to serve as a reference for the spatial information of the second signal, until the field indicating that the NZP CSI-RS resource in which the field is located does not serve as a reference for the spatial information of the second signal. second signal exists in a message format.
CSI-RS-ConfigNZP :: = SEQUENCE {referenceUplinkEnable Boolean}
or
CSI-RS-ConfigNZP :: = SEQUENCE {referenceUplinkEnable ENUMERATED {true} OPTIONAL -Need OR}
[0188] Second indication information can also be included in physical layer signaling, for example, downlink control (DCI) information. When DCIs include at least one of the channel state information measurement definition field
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49/75 (CSI measurement definition), the first signal process field, the first signal resource field, the first signal antenna port information field and the first signal beam information field, the second referral information can also be included in at least one of the preceding fields in the DCI. Alternatively, the second referral information can be included in an independent field, that is, not be included in any of the preceding fields.
[0189] For example, the first signal is beam number information (for example, included in the beam information field or in an independent field), and the second indication information is included in the DCI. In this case, a number of bits occupied by the second indication information in the DCI is related to a number of beams. For example, if the beam number information is 0 to 3, the 2-bit information in the DCIs can be used to indicate to the UE a receiving direction which beam is a reference to the spatial information of the uplink signal. to be transmitted by the UE. As another example, the first signal is a CSI-RS, the reference to the spatial information of the second signal is an antenna port of the first signal or a resource ID (for example, included in the resource field of the first signal or in a independent field) of an antenna port, and the second indication information is included in the DCI. In this case, a number of bits occupied by the second indication information in the DCI is related to the grouping of the antenna port or grouping of the resource ID of the antenna port. For example, for antenna ports 0 to 3, ports 0 and 1 are one group, and ports 2 and 3 are another group. In this case, a bit in the DCI can be used as the second indication information; and, when the second indication information is 1, it indicates that signals at antenna ports 0 and 1 serve as a reference for the spatial information of the second signal; or, when the second indication information is 0, it indicates that signals at antenna ports 2 and 3 serve as a reference for the spatial information of the second signal. It can be understood that a specific indication mode of the second indication information can be defined differently according to a real situation. In this document, examples are not used as limitations.
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50/75 [0190] Optionally, the second indication information can also be carried in a field similar to the field of the first indication information. Specifically, the second indication information can be carried in an SRS request field in the downlink control information.
[0191] Therefore, based on an explicit indication of the second indication information, the UE learns about the first signal that serves as a reference for the spatial information of the second signal, and can additionally determine the spatial information of the second signal to be transmitted.
[0192] An embodiment of the present invention additionally provides an implicit indication. The deployment, shown in Figure 5d, includes the following steps.
[0193] S301. The user equipment receives a first signal from a first wireless network device and, correspondingly, the first wireless network device transmits the first signal to the user equipment.
[0194] Specifically, the first signal is a reference signal for spatial information of a second signal.
[0195] Optionally, the first signal has a characteristic of the reference signal for the spatial information of the second signal.
[0196] S302. The user equipment determines the spatial information of a second signal to be transmitted based on the first signal, and transmits the second signal to be transmitted using the spatial information.
[0197] Specifically, the user equipment determines that the first signal is the reference signal for the spatial information of the second signal; and the user equipment determines the spatial information of the second signal to be transmitted, based on the first signal.
[0198] Additionally, an operating mode for determining spatial information may be as follows: The UE adjusts a weight of a physical and / or logical antenna, for example, adjusts a weight by adjusting a phase of an analog phase shifter and / or adjusting a pre-coding matrix of a digital pre-coding, and the like, to form a
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51/75 weight arrangement. The UE can adjust a weight when receiving a signal, so that a receiving weight matrix is formed. One purpose of forming a receiving matrix by the UE is to optimize the performance of receiving the signal and reduce interference, and the like. The UE can obtain, based on the energy distribution of the first signal in the spatial domain, spatial information to receive the first signal, and therefore select a receiving matrix that the UE considers the most appropriate to receive the signal. For example, obtaining, based on the energy distribution of the first signal in the spatial domain, spatial information to receive the first signal may include obtaining a signal correlation matrix from a spatial power spectrum of the signal through a mathematical transform (such as as a Fourier transform). The weights adjusted during signal transmission form a transmission weight matrix.
[0199] Additionally, when the first signal includes a plurality of signals, the UE determines the spatial information of the second signal based on spatial information of the plurality of signals in the first signal. Specifically, the UE can process the plurality of signals at the first signal, and obtain spatial information from the second signal. For example, the UE uses information from spatial domain or angle domain or beam domain that corresponds to spatial information from each signal in the first signal, such as spatial domain information or angle domain or beam domain from the second signal; or the UE uses spatial domain or angle domain or beam domain information that corresponds to spatial information from some signals in the first signal, such as spatial domain information or angle domain or beam domain from the second signal. In addition, the UE may use spatial information for some signals, in the first signal, as spatial information for a desired signal. The UE can use spatial information for some signals, in the first signal, as spatial interference information. When obtaining spatial information from the second signal, the UE can use spatial domain information or angle domain or beam domain that corresponds to some signals in the first signal, such as spatial information from a desired signal, and use spatial domain or domain information angle or beam domain that correspond to some signals in the first signal, such as spatial information from
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52/75 interference. The desired signal can also be called a channel.
[0200] Additionally, when the second signal includes a plurality of signals, the UE may use equal or approximate spatial information for the plurality of signals from the second signal.
[0201] For example, the fact that the first signal includes a plurality of signals may mean that the first signal includes a plurality of CSI-RS resources or CSI-RS ports; and the fact that the second signal includes a plurality of signals may mean that the first signal includes a plurality of SRS resources or SRS ports.
[0202] Optionally, the UE can use a direction of receiving the first signal as a reference to a direction of transmission of the second signal.
[0203] For example, the UE can adjust a transmitting antenna weight to form a conjugate matrix relationship between a transmitting weight matrix of the second signal and a receiving weight matrix of the first signal. Optionally, the conjugate matrix ratio between the second signal transmission weight matrix and the first signal receiving weight matrix includes: the second signal transmission weight matrix is a Hermitian (Hermite) matrix of the second weight matrix. receiving the first signal.
[0204] Optionally, the fact that the user equipment determines that the first signal is the reference signal for the spatial information of the second signal includes: the user equipment determines that the first signal has the characteristic of the reference signal for the information the second signal.
[0205] Optionally, the characteristic of the reference signal for the spatial information of the second signal includes resource information for the signal, with the resource information including at least one of the antenna port information, resource identifier information, measurement definition identifier of channel status information and process identifier information, and the signal includes at least one of a downlink control signal, a nonzero power reference signal and a signal used for beam management .
[0206] Optionally, the spatial information of the second signal includes a transmission angle of the second signal, and the transmission angle
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53/75 of the second signal can be determined based on an angle of arrival of the first signal.
[0207] In this case, the reference (which includes a set of references) used to indicate the spatial information of the second signal is predefined by a protocol, and is known by both a TRP and user equipment.
[0208] Optionally, the reference (which includes a set of references) used to indicate the spatial information of the second signal cannot be configured.
[0209] In a possible mode, as specified in the protocol, the UE uses a one-channel resource (which can be called a downlink control channel, such as a physical downlink control channel PDCCH) used to transmit information downlink control, as a reference for transmitting an uplink signal. Specifically, the first signal is a downlink control channel. A downlink control channel feature includes at least one of an antenna port of a reference signal on the downlink control channel, an analog beam on which the downlink control channel is located, and the like.
[0210] Often, the downlink control channel is transmitted by a service cell, and the UE needs to perform an uplink feedback to the service cell. Therefore, a receiving beam to use the downlink control channel can be defined as a reference to the spatial information of the uplink signal (second signal).
[0211] Using DPS in Figure 4, as an example, in a coordinated transmission scenario, a service cell and a coordination cell exist. As specified in the protocol, the UE must determine an uplink transmission direction using a downlink control channel receiving direction.
[0212] In some scenarios, such as a DPS scenario, a gNB and a TRP can coexist, and the TRP can be a radio unit (radio unit, UK).
[0213] When a base station performs programming, if it is
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54/75 The UE is required to transmit an uplink signal to the service cell, the base station transmits a downlink control channel only in the service cell; or, if the UE is required to transmit uplink signals to the service cell and another coordination cell, all base stations that need to receive the uplink signals from the UE must transmit downlink control channels. A way of transmitting downlink control channels through a plurality of cells can be a simultaneous SFN (single frequency network) transmission mode, or a time division transmission mode, or the like.
[0214] In yet another possible mode, for example, as specified in the protocol, the UE should use one (some) downlink antenna port as a reference for uplink transmission. For example, using a CSI-RS port as a reference, the protocol specifies a port number to be referenced by the UE.
[0215] In this mode, the UE can determine an uplink transmission departure angle using an incoming antenna port arrival angle. In this mode, the TRP can cooperate in resource scheduling. Specifically, only the TRP that needs to receive the uplink signal from the UE can configure the antenna port that serves as a reference for the uplink transmission departure angle.
[0216] For example, as specified in the protocol, the UE uses a downlink antenna port 0 as a reference for the uplink transmission start angle.
[0217] When the base station performs a configuration, if a plurality of base stations cooperate, only one base station that needs to receive an uplink signal from the UE configures the antenna port 0; otherwise, configuration of antenna port 0 should be avoided.
[0218] For example, for a TRP 1 and a TRP 2, if the base station requires the UE to transmit an uplink signal to TRP 1, TRP 1 configures at least the antenna port during beam alignment 0 to form a downlink beam. After scanning is completed in
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55/75 a downlink transmission direction and receive direction, both the TRP 1 and the UE store information from a pair of beams that includes antenna port 0.
[0219] TRP 1 transmits the first signal using antenna port 0, but TRP 2 transmits the first signal without using antenna port 0.
[0220] Thus, only TRP 1 transmits the first signal using antenna port 0, and the protocol specifies that the UE uses antenna port 0 as a reference. Therefore, the UE is allowed to use a downlink arrival direction of a beam pair established only with TRP 1 and which includes antenna port 0, to determine an uplink transmission direction.
[0221] Optionally, TRP 2 may not allocate an antenna port 0 on a shaped beam during beam alignment. For example, TRP 2 configures antenna port 1 to form a downlink beam scan.
[0222] Thus, antenna port 0 exists only in the downlink pair of beams established between TRP 1 and the UE, but the protocol specifies that the UE uses antenna port 0 as a reference. Therefore, the UE can be allowed to use the downlink arrival direction of the beam pair established only with TRP 1 and which includes antenna port 0, to determine the uplink transmission direction.
[0223] In yet another possible way, the method is applied to beam management, and a beam ID exists. A beam ID corresponds to a group of TRP downlink transmission beam resources and UE receiving beam resources. The protocol specifies that a beam ID resource accepted by the protocol must be referenced for UE uplink transmission. For example, based on a downlink beam whose beam ID is X, a resource is referenced for uplink transmission.
[0224] An advantage of the mode is as follows: The base station can configure different beam pairs in different time resources. For a beam ID stored by the UE, the UE can perform uplink transmission at a random access stage using the beam ID
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56/75 aligned X, and can use a scan result entirely.
[0225] Optionally, the base station can additionally configure, in a downlink beam alignment process, only one TRP used to receive the second signal from the UE, to carry out downlink beam alignment in one stage beam scan using the feature whose beam ID is X. Therefore, the UE can be allowed to use a downlink arrival direction of a pair of beams established with the TRP used to receive the second signal from the UE , to determine the uplink transmission direction.
[0226] For example, as specified in the protocol, the UE uses beam ID 0 as a reference for uplink transmission.
[0227] When the base station performs a configuration, if a plurality of base stations cooperate, only one base station that needs to receive an uplink signal from the UE sets the beam ID to 0; otherwise, setting the beam ID to 0 should be avoided.
[0228] This mode is applicable to a case where a beam ID parameter exists. The beam ID can be delivered using higher layer signaling or physical layer signaling.
[0229] For example, for TRP 1 and TRP 2, the base station requires the UE to transmit an uplink signal to TRP 1 but not to transmit an uplink signal to TRP 2.
[0230] In this case, TRP 1 sets the beam ID to 0 in a beam training stage, where the beam corresponds to at least one antenna port, and forms a beam direction through analog / digital / hybrid. The forward link beam transmission direction of the base station and the receiving direction of the UE are adjusted, so that a pair of beams whose beam ID is 0 is conformed by beam alignment.
[0231] TRP 2 does not use beam ID 0 to establish a downlink beam pair relationship to the UE.
[0232] The UE establishes a beam pair with TRP 1, and it is specified that only beam ID 0 is used as a reference to transmit an uplink signal. Thus, an objective of allowing the UE to transmit an uplink signal only to TRP 1 is
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57/75 reached.
[0233] In yet another possible mode, as specified in the protocol, the UE must use a CSI-RS antenna port in a CSI-RS resource ID specified in the protocol as a reference to determine spatial uplink transmission information. .
[0234] An advantage of the mode is that, if a plurality of beams need to be scanned during beam scanning, different CSI-RS features are configured to scan the plurality of beams and, therefore, the beams can be distinguished using the CSI-RS resources.
[0235] For example, as specified in the protocol, the UE uses a resource ID of CSI-RS NZP 0 as a reference for the uplink transmission spatial information.
[0236] When the base station performs a configuration, if a plurality of base stations cooperate, only one base station that needs to receive an UE uplink signal sets the NZP ID CSI-RS to 0; otherwise, setting the NZP CSI-RS ID to 0 should be avoided.
[0237] The mode is applicable to a case where the base station uses an NZP CSI-RS feature to manage a beam direction.
[0238] Both TRP 1 and TRP 2 can establish an alignment relationship of a pair of downlink beams with the UE. If the base station expects the UE to transmit an uplink signal only to TRP 1, TRP 1 configures a NZP CSI-RS resource for the UE, where a resource ID is 0, and the resource corresponds to at least one antenna port. When TRP 2 performs beam alignment with the UE, an ID of a CSI-RS NZP resource that is configured by TRP 2 and in which a beam is located is different from that of TRP 1.
[0239] At least one of an antenna port's port number, a time-frequency resource location, and the like in the NZP CSI-RS resource configured by TRP 1 is different from that configured by TRP 2, so that the two NZP CSI-RS features can be distinguished. The antenna port number, time-frequency resource location, or the like in each NZP CSI-RS resource can be delivered using
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58/75 higher layer signaling.
[0240] The UE establishes a pair of beams with TRP 1, and it is specified that only the NZP resource ID CSI-RS 0 is used as a reference to transmit an uplink signal. Thus, an objective of allowing the UE to transmit an uplink signal only to TRP 1 is achieved.
[0241] It can be understood that, in this document, the reference to the uplink transmission spatial information can also be a reference to an analogue uplink beam and / or digital beam conformation of the UE, or similar, and can finally be reflected as a reference for an uplink transmission angle. A signal (second signal) for uplink transmission includes at least one of an uplink control signal, an uplink data signal and a reference signal. The uplink control signal is a physical uplink control channel PUCCH or similar. The uplink data signal is a physical PUSCH uplink data channel or the like. The reference signal is an SRS, a DMRS or similar.
[0242] It can be understood that, when the protocol uses a predefined mode, the base station and the UE understand the specification consistently. The UE can use the downlink feature only as a reference for the uplink transmission direction, and the downlink feature can also be used by the TRP used only for uplink reception.
[0243] One of the predefined antecedent modes in the protocol can be defined, or a combination of them can be defined. When a combination is defined, the base station and the UE need to understand the definition consistently during configurations.
[0244] Using at least one method in the background 5b, 5c and 5d, an objective of determining, through the UE, spatial information of the uplink signal can be achieved, and a beam scanning and measurement process to obtain a pair of uplink beams can be simplified or omitted.
[0245] Additionally, using at least one method in 5b, 5c
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59/75 and 5d, the UE can learn a spatial domain relationship between the first signal and the second signal. The spatial domain relationship includes spatial parameters mentioned elsewhere in this application, for example, one or more among parameters, such as a transmission angle (AoD), a dominant transmission angle (Dominant AoD), an average arrival angle ( Average AoA), an angle of arrival (AoA), a channel correlation matrix, an azimuthal spectrum of power of an angle of arrival, an average angle of departure (Average AoD), an azimuth spectrum of power of an angle of departure , transmit channel correlation, receive channel correlation, transmit beam conformations, receive beam conformation, spatial channel correlation, a spatial filter, spatial filter parameter or spatial receive parameter. Since a loss of trajectory and / or a timing advance is also related to a spatial domain relationship, on the condition that the UE determines the first signal that has a spatial domain relationship with the second signal, the UE can measure a loss of downlink path using a power received from the first signal, to determine an uplink transmission power of the second signal, or adjust a timing advance using a receive time of the first signal, to determine a time transmission of the second signal. In this way, the UE can receive the first signal, and determine a relationship between the second signal and the first signal. In addition, the UE may perform one or more of the following: determine, based on spatial information to receive the first signal, corresponding spatial information to transmit the second signal, determine the transmission power of the second signal based on the power received from the first signal, and determine the transmission time of the second signal based on the reception time of the first signal.
[0246] Specifically, the UE may obtain, according to at least one method in 5b, 5c and 5d, spatial information to receive a downlink signal, in which spatial information is used to determine spatial information to transmit a signal. uplink. Therefore, the UE obtains a correspondence between the downlink signal and the uplink signal. In principle, the correspondence is to instruct the UE to perform transmission in an appropriate spatial direction
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60/75 to facilitate reception by the base station. Uplink signals, transmitted by the UE in different directions, are subjected to different path losses and propagation delays in a propagation process. As shown in Figure 4, TRP 1 and TRP 2 are two points of transmission, and the two points of transmission can be points of transmission in different geographic locations. Since the distances from the UE to the two transmission points are not the same, the path losses and propagation delays that uplink signals transmitted by the UE are subjected to are also different. In at least one method in 5b, 5c and 5d, the UE determines spatial information of the second signal based on the first signal, where one principle is that a spatial propagation path of the first signal is highly related to a path of the second signal. Therefore, the loss of trajectory and the propagation delay that the first signal is submitted in the propagation process can also be considered as highly related to the loss of trajectory and propagation delay that the second signal is submitted in the propagation process. Therefore, a correspondence between the first signal and the second signal can also be used by the UE to determine the path loss and propagation delay of the second signal.
[0247] Optionally, the first signal includes a non-zero power reference signal.
[0248] Optionally, the nonzero power reference signal, included in the first signal, is at least one of a nonzero power reference signal used to obtain channel status information, a nonzero power reference signal used for demodulation, a non-zero power reference signal used for beam management, a synchronization signal and a tracking reference signal (tracking RS) used for time and frequency tracking and synchronization. For example, in an LTE system, a reference signal used to obtain channel status information can be a channel state information reference signal (CSI-RS), and a reference signal used for demodulation can be a signal demodulation reference (DMRS). In an NR system, a reference signal used to obtain channel status information can be a CSI-RS, or it can be another reference signal that has a function of obtaining
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61/75 channel status information; a reference signal used for demodulation can be a DMRS, or it can be another reference signal that has a demodulation function; a reference signal used for beam management can be a beam management reference signal (BMRS), and the reference signal used for beam management can be used to measure a large-scale property of a beam, and used, additionally, for beam scanning, alignment and modification. For example, gains in large-scale property are measured, and a pair of bundles with the largest gains is used as a pair of bundles.
[0249] Optionally, the second signal includes a reference signal. The reference signal can be a non-zero power reference signal or it can be a zero power reference signal.
[0250] Optionally, the reference signal, included in the second signal, is at least one of a reference signal used for demodulation and a reference signal used for uplink channel measurement. For example, in the LTE system, a reference signal used for demodulation can be a DMRS, and a reference signal used for uplink channel measurement can be a polling reference signal (SRS). In the NR system, a reference signal used for demodulation can be a DMRS, or it can be another reference signal that has a demodulation function; and a reference signal used for uplink channel measurement can be an SRS, or it can be another reference signal that has an uplink channel measurement function.
[0251] In a possible implementation of this request, the UE can determine a transmission power of an uplink signal (which includes the second signal and / or a signal associated with the second signal) based on the received power of the first signal, and use the transmit power to transmit the uplink signal.
[0252] The signal associated with the second signal may include a signal that has a non-empty intersection between an antenna port (also called an abbreviated port) of the signal and an antenna port of the second signal, where the signal can be an uplink data signal, and / or an uplink control signal, and / or a reference signal other than the second signal.
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62/75 [0253] Optionally, for the signal associated with the second signal, a relationship between the signal and the second signal can be indicated in an explicit indication mode. For example, the base station transmits signaling to the UE, which indicates that one signal is a signal associated with the second signal.
[0254] Specifically, this request provides a method of communication. The method can include the following steps.
[0255] S801. A base station transmits information to the UE used to indicate a transmission power for a first signal.
[0256] Correspondingly, the UE receives the information used to indicate the transmission power of the first signal.
[0257] Optionally, the indication mode can be that the base station transmits signaling to the UE using an information element in the RRC signaling, where the signaling indicates the transmission power of the first signal.
[0258] Optionally, the transmit power is a transmit power from the base station.
[0259] S802. The UE receives the first signal, and measures and obtains a power received from the first signal.
[0260] Optionally, the UE can perform smooth filtering on the power received from the first signal in a time window to obtain a received power filtered as the power received from the first signal.
[0261] When the first signal is a CSI-RS used to obtain channel status information, the received power can also be called a received CSI-RS power (RSRP, reference signal received power).
[0262] S803. The UE obtains a loss of trajectory of the first signal based on the transmission power of the first signal and the received power of the first signal that are notified by the base station.
[0263] Optionally, the power received from the first signal can be a power received from the reference signal.
[0264] Optionally, the loss of trajectory is equal to a difference obtained by subtracting a power received from the filtered reference signal from the transmission power.
[0265] S804. The UE determines a transmission power of
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63/75 uplink based on path loss or an open circuit control parameter related to path loss, and uses uplink transmission power to transmit an uplink signal. The use of uplink transmit power to transmit an uplink signal can be optional.
[0266] The uplink signal includes the second signal and / or a signal associated with the second signal. Optionally, the UE obtains a correspondence between the first signal and the second signal and / or the signal associated with the second signal. At least one method in 5c, 5d and 5b can be performed to obtain the correspondence.
[0267] The signal associated with the second signal may include a signal that has a non-empty intersection between an antenna port (also called an abbreviated port, port) of the signal and an antenna port of the second signal, in which the The signal may be an uplink data signal and / or an uplink control signal and / or a reference signal other than the second signal. For example, the second signal is an SRS, and the SRS has only one port, such as port 12, but a PUSCH has four ports, such as ports 9 to 12; since the SRS port is one of the four PUSCH ports, PUSCH can be considered as the signal associated with the second signal. As another example, the second signal is an SRS, and the SRS has two ports, such as a port 10 and a port 12, but a PUSCH has four ports, such as ports 7, 9, 11 and 12; since an intersection exists between the SRS antenna ports and the PUSCH antenna ports, that is, port 12, the PUSCH can be considered as the signal associated with the second signal.
[0268] The signal associated with the second signal and the second signal are often signals transmitted using equal or approximate spatial information.
[0269] Optionally, for the signal associated with the second signal, a relationship between the signal and the second signal can be indicated in an explicit indication mode. For example, the base station transmits signaling to the UE, which indicates that one signal is a signal associated with the second signal.
[0270] Often, the UE can obtain uplink transmission power based on one or more of the
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64/75 open circuit control parameter, a closed circuit control parameter, a nominal power density expected by the base station, a signal bandwidth and a maximum power limit. The open circuit control parameter can include the loss of the previous path.
[0271] This is equivalent to compensating the transmission power by the UE for loss of trajectory, so that the signal quality of the uplink signal (such as the second signal) that is subjected to loss of trajectory in a process of spread may meet a demodulation requirement of the base station.
[0272] Optionally, the loss of trajectory compensation can be reflected by a product of the loss of trajectory and a coefficient (also called a compensation coefficient, a loss of trajectory compensation coefficient, a factor, a compensation factor or a trajectory compensation factor). The coefficient can be a non-negative number, and is configured by the base station for the UE, where the configuration can be cell specific (cell specific) or UE specific (UE specific). When the coefficient is set to 1, the UE compensates for the transmission power of the second signal with all the path losses measured from the first signal; when the coefficient is set to 0, the UE does not compensate for any loss of trajectory; when the coefficient is set to less than 1, the UE compensates for the transmission power of the second signal with some of the path losses measured from the first signal, in which case when the base station sets a compensation coefficient that is less than 1, interference with other users can be reduced when the second signal is received; or, when the coefficient is set to greater than 1, the UE compensates the transmission power of the second signal with excessively measured path losses of the first signal. The base station sets the compensation coefficient that is greater than 1, and this can compensate for asymmetry between beamform on the base station side and beamform on the UE side. Specifically, the energy of beam-forming signals transmitted and received by the base station is more concentrated in a radiation pattern, and the main lobes are narrower; however, as the antenna configurations of the UE are less massive than those of the
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65/75 base station, the energy of beam-forming signals transmitted and received by the UE is more dispersed in a radiation pattern, and main lobes are wider. This causes concentrated energy distribution of downlink signals in space. The UE can receive a narrow beam using a wide beam and can better obtain a downlink signal, but the base station receives, using a narrow beam, a wide uplink beam transmitted by the EU, and some energy is lost. Therefore, the base station sets the compensation coefficient that is greater than 1 for the UE, so that the UE can compensate for losses caused by the foregoing reasons.
[0273] In conclusion, the UE can measure the power received from the first signal to obtain the path loss (PL) of the first signal, and compensate the second signal for the path loss based on the path loss of the first signal . The UE compensates the transmission power of the second signal with alpha * PL, where alpha is a path loss compensation factor. After performing path loss compensation, the UE transmits the second signal to the base station using a transmit power that satisfies a maximum transmit power limit. The path loss compensation factor can be specified by a protocol, either pre-configured or pre-stored locally, or can be configured by the base station.
[0274] In another possible implementation of this request, the UE may determine and / or adjust a transmission time of the uplink signal based on a reception time of the first signal.
[0275] The uplink signal includes the second signal and / or the signal associated with the second signal.
[0276] For descriptions of the first signal, the second signal, the signal associated with the second signal and the uplink signal, see the descriptions in the previous method.
[0277] Specifically, this request provides a method of communication. The method can include the following steps.
[0278] S901. A base station transmits at least two first signals to the UE.
[0279] Correspondingly, the UE receives the first signals from the
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66/75 base station.
[0280] Optionally, the at least two first signals have the same configuration information, and the configuration information can be used to indicate at least one of an antenna port used by a downlink signal, a time resource location. -frequency and an identifier of a resource in which the downlink signal is located.
[0281] S902. The UE determines a variation of a propagation delay of the first signal based on the at least two first signals.
[0282] Optionally, the variation of the propagation delay of the first signal can be a function of the reception time of the at least two first signals, for example, a difference between the reception time of the first two signals in the at least two first signals, or an average value of a plurality of differences.
[0283] In this order, the receiving time is a time, determined by the UE, in which a signal is received. A deviation can exist between the receiving time and a time when the signal actually arrives. For example, the receiving time is a quantized time, and the receiving time can also be called a receiving delay.
[0284] S903. The UE determines and / or adjusts a transmission time of an uplink signal based on the variation of the propagation delay of the first signal.
[0285] Optionally, the UE can adjust an uplink transmission timing (TA) advance based on the variation (also called a shift or offset) of the propagation delay of the first signal. Since the transmission time of the uplink signal is related to the timing advance, this is equivalent to adjusting the transmission time of the uplink signal by the UE.
[0286] Optionally, Adjusted TA = Unadjusted TA + Deviation. The deviation can be a positive value or a negative value.
[0287] S904. The UE transmits the uplink signal based on the transmission time of the uplink signal.
[0288] In general, the link signal transmission time
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Upward 67/75 can be determined by the base station. The base station can determine, using a signal transmitted by the UE, for example, a preamble preamble signal, an uplink channel SRS probe signal or a dedicated uplink signal used for DMRS demodulation, a propagation delay that the signal transmitted by the UE is submitted in a propagation process. The base station can determine, by measuring the signal propagation delay, a time setting for transmitting the uplink signal by the UE, where the time setting can be indicated by an uplink timing advance. Using a timing advance indication, the base station expects that the signal transmitted by the UE and which is subjected to propagation delay in the propagation process, can arrive at the base station at a time expected by the base station, so that interference with other UEs in a cell is reduced. Specifically, the base station can adjust a transmission time of an uplink signal by the UE, so that the UEs are orthogonal to each other in the time-frequency and space domains. For a plurality of UEs orthogonal to each other in the time-frequency domain, if a time when the signal transmitted by the UE arrives at the base station overlaps a time when a signal transmitted by another UE in the plurality of UEs arrives at base station, the UEs that must be orthogonal at the same time overlap each other, causing interference. Therefore, the uplink signal transmitted by the UE must satisfy a delay requirement expected by the base station.
[0289] When the base station notifies the UE of the timing advance using a Media Access Control (MAC) layer information element, a time is required between two transmissions of MAC layer information elements. When no timing advance notification delivered by the base station is received, the UE alone can adjust and update the timing advance based on the time it takes to receive the downlink signal (first signal). Specifically, the UE can measure a time difference between receiving times of first two signals to obtain a difference between receiving times of downlink signals,
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68/75 infer a change in a propagation delay that the downlink signal is subjected to, and use the change in the propagation delay to adjust the forward transmission time delay.
[0290] At S904, the UE can transmit, based on the transmission time of the uplink signal, a second signal from a time domain unit corresponding to the transmission time, where the time domain unit can be one or more within a subframe, a time slot (slot), a symbol (such as an OFDM symbol) or a mini time slot (minislot).
[0291] Optionally, after adjusting the uplink transmission timing advance, the UE can update a maintained or stored uplink transmission timing advance.
[0292] Additionally, the UE can optionally report an uplink transmission timing advance, for example, an adjusted uplink transmission timing advance. Alternatively, the UE may report information related to the uplink transmission timing advance, where the information is a value of a function that corresponds to the uplink transmission timing advance. When the UE needs to maintain a plurality of uplink timing advances, the UE may report a plurality of uplink timing advances, or a plurality of information related to uplink transmission timing advances, or information related to an plurality of uplink transmission timing advances. Specifically, the UE can report a difference between at least two of the plurality of uplink timing advances or a difference function. The difference function can be an FFT / IFFT function between a time domain difference and a frequency domain phase shift that corresponds to the time domain difference. The UE may report, at least one of a first network device and a second network device, an uplink transmission timing advance of an uplink signal that corresponds to at least one of the first network device and the second network device, or information related to a transmission transmission timing advance
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69/75 uplink. A correspondence exists between the forward link transmission timing advance reported by the UE, or the information related to the forward link transmission timing advance, and a first signal that corresponds to the first network device, and / or a first signal that corresponds to the second network device.
[0293] For example, in a first time domain unit interval 1 and a second time domain unit interval 2, the UE receives first signals from interval 1 and interval 2. Interval 1 is an example of the first time domain unit, and interval 2 is an example of the second time domain unit. Upon receiving a downlink signal, the UE can perform synchronous timing based on a location of a physical signal, such as a pilot to obtain an arrival time t1 of the first signal in interval 1 and an arrival time t2 of the first signal of interval 2. The UE can obtain a change in a propagation delay of the downlink signal based on a time difference between t1 and t2. For example, a time domain unit interval duration can be tO, for example, tO = 0.5 ms. There are N interval durations from interval 1 to interval 2, where N is a number of time domain units between interval 1 and interval 2. The UE can obtain, based on a calculation result of t2 - t1 - N * tO, how much the downlink propagation delay of the first signal changes from interval 1 to interval 2. Often, the base station transmits a timing advance command, which notifies the UE of a timing advance required to transmit an uplink signal, and the UE must record and maintain the corresponding TA timing advance. When the UE has not received the timing advance command, the UE can adjust a currently maintained TA based on the change in the propagation delay of the first signal. An adjusted TA is equal to an unadjusted TA plus a variation of the propagation delay of the first signal. The UE adjusts the TA, and transmits a second signal based on the adjusted TA.
[0294] Based on the foregoing method, as shown in Figure 6, an embodiment of the present invention additionally provides a signal transmission apparatus, in which the apparatus may be a device
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Wireless 70/75 10. The wireless device 10 may correspond to the first wireless network device or the second wireless network device in the foregoing method. The first wireless network device can be a base station (such as a TRP), or it can be another device, and is not limited in this document. The second wireless network device can be a base station (such as a TRP), or it can be another device, and is not limited in this document.
[0295] The apparatus may include a processor 110, a memory 120, a bus system 130, a receiver 140 and a transmitter 150. Processor 110, memory 120, receiver 140 and transmitter 150 are connected by the bus system 130. Memory 120 is configured to store an instruction. Processor 110 is configured to execute instruction stored in memory 120 to control receiver 140 to receive a signal and control transmitter 150 to transmit a signal, and complete the steps of the first wireless network device (such as a base station ) and the second wireless network device in the previous method. Receiver 140 and transmitter 150 can be the same physical entity or different physical entities. When receiver 140 and transmitter 150 are the same physical entity, they can be collectively referred to as a transceiver. Memory 120 may be integrated with processor 110, or may be disposed of separately from processor 110.
[0296] In an implantation, the functions of receiver 140 and transmitter 150 can be considered to be implanted by a dedicated transceiver circuit or transceiver chip. Processor 110 can be considered to be implanted by a dedicated processing chip, processing circuit, processor or general purpose chip.
[0297] In another implantation, it can be considered that the wireless device, provided by this modality of the present invention, is implanted using a general purpose computer. Specifically, the function program code of processor 110, receiver 140 and transmitter 150 is stored in memory; and the general purpose processor implements the functions of processor 110, receiver 140 and transmitter 150 by executing the code in memory.
[0298] For concepts, explanations and detailed descriptions
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71/75 related to the technical solution provided by this modality of the present invention, used in the apparatus and other steps, see the descriptions about the content in the previous method or other modalities. The details are not described again in this document.
[0299] Based on the foregoing method, as shown in Figure 7, an embodiment of the present invention additionally provides another signal transmission apparatus, in which the apparatus may be a wireless device 20. The wireless device 20 corresponds to the user equipment in the previous method.
[0300] The apparatus may include a processor 210, a memory 220, a bus system 230, a receiver 240 and a transmitter 250. Processor 210, memory 220, receiver 240 and transmitter 250 are connected by the bus system 230. Memory 220 is configured to store an instruction. Processor 210 is configured to execute the instruction stored in memory 220 to control receiver 240 to receive a signal and to control transmitter 250 to transmit a signal, and to complete the steps of the user equipment in the foregoing method. Receiver 240 and transmitter 250 can be the same physical entity or different physical entities. When receiver 240 and transmitter 250 are the same physical entity, they can be collectively referred to as a transceiver. Memory 220 may be integrated with processor 210, or may be disposed of separately from processor 210.
[0301] In a deployment, it can be considered that the functions of receiver 240 and transmitter 250 are implemented by a transceiver circuit or a dedicated transceiver chip. Processor 210 can be considered to be implanted by a dedicated processing chip, processing circuit, processor or general purpose chip.
[0302] In another implantation, it can be considered that the wireless device, provided by this modality of the present invention, is implanted using a general purpose computer. Specifically, the function program code of processor 210, receiver 240 and transmitter 250 is stored in memory; and the general purpose processor implements the functions of processor 210, receiver 240 and transmitter 250 by executing the code in memory.
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72/75 [0303] For concepts, explanations and detailed descriptions related to the technical solution provided by this modality of the present invention, used in the apparatus and other steps, see the descriptions about the content in the previous method or other modalities. The details are not described again in this document.
[0304] Based on the method provided by the modalities of the present invention, an embodiment of the present invention additionally provides a communications system, wherein the communications system includes the first wireless network device and the second wireless network device , and may additionally include one or more of the previous user equipment.
[0305] It should be understood that, in the modalities of the present invention, processor 110 or 210 can be a central processing unit (Central Processing Unit, CPU, for short), or ο processor can be another general purpose processor , a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable port arrangement (FPGA) or other programmable logic device, transistor logic device or discrete port, discrete hardware component, or similar. The general purpose processor can be a microprocessor, or the processor can be any conventional or similar processor.
[0306] Memory 120 or 220 may include a read-only memory and a random access memory, and provide instruction and data to processor 310. A portion of the memory may additionally include a non-volatile random access memory. For example, memory can additionally store information for a device type.
[0307] The 130 or 230 bus system can additionally include a power bus, a control bus, a status signal bus, and the like, in addition to a data bus. However, for clear description, several types of buses in the figure are marked as the bus system.
[0308] In a deployment process, the steps in the preceding methods can be implemented using a hardware integrated logic circuit on processor 110 or 210, or using instructions on a
Petition 870190069397, of 7/22/2019, p. 78/90
73/75 software form. The steps of the method disclosed with reference to the modalities of the present invention can be performed directly by a hardware processor, or can be performed using a combination of hardware in the processor and a software module. The software module can be located on a storage medium mature in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory or a register. The storage media is located in memory, and a processor reads information from memory and completes the steps in the preceding methods in combination with processor hardware. To avoid repetition, the details are not described again in this document.
[0309] It should also be understood that the terms first, second, third, fourth and several numbers in this specification are used for distinction to facilitate description only, and are not intended to limit the scope of the modalities of the present invention .
[0310] The term and / or, in this specification, describes only one association relationship to describe associated objects and represents that three relationships can exist. For example, A and / or B can represent the following three cases: Only A exists, both A and B exist and only B exists. In addition, the character / in this specification indicates, in general, a relationship or between the associated objects.
[0311] It should be understood that sequential numbers from the previous processes do not mean sequences of execution in various modalities of this request. The sequences of execution of the processes must be determined according to the functions and internal logic of the processes, and must not be interpreted as any limitation in the processes of implementation of the modalities of the present invention.
[0312] A person of ordinary skill in the art may be aware that, in combination with the examples described in the modalities disclosed in this specification, algorithm units and steps can be implemented by electronic hardware or a combination of computer software and electronic hardware . Whether the functions are performed by hardware or software depends on particular applications and
Petition 870190069397, of 7/22/2019, p. 79/90
74/75 design of technical solutions. A person skilled in the art can use different methods to implement the functions described for each particular application, but the deployment should not be considered to extend beyond the scope of this application.
[0313] It can be clearly understood by a person skilled in the art that, for the purpose of a convenient and brief description, for a detailed process of operation of the antecedent system, apparatus and unit, reference can be made to a corresponding process in the antecedent modalities method, and the details are not described again in this document.
[0314] In the various modalities provided in this application, it should be understood that the system, apparatus and method revealed can be implemented in other ways. For example, the described device modality is just an example. For example, the unit division is just a logical function division and can be another division in actual deployment. For example, a plurality of units or components can be combined or integrated into another system, or some characteristics can be ignored or not realized. In addition, mutual couplings or direct couplings or communication connections displayed or discussed can be deployed using some interfaces. Indirect couplings or communication connections between devices or units can be implemented in electronic, mechanical or other ways.
[0315] The units described as separate parts may or may not be physically separated, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed in a plurality of network units. Some or all of the units can be selected based on real requirements to achieve the objectives of the modalities solutions.
[0316] In addition, the functional units, in the modalities of this order, can be integrated into a processing unit, or each of the units can exist physically alone, or two or more units are integrated into one unit.
[0317] When functions are deployed as a functional software unit and marketed or used as a product
Petition 870190069397, of 7/22/2019, p. 80/90
75/75 independent, functions can be stored on computer-readable storage media. Based on this understanding, the technical solutions in this application contribute, in an essential or in part, to the prior art, or some of the technical solutions may be implemented in the form of a software product. The software product is stored on a storage medium, and includes several instructions for instructing a computer device (which can be a personal computer, a server or a network device) to perform all or some of the steps in the methods described the terms of this request. The preceding storage media includes: any media that can store program code, such as a USB flash drive, a removable hard drive, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk.
[0318] The foregoing descriptions are only specific implementations of this application, but are not intended to limit the scope of protection of this application. Any variation or replacement promptly found by a person skilled in the art within the technical scope revealed in this order must be covered by the scope of protection of this order. Therefore, the scope of protection of this application must be subject to the scope of protection of the claims.

权利要求:
Claims (49)
[1]
1. Signal transmission method, comprising:
receiving a first signal from a first wireless network device; and determining spatial information for a second signal to be transmitted based on the first signal.
[2]
2. Signal transmission method, comprising:
transmitting a first signal to a terminal device; and receiving a second signal from the terminal device, wherein the first signal is a reference to spatial information from the second signal.
[3]
A method according to claim 1, further comprising:
receiving second indication information from a second wireless network device, where the second indication information is used to indicate that the first signal is a reference to the spatial information of the second signal, and the second wireless network device is the same or different from the first wireless network device.
[4]
A method according to claim 2, further comprising:
transmitting second indication information to the terminal device, wherein the second indication information is used to indicate that the first signal is the reference for the spatial information of the second signal.
[5]
Method according to any one of claims 1 to 4, wherein the first signal comprises a non-zero power reference signal, and / or the second signal comprises a reference signal, wherein the power reference signal nonzero comprised in the first signal is at least one of a nonzero power reference signal used to obtain channel status information, a nonzero power reference signal used for demodulation, and a nonzero power reference signal used for beam management, and the reference signal comprised in the second signal is at least one of a reference signal used for demodulation and a reference signal used for uplink channel measurement.
[6]
6. Method according to any one of claims 1 to 4, in
Petition 870190069397, of 7/22/2019, p. 82/90
2/9 that the first signal comprises at least one of a nonzero power reference signal used to obtain channel status information, a nonzero power reference signal used for demodulation, a nonzero power reference signal used for beam management, a sync signal, and a tracking RS tracking reference signal used for time and frequency tracking and synchronization.
[7]
Method according to any one of claims 1 to 4, and 6, wherein the second signal comprises at least one of an uplink reference signal, an uplink data signal, and a control signal. uplink.
[8]
Method according to any one of claims 3 to 7, wherein the second indication information is carried on higher layer signaling, or carried on physical layer signaling, or carried on higher layer signaling and signaling physical layer.
[9]
A method according to any one of claims 1, 3, and 5 to 8, further comprising:
determining a transmit power of an uplink signal to be transmitted based on a power received from the first signal, wherein the uplink signal comprises the second signal and / or a signal associated with the second signal; and / or adjusting an uplink transmission timing advance based on a variation of the first signal receiving time; and transmitting an uplink signal based on the adjusted uplink transmission timing advance, wherein the uplink signal comprises the second signal and / or a signal associated with the second signal.
[10]
A method according to claim 9, wherein the signal associated with the second signal comprises an uplink data signal.
[11]
A method according to any one of claims 1 to 10, wherein the spatial information of the second signal is additionally used to determine spatial information of the signal associated with the second signal.
[12]
12. Method according to any one of claims 1, 3, and 5
Petition 870190069397, of 7/22/2019, p. 83/90
3/9 to 11, additionally comprising:
determine, based on the spatial information of the second signal, the spatial information of the signal associated with the second signal.
[13]
13. The method of claim 11 or 12, wherein the signal associated with the second signal comprises at least one of an uplink data signal, an uplink control channel, and a reference signal used for demodulation. uplink.
[14]
A method according to any one of claims 9 to 13, wherein determining a transmission power of an uplink signal to be transmitted based on a power received from the first signal comprises:
receiving information used to indicate a transmission power of the first signal, in which the indication information is carried in an information element in RRC signaling;
receive the first signal, and measure and obtain the power received from the first signal;
obtain a loss of path of the first signal based on the power received from the first signal and the transmission power of the first signal which is indicated by the information indicating the transmission power of the first signal, where the loss of path is equal to a difference between the transmit power and a received filtered reference signal power; and determining, based on path loss or an open circuit control parameter related to path loss, the uplink transmission power used to transmit the uplink data signal.
[15]
A method according to any one of claims 1, 3, and 5 to 14, wherein determining spatial information from a second signal to be transmitted based on the first signal comprises:
determine the spatial information of the second signal to be transmitted based on spatial information of the first signal.
[16]
16. Method according to any of claims 2, 4 to 8, 11, and 13, wherein the first signal is a reference to spatial information of the second signal comprises: the spatial information of the first signal is a reference to the information the second signal.
Petition 870190069397, of 7/22/2019, p. 84/90
4/9
[17]
17. Method according to any one of claims 1 to 16, wherein the second indication information is comprised in configuration information of the first signal.
[18]
18. The method of claim 17, wherein the configuration information of the first signal comprises at least one of a definition field measuring the channel status information of the first signal, a process field of the first signal, a first signal resource field, first signal antenna port information field, and first signal beam information field.
[19]
19. Method according to any one of claims 3 to 18, wherein the second indication information comprises several bits, the first signal corresponds to at least one among the several bits, and the at least one bit indicates that the first signal serves as the reference for the spatial information of the second signal.
[20]
20. The method of claim 19, wherein the second indication information is comprised in the definition field of measuring channel status information of the first signal or in the process field of the first signal.
[21]
21. Method according to any of claims 3 to 19, wherein the second indication information is a field with a Boolean value, or the second indication information exists only when used to indicate that the first signal serves as the reference for the spatial information of the second signal.
[22]
22. The method of claim 21, wherein the second indication information is comprised of at least one of the first signal's resource field, the first signal's antenna port information field, and the information field beam of the first signal.
[23]
23. The method of any one of claims 1, 5 to 7, and 9 to 14, wherein determining the spatial information of a second signal to be transmitted based on the first signal comprises:
determining that the first signal is a reference signal for the spatial information of the second signal; and determining the spatial information of the second signal to be transmitted based on the first signal.
Petition 870190069397, of 7/22/2019, p. 85/90
5/9
[24]
24. The method of claim 23, wherein determining that the first signal is a reference signal for the spatial information of the second signal comprises:
determine, by means of the terminal device, that the first signal has a characteristic of the reference signal for the spatial information of the second signal.
[25]
25. The method of any of claims 2, 3 to 5, 9, and 11, wherein the first signal is a reference for spatial information of the second signal comprises:
the first signal has a characteristic of a reference signal for the spatial information of the second signal.
[26]
26. The method of claim 24 or 25, wherein the reference signal characteristic for the spatial information of the second signal comprises signal resource information, the resource information comprises at least one of the antenna port information, resource identifier information, channel state information measurement definition identifier information, and process identifier information, and the signal comprises at least one of a downlink control signal, a power reference signal not zero, and a signal used for beam management.
[27]
27. The method of any one of claims 1 to 26, wherein the spatial information of the second signal comprises a transmission angle of the second signal, and the transmission angle of the second signal is determined based on an angle of arrival of the second signal. first sign.
[28]
28. The method of any one of claims 1, 3 to 5, and 9 to 14, further comprising:
receive first referral information from the second wireless network device, where the first referral information is used to indicate that a quasi-colocalization relationship to spatial information exists between the second signal and the first signal, and the second wireless network device is the same or different from the first wireless network device.
[29]
29. Method according to any one of claims 2, 5 to 8,
14, 16, and 17, further comprising:
Petition 870190069397, of 7/22/2019, p. 86/90
6/9 transmitting first indication information to the terminal device, where the first indication information is used to indicate that a quasi-colocalization relationship in relation to spatial information exists between the second signal and the first signal.
[30]
30. The method of claim 25, wherein the second wireless networking device is a wireless networking device serving the terminal device, and the first wireless networking device is the service wireless networking device. or a wireless network device other than the service wireless network device.
[31]
31. The method of any one of claims 34 to 36, wherein the first indication information is used to indicate that a quasi-colocalization relationship with respect to spatial information exists between the second signal and the first signal comprises:
the first referral information is used to indicate that a quasi-colocalization relationship to spatial information exists between second signal resource information and first signal resource information, and the resource information comprises at least one of the identifier information feature, antenna port information, channel status information measurement definition identifier information, and process identifier information.
[32]
32. The method of any one of claims 28 to 31, wherein the first indication information is comprised in a field used to indicate quasi-colocalization information; or the first indication information is comprised of downlink control information, and the downlink control information additionally comprises information used to indicate information related to uplink programming; or the first indication information is included in a field used to indicate information related to uplink programming.
[33]
33. Signal transmission method, comprising:
receiving a first signal from a first wireless network device; and determine a transmission power of a link signal
Petition 870190069397, of 7/22/2019, p. 87/90
7/9 uplink to be transmitted based on a power received from the first signal, in which the uplink signal comprises the second signal and / or a signal associated with the second signal, and spatial information from the second signal is related to spatial information from the second signal. first sign.
[34]
34. Signal transmission method, comprising:
receiving a first signal from a first wireless network device;
adjusting an uplink transmission timing advance based on a variation of the first signal receiving time; and transmitting an uplink signal based on the adjusted uplink transmission timing advance, wherein the uplink signal comprises the second signal and / or a signal associated with the second signal, and spatial information from the second signal is related to spatial information from the first signal.
[35]
35. The method of claim 33 or 34, further comprising:
receiving second indication information from a second wireless network device, where the second indication information is used to indicate that the first signal is a reference to the spatial information of the second signal, and the second wireless network device is the same or different from the first wireless network device.
[36]
36. The method of any one of claims 33 to 35, wherein the first signal comprises a non-zero power reference signal, and / or the second signal comprises a reference signal, wherein the power reference signal nonzero comprised in the first signal is at least one of a nonzero power reference signal used to obtain channel status information, a nonzero power reference signal used for demodulation, and a nonzero power reference signal used for beam management, and the reference signal comprised in the second signal is at least one of a reference signal used for demodulation and a reference signal used for uplink channel measurement.
[37]
37. The method of any one of claims 33 to 35, wherein the first signal comprises at least one of a
Petition 870190069397, of 7/22/2019, p. 88/90
8/9 nonzero power reference used to obtain channel status information, a nonzero power reference signal used for demodulation, a nonzero power reference signal used for beam management, a synchronization signal, and a tracking reference signal (Tracking RS) used for time and frequency tracking and synchronization.
[38]
38. The method of any one of claims 33 to 35, and 37, wherein the second signal comprises at least one of an uplink reference signal, an uplink data signal, and a control signal. uplink.
[39]
39. Method according to any one of claims 35 to 38, wherein the second indication information is carried in radio resource control (RRC) signaling.
[40]
40. The method of any one of claims 33 to 39, wherein the signal associated with the second signal comprises an uplink data signal.
[41]
41. The method of any one of claims 33 to 40, wherein the spatial information of the second signal is additionally used to determine spatial information of the signal associated with the second signal.
[42]
42. The method of any one of claims 33 and 35 to 41, wherein determining a transmit power of an uplink signal to be transmitted based on a power received from the first signal comprises:
receiving information used to indicate a transmission power of the first signal, in which the indication information is carried in an information element in RRC signaling;
receive the first signal, and measure and obtain the power received from the first signal;
obtain a loss of path of the first signal based on the power received from the first signal and the transmission power of the first signal which is indicated by the information indicating the transmission power of the first signal, where the loss of path is equal to a difference between the transmit power and a received filtered reference signal power; and determine, based on path loss or an open circuit control parameter related to path loss, the
Petition 870190069397, of 7/22/2019, p. 89/90
9/9 uplink transmission used to transmit the uplink data signal.
[43]
43. Signal transmission apparatus, comprising a processor, a memory, and a transceiver unit, in which the memory is configured to store an instruction, the processor is configured to execute the instruction stored in memory, to control the transceiver unit to receive and transmitting signals, and when the processor executes the instruction stored in memory, the method as defined in any one of claims 1 to 42 is implemented.
[44]
44. Apparatus according to claim 43, wherein the transceiver unit is a transceiver or an input / output interface.
[45]
45. Communications apparatus, configured to carry out the method as defined in any of claims 1 to 42.
[46]
46. Computer-readable storage media, comprising a computer program, wherein when the computer program is executed by a processor, it causes the processor to perform the method as defined in any of claims 1 to 52.
[47]
47. Communications apparatus, comprising:
a module configured to receive a first signal from a first wireless network device; and a module configured to determine spatial information for a second signal to be transmitted based on the first signal.
[48]
48. Communications apparatus, comprising:
a module configured to transmit a first signal to a terminal device; and a module configured to receive a second signal from the terminal device, where the first signal is a reference for spatial information of the second signal.
[49]
49. A communications system, comprising the apparatus as defined in claim 47 and the apparatus as defined in claim 48.

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WO2020237408A1|2019-05-24|2020-12-03|富士通株式会社|Method and apparatus for processing signal|

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CN112584482A|2019-09-27|2021-03-30|华为技术有限公司|Satellite communication method and device|

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WO2021077336A1|2019-10-23|2021-04-29|Telefonaktiebolaget Lm Ericsson |Method and apparatus for multi-user multi-antenna transmission|

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WO2021114059A1|2019-12-09|2021-06-17|华为技术有限公司|Communication method and apparatus|

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WO2022021370A1|2020-07-31|2022-02-03|Zte Corporation|Method for reference signal design and configuration|

法律状态:
2021-10-13| B350| Update of information on the portal [chapter 15.35 patent gazette]|

优先权:

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申请号 | 申请日 | 专利标题

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CN201710011409|2017-01-06|

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CN201710687933.6A|CN108282198B|2017-01-06|2017-08-11|Signal transmission method and device|

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PCT/CN2018/071786|WO2018127181A1|2017-01-06|2018-01-08|Signal transmission method and apparatus|

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