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WO2024032241A1 - Procédé de rapport de composante de domaine fréquentiel, et appareil - Google Patents

Procédé de rapport de composante de domaine fréquentiel, et appareil Download PDF

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Publication number
WO2024032241A1
WO2024032241A1 PCT/CN2023/104558 CN2023104558W WO2024032241A1 WO 2024032241 A1 WO2024032241 A1 WO 2024032241A1 CN 2023104558 W CN2023104558 W CN 2023104558W WO 2024032241 A1 WO2024032241 A1 WO 2024032241A1
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WO
WIPO (PCT)
Prior art keywords
information
frequency domain
indicate
terminal device
trps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/104558
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English (en)
Chinese (zh)
Inventor
张笛笛
王潇涵
李婷
金黄平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2024032241A1 publication Critical patent/WO2024032241A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams

Definitions

  • the present application relates to the field of wireless communication technology, and in particular, to a method and device for reporting frequency domain components.
  • the fifth generation (5G) communication system has higher requirements for system capacity, spectrum efficiency and other aspects.
  • large-scale multiple input multiple output (MIMO) technology plays a crucial role in the spectral efficiency of the system.
  • MIMO multiple input multiple output
  • the network device needs to determine a specific precoding codebook based on the channel state information (CSI) of the downlink channel reported by the terminal device.
  • CSI channel state information
  • multiple TRPs form a TRP collaboration set, and multiple TRPs in the collaboration set cooperate with each other to transmit data for terminal devices.
  • the network device needs to obtain the CSI of the downlink channel between the terminal device and each TRP in the TRP cooperation set.
  • the CSI reported by the terminal device needs to include indication information of the frequency domain component selected by the terminal device for each TRP to enable the network device to determine the location of the downlink data transmitted by each TRP.
  • the precoding codebook i.e. precoding matrix
  • the terminal equipment separately reports the indication information of the frequency domain component selected by it for each TRP. How terminal equipment can more effectively report indication information of frequency domain components corresponding to multiple TRPs and reduce air interface overhead is a technical problem that needs to be solved.
  • This application provides a method and device for reporting frequency domain components to reduce feedback overhead on the air interface.
  • this application provides a method for reporting frequency domain components, including: a terminal device obtains a TRP number, first information, and second information, wherein the TRP number is used to indicate the number of cooperative TRPs, and the first information is In order to indicate the number of frequency domain components, the second information is used to indicate the number of candidate frequency domain components; the terminal device generates third information, the third information is used to indicate the frequency domain component selected by the terminal device, and the third information occupy bits, where X is used to indicate the number of frequency domain component combinations, which is obtained based on the first information and the second information, X is an integer greater than or equal to 1; , K is an integer greater than 1; the terminal device sends the third information to the network device.
  • the method provided by the embodiment of the present application effectively reduces the air interface overhead and enables the terminal device to more effectively report the frequency domain components in the TRP cooperation scenario.
  • the terminal device obtains the TRP number, including: the terminal device receives fourth information from the network device, the fourth information is used to indicate K reference signal resources or K antenna port groups, The K reference signal resources or the K antenna port groups correspond to the K coordinated TRPs in a one-to-one manner.
  • the terminal device can directly obtain the number of cooperative TRPs from the network device, enabling the terminal device to select the frequency domain component.
  • the terminal device obtains the TRP number, including: the terminal device receives fifth information from the network device, the fifth information is used to indicate K′ reference signal resources or K′ antenna ports group, K′ is an integer greater than 1, the K′ reference signal resources or the K′ antenna port groups correspond to the K′ TRPs one-to-one; the terminal equipment is based on the K′
  • the TRP determines K cooperative TRPs, where K ⁇ K′.
  • the terminal device can determine the number of cooperative TRPs from the number of candidate cooperative TRPs acquired by the network device, enabling the terminal device to select the frequency domain component.
  • the terminal obtaining the first information and the second information includes: the terminal device receiving the first information and the second information from the network device.
  • the terminal device can directly obtain the indication information of the number of selected frequency domain components and the number of candidate frequency domain components from the network device, enabling the terminal device to select the frequency domain component.
  • the first information is used to indicate N, and the second information is used to indicate M.
  • the first information is used to indicate M
  • the second information is used to indicate N3.
  • the third information is included in precoding matrix indication PMI information, and the PMI information is carried in uplink control information UCI.
  • At least one of the first information, the second information, the fourth information and the fifth information is carried in at least one of the following signaling: radio resource management RRC signaling, medium access Control - Control element MAC-CE signaling and downlink control information DCI.
  • this application provides a method for reporting frequency domain components, including: the network device receives third information from a terminal device, the third information is used to indicate the frequency domain component selected by the terminal device, and the third information occupies bits, where X is used to indicate the number of frequency domain component combinations, and Frequency domain components used for transmission.
  • the method provided by the embodiment of the present application effectively reduces the air interface overhead, allowing the network device to more effectively obtain the frequency domain component selected by the terminal device in the TRP cooperation scenario, thereby determining the frequency domain component used for cooperative transmission.
  • the method further includes: the network device sending fourth information to the terminal device, the fourth information being used to indicate K reference signal resources or K antenna port groups, the K reference signal The resources or the K antenna port groups correspond to the K cooperative TRPs in a one-to-one correspondence.
  • the network device can directly notify the terminal device of the number of cooperative TRPs, enabling the terminal device to select the frequency domain component.
  • the method further includes: the network device sending fifth information to the terminal device, the fifth information being used to indicate K′ reference signal resources or K′ antenna port groups, where K′ is An integer greater than 1, the K′ reference signal resources or the K′ antenna port groups correspond to the K′ TRPs in a one-to-one manner; the K′ TRPs are used to determine the K cooperative TRPs, where K ⁇ K′.
  • the network device can directly notify the terminal device of the number of candidate cooperative TRPs, enabling the terminal device to determine the number of cooperative TRPs.
  • the method further includes: the network device sending first information and second information to the terminal device, the first information being used to indicate the number of frequency domain components, and the second information being used to indicate The number of candidate frequency domain components, the number of frequency domain component combinations is obtained based on the first information and the second information.
  • the network device can directly notify the terminal device of the number of frequency domain components to be selected and the indication information of the number of candidate frequency domain components, enabling the terminal device to select the frequency domain component.
  • the first information is used to indicate N, and the second information is used to indicate M.
  • the first information is used to indicate M
  • the second information is used to indicate N3.
  • the third information is included in precoding matrix indication PMI information, and the PMI information is carried in uplink control information UCI.
  • At least one of the first information, the second information, the fourth information and the fifth information is carried in at least one of the following signaling: radio resource management RRC signaling, medium access Control - Control element MAC-CE signaling and downlink control information DCI.
  • this application provides a method for reporting airspace components, including: the terminal device obtains a TRP number, sixth information, and seventh information, wherein the TRP number is used to indicate the number of cooperative TRPs, and the sixth information is used to Indicates the number of airspace components, the seventh information is used to indicate the number of candidate airspace components; the terminal device generates eighth information, the eighth information is used to indicate the airspace component selected by the terminal device, and the eighth information occupies bits, where Y is used to indicate the number of spatial component combinations, which is obtained based on the sixth information and the seventh information, Y is an integer greater than or equal to 1; K is used to indicate the number of TRPs, K is an integer greater than 1; the terminal device sends the eighth information to the network device.
  • the method provided by the embodiment of the present application effectively reduces the air interface overhead and enables the terminal device to more effectively report the airspace component in the TRP cooperation scenario.
  • the terminal device obtains the TRP number, including: the terminal device receives fourth information from the network device, the fourth information is used to indicate K reference signal resources or K antenna port groups, The K reference signal resources or the K antenna port groups correspond to the K coordinated TRPs in a one-to-one manner.
  • the terminal device can directly obtain the number of cooperative TRPs from the network device, enabling the terminal device to select the airspace component.
  • the terminal device obtains the TRP number, including: the terminal device receives fifth information from the network device, the fifth information is used to indicate K′ reference signal resources or K′ antenna ports group, K′ is an integer greater than 1, the K′ reference signal resources or the K′ antenna port groups correspond to K′ TRPs one-to-one; the terminal equipment determines K cooperative TRPs based on the K′ TRPs, where K ⁇ K′.
  • the terminal device can determine the number of cooperative TRPs from the number of candidate cooperative TRPs obtained by the network device, enabling the terminal device to select the airspace component.
  • the terminal obtaining the sixth information and the seventh information includes: the terminal device receiving the sixth information and the seventh information from the network device.
  • the terminal device can directly obtain the indication information of the number of selected airspace components and the number of candidate airspace components from the network device, enabling the terminal device to select airspace components.
  • the eighth information is included in precoding matrix indication PMI information, and the PMI information is carried in uplink control information UCI.
  • At least one of the sixth information, the seventh information, the fourth information and the fifth information is carried in at least one of the following signaling: radio resource management RRC signaling, medium access Control - Control element MAC-CE signaling and downlink control information DCI.
  • the present application provides a method for reporting airspace components, including: the network device receives eighth information from a terminal device, the eighth information is used to indicate the airspace component selected by the terminal device, and the eighth information occupies bits, where Y is used to indicate the number of air domain component combinations, and Y is an integer greater than or equal to 1; K is used to indicate the number of coordinated TRPs, and K is an integer greater than 1; the network device determines coordinated transmission based on the eighth information The spatial components used.
  • the method provided by the embodiments of the present application effectively reduces the air interface overhead and enables the network device to more effectively obtain the airspace component selected by the terminal device in the TRP cooperation scenario, thereby determining the airspace component used for cooperative transmission.
  • the method further includes: the network device sending fourth information to the terminal device, the fourth information being used to indicate K reference signal resources or K antenna port groups, the K reference signal The resources or the K antenna port groups correspond to the K cooperative TRPs in a one-to-one correspondence.
  • the network device can directly notify the terminal device of the number of cooperative TRPs, enabling the terminal device to select the airspace component.
  • the method further includes: the network device sending fifth information to the terminal device, the fifth information being used to indicate K′ reference signal resources or K′ antenna port groups, where K′ is An integer greater than 1, the K′ reference signal resources or the K′ antenna port groups correspond to the K′ TRPs in a one-to-one manner; the K′ TRPs are used to determine the K cooperative TRPs, where K ⁇ K′.
  • the network device can directly notify the terminal device of the number of candidate cooperative TRPs, enabling the terminal device to determine the number of cooperative TRPs.
  • the method further includes: the network device sending sixth information and seventh information to the terminal device, the sixth information is used to indicate the number of airspace components, and the seventh information is used to indicate the candidate The number of spatial component combinations is obtained based on the sixth information and the seventh information.
  • the network device can directly notify the terminal device of the number of airspace components to be selected and the indication information of the number of candidate airspace components, enabling the terminal device to select the airspace component.
  • the eighth information is included in precoding matrix indication PMI information, and the PMI information is carried in uplink control information UCI.
  • At least one of the sixth information, the seventh information, the fourth information and the fifth information is carried in at least one of the following signaling: radio resource management RRC signaling, medium access Control - Control element MAC-CE signaling and downlink control information DCI.
  • this application provides a method for reporting frequency domain components and air domain components, including: a terminal device obtains a TRP number, first information, second information, sixth information, and seventh information, wherein the TRP number is used for Indicates the number of cooperative TRPs.
  • the first information is used to indicate the number of frequency domain components.
  • the second information is used to indicate the number of candidate frequency domain components.
  • the sixth information is used to indicate the number of spatial domain components.
  • the seventh information is used to indicate the number of spatial domain components.
  • the terminal equipment In order to indicate the number of candidate air domain components; the terminal equipment generates third information, the third information is used to indicate the frequency domain component and air domain component selected by the terminal equipment, and the third information occupies bits indicate the frequency domain components and bits indicate spatial domain components, where X is used to indicate the number of frequency domain component combinations, which is obtained based on the first information and the second information. The number of airspace component combinations is obtained based on the sixth information and the seventh information. Y is an integer greater than or equal to 1; K is used to indicate the number of TRPs, and K is an integer greater than 1; the terminal equipment Send the third information to the network device.
  • the method provided by the embodiment of the present application effectively reduces the air interface overhead and enables the terminal device to more effectively report the frequency domain components and air domain components in the TRP cooperation scenario.
  • the terminal device obtains the TRP number, including: the terminal device receives fourth information from the network device, the fourth information is used to indicate K reference signal resources or K antenna port groups, The K reference signal resources or the K antenna port groups correspond to the K coordinated TRPs in a one-to-one manner.
  • the terminal device can directly obtain the number of cooperative TRPs from the network device, enabling the terminal device to select the frequency domain component.
  • the terminal device obtains the TRP number, including: the terminal device receives fifth information from the network device, the fifth information is used to indicate K′ reference signal resources or K′ antenna ports group, K′ is an integer greater than 1, the K′ reference signal resources or the K′ antenna port groups correspond to K′ TRPs one-to-one; the terminal equipment determines K cooperative TRPs based on the K′ TRPs, where K ⁇ K′.
  • the terminal device can determine the number of cooperative TRPs from the number of candidate cooperative TRPs obtained by the network device, so that The terminal device can select frequency domain components.
  • the terminal obtaining the first information and the second information includes: the terminal device receiving the first information and the second information from the network device.
  • the terminal device can directly obtain the indication information of the number of selected frequency domain components and the number of candidate frequency domain components from the network device, enabling the terminal device to select the frequency domain component.
  • the terminal obtaining the sixth information and the seventh information includes: the terminal device receiving the sixth information and the seventh information from the network device.
  • the terminal device can directly obtain the indication information of the number of selected airspace components and the number of candidate airspace components from the network device, enabling the terminal device to select airspace components.
  • the first information is used to indicate N, and the second information is used to indicate M.
  • the first information is used to indicate M
  • the second information is used to indicate N3.
  • the third information is included in precoding matrix indication PMI information, and the PMI information is carried in uplink control information UCI.
  • At least one of the first information, second information, fourth information, fifth information, sixth information and seventh information is carried in at least one of the following signaling: radio resources Manage RRC signaling, medium access control-control element MAC-CE signaling and downlink control information DCI.
  • the present application provides a method for reporting frequency domain components and air domain components, including: a network device receiving third information from a terminal device, the third information being used to indicate the frequency domain component and air domain component selected by the terminal device.
  • the third information occupies bits indicate the frequency domain components and bits indicate spatial domain components, where X is used to indicate the number of frequency domain component combinations, and X is an integer greater than or equal to 1; Seven pieces of information are obtained, Y is an integer greater than or equal to 1; K is used to indicate the number of coordinated TRPs, and K is an integer greater than 1; the network device determines the frequency domain component used for coordinated transmission based on the third information.
  • the method provided by the embodiment of the present application effectively reduces the air interface overhead, allowing the network device to more effectively obtain the frequency domain component and air domain component selected by the terminal device in the TRP cooperation scenario, thereby determining the frequency domain component and air domain component used for cooperative transmission.
  • the method further includes: the network device sending fourth information to the terminal device, the fourth information being used to indicate K reference signal resources or K antenna port groups, the K reference signal The resources or the K antenna port groups correspond to the K cooperative TRPs in a one-to-one correspondence.
  • the network device can directly notify the terminal device of the number of cooperative TRPs, enabling the terminal device to select the frequency domain component.
  • the method further includes: the network device sending fifth information to the terminal device, the fifth information being used to indicate K′ reference signal resources or K′ antenna port groups, where K′ is An integer greater than 1, the K′ reference signal resources or the K′ antenna port groups correspond to the K′ TRPs in a one-to-one manner; the K′ TRPs are used to determine the K cooperative TRPs, where K ⁇ K′.
  • the network device can directly notify the terminal device of the number of candidate cooperative TRPs, enabling the terminal device to determine the number of cooperative TRPs.
  • the method further includes: the network device sending first information and second information to the terminal device, the first information being used to indicate the number of frequency domain components, and the second information being used to indicate The number of candidate frequency domain components, the number of frequency domain component combinations is obtained based on the first information and the second information.
  • the network device can directly notify the terminal device of the number of frequency domain components to be selected and the indication information of the number of candidate frequency domain components, enabling the terminal device to select the frequency domain component.
  • the method further includes: the network device sending sixth information and seventh information to the terminal device, the sixth information is used to indicate the number of airspace components, and the seventh information is used to indicate the candidate The number of spatial component combinations is obtained based on the sixth information and the seventh information.
  • the network device can directly notify the terminal device of the number of airspace components to be selected and the indication information of the number of candidate airspace components, enabling the terminal device to select the airspace component.
  • the first information is used to indicate N, and the second information is used to indicate M.
  • the first information is used to indicate M
  • the second information is used to indicate N3.
  • the third information is included in precoding matrix indication PMI information, and the PMI information is carried in uplink control information UCI.
  • At least one of the first information, second information, fourth information, fifth information, sixth information and seventh information is carried in at least one of the following signaling: radio resources Manage RRC signaling, medium access control-control element MAC-CE signaling and downlink control information DCI.
  • a seventh aspect provides a terminal device for executing the first aspect or any possible implementation of the first aspect, or the third aspect or any possible implementation of the third aspect, or the fifth aspect.
  • a method in any possible implementation of the aspect or the fifth aspect may include a method for performing the first aspect or any possible implementation of the first aspect, or the third aspect. Or any possible implementation method of the third aspect, or a unit of the fifth aspect or any possible implementation method of the fifth aspect.
  • An eighth aspect provides a network device for performing the second aspect or any possible implementation of the second aspect, or the fourth aspect or any possible implementation of the fourth aspect, or the sixth aspect.
  • the network device may include a method for performing the second aspect or any possible implementation of the second aspect, or the fourth aspect. Or any possible implementation method of the fourth aspect, or a unit of the sixth aspect or any possible implementation method of the sixth aspect.
  • a terminal device in a ninth aspect, includes: a processor, a transceiver and a memory.
  • the memory is used to store computer execution instructions.
  • the processor executes the computer execution instructions stored in the memory, so that the terminal device executes the first aspect or any of the possible implementations of the first aspect. , or the method in the third aspect or any possible implementation of the third aspect, or the fifth aspect or any possible implementation of the fifth aspect.
  • a network device in a tenth aspect, includes: a processor, a transceiver and a memory. Wherein, the memory is used to store computer execution instructions. When the network device is running, the processor executes the computer execution instructions stored in the memory, so that the network device executes the second aspect or any of the possible implementations of the second aspect. , or the method in the fourth aspect or any possible implementation of the fourth aspect, or the sixth aspect or any possible implementation of the sixth aspect.
  • a communication device including a processor.
  • the processor is coupled to a memory and may be used to execute instructions in the memory to implement the first aspect or any possible implementation manner of the first aspect, or the third aspect or any possible implementation manner of the third aspect. , or the fifth aspect or the method in any possible implementation manner of the fifth aspect.
  • the communication device further includes a memory.
  • the communication device also includes a communication interface, a processor and a communication interface Interface coupling.
  • the communication device is a terminal device, and the communication interface may be a transceiver or an input/output interface.
  • the communication device is a chip configured in a terminal device.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a communication device including a processor.
  • the processor is coupled to a memory and may be used to execute instructions in the memory to implement the above second aspect or any possible implementation manner of the second aspect, or the fourth aspect or any possible implementation manner of the fourth aspect. , or the sixth aspect or the method in any possible implementation manner of the sixth aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication device is a network device
  • the communication interface may be a transceiver or an input/output interface.
  • the communication device is a chip configured in a network device.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a processing device including: an input circuit, an output circuit and a processing circuit.
  • the processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the first aspect or any possible implementation of the first aspect, or the third aspect or Any possible implementation manner of the third aspect, or the fifth aspect or the method in any possible implementation manner of the fifth aspect.
  • a processing device including: an input circuit, an output circuit and a processing circuit.
  • the processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the second aspect or any possible implementation of the second aspect, or the fourth aspect or Any possible implementation of the fourth aspect, or the method in the sixth aspect or any possible implementation of the sixth aspect.
  • a processing device including a processor and a memory.
  • the processor is used to read instructions stored in the memory, and can receive signals through a receiver and transmit signals through a transmitter to execute the first aspect or any possible implementation of the first aspect, or the third aspect or the third aspect. Any possible implementation of the third aspect, or the fifth aspect or the method in any possible implementation of the fifth aspect.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory may be provided separately from the processor.
  • a processing device including a processor and a memory.
  • the processor is used to read instructions stored in the memory, and can receive signals through a receiver and transmit signals through a transmitter to execute the second aspect or any of the possible implementations of the second aspect, or the fourth aspect or the third aspect. Any possible implementation manner of the fourth aspect, or the method in the sixth aspect or any possible implementation manner of the sixth aspect.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory may be provided separately from the processor.
  • the above-mentioned processor can be a chip, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a flip-flop, and various logic circuits.
  • the input signal received by the input circuit may be received and input by, for example, but not limited to, the receiver, and the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by the transmitter, and the input circuit and the output A circuit may be the same circuit that functions as an input circuit and an output circuit at different times.
  • the specific implementation of the processor and various circuits in the embodiments of this application The current method is not limited.
  • the memory can be non-transitory memory, such as read-only memory (ROM), which can be integrated on the same chip as the processor, or can be set in different On the chip, the embodiment of the present application does not limit the type of memory and the arrangement of the memory and the processor.
  • ROM read-only memory
  • sending instruction information may be a process of outputting instruction information from the processor
  • receiving capability information may be a process of the processor receiving input capability information.
  • the data output by the processor can be output to the transmitter, and the input data received by the processor can be from the receiver.
  • the transmitter and receiver can be collectively called a transceiver.
  • the processing device in the above-mentioned thirteenth aspect, fourteenth aspect, fifteenth aspect or sixteenth aspect may be a chip, and the processing device may be implemented by hardware or software.
  • the processing device can be a logic circuit, an integrated circuit, etc.; when implemented by software, the processing device can be a general processor, which is implemented by reading the software code stored in the memory, and the memory can be integrated in the processing device, It can be located outside the processing device and exist independently.
  • a computer-readable storage medium stores a program.
  • the program causes the computer to execute the first aspect or any possible implementation of the first aspect, or the second aspect. Or any possible implementation of the second aspect, or the third aspect, or any possible implementation of the third aspect, or the fourth aspect, or any possible implementation of the fourth aspect, or the fifth aspect aspect or any possible implementation manner of the fifth aspect, or the method in the sixth aspect or any possible implementation manner of the sixth aspect.
  • a computer program product includes: computer program code.
  • the computer program code When the computer program code is run by a communication unit, a processing unit, a transceiver, or a processor of a communication device, the computer program code causes the communication device to execute The first aspect or any possible implementation of the first aspect, or the second aspect or any possible implementation of the second aspect, or the third aspect or any possible implementation of the third aspect, Or the fourth aspect or any possible implementation of the fourth aspect, or the fifth aspect or any possible implementation of the fifth aspect, or the sixth aspect or any possible implementation of the sixth aspect method in.
  • Figure 1a is a schematic diagram of a communication system provided by an embodiment of the present application.
  • Figure 1b is a schematic diagram of another communication system provided by an embodiment of the present application.
  • Figure 2 is a schematic structural diagram of a network device and a terminal device provided by an embodiment of the present application
  • Figure 3 is a schematic structural diagram of a protocol stack of a communication device provided by an embodiment of the present application.
  • Figure 4 is a schematic diagram of a reporting flow of downlink channel CSI provided by an embodiment of the present application.
  • Figure 5 is a schematic diagram of another downlink channel CSI reporting process provided by an embodiment of the present application.
  • Figure 6 is a schematic flowchart of a frequency domain component reporting method provided by an embodiment of the present application.
  • Figure 7 is a schematic flowchart of a method for reporting airspace components provided by an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • Figure 9 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • Figure 10 is a schematic structural diagram of a chip provided by an embodiment of the present application.
  • "for indicating” may include direct indicating and indirect indicating.
  • indication information When describing a certain "instruction information" used to indicate A, it may include that the indication information directly indicates A or indirectly indicates A, but it does not mean that the indication information must contain A.
  • the information indicated by the indication information is called information to be indicated.
  • the information to be indicated can be directly indicated, such as the information to be indicated itself or the information to be indicated. Index indicating information, etc.
  • the information to be indicated may also be indirectly indicated by indicating other information, where there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while other parts of the information to be indicated are known or agreed in advance.
  • the indication of specific information can also be achieved by means of a pre-agreed (for example, protocol stipulated) arrangement order of each piece of information, thereby reducing the indication overhead to a certain extent.
  • the common parts of each piece of information can also be identified and indicated in a unified manner to reduce the instruction overhead caused by indicating the same information individually.
  • the specific indication method may also be various existing indication methods, such as, but not limited to, the above-mentioned indication methods and various combinations thereof.
  • the specific details of various indication methods can be referred to the existing technology, and will not be described again here.
  • the required indication method can be selected according to specific needs.
  • the embodiments of the present application do not limit the selected indication method. In this way, the indication methods involved in the embodiments of the present application should be understood to cover the indication methods to be indicated. Various ways to obtain information to be indicated.
  • the information to be instructed can be sent together as a whole, or can be divided into multiple sub-information and sent separately, and the sending period and/or sending timing of these sub-information can be the same or different.
  • the specific sending method is not limited in this application.
  • the sending period and/or sending timing of these sub-information may be predefined, for example, according to a protocol, or may be configured by the transmitting device by sending configuration information to the receiving device.
  • the configuration information may include, for example but not limited to, one or at least two of radio resource control (RRC) signaling, medium access control (medium access control, MAC) layer signaling and physical layer signaling. combination of species.
  • RRC radio resource control
  • MAC medium access control
  • the MAC layer signaling includes, for example, MAC control element (CE);
  • the physical (PHY) layer signaling for example, includes downlink control information (DCI).
  • DCI downlink control information
  • "predefinition” or “preconfiguration” can be achieved by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in the device (for example, including terminal equipment and network equipment).
  • This application is for its The specific implementation method is not limited.
  • "saving” may refer to saving in one or more memories.
  • the one or more memories may be a separate device, or may be integrated in an encoder or decoder, a processor, or a communication device.
  • the one or more memories may also be partially provided separately and partially integrated in the decoder, processor, or communication device.
  • the type of memory can be any form of storage medium, and this application is not limited thereto.
  • the “protocol” involved in the embodiments of this application may refer to a standard protocol in the communication field, which may include, for example, the long term evolution (long term evolution, LTE) protocol and the new radio access technology (new radio access technology, NR) protocol. As well as related protocols applied in future communication systems, this application does not limit this.
  • LTE long term evolution
  • NR new radio access technology
  • “at least one” refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the association of associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.
  • the character "/” generally indicates that the related objects are in an "or” relationship.
  • “At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items).
  • At least one of a, b and c can mean: a, or, b, or, c, or, a and b, or, a and c, or, b and c, or, a , b and c.
  • a, b and c can be single or multiple respectively.
  • the technical solution provided by this application can be applied to various communication systems, such as: LTE system, LTE frequency division duplex (FDD) system, fifth generation (5th Generation, 5G) mobile communication system or NR, future mobile Communication systems or multiple communication integration systems (such as sixth-generation mobile communication systems), etc.
  • LTE system LTE frequency division duplex (FDD) system
  • FDD frequency division duplex
  • 5G fifth generation
  • 5G fifth generation
  • NR future mobile Communication systems or multiple communication integration systems
  • sixth-generation mobile communication systems such as sixth-generation mobile communication systems
  • the 5G mobile communication system can include a non-standalone (NSA) system and a standalone (SA) system.
  • the application scenarios of the technical solution provided by this application can include a variety of applications, such as machine type communication (MTC), long term evolution-machine (LTE-M), and device-to-device (MTC).
  • MTC machine type communication
  • LTE-M long term evolution-machine
  • MTC device-to-device
  • -to device D2D
  • M2M machine to machine
  • IoT Internet of things
  • macro and micro communications enhanced mobile broadband (eMBB), ultra-high reliability and ultra-high reliability Low latency communication (ultra reliable&low latency communication, uRLLC) and massive IoT communication (massive machine type communication, mMTC) and other scenarios.
  • eMBB enhanced mobile broadband
  • uRLLC ultra-high reliability and ultra-high reliability Low latency communication
  • mMTC massive IoT communication
  • the IoT scenario can include, for example, the Internet of Vehicles.
  • the communication methods in the Internet of Vehicles system are collectively called vehicle to other devices (V2X,
  • the V2X can include: vehicle to vehicle (vehicle to other devices).
  • vehicle (V2V) communication vehicle to infrastructure (vehicle to infrastructure, V2I) communication
  • V2V vehicle to vehicle
  • V2I vehicle to infrastructure
  • V2P vehicle to pedestrian
  • V2N vehicle to network
  • V2N vehicle to network
  • These scenarios may include but are not limited to: communication scenarios between terminals, communication scenarios between network devices, communication scenarios between network devices and terminals, etc.
  • the technical solution of the present application is applied to the communication between network equipment and terminals as an example.
  • the communication system includes a plurality of network devices and at least one terminal device. As shown in Figure 1a, the communication system includes three network devices, namely TRP 1 , TRP 2 and TRP 3 , and one terminal device, namely user equipment (UE). TRP 1 , TRP 2 and TRP 3 cooperate with each other to jointly communicate with the UE. TRP 1 , TRP 2 and TRP 3 can use coordinated multipoint (Coordinated multipoint, CoMP) technology to provide communication services for UE.
  • CoMP Coordinatd multipoint
  • the CoMP technology may include coherent joint transmission (CJT) and non-coherent joint transmission (NCJT).
  • TRP 1 , TRP 2 and TRP 3 constitute the TRP protocol of the UE. Collection of works.
  • the TRP cooperation set may include a control node, such as TRP 1 .
  • the control node can determine and send configuration information to the UE, and receive reported information from the UE.
  • the control node can also send configuration information to other TRPs (such as TRP 2 or TRP 3 ) and forward part or all of the information reported by the UE.
  • Figure 1b is a schematic diagram of yet another communication system provided by an embodiment of the present application.
  • the communication system includes at least one base station, at least one UE, and multiple TRPs.
  • the TRP cooperation set of the UE includes TRP 1 , TRP 2 and TRP 3 .
  • the base station can be used to control (or schedule) TRP 1 , TRP 2 and TRP 3 .
  • the dotted lines in Figure 1b indicate that the three TRPs TRP 1 , TRP 2 and TRP 3 can be controlled by the base station.
  • the base station may determine the configuration information and send the configuration information to a TRP (such as TPR 1 , TRP 2 or TRP 3 , etc.).
  • TRP1 can send the configuration information to the UE.
  • the base station can directly send configuration information to the UE.
  • TRP (such as TPR 1 , TRP 2 or TRP 3 , etc.) can receive reported information from the UE.
  • the base station may receive the information reported from the UE, and may also forward part or all of the information reported by the UE to a TRP (such as TPR 1 , TRP 2 or TRP 3 , etc.).
  • TRP such as TPR 1 , TRP 2 or TRP 3 , etc.
  • multiple TRPs can cooperate to communicate with the UE, which can be called a multi-site communication scenario, in which one TRP can be understood as one site. If only one TRP communicates with the UE, it is called a single-site communication scenario.
  • the communication systems shown in Figures 1a and 1b are only examples, and reference can be made to the following for specific descriptions of each communication device.
  • Each of the above communication devices can be configured with multiple antennas.
  • the plurality of antennas may include at least one transmit antenna for transmitting signals and at least one receive antenna for receiving signals.
  • each communication device additionally includes a transmitter chain and a receiver chain.
  • Those of ordinary skill in the art can understand that they may include multiple components related to signal transmission and reception (such as processors, modulators, multiplexers). , demodulator, demultiplexer or antenna, etc.). Therefore, network equipment and terminal equipment can communicate through multi-antenna technology.
  • the communication system may also include other network entities such as a network controller and a mobility management entity, and the embodiments of the present application are not limited thereto.
  • FIG. 1a and FIG. 1b are only schematic diagrams and do not constitute a limitation on the applicable scenarios of the technical solution provided by this application.
  • the network device may be any device with wireless transceiver functions.
  • the equipment includes but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (Node B, NB), base station controller (BSC) , base transceiver station (BTS), home base station (e.g., home evolved NodeB, or home Node B, HNB), micro base station (also known as small station), macro base station, relay station, access point, IoT or eNB in narrowband IoT (narrow band-internet of things, NB-IoT), access point (AP), wireless relay node, wireless backhaul node in wireless fidelity (WiFi) system, Transmission point (TP) or transmission and reception point (TRP), etc., can also be 5G, such as NR, gNB in the system, or transmission point (TRP or TP), in the 5G system
  • NR NR
  • gNB in the system
  • TRP or TP transmission point
  • TRP transmission and reception point
  • the network equipment mentioned in this application usually includes a baseband unit (BBU), a remote radio unit (RRU) or an active antenna unit (AAU), an antenna, and Feeder used to connect RRU/AAU and antenna.
  • BBU baseband unit
  • RRU remote radio unit
  • AAU active antenna unit
  • Feeder used to connect RRU/AAU and antenna usually includes a baseband unit (BBU), a remote radio unit (RRU) or an active antenna unit (AAU), an antenna, and Feeder used to connect RRU/AAU and antenna.
  • BBU baseband unit
  • RRU remote radio unit
  • AAU active antenna unit
  • Feeder used to connect RRU/AAU and antenna Feeder used to connect RRU/AAU and antenna.
  • BBU baseband unit
  • RRU remote radio unit
  • AAU active antenna unit
  • Feeder used to connect RRU/AAU and antenna usually includes a baseband unit (BBU), a remote radio unit (RRU) or an active antenna unit (AAU), an antenna, and Feeder used
  • all BBUs can also be centralized and placed in the Central Office (CO). Through this centralized approach, the number of base station computer rooms can be greatly reduced, and supporting equipment can be reduced, especially Air conditioning energy consumption can be reduced Reduce a lot of carbon emissions.
  • the scattered BBUs after the scattered BBUs are centralized into a BBU baseband pool, they can be managed and scheduled uniformly, making resource allocation more flexible. In this mode, all physical base stations evolve into virtual base stations. All virtual base stations share user data transmission and reception, channel quality and other information in the BBU baseband pool, and cooperate with each other to realize joint scheduling.
  • base stations may include centralized units (CU) and distributed units (DU).
  • the base station may also include an active antenna unit (AAU).
  • CU implements some functions of the base station, and DU implements some functions of the base station.
  • CU is responsible for processing non-real-time protocols and services, implementing wireless resource control, and packet data convergence protocol (PDCP) layer functions.
  • DU is responsible for processing physical layer protocols and real-time services, implementing wireless link control (radio link control, RLC), media access control and physical (physical, PHY) layer functions.
  • RLC wireless link control
  • AAU implements some physical layer processing functions, radio frequency processing and active antenna related functions.
  • the network device may be a device including one or more of a CU node, a DU node, and an AAU node.
  • the CU can be divided into network equipment in the RAN, or the CU can be divided into network equipment in the core network (core network, CN), which is not limited in this application.
  • the network equipment provides services for the cell, and the terminal equipment communicates with the cell through the transmission resources (for example, frequency domain resources, or spectrum resources) allocated by the network equipment.
  • the cell may belong to a macro base station (for example, macro eNB or macro gNB, etc.) , or it can belong to the base station corresponding to a small cell.
  • the small cell here can include: metro cell, micro cell, pico cell, femto cell, etc. , these small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission services.
  • the terminal equipment may also be called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, Terminal, wireless communication equipment, user agent or user device.
  • UE user equipment
  • the terminal device may be a device that provides voice/data connectivity to the user, such as a handheld device, a vehicle-mounted device, etc. with wireless connectivity capabilities.
  • some examples of terminals can be: mobile phones, tablets, computers with wireless transceiver functions (such as laptops, handheld computers, etc.), mobile Internet devices (mobile internet device, MID), virtual reality (virtual reality, VR) equipment, augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in telemedicine Terminals, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless Telephone, session initiation protocol (SIP) telephone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication capabilities, computing device or connection to other processing equipment of wireless modems, vehicle-mounted equipment, wearable devices, terminal equipment in 5G networks or future evolved public land mobile communication networks (public land mobile network, PLMN) or non-public networks
  • wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones. Use, such as various types of smart bracelets, smart jewelry, etc. for physical sign monitoring.
  • the terminal device may also be a terminal device in the IoT system.
  • IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-computer interconnection and object interconnection. IoT technology can achieve massive connections, deep coverage, and terminal power saving through narrowband (NB) technology, for example.
  • NB narrowband
  • terminal equipment can also include sensors such as smart printers, train detectors, and gas stations. Its main functions include collecting data (some terminal equipment), receiving control information and downlink data from network equipment, and sending electromagnetic waves to transmit uplink data to network equipment. .
  • Terminals are used to provide voice and/or data connectivity services to users.
  • the terminal may have different names, such as user equipment (UE), access terminal, terminal unit, terminal station, mobile station, mobile station, remote station, remote terminal, mobile device, wireless communication device, terminal agent or terminal device, etc.
  • the terminal 20 can be various handheld devices, vehicle-mounted devices, wearable devices, and computers with communication functions, which are not limited in this application.
  • the handheld device may be a smartphone.
  • the vehicle-mounted device may be a vehicle-mounted navigation system.
  • Wearable devices can be smart bracelets or VR devices.
  • the computer can be a PDA computer, a tablet computer, and a laptop computer.
  • Figure 2 is a schematic diagram of the hardware structure of a network device and a terminal device provided by an embodiment of the present application.
  • the terminal device 100 includes a processor 101 and a transceiver 103.
  • the terminal device 100 may also include an output device 104, an input device 105 and a memory 102.
  • the processor 101, the memory 102 and the transceiver 103 communicate with each other through internal connection paths, the memory 102 is used to store instructions, and the processor 101 is used to execute the instructions stored in the memory 102 to control the transceiver 103 to send signals and/or receive signals. .
  • the processor 101 has signal processing capabilities and can be a general central processing unit (CPU), a microprocessor, a digital signal processor (DSP), or an application-specific integrated circuit. , ASIC), field programmable gate array (FPGA), neural processing unit (NPU), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • the processor 101 may also include multiple CPUs, and the processor 101 may be a single-CPU processor or a multi-CPU processor.
  • Processor 101 may refer to one or more devices, circuits, or processing cores for processing data (eg, computer program instructions).
  • the memory 102 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory (RAM)) or other type that can store information and instructions.
  • a dynamic storage device can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc (compact disc read-only memory, CD-ROM) or other optical disk storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be used by a computer Any other media that can be accessed is not limited by this application.
  • the memory 102 may exist independently and be connected to the processor 101 through an internal connection path; the memory 102 may also be integrated with the processor 101. Among them, the memory 102 is used to store application program code for executing the solution of the present application, and the processor 101 controls the execution. The processor 101 is used to execute the computer program code stored in the memory 102, thereby implementing the method provided by the embodiment of the present application.
  • the transceiver 103 can use any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • Transceiver 103 may include a transmitter Tx and/or a receiver Rx.
  • the transceiver 103 may further include an antenna, and the number of antennas may be one or more.
  • the processor 101, the memory 102 and the transceiver 103 may be devices integrated on different chips.
  • the processor 101 and the memory 102 can be integrated in a baseband chip, and the transceiver 103 can be integrated in a baseband chip. in the radio frequency chip.
  • the processor 101, the memory 102 and the transceiver 103 may also be devices integrated on the same chip.
  • the transceiver 103 may also be a communication interface, such as an input/output interface, a circuit, etc.
  • the transceiver 103, the processor 101 and the memory 102 can be integrated in the same chip, such as a baseband chip.
  • the output device 104 communicates with the processor 101 and can display information in a variety of ways.
  • the output device 104 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. wait.
  • Input device 105 communicates with processor 101 and may receive user input in a variety of ways.
  • the input device 105 may be a mouse, a keyboard, a touch screen device, a sensing device, or the like.
  • Network device 200 includes processor 201 and transceiver 203.
  • the network device 200 may also include a memory 202 and a network interface 204.
  • the processor 201, the memory 202, the transceiver 203 and the network interface 204 are connected through a bus.
  • the network interface 204 is used to connect to the core network device through a link (such as the S1 interface), or to connect to the network interfaces of other network devices through a wired or wireless link (such as the X2/Xn interface) (not shown in the figure). ), this application does not limit this.
  • the relevant description of the processor 201, the memory 202, and the transceiver 203 may refer to the description of the processor 101, the memory 102, and the transceiver 103 in the terminal device 100, which will not be described again here.
  • control plane and data plane protocol stack structure of the communication device including network equipment and terminal equipment involved in this application is shown in Figure 3.
  • Both network equipment and terminal equipment can be equipped with the following modules:
  • RRC signaling interaction module a module used by network equipment and terminal equipment to send and receive RRC signaling.
  • the network equipment sends RRC signaling to the terminal equipment, and the terminal equipment receives RRC signaling from the network equipment.
  • MAC signaling interaction module A module used by network equipment and terminal equipment to send and receive MAC-CE signaling. For example, the network equipment sends MAC-CE signaling to the terminal equipment, and the terminal equipment receives MAC-CE signaling from the network equipment.
  • PHY signaling and data interaction module a module used by network equipment and terminal equipment to send and receive uplink/downlink control signaling and uplink/downlink data.
  • the network device sends a physical downlink control channel (PDCCH) to the terminal device, such as DCI in PDCCH, and the network device sends a physical downlink shared channel (PDSCH) to the terminal device, such as PDSCH in Downstream data.
  • the terminal device sends a physical uplink control channel (PUCCH) to the network device, such as the uplink control information (UCI) in the PUCCH, and the terminal device sends a physical uplink shared channel (physical uplink shared channel) to the network device.
  • PUSCH physical uplink shared channel
  • network equipment and terminal equipment can also include other communication modules, such as wireless link control (radio link control, RLC) module, packet data convergence protocol (packet data convergence protocol) , PDCP) module, or service data adaptation protocol (service data adaptation protocol, SDAP) module, etc. This application does not limit this.
  • RLC radio link control
  • PDCP packet data convergence protocol
  • SDAP service data adaptation protocol
  • the sending device can process the signal to be sent with the help of a precoding matrix that matches the channel resource when the CSI is known, so that the precoded signal to be sent adapts to the channel, thereby This improves the quality of signals received by the receiving device (such as signal to interference plus noise ratio (SINR), etc.), and reduces the complexity of eliminating inter-channel effects by the receiving device.
  • the sending device can send multiple parallel data streams occupying the same time-frequency resources to a receiving device, that is, single-user multiple-input multiple-output (SU-MIMO) ), the sending device and multiple receiving devices can also transmit data on the same time-frequency resources, that is, multiple user multiple input multiple output (MU-MIMO).
  • SU-MIMO single-user multiple-input multiple-output
  • MU-MIMO multiple user multiple input multiple output
  • the sending device can also perform precoding in other ways. For example, when the channel state information is not known, precoding is performed using a preset precoding matrix or a weighting processing method. For the sake of brevity, its specific content will not be repeated in this article.
  • Precoding matrix indicator It can be used to indicate the precoding matrix, and the sending device recovers the precoding matrix based on PMI.
  • the receiving device determines the precoding matrix through channel measurement and reports the PMI corresponding to the precoding matrix to the sending device.
  • the sending device determines the precoding for transmitting data to the receiving device based on the received PMI.
  • the precoding matrix may be a precoding matrix determined by the receiving device based on the channel matrix of each frequency domain unit. Frequency domain unit, that is, the unit of frequency domain resources, can represent different frequency domain resource granularities.
  • the frequency domain unit may be, but is not limited to, a subband, a resource block (RB), a subcarrier, a resource block group (RBG), or a precoding resource block group. PRG) etc.
  • One or more parts of the subband may be composed of one or more RBs and RGBs; for example, 1 RB corresponds to 12 consecutive subcarriers in the frequency domain, and 1 RBG corresponds to ⁇ 2 in the frequency domain. , 4, 8, 16 ⁇ RB; PRG is the precoding granularity, used to indicate how many RBs can use the same precoding.
  • the channel matrix may be determined by the receiving device through channel estimation or other methods or based on channel reciprocity.
  • the specific method for the receiving device to determine the precoding matrix is not limited to the above.
  • the specific implementation method can refer to the existing technology. For the sake of simplicity, they will not be listed here one by one.
  • the precoding matrix can be obtained by performing singular value decomposition (SVD) on the channel matrix or the covariance matrix of the channel matrix, or by performing eigenvalue decomposition (eigenvalue) on the covariance matrix of the channel matrix. decopomsition, EVD).
  • SVD singular value decomposition
  • eigenvalue eigenvalue decomposition
  • EVD decopomsition
  • the determination method of the precoding matrix can refer to the existing technology. For the sake of simplicity, we will not list them one by one here.
  • Antenna port Or called a port, it can be understood as a transmitting antenna recognized by the receiving device, or a transmitting antenna that can be distinguished in space.
  • An antenna port can be preconfigured for a virtual antenna, and a virtual antenna can be a physical antenna or a weighted combination of multiple physical antennas.
  • An antenna port can correspond to a reference signal. Therefore, an antenna port can be called a reference signal port, for example, a CSI reference signal (CSI-RS) port, a demodulation reference signal (DMRS) ) port, channel sounding reference signal (sounding reference signal, SRS) port, etc.
  • CSI-RS CSI reference signal
  • DMRS demodulation reference signal
  • SRS channel sounding reference signal
  • an antenna port can be called a transceiver unit (TxRU).
  • Spatial component It can also be called beam vector, spatial beam basis vector (spatial beam basis vector), and spatial basis vector.
  • the length of the spatial component can be the number B of transmit antenna ports in one polarization direction, where B is a positive integer greater than 1.
  • the spatial component is a column vector or row vector with a length of B, then the B column vectors or row vectors respectively correspond to B transmit antenna ports, which is not limited in this application.
  • Each element in the spatial component can represent the weight of each antenna port. Based on the weight of each antenna port represented by each element in the spatial component, linear superposition of the signals of each antenna port can form an area with strong signals in a certain direction or directions in space.
  • the spatial component may be determined based on a discrete Fourier transform (DFT) vector.
  • the spatial components can be DFT vectors.
  • the airspace component may be, for example, defined in the enhanced type II (eType II) codebook in the technical specification TS 38.214 of the 3rd generation partnership project (3GPP) version 16 (Release 16, R16).
  • Frequency domain component It can also be called frequency domain basis vector, which is a vector used to represent the variation pattern of the channel in the frequency domain.
  • a frequency domain component can represent a change pattern.
  • Multipath delay causes frequency selective fading, which is a change in the frequency domain channel. Therefore, different frequency domain components can be used to represent the changing rules of the channel in the frequency domain caused by delays on different transmission paths.
  • the length of the frequency domain component may be determined by the number of frequency domain units to be reported configured on the network side in the reporting bandwidth, or may be a protocol predefined value. This application does not limit this.
  • the reporting bandwidth may be indicated by, for example, the CSI reporting bandwidth (CSI-ReportingBand) carried in the CSI reporting configuration in higher layer signaling (such as an RRC message).
  • the frequency used by terminal equipment to send uplink data is different from the frequency used by network equipment to send downlink data, there is no complete channel reciprocity between the uplink channel and the downlink channel.
  • the CSI of the downlink channel is determined by the terminal device by measuring the downlink reference signal sent by the network device, and reported to the network device.
  • partial reciprocity information of the uplink channel and downlink channel is used. For example, the angle and delay of the uplink and downlink channels are reciprocal.
  • the network equipment measures the uplink reference signal sent by the terminal equipment and the terminal equipment.
  • the terminal device determines the CSI of the downlink channel and reports it to the network device.
  • Figure 4 provides a schematic diagram of the reporting process of downlink channel CSI, which corresponds to the first method above and includes the following steps:
  • S401 The network device sends channel measurement configuration information to the terminal device.
  • the channel measurement configuration information includes time-frequency resources used for channel measurement, etc.
  • the network device sends the downlink reference signal for channel measurement to the terminal device.
  • the downlink reference signal may be a downlink channel state information reference signal (channel state information reference signal, CSI-RS) or a demodulation reference signal (demodulation reference signal, DMRS), etc., which is not limited in this application.
  • CSI-RS channel state information reference signal
  • DMRS demodulation reference signal
  • the terminal equipment receives the downlink reference signal based on the channel measurement configuration information.
  • the terminal device determines the downlink channel CSI based on the received downlink reference signal, and reports it to the network device.
  • the CSI of the downlink channel includes any combination of the following items: precoding matrix indicator (precoding matrix indicator, PMI), rank indicator (rank indication, RI), channel quality indicator (channel quality indicator, CQI), channel status information Reference signal (channel state information reference signal, CSI-RS), resource indicator (CSI-RS resource indicator, CRI) and layer indicator (layer indicator, LI).
  • the PMI may include indication information of the frequency domain component selected by the terminal device, indication information of the spatial domain component, indication information of the non-zero combination coefficient, etc.
  • the network device determines the precoding matrix corresponding to the downlink data transmission based on the downlink channel CSI reported by the terminal device, and precodes the downlink data based on the precoding matrix before sending.
  • NP non-precoding
  • Figure 5 provides a schematic diagram of the reporting process of downlink channel CSI based on FDD partial reciprocity, which corresponds to the second method above and includes the following steps:
  • S501 The terminal device sends an uplink reference signal to the network device.
  • the uplink reference signal is a sounding reference signal (SRS).
  • SRS sounding reference signal
  • S502 The network device performs channel estimation on the uplink channel and obtains partial prior information of the downlink channel.
  • part of the a priori information of the downlink channel includes the angle and delay information of the downlink channel.
  • the angle and delay information of the downlink channel can be equivalent to the angle and delay information of the uplink channel obtained by the network device performing channel estimation on the uplink channel.
  • S503 The network device sends the precoded downlink reference signal.
  • the network device generates precoding based on some prior information of the downlink channel, such as angle and delay information.
  • the network device precodes the downlink reference signal and sends it to the terminal device.
  • the terminal equipment receives the precoded downlink reference signal and performs channel measurement.
  • the terminal device determines the downlink channel CSI based on the received precoded downlink reference signal, and reports it to the network device.
  • the CSI of the downlink channel includes any combination of the following items: precoding matrix indicator (precoding matrix indicator, PMI), rank indicator (rank indication, RI), channel quality indicator (channel quality indicator, CQI), channel status information Reference signal (channel state information reference signal, CSI-RS), resource indicator (CSI-RS resource indicator, CRI) and layer indicator (layer indicator, LI).
  • the PMI may include indication information of the frequency domain component selected by the terminal device, indication information of the spatial domain component, indication information of the non-zero combination coefficient, etc.
  • the downlink channel CSI reported by the terminal device in S504 may only be non-reciprocal information of the uplink and downlink channels.
  • the network device For the reciprocal information of the uplink and downlink channels, such as part of the prior information of the downlink channel, the network device has already obtained it in S502, so the terminal device does not need to feedback in this step, thereby saving feedback overhead.
  • the network device determines the precoding matrix corresponding to the downlink data transmission based on part of the prior information of the downlink channel and the downlink channel CSI reported by the terminal device in S504, and precodes the downlink data based on the precoding matrix. send.
  • the mechanism by which the network device determines the precoding codebook in this CSI reporting mode can be called a port selection (PS) codebook mechanism.
  • the precoding codebook (also called a precoding matrix) can be expressed in the following form:
  • the superscript H represents the conjugate transpose.
  • the precoding codebook of R16TypeII is the airspace selection matrix, indicating that 2L beams are selected from B airspace beams, is the frequency domain compression matrix, indicating that R columns are selected from the DFT matrix set, N3 is the number of frequency domain RB resources or the number of subbands, is the combination coefficient quantified according to the quantization criterion.
  • the port selection matrix which means selecting K 1 ports from B ports
  • the frequency domain compression matrix indicating that R columns are selected from the DFT matrix set
  • N3 is the number of frequency domain RB resources or the number of subbands
  • W 2 the weighting coefficient of the corresponding airspace/port and frequency domain component.
  • the network device needs to obtain the CSI of the downlink channel between the terminal device and each TRP in the TRP cooperation set to enable multiple TRPs to cooperate in the transmission of downlink data.
  • the downlink channel CSI reported by the terminal device needs to include indication information of the frequency domain component selected by the terminal device for each TRP to enable the network device to determine the precoding codebook used by each TRP to transmit downlink data.
  • the terminal device can separately report the indication information of the frequency domain component corresponding to each TRP.
  • multiple TRPs perform CJT cooperative transmission, multiple TRPs use the same time-frequency resources to jointly send data to the terminal device.
  • the number of frequency domain components selected by the terminal device is the same for each TRP.
  • multiple TRPs can use orthogonal time-frequency resources to jointly send data to the terminal device.
  • the number of frequency domain components selected by the terminal device can be the same. It can also be different.
  • the terminal device needs to use M bits to represent the frequency domain selected by it for each TRP in the TRP coordination set. component, the terminal device needs to use K ⁇ M bits to report the frequency domain component corresponding to the TRP cooperation set selected by the terminal device.
  • This reporting method can be called a method of separately indicating frequency domain components, that is, the terminal device separately reports the frequency domain components selected for each TRP.
  • the number of TRPs included in the TRP cooperation set increases, the air interface overhead of the corresponding frequency domain component reported by the terminal device will increase linearly. How to enable terminal equipment to report corresponding frequency domain components more efficiently and reduce air interface overhead is a technical problem that needs to be solved.
  • embodiments of the present application provide a frequency domain component reporting method to reduce air interface overhead as much as possible and improve the efficiency of frequency domain component reporting in TRP cooperation scenarios.
  • this reporting method for the frequency domain components of multiple TRPs selected by the terminal device, the terminal device uses a joint indication method of frequency domain components to report, which can save money compared with the method of separately indicating frequency domain components used in the prior art. Air interface overhead.
  • the terminal equipment shown in the following embodiments can be replaced by components configured in the terminal device (such as circuits, chips, chip systems or other functional modules capable of calling and executing programs, etc.); the network equipment shown in the following embodiments can be replaced They are components configured in network equipment (such as circuits, chips, chip systems, or other functional modules that can call and execute programs, etc.).
  • the channel information feedback can be implemented according to the method provided by the embodiment of the present application by running a program that records the code of the method provided by the embodiment of the present application.
  • Figures 6 and 7 are schematic flow charts of method embodiments of the present application, showing detailed communication steps or operations of the method, but these steps or operations are only examples, and the embodiments of the present application also Other operations or variations of the various operations in Figures 6 and 7 may be performed.
  • the various steps in FIGS. 6 and 7 may be performed in a different order than that presented in FIGS. 6 and 7 , and it is possible that not all operations in FIGS. 6 and 7 may be performed.
  • FIG. 6 shows a schematic flowchart of a frequency domain component reporting method provided by an embodiment of the present application.
  • the method 600 is applied to the interaction between a network device and a terminal device.
  • the network device may be a TRP in the TRP cooperation set of the terminal device, or it may be a device outside the TRP cooperation set that has the ability to control each TRP in the TRP cooperation set.
  • This application does not make any reference to this. limited.
  • This network device can communicate with any TRP in the TRP cooperation set.
  • the process shown in Figure 6 includes the following steps:
  • the terminal device obtains the TRP number, first information and second information.
  • the TRP number is used to indicate the number of TRPs included in the TRP coordination set of the terminal device, that is, the number of cooperative TRPs.
  • the number of TRPs in the TRP cooperation set is K, and K is an integer greater than 1.
  • the terminal device receives information configured by the network device to measure downlink reference signals sent by multiple TRPs.
  • the terminal device obtains the number of cooperative TRPs based on the configuration information.
  • the terminal device receives configuration information from the network device, where the configuration information is used to indicate K reference signal resources or K antenna port groups.
  • K reference signal resources are in one-to-one correspondence with K TRPs
  • K antenna port groups are in one-to-one correspondence with K TRPs. It should be understood that one of the K antenna port groups includes at least one antenna port. Therefore, the terminal device obtains the number K of cooperative TRPs through the configuration information.
  • the terminal device receives fourth information from the network device, where the fourth information is used to indicate K reference signal resources or K antenna port groups. The terminal device obtains the number K of cooperative TRPs according to the fourth information.
  • the terminal device receives configuration information from the network device, where the configuration information is used to indicate K′ reference signal resources or K′ antenna port groups.
  • K′ reference signal resources correspond to K′ TRPs on a one-to-one basis
  • K′ antenna port groups correspond to K′ TRPs on a one-to-one basis.
  • the terminal device determines K cooperative TRPs from K' candidate cooperative TRPs, where K ⁇ K'.
  • the network device configures candidate collaboration TRPs for the terminal device, and the terminal device determines the number K of collaboration TRPs participating in collaboration from the candidate collaboration TRPs.
  • the terminal device receives fifth information from the network device, where the fifth information is used to indicate K′ reference signal resources or K′ antenna port groups.
  • the terminal device determines the number K of cooperative TRPs according to the number K' of candidate cooperative TRPs indicated by the fifth information.
  • the configuration information sent by the network device explicitly notifies the terminal device to cooperate with the TRP.
  • the number K The number K.
  • the above configuration information can be sent by the network device to the terminal device through signaling messages.
  • the signaling message may be at least one of the following signaling: RRC signaling, MAC-CE signaling, and DCI. It should be noted that the above configuration information can be carried in existing signaling messages of the 3GPP protocol or in newly defined signaling messages.
  • the first information is used to indicate the number of frequency domain components. It should be understood that the number of frequency domain components is the number of frequency domain components corresponding to one TRP. In this embodiment of the present application, each TRP in the TRP cooperation set corresponds to the same number of frequency domain components. The number of frequency domain components is the number of frequency domain components selected by the terminal device for one TRP. For example, a TRP cooperation set contains 3 TRPs and the number of frequency domain components is 2, which means that for each of the 3 TRPs, the number of frequency domain components selected by the terminal device is 2.
  • the first information is predefined by the protocol.
  • the first information is configured by the network device to the terminal device.
  • the network device determines the number of frequency domain components selected by the terminal device for a TRP and sends it to the terminal device through configuration information.
  • the first information is determined through negotiation between the network device and the terminal device.
  • the terminal device reports auxiliary information (such as capability information of the terminal device) to the network device, and the network device determines the first information based on the auxiliary information and sends it to the terminal device.
  • auxiliary information such as capability information of the terminal device
  • the first information is sent by the network device to the terminal device through a signaling message.
  • the signaling message may be at least one of the following signaling: RRC signaling, MAC-CE signaling, and DCI. It should be noted that the first information may be carried in an existing signaling message of the 3GPP protocol or in a newly defined signaling message.
  • the terminal device After the terminal device obtains the number of frequency domain components, it needs to select the frequency domain component corresponding to the number of frequency domain components among multiple candidate frequency domain components, and report the indication information of the selected frequency domain component to the network device. .
  • the terminal device directly selects a specific number of frequency domain components from multiple candidate frequency domain components, and the specific number is the same as the above number of frequency domain components. For example, if the terminal device needs to select 3 frequency domain components among 5 candidate frequency domain components, the terminal device selects 3 frequency domain components and sends the indication information of the 3 frequency domain components to the network device.
  • the protocol is preset or the network device configures the terminal device to select one or more specific frequency domain components by default.
  • the terminal device defaults to the initial frequency domain component and/or the initial frequency domain component among multiple candidate frequency domain components. Or terminate the frequency domain components.
  • the specific number of the above-mentioned specific number of frequency domain components selected by the terminal device is the above-mentioned number of frequency domain components minus the one or more specific frequency domain components. For example, if the terminal device needs to select 3 frequency domain components among 5 candidate frequency domain components, and the terminal device is configured to select the first frequency domain component (ie, the initial frequency domain component) of the 5 frequency domain components by default, then The terminal device needs to select two frequency domain components from the remaining four candidate frequency domain components and send the indication information of the two frequency domain components to the network device.
  • the first information may directly or indirectly indicate the number of frequency domain components.
  • the terminal device can directly obtain the number of frequency domain components from the first information, or determine the number of frequency domain components based on the first information.
  • the second information is used to indicate the number of candidate frequency domain components.
  • the number of candidate frequency domain components is the number of candidate frequency domain components corresponding to one TRP.
  • each TRP in the TRP cooperation set corresponds to the same number of candidate frequency domain components.
  • the candidate frequency domain component set corresponding to the number of candidate frequency domain components is the candidate set of frequency domain components selected by the terminal device for a TRP, that is, the terminal device selects the above number of frequency domain components from the candidate frequency domain component set. corresponding frequency domain components.
  • a TRP cooperation set contains 3 TRPs, the number of frequency domain components is 2, and the number of candidate frequency domain components is 8, which means that for each of these 3 TRPs, the terminal equipment selects from 8 candidate frequency components. Select 2 frequency domain components from the domain components.
  • the second information is predefined by the protocol.
  • the second information is configured by the network device to the terminal device.
  • the network The device determines the number of candidate frequency domain components of the terminal device for a TRP and sends it to the terminal device through configuration information.
  • the second information is determined through negotiation between the network device and the terminal device.
  • the terminal device reports auxiliary information (such as capability information of the terminal device) to the network device, and the network device determines the second information based on the auxiliary information and sends it to the terminal device.
  • auxiliary information such as capability information of the terminal device
  • the second information is sent by the network device to the terminal device through a signaling message.
  • the signaling message may be at least one of the following signaling: RRC signaling, MAC-CE signaling, and DCI. It should be noted that the second information can be carried in an existing signaling message of the 3GPP protocol or in a newly defined signaling message.
  • the protocol defines that in a single-site scenario, for NP codebooks and PS codebooks, the number of candidate frequency domain components is N3 and the number of frequency domain components is M1.
  • N3 ⁇ 19 the terminal equipment needs to select M1 frequency domain components from N3 candidate frequency domain components for reporting; when N3>19, the terminal equipment needs to select M1 frequency domain components from 2 ⁇ M1 candidate frequency domain components. Report the quantities.
  • the above value 19 is only an example. In actual applications, this value can also be other values, such as a value predefined by a protocol or configured by a network device.
  • the second information may directly or indirectly indicate the number of candidate frequency domain components.
  • the terminal device can directly obtain the number of candidate frequency domain components from the second information, or determine the number of candidate frequency domain components based on the second information.
  • the second information may directly indicate the number N of candidate frequency domain components.
  • the second information may indirectly indicate the number N3 of candidate frequency domain components. , that is to say, N3 is determined by the terminal device based on the second information.
  • the terminal device generates third information, where the third information is used to indicate the frequency domain component selected by the terminal device.
  • the third information occupies bits; Represents an upward rounding function; X is used to indicate the number of frequency domain component combinations, and X is an integer greater than or equal to 1.
  • the number of frequency domain component combinations is the number of frequency domain component combinations corresponding to the frequency domain components selected by the terminal device. It should be understood that the number of frequency domain component combinations is the number of frequency domain component combinations corresponding to one TRP in the TRP cooperation set. Assume that for a TRP, the number of candidate frequency domain components is Q, the number of frequency domain components is P, and the number of frequency domain component combinations is X, where Q is an integer greater than 1, P is a positive integer and 1 ⁇ P ⁇ Q. It should be understood that when there are frequency domain components selected by default, the number of frequency domain component combinations is the number of frequency domain component combinations corresponding to the frequency domain components selected by the terminal device in addition to the frequency domain components selected by default. The frequency domain component that the terminal device needs to report is also the frequency domain component selected in addition to the frequency domain component selected by default.
  • C represents the combination number formula.
  • the number of frequency domain component combinations determined by the terminal equipment is the number of combinations formed by randomly selecting P frequency domain components from Q candidate frequency domain components into one combination. It should be understood that can also be written as form, or the form of C(Q,P). In this way, the terminal device determines the number of combinations that it needs to indicate to the network device to select P frequency domain components from the Q candidate frequency domain components.
  • the number of frequency domain component combinations determined by the terminal equipment is the number of combinations formed by randomly selecting P-1 frequency domain components from Q-1 candidate frequency domain components into one combination.
  • the terminal device determines the number of combinations that it needs to indicate to the network device to select P-1 frequency domain components from Q-1 candidate frequency domain components. For example, when the starting frequency domain component or the last frequency domain component of the Q candidate frequency domain components is selected by default as the reported frequency domain component, the terminal device selects one of the Q-1 candidate frequency domain components except the default frequency domain component. P-1 frequency domain components outside.
  • r is a positive integer and 2 ⁇ r ⁇ P.
  • the number of frequency domain component combinations determined by the terminal equipment is the number of combinations formed by randomly selecting Pr frequency domain components from Qr candidate frequency domain components into one combination.
  • the terminal device determines the number of combinations that it needs to indicate to the network device to select Pr frequency domain components from the Qr candidate frequency domain components.
  • the protocol predefines that when r frequency domain components among Q candidate frequency domain components are frequency domain components reported by default, the terminal device selects Pr frequency domain components from Qr candidate frequency domain components.
  • the terminal device needs to indicate to the network device that the number of frequency domain components to be reported is Need to adopt represented by a number of bits.
  • the terminal device adopts the method of indicating the frequency domain components separately, and needs to indicate to the network device that the number of frequency domains reported by it is K times.
  • the terminal device needs to indicate to the network device that the number of frequency domain components to be reported is Need to adopt represented by a number of bits.
  • the terminal device adopts the method of indicating the frequency domain components separately, and needs to indicate to the network device that the number of frequency domains reported by it is K times.
  • the frequency domain component joint indication method of the embodiment of the present application take The number of bits occupied by the third information generated by the terminal device is
  • the terminal equipment needs to pass bits to indicate the reported frequency domain component.
  • the terminal equipment needs to pass bits to indicate the reported frequency domain component.
  • the candidate frequency domain components corresponding to TRP 1 are f 11 , f 12 , f 13 and f 14 respectively;
  • the candidate frequency domain components corresponding to TRP 2 are f 21 , f 22 , f 23 and f 24 respectively;
  • TRP The candidate frequency domain components corresponding to 3 are f 31 , f 32 , f 33 and f 34 respectively.
  • the terminal equipment since the terminal equipment reports the initial frequency domain transmission amount by default, the terminal equipment needs to select one frequency domain component from the remaining three candidate frequency domain components to report, that is, select among f 12 , f 13 and f 14 A frequency domain component, select a frequency domain component from f 22 , f 23 , and f 24 , and select a frequency domain component from f 32 , f 33 , and f 34 for reporting.
  • the end device needs bits to report its selected frequency domain components.
  • the terminal equipment uses 2 bits to indicate f 12 , A frequency domain component selected among f 13 and f 14 , using 2 bits to indicate a frequency domain component selected among f 22 , f 23 , and f 24 , using 2 bits to indicate a frequency domain component selected among f 32 , f 33 , and f 34
  • One frequency domain component therefore, the terminal device requires a total of 6 bits to indicate the selected frequency domain component.
  • the terminal equipment needs a frequency domain component selected among f 12 , f 13 and f 14 , a frequency domain component selected among f 22 , f 23 and f 24 , and a frequency domain component selected among f 32 , f 33 and f 34 , that is, for each TRP, the number of combinations of frequency domain components selected by the terminal equipment is Therefore, the total number of combinations of frequency domain components selected by the terminal device in the TRP set is Then the terminal device needs bits to indicate the selected frequency domain component.
  • the terminal device sends third information to the network device.
  • the network device receives the third information from the terminal device.
  • the third information is included in the PMI information, and the PMI information can be carried through UCI, where the UCI can be used by the terminal device to feed back the CSI of the downlink channel.
  • the third information is sent to the network device through other existing messages of the 3GPP protocol or newly defined messages as part of the information in the downlink channel CSI.
  • the network device determines the frequency domain component used for cooperative transmission according to the third information.
  • the network device determines the frequency domain component selected by the terminal device for each TRP in the TRP cooperation set according to the third information.
  • the frequency domain components of each TRP constitute the frequency domain components used by cooperative transmission.
  • the frequency domain components indicated by the third information are all frequency domain components selected by the terminal device.
  • the network device determines that the frequency domain component used for cooperative transmission is the frequency domain component indicated by the third information.
  • the candidate frequency domain components corresponding to TRP 1 are f 11 , f 12 , f 13 and f 14 respectively
  • the candidate frequency domain components corresponding to TRP 2 are f 21 , f respectively.
  • the candidate frequency domain components corresponding to TRP 3 are f 31 , f 32 , f 33 and f 34 respectively.
  • the terminal equipment selects 2 frequency domain components f 11 and f 14 for TRP 1 , 2 frequency domain components f 22 and f 23 for TRP 2 , and 2 frequency domain components f 33 and f 34 for TRP 3.
  • the frequency domain components used by the network device to determine cooperative transmission are: TRP 1 uses frequency domain components f 11 and f 14 to send downlink data, TRP 2 uses f 22 and f 23 to send downlink data, and TRP 3 uses frequency domain component f 33 and f 34 to send downlink data.
  • the protocol is preset or the network device configures the terminal device to select one or more specific frequency domain components by default.
  • the terminal device defaults to the initial frequency domain component and/or the initial frequency domain component among multiple candidate frequency domain components. Or terminate the frequency domain component.
  • the frequency domain component indicated by the third information may be a frequency domain component selected by the terminal device in addition to the initial frequency domain component and/or the termination frequency domain component selected by default by the terminal device. Therefore, the frequency domain component used for cooperative transmission determined by the network device may be the frequency domain component indicated by the third information, and the initial frequency domain component and/or the termination frequency domain component selected by the terminal device by default.
  • the candidate frequency domain components corresponding to TRP 1 are f 11 , f 12 , f 13 and f 14 respectively
  • the candidate frequency domain components corresponding to TRP 2 are f 21 , f respectively.
  • the candidate frequency domain components corresponding to TRP 3 are f 31 , f 32 , f 33 and f 34 respectively.
  • f 11 , f 21 , f 31 and f 41 are the frequency domain components selected by the terminal equipment by default
  • the terminal equipment selects one frequency domain component f 14 for TRP 1 and one frequency domain component f 23 for TRP 2 .
  • one frequency domain component f 34 is selected for TRP 3 .
  • the frequency domain components used by the network device to determine cooperative transmission are: TRP 1 uses frequency domain components f 11 and f 14 to send downlink data, TRP 2 uses f 21 and f 23 to send downlink data, and TRP 3 uses frequency domain components f 31 and f 14 to send downlink data.
  • f 34 sends downlink data.
  • the network device performs downlink precoding based on the determined frequency domain components. For example, for any TRP in the TRP cooperation set, the network device generates the precoding matrix of the TRP based on the determined frequency domain components and sends it to the TRP. The TRP uses the determined precoding matrix to precode the downlink data and then sends it to the terminal device.
  • the terminal device reports the selected frequency domain component using a joint indication method of frequency domain components, which effectively reduces the air interface overhead and enables the terminal device to more effectively report the frequency domain component in the TRP cooperation scenario.
  • the above embodiment describes a method for a terminal device to report frequency domain components in a multi-TRP collaboration scenario when the number of frequency domain components used by each TRP is the same.
  • each TRP can also use the same number of air domain components.
  • each TRP uses the same number of beams to send downlink data.
  • embodiments of the present application also provide a method for a terminal device to report airspace components. Similar to the aforementioned method for terminal equipment to report frequency domain components, the method for terminal equipment to report air domain components according to the embodiment of the present application also achieves the effect of saving air interface overhead.
  • Figure 7 shows a schematic flowchart of a method for reporting airspace components provided by an embodiment of the present application.
  • the method 700 is applied to the interaction between a network device and a terminal device.
  • the network device may be a TRP in the TRP cooperation set of the terminal device, or it may be a device outside the TRP cooperation set that has the ability to control each TRP in the TRP cooperation set.
  • This application does not make any reference to this. limited.
  • This network device can communicate with any TRP in the TRP cooperation set.
  • the process shown in Figure 7 includes the following steps:
  • the terminal device obtains the TRP number, sixth information, and seventh information.
  • the number of TRPs is used to indicate the number of cooperative TRPs.
  • the sixth information is used to indicate the number of spatial components.
  • the number of airspace components is the number of airspace components corresponding to one TRP.
  • each TRP in the TRP cooperation set corresponds to the same number of airspace components.
  • the number of airspace components is the number of airspace components selected by the terminal device for a TRP.
  • a TRP cooperation set contains 3 TRPs and the number of airspace components is 2, which means that for each of the 3 TRPs, the number of airspace components selected by the terminal device is 2.
  • the terminal device After the terminal device obtains the number of airspace components, it needs to select the airspace component corresponding to the number of airspace components among multiple candidate airspace components, and report the indication information of the selected airspace component to the network device.
  • the seventh information is used to indicate the number of candidate spatial components.
  • the number of candidate airspace components is the number of candidate airspace components corresponding to one TRP.
  • each TRP in the TRP cooperation set corresponds to the same number of candidate airspace components.
  • the set of candidate airspace components corresponding to the number of candidate airspace components is the candidate set of airspace components selected by the terminal device for a TRP, that is, the terminal device selects the airspace component corresponding to the number of airspace components from the set of candidate airspace components.
  • a TRP cooperation set contains 3 TRPs, the number of airspace components is 2, and the number of candidate airspace components is 8, which means that for each of these 3 TRPs, the terminal equipment selects from 8 candidate airspace components. Select 2 airspace components.
  • the seventh information indicates the number of reference signal ports, such as the number of CSI-RS ports.
  • the way in which the terminal device obtains the number of TRPs is similar to the way in which the number of TRPs is obtained described in the foregoing embodiment S601, and the way in which the terminal device obtains the sixth information is similar to the way in which the first information is obtained in the foregoing embodiment S601.
  • the way in which the terminal device obtains the seventh information is similar to the way in which the second information is obtained described in the foregoing embodiment S601, and will not be described again here.
  • the terminal device generates eighth information, where the eighth information is used to indicate the airspace component selected by the terminal device.
  • the eighth information occupies bits; Represents an upward rounding function; Y is used to indicate the number of spatial component combinations, and Y is an integer greater than or equal to 1.
  • the number of airspace component combinations is the number of airspace component combinations corresponding to the airspace component selected by the terminal device. It should be understood that the number of airspace component combinations is the number of airspace component combinations corresponding to one TRP in the TRP cooperation set. Assume that for a TRP, the number of candidate airspace components is T, the number of airspace components is S, and the number of airspace component combinations is Y, where T is an integer greater than 1, S is a positive integer and 1 ⁇ S ⁇ T. It should be understood that when there are airspace components selected by default, the number of airspace component combinations is the number of airspace component combinations corresponding to airspace components selected by the terminal device in addition to the airspace components selected by default. The airspace component that the terminal device needs to report is also the airspace component selected in addition to the default selected airspace component.
  • the number of airspace component combinations determined by the terminal equipment is the number of combinations formed by randomly selecting S airspace components from T candidate airspace components into one combination.
  • the terminal device determines the number of combinations of S airspace components selected from T candidate airspace components that it needs to indicate to the network device.
  • the terminal device sends the eighth information to the network device.
  • the network device receives the eighth information from the terminal device.
  • the eighth information is included in the PMI information, and the PMI information can be carried through UCI, where the UCI can be used by the terminal device to feed back the CSI of the downlink channel.
  • the eighth information is sent to the network device through other existing messages of the 3GPP protocol or newly defined messages as part of the information in the downlink channel CSI.
  • the network device determines the airspace component used for cooperative transmission according to the eighth information.
  • the network device determines the airspace component selected by the terminal device for each TRP in the TRP cooperation set according to the eighth information.
  • the airspace components of each TRP constitute the airspace volume used for cooperative transmission.
  • the network device performs downlink precoding based on the determined airspace component. For example, for any TRP in the TRP cooperation set, the network device generates the precoding matrix of the TRP based on the determined airspace component and sends it to the TRP. The TRP uses the determined precoding matrix to precode the downlink data and then sends it to the terminal device.
  • the terminal device uses the joint indication of airspace components to report the selected airspace component, which effectively reduces the air interface overhead and enables the terminal device to more effectively report the airspace component in the TRP cooperation scenario.
  • the above method for terminal equipment to report frequency domain components and the method for terminal equipment to report air domain components can be implemented independently of each other, that is, the terminal equipment only reports frequency domain components, or the terminal equipment only reports air domain components; they can also be implemented jointly, that is, The terminal equipment reports both frequency domain components and air domain components.
  • the above-mentioned first information and sixth information may be carried in different signaling messages respectively, or may be carried in the same signaling message; the above-mentioned second information and seventh information may be carried in different signaling messages respectively.
  • the signaling message may also be carried in the same signaling message; the third information and the eighth information may be carried in different signaling messages respectively, or may be carried in the same signaling message.
  • each network element such as network equipment and terminal equipment, includes a corresponding hardware structure or software module for performing each function, or a combination of both.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving the hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.
  • Embodiments of the present application can divide network equipment and terminal equipment into functional modules according to the above method examples.
  • each functional module/unit can be divided corresponding to each function, or two or more functions can be integrated into one in the processing module/unit.
  • the above integrated modules/units can be implemented in the form of hardware or software function modules. It should be noted that the division of modules/units in the embodiments of this application is schematic and is only a Logical function division can be divided in other ways during actual implementation. The following is an example of dividing each functional module/unit corresponding to each function:
  • FIG 8 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device 800 may correspond to the terminal device in the above method embodiment.
  • it may be a terminal device, or a component (such as a circuit, a chip or a chip system, etc.) configured in the terminal device.
  • the terminal device 800 may include a Modules/units for executing the method executed by the terminal device in the method 600 in Figure 6, and/or modules/units for executing the method executed by the terminal device in the method 700 in Figure 7.
  • each module/unit in the terminal device 800 is respectively intended to implement the corresponding process of the method 600 in Figure 6 and/or to implement the corresponding process of the method 700 in Figure 7 .
  • the terminal device 800 includes a communication unit 801 and a processing unit 802 .
  • the communication unit 801 is used to support the terminal device to perform S603 in Figure 6, and/or S703 in Figure 7, and/or to support other processes of the technical solution described herein.
  • the processing unit 802 is used to support the terminal device to perform S602 in Figure 6, and/or S702 in Figure 7, and/or other processes to support the technical solutions described herein.
  • S601 in FIG. 6 and/or S701 in FIG. 7 may be supported by the communication unit 801 and/or the processing unit 802. It should be understood that the specific process of each unit performing the above corresponding steps has been described in detail in the above method embodiments, and will not be described again for the sake of brevity.
  • the communication unit 801 in the terminal device 800 may be implemented by a transceiver, for example, may correspond to the transceiver 103 in the terminal device 100 shown in FIG. 2
  • the processing unit 702 in the terminal device 700 may be implemented by at least One processor implementation may, for example, correspond to the processor 101 in the terminal device 100 shown in FIG. 2 .
  • the terminal device is a chip or chip system configured in the terminal device
  • the communication unit 801 in the terminal device can be implemented through an input/output interface, a circuit, etc.
  • the processing unit 802 in the terminal device can be implemented through the Implementation of a processor, microprocessor or integrated circuit integrated on a chip or chip system.
  • FIG 9 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • the network device 900 may correspond to the network device in the above method embodiment.
  • it may be a network device or a component (such as a circuit, a chip or a chip system, etc.) configured in the network device.
  • the network device 900 may include a Modules/units for performing the method performed by the network device in the method 600 in Figure 6, and/or modules/units for performing the method performed by the network device in the method 700 in Figure 7.
  • each module/unit in the network device 900 is respectively intended to implement the corresponding process of the method 600 in Figure 6 and/or to implement the corresponding process of the method 700 in Figure 7 .
  • the network device 900 includes a communication unit 901 and a processing unit 902.
  • the communication unit 901 is used to support the network device to perform S603 in Figure 6, and/or S703 in Figure 7, and/or other processes to support the technical solution described herein.
  • the processing unit 902 is used to support the network device to perform S604 in Figure 6, and/or S704 in Figure 7, and/or other processes to support the technical solution described herein.
  • S601 in FIG. 6 and/or S701 in FIG. 7 is supported by the communication unit 901. It should be understood that the specific process of each unit performing the above corresponding steps has been described in detail in the above method embodiments, and will not be described again for the sake of brevity.
  • the communication unit 901 in the network device 900 may be implemented by a transceiver, for example, may correspond to the transceiver 203 in the network device 200 shown in FIG. 2
  • the processing unit 902 in the network device 900 may be implemented by at least One processor implementation may, for example, correspond to the processor 201 in the network device 200 shown in FIG. 2 .
  • the communication unit 901 in the network device can be implemented through an input/output interface, a circuit, etc.
  • the processing unit 902 in the network device can be implemented through the Implementation of a processor, microprocessor or integrated circuit integrated on a chip or chip system.
  • An embodiment of the present application also provides a processing device, including a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the communication interface is used to input and/or output information.
  • the information includes at least one of instructions and data.
  • the processor is used to execute a computer program, so that the processing device executes the terminal device or network in the above method embodiment. The method performed by the network device.
  • An embodiment of the present application also provides a processing device, including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program from the memory, so that the processing device executes the method executed by the terminal device or network device in the above method embodiment.
  • each step of the above method can be completed by instructions in the form of hardware integrated logic circuits or software in the processor.
  • the steps of the methods disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware processor for execution, or can be executed by a combination of hardware and software modules in the processor.
  • the software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • Figure 10 is a schematic structural diagram of a chip provided by an embodiment of the present application.
  • the chip shown in Figure 10 can be a general-purpose processor or a special-purpose processor.
  • the chip includes processor 1001. Among them, the processor 1001 is used to support the terminal device and the network device to execute the technical solutions shown in Figures 6 and 7.
  • the chip also includes a transceiver pin 1002.
  • the transceiver pin 1002 is used to accept the control of the processor 1001 and is used to support the communication device in executing the technical solutions shown in Figures 6 and 7.
  • the chip shown in Figure 10 may also include: a storage medium 1003.
  • the chip shown in Figure 10 can be implemented using the following circuits or devices: one or more FPGAs, programmable logic devices (PLD), system on chip (SoC) chips, A controller, a state machine, a logic circuit, a discrete hardware component, any other suitable circuit, or any combination of circuits capable of performing the various functions described throughout this application.
  • FPGAs programmable logic devices
  • SoC system on chip
  • the terminal equipment, network equipment, computer storage media, computer program products, and chips provided by the above embodiments of the present application are all used to execute the method provided above. Therefore, the beneficial effects they can achieve can refer to the method provided above. The corresponding beneficial effects will not be described again here.
  • Embodiments of the present application also provide a computer-readable storage medium.
  • Computer instructions are stored in the computer-readable storage medium; when the computer-readable storage medium is run on a communication device, the communication device is caused to execute as shown in Figure 4 method shown.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means.
  • wired such as coaxial cable, optical fiber, digital subscriber line (DSL)
  • wireless such as infrared, wireless, microwave, etc.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or include one or more data storage devices such as servers and data centers that can be integrated with the medium.
  • the available media may be magnetic media (such as floppy disks, hard disks, magnetic tapes), optical media, or semiconductor media (such as solid state disks (SSD)), etc.
  • Embodiments of the present application also provide a computer program product.
  • the computer program product includes: computer program code.
  • the computer program code When the computer program code is run on a computer, it causes the computer to execute the steps executed by the terminal device in the embodiment shown in Figure 4. Method or method executed by a network device.
  • An embodiment of the present application also provides a system, which includes the aforementioned one or more terminal devices and one or more network devices.
  • the network equipment in each of the above apparatus embodiments corresponds completely to the network equipment or terminal equipment in the terminal equipment and method embodiments, and the corresponding modules/units perform corresponding steps.
  • the communication unit (transceiver) performs receiving or receiving in the method embodiments.
  • the sending step, other steps except sending and receiving, may be executed by the processing unit (processor).
  • the work of a specific unit Please refer to the corresponding method embodiment.
  • a component may be, but is not limited to, a process, a processor, an object, an executable file, a thread of execution, a program and/or a computer running on a processor.
  • applications running on the computing device and the computing device may be components.
  • One or more components can reside in a process and/or thread of execution and a component can be localized on one computer and/or distributed between 2 or more computers. Additionally, these components can execute from various computer-readable media having various data structures stored thereon.
  • a component may, for example, be based on a signal having one or more data packets (eg, data from two components interacting with another component, a local system, a distributed system, and/or a network, such as the Internet, which interacts with other systems via signals) Communicate through local and/or remote processes.
  • data packets eg, data from two components interacting with another component, a local system, a distributed system, and/or a network, such as the Internet, which interacts with other systems via signals
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application.
  • the aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Les modes de réalisation de la présente demande concernent un procédé de rapport de composante de domaine fréquentiel, et un appareil, qui sont utilisés pour réduire le surdébit de rétroaction d'interface radio. Le procédé comprend les étapes suivantes : un dispositif terminal acquiert le nombre de points de transmission et de réception (TRP), des premières informations et des deuxièmes informations, le nombre de TRP étant utilisé pour indiquer le nombre de TRP coopératifs, les premières informations étant utilisées pour indiquer le nombre de composantes de domaine fréquentiel, et les deuxièmes informations étant utilisées pour indiquer le nombre de composantes de domaine fréquentiel candidates ; le dispositif terminal génère des troisièmes informations utilisées pour indiquer des composantes de domaine fréquentiel sélectionnées par le dispositif terminal, les troisièmes informations occupant [log2(XK)] bits, X étant utilisé pour indiquer le nombre de combinaisons de composantes de domaine fréquentiel, et le nombre de combinaisons de composantes de domaine fréquentiel étant obtenu selon les premières informations et les deuxièmes informations, et K étant utilisé pour indiquer le nombre de TRP ; et le dispositif terminal envoie les troisièmes informations à un dispositif de réseau.
PCT/CN2023/104558 2022-08-12 2023-06-30 Procédé de rapport de composante de domaine fréquentiel, et appareil Ceased WO2024032241A1 (fr)

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CN202210970004.7 2022-08-12

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WO2025195149A1 (fr) * 2024-03-21 2025-09-25 华为技术有限公司 Procédé de communication et appareil de communication

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CN111095839A (zh) * 2017-09-12 2020-05-01 联发科技股份有限公司 无线通信中多trp与多面板传输的方法及装置
CN112073129A (zh) * 2019-06-10 2020-12-11 成都华为技术有限公司 确定天线面板状态的方法和装置
CN114616891A (zh) * 2019-11-08 2022-06-10 高通股份有限公司 针对多个分量载波的传输配置指示符状态更新

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CN111095839A (zh) * 2017-09-12 2020-05-01 联发科技股份有限公司 无线通信中多trp与多面板传输的方法及装置
CN112073129A (zh) * 2019-06-10 2020-12-11 成都华为技术有限公司 确定天线面板状态的方法和装置
CN114616891A (zh) * 2019-11-08 2022-06-10 高通股份有限公司 针对多个分量载波的传输配置指示符状态更新

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Publication number Priority date Publication date Assignee Title
WO2025195149A1 (fr) * 2024-03-21 2025-09-25 华为技术有限公司 Procédé de communication et appareil de communication

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