WO2023206174A1 - 基于码本的预编码确定方法、装置、设备及存储介质 - Google Patents

基于码本的预编码确定方法、装置、设备及存储介质 Download PDF

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Publication number
WO2023206174A1
WO2023206174A1 PCT/CN2022/089672 CN2022089672W WO2023206174A1 WO 2023206174 A1 WO2023206174 A1 WO 2023206174A1 CN 2022089672 W CN2022089672 W CN 2022089672W WO 2023206174 A1 WO2023206174 A1 WO 2023206174A1
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Prior art keywords
csi
indication information
resource
information
port
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PCT/CN2022/089672
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English (en)
French (fr)
Inventor
李明菊
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北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN202280001433.1A priority Critical patent/CN117480836A/zh
Priority to PCT/CN2022/089672 priority patent/WO2023206174A1/zh
Publication of WO2023206174A1 publication Critical patent/WO2023206174A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of mobile communications, and in particular to a codebook-based precoding determination method, device, equipment and storage medium.
  • network equipment and terminals can communicate, and the terminal can feed back CSI (Channel Status Information) to the network equipment, and then the network equipment determines the terminal based on the received CSI and the corresponding codebook structure.
  • CSI Channel Status Information
  • the network equipment determines the terminal based on the received CSI and the corresponding codebook structure.
  • the embodiments of this application provide a codebook-based precoding determination method, device, equipment and storage medium.
  • This application jointly utilizes multiple TRP channel information and proposes a channel status information reporting method, which not only reduces feedback overhead , also improves the determined terminal precoding accuracy.
  • the technical solutions are as follows:
  • a codebook-based precoding determination method is provided, the method is executed by a terminal, and the method includes:
  • CSI-RS Channel Status Information-Reference Signal, Channel Status Information Reference Signal
  • channel state information is sent to the network device.
  • the channel state information includes indication information corresponding to multiple CSI-RS resources and each CSI-RS resource.
  • Instruction information corresponding to the RS resource, or the channel state information includes indication information corresponding to multiple port groups in a CSI-RS resource and indication information corresponding to each port group, and the port group includes the CSI-RS resource.
  • the channel state information is used to determine the precoding of the terminal based on the codebook structure corresponding to the codebook parameter information.
  • a codebook-based precoding determination method is provided, the method is executed by a network device, and the method includes:
  • Receive channel state information sent by the terminal where the channel state information includes indication information corresponding to multiple CSI-RS resources and indication information corresponding to each CSI-RS resource, or the channel state information includes one CSI-RS resource.
  • the port group includes multiple CSI-RS ports corresponding to the CSI-RS resources.
  • the channel state information is generated by the terminal based on at least one The channel information and codebook parameter information corresponding to each CSI-RS resource in the CSI-RS resource are determined;
  • the precoding of the terminal is determined according to the codebook structure corresponding to the channel state information and the codebook parameter information.
  • a codebook-based precoding determination device includes:
  • a determining module configured to determine channel information corresponding to each CSI-RS resource based on at least one CSI-RS resource
  • a sending module configured to send channel state information to the network device according to the determined channel information corresponding to each CSI-RS resource and codebook parameter information, where the channel state information includes indication information corresponding to multiple CSI-RS resources. and indication information corresponding to each CSI-RS resource, or the channel state information includes indication information corresponding to multiple port groups in one CSI-RS resource and indication information corresponding to each port group, and the port group includes all Multiple CSI-RS ports corresponding to the above CSI-RS resources;
  • the channel state information is used to determine the precoding of the terminal based on the codebook structure corresponding to the codebook parameter information.
  • a codebook-based precoding determination device includes:
  • a receiving module configured to receive channel state information sent by the terminal, where the channel state information includes indication information corresponding to multiple CSI-RS resources and indication information corresponding to each CSI-RS resource, or the channel state information includes a Instruction information corresponding to multiple port groups in the CSI-RS resource and indication information corresponding to each port group.
  • the port group includes multiple CSI-RS ports corresponding to the CSI-RS resource.
  • the channel status information is determined by the The terminal determines based on the channel information corresponding to each CSI-RS resource in at least one CSI-RS resource and the codebook parameter information;
  • a determining module configured to determine the precoding of the terminal according to the channel state information and the codebook structure corresponding to the codebook parameter information.
  • a terminal includes: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions.
  • the instructions are executed to implement the codebook-based precoding determination method in the above aspect.
  • a network device includes: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and The executable instructions are executed to implement the codebook-based precoding determination method as described above.
  • a computer-readable storage medium stores executable program code.
  • the executable program code is loaded and executed by a processor to implement the codebook-based prediction as described above. Coding determination method.
  • a chip is provided.
  • the chip includes programmable logic circuits and/or program instructions. When the chip is run on a terminal, it is used to implement the codebook-based precoding determination method as described above.
  • a computer program product is provided.
  • the computer program product is executed by a processor of a terminal, it is used to implement the codebook-based precoding determination method of the above aspect.
  • the indication information reported to the network device is used to indicate the code corresponding to multiple CSI-RS resources.
  • This parameter information and the codebook parameter information corresponding to each CSI-RS resource, or indicating the codebook parameter information corresponding to multiple port groups in one CSI-RS resource and the codebook parameter information corresponding to each port group, and multiple A CSI-RS resource or multiple port groups can be understood as corresponding to multiple TRPs. That is to say, this application determines the parameters shared by multiple TRPs and the independent parameters of each TRP. Therefore, the network device can determine the terminal's parameters based on the parameters reported by the terminal. For precoding, this application jointly utilizes multiple TRP channel information and proposes a channel state information reporting method, which not only reduces feedback overhead, but also improves the determined terminal precoding accuracy.
  • Figure 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present application
  • Figure 2 shows a block diagram of another communication system provided by an exemplary embodiment of the present application
  • Figure 3 shows a flow chart of a codebook-based precoding determination method provided by an exemplary embodiment of the present application
  • Figure 4 shows a flow chart of a codebook-based precoding determination method provided by an exemplary embodiment of the present application
  • Figure 5 shows a flow chart of a codebook-based precoding determination method provided by an exemplary embodiment of the present application
  • Figure 6 shows a flow chart of a codebook-based precoding determination method provided by an exemplary embodiment of the present application
  • Figure 7 shows a flow chart of a codebook-based precoding determination method provided by an exemplary embodiment of the present application
  • Figure 8 shows a block diagram of a codebook-based precoding determination device provided by an exemplary embodiment of the present application
  • Figure 9 shows a block diagram of another codebook-based precoding determination device provided by an exemplary embodiment of the present application.
  • Figure 10 shows a block diagram of a codebook-based precoding determination device provided by an exemplary embodiment of the present application
  • Figure 11 shows a block diagram of another codebook-based precoding determination device provided by an exemplary embodiment of the present application.
  • Figure 12 shows a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.
  • first, second, third, etc. may be used in this application to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other.
  • first information may also be called second information, and similarly, the second information may also be called first information.
  • word “if” as used herein may be interpreted as "when” or “when” or “in response to determining.”
  • the information including but not limited to user equipment information, user personal information, etc.
  • data including but not limited to data used for analysis, stored data, displayed data, etc.
  • signals involved in this application All are authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.
  • Figure 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present application.
  • the communication system may include: a terminal 10 and a network device 20.
  • the number of terminals 10 is usually multiple, and one or more terminals 10 can be distributed in the cell managed by each network device 20 .
  • the terminal 10 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems with wireless communication functions, as well as various forms of user equipment (User Equipment, UE), mobile stations ( Mobile Station, MS) and so on.
  • UE User Equipment
  • MS Mobile Station
  • the network device 20 is a device deployed in the access network to provide wireless communication functions for the terminal 10 .
  • the above-mentioned devices that provide wireless communication functions for the terminal 10 are collectively referred to as network equipment.
  • a connection can be established between the network device 20 and the terminal 10 through an air interface, so that communication, including signaling and data interaction, can be performed through the connection.
  • the number of network devices 20 may be multiple, and communication between two adjacent network devices 20 may also be carried out in a wired or wireless manner.
  • the terminal 10 can switch between different network devices 20 , that is, establish connections with different network devices 20 .
  • the network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, transmission and reception points (Transmission Reception Point, TRP), and so on.
  • TRP Transmission Reception Point
  • the names of devices with network device functions may be different.
  • 5G NR New Radio, new wireless technology
  • they are called gNodeB or gNB.
  • the name "network device" may change.
  • a network device may include one or more TRPs, or a network device may include one or more antenna panels.
  • the network device may communicate with the terminal through each of the multiple TRPs. That is to say, the network device establishes a transmission channel with each TRP in multiple TRPs, and then communicates with the terminal based on the established transmission channel.
  • the network device can communicate with the terminal through each of the multiple antenna panels. That is to say, the network device establishes a transmission channel with each of the multiple antenna panels, and then communicates with the terminal based on the established transmission channel.
  • a network device is configured with 4 TRPs, namely TRP1, TRP2, TRP3 and TRP4.
  • the network device establishes communication connections with the terminal through these 4 TRPs, and then the network device can communicate with the terminal through 4 TRPs. communicate.
  • multiple TRPs included in a network device can cooperate using CJT technology to complete data transmission between the network device and the terminal.
  • the CJT technology means that each data stream will be mapped to the TRP participating in the collaboration through a weighted vector.
  • Figure 3 shows a flow chart of a codebook-based precoding determination method provided by an exemplary embodiment of the present application.
  • the exemplary method can be applied to the terminal and network equipment shown in Figure 1.
  • the method includes the following content At least part of:
  • Step 301 The terminal determines the channel information corresponding to each CSI-RS resource based on at least one CSI-RS resource.
  • CSI-RS resources are used to transmit CSI-RS.
  • the CSI-RS resource is configured by the network device, and the network device can send the CSI-RS to the terminal through the configured CSI-RS resource.
  • the terminal measures CSI-RS based on at least one CSI-RS resource to obtain channel information corresponding to each measured CSI-RS resource.
  • the CSI-RS resources are CMR (Channel Measurement Resource) resources. That is to say, the CSI-RS resources in the embodiments of this application are CMR resources.
  • different CMR resources belong to the same CSI-RS resource set, or different CMR resources belong to different CSI-RS resource sets.
  • each CSI-RS resource in at least one CSI-RS resource corresponds to a TRP, and at least two TRPs are used for CJT (Coherent Joint Transmission, coherent transmission).
  • CJT Coherent Joint Transmission, coherent transmission
  • each port group in multiple port groups in a CSI-RS resource corresponds to a TRP, and at least two TRPs are used for CJT.
  • one CSI-RS resource corresponds to multiple CSI-RS ports
  • multiple CSI-RS ports are grouped to obtain multiple port groups
  • each port group includes at least one CSI-RS port
  • each port group Corresponds to a TRP.
  • Step 302 The terminal sends channel state information to the network device according to the determined channel information corresponding to each CSI-RS resource and the codebook parameter information.
  • the channel state information includes indication information corresponding to multiple CSI-RS resources and each CSI-RS resource.
  • the indication information corresponding to the RS resource, or the channel state information includes indication information corresponding to multiple port groups in a CSI-RS resource and indication information corresponding to each port group.
  • the port group includes multiple CSI-RS resources corresponding to the CSI-RS resource.
  • RS port channel state information is used to determine the precoding of the terminal based on the codebook structure corresponding to the codebook parameter information.
  • the codebook parameter information is used for the terminal to report indication information so that the network device can determine the precoding of the terminal.
  • the codebook parameter information corresponds to the codebook structure, which means that the precoding of the terminal can be determined based on the codebook parameter information corresponding to the codebook structure and the channel state information.
  • the channel state information in the embodiment of the present application is used to determine the precoding of the terminal based on the codebook structure corresponding to the codebook parameter information, and the channel state information includes indication information. That is to say, the indication information included in the channel state information is used to determine the precoding based on the codebook parameter information.
  • the codebook structure corresponding to the codebook parameter information determines the precoding of the terminal.
  • the channel state information includes indication information corresponding to multiple CSI-RS resources and indication information corresponding to each CSI-RS resource.
  • the indication information corresponding to multiple CSI-RS resources means that the indication information included in the channel state information for determining the precoding of the terminal can be applied to each CSI-RS resource, that is, sending one indication information can be applied to each CSI-RS resources.
  • the indication information corresponding to each CSI-RS resource refers to: the precoding parameters for the terminal included in the channel state information are applied to one CSI-RS resource, that is, the indication information corresponding to each CSI-RS resource is applicable to the corresponding CSI-RS resources, other CSI-RS resources are not applicable.
  • the channel state information includes indication information corresponding to multiple port groups in a CSI-RS resource and indication information corresponding to each port group.
  • the port group includes multiple CSI-RS ports corresponding to the CSI-RS resource.
  • the indication information corresponding to multiple port groups means: the indication information included in the channel state information for determining the precoding of the terminal can be applied to each port group, that is, sending one indication information can be applied to each port group.
  • the indication information corresponding to each port group refers to: the precoding indication information for the terminal included in the channel status information applies to a port group, that is, the parameters corresponding to each port group apply to the corresponding port group, and other ports Groups are not applicable.
  • the terminal after the terminal determines the channel information corresponding to each CSI-RS resource in at least one CSI-RS resource, it determines the indication information that the terminal needs to report to the network device based on the acquired channel information and codebook parameter information. , the terminal then sends channel state information including indication information to the network device, and the channel state information is used to determine the precoding parameters of the terminal.
  • the terminal determines the channel information corresponding to each CSI-RS resource. And if at least one CSI-RS resource includes one CSI-RS resource, and the CSI-RS resource corresponds to multiple CSI-RS ports, the terminal determines the channel information corresponding to each port group in the multiple port groups.
  • the network device configures codebook parameter information for the terminal through RRC (Radio Resource Control, Radio Resource Control) signaling, or the network device configures codebook parameter information for the terminal through other signaling.
  • RRC Radio Resource Control, Radio Resource Control
  • Step 303 The network device receives the channel state information sent by the terminal.
  • the channel state information includes indication information corresponding to multiple CSI-RS resources and indication information corresponding to each CSI-RS resource.
  • the channel state information includes one CSI-RS resource.
  • the port group includes multiple CSI-RS ports corresponding to CSI-RS resources.
  • the channel state information is generated by the terminal based on each of at least one CSI-RS resource.
  • the channel information and codebook parameter information corresponding to the CSI-RS resources are determined.
  • Step 304 The network device determines the precoding of the terminal based on the channel state information and the codebook structure corresponding to the codebook parameter information.
  • the codebook parameter information corresponds to a codebook structure. If the structure of the codebook is different, the network device determines the precoding of the terminal based on the codebook structure in different ways.
  • the network device after the network device receives the channel state information, it can determine the indication information corresponding to multiple CSI-RS resources included in the channel state information and the indication information corresponding to each CSI-RS resource based on the channel state information. , or, the indication information corresponding to multiple port groups in a CSI-RS resource indicated by the channel state information and the indication information corresponding to each port group, and then based on the codebook structure corresponding to the determined channel state information and codebook parameter information, Determine the precoding of the terminal.
  • steps performed by the network device may form an embodiment alone, and the steps performed by the terminal may also form an embodiment alone, which is not limited in this application.
  • the channel status information reported to the network device includes indication information corresponding to multiple CSI-RS resources and each CSI-RS resource.
  • Corresponding indication information, or indication information corresponding to multiple port groups in one CSI-RS resource and indication information corresponding to each port group, and multiple CSI-RS resources or multiple port groups can be understood as corresponding to multiple TRP, that is, this application determines the parameters shared by multiple TRPs and the individual parameters of each TRP. Therefore, the network device can determine the precoding of the terminal based on the parameters reported by the terminal.
  • This application jointly utilizes multiple TRP channel information and proposes A channel CSI reporting method not only reduces feedback overhead, but also improves determined terminal precoding accuracy.
  • the channel state information sent by the terminal includes a variety of information, and the multiple information included includes different situations.
  • Channel status information includes at least one of the following information:
  • N air domain basis vector indication information or N port selection indication information is the same as the number of CSI-RS resources, and N is a positive integer greater than 1.
  • the spatial domain basis vector indication information is represented by SD basis (Spatial Domain basis, spatial domain basis vector).
  • the spatial domain basis vector indication information is used to indicate the Li spatial domain basis vectors selected by the terminal.
  • i belongs to ⁇ 1,2...,N ⁇ .
  • the spatial domain basis vector indication information is a spatial domain beam basis vector, which may be called a beam basis vector, a spatial domain basis vector, or a beam.
  • the port selection indication information is used to indicate Li CSI-RS ports selected by the terminal.
  • the channel state information sent by the terminal to the network device includes N air domain base vector indication information or N port selection indication information.
  • These N air domain base vector indication information or N port selection indication information are actually related to the CSI-RS resources.
  • it can also be understood as a one-to-one correspondence between the air domain basis vector indication information or the port selection indication information and the CSI-RS resources.
  • each CSI-RS resource corresponds to a TRP, that is, these N CSI-RS resources correspond to N TRPs, and the terminal reports the air domain base vector indication information or port selection indication information corresponding to each TRP.
  • the spatial domain basis vector indication information is used for explanation.
  • the spatial basis vector indicated by the spatial basis vector indication information is W 1,i , which or W 1,i represents a matrix composed of Li spatial domain basis vectors corresponding to the i -th CSI-RS resource, N represents the number of CSI-RS resources, N t represents the number of transmitting antenna ports, and Li represents the i ⁇ The number of air domain basis vectors or CSI-RS ports corresponding to 1,...,N ⁇ CSI-RS resources, and P is the number of CSI-RS ports.
  • the embodiment of the present application takes as an example the correspondence between N pieces of air domain base vector indication information or N pieces of port selection indication information and CSI-RS resources.
  • the N air domain basis vector indication information or N port selection indication information may also correspond to multiple port groups of one CSI-RS resource.
  • the channel state information includes N air domain basis vector indication information or N port selection indication information, and N is the same as the number of port groups, and N is a positive integer greater than 1.
  • the channel state information sent by the terminal to the network device includes N air domain base vector indication information or N port selection indication information. These N air domain base vector indication information or N port selection indication information actually correspond to the number of port groups. , it can also be understood that the air domain basis vector indication information or port selection indication information corresponds to the port group one-to-one.
  • each port group corresponds to a TRP, that is, these N port groups correspond to N TRPs, and the terminal reports the airspace base vector indication information or port selection indication information corresponding to each TRP.
  • the spatial basis vector indication information is used for explanation.
  • the spatial basis vector indicated by the spatial basis vector indication information is W 1,i , and the spatial basis vector is W 1,i .
  • W 1,i represents a matrix composed of Li air domain basis vectors corresponding to the i - th port group, N represents the number of at least two port groups, N t represents the number of transmitting antenna ports, and Li represents the i ⁇ 1 ,...,N ⁇ port groups correspond to the number of air domain basis vectors or CSI-RS ports, and P is the number of CSI-RS ports.
  • the channel state information sent by the terminal to the network device includes a combination coefficient indication information.
  • This combination coefficient indication information is actually shared by multiple CSI-RS resources and can also be understood as a combination coefficient indication information.
  • each CSI-RS resource corresponds to a TRP, that is, these N CSI-RS resources correspond to N TRPs, and the terminal reports a combination coefficient indication information shared by multiple TRPs.
  • the combination coefficient matrix indicated by the combination coefficient indication information is N represents the number of CSI-RS resources
  • Li represents the air domain basis vector indication information or the number of CSI-RS ports corresponding to the i ⁇ 1,...,N ⁇ th CSI-RS resource
  • M represents the CSI-RS resources. The number of corresponding frequency domain basis vectors.
  • one combination coefficient indication information may also correspond to multiple port groups of one CSI-RS resource.
  • the channel state information includes a combination coefficient indication information, and the combination coefficient indication information corresponds to multiple port groups.
  • the channel state information sent by the terminal to the network device includes a combination coefficient indication information.
  • This combination coefficient indication information is actually shared by multiple port groups. It can also be understood that one combination coefficient indication information corresponds to multiple port groups. port group.
  • each port group corresponds to a TRP, that is, these N port groups correspond to N TRPs, and the terminal reports a combination coefficient indication information shared by multiple TRPs.
  • the combination coefficient matrix indicated by the combination coefficient indication information is N represents the number of port groups, L i represents the number of air domain basis vectors or CSI-RS ports corresponding to the i ⁇ ⁇ 1,...,N ⁇ th port group, and M represents the number of frequency domain basis vectors corresponding to the port group. number.
  • the frequency domain basis vector indication information is used to indicate the M frequency domain basis vectors selected by the terminal.
  • the frequency domain basis vector indication information is used to characterize the changing pattern of the channel in the frequency domain.
  • the frequency domain basis vectors can specifically be used to represent the changing rules of the weighting coefficients of each spatial domain basis vector in each frequency domain unit.
  • the change pattern represented by the frequency domain basis vector is related to factors such as multipath delay.
  • the channel state information sent by the terminal to the network device includes a frequency domain basis vector indication information.
  • This frequency domain basis vector indication information is actually shared by multiple CSI-RS resources and can also be understood as a The frequency domain basis vector indication information corresponds to multiple CSI-RS resources.
  • each CSI-RS resource corresponds to a TRP, that is to say, these N CSI-RS resources correspond to N TRPs, and the terminal reports a frequency domain base vector indication information shared by multiple TRPs.
  • the frequency domain basis vector indicated by the frequency domain basis vector indication information is W f , which represents a frequency domain basis vector matrix, N 3 represents the number of PMI subbands, and M represents the number of frequency domain basis vectors corresponding to CSI-RS resources.
  • one frequency domain basis vector indication information may also correspond to multiple port groups of one CSI-RS resource.
  • the channel state information includes a frequency domain basis vector indication information, and the frequency domain basis vector indication information corresponds to multiple port groups.
  • the channel state information sent by the terminal to the network device includes a frequency domain basis vector indication information.
  • This frequency domain basis vector indication information is actually shared by multiple port groups and can also be understood as a frequency domain basis vector indication information.
  • the base vector indication information corresponds to multiple port groups.
  • each port group corresponds to a TRP, that is to say, these N port groups correspond to N TRPs, and the terminal reports a frequency domain base vector indication information shared by multiple TRPs.
  • the frequency domain basis vector indicated by the frequency domain basis vector indication information is W f , which represents a frequency domain basis vector matrix, N 3 represents the number of PMI subbands, and M represents the number of frequency domain basis vectors corresponding to the port group.
  • the air domain basis vector indication information, combination coefficient indication information and frequency domain basis vector indication information indicated by the channel state information in the embodiment of the present application all correspond to CSI-RS resources at the same time, or to the port group at the same time. .
  • the embodiment of the present application takes the terminal sending information specifically indicating channel state information to the network device as an example for explanation.
  • the network device needs to first configure codebook parameter information for the terminal, and then the terminal sends channel state information to the network device based on the codebook parameter information.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each CSI-RS resource, the number of frequency domain basis vectors corresponding to the CSI-RS resource, the number of PMI subbands or the number of transmission At least one of the antenna port numbers.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each port group, the number of frequency domain basis vectors corresponding to the port group, the number of PMI subbands, or the number of transmitting antenna ports. at least one of.
  • the terminal determines the parameters indicated by the channel state information based on the configured codebook parameter information, and then sends the channel state information to the network device.
  • W represents the codebook structure
  • N represents the number of CSI-RS resources
  • N t represents the number of transmit antenna ports
  • P represents the number of CSI-RS ports
  • Li represents the i ⁇ 1,...,N ⁇ th CSI-
  • M represents the number of frequency domain basis vectors corresponding to the i-th CSI-RS resource
  • N 3 represents the number of PMI subbands indicated by the precoding matrix.
  • W 1,i represents a matrix composed of Li spatial domain basis vectors or unit basis vectors used for port selection corresponding to the i-th CSI-RS resource, represents a matrix composed of combined coefficients
  • W f represents a matrix composed of M frequency domain basis vectors
  • W represents the codebook structure
  • N represents the number of port groups
  • N t represents the number of transmit antenna ports
  • P represents the number of CSI-RS ports
  • Li represents the i ⁇ 1,...,N ⁇ th port group.
  • M represents the number of frequency domain basis vectors corresponding to the i-th port group
  • N 3 represents the number of PMI subbands indicated by the precoding matrix.
  • W 1,i represents the matrix composed of L i spatial domain basis vectors or unit basis vectors used for port selection corresponding to the i-th port group
  • W f represents a matrix composed of M frequency domain basis vectors
  • the UE reports the indication information of W 1,1 , W 1,2 and W 1,3 respectively, and Each quantization coefficient information in is used by the network device to calculate the precoding of the terminal.
  • the second type multiple CSI-RS resources are grouped to obtain G CSI-RS resource groups, and the channel state information indicates information corresponding to each CSI-RS resource group in the G CSI-RS resource groups.
  • G is the same as the number of CSI-RS resource groups of multiple CSI-RS resources, the CSI-RS resource group includes at least one CSI-RS resource, and G is a positive integer greater than 1.
  • multiple port groups are grouped to obtain G first groups, and the channel state information indicates information corresponding to each of the G first groups.
  • G is the same as the number of first groups of multiple port groups, the first group includes at least one port group, and G is a positive integer greater than 1.
  • the channel state information indicates at least one of the following information:
  • G air domain basis vector indication information or G port selection indication information (1) G air domain basis vector indication information or G port selection indication information.
  • the spatial domain basis vector indication information is represented by SD basis (Spatial Domain basis, spatial domain basis vector).
  • the spatial domain basis vector indication information is used to indicate the L g spatial domain basis vectors selected by the terminal.
  • L g represents the number of spatial domain basis vectors corresponding to the g ⁇ 1,...,G ⁇ th CSI-RS resource group. Among them, L g represents the number and value of the air domain basis vector corresponding to each CSI-RS resource in the g-th CSI-RS resource group.
  • the port selection indication information is used to indicate L g CSI-RS ports selected by the terminal.
  • L g represents the number of CSI-RS ports corresponding to the g ⁇ 1,...,G ⁇ -th first group. Among them, L g represents the number and value of CSI-RS ports corresponding to each port group in the g-th first group.
  • the channel state information sent by the terminal to the network device indicates G air domain basis vector indication information or G port selection indication information.
  • the G air domain basis vector indication information or G port selection indication information is actually related to the G CSI-RS
  • the corresponding number of resource groups can also be understood as a one-to-one correspondence between air domain basis vector indication information or port selection indication information and CSI-RS resource groups.
  • each CSI-RS resource group includes at least one CSI-RS resource, and each CSI-RS resource corresponds to a TRP. That is to say, the terminal reports the airspace base corresponding to the CSI-RS resource in each CSI-RS resource group.
  • Vector or port selection indication information is to indicate whether the terminal is to the network device.
  • the spatial basis vector is W 1,g , W 1,g represents a matrix composed of one or more air domain basis vectors corresponding to the g-th CSI-RS resource group, N g represents the number of CSI-RS resources or the number of port groups in the g-th group, N t represents the number of transmit antenna ports, L g represents the number of air domain basis vectors or CSI-RS ports selected in the g-th group, Represents a complex matrix with dimensions N g N t ⁇ 2L g .
  • the embodiment of this application includes four CSI-RS resources, and CSI-RS resource 1 and CSI-RS resource 2 are the first CSI-RS resource group, and CSI-RS resource 3 and CSI-RS resource 4 are the first CSI-RS resource group.
  • 2CSI-RS resource group, and CSI-RS resource 1, CSI-RS resource 2, CSI-RS resource 3 and CSI-RS resource 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first CSI -RS resource group
  • TRP3 and TRP4 are the second CSI-RS resource group
  • the embodiment of the present application takes the grouping of CSI-RS resources to obtain G CSI-RS resource groups as an example for explanation.
  • multiple port groups of one CSI-RS resource can also be grouped to obtain G first groups.
  • the channel state information sent by the terminal to the network device indicates G air domain basis vector indication information or G port selection indication information.
  • the G air domain basis vector indication information or G port selection indication information is actually related to the G first packets.
  • the corresponding number can also be understood as a one-to-one correspondence between the spatial domain basis vector indication information or the port selection indication information and the first packet.
  • each first group includes at least one port group, and each port group corresponds to a TRP. That is to say, the terminal reports the air domain base vector or port selection indication information corresponding to the port group in each first group.
  • the spatial basis vector is W 1,g , W 1,g represents the matrix composed of air domain basis vectors corresponding to the g-th first group, N g represents the number of CSI-RS resources or the number of port groups in the g-th group, and N t represents the number of transmit antenna ports , L g represents the number of airspace basis vectors or CSI-RS ports selected by the g-th group, Represents a complex matrix with dimensions N g N t ⁇ 2L g .
  • the embodiment of the present application includes four port groups, and port group 1 and port group 2 are the first first group, port group 3 and port group 4 are the second first group, and port group 1 and port group Group 2, port group 3 and port group 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first group
  • TRP3 and TRP4 are the second group
  • the channel state information sent by the terminal to the network device indicates G combination coefficient indication information.
  • the G combination coefficient indication information actually corresponds to the number of G CSI-RS resource groups. It can also be understood that It is a one-to-one correspondence between the combination coefficient indication information and the CSI-RS resource group.
  • each CSI-RS resource group includes at least one CSI-RS resource, and each CSI-RS resource corresponds to a TRP. That is to say, the terminal reports the combination coefficient corresponding to the CSI-RS resource in each CSI-RS resource group. Instructions.
  • the combination coefficient indication information is Represents the combined coefficient matrix.
  • N g represents the number of CSI-RS resources in the g-th group
  • L g represents the number of CSI-RS ports selected in the g-th group
  • M g represents the number of frequency domain basis vectors selected in the g-th group
  • the embodiment of this application includes four CSI-RS resources, and CSI-RS resource 1 and CSI-RS resource 2 are the first CSI-RS resource group, and CSI-RS resource 3 and CSI-RS resource 4 are the first CSI-RS resource group.
  • 2CSI-RS resource group, and CSI-RS resource 1, CSI-RS resource 2, CSI-RS resource 3 and CSI-RS resource 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first CSI -RS resource group
  • TRP3 and TRP4 are the second CSI-RS resource group
  • the embodiment of the present application takes the grouping of CSI-RS resources to obtain G CSI-RS resource groups as an example for explanation.
  • multiple port groups of one CSI-RS resource can also be grouped to obtain G first groups.
  • the channel state information sent by the terminal to the network device indicates G combination coefficient indication information.
  • the G combination coefficient indication information actually corresponds to the number of G first packets, and can also be understood as combination
  • the coefficient indication information corresponds to the first packet one-to-one.
  • each first group includes at least one port group, and each port group corresponds to one TRP. That is to say, the terminal reports the combination coefficient indication information corresponding to the port group in each first group.
  • the combination coefficient indication information is Represents the combined coefficient matrix.
  • N g represents the number of port groups in the g-th group
  • L g represents the number of CSI-RS ports selected in the g-th group
  • M g represents the number of frequency domain basis vectors selected in the g-th group
  • the embodiment of the present application includes four port groups, and port group 1 and port group 2 are the first first group, port group 3 and port group 4 are the second first group, and port group 1 and port group Group 2, port group 3 and port group 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first group
  • TRP3 and TRP4 are the second group
  • the channel state information sent by the terminal to the network device indicates G frequency domain basis vectors.
  • the G frequency domain basis vector indication information actually corresponds to the number of G CSI-RS resource groups. It may also be It is understood that the frequency domain basis vector indication information corresponds to the CSI-RS resource group one-to-one.
  • each CSI-RS resource group includes at least one CSI-RS resource, and each CSI-RS resource corresponds to a TRP. That is to say, the terminal reports the frequency domain corresponding to the CSI-RS resource in each CSI-RS resource group. basis vector.
  • the frequency domain basis vector is Represents the frequency domain basis vector matrix.
  • N represents the number of CSI-RS resources
  • M g represents the number of frequency domain basis vectors selected in the g-th group
  • H is the conjugate transpose
  • the embodiment of this application includes four CSI-RS resources, and CSI-RS resource 1 and CSI-RS resource 2 are the first CSI-RS resource group, and CSI-RS resource 3 and CSI-RS resource 4 are the first CSI-RS resource group.
  • 2CSI-RS resource group, and CSI-RS resource 1, CSI-RS resource 2, CSI-RS resource 3 and CSI-RS resource 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first CSI -RS resource group
  • TRP3 and TRP4 are the second CSI-RS resource group
  • the embodiment of the present application takes the grouping of CSI-RS resources to obtain G CSI-RS resource groups as an example for explanation.
  • multiple port groups of one CSI-RS resource can also be grouped to obtain G first groups.
  • the channel state information sent by the terminal to the network device indicates G frequency domain basis vectors.
  • the G frequency domain basis vector indication information actually corresponds to the number of G first packets, which can also be understood as The frequency domain basis vector indication information corresponds to the first packet one-to-one.
  • each first group includes at least one port group, and each port group corresponds to one TRP. That is to say, the terminal reports the frequency domain basis vector corresponding to the port group in each first group.
  • the frequency domain basis vector is Represents the frequency domain basis vector matrix.
  • H is the conjugate transpose.
  • N g represents the number of CSI-RS resources or the number of port groups in the g-th group
  • H is the conjugate transpose
  • N 3 represents the number of PMI subbands
  • M g represents the frequency domain base selected in the g-th group.
  • the number of vectors Represents a complex matrix with dimensions N 3 ⁇ M g .
  • the embodiment of the present application includes 4 port groups, and port group 1 and port group 2 are the first first group, port group 3 and port group 4 are the second first group, and port group 1, port group Group 2, port group 3 and port group 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first group
  • TRP3 and TRP4 are the second group
  • the air domain basis vector indication information, combination coefficient indication information and frequency domain basis vector indication information indicated by the channel state information correspond to the CSI-RS resource group at the same time, or to the port group at the same time. Corresponding to the first group.
  • the embodiment of the present application takes the terminal sending information specifically indicating the channel state information to the network device as an example for explanation.
  • the network device needs to first configure codebook parameter information for the terminal, and then the terminal sends channel state information to the network device based on the codebook parameter information.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each CSI-RS resource, the number of frequency domain basis vectors corresponding to the CSI-RS resource, the number of PMI subbands or the number of transmission At least one of the antenna port numbers.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each port group, the number of frequency domain basis vectors corresponding to the port group, the number of PMI subbands, or the number of transmitting antenna ports. at least one of.
  • the terminal determines the parameters indicated by the channel state information based on the configured codebook parameter information, and then sends the channel state information to the network device.
  • W represents the codebook structure
  • W 1,g represents the spatial domain basis vector corresponding to the CSI-RS resource in the g-th group or a matrix composed of unit basis vectors used for port selection
  • N g represents the matrix in the g-th group.
  • the number of CSI-RS resources N t represents the number of transmit antenna ports
  • W f,g represents the matrix composed of M g frequency domain basis vectors corresponding to the CSI-RS resources in the g-th group
  • M g represents the Select the number of frequency domain basis vectors
  • L g represents the number of air domain basis vectors or CSI-RS ports selected in the g-th group
  • G represents the CSI associated with the CSI-RS resources.
  • G is a positive integer greater than 1
  • H is the conjugate transpose
  • N 3 represents the number of PMI subbands
  • W represents the codebook structure
  • W 1,g represents the spatial domain basis vector corresponding to the port group in the g-th group or a matrix composed of unit basis vectors used for port selection
  • N g represents the port group in the g-th group.
  • the number of _ number represents a matrix composed of combination coefficients corresponding to the port group in the g-th group
  • L g represents the number of air domain basis vectors or CSI-RS ports selected in the g-th group
  • G represents the group with the first group of the port group
  • G is a positive integer greater than 1
  • H is the conjugate transpose
  • N 3 represents the number of sub-bands of PMI
  • channel status information indicates at least one of the following information:
  • One air domain base vector indication information or one port selection indication information corresponds to multiple CSI-RS resources.
  • the spatial domain basis vector indication information is represented by SD basis (Spatial Domain basis, spatial domain basis vector).
  • the spatial domain basis vector indication information is used to indicate the N*N t spatial domain basis vectors selected by the terminal.
  • the port selection indication information is used to indicate the N*N t CSI-RS ports selected by the terminal, N represents the number of the CSI-RS resources, or the number of the port groups, and N t represents the number of transmitting antenna ports .
  • the channel state information sent by the terminal to the network device indicates an air domain base vector indication information or a port selection indication information.
  • This air domain base vector indication information or port selection indication information actually corresponds to the number of multiple CSI-RS resources.
  • the air domain basis vector indication information or port selection indication information is applicable to multiple CSI-RS resources.
  • each CSI-RS resource corresponds to a TRP, that is to say, this air domain base vector indication information or port selection indication information corresponds to N TRPs, and the terminal reports air domain base vectors or port selection indication information corresponding to N TRPs.
  • the spatial basis vector is W 1 , and the or W 1 represents a matrix composed of L air domain basis vectors corresponding to multiple CSI-RS resources, N represents the number of CSI-RS resources, N t represents the number of transmitting antenna ports, and L represents the air domain basis vector corresponding to the CSI-RS resource or
  • the number of CSI-RS ports, P is the number of CSI-RS ports, Represents a complex matrix with dimensions NN t ⁇ 2L, Represents a complex matrix with dimensions NP ⁇ 2L.
  • an air domain base vector indication information or a port selection indication information takes as an example the correspondence between an air domain base vector indication information or a port selection indication information and a CSI-RS resource.
  • an air domain basis vector indication information or a port selection indication information may also correspond to multiple port groups of a CSI-RS resource.
  • the channel state information indicates an air domain basis vector indication information or a port selection indication information, and the air domain basis vector indication information or port selection indication information corresponds to multiple port groups.
  • the channel state information sent by the terminal to the network device indicates an air domain basis vector indication information or a port selection indication information.
  • This air domain basis vector indication information or port selection indication information actually corresponds to the number of multiple port groups, and also It can be understood that the air domain basis vector indication information or port selection indication information is applicable to multiple port groups.
  • each port group corresponds to a TRP, that is to say, this air domain basis vector indication information or port selection indication information corresponds to N TRPs, and the terminal reports the air domain basis vectors corresponding to N TRPs.
  • the spatial basis vector is W 1 , and the or W 1 represents a matrix composed of L air domain basis vectors corresponding to multiple port groups, N represents the number of port groups, N t represents the number of transmit antenna ports, and L represents the air domain basis vector or CSI-RS port corresponding to the CSI-RS resource.
  • the number of , P is the number of CSI-RS ports, Represents a complex matrix with dimensions NN t ⁇ 2L, Represents a complex matrix with dimensions NP ⁇ 2L.
  • the channel state information sent by the terminal to the network device indicates a combination coefficient indication information.
  • This combination coefficient indication information is actually shared by multiple CSI-RS resources and can also be understood as a combination coefficient indication information.
  • each CSI-RS resource corresponds to a TRP, that is to say, these N CSI-RS resources correspond to N TRPs, and the terminal reports a combination coefficient indication information shared by multiple TRPs.
  • the combination coefficient indication information is Represents the combined coefficient matrix.
  • N represents the number of CSI-RS resources
  • L represents the number of spatial domain basis vectors or CSI-RS ports corresponding to CSI-RS resources
  • M represents the number of frequency domain basis vectors corresponding to CSI-RS resources.
  • the number of CSI-RS resources is 2, and the number of spatial domain basis vectors corresponding to each CSI-RS resource is 4, and L is 4, the number of frequency domain basis vectors corresponding to at least two CSI-RS resources The number is 4, then M is 4,
  • one combination coefficient indication information may also correspond to multiple port groups of one CSI-RS resource.
  • the channel state information sent by the terminal to the network device indicates a combination coefficient indication information.
  • This combination coefficient indication information is actually shared by multiple port groups. It can also be understood that one combination coefficient indication information corresponds to multiple port groups. port group.
  • each port group corresponds to a TRP, that is, these N port groups correspond to N TRPs, and the terminal reports a combination coefficient indication information shared by multiple TRPs.
  • the combination coefficient indication information is Represents the combined coefficient matrix.
  • N represents the number of port groups
  • L represents the number of air domain basis vectors or CSI-RS ports corresponding to the CSI-RS resource
  • M represents the number of frequency domain basis vectors corresponding to the port group.
  • the frequency domain basis vector indication information is used to indicate the M frequency domain basis vectors selected by the terminal.
  • the channel state information sent by the terminal to the network device indicates a frequency domain basis vector indication information.
  • This frequency domain basis vector indication information is actually shared by multiple CSI-RS resources and can also be understood as a
  • the frequency domain basis vector indication information corresponds to multiple CSI-RS resources.
  • each CSI-RS resource corresponds to a TRP, that is to say, these N CSI-RS resources correspond to N TRPs, and the terminal reports a frequency domain base vector indication information shared by multiple TRPs.
  • the frequency domain basis vector indication information is W f , which represents the frequency domain basis vector matrix
  • N 3 represents the number of PMI subbands
  • M represents the number of frequency domain basis vectors corresponding to CSI-RS resources
  • one air domain basis vector indication information may also correspond to multiple port groups of one CSI-RS resource.
  • the channel state information sent by the terminal to the network device indicates a frequency domain basis vector indication information.
  • This frequency domain basis vector indication information is actually shared by multiple port groups and can also be understood as a frequency domain basis vector indication information.
  • the base vector indication information corresponds to multiple port groups.
  • each port group corresponds to a TRP, that is to say, these N port groups correspond to N TRPs, and the terminal reports a frequency domain base vector indication information shared by multiple TRPs.
  • the frequency domain basis vector indication information is W f , which represents the frequency domain basis vector matrix
  • N 3 represents the number of PMI subbands
  • M represents the number of frequency domain basis vectors corresponding to the port group
  • the embodiment of the present application takes the terminal sending information specifically indicating the channel state information to the network device as an example for explanation.
  • the network device needs to first configure codebook parameter information for the terminal, and then the terminal sends channel state information to the network device based on the codebook parameter information.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each CSI-RS resource, the number of frequency domain basis vectors corresponding to the CSI-RS resource, the number of PMI subbands or the number of transmission At least one of the antenna port numbers.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each port group, the number of frequency domain basis vectors corresponding to the port group, the number of PMI subbands, or the number of transmitting antenna ports. at least one of.
  • the terminal determines the parameters indicated by the channel state information based on the configured codebook parameter information, and then sends the channel state information to the network device.
  • M represents the codebook structure
  • N represents the number of CSI-RS resources
  • N t represents the number of transmit antenna ports
  • P represents the number of CSI-RS ports
  • L represents the air domain basis vector or CSI-RS port corresponding to the CSI-RS resource.
  • the number of M represents the number of frequency domain basis vectors corresponding to the CSI-RS resource
  • N 3 represents the number of PMI subbands indicated by the precoding matrix.
  • W 1 represents the matrix of L spatial domain basis vectors or unit basis vectors used for port selection of the CSI-RS resource, represents a matrix composed of combination coefficient indication information
  • W f represents a matrix composed of M frequency domain basis vectors
  • H is the conjugate transpose
  • the combination coefficient indication information includes multiple types of information.
  • the combined coefficient indication information includes non-zero coefficient information and non-zero coefficient position information, the non-zero coefficient information indicates the non-zero coefficient in the combined coefficient indication information, and the non-zero coefficient position information indicates that the non-zero coefficient is in the combined coefficient indication information. s position.
  • the embodiment of the present application takes the terminal sending information specifically indicating the channel state information to the network device as an example for explanation.
  • the network device needs to first configure codebook parameter information for the terminal, and then the terminal sends channel state information to the network device based on the codebook parameter information.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each CSI-RS resource, the number of frequency domain basis vectors corresponding to the CSI-RS resource, the number of PMI subbands or the number of transmission At least one of the antenna port numbers.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each port group, the number of frequency domain basis vectors corresponding to the port group, the number of PMI subbands, or the number of transmitting antenna ports. at least one of.
  • the terminal determines the parameters indicated by the channel state information based on the configured codebook parameter information, and then sends the channel state information to the network device.
  • the parameters indicated by the channel state information include a variety of situations, which expands the way of indicating parameters, thereby increasing the diversity of indicated parameters.
  • the method includes:
  • Step 401 The terminal determines air domain basis vector indication information or port selection indication information, combination coefficient indication information and frequency domain basis vector indication information based on the channel information or effective channel information and codebook parameter information corresponding to each CSI-RS resource.
  • the effective channel information refers to the channel information that can be used, and can also be understood as channel information including effective parameters.
  • the terminal after the terminal measures each CSI-RS resource, it can determine the channel information or effective channel information corresponding to each CSI-RS resource, and the terminal can also determine the channel information or effective channel information based on the determined channel information or effective channel information and
  • the codebook parameter information determines the air domain basis vector indication information or the port selection indication information, and after the terminal determines the air domain basis vector indication information or the port selection indication information, it can also determine the combination coefficient indication information and the frequency domain basis vector indication information.
  • Step 402 The terminal sends channel state information including air domain basis vector indication information or port selection indication information, combination coefficient indication information and frequency domain basis vector indication information to the network device.
  • Step 403 The network device receives the channel state information sent by the terminal including air domain basis vector indication information or port selection indication information, combination coefficient indication information and frequency domain basis vector indication information.
  • the terminal after the terminal determines the air domain basis vector indication information or the port selection indication information, the combination coefficient indication information and the frequency domain basis vector indication information, it can further determine the channel status information, and the terminal can be instructed through the channel status information The above three types of information have been determined and then the channel state information is sent to the network device. Then the network device can receive the channel state information sent by the terminal.
  • the indication information reported to the network device includes information shared by multiple TRPs and individual parameters of each TRP. Therefore, the network can The parameters reported by the terminal determine the terminal's precoding, which not only reduces the feedback overhead through the reported common parameters, but also integrates the parameters of multiple TRPs to improve the precoding gain of higher terminals.
  • the network device will configure codebook parameters for the terminal through configuration information. See Figure 5.
  • the method includes:
  • Step 501 The network device sends configuration information to the terminal.
  • the configuration information is used to configure codebook parameter information, and the codebook parameter information is used for the terminal to determine channel state information.
  • Step 502 The terminal receives the configuration information sent by the network device.
  • the configuration information is used to configure codebook parameter information, and the codebook parameter information is used for the terminal to determine channel state information.
  • the network device sends configuration information to the terminal, and uses the configuration information to configure codebook parameter information for the terminal. Subsequently, the terminal can send channel state information to the network device based on the codebook parameter information.
  • the network device before sending configuration information to the terminal, the network device also determines the codebook structure, so that the terminal is configured with codebook parameter information that matches the codebook structure based on the codebook structure.
  • the terminal determines the codebook structure, and then indicates the determined codebook structure to the network device through indication information.
  • the terminal sends first indication information to the network device, and the first indication information indicates the adopted codebook structure.
  • the network device determines the codebook structure, and then the network device indicates the codebook structure to the terminal through indication information.
  • the terminal receives second indication information sent by the network device, and the second indication information indicates the adopted codebook structure.
  • the embodiment of the present application takes the instruction information indication codebook structure as an example for explanation.
  • the codebook structure between the network device and the terminal is agreed upon by a protocol, and the network device can directly configure the codebook parameter information corresponding to the agreed codebook structure for the terminal.
  • the network device determines the codebook structure, it then configures the codebook parameter information for the terminal according to the codebook structure, which improves the accuracy of the network device configuring the codebook parameter information.
  • Figure 6 shows a flow chart of a codebook-based precoding determination method provided by an exemplary embodiment of the present application.
  • the exemplary method can be applied to the terminal shown in Figure 1.
  • the method includes at least part of the following content content:
  • Step 601 The terminal determines the channel information corresponding to each CSI-RS resource based on at least two CSI-RS resources.
  • CSI-RS resources are used to transmit CSI-RS.
  • the CSI-RS resource is configured by the network device, and the network device can send the CSI-RS to the terminal through the configured CSI-RS resource.
  • the terminal measures CSI-RS based on at least one CSI-RS resource to obtain channel information corresponding to each measured CSI-RS resource.
  • the CSI-RS resources are CMR resources. That is to say, the CSI-RS resources in the embodiments of this application are CMR resources.
  • different CMR resources belong to the same CSI-RS resource set, or different CMR resources belong to different CSI-RS resource sets.
  • each CSI-RS resource in at least one CSI-RS resource corresponds to one TRP, and at least two TRPs are used for CJT.
  • each port group in multiple port groups in a CSI-RS resource corresponds to a TRP, and at least two TRPs are used for CJT.
  • one CSI-RS resource corresponds to multiple CSI-RS ports
  • multiple CSI-RS ports are grouped to obtain multiple port groups
  • each port group includes at least one CSI-RS port
  • each port group Corresponds to a TRP.
  • Step 602 The terminal sends channel state information to the network device according to the determined channel information corresponding to each CSI-RS resource and codebook parameter information.
  • the channel state information includes indication information corresponding to multiple CSI-RS resources and each CSI-RS resource.
  • the indication information corresponding to the RS resource, or the channel state information includes indication information corresponding to multiple port groups in a CSI-RS resource and indication information corresponding to each port group.
  • the port group includes multiple CSI-RS resources corresponding to the CSI-RS resource.
  • RS port channel state information is used to determine the precoding of the terminal based on the codebook structure corresponding to the codebook parameter information.
  • the codebook parameter information is used for the terminal to report indication information so that the network device can determine the precoding of the terminal.
  • the codebook parameter information corresponds to the codebook structure, which means that the precoding of the terminal can be determined based on the codebook parameter information corresponding to the codebook structure and the channel state information.
  • the channel state information in the embodiment of the present application is used to determine the precoding of the terminal based on the codebook structure corresponding to the codebook parameter information, and the channel state information includes indication information. That is to say, the indication information included in the channel state information is used to determine the precoding based on the codebook parameter information.
  • the codebook structure corresponding to the codebook parameter information determines the precoding of the terminal.
  • the channel state information includes indication information corresponding to multiple CSI-RS resources and indication information corresponding to each CSI-RS resource.
  • the indication information corresponding to multiple CSI-RS resources means that the indication information included in the channel state information for determining the precoding of the terminal can be applied to each CSI-RS resource, that is, sending one indication information can be applied to each CSI-RS resources.
  • the indication information corresponding to each CSI-RS resource refers to: the precoding parameters for the terminal included in the channel state information are applied to one CSI-RS resource, that is, the indication information corresponding to each CSI-RS resource is applicable to the corresponding CSI-RS resources, other CSI-RS resources are not applicable.
  • the channel state information includes indication information corresponding to multiple port groups in a CSI-RS resource and indication information corresponding to each port group.
  • the port group includes multiple CSI-RS ports corresponding to the CSI-RS resource.
  • the indication information corresponding to multiple port groups means: the indication information included in the channel state information for determining the precoding of the terminal can be applied to each port group, that is, sending one indication information can be applied to each port group.
  • the indication information corresponding to each port group refers to: the precoding indication information for the terminal included in the channel status information applies to a port group, that is, the parameters corresponding to each port group apply to the corresponding port group, and other ports Groups are not applicable.
  • the terminal after the terminal determines the channel information corresponding to each CSI-RS resource in at least one CSI-RS resource, it determines the indication information that the terminal needs to report to the network device based on the acquired channel information and codebook parameter information. , the terminal then sends channel state information including indication information to the network device, and the channel state information is used to determine the precoding parameters of the terminal.
  • the terminal determines the channel information corresponding to each CSI-RS resource. And if at least one CSI-RS resource includes one CSI-RS resource, and the CSI-RS resource corresponds to multiple CSI-RS ports, the terminal determines the channel information corresponding to each port group in the multiple port groups.
  • the network device configures codebook parameter information for the terminal through RRC signaling, or the network device configures codebook parameter information for the terminal through other signaling.
  • the terminal determines the air domain basis vector indication information, the combination coefficient indication information and the frequency domain basis vector indication information according to the channel information and codebook parameter information corresponding to each CSI-RS resource, and the terminal sends the information including the air domain basis vector to the network device.
  • the terminal after the terminal measures each CSI-RS resource, it can determine the channel information corresponding to each CSI-RS resource, and the terminal can also determine the air domain base vector based on the determined channel information and codebook parameter information.
  • indication information and after the terminal determines the air domain basis vector indication information, it can further determine the combination coefficient indication information and frequency domain basis vector indication information based on the air domain basis vector indication information and codebook parameter information.
  • the terminal determines the air domain basis vector indication information, combination After obtaining the coefficient indication information and the frequency domain basis vector indication information, the channel state information can be further determined.
  • the channel state information can be used to indicate the above three types of information that the terminal has determined, and then the channel state information can be sent to the network device.
  • the channel state information sent by the terminal indicates multiple types of information, and the multiple types of information indicated include different situations.
  • Channel status information includes at least one of the following information:
  • N air domain basis vector indication information or N port selection indication information is the same as the number of CSI-RS resources, and N is a positive integer greater than 1.
  • the spatial domain basis vector indication information is represented by SD basis (Spatial Domain basis, spatial domain basis vector).
  • the spatial domain basis vector indication information is used to indicate the Li spatial domain basis vectors selected by the terminal.
  • i belongs to ⁇ 1,2...,N ⁇ .
  • the spatial domain basis vector indication information is a spatial domain beam basis vector, which may be called a beam basis vector, a spatial domain basis vector, or a beam.
  • the port selection indication information is used to indicate Li CSI-RS ports selected by the terminal.
  • the channel state information sent by the terminal to the network device includes N air domain base vector indication information or N port selection indication information.
  • These N air domain base vector indication information or N port selection indication information are actually related to the CSI-RS resources.
  • it can also be understood as a one-to-one correspondence between the air domain basis vector indication information or the port selection indication information and the CSI-RS resources.
  • each CSI-RS resource corresponds to a TRP, that is, these N CSI-RS resources correspond to N TRPs, and the terminal reports the air domain base vector indication information or port selection indication information corresponding to each TRP.
  • the spatial domain basis vector indication information is used for explanation.
  • the spatial basis vector indicated by the spatial basis vector indication information is W 1,i , which or W 1,i represents a matrix composed of Li spatial domain basis vectors corresponding to the i -th CSI-RS resource, N represents the number of CSI-RS resources, N t represents the number of transmitting antenna ports, and Li represents the i ⁇ The number of air domain basis vectors or CSI-RS ports corresponding to 1,...,N ⁇ CSI-RS resources, and P is the number of CSI-RS ports.
  • the embodiment of the present application takes as an example the correspondence between N pieces of air domain base vector indication information or N pieces of port selection indication information and CSI-RS resources.
  • the N air domain basis vector indication information or N port selection indication information may also correspond to multiple port groups of one CSI-RS resource.
  • the channel state information includes N air domain basis vector indication information or N port selection indication information, and N is the same as the number of port groups, and N is a positive integer greater than 1.
  • the channel state information sent by the terminal to the network device includes N air domain base vector indication information or N port selection indication information. These N air domain base vector indication information or N port selection indication information actually correspond to the number of port groups. , it can also be understood that the air domain basis vector indication information or port selection indication information corresponds to the port group one-to-one.
  • each port group corresponds to a TRP, that is, these N port groups correspond to N TRPs, and the terminal reports the airspace base vector indication information or port selection indication information corresponding to each TRP.
  • the spatial basis vector indication information is used for explanation.
  • the spatial basis vector indicated by the spatial basis vector indication information is W 1,i , and the spatial basis vector is W 1,i .
  • W 1,i represents a matrix composed of Li air domain basis vectors corresponding to the i - th port group, N represents the number of at least two port groups, N t represents the number of transmitting antenna ports, and Li represents the i ⁇ 1 ,...,N ⁇ port groups correspond to the number of air domain basis vectors or CSI-RS ports, and P is the number of CSI-RS ports.
  • the channel state information sent by the terminal to the network device includes a combination coefficient indication information.
  • This combination coefficient indication information is actually shared by multiple CSI-RS resources and can also be understood as a combination coefficient indication information.
  • each CSI-RS resource corresponds to a TRP, that is, these N CSI-RS resources correspond to N TRPs, and the terminal reports a combination coefficient indication information shared by multiple TRPs.
  • the combination coefficient matrix indicated by the combination coefficient indication information is N represents the number of CSI-RS resources
  • Li represents the air domain basis vector indication information or the number of CSI-RS ports corresponding to the i ⁇ 1,...,N ⁇ th CSI-RS resource
  • M represents the CSI-RS resources. The number of corresponding frequency domain basis vectors.
  • one combination coefficient indication information may also correspond to multiple port groups of one CSI-RS resource.
  • the channel state information includes a combination coefficient indication information, and the combination coefficient indication information corresponds to multiple port groups.
  • the channel state information sent by the terminal to the network device includes a combination coefficient indication information.
  • This combination coefficient indication information is actually shared by multiple port groups. It can also be understood that one combination coefficient indication information corresponds to multiple port groups. port group.
  • each port group corresponds to a TRP, that is, these N port groups correspond to N TRPs, and the terminal reports a combination coefficient indication information shared by multiple TRPs.
  • the combination coefficient matrix indicated by the combination coefficient indication information is N represents the number of port groups, L i represents the number of air domain basis vectors or CSI-RS ports corresponding to the i ⁇ ⁇ 1,...,N ⁇ th port group, and M represents the number of frequency domain basis vectors corresponding to the port group. number.
  • the frequency domain basis vector indication information is used to indicate the M frequency domain basis vectors selected by the terminal.
  • the frequency domain basis vector indication information is used to characterize the changing pattern of the channel in the frequency domain.
  • the frequency domain basis vectors can specifically be used to represent the changing rules of the weighting coefficients of each spatial domain basis vector in each frequency domain unit.
  • the change pattern represented by the frequency domain basis vector is related to factors such as multipath delay.
  • the channel state information sent by the terminal to the network device includes a frequency domain basis vector indication information.
  • This frequency domain basis vector indication information is actually shared by multiple CSI-RS resources and can also be understood as a The frequency domain basis vector indication information corresponds to multiple CSI-RS resources.
  • each CSI-RS resource corresponds to a TRP, that is to say, these N CSI-RS resources correspond to N TRPs, and the terminal reports a frequency domain base vector indication information shared by multiple TRPs.
  • the frequency domain basis vector indicated by the frequency domain basis vector indication information is W f , which represents a frequency domain basis vector matrix, N 3 represents the number of PMI subbands, and M represents the number of frequency domain basis vectors corresponding to CSI-RS resources.
  • one frequency domain basis vector indication information may also correspond to multiple port groups of one CSI-RS resource.
  • the channel state information includes a frequency domain basis vector indication information, and the frequency domain basis vector indication information corresponds to multiple port groups.
  • the channel state information sent by the terminal to the network device includes a frequency domain basis vector indication information.
  • This frequency domain basis vector indication information is actually shared by multiple port groups and can also be understood as a frequency domain basis vector indication information.
  • the base vector indication information corresponds to multiple port groups.
  • each port group corresponds to a TRP, that is to say, these N port groups correspond to N TRPs, and the terminal reports a frequency domain base vector indication information shared by multiple TRPs.
  • the frequency domain basis vector indicated by the frequency domain basis vector indication information is W f , which represents a frequency domain basis vector matrix, N 3 represents the number of PMI subbands, and M represents the number of frequency domain basis vectors corresponding to the port group.
  • the air domain basis vector indication information, combination coefficient indication information and frequency domain basis vector indication information indicated by the channel state information in the embodiment of the present application all correspond to CSI-RS resources at the same time, or to the port group at the same time. .
  • the embodiment of the present application is explained by taking the terminal to send information specifically indicating the channel state information to the network device as an example.
  • the network device needs to first configure codebook parameter information for the terminal, and then the terminal sends channel state information to the network device based on the codebook parameter information.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each CSI-RS resource, the number of frequency domain basis vectors corresponding to the CSI-RS resource, the number of PMI subbands or the number of transmission At least one of the antenna port numbers.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each port group, the number of frequency domain basis vectors corresponding to the port group, the number of PMI subbands, or the number of transmitting antenna ports. at least one of.
  • the terminal determines the parameters indicated by the channel state information based on the configured codebook parameter information, and then sends the channel state information to the network device.
  • the second type multiple CSI-RS resources are grouped to obtain G CSI-RS resource groups, and the channel state information indicates information corresponding to each CSI-RS resource group in the G CSI-RS resource groups.
  • G is the same as the number of CSI-RS resource groups of multiple CSI-RS resources, the CSI-RS resource group includes at least one CSI-RS resource, and G is a positive integer greater than 1.
  • multiple port groups are grouped to obtain G first groups, and the channel state information indicates information corresponding to each of the G first groups.
  • G is the same as the number of first groups of multiple port groups, the first group includes at least one port group, and G is a positive integer greater than 1.
  • the channel state information indicates at least one of the following information:
  • G air domain basis vector indication information or G port selection indication information (1) G air domain basis vector indication information or G port selection indication information.
  • the spatial domain basis vector indication information is represented by SD basis (Spatial Domain basis, spatial domain basis vector).
  • the spatial domain basis vector indication information is used to indicate the L g spatial domain basis vectors selected by the terminal.
  • L g represents the number of spatial domain basis vectors corresponding to the g ⁇ 1,...,G ⁇ th CSI-RS resource group. Among them, L g represents the number and value of the air domain basis vector corresponding to each CSI-RS resource in the g-th CSI-RS resource group.
  • the port selection indication information is used to indicate L g CSI-RS ports selected by the terminal.
  • L g represents the number of CSI-RS ports corresponding to the g ⁇ 1,...,G ⁇ -th first group. Among them, L g represents the number and value of CSI-RS ports corresponding to each port group in the g-th first group.
  • the channel state information sent by the terminal to the network device indicates G air domain basis vector indication information or G port selection indication information.
  • the G air domain basis vector indication information or G port selection indication information is actually related to the G CSI-RS
  • the corresponding number of resource groups can also be understood as a one-to-one correspondence between air domain basis vector indication information or port selection indication information and CSI-RS resource groups.
  • each CSI-RS resource group includes at least one CSI-RS resource, and each CSI-RS resource corresponds to a TRP. That is to say, the terminal reports the airspace base corresponding to the CSI-RS resource in each CSI-RS resource group.
  • Vector or port selection indication information is to indicate whether the terminal is to the network device.
  • the spatial basis vector is W 1,g , W 1,g represents a matrix composed of one or more air domain basis vectors corresponding to the g-th CSI-RS resource group, N g represents the number of CSI-RS resources or the number of port groups in the g-th group, N t represents the number of transmit antenna ports, L g represents the number of air domain basis vectors or CSI-RS ports selected in the g-th group, Represents a complex matrix with dimensions N g N t ⁇ 2L g .
  • the embodiment of this application includes four CSI-RS resources, and CSI-RS resource 1 and CSI-RS resource 2 are the first CSI-RS resource group, and CSI-RS resource 3 and CSI-RS resource 4 are the first CSI-RS resource group.
  • 2CSI-RS resource group, and CSI-RS resource 1, CSI-RS resource 2, CSI-RS resource 3 and CSI-RS resource 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first CSI -RS resource group
  • TRP3 and TRP4 are the second CSI-RS resource group
  • the embodiment of the present application takes the grouping of CSI-RS resources to obtain G CSI-RS resource groups as an example for explanation.
  • multiple port groups of one CSI-RS resource can also be grouped to obtain G first groups.
  • the channel state information sent by the terminal to the network device indicates G air domain basis vector indication information or G port selection indication information.
  • the G air domain basis vector indication information or G port selection indication information is actually related to the G first packets.
  • the corresponding number can also be understood as a one-to-one correspondence between the spatial domain basis vector indication information or the port selection indication information and the first packet.
  • each first group includes at least one port group, and each port group corresponds to one TRP. That is to say, the terminal reports the air domain base vector or port selection indication information corresponding to the port group in each first group.
  • the spatial basis vector is W 1,g , W 1,g represents the matrix composed of air domain basis vectors corresponding to the g-th first group, N g represents the number of CSI-RS resources or the number of port groups in the g-th group, and N t represents the number of transmit antenna ports , L g represents the number of airspace basis vectors or CSI-RS ports selected by the g-th group, Represents a complex matrix with dimensions N g N t ⁇ 2L g .
  • the embodiment of the present application includes four port groups, and port group 1 and port group 2 are the first first group, port group 3 and port group 4 are the second first group, and port group 1 and port group Group 2, port group 3 and port group 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first group
  • TRP3 and TRP4 are the second group
  • the channel state information sent by the terminal to the network device indicates G combination coefficient indication information.
  • the G combination coefficient indication information actually corresponds to the number of G CSI-RS resource groups. It can also be understood that It is a one-to-one correspondence between the combination coefficient indication information and the CSI-RS resource group.
  • each CSI-RS resource group includes at least one CSI-RS resource, and each CSI-RS resource corresponds to a TRP. That is to say, the terminal reports the combination coefficient corresponding to the CSI-RS resource in each CSI-RS resource group. Instructions.
  • the combination coefficient indication information is Represents the combined coefficient matrix.
  • N g represents the number of CSI-RS resources in the g-th group
  • L g represents the number of CSI-RS ports selected in the g-th group
  • M g represents the number of frequency domain basis vectors selected in the g-th group
  • the embodiment of this application includes four CSI-RS resources, and CSI-RS resource 1 and CSI-RS resource 2 are the first CSI-RS resource group, and CSI-RS resource 3 and CSI-RS resource 4 are the first CSI-RS resource group.
  • 2CSI-RS resource group, and CSI-RS resource 1, CSI-RS resource 2, CSI-RS resource 3 and CSI-RS resource 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first CSI - RS resource group
  • TRP3 and TRP4 are the second CSI-RS resource group
  • the embodiment of the present application takes the grouping of CSI-RS resources to obtain G CSI-RS resource groups as an example for explanation.
  • multiple port groups of one CSI-RS resource can also be grouped to obtain G first groups.
  • the channel state information sent by the terminal to the network device indicates G combination coefficient indication information.
  • the G combination coefficient indication information actually corresponds to the number of G first packets, and can also be understood as combination
  • the coefficient indication information corresponds to the first packet one-to-one.
  • each first group includes at least one port group, and each port group corresponds to one TRP. That is to say, the terminal reports the combination coefficient indication information corresponding to the port group in each first group.
  • the combination coefficient indication information is Represents the combined coefficient matrix.
  • N g represents the number of port groups in the g-th group
  • L g represents the number of CSI-RS ports selected in the g-th group
  • M g represents the number of frequency domain basis vectors selected in the g-th group
  • the embodiment of the present application includes four port groups, and port group 1 and port group 2 are the first first group, port group 3 and port group 4 are the second first group, and port group 1 and port group Group 2, port group 3 and port group 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first group
  • TRP3 and TRP4 are the second group
  • the channel state information sent by the terminal to the network device indicates G frequency domain basis vectors.
  • the G frequency domain basis vector indication information actually corresponds to the number of G CSI-RS resource groups. It may also be It is understood that the frequency domain basis vector indication information corresponds to the CSI-RS resource group one-to-one.
  • each CSI-RS resource group includes at least one CSI-RS resource, and each CSI-RS resource corresponds to a TRP. That is to say, the terminal reports the frequency domain corresponding to the CSI-RS resource in each CSI-RS resource group. basis vector.
  • the frequency domain basis vector is Represents the frequency domain basis vector matrix.
  • N represents the number of CSI-RS resources
  • M g represents the number of frequency domain basis vectors selected in the g-th group
  • H is the conjugate transpose
  • the embodiment of this application includes four CSI-RS resources, and CSI-RS resource 1 and CSI-RS resource 2 are the first CSI-RS resource group, and CSI-RS resource 3 and CSI-RS resource 4 are the first CSI-RS resource group.
  • 2CSI-RS resource group, and CSI-RS resource 1, CSI-RS resource 2, CSI-RS resource 3 and CSI-RS resource 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first CSI -RS resource group
  • TRP3 and TRP4 are the second CSI-RS resource group
  • the embodiment of the present application takes the grouping of CSI-RS resources to obtain G CSI-RS resource groups as an example for explanation.
  • multiple port groups of one CSI-RS resource can also be grouped to obtain G first groups.
  • the channel state information sent by the terminal to the network device indicates G frequency domain basis vectors.
  • the G frequency domain basis vector indication information actually corresponds to the number of G first packets, which can also be understood as The frequency domain basis vector indication information corresponds to the first packet one-to-one.
  • each first group includes at least one port group, and each port group corresponds to one TRP. That is to say, the terminal reports the frequency domain basis vector corresponding to the port group in each first group.
  • the frequency domain basis vector is Represents the frequency domain basis vector matrix.
  • H is the conjugate transpose.
  • N g represents the number of CSI-RS resources or the number of port groups in the g-th group
  • H is the conjugate transpose
  • N 3 represents the number of PMI subbands
  • M g represents the frequency domain base selected in the g-th group.
  • the number of vectors Represents a complex matrix with dimensions N 3 ⁇ M g .
  • the embodiment of the present application includes four port groups, and port group 1 and port group 2 are the first first group, port group 3 and port group 4 are the second first group, and port group 1 and port group Group 2, port group 3 and port group 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first group
  • TRP3 and TRP4 are the second group
  • the air domain basis vector indication information, combination coefficient indication information and frequency domain basis vector indication information indicated by the channel state information correspond to the CSI-RS resource group at the same time, or to the port group at the same time. Corresponding to the first group.
  • the embodiment of the present application takes the terminal sending information specifically indicating the channel state information to the network device as an example for explanation.
  • the network device needs to first configure codebook parameter information for the terminal, and then the terminal sends channel state information to the network device based on the codebook parameter information.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each CSI-RS resource, the number of frequency domain basis vectors corresponding to the CSI-RS resource, the number of PMI subbands or the number of transmission At least one of the antenna port numbers.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each port group, the number of frequency domain basis vectors corresponding to the port group, the number of PMI subbands, or the number of transmitting antenna ports. at least one of.
  • the terminal determines the parameters indicated by the channel state information based on the configured codebook parameter information, and then sends the channel state information to the network device.
  • channel status information indicates at least one of the following information:
  • One air domain base vector indication information or one port selection indication information corresponds to multiple CSI-RS resources.
  • the spatial domain basis vector indication information is represented by SD basis (Spatial Domain basis, spatial domain basis vector).
  • the spatial domain basis vector indication information is used to indicate the N*N t spatial domain basis vectors selected by the terminal.
  • the port selection indication information is used to indicate the N*N t CSI-RS ports selected by the terminal, N represents the number of the CSI-RS resources, or the number of the port groups, and N t represents the number of transmitting antenna ports .
  • the channel state information sent by the terminal to the network device indicates an air domain base vector indication information or a port selection indication information.
  • This air domain base vector indication information or port selection indication information actually corresponds to the number of multiple CSI-RS resources.
  • the air domain basis vector indication information or port selection indication information is applicable to multiple CSI-RS resources.
  • each CSI-RS resource corresponds to a TRP, that is to say, this air domain base vector indication information or port selection indication information corresponds to N TRPs, and the terminal reports air domain base vectors or port selection indication information corresponding to N TRPs.
  • the spatial basis vector is W 1 , and the or W 1 represents a matrix composed of L air domain basis vectors corresponding to multiple CSI-RS resources, N represents the number of CSI-RS resources, N t represents the number of transmitting antenna ports, and L represents the air domain basis vector corresponding to the CSI-RS resource or
  • the number of CSI-RS ports, P is the number of CSI-RS ports, Represents a complex matrix with dimensions NN t ⁇ 2L, Represents a complex matrix with dimensions NP ⁇ 2L.
  • an air domain base vector indication information or a port selection indication information takes as an example the correspondence between an air domain base vector indication information or a port selection indication information and a CSI-RS resource.
  • an air domain basis vector indication information or a port selection indication information may also correspond to multiple port groups of a CSI-RS resource.
  • the channel state information indicates an air domain basis vector indication information or a port selection indication information, and the air domain basis vector indication information or port selection indication information corresponds to multiple port groups.
  • the channel state information sent by the terminal to the network device indicates an air domain basis vector indication information or a port selection indication information.
  • This air domain basis vector indication information or port selection indication information actually corresponds to the number of multiple port groups, and also It can be understood that the air domain basis vector indication information or port selection indication information is applicable to multiple port groups.
  • each port group corresponds to a TRP, that is to say, this air domain basis vector indication information or port selection indication information corresponds to N TRPs, and the terminal reports the air domain basis vectors corresponding to N TRPs.
  • the spatial basis vector is W 1 , and the or W 1 represents a matrix composed of L air domain basis vectors corresponding to multiple port groups, N represents the number of port groups, N t represents the number of transmit antenna ports, and L represents the air domain basis vector or CSI-RS port corresponding to the CSI-RS resource.
  • the number of , P is the number of CSI-RS ports, Represents a complex matrix with dimensions NN t ⁇ 2L, Represents a complex matrix with dimensions NP ⁇ 2L.
  • the channel state information sent by the terminal to the network device indicates a combination coefficient indication information.
  • This combination coefficient indication information is actually shared by multiple CSI-RS resources and can also be understood as a combination coefficient indication information.
  • each CSI-RS resource corresponds to a TRP, that is, these N CSI-RS resources correspond to N TRPs, and the terminal reports a combination coefficient indication information shared by multiple TRPs.
  • the combination coefficient indication information is Represents the combined coefficient matrix.
  • N represents the number of CSI-RS resources
  • L represents the number of spatial domain basis vectors or CSI-RS ports corresponding to CSI-RS resources
  • M represents the number of frequency domain basis vectors corresponding to CSI-RS resources.
  • the number of CSI-RS resources is 2, and the number of spatial domain basis vectors corresponding to each CSI-RS resource is 4, and L is 4, the number of frequency domain basis vectors corresponding to at least two CSI-RS resources The number is 4, then M is 4,
  • one combination coefficient indication information may also correspond to multiple port groups of one CSI-RS resource.
  • the channel state information sent by the terminal to the network device indicates a combination coefficient indication information.
  • This combination coefficient indication information is actually shared by multiple port groups. It can also be understood that one combination coefficient indication information corresponds to multiple port groups. port group.
  • each port group corresponds to a TRP, that is, these N port groups correspond to N TRPs, and the terminal reports a combination coefficient indication information shared by multiple TRPs.
  • the combination coefficient indication information is Represents the combined coefficient matrix.
  • N represents the number of port groups
  • L represents the number of air domain basis vectors or CSI-RS ports corresponding to the CSI-RS resource
  • M represents the number of frequency domain basis vectors corresponding to the port group.
  • the frequency domain basis vector indication information is used to indicate the M frequency domain basis vectors selected by the terminal.
  • the channel state information sent by the terminal to the network device indicates a frequency domain basis vector indication information.
  • This frequency domain basis vector indication information is actually shared by multiple CSI-RS resources and can also be understood as a
  • the frequency domain basis vector indication information corresponds to multiple CSI-RS resources.
  • each CSI-RS resource corresponds to a TRP, that is to say, these N CSI-RS resources correspond to N TRPs, and the terminal reports a frequency domain base vector indication information shared by multiple TRPs.
  • the frequency domain basis vector indication information is W f , which represents the frequency domain basis vector matrix
  • N 3 represents the number of PMI subbands
  • M represents the number of frequency domain basis vectors corresponding to CSI-RS resources
  • one air domain basis vector indication information may also correspond to multiple port groups of one CSI-RS resource.
  • the channel state information sent by the terminal to the network device indicates a frequency domain basis vector indication information.
  • This frequency domain basis vector indication information is actually shared by multiple port groups and can also be understood as a frequency domain basis vector indication information.
  • the base vector indication information corresponds to multiple port groups.
  • each port group corresponds to a TRP, that is to say, these N port groups correspond to N TRPs, and the terminal reports a frequency domain base vector indication information shared by multiple TRPs.
  • the frequency domain basis vector indication information is W f , which represents the frequency domain basis vector matrix
  • N 3 represents the number of PMI subbands
  • M represents the number of frequency domain basis vectors corresponding to the port group
  • the embodiment of the present application takes the terminal sending information specifically indicating channel state information to the network device as an example for explanation.
  • the network device needs to first configure codebook parameter information for the terminal, and then the terminal sends channel state information to the network device based on the codebook parameter information.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each CSI-RS resource, the number of frequency domain basis vectors corresponding to the CSI-RS resource, the number of PMI subbands or the number of transmission At least one of the antenna port numbers.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each port group, the number of frequency domain basis vectors corresponding to the port group, the number of PMI subbands, or the number of transmitting antenna ports. at least one of.
  • the terminal determines the parameters indicated by the channel state information based on the configured codebook parameter information, and then sends the channel state information to the network device.
  • the combination coefficient indication information includes multiple types of information.
  • the combined coefficient indication information includes non-zero coefficient information and non-zero coefficient position information, the non-zero coefficient information indicates the non-zero coefficient in the combined coefficient indication information, and the non-zero coefficient position information indicates that the non-zero coefficient is in the combined coefficient indication information. s position.
  • the embodiment of the present application takes the terminal sending information specifically indicating the channel state information to the network device as an example for explanation.
  • the network device needs to first configure codebook parameter information for the terminal, and then the terminal sends channel state information to the network device based on the codebook parameter information.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each CSI-RS resource, the number of frequency domain basis vectors corresponding to the CSI-RS resource, the number of PMI subbands or the number of transmission At least one of the antenna port numbers.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each port group, the number of frequency domain basis vectors corresponding to the port group, the number of PMI subbands, or the number of transmitting antenna ports. at least one of.
  • the terminal determines the parameters indicated by the channel state information based on the configured codebook parameter information, and then sends the channel state information to the network device.
  • the parameters indicated by the channel state information include a variety of situations, which expands the way of indicating parameters, thereby increasing the diversity of indicated parameters.
  • the terminal determines the air domain basis vector indication information or port selection indication information, combination coefficient indication information and frequency domain basis vector indication based on the channel information or effective channel information and codebook parameter information corresponding to each CSI-RS resource. information, the terminal sends channel state information including air domain basis vector indication information or port selection indication information, combination coefficient indication information and frequency domain basis vector indication information to the network device.
  • the effective channel information refers to the channel information that can be used, and can also be understood as channel information including effective parameters.
  • the terminal after the terminal measures each CSI-RS resource, it can determine the channel information or effective channel information corresponding to each CSI-RS resource, and the terminal can also determine the channel information or effective channel information based on the determined channel information or effective channel information and
  • the codebook parameter information determines the air domain basis vector indication information or the port selection indication information, and after the terminal determines the air domain basis vector indication information or the port selection indication information, it can also determine the combination coefficient indication information and the frequency domain basis vector indication information, and then the terminal determines the channel Status information, through which the channel status information can indicate the above three types of information that the terminal has determined, and then send the channel status information to the network device.
  • the indication information reported to the network device includes information shared by multiple TRPs and individual parameters of each TRP. Therefore, the network can The parameters reported by the terminal determine the terminal's precoding, which not only reduces the feedback overhead through the reported common parameters, but also integrates the parameters of multiple TRPs to improve the precoding gain of higher terminals.
  • the terminal receives configuration information sent by the network device.
  • the configuration information is used to configure codebook parameter information
  • the codebook parameter information is used for the terminal to determine channel state information.
  • the network device sends configuration information to the terminal, and uses the configuration information to configure codebook parameter information for the terminal. Subsequently, the terminal can send channel state information to the network device based on the codebook parameter information.
  • the network device before sending configuration information to the terminal, the network device also determines the codebook structure, so that the terminal is configured with codebook parameter information that matches the codebook structure based on the codebook structure.
  • the terminal determines the codebook structure, and then indicates the determined codebook structure to the network device through indication information.
  • the terminal sends first indication information to the network device, and the first indication information indicates the adopted codebook structure.
  • the network device determines the codebook structure, and then the network device indicates the codebook structure to the terminal through indication information.
  • the terminal receives second indication information sent by the network device, and the second indication information indicates the adopted codebook structure.
  • the embodiment of the present application takes the instruction information indication codebook structure as an example for explanation.
  • the codebook structure between the network device and the terminal is agreed upon by a protocol, and the network device can directly configure the codebook parameter information corresponding to the agreed codebook structure for the terminal.
  • the network device determines the codebook structure, it then configures the codebook parameter information for the terminal according to the codebook structure, which improves the accuracy of the network device configuring the codebook parameter information.
  • Figure 7 shows a flow chart of a codebook-based precoding determination method provided by an exemplary embodiment of the present application.
  • the exemplary method can be applied to the network device shown in Figure 1.
  • the method includes at least the following contents: Part:
  • Step 701 The network device receives the channel state information sent by the terminal.
  • the channel state information includes indication information corresponding to multiple CSI-RS resources and indication information corresponding to each CSI-RS resource.
  • the channel state information includes one CSI-RS resource.
  • the port group includes multiple CSI-RS ports corresponding to CSI-RS resources.
  • the channel state information is generated by the terminal based on each of at least one CSI-RS resource.
  • the channel information and codebook parameter information corresponding to the CSI-RS resources are determined.
  • CSI-RS resources are used to transmit CSI-RS.
  • the CSI-RS resource is configured by the network device, and the network device can send the CSI-RS to the terminal through the configured CSI-RS resource.
  • the terminal measures the CSI-RS based on at least one CSI-RS resource to obtain the measured channel information corresponding to each CSI-RS resource.
  • the CSI-RS resources are CMR (Channel Measurement Resource) resources. That is to say, the CSI-RS resources in the embodiments of this application are CMR resources.
  • different CMR resources belong to the same CSI-RS resource set, or different CMR resources belong to different CSI-RS resource sets.
  • each CSI-RS resource in at least one CSI-RS resource corresponds to a TRP, and at least two TRPs are used for CJT (Coherent Joint Transmission, coherent transmission).
  • CJT Coherent Joint Transmission, coherent transmission
  • each port group in multiple port groups in a CSI-RS resource corresponds to a TRP, and at least two TRPs are used for CJT.
  • one CSI-RS resource corresponds to multiple CSI-RS ports
  • multiple CSI-RS ports are grouped to obtain multiple port groups
  • each port group includes at least one CSI-RS port
  • each port group Corresponds to a TRP.
  • the codebook parameter information is used for the terminal to report indication information so that the network device can determine the precoding of the terminal.
  • the codebook parameter information corresponds to the codebook structure, which means that the precoding of the terminal can be determined based on the codebook parameter information corresponding to the codebook structure and the channel state information.
  • the channel state information in the embodiment of the present application is used to determine the precoding of the terminal based on the codebook structure corresponding to the codebook parameter information, and the channel state information includes indication information. That is to say, the indication information included in the channel state information is used to determine the precoding based on the codebook parameter information.
  • the codebook structure corresponding to the codebook parameter information determines the precoding of the terminal.
  • the channel state information includes indication information corresponding to multiple CSI-RS resources and indication information corresponding to each CSI-RS resource.
  • the indication information corresponding to multiple CSI-RS resources means that the indication information included in the channel state information for determining the precoding of the terminal can be applied to each CSI-RS resource, that is, sending one indication information can be applied to each CSI-RS resources.
  • the indication information corresponding to each CSI-RS resource refers to: the precoding parameters for the terminal included in the channel state information are applied to one CSI-RS resource, that is, the indication information corresponding to each CSI-RS resource is applicable to the corresponding CSI-RS resources, other CSI-RS resources are not applicable.
  • the channel state information includes indication information corresponding to multiple port groups in a CSI-RS resource and indication information corresponding to each port group.
  • the port group includes multiple CSI-RS ports corresponding to the CSI-RS resource.
  • the indication information corresponding to multiple port groups means: the indication information included in the channel state information for determining the precoding of the terminal can be applied to each port group, that is, sending one indication information can be applied to each port group.
  • the indication information corresponding to each port group refers to: the precoding indication information for the terminal included in the channel status information applies to a port group, that is, the parameters corresponding to each port group apply to the corresponding port group, and other ports Groups are not applicable.
  • the terminal after the terminal determines the channel information corresponding to each CSI-RS resource in at least one CSI-RS resource, it determines the indication information that the terminal needs to report to the network device based on the acquired channel information and codebook parameter information. , the terminal then sends channel state information including indication information to the network device, and the channel state information is used to determine the precoding parameters of the terminal.
  • the terminal determines the channel information corresponding to each CSI-RS resource. And if at least one CSI-RS resource includes one CSI-RS resource, and the CSI-RS resource corresponds to multiple CSI-RS ports, the terminal determines the channel information corresponding to each port group in the multiple port groups.
  • the network device configures codebook parameter information for the terminal through RRC (Radio Resource Control, Radio Resource Control) signaling, or the network device configures codebook parameter information for the terminal through other signaling.
  • RRC Radio Resource Control, Radio Resource Control
  • Step 702 The network device determines the precoding of the terminal based on the channel state information and the codebook structure corresponding to the codebook parameter information.
  • the codebook parameter information corresponds to a codebook structure. If the structure of the codebook is different, the network device determines the precoding of the terminal based on the codebook structure in different ways.
  • the network device after receiving the channel state information, can determine parameters shared by multiple CSI-RS resources indicated by the channel state information and parameters corresponding to each CSI-RS resource based on the channel state information, or Determine the parameters shared by multiple port groups in a CSI-RS resource indicated by the channel state information and the parameters corresponding to each port group, and then determine the precoding of the terminal based on the determined parameters and the codebook structure corresponding to the codebook parameter information.
  • the indication information reported to the network device includes parameters shared by CSI-RS resources and parameters corresponding to each CSI-RS resource. Or it includes parameters shared by multiple port groups corresponding to one CSI-RS resource and parameters corresponding to each port group, and multiple CSI-RS resources or multiple port groups can be understood as corresponding to multiple TRPs, which is determined by this application. Parameters shared by multiple TRPs and individual parameters for each TRP are included. Therefore, the network device can determine the precoding of the terminal based on the parameters reported by the terminal. Not only does it reduce the feedback overhead through the reported common parameters, but it also integrates the parameters of multiple TRPs. , improving the precoding gain of the determined terminal.
  • the channel state information sent by the terminal includes a variety of information, and the multiple information included includes different situations.
  • Channel status information includes at least one of the following information:
  • N air domain basis vector indication information or N port selection indication information is the same as the number of CSI-RS resources, and N is a positive integer greater than 1.
  • the spatial domain basis vector indication information is represented by SD basis (Spatial Domain basis, spatial domain basis vector).
  • the spatial domain basis vector indication information is used to indicate the Li spatial domain basis vectors selected by the terminal.
  • i belongs to ⁇ 1,2...,N ⁇ .
  • the spatial domain basis vector indication information is a spatial domain beam basis vector, which may be called a beam basis vector, a spatial domain basis vector, or a beam.
  • the port selection indication information is used to indicate Li CSI-RS ports selected by the terminal.
  • the channel state information sent by the terminal to the network device includes N air domain base vector indication information or N port selection indication information.
  • These N air domain base vector indication information or N port selection indication information are actually related to the CSI-RS resources.
  • it can also be understood as a one-to-one correspondence between the air domain basis vector indication information or the port selection indication information and the CSI-RS resources.
  • each CSI-RS resource corresponds to a TRP, that is, these N CSI-RS resources correspond to N TRPs, and the terminal reports the air domain base vector indication information or port selection indication information corresponding to each TRP.
  • the spatial domain basis vector indication information is used for explanation.
  • the spatial basis vector indicated by the spatial basis vector indication information is W 1,i , which or W 1,i represents a matrix composed of Li spatial domain basis vectors corresponding to the i -th CSI-RS resource, N represents the number of CSI-RS resources, N t represents the number of transmitting antenna ports, and Li represents the i ⁇ The number of air domain basis vectors or CSI-RS ports corresponding to 1,...,N ⁇ CSI-RS resources, and P is the number of CSI-RS ports.
  • the embodiment of the present application takes as an example the correspondence between N pieces of air domain base vector indication information or N pieces of port selection indication information and CSI-RS resources.
  • the N air domain basis vector indication information or N port selection indication information may also correspond to multiple port groups of one CSI-RS resource.
  • the channel state information includes N air domain basis vector indication information or N port selection indication information, and N is the same as the number of port groups, and N is a positive integer greater than 1.
  • the channel state information sent by the terminal to the network device includes N air domain base vector indication information or N port selection indication information. These N air domain base vector indication information or N port selection indication information actually correspond to the number of port groups. , it can also be understood that the air domain basis vector indication information or port selection indication information corresponds to the port group one-to-one.
  • each port group corresponds to a TRP, that is, these N port groups correspond to N TRPs, and the terminal reports the airspace base vector indication information or port selection indication information corresponding to each TRP.
  • the spatial basis vector indication information is used for explanation.
  • the spatial basis vector indicated by the spatial basis vector indication information is W 1,i , and the spatial basis vector is W 1,i .
  • W 1,i represents a matrix composed of Li air domain basis vectors corresponding to the i - th port group, N represents the number of at least two port groups, N t represents the number of transmitting antenna ports, and Li represents the i ⁇ 1 ,...,N ⁇ port groups correspond to the number of air domain basis vectors or CSI-RS ports, and P is the number of CSI-RS ports.
  • the channel state information sent by the terminal to the network device includes a combination coefficient indication information.
  • This combination coefficient indication information is actually shared by multiple CSI-RS resources and can also be understood as a combination coefficient indication information.
  • each CSI-RS resource corresponds to a TRP, that is, these N CSI-RS resources correspond to N TRPs, and the terminal reports a combination coefficient indication information shared by multiple TRPs.
  • the combination coefficient matrix indicated by the combination coefficient indication information is N represents the number of CSI-RS resources
  • Li represents the air domain basis vector indication information or the number of CSI-RS ports corresponding to the i ⁇ 1,...,N ⁇ th CSI-RS resource
  • M represents the CSI-RS resources. The number of corresponding frequency domain basis vectors.
  • one combination coefficient indication information may also correspond to multiple port groups of one CSI-RS resource.
  • the channel state information includes a combination coefficient indication information, and the combination coefficient indication information corresponds to multiple port groups.
  • the channel state information sent by the terminal to the network device includes a combination coefficient indication information.
  • This combination coefficient indication information is actually shared by multiple port groups. It can also be understood that one combination coefficient indication information corresponds to multiple port groups. port group.
  • each port group corresponds to a TRP, that is, these N port groups correspond to N TRPs, and the terminal reports a combination coefficient indication information shared by multiple TRPs.
  • the combination coefficient matrix indicated by the combination coefficient indication information is N represents the number of port groups, L i represents the number of air domain basis vectors or CSI-RS ports corresponding to the i ⁇ ⁇ 1,...,N ⁇ th port group, and M represents the number of frequency domain basis vectors corresponding to the port group. number.
  • the frequency domain basis vector indication information is used to indicate the M frequency domain basis vectors selected by the terminal.
  • the frequency domain basis vector indication information is used to characterize the changing pattern of the channel in the frequency domain.
  • the frequency domain basis vectors can specifically be used to represent the changing rules of the weighting coefficients of each spatial domain basis vector in each frequency domain unit.
  • the change pattern represented by the frequency domain basis vector is related to factors such as multipath delay.
  • the channel state information sent by the terminal to the network device includes a frequency domain basis vector indication information.
  • This frequency domain basis vector indication information is actually shared by multiple CSI-RS resources and can also be understood as a The frequency domain basis vector indication information corresponds to multiple CSI-RS resources.
  • each CSI-RS resource corresponds to a TRP, that is to say, these N CSI-RS resources correspond to N TRPs, and the terminal reports a frequency domain base vector indication information shared by multiple TRPs.
  • the frequency domain basis vector indicated by the frequency domain basis vector indication information is W f , which represents a frequency domain basis vector matrix, N 3 represents the number of PMI subbands, and M represents the number of frequency domain basis vectors corresponding to CSI-RS resources.
  • one frequency domain basis vector indication information may also correspond to multiple port groups of one CSI-RS resource.
  • the channel state information includes a frequency domain basis vector indication information, and the frequency domain basis vector indication information corresponds to multiple port groups.
  • the channel state information sent by the terminal to the network device includes a frequency domain basis vector indication information.
  • This frequency domain basis vector indication information is actually shared by multiple port groups and can also be understood as a frequency domain basis vector indication information.
  • the base vector indication information corresponds to multiple port groups.
  • each port group corresponds to a TRP, that is to say, these N port groups correspond to N TRPs, and the terminal reports a frequency domain base vector indication information shared by multiple TRPs.
  • the frequency domain basis vector indicated by the frequency domain basis vector indication information is W f , which represents a frequency domain basis vector matrix, N 3 represents the number of PMI subbands, and M represents the number of frequency domain basis vectors corresponding to the port group.
  • the air domain basis vector indication information, combination coefficient indication information and frequency domain basis vector indication information indicated by the channel state information in the embodiment of the present application all correspond to CSI-RS resources at the same time, or to the port group at the same time. .
  • the embodiment of the present application is explained by taking the terminal to send information specifically indicating the channel state information to the network device as an example.
  • the network device needs to first configure codebook parameter information for the terminal, and then the terminal sends channel state information to the network device based on the codebook parameter information.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each CSI-RS resource, the number of frequency domain basis vectors corresponding to the CSI-RS resource, the number of PMI subbands or the number of transmission At least one of the antenna port numbers.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each port group, the number of frequency domain basis vectors corresponding to the port group, the number of PMI subbands, or the number of transmitting antenna ports. at least one of.
  • the terminal determines the parameters indicated by the channel state information based on the configured codebook parameter information, and then sends the channel state information to the network device.
  • W represents the codebook structure
  • N represents the number of CSI-RS resources
  • N t represents the number of transmit antenna ports
  • P represents the number of CSI-RS ports
  • Li represents the i ⁇ 1,...,N ⁇ th CSI-
  • M represents the number of frequency domain basis vectors corresponding to the i-th CSI-RS resource
  • N 3 represents the number of PMI subbands indicated by the precoding matrix.
  • W 1,i represents a matrix composed of Li spatial domain basis vectors or unit basis vectors used for port selection corresponding to the i-th CSI-RS resource, represents a matrix composed of combined coefficients
  • W f represents a matrix composed of M frequency domain basis vectors
  • W represents the codebook structure
  • N represents the number of port groups
  • N t represents the number of transmit antenna ports
  • P represents the number of CSI-RS ports
  • Li represents the i ⁇ 1,...,N ⁇ th port group.
  • M represents the number of frequency domain basis vectors corresponding to the i-th port group
  • N 3 represents the number of PMI subbands indicated by the precoding matrix.
  • W 1,i represents the matrix composed of L i spatial domain basis vectors or unit basis vectors used for port selection corresponding to the i-th port group
  • W f represents a matrix composed of M frequency domain basis vectors
  • the UE reports the indication information of W 1,1 , W 1,2 and W 1,3 respectively, and Each quantization coefficient information in is used by the network device to calculate the precoding of the terminal.
  • the second type multiple CSI-RS resources are grouped to obtain G CSI-RS resource groups, and the channel state information indicates information corresponding to each CSI-RS resource group in the G CSI-RS resource groups.
  • G is the same as the number of CSI-RS resource groups of multiple CSI-RS resources, the CSI-RS resource group includes at least one CSI-RS resource, and G is a positive integer greater than 1.
  • multiple port groups are grouped to obtain G first groups, and the channel state information indicates information corresponding to each of the G first groups.
  • G is the same as the number of first groups of multiple port groups, the first group includes at least one port group, and G is a positive integer greater than 1.
  • the channel state information indicates at least one of the following information:
  • G air domain basis vector indication information or G port selection indication information (1) G air domain basis vector indication information or G port selection indication information.
  • the spatial domain basis vector indication information is represented by SD basis (Spatial Domain basis, spatial domain basis vector).
  • the spatial domain basis vector indication information is used to indicate the L g spatial domain basis vectors selected by the terminal.
  • L g represents the number of spatial domain basis vectors corresponding to the g ⁇ 1,...,G ⁇ th CSI-RS resource group. Among them, L g represents the number and value of the air domain basis vector corresponding to each CSI-RS resource in the g-th CSI-RS resource group.
  • the port selection indication information is used to indicate L g CSI-RS ports selected by the terminal.
  • L g represents the number of CSI-RS ports corresponding to the g ⁇ 1,...,G ⁇ -th first group. Among them, L g represents the number and value of CSI-RS ports corresponding to each port group in the g-th first group.
  • the channel state information sent by the terminal to the network device indicates G air domain basis vector indication information or G port selection indication information.
  • the G air domain basis vector indication information or G port selection indication information is actually related to the G CSI-RS
  • the corresponding number of resource groups can also be understood as a one-to-one correspondence between air domain basis vector indication information or port selection indication information and CSI-RS resource groups.
  • each CSI-RS resource group includes at least one CSI-RS resource, and each CSI-RS resource corresponds to a TRP. That is to say, the terminal reports the airspace base corresponding to the CSI-RS resource in each CSI-RS resource group.
  • Vector or port selection indication information is to indicate whether the terminal is to the network device.
  • the spatial basis vector is W 1,g , W 1,g represents a matrix composed of one or more air domain basis vectors corresponding to the g-th CSI-RS resource group, N g represents the number of CSI-RS resources or the number of port groups in the g-th group, N t represents the number of transmit antenna ports, L g represents the number of air domain basis vectors or CSI-RS ports selected in the g-th group, Represents a complex matrix with dimensions N g N t ⁇ 2L g .
  • the embodiment of this application includes four CSI-RS resources, and CSI-RS resource 1 and CSI-RS resource 2 are the first CSI-RS resource group, and CSI-RS resource 3 and CSI-RS resource 4 are the first CSI-RS resource group.
  • 2CSI-RS resource group, and CSI-RS resource 1, CSI-RS resource 2, CSI-RS resource 3 and CSI-RS resource 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first CSI -RS resource group
  • TRP3 and TRP4 are the second CSI-RS resource group
  • the embodiment of the present application takes the grouping of CSI-RS resources to obtain G CSI-RS resource groups as an example for explanation.
  • multiple port groups of one CSI-RS resource can also be grouped to obtain G first groups.
  • the channel state information sent by the terminal to the network device indicates G air domain basis vector indication information or G port selection indication information.
  • the G air domain basis vector indication information or G port selection indication information is actually related to the G first packets.
  • the corresponding number can also be understood as a one-to-one correspondence between the spatial domain basis vector indication information or the port selection indication information and the first packet.
  • each first group includes at least one port group, and each port group corresponds to one TRP. That is to say, the terminal reports the air domain base vector or port selection indication information corresponding to the port group in each first group.
  • the spatial basis vector is W 1,g , W 1,g represents the matrix composed of air domain basis vectors corresponding to the g-th first group, N g represents the number of CSI-RS resources or the number of port groups in the g-th group, and N t represents the number of transmit antenna ports , L g represents the number of airspace basis vectors or CSI-RS ports selected by the g-th group, Represents a complex matrix with dimensions N g N t ⁇ 2L g .
  • the embodiment of the present application includes four port groups, and port group 1 and port group 2 are the first first group, port group 3 and port group 4 are the second first group, and port group 1 and port group Group 2, port group 3 and port group 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first group
  • TRP3 and TRP4 are the second group
  • the channel state information sent by the terminal to the network device indicates G combination coefficient indication information.
  • the G combination coefficient indication information actually corresponds to the number of G CSI-RS resource groups. It can also be understood that It is a one-to-one correspondence between the combination coefficient indication information and the CSI-RS resource group.
  • each CSI-RS resource group includes at least one CSI-RS resource, and each CSI-RS resource corresponds to a TRP. That is to say, the terminal reports the combination coefficient corresponding to the CSI-RS resource in each CSI-RS resource group. Instructions.
  • the combination coefficient indication information is Represents the combined coefficient matrix.
  • N g represents the number of CSI-RS resources in the g-th group
  • L g represents the number of CSI-RS ports selected in the g-th group
  • M g represents the number of frequency domain basis vectors selected in the g-th group
  • the embodiment of this application includes four CSI-RS resources, and CSI-RS resource 1 and CSI-RS resource 2 are the first CSI-RS resource group, and CSI-RS resource 3 and CSI-RS resource 4 are the first CSI-RS resource group.
  • 2CSI-RS resource group, and CSI-RS resource 1, CSI-RS resource 2, CSI-RS resource 3 and CSI-RS resource 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first CSI -RS resource group
  • TRP3 and TRP4 are the second CSI-RS resource group
  • the embodiment of the present application takes the grouping of CSI-RS resources to obtain G CSI-RS resource groups as an example for explanation.
  • multiple port groups of one CSI-RS resource can also be grouped to obtain G first groups.
  • the channel state information sent by the terminal to the network device indicates G combination coefficient indication information.
  • the G combination coefficient indication information actually corresponds to the number of G first packets, and can also be understood as combination
  • the coefficient indication information corresponds to the first packet one-to-one.
  • each first group includes at least one port group, and each port group corresponds to one TRP. That is to say, the terminal reports the combination coefficient indication information corresponding to the port group in each first group.
  • the combination coefficient indication information is Represents the combined coefficient matrix.
  • N g represents the number of port groups in the g-th group
  • L g represents the number of CSI-RS ports selected in the g-th group
  • M g represents the number of frequency domain basis vectors selected in the g-th group
  • the embodiment of the present application includes four port groups, and port group 1 and port group 2 are the first first group, port group 3 and port group 4 are the second first group, and port group 1 and port group Group 2, port group 3 and port group 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first group
  • TRP3 and TRP4 are the second group
  • the channel state information sent by the terminal to the network device indicates G frequency domain basis vectors.
  • the G frequency domain basis vector indication information actually corresponds to the number of G CSI-RS resource groups. It may also be It is understood that the frequency domain basis vector indication information corresponds to the CSI-RS resource group one-to-one.
  • each CSI-RS resource group includes at least one CSI-RS resource, and each CSI-RS resource corresponds to a TRP. That is to say, the terminal reports the frequency domain corresponding to the CSI-RS resource in each CSI-RS resource group. basis vector.
  • the frequency domain basis vector is Represents the frequency domain basis vector matrix.
  • N represents the number of CSI-RS resources
  • M g represents the number of frequency domain basis vectors selected in the g-th group
  • H is the conjugate transpose
  • the embodiment of this application includes four CSI-RS resources, and CSI-RS resource 1 and CSI-RS resource 2 are the first CSI-RS resource group, and CSI-RS resource 3 and CSI-RS resource 4 are the first CSI-RS resource group.
  • 2CSI-RS resource group, and CSI-RS resource 1, CSI-RS resource 2, CSI-RS resource 3 and CSI-RS resource 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first CSI -RS resource group
  • TRP3 and TRP4 are the second CSI-RS resource group
  • the embodiment of the present application takes the grouping of CSI-RS resources to obtain G CSI-RS resource groups as an example for explanation.
  • multiple port groups of one CSI-RS resource can also be grouped to obtain G first groups.
  • the channel state information sent by the terminal to the network device indicates G frequency domain basis vectors.
  • the G frequency domain basis vector indication information actually corresponds to the number of G first packets, which can also be understood as The frequency domain basis vector indication information corresponds to the first packet one-to-one.
  • each first group includes at least one port group, and each port group corresponds to one TRP. That is to say, the terminal reports the frequency domain basis vector corresponding to the port group in each first group.
  • the frequency domain basis vector is Represents the frequency domain basis vector matrix.
  • H is the conjugate transpose.
  • N g represents the number of CSI-RS resources or the number of port groups in the g-th group
  • H is the conjugate transpose
  • N 3 represents the number of PMI subbands
  • M g represents the frequency domain base selected in the g-th group.
  • the number of vectors Represents a complex matrix with dimensions N 3 ⁇ M g .
  • the embodiment of the present application includes four port groups, and port group 1 and port group 2 are the first first group, port group 3 and port group 4 are the second first group, and port group 1 and port group Group 2, port group 3 and port group 4 correspond to TRP1, TRP2, TRP3 and TRP4 respectively.
  • TRP1 and TRP2 are the first group
  • TRP3 and TRP4 are the second group
  • the air domain basis vector indication information, combination coefficient indication information and frequency domain basis vector indication information indicated by the channel state information correspond to the CSI-RS resource group at the same time, or to the port group at the same time. Corresponding to the first group.
  • the embodiment of the present application takes the terminal sending information specifically indicating the channel state information to the network device as an example for explanation.
  • the network device needs to first configure codebook parameter information for the terminal, and then the terminal sends channel state information to the network device based on the codebook parameter information.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each CSI-RS resource, the number of frequency domain basis vectors corresponding to the CSI-RS resource, the number of PMI subbands or the number of transmission At least one of the antenna port numbers.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each port group, the number of frequency domain basis vectors corresponding to the port group, the number of PMI subbands, or the number of transmitting antenna ports. at least one of.
  • the terminal determines the parameters indicated by the channel state information based on the configured codebook parameter information, and then sends the channel state information to the network device.
  • W represents the codebook structure
  • W 1,g represents the spatial domain basis vector corresponding to the CSI-RS resource in the g-th group or a matrix composed of unit basis vectors used for port selection
  • N g represents the matrix in the g-th group.
  • the number of CSI-RS resources N t represents the number of transmit antenna ports
  • W f,g represents the matrix composed of M g frequency domain basis vectors corresponding to the CSI-RS resources in the g-th group
  • M g represents the Select the number of frequency domain basis vectors
  • L g represents the number of air domain basis vectors or CSI-RS ports selected in the g-th group
  • G represents the CSI associated with the CSI-RS resources.
  • G is a positive integer greater than 1
  • H is the conjugate transpose
  • N 3 represents the number of PMI subbands
  • W represents the codebook structure
  • W 1,g represents the spatial domain basis vector corresponding to the port group in the g-th group or a matrix composed of unit basis vectors used for port selection
  • N g represents the port group in the g-th group.
  • the number of _ number represents a matrix composed of combination coefficients corresponding to the port group in the g-th group
  • L g represents the number of air domain basis vectors or CSI-RS ports selected in the g-th group
  • G represents the group with the first group of the port group
  • G is a positive integer greater than 1
  • H is the conjugate transpose
  • N 3 represents the number of sub-bands of PMI
  • channel status information indicates at least one of the following information:
  • One air domain base vector indication information or one port selection indication information corresponds to multiple CSI-RS resources.
  • the spatial domain basis vector indication information is represented by SD basis (Spatial Domain basis, spatial domain basis vector).
  • the spatial domain basis vector indication information is used to indicate the N*N t spatial domain basis vectors selected by the terminal.
  • the port selection indication information is used to indicate the N*N t CSI-RS ports selected by the terminal, N represents the number of the CSI-RS resources, or the number of the port groups, and N t represents the number of transmitting antenna ports .
  • the channel state information sent by the terminal to the network device indicates an air domain base vector indication information or a port selection indication information.
  • This air domain base vector indication information or port selection indication information actually corresponds to the number of multiple CSI-RS resources.
  • the air domain basis vector indication information or port selection indication information is applicable to multiple CSI-RS resources.
  • each CSI-RS resource corresponds to a TRP, that is to say, this air domain base vector indication information or port selection indication information corresponds to N TRPs, and the terminal reports air domain base vectors or port selection indication information corresponding to N TRPs.
  • the spatial basis vector is W 1 , and the or W 1 represents a matrix composed of L air domain basis vectors corresponding to multiple CSI-RS resources, N represents the number of CSI-RS resources, N t represents the number of transmitting antenna ports, and L represents the air domain basis vector corresponding to the CSI-RS resource or
  • the number of CSI-RS ports, P is the number of CSI-RS ports, Represents a complex matrix with dimensions NN t ⁇ 2L, Represents a complex matrix with dimensions NP ⁇ 2L.
  • an air domain base vector indication information or a port selection indication information takes as an example the correspondence between an air domain base vector indication information or a port selection indication information and a CSI-RS resource.
  • an air domain basis vector indication information or a port selection indication information may also correspond to multiple port groups of a CSI-RS resource.
  • the channel state information indicates an air domain basis vector indication information or a port selection indication information, and the air domain basis vector indication information or port selection indication information corresponds to multiple port groups.
  • the channel state information sent by the terminal to the network device indicates an air domain basis vector indication information or a port selection indication information.
  • This air domain basis vector indication information or port selection indication information actually corresponds to the number of multiple port groups, and also It can be understood that the air domain basis vector indication information or port selection indication information is applicable to multiple port groups.
  • each port group corresponds to a TRP, that is to say, this air domain basis vector indication information or port selection indication information corresponds to N TRPs, and the terminal reports the air domain basis vectors corresponding to N TRPs.
  • the spatial basis vector is W 1 , and the or W 1 represents a matrix composed of L air domain basis vectors corresponding to multiple port groups, N represents the number of port groups, N t represents the number of transmit antenna ports, and L represents the air domain basis vector or CSI-RS port corresponding to the CSI-RS resource.
  • the number of , P is the number of CSI-RS ports, Represents a complex matrix with dimensions NN t ⁇ 2L, Represents a complex matrix with dimensions NP ⁇ 2L.
  • the channel state information sent by the terminal to the network device indicates a combination coefficient indication information.
  • This combination coefficient indication information is actually shared by multiple CSI-RS resources and can also be understood as a combination coefficient indication information.
  • each CSI-RS resource corresponds to a TRP, that is, these N CSI-RS resources correspond to N TRPs, and the terminal reports a combination coefficient indication information shared by multiple TRPs.
  • the combination coefficient indication information is Represents the combined coefficient matrix.
  • N represents the number of CSI-RS resources
  • L represents the number of spatial domain basis vectors or CSI-RS ports corresponding to CSI-RS resources
  • M represents the number of frequency domain basis vectors corresponding to CSI-RS resources.
  • the number of CSI-RS resources is 2, and the number of spatial domain basis vectors corresponding to each CSI-RS resource is 4, and L is 4, the number of frequency domain basis vectors corresponding to at least two CSI-RS resources The number is 4, then M is 4,
  • one combination coefficient indication information may also correspond to multiple port groups of one CSI-RS resource.
  • the channel state information sent by the terminal to the network device indicates a combination coefficient indication information.
  • This combination coefficient indication information is actually shared by multiple port groups. It can also be understood that one combination coefficient indication information corresponds to multiple port groups. port group.
  • each port group corresponds to a TRP, that is, these N port groups correspond to N TRPs, and the terminal reports a combination coefficient indication information shared by multiple TRPs.
  • the combination coefficient indication information is Represents the combined coefficient matrix.
  • N represents the number of port groups
  • L represents the number of air domain basis vectors or CSI-RS ports corresponding to the CSI-RS resource
  • M represents the number of frequency domain basis vectors corresponding to the port group.
  • the frequency domain basis vector indication information is used to indicate the M frequency domain basis vectors selected by the terminal.
  • the channel state information sent by the terminal to the network device indicates a frequency domain basis vector indication information.
  • This frequency domain basis vector indication information is actually shared by multiple CSI-RS resources and can also be understood as a
  • the frequency domain basis vector indication information corresponds to multiple CSI-RS resources.
  • each CSI-RS resource corresponds to a TRP, that is to say, these N CSI-RS resources correspond to N TRPs, and the terminal reports a frequency domain base vector indication information shared by multiple TRPs.
  • the frequency domain basis vector indication information is W f , which represents the frequency domain basis vector matrix
  • N 3 represents the number of PMI subbands
  • M represents the number of frequency domain basis vectors corresponding to CSI-RS resources
  • one air domain basis vector indication information may also correspond to multiple port groups of one CSI-RS resource.
  • the channel state information sent by the terminal to the network device indicates a frequency domain basis vector indication information.
  • This frequency domain basis vector indication information is actually shared by multiple port groups and can also be understood as a frequency domain basis vector indication information.
  • the base vector indication information corresponds to multiple port groups.
  • each port group corresponds to a TRP, that is to say, these N port groups correspond to N TRPs, and the terminal reports a frequency domain base vector indication information shared by multiple TRPs.
  • the frequency domain basis vector indication information is W f , which represents the frequency domain basis vector matrix
  • N 3 represents the number of PMI subbands
  • M represents the number of frequency domain basis vectors corresponding to the port group
  • the embodiment of the present application takes the terminal sending information specifically indicating the channel state information to the network device as an example for explanation.
  • the network device needs to first configure codebook parameter information for the terminal, and then the terminal sends channel state information to the network device based on the codebook parameter information.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each CSI-RS resource, the number of frequency domain basis vectors corresponding to the CSI-RS resource, the number of PMI subbands or the number of transmission At least one of the antenna port numbers.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each port group, the number of frequency domain basis vectors corresponding to the port group, the number of PMI subbands, or the number of transmitting antenna ports. at least one of.
  • the terminal determines the parameters indicated by the channel state information based on the configured codebook parameter information, and then sends the channel state information to the network device.
  • W represents the codebook structure
  • N represents the number of CSI-RS resources
  • N t represents the number of transmit antenna ports
  • P represents the number of CSI-RS ports
  • L represents the air domain basis vector or CSI-RS port corresponding to the CSI-RS resource.
  • the number of M represents the number of frequency domain basis vectors corresponding to the CSI-RS resource
  • N 3 represents the number of PMI subbands indicated by the precoding matrix.
  • W 1 represents the matrix of L spatial domain basis vectors or unit basis vectors used for port selection of the CSI-RS resource, represents a matrix composed of combination coefficient indication information
  • W f represents a matrix composed of M frequency domain basis vectors
  • H is the conjugate transpose
  • the combination coefficient indication information includes multiple types of information.
  • the combined coefficient indication information includes non-zero coefficient information and non-zero coefficient position information, the non-zero coefficient information indicates the non-zero coefficient in the combined coefficient indication information, and the non-zero coefficient position information indicates that the non-zero coefficient is in the combined coefficient indication information. s position.
  • the network device receives channel state information sent by the terminal including air domain basis vector indication information or port selection indication information, combination coefficient indication information and frequency domain basis vector indication information.
  • the air domain basis vector indication information or port selection indication information, combination coefficient indication information and frequency domain basis vector indication information are determined by the terminal based on the channel information or effective channel information corresponding to each CSI-RS resource and the codebook parameter information.
  • the embodiment of the present application takes the terminal sending information specifically indicating the channel state information to the network device as an example for explanation.
  • the network device needs to first configure codebook parameter information for the terminal, and then the terminal sends channel state information to the network device based on the codebook parameter information.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each CSI-RS resource, the number of frequency domain basis vectors corresponding to the CSI-RS resource, the number of PMI subbands or the number of transmission At least one of the antenna port numbers.
  • the codebook parameter information configured by the network device for the terminal includes the number of air domain basis vectors corresponding to each port group, the number of frequency domain basis vectors corresponding to the port group, the number of PMI subbands, or the number of transmitting antenna ports. at least one of.
  • the terminal determines the parameters indicated by the channel state information based on the configured codebook parameter information, and then sends the channel state information to the network device.
  • the parameters indicated by the channel state information include a variety of situations, which expands the way of indicating parameters, thereby increasing the diversity of indicated parameters.
  • the network device configures codebook parameters for the terminal through configuration information.
  • the network device sends configuration information to the terminal.
  • the configuration information is used to configure the codebook parameter information.
  • the codebook parameter information is used to For terminals to determine channel status information.
  • the network device sends configuration information to the terminal, and uses the configuration information to configure codebook parameter information for the terminal. Subsequently, the terminal can send channel state information to the network device based on the codebook parameter information.
  • the network device before sending configuration information to the terminal, the network device also determines the codebook structure, so that the terminal is configured with codebook parameter information that matches the codebook structure based on the codebook structure.
  • the terminal determines the codebook structure, and then indicates the determined codebook structure to the network device through indication information.
  • the terminal sends first indication information to the network device, and the first indication information indicates the adopted codebook structure.
  • the network device determines the codebook structure, and then the network device indicates the codebook structure to the terminal through indication information.
  • the terminal receives second indication information sent by the network device, and the second indication information indicates the adopted codebook structure.
  • the embodiment of the present application takes the instruction information indication codebook structure as an example for explanation.
  • the codebook structure between the network device and the terminal is agreed upon by a protocol, and the network device can directly configure the codebook parameter information corresponding to the agreed codebook structure for the terminal.
  • the network device determines the codebook structure, it then configures the codebook parameter information for the terminal according to the codebook structure, which improves the accuracy of the network device configuring the codebook parameter information.
  • Figure 8 shows a block diagram of a codebook-based precoding determination device provided by an exemplary embodiment of the present application.
  • the device includes:
  • Determining module 801 configured to determine channel information corresponding to each CSI-RS resource based on at least one CSI-RS resource;
  • the sending module 802 is configured to send channel state information to the network device according to the determined channel information corresponding to each CSI-RS resource and the codebook parameter information.
  • the channel state information includes indication information corresponding to multiple CSI-RS resources and each The indication information corresponding to the CSI-RS resource, or the channel state information includes indication information corresponding to multiple port groups in one CSI-RS resource and indication information corresponding to each port group.
  • the port group includes multiple CSI-RS resources corresponding to CSI-RS port;
  • the channel state information is used to determine the precoding of the terminal based on the codebook structure corresponding to the codebook parameter information.
  • the channel state information includes at least one of the following information:
  • N airspace basis vector indication information or N port selection indication information and N is the same as the number of CSI-RS resources, or the same as the number of port groups, and N is a positive integer greater than 1;
  • a combination coefficient indication information corresponds to multiple CSI-RS resources, or corresponds to multiple port groups in one CSI-RS resource;
  • One frequency domain basis vector indication information corresponds to multiple CSI-RS resources or multiple port groups in one CSI-RS resource.
  • the channel state information includes at least one of the following information:
  • G airspace basis vector indication information or G port selection indication information
  • G and the number of CSI-RS resource groups of multiple CSI-RS resources are the same, and the CSI-RS resource group includes at least one CSI-RS resource, or G and multiple port groups in one CSI-RS resource.
  • the number of groups in the first group is the same, the first group includes at least one port group, and G is a positive integer greater than 1.
  • the channel state information includes at least one of the following information:
  • An air domain base vector indication information or a port selection indication information corresponds to multiple CSI-RS resources, or corresponds to multiple port groups in one CSI-RS resource;
  • a combination coefficient indication information corresponds to multiple CSI-RS resources, or corresponds to multiple port groups in one CSI-RS resource;
  • the frequency domain basis vector indication information corresponds to multiple CSI-RS resources, or corresponds to multiple port groups in a CSI-RS resource.
  • the combined coefficient indication information includes non-zero coefficient information and non-zero coefficient position information, the non-zero coefficient information indicates the non-zero coefficient in the combined coefficient indication information, and the non-zero coefficient position information indicates the non-zero coefficient in the combined coefficient indication location in the message.
  • the determination module 801 is used to determine the air domain basis vector indication information, the combination coefficient indication information and the frequency domain basis vector indication according to the channel information or effective channel information corresponding to each CSI-RS resource and the codebook parameter information. information;
  • the sending module is also configured to send channel state information including air domain basis vector indication information or the port selection indication information, combination coefficient indication information and frequency domain basis vector indication information to the network device.
  • the device further includes:
  • the receiving module 803 is used to receive configuration information sent by the network device.
  • the configuration information is used to configure codebook parameter information, and the codebook parameter information is used for the terminal to determine channel state information.
  • the sending module 802 is also used to:
  • the CSI-RS resources are CMR resources.
  • different CMR resources belong to the same CSI-RS resource set, or different CMR resources belong to different CSI-RS resource sets.
  • each CSI-RS resource in the plurality of CSI-RS resources corresponds to a transmission and reception node TRP, and at least two TRPs are used for coherent transmission CJT;
  • Each port group in multiple port groups in a CSI-RS resource corresponds to a TRP, and at least two TRPs are used for CJT.
  • Figure 10 shows a block diagram of a codebook-based precoding determination device provided by an exemplary embodiment of the present application.
  • the device includes:
  • the receiving module 1001 is configured to receive channel state information sent by the terminal.
  • the channel state information includes indication information corresponding to multiple CSI-RS resources and indication information corresponding to each CSI-RS resource.
  • the channel state information includes one CSI-RS Instruction information corresponding to multiple port groups in the resource and indication information corresponding to each port group.
  • the port group includes multiple CSI-RS ports corresponding to the CSI-RS resource.
  • the channel state information is generated by the terminal based on each of at least one CSI-RS resource.
  • the channel information and codebook parameter information corresponding to each CSI-RS resource are determined;
  • the determination module 1002 is used to determine the precoding of the terminal according to the channel state information and the codebook structure corresponding to the codebook parameter information.
  • the channel state information includes at least one of the following information:
  • N airspace basis vector indication information or N port selection indication information and N is the same as the number of CSI-RS resources, or the same as the number of port groups, and N is a positive integer greater than 1;
  • a combination coefficient indication information corresponds to multiple CSI-RS resources, or corresponds to multiple port groups in one CSI-RS resource;
  • One frequency domain basis vector indication information corresponds to multiple CSI-RS resources or multiple port groups in one CSI-RS resource.
  • the codebook structure is represented by the following formula:
  • W represents the codebook structure
  • N represents the number of CSI-RS resources or the number of port groups
  • N t represents the number of transmit antenna ports
  • P represents the number of CSI-RS ports
  • Li represents the i ⁇ ⁇ 1,... , the air domain basis vector indication information or the number of CSI-RS ports corresponding to N ⁇ CSI-RS resources, or the air domain basis vector indication information or CSI-RS ports corresponding to the i ⁇ 1,...,N ⁇ th port group
  • the number of M represents the number of frequency domain basis vectors corresponding to the i-th CSI-RS resource, or the number of frequency domain basis vectors corresponding to the i-th port group
  • N 3 represents the precoding matrix indicating the PMI subband. number.
  • W 1,i represents a matrix composed of Li spatial domain basis vectors or unit basis vectors used for port selection corresponding to the i -th CSI-RS resource, or a matrix composed of Li spatial domain basis vectors corresponding to the i - th port group or a matrix of unit basis vectors for port selection, represents a matrix composed of combination coefficient indication information
  • W f represents a matrix composed of M frequency domain basis vectors
  • H is the conjugate transpose
  • the channel state information includes at least one of the following information:
  • G airspace basis vector indication information or G port selection indication information
  • G and the number of CSI-RS resource groups of multiple CSI-RS resources are the same, and the CSI-RS resource group includes at least one CSI-RS resource, or G and multiple port groups in one CSI-RS resource.
  • the number of groups in the first group is the same, the first group includes at least one port group, and G is a positive integer greater than 1.
  • the codebook structure is expressed by the following formula:
  • W represents the codebook structure
  • W 1,g represents the spatial domain basis vector corresponding to the CSI-RS resource in the g ⁇ 1,...,G ⁇ -th group or a matrix composed of unit basis vectors used for port selection
  • N g represents the CSI-RS resource in the g-th group number or port group
  • N t represents the number of transmit antenna ports
  • W f,g represents the matrix composed of M g frequency domain basis vectors corresponding to the CSI-RS resources in the g-th group, or represents the g-th group
  • M g represents the number of frequency domain basis vectors selected in the gth group
  • the channel state information includes at least one of the following information:
  • An air domain basis vector indication information which corresponds to multiple CSI-RS resources or multiple port groups in one CSI-RS resource;
  • a combination coefficient indication information corresponds to multiple CSI-RS resources, or corresponds to multiple port groups in one CSI-RS resource;
  • One frequency domain basis vector indication information corresponds to multiple CSI-RS resources or multiple port groups in one CSI-RS resource.
  • the codebook structure is represented by the following formula:
  • W represents the codebook structure
  • N represents the number of CSI-RS resources, or the number of port groups
  • N t represents the number of transmit antenna ports
  • P represents the number of CSI-RS ports
  • L represents the number of CSI-RS resources corresponding to The air domain basis vector indication information or the number of CSI-RS ports, or the air domain basis vector indication information corresponding to the port group or the number of CSI-RS ports
  • M represents the number of frequency domain basis vectors corresponding to the CSI-RS resource
  • Or represents the number of frequency domain basis vectors corresponding to the port group
  • N 3 represents the number of PMI subbands indicated by the precoding matrix.
  • W 1 represents a matrix composed of L spatial domain basis vectors of CSI-RS resources or unit basis vectors used for port selection, or represents a matrix composed of L spatial domain basis vectors or unit basis vectors used for port selection of a port group, represents a matrix composed of combination coefficient indication information
  • W f represents a matrix composed of M frequency domain basis vectors
  • H is the conjugate transpose
  • the combined coefficient indication information includes non-zero coefficient information and non-zero coefficient position information, the non-zero coefficient information indicates the non-zero coefficient in the combined coefficient indication information, and the non-zero coefficient position information indicates the non-zero coefficient in the combined coefficient indication location in the message.
  • the receiving module 1001 is also configured to receive channel state information including air domain basis vector indication information, combination coefficient indication information and frequency domain basis vector indication information sent by the terminal;
  • the air domain basis vector indication information or the port selection indication information, combination coefficient indication information and frequency domain basis vector indication information are determined by the terminal according to the channel information or effective channel information corresponding to each CSI-RS resource and the codebook parameter information.
  • the device further includes:
  • the sending module 1003 is used to send configuration information to the terminal.
  • the configuration information is used to configure codebook parameter information, and the codebook parameter information is used for the terminal to determine channel state information.
  • the receiving module 1001 is also used to:
  • second indication information is sent to the terminal, and the second indication information indicates the adopted codebook structure.
  • the CSI-RS resources are CMR resources.
  • different CMR resources belong to the same CSI-RS resource set, or different CMR resources belong to different CSI-RS resource sets.
  • each CSI-RS resource among the plurality of CSI-RS resources corresponds to one TRP, and at least two TRPs are used for CJT;
  • Each port group in multiple port groups in a CSI-RS resource corresponds to a TRP, and at least two TRPs are used for CJT.
  • Figure 12 shows a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.
  • the communication device includes: a processor 1201, a receiver 1202, a transmitter 1203, a memory 1204 and a bus 1205.
  • the processor 1201 includes one or more processing cores.
  • the processor 1201 executes various functional applications and information processing by running software programs and modules.
  • the receiver 1202 and the transmitter 1203 can be implemented as a communication component, and the communication component can be a communication chip.
  • Memory 1204 is connected to processor 1201 through bus 1205.
  • the memory 1204 can be used to store at least one program code, and the processor 1201 is used to execute the at least one program code to implement each step in the above method embodiment.
  • Memory 1204 may be implemented by any type of volatile or non-volatile storage device, or combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Static Read-Only Memory (SRAM), Read-Only Memory (ROM), Magnetic Memory, Flash Memory, Programmable Read-Only Memory (PROM).
  • EEPROM electrically erasable programmable read-only Memory
  • EPROM Erasable Programmable Read-Only Memory
  • SRAM Static Read-Only Memory
  • ROM Read-Only Memory
  • Magnetic Memory Flash Memory
  • PROM Programmable Read-Only Memory
  • a computer-readable storage medium is also provided, with executable program code stored in the readable storage medium, and the executable program code is loaded and executed by the processor to implement each of the above methods.
  • a codebook-based precoding determination method performed by a communication device is provided in the example.
  • a chip is provided.
  • the chip includes programmable logic circuits and/or program instructions. When the chip is run on a terminal or network device, it is used to implement as provided by various method embodiments. Codebook-based precoding determination method.
  • a computer program product is provided.
  • the computer program product is executed by a processor of a terminal or a network device, it is used to implement the codebook-based precoding determination method provided by each of the above method embodiments.

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Abstract

一种基于码本的预编码确定方法、装置、设备及存储介质，涉及移动通信领域。方法包括：终端根据确定的每个CSI-RS资源对应的信道信息以及码本参数信息，向网络设备发送信道状态信息，信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，指示一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，且信道状态信息用于基于码本参数信息对应的码本结构确定终端的预编码。

Description

基于码本的预编码确定方法、装置、设备及存储介质 技术领域
本申请涉及移动通信领域，特别涉及一种基于码本的预编码确定方法、装置、设备及存储介质。
背景技术
在移动通信系统中，网络设备与终端之间可以进行通信，而终端可以向网络设备反馈CSI(Channel Status Information，信道状态信息)，进而由网络设备根据接收的CSI以及相应的码本结构确定终端的预编码。但是，当多个网络设备如多个TRP(Transmission Reception Point,传输接收节点)的联合为一个终端服务时，需要确定多个TRP给该终端传输数据所采用的预编码，网络设备如何基于码本确定多个TRP协作的预编码成为亟需解决的问题。
发明内容
本申请实施例提供了一种基于码本的预编码确定方法、装置、设备及存储介质，本申请联合利用了多个TRP信道信息，提出了一种信道状态信息上报方法，不仅减少了反馈开销，还提高了确定的终端预编码精度。所述技术方案如下：
根据本申请的一个方面，提供了一种基于码本的预编码确定方法，所述方法由终端执行，所述方法包括：
基于至少一个CSI-RS(Channel Status Information-Reference Signal，信道状态信息参考信号)资源，确定每个CSI-RS资源对应的信道信息；
根据确定的所述每个CSI-RS资源对应的信道信息以及码本参数信息，向网络设备发送信道状态信息，所述信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，所述信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，所述端口组包括所述CSI-RS资源对应的多个CSI-RS端口；
所述信道状态信息用于基于所述码本参数信息对应的码本结构确定所述终端的预编码。
根据本申请的一个方面，提供了一种基于码本的预编码确定方法，所述方法由网络设备执行，所述方法包括：
接收终端发送的信道状态信息，所述信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，所述信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，所述端口组包括所述CSI-RS资源对应的多个CSI-RS端口，所述信道状态信息由所述终端基于至少一个CSI-RS资源中每个CSI-RS资源对应的信道信息以及码本参数信息确定；
根据所述信道状态信息以及所述码本参数信息对应的码本结构，确定所述 终端的预编码。
根据本申请的一个方面，提供了一种基于码本的预编码确定装置，所述装置包括：
确定模块，用于基于至少一个CSI-RS资源，确定每个CSI-RS资源对应的信道信息；
发送模块，用于根据确定的所述每个CSI-RS资源对应的信道信息以及码本参数信息，向网络设备发送信道状态信息，所述信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，所述信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，所述端口组包括所述CSI-RS资源对应的多个CSI-RS端口；
所述信道状态信息用于基于所述码本参数信息对应的码本结构确定所述终端的预编码。
根据本申请的一个方面，提供了一种基于码本的预编码确定装置，所述装置包括：
接收模块，用于接收终端发送的信道状态信息，所述信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，所述信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，所述端口组包括所述CSI-RS资源对应的多个CSI-RS端口，所述信道状态信息由所述终端基于至少一个CSI-RS资源中每个CSI-RS资源对应的信道信息以及码本参数信息确定；
确定模块，用于根据所述信道状态信息以及所述码本参数信息对应的码本结构，确定所述终端的预编码。
根据本申请的一个方面，提供了一种终端，终端包括：处理器；与处理器相连的收发器；用于存储处理器的可执行指令的存储器；其中，处理器被配置为加载并执行可执行指令以实现如上述方面的基于码本的预编码确定方法。
根据本申请的一个方面，提供了一种网络设备，网络设备包括：处理器；与处理器相连的收发器；用于存储处理器的可执行指令的存储器；其中，处理器被配置为加载并执行可执行指令以实现如上述方面的基于码本的预编码确定方法。
根据本申请的一个方面，提供了一种计算机可读存储介质，可读存储介质中存储有可执行程序代码，可执行程序代码由处理器加载并执行以实现如上述方面的基于码本的预编码确定方法。
根据本申请的一个方面，提供了一种芯片，芯片包括可编程逻辑电路和/或程序指令，当芯片在终端上运行时，用于实现如上述方面的基于码本的预编码确定方法。
根据本申请的一个方面，提供了一种计算机程序产品，当计算机程序产品被终端的处理器执行时，其用于实现上述方面的基于码本的预编码确定方法。
本申请实施例提供的基于码本的预编码确定方案中，终端测量每个CSI-RS资源对应的CSI-RS后，向网络设备上报的指示信息用于指示多个CSI-RS资源对应的码本参数信息以及每个CSI-RS资源对应的码本参数信息，或者，指示一个CSI-RS资源中多个端口组对应的码本参数信息以及每个端口组对应的码本参 数信息，并且多个CSI-RS资源或多个端口组可以理解为对应多个TRP，也就是本申请确定了多个TRP共用的参数以及每个TRP单独的参数，因此网络设备可以根据终端上报的参数确定终端的预编码，本申请联合利用了多个TRP信道信息，提出了一种信道状态信息上报方法，不仅减少了反馈开销，还提高了确定的终端预编码精度。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1示出了本申请一个示例性实施例提供的通信系统的框图；
图2示出了本申请一个示例性实施例提供的另一种通信系统的框图；
图3示出了本申请一个示例性实施例提供的基于码本的预编码确定方法的流程图；
图4示出了本申请一个示例性实施例提供的基于码本的预编码确定方法的流程图；
图5示出了本申请一个示例性实施例提供的基于码本的预编码确定方法的流程图；
图6示出了本申请一个示例性实施例提供的基于码本的预编码确定方法的流程图；
图7示出了本申请一个示例性实施例提供的基于码本的预编码确定方法的流程图；
图8示出了本申请一个示例性实施例提供的一种基于码本的预编码确定装置的框图；
图9示出了本申请一个示例性实施例提供的另一种基于码本的预编码确定装置的框图；
图10示出了本申请一个示例性实施例提供的一种基于码本的预编码确定装置的框图；
图11示出了本申请一个示例性实施例提供的另一种基于码本的预编码确定装置的框图；
图12示出了本申请一个示例性实施例提供的通信设备的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本申请的一些方面相一致的装 置和方法的例子。
在本申请使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请和所附权利要求书中所使用的单数形式的“一种”、“”和“该”也是旨在包括多数形式，除非上下文清楚地表示其它含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本申请可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本申请范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，例如，在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
需要说明的是，本申请所涉及的信息(包括但不限于用户设备信息、用户个人信息等)、数据(包括但不限于用于分析的数据、存储的数据、展示的数据等)以及信号，均为经用户授权或者经过各方充分授权的，且相关数据的收集、使用和处理需要遵守相关国家和地区的相关法律法规和标准。
下面，对本申请的应用场景进行说明：
图1示出了本申请一个示例性实施例提供的通信系统的框图，该通信系统可以包括：终端10和网络设备20。
终端10的数量通常为多个，每一个网络设备20所管理的小区内可以分布一个或多个终端10。终端10可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备，以及各种形式的用户设备(User Equipment，UE)、移动台(Mobile Station，MS)等等。为方便描述，本申请实施例中，上面提到的设备统称为终端。
网络设备20是一种部署在接入网中用以为终端10提供无线通信功能的装置。为方便描述，本申请实施例中，上述为终端10提供无线通信功能的装置统称为网络设备。网络设备20与终端10之间可以通过空口建立连接，从而通过该连接进行通信，包括信令和数据的交互。网络设备20的数量可以有多个，两个邻近的网络设备20之间也可以通过有线或者无线的方式进行通信。终端10可以在不同的网络设备20之间进行切换，也即与不同的网络设备20建立连接。
该网络设备20可以包括各种形式的宏基站，微基站，中继站，接入点，发送接收点(Transmission Reception Point，TRP)等等。在采用不同的无线接入技术的系统中，具备网络设备功能的设备的名称可能会有所不同，例如在5G NR(New Radio，新的无线技术)系统中，称为gNodeB或者gNB。随着通信技术的演进，“网络设备”这一名称可能会变化。
在一些实施例中，一个网络设备可以包含一个或多个TRP，或者，一个网络设备包括一个或多个天线面板。
若网络设备包括多个TRP，则网络设备可以通过多个TRP中的每个TRP与终端进行通信。也就是说，网络设备与多个TRP中的每个TRP建立传输通道，进而基于已建立的传输通道与终端进行通信。
若网络设备包括多个天线面板，则网络设备可以通过多个天线面板中的每个天线面板与终端进行通信。也就是说，网络设备与多个天线面板中的每个天线 面板建立传输通道，进而基于已建立的传输通道与终端进行通信。
例如，如图2所示，一个网络设备配置4个TRP，分别为TRP1、TRP2、TRP3和TRP4，网络设备通过这4个TRP与终端建立通信连接，进而则网络设备可以通过4个TRP与终端进行通信。
在一些实施例中，网络设备包含的多个TRP可以采用CJT技术进行协作，进而完成网络设备与终端之间的数据传输。其中，该CJT技术是指每个数据流会通过加权向量映射到参与协作的TRP上。
图3示出了本申请一个示例性实施例提供的基于码本的预编码确定方法的流程图，示例性的可以应用于如图1所示的终端和网络设备中，该方法包括以下内容中的至少部分内容：
步骤301：终端基于至少一个CSI-RS资源，确定每个CSI-RS资源对应的信道信息。
其中，CSI-RS资源用于传输CSI-RS。另外，该CSI-RS资源由网络设备配置，进而网络设备可以通过配置的CSI-RS资源向终端发送CSI-RS。
在本申请实施例中，终端基于至少一个CSI-RS资源，对CSI-RS进行测量，以获取测量得到的每个CSI-RS资源对应的信道信息。
在一些实施例中，CSI-RS资源为CMR(Channel Measurement Resource,信道测量资源)资源，也就是说，本申请实施例中的CSI-RS资源即为CMR资源。
可选地，不同的CMR资源属于相同的CSI-RS资源集，或者，不同的CMR资源属于不同的CSI-RS资源集。
在一些实施例中，至少一个CSI-RS资源中的每个CSI-RS资源对应一个TRP，至少两个TRP用于CJT(Coherent Joint Transmission,相干传输)。
在另一些实施例中，一个CSI-RS资源中多个端口组中的每个端口组对应一个TRP，至少两个TRP用于CJT。
其中，一个CSI-RS资源对应多个CSI-RS端口，对多个CSI-RS端口进行分组，得到多个端口组，并且每个端口组中包括至少一个CSI-RS端口，而且每个端口组对应一个TRP。
步骤302：终端根据确定的每个CSI-RS资源对应的信道信息以及码本参数信息，向网络设备发送信道状态信息，信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，端口组包括CSI-RS资源对应的多个CSI-RS端口，信道状态信息用于基于码本参数信息对应的码本结构确定终端的预编码。
其中，码本参数信息用于供终端上报指示信息，以便于网络设备确定终端的预编码。另外，该码本参数信息对应码本结构，也就是说明可以根据该码本参数信息对应码本结构以及信道状态信息确定终端的预编码。另外，本申请实施例中的信道状态信息用于基于码本参数信息对应的码本结构确定终端的预编码，而信道状态信息包括指示信息，也就是说信道状态信息包括的指示信息用于基于码本参数信息对应的码本结构确定终端的预编码。
其中，该信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息。多个CSI-RS资源对应的指示信息是指：信道状态信息包括的用于确定终端的预编码的指示信息可以应用于每个CSI-RS资源，也就是发送一个指示信息即可适用于每个CSI-RS资源。而每个CSI-RS资源对应的指示信息是指：信道状态信息包括的用于终端的预编码的参数应用于一个CSI-RS资源，也就是每个CSI-RS资源对应的指示信息适用于对应的CSI-RS资源，其他CSI-RS资源不适用。
又或者，该信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，该端口组包括CSI-RS资源对应的多个CSI-RS端口。其中，多个端口组对应的指示信息是指：信道状态信息包括的用于确定终端的预编码的指示信息可以应用于每个端口组，也就是发送一个指示信息即可适用于每个端口组。而每个端口组对应的指示信息是指：信道状态信息包括的用于终端的预编码的指示信息应用于一个端口组，也就是每个端口组对应的参数适用于对应的端口组，其他端口组不适用。
在本申请实施例中，终端确定至少一个CSI-RS资源中每个CSI-RS资源对应的信道信息后，根据已获取的信道信息以及码本参数信息，确定终端需要上报给网络设备的指示信息，终端再向网络设备发送包括指示信息的信道状态信息，通过该信道状态信息用于确定终端的预编码的参数。
其中，若至少一个CSI-RS资源包括多个CSI-RS资源，则终端确定的是每个CSI-RS资源对应的信道信息。而若至少一个CSI-RS资源包括一个CSI-RS资源，并且该CSI-RS资源对应多个CSI-RS端口，则终端确定的是多个端口组中每个端口组对应的信道信息。
在一些实施例中，网络设备通过RRC(Radio Resource Control,无线资源控制)信令为终端配置码本参数信息，或者，网络设备通过其他信令为终端配置码本参数信息。
步骤303：网络设备接收终端发送的信道状态信息，信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，端口组包括CSI-RS资源对应的多个CSI-RS端口，信道状态信息由终端基于至少一个CSI-RS资源中每个CSI-RS资源对应的信道信息以及码本参数信息确定。
步骤304：网络设备根据信道状态信息以及码本参数信息对应的码本结构，确定终端的预编码。
其中，码本参数信息对应有码本结构，码本的结构不同，则网络设备基于码本结构确定终端的预编码的方式不同。
在本申请实施例中，网络设备接收到信道状态信息后，根据该信道状态信息可以确定该信道状态信息包括的多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，信道状态信息指示的一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，再根据确定的信道状态信息以及码本参数信息对应的码本结构，确定终端的预编码。
需要说明的是，网络设备所执行的步骤可以单独形成一个实施例，终端所执行的步骤也可以单独形成一个实施例，本申请对此不作限定。
本申请实施例提供方案中，终端测量每个CSI-RS资源对应的CSI-RS后，向网络设备上报的信道状态信息，包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，指示一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，并且多个CSI-RS资源或多个端口组可以理解为对应多个TRP，也就是本申请确定了多个TRP共用的参数以及每个TRP单独的参数，因此网络设备可以根据终端上报的参数确定终端的预编码，本申请联合利用了多个TRP信道信息，提出了一种信道CSI上报方法，不仅减少了反馈开销，还提高了确定的终端预编码精度。
在图3所示的实施例的基础上，终端发送的信道状态信息包括的多种信息，并且包括的多种信息包括不同的情况。
第一种：信道状态信息包括以下至少一种信息：
(1)N个空域基向量指示信息或N个端口选择指示信息，且N与CSI-RS资源的数量相同，N为大于1的正整数。
其中，该空域基向量指示信息采用SD basis(Spatial Domain basis，空域基向量)表示。该空域基向量指示信息用于指示终端所选择的Li个空域基向量。其中，i属于{1,2…，N}。在一些实施例中，该空域基向量指示信息为空域波束基向量，可以称为波束基向量，也可以称为空域基向量，还可以称为波束。端口选择指示信息用于指示终端所选择的Li个CSI-RS端口。
另外，终端向网络设备发送的信道状态信息包括N个空域基向量指示信息或N个端口选择指示信息，这N个空域基向量指示信息或N个端口选择指示信息实际上是与CSI-RS资源的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息与CSI-RS资源一一对应。另外，每个CSI-RS资源对应一个TRP，也就是说，这N个CSI-RS资源对应N个TRP，终端上报每个TRP对应的空域基向量指示信息或端口选择指示信息。
例如，以空域基向量指示信息进行说明。该空域基向量指示信息指示的空域基向量为W 1,i，该
Figure PCTCN2022089672-appb-000001
或
Figure PCTCN2022089672-appb-000002
W 1,i表示对应第i个CSI-RS资源的由L i个空域基向量组成的矩阵，N表示CSI-RS资源的个数，N t表示发送天线端口数，L i表示第i∈{1,…,N}个CSI-RS资源对应的空域基向量或CSI-RS端口的个数，P为CSI-RS端口数。
Figure PCTCN2022089672-appb-000003
表示维度为X行Y列的复数矩阵，例如X为，Y为2L i，也即是
Figure PCTCN2022089672-appb-000004
下述实施例中与本申请实施例中的
Figure PCTCN2022089672-appb-000005
类似，不再一一举例说明。
可选地，若CSI-RS资源的数量为2，并且每个CSI-RS资源对应的空域基向量的个数为4，L i为4，则
Figure PCTCN2022089672-appb-000006
需要说明的是，本申请实施例是以N个空域基向量指示信息或N个端口选择指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，N个空域基向量指示信息或N个端口选择指示信息还可以与一个CSI-RS资源的多个端口组对应。
其中，该信道状态信息包括N个空域基向量指示信息或N个端口选择指示信息，且N与端口组的数量相同，N为大于1的正整数。
终端向网络设备发送的信道状态信息包括N个空域基向量指示信息或N个端口选择指示信息，这N个空域基向量指示信息或N个端口选择指示信息实际上是与端口组的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息与端口组一一对应。另外，每个端口组对应一个TRP，也就是说，这N个端口组对应N个TRP，终端上报每个TRP对应的空域基向量指示信息或端口选择指示信息。
例如，以空域基向量指示信息进行说明，该空域基向量指示信息指示的空域基向量为W 1,i，该
Figure PCTCN2022089672-appb-000007
或
Figure PCTCN2022089672-appb-000008
W 1,i表示对应第i个端口组的由L i个空域基向量组成的矩阵，N表示至少两个端口组的个数，N t表示发送天线端口数，L i表示第i∈{1,…,N}个端口组对应的空域基向量或CSI-RS端口的个数，P为CSI-RS端口数。
可选地，若端口组的数量为2，并且每个端口组对应的空域基向量的个数为4，L i为4，则
Figure PCTCN2022089672-appb-000009
(2)一个组合系数指示信息，组合系数指示信息对应多个CSI-RS资源。
在本申请实施例中，终端向网络设备发送的信道状态信息包括一个组合系数指示信息，这个组合系数指示信息实际上是由多个CSI-RS资源共用的，也可以理解为一个组合系数指示信息对应多个CSI-RS资源。另外，每个CSI-RS资源对应一个TRP，也就是说，这N个CSI-RS资源对应N个TRP，终端上报多个TRP共用的一个组合系数指示信息。
例如，该组合系数指示信息指示的组合系数矩阵为
Figure PCTCN2022089672-appb-000010
N表示CSI-RS资源的个数，L i表示第i∈{1,…,N}个CSI-RS资源对应的空域基向量指示信息或CSI-RS端口的个数，M表示CSI-RS资源对应的频域基向量的个数。
可选地，若CSI-RS资源的数量为2，并且每个CSI-RS资源对应的空域基向量的个数为4，L i为4，至少两个CSI-RS资源对应的频域基向量个数为4则M为4，
Figure PCTCN2022089672-appb-000011
需要说明的是，本申请实施例是以一个组合系数指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，一个组合系数指示信息还可以与一个CSI-RS资源的多个端口组对应。
其中，该信道状态信息包括一个组合系数指示信息，组合系数指示信息对应多个端口组。
在本申请实施例中，终端向网络设备发送的信道状态信息包括一个组合系数指示信息，这个组合系数指示信息实际上是由多个端口组共用的，也可以理解为一个组合系数指示信息对应多个端口组。另外，每个端口组对应一个TRP，也就是说，这N个端口组对应N个TRP，终端上报多个TRP共用的一个组合系数指示信息。
例如，该组合系数指示信息指示的组合系数矩阵为
Figure PCTCN2022089672-appb-000012
N表示端口组的个数，L i表示第i∈{1,…,N}个端口组对应的空域基向量或CSI-RS端口的个数，M表示端口组对应的频域基向量的个数。
可选地，若端口组的数量为2，并且每个端口组对应的空域基向量的个数为4，L i为4，至少两个端口组对应的频域基向量个数为4则M为4，
Figure PCTCN2022089672-appb-000013
(3)一个频域基向量指示信息，该频域基向量指示信息对应多个CSI-RS资源。
其中，该频域基向量指示信息用于指示终端所选择的M个频域基向量。频域基向量指示信息用于表征信道在频域上的变化规律。频域基向量具体可用于表示各空域基向量的加权系数在各个频域单元上的变化规律。频域基向量所表征的变化规律与多径时延等因素相关。
在本申请实施例中，终端向网络设备发送的信道状态信息包括一个频域基向量指示信息，这个频域基向量指示信息实际上是由多个CSI-RS资源共用的，也可以理解为一个频域基向量指示信息对应多个CSI-RS资源。另外，每个CSI-RS资源对应一个TRP，也就是说，这N个CSI-RS资源对应N个TRP，终端上报多个TRP共用的一个频域基向量指示信息。
例如，该频域基向量指示信息指示的频域基向量为W f，表示频域基向量矩阵，
Figure PCTCN2022089672-appb-000014
N 3表示PMI子带的个数，M表示CSI-RS资源对应的频域基向量的个数。
可选地，若至少两个CSI-RS资源对应的频域基向量个数为4，则M为4，
Figure PCTCN2022089672-appb-000015
需要说明的是，本申请实施例是以一个频域基向量指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，一个频域基向量指示信息还可以与一个CSI-RS资源的多个端口组对应。
其中，该信道状态信息包括一个频域基向量指示信息，频域基向量指示信息对应多个端口组。
在本申请实施例中，终端向网络设备发送的信道状态信息包括一个频域基向量指示信息，这个频域基向量指示信息实际上是由多个端口组共用的，也可以理解为一个频域基向量指示信息对应多个端口组。另外，每个端口组对应一个TRP，也就是说，这N个端口组对应N个TRP，终端上报多个TRP共用的一个频域基向量指示信息。
例如，该频域基向量指示信息指示的频域基向量为W f，表示频域基向量矩阵，
Figure PCTCN2022089672-appb-000016
N 3表示PMI子带的个数，M表示端口组对应的频域基向量的个数。
可选地，若至少两个端口组对应的频域基向量个数为4，则M为4，
Figure PCTCN2022089672-appb-000017
Figure PCTCN2022089672-appb-000018
需要说明的是，本申请实施例中信道状态信息指示的空域基向量指示信息、组合系数指示信息和频域基向量指示信息是同时与CSI-RS资源对应的，或者是同时与端口组对应的。
另外，需要说明的是，本申请实施例是以终端向网络设备发送信道状态信息 具体指示的信息为例进行说明。而在另一实施例中，网络设备需要先为终端配置码本参数信息，进而终端根据码本参数信息向网络设备发送信道状态信息。
其中，网络设备为终端配置的码本参数信息包括每个CSI-RS资源对应的空域基向量的个数、CSI-RS资源对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。或者，网络设备为终端配置的码本参数信息包括每个端口组对应的空域基向量的个数、端口组对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。
在一些实施例中，网络设备为终端配置码本参数信息后，则终端根据配置的码本参数信息确定信道状态信息指示的参数，进而向网络设备发送信道状态信息。
需要说明的是，在第一种情况下，码本结构采用以下公式表示：
Figure PCTCN2022089672-appb-000019
或
Figure PCTCN2022089672-appb-000020
Figure PCTCN2022089672-appb-000021
其中，W表示码本结构，N表示CSI-RS资源的个数，N t表示发送天线端口数，P为CSI-RS端口数，L i表示第i∈{1,…,N}个CSI-RS资源对应的空域基向量或CSI-RS端口的个数，M表示第i个CSI-RS资源对应的频域基向量的个数，N 3表示预编码矩阵指示PMI子带的个数。W 1,i表示对应第i个CSI-RS资源的由L i个空域基向量或用于端口选择的单位基向量组成的矩阵，
Figure PCTCN2022089672-appb-000022
表示组合系数组成的矩阵，W f表示由M个频域基向量组成的矩阵，
Figure PCTCN2022089672-appb-000023
表示维度为X行Y列的复数矩阵。
或者，其中，W表示码本结构，N表示端口组的个数，N t表示发送天线端口数，P为CSI-RS端口数，L i表示第i∈{1,…,N}个端口组对应的空域基向量或CSI-RS端口的个数，M表示第i个端口组对应的频域基向量的个数，N 3表示预编码矩阵指示PMI子带的个数。W 1,i表示对应第i个端口组的由L i个空域基向量或用于端口选择的单位基向量组成的矩阵，
Figure PCTCN2022089672-appb-000024
表示组合系数组成的矩阵，W f表示由M个频域基向量组成的矩阵，
Figure PCTCN2022089672-appb-000025
表示维度为X行Y列的复数矩阵间。
在一些实施例中，若W f关闭，即M＝1。终端根据估计的各端口有效信息分别选择L 1＝2、L 2＝4和L 3＝8个端口，并基于所选的端口计算端口组合系数为
Figure PCTCN2022089672-appb-000026
则网络设备确定终端的预编码的计算公式为
Figure PCTCN2022089672-appb-000027
Figure PCTCN2022089672-appb-000028
UE分别上报W 1,1、W 1,2和W 1,3的指示信息，以及
Figure PCTCN2022089672-appb-000029
中各量化系数信息用于网络设备计算该终端的预编码。
第二种：对多个CSI-RS资源进行分组，得到G个CSI-RS资源组，信道状态信息指示G个CSI-RS资源组中每个CSI-RS资源组对应的信息。其中，G与多个CSI-RS资源的CSI-RS资源组的组数相同，CSI-RS资源组包括至少一个CSI-RS资源，G为大于1的正整数。又或者，对多个端口组进行分组，得到G 个第一分组，信道状态信息指示G个第一分组中每个第一分组对应的信息。其中，G与多个端口组的第一分组的组数相同，第一分组包括至少一个端口组，G为大于1的正整数。
其中，信道状态信息指示以下至少一种信息：
(1)G个空域基向量指示信息或G个端口选择指示信息。
其中，该空域基向量指示信息采用SD basis(Spatial Domain basis，空域基向量)表示。该空域基向量指示信息用于指示终端所选择的L g个空域基向量。L g表示第g∈{1,…,G}个CSI-RS资源组对应的空域基向量的个数。其中，L g表示第g个CSI-RS资源组中每个CSI-RS资源对应的空域基向量的个数和值。或者，端口选择指示信息用于指示终端所选择的L g个CSI-RS端口。L g表示第g∈{1,…,G}个第一分组对应的CSI-RS端口的个数。其中，L g表示第g个第一分组中每个端口组对应的CSI-RS端口的个数和值。
另外，终端向网络设备发送的信道状态信息指示G个空域基向量指示信息或G个端口选择指示信息，G个空域基向量指示信息或G个端口选择指示信息实际上是与G个CSI-RS资源组的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息与CSI-RS资源组一一对应。另外，每个CSI-RS资源组中包括至少一个CSI-RS资源，每个CSI-RS资源对应一个TRP，也就是说，终端上报每个CSI-RS资源组中CSI-RS资源对应的空域基向量或端口选择指示信息。
例如，以空域基向量为例进行说明。该空域基向量为W 1,g，
Figure PCTCN2022089672-appb-000030
W 1,g表示对应第g个CSI-RS资源组的由一个或多个空域基向量组成的矩阵，N g表示第g组内的CSI-RS资源的个数或端口组的个数，N t表示发送天线端口数，L g表示第g组所选的空域基向量或CSI-RS端口的个数，
Figure PCTCN2022089672-appb-000031
表示维度为N gN t×2L g的复数矩阵。
可选地，本申请实施例中包括4个CSI-RS资源，并且CSI-RS资源1和CSI-RS资源2为第1CSI-RS资源组，CSI-RS资源3和CSI-RS资源4为第2CSI-RS资源组，而CSI-RS资源1、CSI-RS资源2、CSI-RS资源3和CSI-RS资源4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1CSI-RS资源组，TRP3和TRP4为第2CSI-RS资源组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，则
Figure PCTCN2022089672-appb-000032
表示维度为2N t×16的复数矩阵，
Figure PCTCN2022089672-appb-000033
表示维度为2N t×12的复数矩阵。
需要说明的是，本申请实施例是以对CSI-RS资源进行分组得到G个CSI-RS资源组为例进行说明。而在另一实施例中，还可以对一个CSI-RS资源的多个端口组进行分组，得到G个第一分组。
另外，终端向网络设备发送的信道状态信息指示G个空域基向量指示信息或G个端口选择指示信息，G个空域基向量指示信息或G个端口选择指示信息实际上是与G个第一分组的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息与第一分组一一对应。另外，每个第一分组中包括至少一个端口组，每个端口组对应一个TRP，也就是说，终端上报每个第一分组中端口组对 应的空域基向量或端口选择指示信息。
例如，以空域基向量为例进行说明。该空域基向量为W 1,g，
Figure PCTCN2022089672-appb-000034
Figure PCTCN2022089672-appb-000035
W 1,g表示对应第g个第一分组的由空域基向量组成的矩阵，N g表示第g组内的CSI-RS资源的个数或端口组的个数，N t表示发送天线端口数，L g表示第g组所选的空域基向量或CSI-RS端口的个数，
Figure PCTCN2022089672-appb-000036
表示维度为N gN t×2L g的复数矩阵。
可选地，本申请实施例中包括4个端口组，并且端口组1和端口组2为第1第一分组，端口组3和端口组4为第2第一分组，而端口组1、端口组2、端口组3和端口组4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1第一分组，TRP3和TRP4为第2第一分组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，则
Figure PCTCN2022089672-appb-000037
表示维度为2N t×16的复数矩阵，
Figure PCTCN2022089672-appb-000038
表示维度为2N t×12的复数矩阵。
(2)G个组合系数指示信息。
在本申请实施例中，终端向网络设备发送的信道状态信息指示G个组合系数指示信息，G个组合系数指示信息信息实际上是与G个CSI-RS资源组的数量对应的，也可以理解为组合系数指示信息信息与CSI-RS资源组一一对应。另外，每个CSI-RS资源组中包括至少一个CSI-RS资源，每个CSI-RS资源对应一个TRP，也就是说，终端上报每个CSI-RS资源组中CSI-RS资源对应的组合系数指示信息。
例如，该组合系数指示信息为
Figure PCTCN2022089672-appb-000039
表示组合系数矩阵。
Figure PCTCN2022089672-appb-000040
N g表示第g组内的CSI-RS资源的个数，L g表示第g组所选的CSI-RS端口的个数，M g表示第g组所选频域基向量的个数，
Figure PCTCN2022089672-appb-000041
表示维度为2L g×M g的复数矩阵。
可选地，本申请实施例中包括4个CSI-RS资源，并且CSI-RS资源1和CSI-RS资源2为第1CSI-RS资源组，CSI-RS资源3和CSI-RS资源4为第2CSI-RS资源组，而CSI-RS资源1、CSI-RS资源2、CSI-RS资源3和CSI-RS资源4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1CSI-RS资源组，TRP3和TRP4为第2CSI-RS资源组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，两组对应的FD basis个数分别为M 1＝4和M 2＝7，
Figure PCTCN2022089672-appb-000042
Figure PCTCN2022089672-appb-000043
需要说明的是，本申请实施例是以对CSI-RS资源进行分组得到G个CSI-RS资源组为例进行说明。而在另一实施例中，还可以对一个CSI-RS资源的多个端口组进行分组，得到G个第一分组。
在本申请实施例中，终端向网络设备发送的信道状态信息指示G个组合系数指示信息，G个组合系数指示信息信息实际上是与G个第一分组的数量对应的，也可以理解为组合系数指示信息信息与第一分组一一对应。另外，每个第一分组中包括至少一个端口组，每个端口组对应一个TRP，也就是说，终端上报每个第一分组中端口组对应的组合系数指示信息。
例如，该组合系数指示信息为
Figure PCTCN2022089672-appb-000044
表示组合系数矩阵。
Figure PCTCN2022089672-appb-000045
N g表示第g组内的端口组的个数，L g表示第g组所选的CSI-RS端口的个数，M g表示第g组所选频域基向量的个数，
Figure PCTCN2022089672-appb-000046
表示维度为2L g×M g的复数矩阵。
可选地，本申请实施例中包括4个端口组，并且端口组1和端口组2为第1第一分组，端口组3和端口组4为第2第一分组，而端口组1、端口组2、端口组3和端口组4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1第一分组，TRP3和TRP4为第2第一分组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，两组对应的FD basis个数分别为M 1＝4和M 2＝7，
Figure PCTCN2022089672-appb-000047
Figure PCTCN2022089672-appb-000048
(3)G个频域基向量指示信息。
在本申请实施例中，终端向网络设备发送的信道状态信息指示G个频域基向量，G个频域基向量指示信息实际上是与G个CSI-RS资源组的数量对应的，也可以理解为频域基向量指示信息与CSI-RS资源组一一对应。另外，每个CSI-RS资源组中包括至少一个CSI-RS资源，每个CSI-RS资源对应一个TRP，也就是说，终端上报每个CSI-RS资源组中CSI-RS资源对应的频域基向量。
例如，该频域基向量为
Figure PCTCN2022089672-appb-000049
表示频域基向量矩阵。
Figure PCTCN2022089672-appb-000050
N表示CSI-RS资源的个数，M g表示第g组所选频域基向量的个数，H为共轭转置，
Figure PCTCN2022089672-appb-000051
表示维度为N 3×M g的复数矩阵。
可选地，本申请实施例中包括4个CSI-RS资源，并且CSI-RS资源1和CSI-RS资源2为第1CSI-RS资源组，CSI-RS资源3和CSI-RS资源4为第2CSI-RS资源组，而CSI-RS资源1、CSI-RS资源2、CSI-RS资源3和CSI-RS资源4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1CSI-RS资源组，TRP3和TRP4为第2CSI-RS资源组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，两组对应的FD basis个数分别为M 1＝4和M 2＝7，
Figure PCTCN2022089672-appb-000052
Figure PCTCN2022089672-appb-000053
需要说明的是，本申请实施例是以对CSI-RS资源进行分组得到G个CSI-RS资源组为例进行说明。而在另一实施例中，还可以对一个CSI-RS资源的多个端口组进行分组，得到G个第一分组。
在本申请实施例中，终端向网络设备发送的信道状态信息指示G个频域基向量，G个频域基向量指示信息实际上是与G个第一分组的数量对应的，也可以理解为频域基向量指示信息与第一分组一一对应。另外，每个第一分组中包括至少一个端口组，每个端口组对应一个TRP，也就是说，终端上报每个第一分组中端口组对应的频域基向量。
例如，该频域基向量为
Figure PCTCN2022089672-appb-000054
表示频域基向量矩阵。
Figure PCTCN2022089672-appb-000055
H为共轭转置。N g表示第g组内的CSI-RS资源的个数或端口组的个数，H为共轭转置，N 3表示PMI的子带个数，M g表示第g组所选频域基向量的个数，
Figure PCTCN2022089672-appb-000056
表示维度为N 3×M g的复数矩阵。
可选地，本申请实施例中包括4个端口组，并且端口组1和端口组2为第1 第一分组，端口组3和端口组4为第2第一分组，而端口组1、端口组2、端口组3和端口组4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1第一分组，TRP3和TRP4为第2第一分组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，两组对应的FD basis个数分别为M 1＝4和M 2＝7，
Figure PCTCN2022089672-appb-000057
Figure PCTCN2022089672-appb-000058
需要说明的是，本申请实施例中信道状态信息指示的空域基向量指示信息、组合系数指示信息和频域基向量指示信息是同时与CSI-RS资源组对应的，或者是同时与端口组的第一分组对应的。
需要说明的是，本申请实施例是以终端向网络设备发送信道状态信息具体指示的信息为例进行说明。而在另一实施例中，网络设备需要先为终端配置码本参数信息，进而终端根据码本参数信息向网络设备发送信道状态信息。
其中，网络设备为终端配置的码本参数信息包括每个CSI-RS资源对应的空域基向量的个数、CSI-RS资源对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。或者，网络设备为终端配置的码本参数信息包括每个端口组对应的空域基向量的个数、端口组对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。
在一些实施例中，网络设备为终端配置码本参数信息后，则终端根据配置的码本参数信息确定信道状态信息指示的参数，进而向网络设备发送信道状态信息。
需要说明的是，在第二种情况下，码本结构采用以下公式表示：
Figure PCTCN2022089672-appb-000059
其中，W表示所述码本结构，W 1,g表示第g组内的CSI-RS资源对应的空域基向量或用于端口选择的单位基向量组成的矩阵，N g表示第g组内的CSI-RS资源的个数，N t表示发送天线端口数，W f,g表示第g组内的CSI-RS资源对应的M g个频域基向量组成的矩阵，M g表示第g组所选频域基向量的个数，
Figure PCTCN2022089672-appb-000060
表示第g组内的CSI-RS资源对应的组合系数组成的矩阵，L g表示第g组所选的空域基向量或CSI-RS端口的个数，G表示与所述CSI-RS资源的CSI-RS资源组的组数相同，G为大于1的正整数，H为共轭转置，N 3表示PMI的子带个数，
Figure PCTCN2022089672-appb-000061
表示维度为X行Y列的复数矩阵。
或者，W表示所述码本结构，W 1,g表示第g组内的端口组对应的空域基向量或用于端口选择的单位基向量组成的矩阵，N g表示第g组内的端口组的个数，N t表示发送天线端口数，W f,g表示第G组内的端口组对应的M g个频域基向量组成的矩阵，M g表示第g组所选频域基向量的个数，
Figure PCTCN2022089672-appb-000062
表示第g组内的端口组对应的组合系数组成的矩阵，L g表示第g组所选的空域基向量或CSI-RS端口的个数，G表示与所述端口组的第一分组的组数相同，G为大于1的正整数，H为共轭转置，N 3表示PMI的子带个数，
Figure PCTCN2022089672-appb-000063
表示维度为X行Y列的复数矩阵。
第三种：信道状态信息指示以下至少一种信息：
(1)一个空域基向量指示信息或一个端口选择指示信息，空域基向量指示信息或端口选择指示信息对应多个CSI-RS资源。
其中，该空域基向量指示信息采用SD basis(Spatial Domain basis，空域基向量)表示。该空域基向量指示信息用于指示终端所选择的N*N t个空域基向量。端口选择指示信息用于指示终端所选择的N*N t个CSI-RS端口，N表示所述CSI-RS资源的个数，或者表示所述端口组的个数，N t表示发送天线端口数。
另外，终端向网络设备发送的信道状态信息指示一个空域基向量指示信息或一个端口选择指示信息，这个空域基向量指示信息或端口选择指示信息实际上是与多个CSI-RS资源的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息适用于多个CSI-RS资源。另外，每个CSI-RS资源对应一个TRP，也就是说，这个空域基向量指示信息或端口选择指示信息对应N个TRP，终端上报N个TRP对应的空域基向量或端口选择指示信息。
例如，以空域基向量为例进行说明。该空域基向量为W 1，该
Figure PCTCN2022089672-appb-000064
或
Figure PCTCN2022089672-appb-000065
W 1表示对应多个CSI-RS资源的L个空域基向量组成的矩阵，N表示CSI-RS资源的个数，N t表示发送天线端口数，L表示CSI-RS资源对应的空域基向量或CSI-RS端口的个数，P为CSI-RS端口数，
Figure PCTCN2022089672-appb-000066
表示维度为NN t×2L的复数矩阵，
Figure PCTCN2022089672-appb-000067
表示维度为NP×2L的复数矩阵。
需要说明的是，本申请实施例是以一个空域基向量指示信息或一个端口选择指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，一个空域基向量指示信息或一个端口选择指示信息还可以与一个CSI-RS资源的多个端口组对应。
其中，信道状态信息指示一个空域基向量指示信息或一个端口选择指示信息，空域基向量指示信息或端口选择指示信息对应多个端口组。
另外，终端向网络设备发送的信道状态信息指示一个空域基向量指示信息或一个端口选择指示信息，这个空域基向量指示信息或端口选择指示信息实际上是与多个端口组的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息适用于多个端口组。另外，每个端口组对应一个TRP，也就是说，这个空域基向量指示信息或端口选择指示信息对应N个TRP，终端上报N个TRP对应的空域基向量。
例如，以空域基向量为例进行说明。该空域基向量为W 1，该
Figure PCTCN2022089672-appb-000068
或
Figure PCTCN2022089672-appb-000069
W 1表示对应多个端口组的L个空域基向量组成的矩阵，N表示端口组的个数，N t表示发送天线端口数，L表示CSI-RS资源对应的空域基向量或CSI-RS端口的个数，P为CSI-RS端口数，
Figure PCTCN2022089672-appb-000070
表示维度为NN t×2L的复数矩阵，
Figure PCTCN2022089672-appb-000071
表示维度为NP×2L的复数矩阵。
(2)一个组合系数指示信息，组合系数指示信息对应多个CSI-RS资源。
在本申请实施例中，终端向网络设备发送的信道状态信息指示一个组合系数指示信息，这个组合系数指示信息实际上是由多个CSI-RS资源共用的，也可以理解为一个组合系数指示信息对应多个CSI-RS资源。另外，每个CSI-RS资源对应一个TRP，也就是说，这N个CSI-RS资源对应N个TRP，终端上报多 个TRP共用的一个组合系数指示信息。
例如，该组合系数指示信息为
Figure PCTCN2022089672-appb-000072
表示组合系数矩阵。
Figure PCTCN2022089672-appb-000073
N表示CSI-RS资源的个数，L表示CSI-RS资源对应的空域基向量或CSI-RS端口的个数，M表示CSI-RS资源对应的频域基向量的个数，
Figure PCTCN2022089672-appb-000074
表示维度为2L×M的复数矩阵。
可选地，若CSI-RS资源的数量为2，并且每个CSI-RS资源对应的空域基向量的个数为4，L为4，至少两个CSI-RS资源对应的频域基向量个数为4，则M为4，
Figure PCTCN2022089672-appb-000075
需要说明的是，本申请实施例是以一个组合系数指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，一个组合系数指示信息还可以与一个CSI-RS资源的多个端口组对应。
在本申请实施例中，终端向网络设备发送的信道状态信息指示一个组合系数指示信息，这个组合系数指示信息实际上是由多个端口组共用的，也可以理解为一个组合系数指示信息对应多个端口组。另外，每个端口组对应一个TRP，也就是说，这N个端口组对应N个TRP，终端上报多个TRP共用的一个组合系数指示信息。
例如，该组合系数指示信息为
Figure PCTCN2022089672-appb-000076
表示组合系数矩阵。
Figure PCTCN2022089672-appb-000077
N表示端口组的个数，L表示CSI-RS资源对应的空域基向量或CSI-RS端口的个数，M表示端口组对应的频域基向量的个数。
可选地，若端口组的数量为2，并且每个端口组对应的空域基向量的个数为4，L为4，至少两个端口组对应的频域基向量个数为4则M为4，
Figure PCTCN2022089672-appb-000078
(3)一个频域基向量指示信息，频域基向量指示信息对应多个CSI-RS资源。
该频域基向量指示信息用于指示终端所选择的M个频域基向量。在本申请实施例中，终端向网络设备发送的信道状态信息指示一个频域基向量指示信息，这个频域基向量指示信息实际上是由多个CSI-RS资源共用的，也可以理解为一个频域基向量指示信息对应多个CSI-RS资源。另外，每个CSI-RS资源对应一个TRP，也就是说，这N个CSI-RS资源对应N个TRP，终端上报多个TRP共用的一个频域基向量指示信息。
例如，该频域基向量指示信息为W f，表示频域基向量矩阵，
Figure PCTCN2022089672-appb-000079
N 3表示PMI子带的个数，M表示CSI-RS资源对应的频域基向量的个数，
Figure PCTCN2022089672-appb-000080
表示维度为N 3×M的复数矩阵。
可选地，若至少两个CSI-RS资源对应的频域基向量个数为4，则M为4，
Figure PCTCN2022089672-appb-000081
需要说明的是，本申请实施例是以一个空域基向量指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，一个空域基向量指示信息还可以与一个CSI-RS资源的多个端口组对应。
在本申请实施例中，终端向网络设备发送的信道状态信息指示一个频域基向量指示信息，这个频域基向量指示信息实际上是由多个端口组共用的，也可以 理解为一个频域基向量指示信息对应多个端口组。另外，每个端口组对应一个TRP，也就是说，这N个端口组对应N个TRP，终端上报多个TRP共用的一个频域基向量指示信息。
例如，该频域基向量指示信息为W f，表示频域基向量矩阵，
Figure PCTCN2022089672-appb-000082
N 3表示PMI子带的个数，M表示端口组对应的频域基向量的个数，
Figure PCTCN2022089672-appb-000083
表示维度为N 3×M的复数矩阵。
可选地，若至少两个端口组对应的频域基向量个数为4，则M为4，
Figure PCTCN2022089672-appb-000084
Figure PCTCN2022089672-appb-000085
需要说明的是，本申请实施例是以终端向网络设备发送信道状态信息具体指示的信息为例进行说明。而在另一实施例中，网络设备需要先为终端配置码本参数信息，进而终端根据码本参数信息向网络设备发送信道状态信息。
其中，网络设备为终端配置的码本参数信息包括每个CSI-RS资源对应的空域基向量的个数、CSI-RS资源对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。或者，网络设备为终端配置的码本参数信息包括每个端口组对应的空域基向量的个数、端口组对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。
在一些实施例中，网络设备为终端配置码本参数信息后，则终端根据配置的码本参数信息确定信道状态信息指示的参数，进而向网络设备发送信道状态信息。
需要说明的是，在第三种情况下，码本结构采用以下公式表示：
Figure PCTCN2022089672-appb-000086
或
Figure PCTCN2022089672-appb-000087
其中，M表示码本结构，N表示CSI-RS资源的个数，N t表示发送天线端口数，P为CSI-RS端口数，L表示CSI-RS资源对应的空域基向量或CSI-RS端口的个数，M表示CSI-RS资源对应的频域基向量的个数，N 3表示预编码矩阵指示PMI子带的个数。W 1表示CSI-RS资源的由L个空域基向量或用于端口选择的单位基向量组成的矩阵，
Figure PCTCN2022089672-appb-000088
表示组合系数指示信息组成的矩阵，W f表示由M个频域基向量组成的矩阵，H为共轭转置，
Figure PCTCN2022089672-appb-000089
表示维度为X行Y列的复数矩阵。
需要说明的是，上述三种方式均以组合系数指示信息为例进行说明。在另一实施例中，该组合系数指示信息中包括多种类型的信息。
可选地，组合系数指示信息包括非零系数信息和非零系数位置信息，非零系数信息指示组合系数指示信息中的非零系数，非零系数位置信息指示非零系数在组合系数指示信息中的位置。
需要说明的是，本申请实施例是以终端向网络设备发送信道状态信息具体指示的信息为例进行说明。而在另一实施例中，网络设备需要先为终端配置码本参数信息，进而终端根据码本参数信息向网络设备发送信道状态信息。
其中，网络设备为终端配置的码本参数信息包括每个CSI-RS资源对应的空域基向量的个数、CSI-RS资源对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。或者，网络设备为终端配置的码本参数信息包括每 个端口组对应的空域基向量的个数、端口组对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。
在一些实施例中，网络设备为终端配置码本参数信息后，则终端根据配置的码本参数信息确定信道状态信息指示的参数，进而向网络设备发送信道状态信息。
本申请实施例提供的方案中，信道状态信息指示的参数包括多种情况，扩展了指示参数的方式，进而提高了指示参数的多样性。
在图3所示的实施例的基础上，终端发送信道状态信息的具体过程如图4所示，参见图4，该方法包括：
步骤401：终端根据每个CSI-RS资源对应的信道信息或有效信道信息以及码本参数信息，确定空域基向量指示信息或端口选择指示信息、组合系数指示信息和频域基向量指示信息。
其中，有效信道信息是指能够采用的信道信息，也可以理解为包括有效参数的信道信息。
在本申请实施例中，终端对每个CSI-RS资源测量后，即可确定每个CSI-RS资源对应的信道信息或有效信道信息，并且终端还可以根据确定的信道信息或有效信道信息以及码本参数信息确定空域基向量指示信息或端口选择指示信息，并且终端确定空域基向量指示信息或端口选择指示信息后，还可以确定组合系数指示信息以及频域基向量指示信息。
步骤402：终端向网络设备发送包括空域基向量指示信息或端口选择指示信息、组合系数指示信息和频域基向量指示信息的信道状态信息。
步骤403：网络设备接收终端发送的包括空域基向量指示信息或端口选择指示信息、组合系数指示信息和频域基向量指示信息的信道状态信息。
在本申请实施例中，终端确定空域基向量指示信息或端口选择指示信息、组合系数指示信息和频域基向量指示信息后，则可以进一步确定信道状态信息，通过该信道状态信息即可指示终端已确定的上述三种信息，进而向网络设备发送该信道状态信息，则网络设备可以接收终端发送的信道状态信息。
本申请实施例提供的方案中，测量每个CSI-RS资源对应的CSI-RS后，向网络设备上报的指示信息中包括多个TRP共用的信息以及每个TRP单独的参数，因此网络可以根据终端上报的参数确定终端的预编码，不仅通过上报的共用参数减少了反馈开销，而且还综合了多个TRP的参数，提高了更高的终端的预编码增益。
在图3所示的实施例的基础上，网络设备会为通过配置信息为终端配置码本参数，参见图5，该方法包括：
步骤501：网络设备向终端发送配置信息，配置信息用于配置码本参数信息，码本参数信息用于供终端确定信道状态信息。
步骤502：终端接收网络设备发送的配置信息，配置信息用于配置码本参数信息，码本参数信息用于供终端确定信道状态信息。
在本申请实施例中，网络设备向终端发送配置信息，通过该配置信息为终端配置码本参数信息，后续终端即可基于码本参数信息向网络设备发送信道状态信息。
在一些实施例中，网络设备向终端发送配置信息之前，还会先确定码本结构，以便于基于该码本结构为终端配置与该码本结构匹配的码本参数信息。
可选地，终端确定码本结构，再通过指示信息向网络设备指示确定的码本结构。
其中，终端向网络设备发送第一指示信息，第一指示信息指示采用的码本结构。
可选地，网络设备确定码本结构，网络设备再通过指示信息向终端指示码本结构。
其中，终端接收网络设备发送的第二指示信息，第二指示信息指示采用的码本结构。
需要说明的是，本申请实施例是以指示信息指示码本结构为例进行说明。在另一实施例中，网络设备与终端之间的码本结构由协议约定，网络设备直接为终端配置约定好的码本结构对应的码本参数信息即可。
本申请实施例提供的方案中，网络设备确定码本结构后，再根据码本结构为终端配置码本参数信息，提高了网络设备配置码本参数信息的准确性。
需要说明的是，上述实施例可以拆分为新实施例，或与其他实施例互相组合为新实施例，本申请对实施例之间的组合不做限定。
图6示出了本申请一个示例性实施例提供的基于码本的预编码确定方法的流程图，示例性的可以应用于如图1所示的终端中，该方法包括以下内容中的至少部分内容：
步骤601：终端基于至少两个CSI-RS资源，确定每个CSI-RS资源对应的信道信息。
其中，CSI-RS资源用于传输CSI-RS。另外，该CSI-RS资源由网络设备配置，进而网络设备可以通过配置的CSI-RS资源向终端发送CSI-RS。
在本申请实施例中，终端基于至少一个CSI-RS资源，对CSI-RS进行测量，以获取测量得到的每个CSI-RS资源对应的信道信息。
在一些实施例中，CSI-RS资源为CMR资源，也就是说，本申请实施例中的CSI-RS资源即为CMR资源。
可选地，不同的CMR资源属于相同的CSI-RS资源集，或者，不同的CMR资源属于不同的CSI-RS资源集。
在一些实施例中，至少一个CSI-RS资源中的每个CSI-RS资源对应一个TRP，至少两个TRP用于CJT。
在另一些实施例中，一个CSI-RS资源中多个端口组中的每个端口组对应一个TRP，至少两个TRP用于CJT。
其中，一个CSI-RS资源对应多个CSI-RS端口，对多个CSI-RS端口进行分组，得到多个端口组，并且每个端口组中包括至少一个CSI-RS端口，而且每个 端口组对应一个TRP。
步骤602：终端根据确定的每个CSI-RS资源对应的信道信息以及码本参数信息，向网络设备发送信道状态信息，信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，端口组包括CSI-RS资源对应的多个CSI-RS端口，信道状态信息用于基于码本参数信息对应的码本结构确定终端的预编码。
其中，码本参数信息用于供终端上报指示信息，以便于网络设备确定终端的预编码。另外，该码本参数信息对应码本结构，也就是说明可以根据该码本参数信息对应码本结构以及信道状态信息确定终端的预编码。另外，本申请实施例中的信道状态信息用于基于码本参数信息对应的码本结构确定终端的预编码，而信道状态信息包括指示信息，也就是说信道状态信息包括的指示信息用于基于码本参数信息对应的码本结构确定终端的预编码。
其中，该信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息。多个CSI-RS资源对应的指示信息是指：信道状态信息包括的用于确定终端的预编码的指示信息可以应用于每个CSI-RS资源，也就是发送一个指示信息即可适用于每个CSI-RS资源。而每个CSI-RS资源对应的指示信息是指：信道状态信息包括的用于终端的预编码的参数应用于一个CSI-RS资源，也就是每个CSI-RS资源对应的指示信息适用于对应的CSI-RS资源，其他CSI-RS资源不适用。
又或者，该信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，该端口组包括CSI-RS资源对应的多个CSI-RS端口。其中，多个端口组对应的指示信息是指：信道状态信息包括的用于确定终端的预编码的指示信息可以应用于每个端口组，也就是发送一个指示信息即可适用于每个端口组。而每个端口组对应的指示信息是指：信道状态信息包括的用于终端的预编码的指示信息应用于一个端口组，也就是每个端口组对应的参数适用于对应的端口组，其他端口组不适用。
在本申请实施例中，终端确定至少一个CSI-RS资源中每个CSI-RS资源对应的信道信息后，根据已获取的信道信息以及码本参数信息，确定终端需要上报给网络设备的指示信息，终端再向网络设备发送包括指示信息的信道状态信息，通过该信道状态信息用于确定终端的预编码的参数。
其中，若至少一个CSI-RS资源包括多个CSI-RS资源，则终端确定的是每个CSI-RS资源对应的信道信息。而若至少一个CSI-RS资源包括一个CSI-RS资源，并且该CSI-RS资源对应多个CSI-RS端口，则终端确定的是多个端口组中每个端口组对应的信道信息。
在一些实施例中，网络设备通过RRC信令为终端配置码本参数信息，或者，网络设备通过其他信令为终端配置码本参数信息。
在一些实施例中，终端根据每个CSI-RS资源对应的信道信息以及码本参数信息，确定空域基向量指示信息、组合系数指示信息和频域基向量指示信息，终端向网络设备发送包括空域基向量指示信息或端口选择指示信息、组合系数指 示信息和频域基向量指示信息的信道状态信息。
在本申请实施例中，终端对每个CSI-RS资源测量后，即可确定每个CSI-RS资源对应的信道信息，并且终端还可以根据确定的信道信息以及码本参数信息确定空域基向量指示信息，并且终端确定空域基向量指示信息后，进一步可以根据空域基向量指示信息以及码本参数信息，来确定组合系数指示信息以及频域基向量指示信息，终端确定空域基向量指示信息、组合系数指示信息和频域基向量指示信息后，则可以进一步确定信道状态信息，通过该信道状态信息即可指示终端已确定的上述三种信息，进而向网络设备发送该信道状态信息。
在图6所示的实施例的基础上，终端发送的信道状态信息指示的多种信息，并且指示的多种信息包括不同的情况。
第一种：信道状态信息包括以下至少一种信息：
(1)N个空域基向量指示信息或N个端口选择指示信息，且N与CSI-RS资源的数量相同，N为大于1的正整数。
其中，该空域基向量指示信息采用SD basis(Spatial Domain basis，空域基向量)表示。该空域基向量指示信息用于指示终端所选择的Li个空域基向量。其中，i属于{1,2…，N}。在一些实施例中，该空域基向量指示信息为空域波束基向量，可以称为波束基向量，也可以称为空域基向量，还可以称为波束。端口选择指示信息用于指示终端所选择的Li个CSI-RS端口。
另外，终端向网络设备发送的信道状态信息包括N个空域基向量指示信息或N个端口选择指示信息，这N个空域基向量指示信息或N个端口选择指示信息实际上是与CSI-RS资源的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息与CSI-RS资源一一对应。另外，每个CSI-RS资源对应一个TRP，也就是说，这N个CSI-RS资源对应N个TRP，终端上报每个TRP对应的空域基向量指示信息或端口选择指示信息。
例如，以空域基向量指示信息进行说明。该空域基向量指示信息指示的空域基向量为W 1,i，该
Figure PCTCN2022089672-appb-000090
或
Figure PCTCN2022089672-appb-000091
W 1,i表示对应第i个CSI-RS资源的由L i个空域基向量组成的矩阵，N表示CSI-RS资源的个数，N t表示发送天线端口数，L i表示第i∈{1,…,N}个CSI-RS资源对应的空域基向量或CSI-RS端口的个数，P为CSI-RS端口数。
Figure PCTCN2022089672-appb-000092
表示维度为X行Y列的复数矩阵，例如X为，Y为2L i，也即是
Figure PCTCN2022089672-appb-000093
下述实施例中与本申请实施例中的
Figure PCTCN2022089672-appb-000094
类似，不再一一举例说明。
可选地，若CSI-RS资源的数量为2，并且每个CSI-RS资源对应的空域基向量的个数为4，L i为4，则
Figure PCTCN2022089672-appb-000095
需要说明的是，本申请实施例是以N个空域基向量指示信息或N个端口选择指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，N个空域基向量指示信息或N个端口选择指示信息还可以与一个CSI-RS资源的多个端口组对应。
其中，该信道状态信息包括N个空域基向量指示信息或N个端口选择指示信息，且N与端口组的数量相同，N为大于1的正整数。
终端向网络设备发送的信道状态信息包括N个空域基向量指示信息或N个端口选择指示信息，这N个空域基向量指示信息或N个端口选择指示信息实际上是与端口组的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息与端口组一一对应。另外，每个端口组对应一个TRP，也就是说，这N个端口组对应N个TRP，终端上报每个TRP对应的空域基向量指示信息或端口选择指示信息。
例如，以空域基向量指示信息进行说明，该空域基向量指示信息指示的空域基向量为W 1,i，该
Figure PCTCN2022089672-appb-000096
或
Figure PCTCN2022089672-appb-000097
W 1,i表示对应第i个端口组的由L i个空域基向量组成的矩阵，N表示至少两个端口组的个数，N t表示发送天线端口数，L i表示第i∈{1,…,N}个端口组对应的空域基向量或CSI-RS端口的个数，P为CSI-RS端口数。
可选地，若端口组的数量为2，并且每个端口组对应的空域基向量的个数为4，L i为4，则
Figure PCTCN2022089672-appb-000098
(2)一个组合系数指示信息，组合系数指示信息对应多个CSI-RS资源。
在本申请实施例中，终端向网络设备发送的信道状态信息包括一个组合系数指示信息，这个组合系数指示信息实际上是由多个CSI-RS资源共用的，也可以理解为一个组合系数指示信息对应多个CSI-RS资源。另外，每个CSI-RS资源对应一个TRP，也就是说，这N个CSI-RS资源对应N个TRP，终端上报多个TRP共用的一个组合系数指示信息。
例如，该组合系数指示信息指示的组合系数矩阵为
Figure PCTCN2022089672-appb-000099
N表示CSI-RS资源的个数，L i表示第i∈{1,…,N}个CSI-RS资源对应的空域基向量指示信息或CSI-RS端口的个数，M表示CSI-RS资源对应的频域基向量的个数。
可选地，若CSI-RS资源的数量为2，并且每个CSI-RS资源对应的空域基向量的个数为4，L i为4，至少两个CSI-RS资源对应的频域基向量个数为4则M为4，
Figure PCTCN2022089672-appb-000100
需要说明的是，本申请实施例是以一个组合系数指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，一个组合系数指示信息还可以与一个CSI-RS资源的多个端口组对应。
其中，该信道状态信息包括一个组合系数指示信息，组合系数指示信息对应多个端口组。
在本申请实施例中，终端向网络设备发送的信道状态信息包括一个组合系数指示信息，这个组合系数指示信息实际上是由多个端口组共用的，也可以理解为一个组合系数指示信息对应多个端口组。另外，每个端口组对应一个TRP，也就是说，这N个端口组对应N个TRP，终端上报多个TRP共用的一个组合系数指示信息。
例如，该组合系数指示信息指示的组合系数矩阵为
Figure PCTCN2022089672-appb-000101
N表示端口组的个数，L i表示第i∈{1,…,N}个端口组对应的空域基向量或CSI-RS端口的个数，M表示端口组对应的频域基向量的个数。
可选地，若端口组的数量为2，并且每个端口组对应的空域基向量的个数为4，L i为4，至少两个端口组对应的频域基向量个数为4则M为4，
Figure PCTCN2022089672-appb-000102
(3)一个频域基向量指示信息，该频域基向量指示信息对应多个CSI-RS资源。
其中，该频域基向量指示信息用于指示终端所选择的M个频域基向量。频域基向量指示信息用于表征信道在频域上的变化规律。频域基向量具体可用于表示各空域基向量的加权系数在各个频域单元上的变化规律。频域基向量所表征的变化规律与多径时延等因素相关。
在本申请实施例中，终端向网络设备发送的信道状态信息包括一个频域基向量指示信息，这个频域基向量指示信息实际上是由多个CSI-RS资源共用的，也可以理解为一个频域基向量指示信息对应多个CSI-RS资源。另外，每个CSI-RS资源对应一个TRP，也就是说，这N个CSI-RS资源对应N个TRP，终端上报多个TRP共用的一个频域基向量指示信息。
例如，该频域基向量指示信息指示的频域基向量为W f，表示频域基向量矩阵，
Figure PCTCN2022089672-appb-000103
N 3表示PMI子带的个数，M表示CSI-RS资源对应的频域基向量的个数。
可选地，若至少两个CSI-RS资源对应的频域基向量个数为4，则M为4，
Figure PCTCN2022089672-appb-000104
需要说明的是，本申请实施例是以一个频域基向量指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，一个频域基向量指示信息还可以与一个CSI-RS资源的多个端口组对应。
其中，该信道状态信息包括一个频域基向量指示信息，频域基向量指示信息对应多个端口组。
在本申请实施例中，终端向网络设备发送的信道状态信息包括一个频域基向量指示信息，这个频域基向量指示信息实际上是由多个端口组共用的，也可以理解为一个频域基向量指示信息对应多个端口组。另外，每个端口组对应一个TRP，也就是说，这N个端口组对应N个TRP，终端上报多个TRP共用的一个频域基向量指示信息。
例如，该频域基向量指示信息指示的频域基向量为W f，表示频域基向量矩阵，
Figure PCTCN2022089672-appb-000105
N 3表示PMI子带的个数，M表示端口组对应的频域基向量的个数。
可选地，若至少两个端口组对应的频域基向量个数为4，则M为4，
Figure PCTCN2022089672-appb-000106
Figure PCTCN2022089672-appb-000107
需要说明的是，本申请实施例中信道状态信息指示的空域基向量指示信息、组合系数指示信息和频域基向量指示信息是同时与CSI-RS资源对应的，或者是同时与端口组对应的。
另外，需要说明的是，本申请实施例是以终端向网络设备发送信道状态信息具体指示的信息为例进行说明。而在另一实施例中，网络设备需要先为终端配置码本参数信息，进而终端根据码本参数信息向网络设备发送信道状态信息。
其中，网络设备为终端配置的码本参数信息包括每个CSI-RS资源对应的空域基向量的个数、CSI-RS资源对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。或者，网络设备为终端配置的码本参数信息包括每个端口组对应的空域基向量的个数、端口组对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。
在一些实施例中，网络设备为终端配置码本参数信息后，则终端根据配置的码本参数信息确定信道状态信息指示的参数，进而向网络设备发送信道状态信息。
第二种：对多个CSI-RS资源进行分组，得到G个CSI-RS资源组，信道状态信息指示G个CSI-RS资源组中每个CSI-RS资源组对应的信息。其中，G与多个CSI-RS资源的CSI-RS资源组的组数相同，CSI-RS资源组包括至少一个CSI-RS资源，G为大于1的正整数。又或者，对多个端口组进行分组，得到G个第一分组，信道状态信息指示G个第一分组中每个第一分组对应的信息。其中，G与多个端口组的第一分组的组数相同，第一分组包括至少一个端口组，G为大于1的正整数。
其中，信道状态信息指示以下至少一种信息：
(1)G个空域基向量指示信息或G个端口选择指示信息。
其中，该空域基向量指示信息采用SD basis(Spatial Domain basis，空域基向量)表示。该空域基向量指示信息用于指示终端所选择的L g个空域基向量。L g表示第g∈{1,…,G}个CSI-RS资源组对应的空域基向量的个数。其中，L g表示第g个CSI-RS资源组中每个CSI-RS资源对应的空域基向量的个数和值。或者，端口选择指示信息用于指示终端所选择的L g个CSI-RS端口。L g表示第g∈{1,…,G}个第一分组对应的CSI-RS端口的个数。其中，L g表示第g个第一分组中每个端口组对应的CSI-RS端口的个数和值。
另外，终端向网络设备发送的信道状态信息指示G个空域基向量指示信息或G个端口选择指示信息，G个空域基向量指示信息或G个端口选择指示信息实际上是与G个CSI-RS资源组的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息与CSI-RS资源组一一对应。另外，每个CSI-RS资源组中包括至少一个CSI-RS资源，每个CSI-RS资源对应一个TRP，也就是说，终端上报每个CSI-RS资源组中CSI-RS资源对应的空域基向量或端口选择指示信息。
例如，以空域基向量为例进行说明。该空域基向量为W 1,g，
Figure PCTCN2022089672-appb-000108
Figure PCTCN2022089672-appb-000109
W 1,g表示对应第g个CSI-RS资源组的由一个或多个空域基向量组成的矩阵，N g表示第g组内的CSI-RS资源的个数或端口组的个数，N t表示发送天线端口数，L g表示第g组所选的空域基向量或CSI-RS端口的个数，
Figure PCTCN2022089672-appb-000110
表示维度为N gN t×2L g的复数矩阵。
可选地，本申请实施例中包括4个CSI-RS资源，并且CSI-RS资源1和CSI-RS资源2为第1CSI-RS资源组，CSI-RS资源3和CSI-RS资源4为第2CSI-RS资源组，而CSI-RS资源1、CSI-RS资源2、CSI-RS资源3和CSI-RS资源4分 别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1CSI-RS资源组，TRP3和TRP4为第2CSI-RS资源组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，则
Figure PCTCN2022089672-appb-000111
表示维度为2N t×16的复数矩阵，
Figure PCTCN2022089672-appb-000112
表示维度为2N t×12的复数矩阵。
需要说明的是，本申请实施例是以对CSI-RS资源进行分组得到G个CSI-RS资源组为例进行说明。而在另一实施例中，还可以对一个CSI-RS资源的多个端口组进行分组，得到G个第一分组。
另外，终端向网络设备发送的信道状态信息指示G个空域基向量指示信息或G个端口选择指示信息，G个空域基向量指示信息或G个端口选择指示信息实际上是与G个第一分组的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息与第一分组一一对应。另外，每个第一分组中包括至少一个端口组，每个端口组对应一个TRP，也就是说，终端上报每个第一分组中端口组对应的空域基向量或端口选择指示信息。
例如，以空域基向量为例进行说明。该空域基向量为W 1,g，
Figure PCTCN2022089672-appb-000113
Figure PCTCN2022089672-appb-000114
W 1,g表示对应第g个第一分组的由空域基向量组成的矩阵，N g表示第g组内的CSI-RS资源的个数或端口组的个数，N t表示发送天线端口数，L g表示第g组所选的空域基向量或CSI-RS端口的个数，
Figure PCTCN2022089672-appb-000115
表示维度为N gN t×2L g的复数矩阵。
可选地，本申请实施例中包括4个端口组，并且端口组1和端口组2为第1第一分组，端口组3和端口组4为第2第一分组，而端口组1、端口组2、端口组3和端口组4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1第一分组，TRP3和TRP4为第2第一分组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，则
Figure PCTCN2022089672-appb-000116
表示维度为2N t×16的复数矩阵，
Figure PCTCN2022089672-appb-000117
表示维度为2N t×12的复数矩阵。
(2)G个组合系数指示信息。
在本申请实施例中，终端向网络设备发送的信道状态信息指示G个组合系数指示信息，G个组合系数指示信息信息实际上是与G个CSI-RS资源组的数量对应的，也可以理解为组合系数指示信息信息与CSI-RS资源组一一对应。另外，每个CSI-RS资源组中包括至少一个CSI-RS资源，每个CSI-RS资源对应一个TRP，也就是说，终端上报每个CSI-RS资源组中CSI-RS资源对应的组合系数指示信息。
例如，该组合系数指示信息为
Figure PCTCN2022089672-appb-000118
表示组合系数矩阵。
Figure PCTCN2022089672-appb-000119
N g表示第g组内的CSI-RS资源的个数，L g表示第g组所选的CSI-RS端口的个数，M g表示第g组所选频域基向量的个数，
Figure PCTCN2022089672-appb-000120
表示维度为2L g×M g的复数矩阵。
可选地，本申请实施例中包括4个CSI-RS资源，并且CSI-RS资源1和CSI-RS资源2为第1CSI-RS资源组，CSI-RS资源3和CSI-RS资源4为第2CSI-RS资源组，而CSI-RS资源1、CSI-RS资源2、CSI-RS资源3和CSI-RS资源4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1CSI- RS资源组，TRP3和TRP4为第2CSI-RS资源组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，两组对应的FD basis个数分别为M 1＝4和M 2＝7，
Figure PCTCN2022089672-appb-000121
Figure PCTCN2022089672-appb-000122
需要说明的是，本申请实施例是以对CSI-RS资源进行分组得到G个CSI-RS资源组为例进行说明。而在另一实施例中，还可以对一个CSI-RS资源的多个端口组进行分组，得到G个第一分组。
在本申请实施例中，终端向网络设备发送的信道状态信息指示G个组合系数指示信息，G个组合系数指示信息信息实际上是与G个第一分组的数量对应的，也可以理解为组合系数指示信息信息与第一分组一一对应。另外，每个第一分组中包括至少一个端口组，每个端口组对应一个TRP，也就是说，终端上报每个第一分组中端口组对应的组合系数指示信息。
例如，该组合系数指示信息为
Figure PCTCN2022089672-appb-000123
表示组合系数矩阵。
Figure PCTCN2022089672-appb-000124
N g表示第g组内的端口组的个数，L g表示第g组所选的CSI-RS端口的个数，M g表示第g组所选频域基向量的个数，
Figure PCTCN2022089672-appb-000125
表示维度为2L g×M g的复数矩阵。
可选地，本申请实施例中包括4个端口组，并且端口组1和端口组2为第1第一分组，端口组3和端口组4为第2第一分组，而端口组1、端口组2、端口组3和端口组4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1第一分组，TRP3和TRP4为第2第一分组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，两组对应的FD basis个数分别为M 1＝4和M 2＝7，
Figure PCTCN2022089672-appb-000126
Figure PCTCN2022089672-appb-000127
(3)G个频域基向量指示信息。
在本申请实施例中，终端向网络设备发送的信道状态信息指示G个频域基向量，G个频域基向量指示信息实际上是与G个CSI-RS资源组的数量对应的，也可以理解为频域基向量指示信息与CSI-RS资源组一一对应。另外，每个CSI-RS资源组中包括至少一个CSI-RS资源，每个CSI-RS资源对应一个TRP，也就是说，终端上报每个CSI-RS资源组中CSI-RS资源对应的频域基向量。
例如，该频域基向量为
Figure PCTCN2022089672-appb-000128
表示频域基向量矩阵。
Figure PCTCN2022089672-appb-000129
N表示CSI-RS资源的个数，M g表示第g组所选频域基向量的个数，H为共轭转置，
Figure PCTCN2022089672-appb-000130
表示维度为N 3×M g的复数矩阵。
可选地，本申请实施例中包括4个CSI-RS资源，并且CSI-RS资源1和CSI-RS资源2为第1CSI-RS资源组，CSI-RS资源3和CSI-RS资源4为第2CSI-RS资源组，而CSI-RS资源1、CSI-RS资源2、CSI-RS资源3和CSI-RS资源4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1CSI-RS资源组，TRP3和TRP4为第2CSI-RS资源组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，两组对应的FD basis个数分别为M 1＝4和M 2＝7，
Figure PCTCN2022089672-appb-000131
Figure PCTCN2022089672-appb-000132
需要说明的是，本申请实施例是以对CSI-RS资源进行分组得到G个CSI-RS资源组为例进行说明。而在另一实施例中，还可以对一个CSI-RS资源的多 个端口组进行分组，得到G个第一分组。
在本申请实施例中，终端向网络设备发送的信道状态信息指示G个频域基向量，G个频域基向量指示信息实际上是与G个第一分组的数量对应的，也可以理解为频域基向量指示信息与第一分组一一对应。另外，每个第一分组中包括至少一个端口组，每个端口组对应一个TRP，也就是说，终端上报每个第一分组中端口组对应的频域基向量。
例如，该频域基向量为
Figure PCTCN2022089672-appb-000133
表示频域基向量矩阵。
Figure PCTCN2022089672-appb-000134
H为共轭转置。N g表示第g组内的CSI-RS资源的个数或端口组的个数，H为共轭转置，N 3表示PMI的子带个数，M g表示第g组所选频域基向量的个数，
Figure PCTCN2022089672-appb-000135
表示维度为N 3×M g的复数矩阵。
可选地，本申请实施例中包括4个端口组，并且端口组1和端口组2为第1第一分组，端口组3和端口组4为第2第一分组，而端口组1、端口组2、端口组3和端口组4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1第一分组，TRP3和TRP4为第2第一分组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，两组对应的FD basis个数分别为M 1＝4和M 2＝7，
Figure PCTCN2022089672-appb-000136
Figure PCTCN2022089672-appb-000137
需要说明的是，本申请实施例中信道状态信息指示的空域基向量指示信息、组合系数指示信息和频域基向量指示信息是同时与CSI-RS资源组对应的，或者是同时与端口组的第一分组对应的。
需要说明的是，本申请实施例是以终端向网络设备发送信道状态信息具体指示的信息为例进行说明。而在另一实施例中，网络设备需要先为终端配置码本参数信息，进而终端根据码本参数信息向网络设备发送信道状态信息。
其中，网络设备为终端配置的码本参数信息包括每个CSI-RS资源对应的空域基向量的个数、CSI-RS资源对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。或者，网络设备为终端配置的码本参数信息包括每个端口组对应的空域基向量的个数、端口组对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。
在一些实施例中，网络设备为终端配置码本参数信息后，则终端根据配置的码本参数信息确定信道状态信息指示的参数，进而向网络设备发送信道状态信息。
第三种：信道状态信息指示以下至少一种信息：
(1)一个空域基向量指示信息或一个端口选择指示信息，空域基向量指示信息或端口选择指示信息对应多个CSI-RS资源。
其中，该空域基向量指示信息采用SD basis(Spatial Domain basis，空域基向量)表示。该空域基向量指示信息用于指示终端所选择的N*N t个空域基向量。端口选择指示信息用于指示终端所选择的N*N t个CSI-RS端口，N表示所述CSI-RS资源的个数，或者表示所述端口组的个数，N t表示发送天线端口数。
另外，终端向网络设备发送的信道状态信息指示一个空域基向量指示信息或一个端口选择指示信息，这个空域基向量指示信息或端口选择指示信息实际 上是与多个CSI-RS资源的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息适用于多个CSI-RS资源。另外，每个CSI-RS资源对应一个TRP，也就是说，这个空域基向量指示信息或端口选择指示信息对应N个TRP，终端上报N个TRP对应的空域基向量或端口选择指示信息。
例如，以空域基向量为例进行说明。该空域基向量为W 1，该
Figure PCTCN2022089672-appb-000138
或
Figure PCTCN2022089672-appb-000139
W 1表示对应多个CSI-RS资源的L个空域基向量组成的矩阵，N表示CSI-RS资源的个数，N t表示发送天线端口数，L表示CSI-RS资源对应的空域基向量或CSI-RS端口的个数，P为CSI-RS端口数，
Figure PCTCN2022089672-appb-000140
表示维度为NN t×2L的复数矩阵，
Figure PCTCN2022089672-appb-000141
表示维度为NP×2L的复数矩阵。
需要说明的是，本申请实施例是以一个空域基向量指示信息或一个端口选择指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，一个空域基向量指示信息或一个端口选择指示信息还可以与一个CSI-RS资源的多个端口组对应。
其中，信道状态信息指示一个空域基向量指示信息或一个端口选择指示信息，空域基向量指示信息或端口选择指示信息对应多个端口组。
另外，终端向网络设备发送的信道状态信息指示一个空域基向量指示信息或一个端口选择指示信息，这个空域基向量指示信息或端口选择指示信息实际上是与多个端口组的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息适用于多个端口组。另外，每个端口组对应一个TRP，也就是说，这个空域基向量指示信息或端口选择指示信息对应N个TRP，终端上报N个TRP对应的空域基向量。
例如，以空域基向量为例进行说明。该空域基向量为W 1，该
Figure PCTCN2022089672-appb-000142
或
Figure PCTCN2022089672-appb-000143
W 1表示对应多个端口组的L个空域基向量组成的矩阵，N表示端口组的个数，N t表示发送天线端口数，L表示CSI-RS资源对应的空域基向量或CSI-RS端口的个数，P为CSI-RS端口数，
Figure PCTCN2022089672-appb-000144
表示维度为NN t×2L的复数矩阵，
Figure PCTCN2022089672-appb-000145
表示维度为NP×2L的复数矩阵。
(2)一个组合系数指示信息，组合系数指示信息对应多个CSI-RS资源。
在本申请实施例中，终端向网络设备发送的信道状态信息指示一个组合系数指示信息，这个组合系数指示信息实际上是由多个CSI-RS资源共用的，也可以理解为一个组合系数指示信息对应多个CSI-RS资源。另外，每个CSI-RS资源对应一个TRP，也就是说，这N个CSI-RS资源对应N个TRP，终端上报多个TRP共用的一个组合系数指示信息。
例如，该组合系数指示信息为
Figure PCTCN2022089672-appb-000146
表示组合系数矩阵。
Figure PCTCN2022089672-appb-000147
N表示CSI-RS资源的个数，L表示CSI-RS资源对应的空域基向量或CSI-RS端口的个数，M表示CSI-RS资源对应的频域基向量的个数，
Figure PCTCN2022089672-appb-000148
表示维度为2L×M的复数矩阵。
可选地，若CSI-RS资源的数量为2，并且每个CSI-RS资源对应的空域基向量的个数为4，L为4，至少两个CSI-RS资源对应的频域基向量个数为4，则M为4，
Figure PCTCN2022089672-appb-000149
需要说明的是，本申请实施例是以一个组合系数指示信息与CSI-RS资源对 应为例进行说明。而在另一实施例中，一个组合系数指示信息还可以与一个CSI-RS资源的多个端口组对应。
在本申请实施例中，终端向网络设备发送的信道状态信息指示一个组合系数指示信息，这个组合系数指示信息实际上是由多个端口组共用的，也可以理解为一个组合系数指示信息对应多个端口组。另外，每个端口组对应一个TRP，也就是说，这N个端口组对应N个TRP，终端上报多个TRP共用的一个组合系数指示信息。
例如，该组合系数指示信息为
Figure PCTCN2022089672-appb-000150
表示组合系数矩阵。
Figure PCTCN2022089672-appb-000151
N表示端口组的个数，L表示CSI-RS资源对应的空域基向量或CSI-RS端口的个数，M表示端口组对应的频域基向量的个数。
可选地，若端口组的数量为2，并且每个端口组对应的空域基向量的个数为4，L为4，至少两个端口组对应的频域基向量个数为4则M为4，
Figure PCTCN2022089672-appb-000152
(3)一个频域基向量指示信息，频域基向量指示信息对应多个CSI-RS资源。
该频域基向量指示信息用于指示终端所选择的M个频域基向量。在本申请实施例中，终端向网络设备发送的信道状态信息指示一个频域基向量指示信息，这个频域基向量指示信息实际上是由多个CSI-RS资源共用的，也可以理解为一个频域基向量指示信息对应多个CSI-RS资源。另外，每个CSI-RS资源对应一个TRP，也就是说，这N个CSI-RS资源对应N个TRP，终端上报多个TRP共用的一个频域基向量指示信息。
例如，该频域基向量指示信息为W f，表示频域基向量矩阵，
Figure PCTCN2022089672-appb-000153
N 3表示PMI子带的个数，M表示CSI-RS资源对应的频域基向量的个数，
Figure PCTCN2022089672-appb-000154
表示维度为N 3×M的复数矩阵。
可选地，若至少两个CSI-RS资源对应的频域基向量个数为4，则M为4，
Figure PCTCN2022089672-appb-000155
需要说明的是，本申请实施例是以一个空域基向量指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，一个空域基向量指示信息还可以与一个CSI-RS资源的多个端口组对应。
在本申请实施例中，终端向网络设备发送的信道状态信息指示一个频域基向量指示信息，这个频域基向量指示信息实际上是由多个端口组共用的，也可以理解为一个频域基向量指示信息对应多个端口组。另外，每个端口组对应一个TRP，也就是说，这N个端口组对应N个TRP，终端上报多个TRP共用的一个频域基向量指示信息。
例如，该频域基向量指示信息为W f，表示频域基向量矩阵，
Figure PCTCN2022089672-appb-000156
N 3表示PMI子带的个数，M表示端口组对应的频域基向量的个数，
Figure PCTCN2022089672-appb-000157
表示维度为N 3×M的复数矩阵。
可选地，若至少两个端口组对应的频域基向量个数为4，则M为4，
Figure PCTCN2022089672-appb-000158
Figure PCTCN2022089672-appb-000159
需要说明的是，本申请实施例是以终端向网络设备发送信道状态信息具体 指示的信息为例进行说明。而在另一实施例中，网络设备需要先为终端配置码本参数信息，进而终端根据码本参数信息向网络设备发送信道状态信息。
其中，网络设备为终端配置的码本参数信息包括每个CSI-RS资源对应的空域基向量的个数、CSI-RS资源对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。或者，网络设备为终端配置的码本参数信息包括每个端口组对应的空域基向量的个数、端口组对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。
在一些实施例中，网络设备为终端配置码本参数信息后，则终端根据配置的码本参数信息确定信道状态信息指示的参数，进而向网络设备发送信道状态信息。
需要说明的是，上述三种方式均以组合系数指示信息为例进行说明。在另一实施例中，该组合系数指示信息中包括多种类型的信息。
可选地，组合系数指示信息包括非零系数信息和非零系数位置信息，非零系数信息指示组合系数指示信息中的非零系数，非零系数位置信息指示非零系数在组合系数指示信息中的位置。
需要说明的是，本申请实施例是以终端向网络设备发送信道状态信息具体指示的信息为例进行说明。而在另一实施例中，网络设备需要先为终端配置码本参数信息，进而终端根据码本参数信息向网络设备发送信道状态信息。
其中，网络设备为终端配置的码本参数信息包括每个CSI-RS资源对应的空域基向量的个数、CSI-RS资源对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。或者，网络设备为终端配置的码本参数信息包括每个端口组对应的空域基向量的个数、端口组对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。
在一些实施例中，网络设备为终端配置码本参数信息后，则终端根据配置的码本参数信息确定信道状态信息指示的参数，进而向网络设备发送信道状态信息。
本申请实施例提供的方案中，信道状态信息指示的参数包括多种情况，扩展了指示参数的方式，进而提高了指示参数的多样性。
在一些实施例中，终端根据每个CSI-RS资源对应的信道信息或有效信道信息以及码本参数信息，确定空域基向量指示信息或端口选择指示信息、组合系数指示信息和频域基向量指示信息，终端向网络设备发送包括空域基向量指示信息或端口选择指示信息、组合系数指示信息和频域基向量指示信息的信道状态信息。
其中，有效信道信息是指能够采用的信道信息，也可以理解为包括有效参数的信道信息。
在本申请实施例中，终端对每个CSI-RS资源测量后，即可确定每个CSI-RS资源对应的信道信息或有效信道信息，并且终端还可以根据确定的信道信息或有效信道信息以及码本参数信息确定空域基向量指示信息或端口选择指示信息，并且终端确定空域基向量指示信息或端口选择指示信息后，还可以确定组合系数指示信息以及频域基向量指示信息，然后终端确定信道状态信息，通过该信道 状态信息即可指示终端已确定的上述三种信息，进而向网络设备发送该信道状态信息。
本申请实施例提供的方案中，测量每个CSI-RS资源对应的CSI-RS后，向网络设备上报的指示信息中包括多个TRP共用的信息以及每个TRP单独的参数，因此网络可以根据终端上报的参数确定终端的预编码，不仅通过上报的共用参数减少了反馈开销，而且还综合了多个TRP的参数，提高了更高的终端的预编码增益。
在图6所示的实施例的基础上，终端接收网络设备发送的配置信息，配置信息用于配置码本参数信息，码本参数信息用于供终端确定信道状态信息。
在本申请实施例中，网络设备向终端发送配置信息，通过该配置信息为终端配置码本参数信息，后续终端即可基于码本参数信息向网络设备发送信道状态信息。
在一些实施例中，网络设备向终端发送配置信息之前，还会先确定码本结构，以便于基于该码本结构为终端配置与该码本结构匹配的码本参数信息。
可选地，终端确定码本结构，再通过指示信息向网络设备指示确定的码本结构。
其中，终端向网络设备发送第一指示信息，第一指示信息指示采用的码本结构。
可选地，网络设备确定码本结构，网络设备再通过指示信息向终端指示码本结构。
其中，终端接收网络设备发送的第二指示信息，第二指示信息指示采用的码本结构。
需要说明的是，本申请实施例是以指示信息指示码本结构为例进行说明。在另一实施例中，网络设备与终端之间的码本结构由协议约定，网络设备直接为终端配置约定好的码本结构对应的码本参数信息即可。
本申请实施例提供的方案中，网络设备确定码本结构后，再根据码本结构为终端配置码本参数信息，提高了网络设备配置码本参数信息的准确性。
图7示出了本申请一个示例性实施例提供的基于码本的预编码确定方法的流程图，示例性的可以应用于如图1所示的网络设备中，该方法包括以下内容中的至少部分内容：
步骤701：网络设备接收终端发送的信道状态信息，信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，端口组包括CSI-RS资源对应的多个CSI-RS端口，信道状态信息由终端基于至少一个CSI-RS资源中每个CSI-RS资源对应的信道信息以及码本参数信息确定。
其中，CSI-RS资源用于传输CSI-RS。另外，该CSI-RS资源由网络设备配置，进而网络设备可以通过配置的CSI-RS资源向终端发送CSI-RS。
在本申请实施例中，终端基于至少一个CSI-RS资源，对CSI-RS进行测量， 以获取测量得到的每个CSI-RS资源对应的信道信息。
在一些实施例中，CSI-RS资源为CMR(Channel Measurement Resource,信道测量资源)资源，也就是说，本申请实施例中的CSI-RS资源即为CMR资源。
可选地，不同的CMR资源属于相同的CSI-RS资源集，或者，不同的CMR资源属于不同的CSI-RS资源集。
在一些实施例中，至少一个CSI-RS资源中的每个CSI-RS资源对应一个TRP，至少两个TRP用于CJT(Coherent Joint Transmission,相干传输)。
在另一些实施例中，一个CSI-RS资源中多个端口组中的每个端口组对应一个TRP，至少两个TRP用于CJT。
其中，一个CSI-RS资源对应多个CSI-RS端口，对多个CSI-RS端口进行分组，得到多个端口组，并且每个端口组中包括至少一个CSI-RS端口，而且每个端口组对应一个TRP。
其中，码本参数信息用于供终端上报指示信息，以便于网络设备确定终端的预编码。另外，该码本参数信息对应码本结构，也就是说明可以根据该码本参数信息对应码本结构以及信道状态信息确定终端的预编码。另外，本申请实施例中的信道状态信息用于基于码本参数信息对应的码本结构确定终端的预编码，而信道状态信息包括指示信息，也就是说信道状态信息包括的指示信息用于基于码本参数信息对应的码本结构确定终端的预编码。
其中，该信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息。多个CSI-RS资源对应的指示信息是指：信道状态信息包括的用于确定终端的预编码的指示信息可以应用于每个CSI-RS资源，也就是发送一个指示信息即可适用于每个CSI-RS资源。而每个CSI-RS资源对应的指示信息是指：信道状态信息包括的用于终端的预编码的参数应用于一个CSI-RS资源，也就是每个CSI-RS资源对应的指示信息适用于对应的CSI-RS资源，其他CSI-RS资源不适用。
又或者，该信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，该端口组包括CSI-RS资源对应的多个CSI-RS端口。其中，多个端口组对应的指示信息是指：信道状态信息包括的用于确定终端的预编码的指示信息可以应用于每个端口组，也就是发送一个指示信息即可适用于每个端口组。而每个端口组对应的指示信息是指：信道状态信息包括的用于终端的预编码的指示信息应用于一个端口组，也就是每个端口组对应的参数适用于对应的端口组，其他端口组不适用。
在本申请实施例中，终端确定至少一个CSI-RS资源中每个CSI-RS资源对应的信道信息后，根据已获取的信道信息以及码本参数信息，确定终端需要上报给网络设备的指示信息，终端再向网络设备发送包括指示信息的信道状态信息，通过该信道状态信息用于确定终端的预编码的参数。
其中，若至少一个CSI-RS资源包括多个CSI-RS资源，则终端确定的是每个CSI-RS资源对应的信道信息。而若至少一个CSI-RS资源包括一个CSI-RS资源，并且该CSI-RS资源对应多个CSI-RS端口，则终端确定的是多个端口组中每个端口组对应的信道信息。
在一些实施例中，网络设备通过RRC(Radio Resource Control,无线资源控制)信令为终端配置码本参数信息，或者，网络设备通过其他信令为终端配置码本参数信息。
步骤702：网络设备根据信道状态信息以及码本参数信息对应的码本结构，确定终端的预编码。
其中，码本参数信息对应有码本结构，码本的结构不同，则网络设备基于码本结构确定终端的预编码的方式不同。
在本申请实施例中，网络设备接收到信道状态信息后，根据该信道状态信息可以确定该信道状态信息指示的多个CSI-RS资源共用的参数以及每个CSI-RS资源对应的参数，或者确定该信道状态信息指示的一个CSI-RS资源中多个端口组共用的参数以及每个端口组对应的参数，再根据确定的参数以及码本参数信息对应的码本结构，确定终端的预编码。
本申请实施例提供方案中，终端测量每个CSI-RS资源对应的CSI-RS后，向网络设备上报的指示信息中包括CSI-RS资源共用的参数和每个CSI-RS资源对应的参数，或者包括一个CSI-RS资源对应的多个端口组共用的参数和每个端口组对应的参数，并且多个CSI-RS资源或多个端口组可以理解为对应多个TRP，也就是本申请确定了多个TRP共用的参数以及每个TRP单独的参数，因此网络设备可以根据终端上报的参数确定终端的预编码，不仅通过上报的共用参数减少了反馈开销，而且还综合了多个TRP的参数，提高了确定的终端的预编码增益。
在图7所示的实施例的基础上，终端发送的信道状态信息包括的多种信息，并且包括的多种信息包括不同的情况。
第一种：信道状态信息包括以下至少一种信息：
(1)N个空域基向量指示信息或N个端口选择指示信息，且N与CSI-RS资源的数量相同，N为大于1的正整数。
其中，该空域基向量指示信息采用SD basis(Spatial Domain basis，空域基向量)表示。该空域基向量指示信息用于指示终端所选择的Li个空域基向量。其中，i属于{1,2…，N}。在一些实施例中，该空域基向量指示信息为空域波束基向量，可以称为波束基向量，也可以称为空域基向量，还可以称为波束。端口选择指示信息用于指示终端所选择的Li个CSI-RS端口。
另外，终端向网络设备发送的信道状态信息包括N个空域基向量指示信息或N个端口选择指示信息，这N个空域基向量指示信息或N个端口选择指示信息实际上是与CSI-RS资源的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息与CSI-RS资源一一对应。另外，每个CSI-RS资源对应一个TRP，也就是说，这N个CSI-RS资源对应N个TRP，终端上报每个TRP对应的空域基向量指示信息或端口选择指示信息。
例如，以空域基向量指示信息进行说明。该空域基向量指示信息指示的空域基向量为W 1,i，该
Figure PCTCN2022089672-appb-000160
或
Figure PCTCN2022089672-appb-000161
W 1,i表示对应第i个CSI-RS资源的由L i个空域基向量组成的矩阵，N表示CSI-RS资源的个数，N t表示发送天线端口数，L i表示第i∈{1,…,N}个CSI-RS资源对应的空域基向量或CSI-RS端 口的个数，P为CSI-RS端口数。
Figure PCTCN2022089672-appb-000162
表示维度为X行Y列的复数矩阵，例如X为，Y为2L i，也即是
Figure PCTCN2022089672-appb-000163
下述实施例中与本申请实施例中的
Figure PCTCN2022089672-appb-000164
类似，不再一一举例说明。
可选地，若CSI-RS资源的数量为2，并且每个CSI-RS资源对应的空域基向量的个数为4，L i为4，则
Figure PCTCN2022089672-appb-000165
需要说明的是，本申请实施例是以N个空域基向量指示信息或N个端口选择指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，N个空域基向量指示信息或N个端口选择指示信息还可以与一个CSI-RS资源的多个端口组对应。
其中，该信道状态信息包括N个空域基向量指示信息或N个端口选择指示信息，且N与端口组的数量相同，N为大于1的正整数。
终端向网络设备发送的信道状态信息包括N个空域基向量指示信息或N个端口选择指示信息，这N个空域基向量指示信息或N个端口选择指示信息实际上是与端口组的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息与端口组一一对应。另外，每个端口组对应一个TRP，也就是说，这N个端口组对应N个TRP，终端上报每个TRP对应的空域基向量指示信息或端口选择指示信息。
例如，以空域基向量指示信息进行说明，该空域基向量指示信息指示的空域基向量为W 1,i，该
Figure PCTCN2022089672-appb-000166
或
Figure PCTCN2022089672-appb-000167
W 1,i表示对应第i个端口组的由L i个空域基向量组成的矩阵，N表示至少两个端口组的个数，N t表示发送天线端口数，L i表示第i∈{1,…,N}个端口组对应的空域基向量或CSI-RS端口的个数，P为CSI-RS端口数。
可选地，若端口组的数量为2，并且每个端口组对应的空域基向量的个数为4，L i为4，则
Figure PCTCN2022089672-appb-000168
(2)一个组合系数指示信息，组合系数指示信息对应多个CSI-RS资源。
在本申请实施例中，终端向网络设备发送的信道状态信息包括一个组合系数指示信息，这个组合系数指示信息实际上是由多个CSI-RS资源共用的，也可以理解为一个组合系数指示信息对应多个CSI-RS资源。另外，每个CSI-RS资源对应一个TRP，也就是说，这N个CSI-RS资源对应N个TRP，终端上报多个TRP共用的一个组合系数指示信息。
例如，该组合系数指示信息指示的组合系数矩阵为
Figure PCTCN2022089672-appb-000169
N表示CSI-RS资源的个数，L i表示第i∈{1,…,N}个CSI-RS资源对应的空域基向量指示信息或CSI-RS端口的个数，M表示CSI-RS资源对应的频域基向量的个数。
可选地，若CSI-RS资源的数量为2，并且每个CSI-RS资源对应的空域基向量的个数为4，L i为4，至少两个CSI-RS资源对应的频域基向量个数为4则M为4，
Figure PCTCN2022089672-appb-000170
需要说明的是，本申请实施例是以一个组合系数指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，一个组合系数指示信息还可以与一个CSI- RS资源的多个端口组对应。
其中，该信道状态信息包括一个组合系数指示信息，组合系数指示信息对应多个端口组。
在本申请实施例中，终端向网络设备发送的信道状态信息包括一个组合系数指示信息，这个组合系数指示信息实际上是由多个端口组共用的，也可以理解为一个组合系数指示信息对应多个端口组。另外，每个端口组对应一个TRP，也就是说，这N个端口组对应N个TRP，终端上报多个TRP共用的一个组合系数指示信息。
例如，该组合系数指示信息指示的组合系数矩阵为
Figure PCTCN2022089672-appb-000171
N表示端口组的个数，L i表示第i∈{1,…,N}个端口组对应的空域基向量或CSI-RS端口的个数，M表示端口组对应的频域基向量的个数。
可选地，若端口组的数量为2，并且每个端口组对应的空域基向量的个数为4，L i为4，至少两个端口组对应的频域基向量个数为4则M为4，
Figure PCTCN2022089672-appb-000172
(3)一个频域基向量指示信息，该频域基向量指示信息对应多个CSI-RS资源。
其中，该频域基向量指示信息用于指示终端所选择的M个频域基向量。频域基向量指示信息用于表征信道在频域上的变化规律。频域基向量具体可用于表示各空域基向量的加权系数在各个频域单元上的变化规律。频域基向量所表征的变化规律与多径时延等因素相关。
在本申请实施例中，终端向网络设备发送的信道状态信息包括一个频域基向量指示信息，这个频域基向量指示信息实际上是由多个CSI-RS资源共用的，也可以理解为一个频域基向量指示信息对应多个CSI-RS资源。另外，每个CSI-RS资源对应一个TRP，也就是说，这N个CSI-RS资源对应N个TRP，终端上报多个TRP共用的一个频域基向量指示信息。
例如，该频域基向量指示信息指示的频域基向量为W f，表示频域基向量矩阵，
Figure PCTCN2022089672-appb-000173
N 3表示PMI子带的个数，M表示CSI-RS资源对应的频域基向量的个数。
可选地，若至少两个CSI-RS资源对应的频域基向量个数为4，则M为4，
Figure PCTCN2022089672-appb-000174
需要说明的是，本申请实施例是以一个频域基向量指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，一个频域基向量指示信息还可以与一个CSI-RS资源的多个端口组对应。
其中，该信道状态信息包括一个频域基向量指示信息，频域基向量指示信息对应多个端口组。
在本申请实施例中，终端向网络设备发送的信道状态信息包括一个频域基向量指示信息，这个频域基向量指示信息实际上是由多个端口组共用的，也可以理解为一个频域基向量指示信息对应多个端口组。另外，每个端口组对应一个TRP，也就是说，这N个端口组对应N个TRP，终端上报多个TRP共用的一个频域基向量指示信息。
例如，该频域基向量指示信息指示的频域基向量为W f，表示频域基向量矩阵，
Figure PCTCN2022089672-appb-000175
N 3表示PMI子带的个数，M表示端口组对应的频域基向量的个数。
可选地，若至少两个端口组对应的频域基向量个数为4，则M为4，
Figure PCTCN2022089672-appb-000176
Figure PCTCN2022089672-appb-000177
需要说明的是，本申请实施例中信道状态信息指示的空域基向量指示信息、组合系数指示信息和频域基向量指示信息是同时与CSI-RS资源对应的，或者是同时与端口组对应的。
另外，需要说明的是，本申请实施例是以终端向网络设备发送信道状态信息具体指示的信息为例进行说明。而在另一实施例中，网络设备需要先为终端配置码本参数信息，进而终端根据码本参数信息向网络设备发送信道状态信息。
其中，网络设备为终端配置的码本参数信息包括每个CSI-RS资源对应的空域基向量的个数、CSI-RS资源对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。或者，网络设备为终端配置的码本参数信息包括每个端口组对应的空域基向量的个数、端口组对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。
在一些实施例中，网络设备为终端配置码本参数信息后，则终端根据配置的码本参数信息确定信道状态信息指示的参数，进而向网络设备发送信道状态信息。
需要说明的是，在第一种情况下，码本结构采用以下公式表示：
Figure PCTCN2022089672-appb-000178
或
Figure PCTCN2022089672-appb-000179
Figure PCTCN2022089672-appb-000180
其中，W表示码本结构，N表示CSI-RS资源的个数，N t表示发送天线端口数，P为CSI-RS端口数，L i表示第i∈{1,…,N}个CSI-RS资源对应的空域基向量或CSI-RS端口的个数，M表示第i个CSI-RS资源对应的频域基向量的个数，N 3表示预编码矩阵指示PMI子带的个数。W 1,i表示对应第i个CSI-RS资源的由L i个空域基向量或用于端口选择的单位基向量组成的矩阵，
Figure PCTCN2022089672-appb-000181
表示组合系数组成的矩阵，W f表示由M个频域基向量组成的矩阵，
Figure PCTCN2022089672-appb-000182
表示维度为X行Y列的复数矩阵。
或者，其中，W表示码本结构，N表示端口组的个数，N t表示发送天线端口数，P为CSI-RS端口数，L i表示第i∈{1,…,N}个端口组对应的空域基向量或CSI-RS端口的个数，M表示第i个端口组对应的频域基向量的个数，N 3表示预编码矩阵指示PMI子带的个数。W 1,i表示对应第i个端口组的由L i个空域基向量或用于端口选择的单位基向量组成的矩阵，
Figure PCTCN2022089672-appb-000183
表示组合系数组成的矩阵，W f表示由M个频域基向量组成的矩阵，
Figure PCTCN2022089672-appb-000184
表示维度为X行Y列的复数矩阵间。
在一些实施例中，若W f关闭，即M＝1。终端根据估计的各端口有效信息分别选择L 1＝2、L 2＝4和L 3＝8个端口，并基于所选的端口计算端口组合系数为
Figure PCTCN2022089672-appb-000185
则网络设备确定终端的预编码的计算公式为
Figure PCTCN2022089672-appb-000186
Figure PCTCN2022089672-appb-000187
UE分别上报W 1,1、W 1,2和W 1,3的指示信息，以及
Figure PCTCN2022089672-appb-000188
中各量化系数信息用于网络设备计算该终端的预编码。
第二种：对多个CSI-RS资源进行分组，得到G个CSI-RS资源组，信道状态信息指示G个CSI-RS资源组中每个CSI-RS资源组对应的信息。其中，G与多个CSI-RS资源的CSI-RS资源组的组数相同，CSI-RS资源组包括至少一个CSI-RS资源，G为大于1的正整数。又或者，对多个端口组进行分组，得到G个第一分组，信道状态信息指示G个第一分组中每个第一分组对应的信息。其中，G与多个端口组的第一分组的组数相同，第一分组包括至少一个端口组，G为大于1的正整数。
其中，信道状态信息指示以下至少一种信息：
(1)G个空域基向量指示信息或G个端口选择指示信息。
其中，该空域基向量指示信息采用SD basis(Spatial Domain basis，空域基向量)表示。该空域基向量指示信息用于指示终端所选择的L g个空域基向量。L g表示第g∈{1,…,G}个CSI-RS资源组对应的空域基向量的个数。其中，L g表示第g个CSI-RS资源组中每个CSI-RS资源对应的空域基向量的个数和值。或者，端口选择指示信息用于指示终端所选择的L g个CSI-RS端口。L g表示第g∈{1,…,G}个第一分组对应的CSI-RS端口的个数。其中，L g表示第g个第一分组中每个端口组对应的CSI-RS端口的个数和值。
另外，终端向网络设备发送的信道状态信息指示G个空域基向量指示信息或G个端口选择指示信息，G个空域基向量指示信息或G个端口选择指示信息实际上是与G个CSI-RS资源组的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息与CSI-RS资源组一一对应。另外，每个CSI-RS资源组中包括至少一个CSI-RS资源，每个CSI-RS资源对应一个TRP，也就是说，终端上报每个CSI-RS资源组中CSI-RS资源对应的空域基向量或端口选择指示信息。
例如，以空域基向量为例进行说明。该空域基向量为W 1,g，
Figure PCTCN2022089672-appb-000189
Figure PCTCN2022089672-appb-000190
W 1,g表示对应第g个CSI-RS资源组的由一个或多个空域基向量组成的矩阵，N g表示第g组内的CSI-RS资源的个数或端口组的个数，N t表示发送天线端口数，L g表示第g组所选的空域基向量或CSI-RS端口的个数，
Figure PCTCN2022089672-appb-000191
表示维度为N gN t×2L g的复数矩阵。
可选地，本申请实施例中包括4个CSI-RS资源，并且CSI-RS资源1和CSI-RS资源2为第1CSI-RS资源组，CSI-RS资源3和CSI-RS资源4为第2CSI-RS资源组，而CSI-RS资源1、CSI-RS资源2、CSI-RS资源3和CSI-RS资源4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1CSI-RS资源组，TRP3和TRP4为第2CSI-RS资源组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，则
Figure PCTCN2022089672-appb-000192
表示维度为2N t×16 的复数矩阵，
Figure PCTCN2022089672-appb-000193
表示维度为2N t×12的复数矩阵。
需要说明的是，本申请实施例是以对CSI-RS资源进行分组得到G个CSI-RS资源组为例进行说明。而在另一实施例中，还可以对一个CSI-RS资源的多个端口组进行分组，得到G个第一分组。
另外，终端向网络设备发送的信道状态信息指示G个空域基向量指示信息或G个端口选择指示信息，G个空域基向量指示信息或G个端口选择指示信息实际上是与G个第一分组的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息与第一分组一一对应。另外，每个第一分组中包括至少一个端口组，每个端口组对应一个TRP，也就是说，终端上报每个第一分组中端口组对应的空域基向量或端口选择指示信息。
例如，以空域基向量为例进行说明。该空域基向量为W 1,g，
Figure PCTCN2022089672-appb-000194
Figure PCTCN2022089672-appb-000195
W 1,g表示对应第g个第一分组的由空域基向量组成的矩阵，N g表示第g组内的CSI-RS资源的个数或端口组的个数，N t表示发送天线端口数，L g表示第g组所选的空域基向量或CSI-RS端口的个数，
Figure PCTCN2022089672-appb-000196
表示维度为N gN t×2L g的复数矩阵。
可选地，本申请实施例中包括4个端口组，并且端口组1和端口组2为第1第一分组，端口组3和端口组4为第2第一分组，而端口组1、端口组2、端口组3和端口组4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1第一分组，TRP3和TRP4为第2第一分组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，则
Figure PCTCN2022089672-appb-000197
表示维度为2N t×16的复数矩阵，
Figure PCTCN2022089672-appb-000198
表示维度为2N t×12的复数矩阵。
(2)G个组合系数指示信息。
在本申请实施例中，终端向网络设备发送的信道状态信息指示G个组合系数指示信息，G个组合系数指示信息信息实际上是与G个CSI-RS资源组的数量对应的，也可以理解为组合系数指示信息信息与CSI-RS资源组一一对应。另外，每个CSI-RS资源组中包括至少一个CSI-RS资源，每个CSI-RS资源对应一个TRP，也就是说，终端上报每个CSI-RS资源组中CSI-RS资源对应的组合系数指示信息。
例如，该组合系数指示信息为
Figure PCTCN2022089672-appb-000199
表示组合系数矩阵。
Figure PCTCN2022089672-appb-000200
N g表示第g组内的CSI-RS资源的个数，L g表示第g组所选的CSI-RS端口的个数，M g表示第g组所选频域基向量的个数，
Figure PCTCN2022089672-appb-000201
表示维度为2L g×M g的复数矩阵。
可选地，本申请实施例中包括4个CSI-RS资源，并且CSI-RS资源1和CSI-RS资源2为第1CSI-RS资源组，CSI-RS资源3和CSI-RS资源4为第2CSI-RS资源组，而CSI-RS资源1、CSI-RS资源2、CSI-RS资源3和CSI-RS资源4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1CSI-RS资源组，TRP3和TRP4为第2CSI-RS资源组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，两组对应的FD basis个数分别为M 1＝4和M 2＝7，
Figure PCTCN2022089672-appb-000202
Figure PCTCN2022089672-appb-000203
需要说明的是，本申请实施例是以对CSI-RS资源进行分组得到G个CSI-RS资源组为例进行说明。而在另一实施例中，还可以对一个CSI-RS资源的多个端口组进行分组，得到G个第一分组。
在本申请实施例中，终端向网络设备发送的信道状态信息指示G个组合系数指示信息，G个组合系数指示信息信息实际上是与G个第一分组的数量对应的，也可以理解为组合系数指示信息信息与第一分组一一对应。另外，每个第一分组中包括至少一个端口组，每个端口组对应一个TRP，也就是说，终端上报每个第一分组中端口组对应的组合系数指示信息。
例如，该组合系数指示信息为
Figure PCTCN2022089672-appb-000204
表示组合系数矩阵。
Figure PCTCN2022089672-appb-000205
N g表示第g组内的端口组的个数，L g表示第g组所选的CSI-RS端口的个数，M g表示第g组所选频域基向量的个数，
Figure PCTCN2022089672-appb-000206
表示维度为2L g×M g的复数矩阵。
可选地，本申请实施例中包括4个端口组，并且端口组1和端口组2为第1第一分组，端口组3和端口组4为第2第一分组，而端口组1、端口组2、端口组3和端口组4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1第一分组，TRP3和TRP4为第2第一分组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，两组对应的FD basis个数分别为M 1＝4和M 2＝7，
Figure PCTCN2022089672-appb-000207
Figure PCTCN2022089672-appb-000208
(3)G个频域基向量指示信息。
在本申请实施例中，终端向网络设备发送的信道状态信息指示G个频域基向量，G个频域基向量指示信息实际上是与G个CSI-RS资源组的数量对应的，也可以理解为频域基向量指示信息与CSI-RS资源组一一对应。另外，每个CSI-RS资源组中包括至少一个CSI-RS资源，每个CSI-RS资源对应一个TRP，也就是说，终端上报每个CSI-RS资源组中CSI-RS资源对应的频域基向量。
例如，该频域基向量为
Figure PCTCN2022089672-appb-000209
表示频域基向量矩阵。
Figure PCTCN2022089672-appb-000210
N表示CSI-RS资源的个数，M g表示第g组所选频域基向量的个数，H为共轭转置，
Figure PCTCN2022089672-appb-000211
表示维度为N 3×M g的复数矩阵。
可选地，本申请实施例中包括4个CSI-RS资源，并且CSI-RS资源1和CSI-RS资源2为第1CSI-RS资源组，CSI-RS资源3和CSI-RS资源4为第2CSI-RS资源组，而CSI-RS资源1、CSI-RS资源2、CSI-RS资源3和CSI-RS资源4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1CSI-RS资源组，TRP3和TRP4为第2CSI-RS资源组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，两组对应的FD basis个数分别为M 1＝4和M 2＝7，
Figure PCTCN2022089672-appb-000212
Figure PCTCN2022089672-appb-000213
需要说明的是，本申请实施例是以对CSI-RS资源进行分组得到G个CSI-RS资源组为例进行说明。而在另一实施例中，还可以对一个CSI-RS资源的多个端口组进行分组，得到G个第一分组。
在本申请实施例中，终端向网络设备发送的信道状态信息指示G个频域基向量，G个频域基向量指示信息实际上是与G个第一分组的数量对应的，也可 以理解为频域基向量指示信息与第一分组一一对应。另外，每个第一分组中包括至少一个端口组，每个端口组对应一个TRP，也就是说，终端上报每个第一分组中端口组对应的频域基向量。
例如，该频域基向量为
Figure PCTCN2022089672-appb-000214
表示频域基向量矩阵。
Figure PCTCN2022089672-appb-000215
H为共轭转置。N g表示第g组内的CSI-RS资源的个数或端口组的个数，H为共轭转置，N 3表示PMI的子带个数，M g表示第g组所选频域基向量的个数，
Figure PCTCN2022089672-appb-000216
表示维度为N 3×M g的复数矩阵。
可选地，本申请实施例中包括4个端口组，并且端口组1和端口组2为第1第一分组，端口组3和端口组4为第2第一分组，而端口组1、端口组2、端口组3和端口组4分别对应TRP1、TRP2、TRP3和TRP4，也可以理解为TRP1和TRP2为第1第一分组，TRP3和TRP4为第2第一分组，SD basis个数为L 1＝L 2＝4，L 3＝L 4＝3，两组对应的FD basis个数分别为M 1＝4和M 2＝7，
Figure PCTCN2022089672-appb-000217
Figure PCTCN2022089672-appb-000218
需要说明的是，本申请实施例中信道状态信息指示的空域基向量指示信息、组合系数指示信息和频域基向量指示信息是同时与CSI-RS资源组对应的，或者是同时与端口组的第一分组对应的。
需要说明的是，本申请实施例是以终端向网络设备发送信道状态信息具体指示的信息为例进行说明。而在另一实施例中，网络设备需要先为终端配置码本参数信息，进而终端根据码本参数信息向网络设备发送信道状态信息。
其中，网络设备为终端配置的码本参数信息包括每个CSI-RS资源对应的空域基向量的个数、CSI-RS资源对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。或者，网络设备为终端配置的码本参数信息包括每个端口组对应的空域基向量的个数、端口组对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。
在一些实施例中，网络设备为终端配置码本参数信息后，则终端根据配置的码本参数信息确定信道状态信息指示的参数，进而向网络设备发送信道状态信息。
需要说明的是，在第二种情况下，码本结构采用以下公式表示：
Figure PCTCN2022089672-appb-000219
其中，W表示所述码本结构，W 1,g表示第g组内的CSI-RS资源对应的空域基向量或用于端口选择的单位基向量组成的矩阵，N g表示第g组内的CSI-RS资源的个数，N t表示发送天线端口数，W f,g表示第g组内的CSI-RS资源对应的M g个频域基向量组成的矩阵，M g表示第g组所选频域基向量的个数，
Figure PCTCN2022089672-appb-000220
表示第g组内的CSI-RS资源对应的组合系数组成的矩阵，L g表示第g组所选的空域基向量或CSI-RS端口的个数，G表示与所述CSI-RS资源的CSI-RS资源组的组数相同，G为大于1的正整数，H为共轭转置，N 3表示PMI的子带个数，
Figure PCTCN2022089672-appb-000221
表示 维度为X行Y列的复数矩阵。
或者，W表示所述码本结构，W 1,g表示第g组内的端口组对应的空域基向量或用于端口选择的单位基向量组成的矩阵，N g表示第g组内的端口组的个数，N t表示发送天线端口数，W f,g表示第G组内的端口组对应的M g个频域基向量组成的矩阵，M g表示第g组所选频域基向量的个数，
Figure PCTCN2022089672-appb-000222
表示第g组内的端口组对应的组合系数组成的矩阵，L g表示第g组所选的空域基向量或CSI-RS端口的个数，G表示与所述端口组的第一分组的组数相同，G为大于1的正整数，H为共轭转置，N 3表示PMI的子带个数，
Figure PCTCN2022089672-appb-000223
表示维度为X行Y列的复数矩阵。
第三种：信道状态信息指示以下至少一种信息：
(1)一个空域基向量指示信息或一个端口选择指示信息，空域基向量指示信息或端口选择指示信息对应多个CSI-RS资源。
其中，该空域基向量指示信息采用SD basis(Spatial Domain basis，空域基向量)表示。该空域基向量指示信息用于指示终端所选择的N*N t个空域基向量。端口选择指示信息用于指示终端所选择的N*N t个CSI-RS端口，N表示所述CSI-RS资源的个数，或者表示所述端口组的个数，N t表示发送天线端口数。
另外，终端向网络设备发送的信道状态信息指示一个空域基向量指示信息或一个端口选择指示信息，这个空域基向量指示信息或端口选择指示信息实际上是与多个CSI-RS资源的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息适用于多个CSI-RS资源。另外，每个CSI-RS资源对应一个TRP，也就是说，这个空域基向量指示信息或端口选择指示信息对应N个TRP，终端上报N个TRP对应的空域基向量或端口选择指示信息。
例如，以空域基向量为例进行说明。该空域基向量为W 1，该
Figure PCTCN2022089672-appb-000224
或
Figure PCTCN2022089672-appb-000225
W 1表示对应多个CSI-RS资源的L个空域基向量组成的矩阵，N表示CSI-RS资源的个数，N t表示发送天线端口数，L表示CSI-RS资源对应的空域基向量或CSI-RS端口的个数，P为CSI-RS端口数，
Figure PCTCN2022089672-appb-000226
表示维度为NN t×2L的复数矩阵，
Figure PCTCN2022089672-appb-000227
表示维度为NP×2L的复数矩阵。
需要说明的是，本申请实施例是以一个空域基向量指示信息或一个端口选择指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，一个空域基向量指示信息或一个端口选择指示信息还可以与一个CSI-RS资源的多个端口组对应。
其中，信道状态信息指示一个空域基向量指示信息或一个端口选择指示信息，空域基向量指示信息或端口选择指示信息对应多个端口组。
另外，终端向网络设备发送的信道状态信息指示一个空域基向量指示信息或一个端口选择指示信息，这个空域基向量指示信息或端口选择指示信息实际上是与多个端口组的数量对应的，也可以理解为空域基向量指示信息或端口选择指示信息适用于多个端口组。另外，每个端口组对应一个TRP，也就是说，这个空域基向量指示信息或端口选择指示信息对应N个TRP，终端上报N个TRP对应的空域基向量。
例如，以空域基向量为例进行说明。该空域基向量为W 1，该
Figure PCTCN2022089672-appb-000228
或
Figure PCTCN2022089672-appb-000229
W 1表示对应多个端口组的L个空域基向量组成的矩阵，N表示端口组的个数，N t表示发送天线端口数，L表示CSI-RS资源对应的空域基向量或CSI-RS端口的个数，P为CSI-RS端口数，
Figure PCTCN2022089672-appb-000230
表示维度为NN t×2L的复数矩阵，
Figure PCTCN2022089672-appb-000231
表示维度为NP×2L的复数矩阵。
(2)一个组合系数指示信息，组合系数指示信息对应多个CSI-RS资源。
在本申请实施例中，终端向网络设备发送的信道状态信息指示一个组合系数指示信息，这个组合系数指示信息实际上是由多个CSI-RS资源共用的，也可以理解为一个组合系数指示信息对应多个CSI-RS资源。另外，每个CSI-RS资源对应一个TRP，也就是说，这N个CSI-RS资源对应N个TRP，终端上报多个TRP共用的一个组合系数指示信息。
例如，该组合系数指示信息为
Figure PCTCN2022089672-appb-000232
表示组合系数矩阵。
Figure PCTCN2022089672-appb-000233
N表示CSI-RS资源的个数，L表示CSI-RS资源对应的空域基向量或CSI-RS端口的个数，M表示CSI-RS资源对应的频域基向量的个数，
Figure PCTCN2022089672-appb-000234
表示维度为2L×M的复数矩阵。
可选地，若CSI-RS资源的数量为2，并且每个CSI-RS资源对应的空域基向量的个数为4，L为4，至少两个CSI-RS资源对应的频域基向量个数为4，则M为4，
Figure PCTCN2022089672-appb-000235
需要说明的是，本申请实施例是以一个组合系数指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，一个组合系数指示信息还可以与一个CSI-RS资源的多个端口组对应。
在本申请实施例中，终端向网络设备发送的信道状态信息指示一个组合系数指示信息，这个组合系数指示信息实际上是由多个端口组共用的，也可以理解为一个组合系数指示信息对应多个端口组。另外，每个端口组对应一个TRP，也就是说，这N个端口组对应N个TRP，终端上报多个TRP共用的一个组合系数指示信息。
例如，该组合系数指示信息为
Figure PCTCN2022089672-appb-000236
表示组合系数矩阵。
Figure PCTCN2022089672-appb-000237
N表示端口组的个数，L表示CSI-RS资源对应的空域基向量或CSI-RS端口的个数，M表示端口组对应的频域基向量的个数。
可选地，若端口组的数量为2，并且每个端口组对应的空域基向量的个数为4，L为4，至少两个端口组对应的频域基向量个数为4则M为4，
Figure PCTCN2022089672-appb-000238
(3)一个频域基向量指示信息，频域基向量指示信息对应多个CSI-RS资源。
该频域基向量指示信息用于指示终端所选择的M个频域基向量。在本申请实施例中，终端向网络设备发送的信道状态信息指示一个频域基向量指示信息，这个频域基向量指示信息实际上是由多个CSI-RS资源共用的，也可以理解为一个频域基向量指示信息对应多个CSI-RS资源。另外，每个CSI-RS资源对应一个TRP，也就是说，这N个CSI-RS资源对应N个TRP，终端上报多个TRP共用的一个频域基向量指示信息。
例如，该频域基向量指示信息为W f，表示频域基向量矩阵，
Figure PCTCN2022089672-appb-000239
N 3表示PMI子带的个数，M表示CSI-RS资源对应的频域基向量的个数，
Figure PCTCN2022089672-appb-000240
表示维度为N 3×M的复数矩阵。
可选地，若至少两个CSI-RS资源对应的频域基向量个数为4，则M为4，
Figure PCTCN2022089672-appb-000241
需要说明的是，本申请实施例是以一个空域基向量指示信息与CSI-RS资源对应为例进行说明。而在另一实施例中，一个空域基向量指示信息还可以与一个CSI-RS资源的多个端口组对应。
在本申请实施例中，终端向网络设备发送的信道状态信息指示一个频域基向量指示信息，这个频域基向量指示信息实际上是由多个端口组共用的，也可以理解为一个频域基向量指示信息对应多个端口组。另外，每个端口组对应一个TRP，也就是说，这N个端口组对应N个TRP，终端上报多个TRP共用的一个频域基向量指示信息。
例如，该频域基向量指示信息为W f，表示频域基向量矩阵，
Figure PCTCN2022089672-appb-000242
N 3表示PMI子带的个数，M表示端口组对应的频域基向量的个数，
Figure PCTCN2022089672-appb-000243
表示维度为N 3×M的复数矩阵。
可选地，若至少两个端口组对应的频域基向量个数为4，则M为4，
Figure PCTCN2022089672-appb-000244
Figure PCTCN2022089672-appb-000245
需要说明的是，本申请实施例是以终端向网络设备发送信道状态信息具体指示的信息为例进行说明。而在另一实施例中，网络设备需要先为终端配置码本参数信息，进而终端根据码本参数信息向网络设备发送信道状态信息。
其中，网络设备为终端配置的码本参数信息包括每个CSI-RS资源对应的空域基向量的个数、CSI-RS资源对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。或者，网络设备为终端配置的码本参数信息包括每个端口组对应的空域基向量的个数、端口组对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。
在一些实施例中，网络设备为终端配置码本参数信息后，则终端根据配置的码本参数信息确定信道状态信息指示的参数，进而向网络设备发送信道状态信息。
需要说明的是，在第三种情况下，码本结构采用以下公式表示：
Figure PCTCN2022089672-appb-000246
或
Figure PCTCN2022089672-appb-000247
其中，W表示码本结构，N表示CSI-RS资源的个数，N t表示发送天线端口数，P为CSI-RS端口数，L表示CSI-RS资源对应的空域基向量或CSI-RS端口的个数，M表示CSI-RS资源对应的频域基向量的个数，N 3表示预编码矩阵指示PMI子带的个数。W 1表示CSI-RS资源的由L个空域基向量或用于端口选择的单位基向量组成的矩阵，
Figure PCTCN2022089672-appb-000248
表示组合系数指示信息组成的矩阵，W f表示由M个频域基向量组成的矩阵，H为共轭转置，
Figure PCTCN2022089672-appb-000249
表示维度为X行Y列的复数矩阵。
需要说明的是，上述三种方式均以组合系数指示信息为例进行说明。在另一实施例中，该组合系数指示信息中包括多种类型的信息。
可选地，组合系数指示信息包括非零系数信息和非零系数位置信息，非零系数信息指示组合系数指示信息中的非零系数，非零系数位置信息指示非零系数在组合系数指示信息中的位置。
在一些实施例中，网络设备接收终端发送的包括空域基向量指示信息或端口选择指示信息、组合系数指示信息和频域基向量指示信息的信道状态信息。
空域基向量指示信息或端口选择指示信息、组合系数指示信息和频域基向量指示信息由终端根据每个CSI-RS资源对应的信道信息或有效信道信息以及码本参数信息确定。
需要说明的是，本申请实施例是以终端向网络设备发送信道状态信息具体指示的信息为例进行说明。而在另一实施例中，网络设备需要先为终端配置码本参数信息，进而终端根据码本参数信息向网络设备发送信道状态信息。
其中，网络设备为终端配置的码本参数信息包括每个CSI-RS资源对应的空域基向量的个数、CSI-RS资源对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。或者，网络设备为终端配置的码本参数信息包括每个端口组对应的空域基向量的个数、端口组对应的频域基向量的个数、PMI子带的个数或发送天线端口数中的至少一项。
在一些实施例中，网络设备为终端配置码本参数信息后，则终端根据配置的码本参数信息确定信道状态信息指示的参数，进而向网络设备发送信道状态信息。
本申请实施例提供的方案中，信道状态信息指示的参数包括多种情况，扩展了指示参数的方式，进而提高了指示参数的多样性。
在图7所示的实施例的基础上，网络设备会为通过配置信息为终端配置码本参数，网络设备向终端发送配置信息，配置信息用于配置码本参数信息，码本参数信息用于供终端确定信道状态信息。
在本申请实施例中，网络设备向终端发送配置信息，通过该配置信息为终端配置码本参数信息，后续终端即可基于码本参数信息向网络设备发送信道状态信息。
在一些实施例中，网络设备向终端发送配置信息之前，还会先确定码本结构，以便于基于该码本结构为终端配置与该码本结构匹配的码本参数信息。
可选地，终端确定码本结构，再通过指示信息向网络设备指示确定的码本结构。
其中，终端向网络设备发送第一指示信息，第一指示信息指示采用的码本结构。
可选地，网络设备确定码本结构，网络设备再通过指示信息向终端指示码本结构。
其中，终端接收网络设备发送的第二指示信息，第二指示信息指示采用的码本结构。
需要说明的是，本申请实施例是以指示信息指示码本结构为例进行说明。在另一实施例中，网络设备与终端之间的码本结构由协议约定，网络设备直接为终端配置约定好的码本结构对应的码本参数信息即可。
本申请实施例提供的方案中，网络设备确定码本结构后，再根据码本结构为终端配置码本参数信息，提高了网络设备配置码本参数信息的准确性。
图8示出了本申请一个示例性实施例提供的一种基于码本的预编码确定装置的框图，参见图8，该装置包括：
确定模块801，用于基于至少一个CSI-RS资源，确定每个CSI-RS资源对应的信道信息；
发送模块802，用于根据确定的每个CSI-RS资源对应的信道信息以及码本参数信息，向网络设备发送信道状态信息，信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，端口组包括CSI-RS资源对应的多个CSI-RS端口；
信道状态信息用于基于码本参数信息对应的码本结构确定终端的预编码。
在一些实施例中，信道状态信息包括以下至少一种信息：
N个空域基向量指示信息或N个端口选择指示信息，且N与CSI-RS资源的数量相同，或者与端口组的数量相同，N为大于1的正整数；
一个组合系数指示信息，组合系数指示信息对应多个CSI-RS资源，或者对应一个CSI-RS资源中的多个端口组；
一个频域基向量指示信息，频域基向量指示信息对应多个CSI-RS资源，或者对应一个CSI-RS资源中的多个端口组。
在一些实施例中，信道状态信息包括以下至少一种信息：
G个空域基向量指示信息或G个端口选择指示信息；
G个组合系数指示信息；
G个频域基向量指示信息；
其中，且G与多个CSI-RS资源的CSI-RS资源组的组数相同，CSI-RS资源组包括至少一个CSI-RS资源，或者G与一个CSI-RS资源中的多个端口组的第一分组的组数相同，第一分组包括至少一个端口组，G为大于1的正整数。
在一些实施例中，信道状态信息包括以下至少一种信息：
一个空域基向量指示信息或一个端口选择指示信息，空域基向量指示信息或端口选择指示信息对应多个CSI-RS资源，或者对应一个CSI-RS资源中的多个端口组；
一个组合系数指示信息，组合系数指示信息对应多个CSI-RS资源，或者对应一个CSI-RS资源中的多个端口组；
一个频域基向量指示信息，频域基向量指示信息对应多个CSI-RS资源，或者对应一个CSI-RS资源中的多个端口组
在一些实施例中，组合系数指示信息包括非零系数信息和非零系数位置信息，非零系数信息指示组合系数指示信息中的非零系数，非零系数位置信息指示非零系数在组合系数指示信息中的位置。
在一些实施例中，确定模块801，用于根据每个CSI-RS资源对应的信道信息或有效信道信息以及码本参数信息，确定空域基向量指示信息、组合系数指示 信息和频域基向量指示信息；
发送模块，还用于向网络设备发送包括空域基向量指示信息或所述端口选择指示信息、组合系数指示信息和频域基向量指示信息的信道状态信息。
在一些实施例中，参见图9，装置还包括：
接收模块803，用于接收网络设备发送的配置信息，配置信息用于配置码本参数信息，码本参数信息用于供终端确定信道状态信息。
在一些实施例中，发送模块802，还用于：
向网络设备发送第一指示信息，第一指示信息指示采用的码本结构；
或者，
接收网络设备发送的第二指示信息，第二指示信息指示采用的码本结构。
在一些实施例中，CSI-RS资源为CMR资源。
在一些实施例中，不同的CMR资源属于相同的CSI-RS资源集，或者，不同的CMR资源属于不同的CSI-RS资源集。
在一些实施例中，多个CSI-RS资源中的每个CSI-RS资源对应一个传输接收节点TRP，至少两个TRP用于相干传输CJT；
或者，
一个CSI-RS资源中多个端口组中的每个端口组对应一个TRP，至少两个TRP用于CJT。
需要说明的是，上述实施例提供的装置，在实现其功能时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将设备的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的装置与方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
图10示出了本申请一个示例性实施例提供的一种基于码本的预编码确定装置的框图，参见图10，该装置包括：
接收模块1001，用于接收终端发送的信道状态信息，信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，端口组包括CSI-RS资源对应的多个CSI-RS端口，信道状态信息由终端基于至少一个CSI-RS资源中每个CSI-RS资源对应的信道信息以及码本参数信息确定；
确定模块1002，用于根据信道状态信息以及码本参数信息对应的码本结构，确定终端的预编码。
在一些实施例中，信道状态信息包括以下至少一种信息：
N个空域基向量指示信息或N个端口选择指示信息，且N与CSI-RS资源的数量相同，或者与端口组的数量相同，N为大于1的正整数；
一个组合系数指示信息，组合系数指示信息对应多个CSI-RS资源，或者对应一个CSI-RS资源中的多个端口组；
一个频域基向量指示信息，频域基向量指示信息对应多个CSI-RS资源，或 者对应一个CSI-RS资源中的多个端口组。
在一些实施例中，码本结构采用以下公式表示：
Figure PCTCN2022089672-appb-000250
或
Figure PCTCN2022089672-appb-000251
Figure PCTCN2022089672-appb-000252
其中，W表示码本结构，N表示CSI-RS资源的个数或者端口组的个数，N t表示发送天线端口数，P为CSI-RS端口数，L i表示第i∈{1,…,N}个CSI-RS资源对应的空域基向量指示信息或CSI-RS端口的个数，或者第i∈{1,…,N}个端口组对应的空域基向量指示信息或CSI-RS端口的个数，M表示第i个CSI-RS资源对应的频域基向量的个数，或者第i个端口组对应的频域基向量的个数，N 3表示预编码矩阵指示PMI子带的个数。W 1,i表示对应第i个CSI-RS资源的由L i个空域基向量或用于端口选择的单位基向量组成的矩阵，或者，对应第i个端口组的由L i个空域基向量或用于端口选择的单位基向量组成的矩阵，
Figure PCTCN2022089672-appb-000253
表示组合系数指示信息组成的矩阵，W f表示由M个频域基向量组成的矩阵，H为共轭转置，
Figure PCTCN2022089672-appb-000254
表示维度为X行Y列的复数矩阵。
在一些实施例中，信道状态信息包括以下至少一种信息：
G个空域基向量指示信息或G个端口选择指示信息；
G个组合系数指示信息；
G个频域基向量指示信息；
其中，且G与多个CSI-RS资源的CSI-RS资源组的组数相同，CSI-RS资源组包括至少一个CSI-RS资源，或者G与一个CSI-RS资源中的多个端口组的第一分组的组数相同，第一分组包括至少一个端口组，G为大于1的正整数。
在一些实施例中，所述码本结构采用以下公式表示：
Figure PCTCN2022089672-appb-000255
其中，W表示所述码本结构，W 1,g表示第g∈{1,…,G}组内的CSI-RS资源对应的空域基向量或用于端口选择的单位基向量组成的矩阵，或者，表示第G组内的端口组对应的由第G组内端口组对应的空域基向量或用于端口选择的单位基向量组成的矩阵，N g表示第g组内的CSI-RS资源的个数或端口组的个数，N t表示发送天线端口数，W f,g表示第g组内的CSI-RS资源对应的M g个频域基向量组成的矩阵，或者，表示第g组内的端口组对应的M g个频域基向量组成的矩阵，M g表示第g组所选频域基向量的个数，
Figure PCTCN2022089672-appb-000256
表示第g组内的CSI-RS资源对应的组合系数组成的矩阵，或者，表示第g组内的端口组对应的组合系数组成的矩阵，L g表示第g组所选的空域基向量或CSI-RS端口的个数，G表示与所述CSI-RS资源的CSI-RS资源组的组数相同，或者表示与所述端口组的第一分组的组数相同，G为大于1的正整数，N 3表示PMI的子带个数，H为共轭转置，
Figure PCTCN2022089672-appb-000257
表示维度为X行Y列的复数矩阵。
在一些实施例中，信道状态信息包括以下至少一种信息：
一个空域基向量指示信息，空域基向量指示信息对应多个CSI-RS资源，或者对应一个CSI-RS资源中的多个端口组；
一个组合系数指示信息，组合系数指示信息对应多个CSI-RS资源，或者对应一个CSI-RS资源中的多个端口组；
一个频域基向量指示信息，频域基向量指示信息对应多个CSI-RS资源，或者对应一个CSI-RS资源中的多个端口组。
在一些实施例中，码本结构采用以下公式表示：
Figure PCTCN2022089672-appb-000258
或
Figure PCTCN2022089672-appb-000259
其中，W表示码本结构，N表示CSI-RS资源的个数，或者表示端口组的个数，N t表示发送天线端口数，P为CSI-RS端口数，L表示CSI-RS资源对应的空域基向量指示信息或CSI-RS端口的个数，或者表示端口组对应的空域基向量指示信息或CSI-RS端口的个数，M表示CSI-RS资源对应的频域基向量的个数，或者表示端口组对应的频域基向量的个数，N 3表示预编码矩阵指示PMI子带的个数。W 1表示CSI-RS资源的L个空域基向量或用于端口选择的单位基向量组成的矩阵，或者表示端口组的由L个空域基向量或用于端口选择的单位基向量组成的矩阵，
Figure PCTCN2022089672-appb-000260
表示组合系数指示信息组成的矩阵，W f表示由M个频域基向量组成的矩阵，H为共轭转置，
Figure PCTCN2022089672-appb-000261
表示维度为X行Y列的复数矩阵。
在一些实施例中，组合系数指示信息包括非零系数信息和非零系数位置信息，非零系数信息指示组合系数指示信息中的非零系数，非零系数位置信息指示非零系数在组合系数指示信息中的位置。
在一些实施例中，接收模块1001，还用于接收终端发送的包括空域基向量指示信息、组合系数指示信息和频域基向量指示信息的信道状态信息；
空域基向量指示信息或所述端口选择指示信息、组合系数指示信息和频域基向量指示信息由终端根据每个CSI-RS资源对应的信道信息或有效信道信息以及码本参数信息确定。
在一些实施例中，参见图11，装置还包括：
发送模块1003，用于向终端发送配置信息，配置信息用于配置码本参数信息，码本参数信息用于供终端确定信道状态信息。
在一些实施例中，接收模块1001，还用于：
接收终端发送的第一指示信息，第一指示信息指示采用的码本结构；
或者，向终端发送第二指示信息，第二指示信息指示采用的码本结构。
在一些实施例中，CSI-RS资源为CMR资源。
在一些实施例中，不同的CMR资源属于相同的CSI-RS资源集，或者，不同的CMR资源属于不同的CSI-RS资源集。
在一些实施例中，多个CSI-RS资源中的每个CSI-RS资源对应一个TRP，至少两个TRP用于CJT；
或者，
一个CSI-RS资源中多个端口组中的每个端口组对应一个TRP，至少两个 TRP用于CJT。
需要说明的是，上述实施例提供的装置，在实现其功能时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将设备的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的装置与装置实施例属于同一构思，其具体实现过程详见装置实施例，这里不再赘述。
图12示出了本申请一个示例性实施例提供的通信设备的结构示意图，该通信设备包括：处理器1201、接收器1202、发射器1203、存储器1204和总线1205。
处理器1201包括一个或者一个以上处理核心，处理器1201通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
接收器1202和发射器1203可以实现为一个通信组件，该通信组件可以是一块通信芯片。
存储器1204通过总线1205与处理器1201相连。
存储器1204可用于存储至少一个程序代码，处理器1201用于执行该至少一个程序代码，以实现上述方法实施例中的各个步骤。
此外，通信设备可以为终端或网络设备。存储器1204可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，易失性或非易失性存储设备包括但不限于：磁盘或光盘，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，静态随时存取存储器(SRAM)，只读存储器(ROM)，磁存储器，快闪存储器，可编程只读存储器(PROM)。
在示例性实施例中，还提供了一种计算机可读存储介质，所述可读存储介质中存储有可执行程序代码，所述可执行程序代码由处理器加载并执行以实现上述各个方法实施例提供的由通信设备执行的基于码本的预编码确定方法。
在示例性实施例中，提供了一种芯片，所述芯片包括可编程逻辑电路和/或程序指令，当所述芯片在终端或网络设备上运行时，用于实现如各个方法实施例提供的基于码本的预编码确定方法。
在示例性实施例中，提供了计算机程序产品，当所述计算机程序产品被终端或网络设备的处理器执行时，其用于实现上述各个方法实施例提供的基于码本的预编码确定方法。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (30)

  1. 一种基于码本的预编码确定方法，其特征在于，所述方法由终端执行，所述方法包括：
    基于至少一个信道状态信息参考信号CSI-RS资源，确定每个CSI-RS资源对应的信道信息；
    根据确定的所述每个CSI-RS资源对应的信道信息以及码本参数信息，向网络设备发送信道状态信息，所述信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，所述信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，所述端口组包括所述CSI-RS资源对应的多个CSI-RS端口；
    所述信道状态信息用于基于所述码本参数信息对应的码本结构确定所述终端的预编码。
  2. 根据权利要求1所述的方法，其特征在于，所述信道状态信息包括以下至少一种信息：
    N个空域基向量指示信息或N个端口选择指示信息，且N与所述CSI-RS资源的数量相同，或者与所述端口组的数量相同，N为大于1的正整数；
    一个组合系数指示信息，所述组合系数指示信息对应所述多个CSI-RS资源，或者对应所述一个CSI-RS资源中的所述多个端口组；
    一个频域基向量指示信息，所述频域基向量指示信息对应所述多个CSI-RS资源，或者对应所述一个CSI-RS资源中的所述多个端口组。
  3. 根据权利要求1所述的方法，其特征在于，所述信道状态信息包括以下至少一种信息：
    G个空域基向量指示信息或G个端口选择指示信息；
    G个组合系数指示信息；
    G个频域基向量指示信息；
    其中，且G与所述多个CSI-RS资源的CSI-RS资源组的组数相同，所述CSI-RS资源组包括至少一个CSI-RS资源，或者G与所述一个CSI-RS资源中的所述多个端口组的第一分组的组数相同，所述第一分组包括至少一个端口组，G为大于1的正整数。
  4. 根据权利要求1所述的方法，其特征在于，所述信道状态信息包括以下至少一种信息：
    一个空域基向量指示信息或一个端口选择指示信息，所述空域基向量指示信息或所述端口选择指示信息对应所述多个CSI-RS资源，或者对应所述一个CSI-RS资源中的所述多个端口组；
    一个组合系数指示信息，所述组合系数指示信息对应所述多个CSI-RS资源， 或者对应所述一个CSI-RS资源中的所述多个端口组；
    一个频域基向量指示信息，所述频域基向量指示信息对应所述多个CSI-RS资源，或者对应所述一个CSI-RS资源中的所述多个端口组。
  5. 根据权利要求2至4任一所述的方法，其特征在于，所述组合系数指示信息包括非零系数信息和非零系数位置信息，所述非零系数信息指示所述组合系数指示信息中的非零系数，所述非零系数位置信息指示非零系数在所述组合系数指示信息中的位置。
  6. 根据权利要求2至5任一所述的方法，其特征在于，所述根据确定的所述每个CSI-RS资源对应的信道信息以及码本参数信息，向网络设备发送信道状态信息，包括：
    根据所述每个CSI-RS资源对应的信道信息或有效信道信息以及所述码本参数信息，确定所述空域基向量指示信息或所述端口选择指示信息、所述组合系数指示信息和所述频域基向量指示信息；
    向所述网络设备发送包括所述空域基向量指示信息或所述端口选择指示信息、所述组合系数指示信息和所述频域基向量指示信息的所述信道状态信息。
  7. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    接收所述网络设备发送的配置信息，所述配置信息用于配置所述码本参数信息，所述码本参数信息用于供所述终端确定所述信道状态信息。
  8. 根据权利要求7所述的方法，其特征在于，所述方法还包括：
    向所述网络设备发送第一指示信息，所述第一指示信息指示采用的码本结构；
    或者，
    接收所述网络设备发送的第二指示信息，所述第二指示信息指示采用的码本结构。
  9. 根据权利要求1所述的方法，其特征在于，所述CSI-RS资源为信道测量资源CMR资源。
  10. 根据权利要求9所述的方法，其特征在于，不同的所述CMR资源属于相同的CSI-RS资源集，或者，不同的所述CMR资源属于不同的CSI-RS资源集。
  11. 根据权利要求1所述的方法，其特征在于，所述多个CSI-RS资源中的每个CSI-RS资源对应一个传输接收节点TRP，至少两个TRP用于相干传输CJT；
    或者，
    所述一个CSI-RS资源中多个端口组中的每个端口组对应一个TRP，至少两 个TRP用于CJT。
  12. 一种基于码本的预编码确定方法，其特征在于，所述方法由网络设备执行，所述方法包括：
    接收终端发送的信道状态信息，所述信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，所述信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，所述端口组包括所述CSI-RS资源对应的多个CSI-RS端口，所述信道状态信息由所述终端基于至少一个CSI-RS资源中每个CSI-RS资源对应的信道信息以及码本参数信息确定；
    根据所述信道状态信息以及所述码本参数信息对应的码本结构，确定所述终端的预编码。
  13. 根据权利要求12所述的方法，其特征在于，所述信道状态信息包括以下至少一种信息：
    N个空域基向量指示信息或N个端口选择指示信息，且N与所述CSI-RS资源的数量相同，或者与所述端口组的数量相同，N为大于1的正整数；
    一个组合系数指示信息，所述组合系数指示信息对应所述多个CSI-RS资源，或者对应所述一个CSI-RS资源中的所述多个端口组；
    一个频域基向量指示信息，所述频域基向量指示信息对应所述多个CSI-RS资源，或者对应所述一个CSI-RS资源中的所述多个端口组。
  14. 根据权利要求13所述的方法，其特征在于，所述码本结构采用以下公式表示：
    Figure PCTCN2022089672-appb-100001
    或
    Figure PCTCN2022089672-appb-100002
    Figure PCTCN2022089672-appb-100003
    其中，W表示所述码本结构，N表示所述CSI-RS资源的个数或者所述端口组的个数，N t表示发送天线端口数，P为CSI-RS端口数，L i表示第i∈{1,…,N}个CSI-RS资源对应的空域基向量或CSI-RS端口的个数，或者第i∈{1,…,N}个端口组对应的空域基向量或CSI-RS端口的个数，M表示第i个CSI-RS资源对应的频域基向量的个数，或者第i个端口组对应的频域基向量的个数，N 3表示预编码矩阵指示PMI子带的个数，W 1,i表示对应第i个CSI-RS资源的由L i个空域基向量或用于端口选择的单位基向量组成的矩阵，或者，对应第i个端口组的由L i个空域基向量或用于端口选择的单位基向量组成的矩阵，
    Figure PCTCN2022089672-appb-100004
    表示组合系数指示信息组成的矩阵，W f表示由M个频域基向量组成的矩阵，H为共轭转置，
    Figure PCTCN2022089672-appb-100005
    表示维度为X行Y列的复数矩阵。
  15. 根据权利要求12所述的方法，其特征在于，所述信道状态信息包括以下 至少一种信息：
    G个空域基向量指示信息或G个端口选择指示信息；
    G个组合系数指示信息；
    G个频域基向量指示信息；
    其中，且G与所述多个CSI-RS资源的CSI-RS资源组的组数相同，所述CSI-RS资源组包括至少一个CSI-RS资源，或者G与所述一个CSI-RS资源中的所述多个端口组的第一分组的组数相同，所述第一分组包括至少一个端口组，G为大于1的正整数。
  16. 根据权利要求15所述的方法，其特征在于，所述码本结构采用以下公式表示：
    Figure PCTCN2022089672-appb-100006
    其中，W表示所述码本结构，W 1,g表示第g∈{1,…,G}组内的CSI-RS资源对应的空域基向量或用于端口选择的单位基向量组成的矩阵，或者，表示第G组内的端口组对应的由第G组内端口组对应的空域基向量或用于端口选择的单位基向量组成的矩阵，N g表示第g组内的CSI-RS资源的个数或端口组的个数，N t表示发送天线端口数，W f,g表示第g组内的CSI-RS资源对应的M g个频域基向量组成的矩阵，或者，表示第g组内的端口组对应的M g个频域基向量组成的矩阵，M g表示第g组所选频域基向量的个数，
    Figure PCTCN2022089672-appb-100007
    表示第g组内的CSI-RS资源对应的组合系数组成的矩阵，或者，表示第g组内的端口组对应的组合系数组成的矩阵，L g表示第g组所选的空域基向量或CSI-RS端口的个数，G表示与所述CSI-RS资源的CSI-RS资源组的组数相同，或者表示与所述端口组的第一分组的组数相同，G为大于1的正整数，N 3表示PMI的子带个数，H为共轭转置，
    Figure PCTCN2022089672-appb-100008
    表示维度为X行Y列的复数矩阵。
  17. 根据权利要求12所述的方法，其特征在于，所述信道状态信息包括以下至少一种信息：
    一个空域基向量指示信息，所述空域基向量指示信息对应所述多个CSI-RS资源，或者对应所述一个CSI-RS资源中的所述多个端口组；
    一个组合系数指示信息，所述组合系数指示信息对应所述多个CSI-RS资源，或者对应所述一个CSI-RS资源中的所述多个端口组；
    一个频域基向量指示信息，所述频域基向量指示信息对应所述多个CSI-RS资源，或者对应所述一个CSI-RS资源中的所述多个端口组。
  18. 根据权利要求17所述的方法，其特征在于，所述码本结构采用以下公式表示：
    Figure PCTCN2022089672-appb-100009
    或
    Figure PCTCN2022089672-appb-100010
    其中，W表示所述码本结构，N表示所述CSI-RS资源的个数，或者表示所述端口组的个数，N t表示发送天线端口数，P为CSI-RS端口数，L表示CSI-RS资源对应的空域基向量或CSI-RS端口的个数，或者表示端口组对应的空域基向量或CSI-RS端口的个数，M表示CSI-RS资源对应的频域基向量的个数，或者表示端口组对应的频域基向量的个数，N 3表示预编码矩阵指示PMI子带的个数，W 1表示CSI-RS资源的L个空域基向量或用于端口选择的单位基向量组成的矩阵，或者表示端口组的由L个空域基向量或用于端口选择的单位基向量组成的矩阵，
    Figure PCTCN2022089672-appb-100011
    表示组合系数指示信息组成的矩阵，W f表示由M个频域基向量组成的矩阵，H为共轭转置，
    Figure PCTCN2022089672-appb-100012
    表示维度为X行Y列的复数矩阵。
  19. 根据权利要求13至18中任一所述的方法，其特征在于，所述组合系数指示信息包括非零系数信息和非零系数位置信息，所述非零系数信息指示所述组合系数指示信息中的非零系数，所述非零系数位置信息指示非零系数在所述组合系数指示信息中的位置。
  20. 根据权利要求13至19任一所述的方法，其特征在于，所述接收终端发送的信道状态信息，包括：
    接收所述终端发送的包括所述空域基向量指示信息或所述端口选择指示信息、所述组合系数指示信息和所述频域基向量指示信息的所述信道状态信息；
    所述空域基向量指示信息或所述端口选择指示信息、所述组合系数指示信息和所述频域基向量指示信息由所述终端根据所述每个CSI-RS资源对应的信道信息或有效信道信息以及所述码本参数信息确定。
  21. 根据权利要求12所述的方法，其特征在于，所述方法还包括：
    向所述终端发送配置信息，所述配置信息用于配置所述码本参数信息，所述码本参数信息用于供所述终端确定所述信道状态信息。
  22. 根据权利要求21所述的方法，其特征在于，所述方法还包括：
    接收所述终端发送的第一指示信息，所述第一指示信息指示采用的码本结构；
    或者，向所述终端发送第二指示信息，所述第二指示信息指示采用的码本结构。
  23. 根据权利要求12所述的方法，其特征在于，所述CSI-RS资源为信道测量资源CMR资源。
  24. 根据权利要求23所述的方法，其特征在于，不同的所述CMR资源属于相同的CSI-RS资源集，或者，不同的所述CMR资源属于不同的CSI-RS资源集。
  25. 根据权利要求12至24任一所述的方法，其特征在于，所述多个CSI-RS资源中的每个CSI-RS资源对应一个TRP，至少两个TRP用于相干传输CJT；
    或者，
    所述一个CSI-RS资源中多个端口组中的每个端口组对应一个TRP，至少两个TRP用于CJT。
  26. 一种基于码本的预编码确定装置，其特征在于，所述装置包括：
    确定模块，用于基于至少一个CSI-RS资源，确定每个CSI-RS资源对应的信道信息；
    发送模块，用于根据确定的所述每个CSI-RS资源对应的信道信息以及码本参数信息，向网络设备发送信道状态信息，所述信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，所述信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，所述端口组包括所述CSI-RS资源对应的多个CSI-RS端口；所述信道状态信息用于基于所述码本参数信息对应的码本结构确定所述终端的预编码。
  27. 一种基于码本的预编码确定装置，其特征在于，所述装置包括：
    接收模块，用于接收终端发送的信道状态信息，所述信道状态信息包括多个CSI-RS资源对应的指示信息以及每个CSI-RS资源对应的指示信息，或者，所述信道状态信息包括一个CSI-RS资源中多个端口组对应的指示信息以及每个端口组对应的指示信息，所述端口组包括所述CSI-RS资源对应的多个CSI-RS端口，所述信道状态信息由所述终端基于至少一个CSI-RS资源中每个CSI-RS资源对应的信道信息以及码本参数信息确定；
    确定模块，用于根据所述信道状态信息以及所述码本参数信息对应的码本结构，确定所述终端的预编码。
  28. 一种终端，其特征在于，所述终端包括：
    处理器；
    与所述处理器相连的收发器；
    其中，所述处理器被配置为加载并执行可执行指令以实现如权利要求1至11任一所述的基于码本的预编码确定方法。
  29. 一种网络设备，其特征在于，所述网络设备包括：
    处理器；
    与所述处理器相连的收发器；
    其中，所述处理器被配置为加载并执行可执行指令以实现如权利要求12至25任一所述的基于码本的预编码确定方法。
  30. 一种计算机可读存储介质，所述可读存储介质中存储有可执行程序代码，所述可执行程序代码由处理器加载并执行以实现如权利要求1至25任一所述的基于码本的预编码确定方法。
PCT/CN2022/089672 2022-04-27 2022-04-27 基于码本的预编码确定方法、装置、设备及存储介质 WO2023206174A1 (zh)

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