A method and device used in a node for wireless communication

Abstract

The present application discloses a method and apparatus in a node used for wireless communication. The first node receives a first information block and a second information block, and sends a third information block. The first information block indicates a first function; the second information block indicates whether a target reference signal resource is associated with the first function; the third information block indicates a first compressed CSI, and the first pre-compression CSI is used as an input of the first function to generate the first compressed CSI. The above method can flexibly configure the relationship between the reference signal and the AI ​​algorithm / parameters, select the optimal AI algorithm / parameters to compress / decompress the CSI based on a reference signal, and optimize the performance of CSI feedback.

Description

Technical Field

[0001] The present application relates to a transmission method and device in a wireless communication system, and in particular to a transmission method and device for wireless signals in a wireless communication system supporting a cellular network. Background Art

[0002] Multi-antenna technology is a key technology in 3GPP (3rd Generation Partner Project) LTE (Long-term Evolution) system and NR (New Radio) system. Additional spatial degrees of freedom are obtained by configuring multiple antennas at communication nodes, such as base stations or UE (User Equipment). Multiple antennas form a beam pointing in a specific direction through multi-antenna processing such as precoding and / or beamforming to improve communication quality. In downlink multi-antenna transmission, UE (User Equipment) usually feeds back CSI (Channel State Information) to assist the base station in performing precoding and / or beamforming. As the number of antennas increases, the overhead of CSI feedback also increases. Various enhanced multi-antenna technologies, such as the application of multi-user MIMO, have put forward higher requirements on feedback accuracy, thereby further increasing the feedback overhead.

[0003] In the 3GPP RAN#88e meeting and 3GPP R(release)18workshop, the application of ML(MachineLearing) / AI(Artificial Intelligence) in the physical layer of wireless communication systems has received extensive attention and discussion. Using ML / AI to compress CSI to simultaneously solve the accuracy and overhead of CSI feedback is generally considered to be one of the important applications of ML / AI in the physical layer. Summary of the invention

[0004] In the AI ​​algorithm, the training process is very important and directly affects the performance of the AI ​​algorithm. The applicant found through research that reference signals beamformed by different beams have different requirements for the AI ​​training process. Using the same set of AI parameters obtained from training to compress the CSI obtained based on different reference signals will result in different performance. How to adapt between the reference signal and the AI ​​algorithm / parameters to optimize the CSI feedback performance is a problem that needs to be solved.

[0005] In response to the above problems, the present application discloses a solution. It should be noted that although the above description uses cellular networks as an example, the present application is also applicable to other scenarios such as V2X (Vehicle-to-Everything) and sidelink transmission, and achieves similar technical effects in cellular network scenarios. In addition, the use of a unified solution for different scenarios (including but not limited to cellular networks, V2X, and sidelink transmission) also helps to reduce hardware complexity and cost. In the absence of conflict, the embodiments in the first node of the present application and the features in the embodiments can be applied to the second node, and vice versa. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be arbitrarily combined with each other.

[0006] As an embodiment, the interpretation of the terminology in this application refers to the definition of the TS36 series of specification protocols of 3GPP.

[0007] As an example, the interpretation of the terms in the present application refers to the definitions of the TS38 series of specification protocols of 3GPP.

[0008] As an example, the interpretation of the terms in the present application refers to the definitions of the TS37 series of specification protocols of 3GPP.

[0009] As an embodiment, the interpretation of the terms in this application refers to the definition of the standard protocol of IEEE (Institute of Electrical and Electronics Engineers).

[0010] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0011] receiving a first information block, the first information block indicating a first function;

[0012] receiving a second information block, the second information block indicating whether a target reference signal resource is associated with the first function;

[0013] A third information block is sent, where the third information block indicates a first compressed CSI, and a first pre-compression CSI is used as an input of the first function to generate the first compressed CSI.

[0014] As an embodiment, the problem to be solved by the present application includes: how to adapt between the reference signal and the AI ​​algorithm / parameters to optimize the CSI feedback performance.

[0015] As an embodiment, the characteristics of the above method include: the first function includes an AI algorithm and a set of parameters used in the AI ​​algorithm obtained by training; the second information block indicates whether the CSI obtained for the target reference signal resource is compressed by the first function.

[0016] As an embodiment, the benefits of the above method include: flexibly configuring the relationship between the reference signal and the AI ​​algorithm / parameters, selecting the optimal AI algorithm / parameters to compress the CSI based on a certain reference signal, and optimizing the performance of CSI feedback.

[0017] According to one aspect of the present application, it is characterized by comprising:

[0018] Sending a fourth information block, where the fourth information block indicates a second compressed CSI, and the second pre-compression CSI is used as an input of the first enhancement function to generate the second compressed CSI;

[0019] The first function is used to generate the first enhancement function; and the second information block indicates whether the target reference signal resource is associated with the first enhancement function.

[0020] As an embodiment, the benefits of the above method include: using AI algorithms of different complexity to compress / decompress CSI based on different reference signals, thereby better balancing the complexity and performance of the algorithm / training.

[0021] According to one aspect of the present application, it is characterized in that the second information block indicates the first enhancement function.

[0022] According to one aspect of the present application, it is characterized by comprising:

[0023] Sending a reference signal in a first reference signal resource pool, wherein the first reference signal resource pool includes at least one reference signal resource;

[0024] The receiving behavior in the first reference signal resource pool is used by a target receiver of the first reference signal resource pool to determine the first function.

[0025] According to one aspect of the present application, it is characterized in that the second information block includes a first transmission configuration state, and the first transmission configuration state implicitly indicates whether the target reference signal resource is associated with the first function.

[0026] As an embodiment, the benefits of the above method include: indicating the relationship between the reference signal and the AI ​​algorithm / parameters in an implicit manner, thereby reducing signaling overhead.

[0027] According to one aspect of the present application, it is characterized by comprising:

[0028] A fifth information block is sent, wherein the fifth information block indicates whether the target reference signal resource is suitable for being associated with the first function.

[0029] As an embodiment, the benefits of the above method include: allowing the UE to adjust the correspondence between the reference signal indicated by the base station and the AI ​​algorithm / parameters, further optimizing the matching degree between the reference signal and the AI ​​algorithm / parameters, thereby optimizing the performance of CSI feedback.

[0030] According to one aspect of the present application, it is characterized in that the first node is a user equipment.

[0031] According to one aspect of the present application, it is characterized in that the first node is a relay node.

[0032] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0033] sending a first information block, wherein the first information block indicates a first function;

[0034] sending a second information block, wherein the second information block indicates whether a target reference signal resource is associated with the first function;

[0035] A third information block is received, where the third information block indicates first compressed CSI, and first pre-compression CSI is used as an input of the first function to generate the first compressed CSI.

[0036] According to one aspect of the present application, it is characterized by comprising:

[0037] receiving a fourth information block, wherein the fourth information block indicates a second compressed CSI, and the second pre-compression CSI is used as an input of the first enhancement function to generate the second compressed CSI;

[0038] The first function is used to generate the first enhancement function; and the second information block indicates whether the target reference signal resource is associated with the first enhancement function.

[0039] According to one aspect of the present application, it is characterized in that the second information block indicates the first enhancement function.

[0040] According to one aspect of the present application, it is characterized by comprising:

[0041] receiving a reference signal in a first reference signal resource pool, wherein the first reference signal resource pool includes at least one reference signal resource;

[0042] The receiving behavior in the first reference signal resource pool is used by the second node to determine the first function.

[0043] According to one aspect of the present application, it is characterized in that the second information block includes a first transmission configuration state, and the first transmission configuration state implicitly indicates whether the target reference signal resource is associated with the first function.

[0044] According to one aspect of the present application, it is characterized by comprising:

[0045] A fifth information block is received, the fifth information block indicating whether the target reference signal resource is suitable for being associated to the first function.

[0046] According to one aspect of the present application, it is characterized in that the second node is a base station.

[0047] According to one aspect of the present application, it is characterized in that the second node is a user equipment.

[0048] According to one aspect of the present application, it is characterized in that the second node is a relay node.

[0049] The present application discloses a first node device used for wireless communication, characterized in that it includes:

[0050] A first receiver receives a first information block and a second information block, wherein the first information block indicates a first function, and the second information block indicates whether a target reference signal resource is associated with the first function;

[0051] The first transmitter sends a third information block, where the third information block indicates first compressed CSI, and the first pre-compression CSI is used as an input of the first function to generate the first compressed CSI.

[0052] The present application discloses a second node device used for wireless communication, characterized in that it includes:

[0053] A second transmitter sends a first information block and a second information block, wherein the first information block indicates a first function, and the second information block indicates whether a target reference signal resource is associated with the first function;

[0054] The second receiver receives a third information block, where the third information block indicates a first compressed CSI, and the first pre-compression CSI is used as an input of the first function to generate the first compressed CSI.

[0055] As an embodiment, compared with the traditional solution, this application has the following advantages:

[0056] The relationship between the reference signal and the AI ​​algorithm / parameters can be flexibly configured, and the optimal AI algorithm / parameters can be selected to compress / decompress the CSI based on a certain reference signal, thereby optimizing the performance of CSI feedback. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0058] Figure 1 A flowchart showing a first information block, a second information block and a third information block according to an embodiment of the present application is shown;

[0059] Figure 2 A schematic diagram of a network architecture according to an embodiment of the present application is shown;

[0060] Figure 3 A schematic diagram showing an embodiment of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0061] Figure 4 A schematic diagram showing a first communication device and a second communication device according to an embodiment of the present application is shown;

[0062] Figure 5 A flow chart showing transmission according to an embodiment of the present application is shown;

[0063] Figure 6 A schematic diagram of a first function according to an embodiment of the present application is shown;

[0064] Figure 7 A schematic diagram showing a second function according to an embodiment of the present application is shown;

[0065] Figure 8 A schematic diagram showing the relationship between the first pre-compression CSI, the first compressed CSI, the first function and the second function according to an embodiment of the present application;

[0066] Fig. 9 A schematic diagram showing a relationship between a second pre-compression CSI and a second compressed CSI according to an embodiment of the present application;

[0067] Fig.10 A schematic diagram of a first enhancement function according to an embodiment of the present application is shown;

[0068] Fig.11 A schematic diagram of a second enhancement function according to an embodiment of the present application is shown;

[0069] Fig.12 A schematic diagram showing the relationship between the second pre-compression CSI, the second compressed CSI, the first enhancement function, and the second enhancement function according to an embodiment of the present application;

[0070] Fig.13A schematic diagram showing a second information block indicating a first enhancement function according to an embodiment of the present application is shown;

[0071] Fig.14 A schematic diagram showing that a reception behavior in a first reference signal resource pool is used by a target receiver of the first reference signal resource pool to determine a first function according to an embodiment of the present application;

[0072] Fig.15 A schematic diagram showing whether a first transmission configuration state implicitly indicates whether a target reference signal resource is associated with a first function according to an embodiment of the present application;

[0073] Fig.16 A schematic diagram showing whether a fifth information block indicates whether a target reference signal resource is suitable for being associated with a first function according to an embodiment of the present application;

[0074] Fig.17 A structural block diagram of a processing device used in a first node device according to an embodiment of the present application is shown;

[0075] Fig.18 A structural block diagram of a processing device used in a second node device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0076] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily.

[0077] Example 1

[0078] Embodiment 1 illustrates a flowchart of a first information block, a second information block, and a third information block according to an embodiment of the present application, as shown in the attached Figure 1 As shown in the attached Figure 1 In the illustrated 100, each box represents a step. In particular, the order of the steps in the boxes does not represent a specific time sequence between the steps.

[0079] In Example 1, the first node in the present application receives a first information block in step 101, wherein the first information block indicates a first function; receives a second information block in step 102, wherein the second information block indicates whether a target reference signal resource is associated with the first function; and sends a third information block in step 103, wherein the third information block indicates a first compressed CSI, and the first pre-compression CSI is used as an input of the first function to generate the first compressed CSI.

[0080] As an embodiment, the first information block is carried by higher layer signaling.

[0081] As an embodiment, the first information block is carried by RRC (Radio Resource Control) signaling.

[0082] As an embodiment, the first information block is carried by a MAC CE (Medium Access Control layer Control Element).

[0083] As an embodiment, the first information block is carried by physical layer signaling.

[0084] As an embodiment, the first information block includes information in all or part of the fields in an IE (Information Element).

[0085] As an embodiment, the first information block is carried by layer 3 (L3) signaling.

[0086] As an embodiment, the channel occupied by the first information block includes PDSCH (Physical Downlink Shared CHannel).

[0087] As an embodiment, the channel occupied by the first information block includes PDCCH (Physical Downlink Control Channel).

[0088] As an embodiment, the channel occupied by the first information block includes DL-SCH (Downlink Shared Channel).

[0089] As an embodiment, the second information block is carried by higher layer signaling.

[0090] As an embodiment, the second information block is carried by RRC signaling.

[0091] As an embodiment, the second information block is carried by MAC CE.

[0092] As an embodiment, the second information block is carried by physical layer signaling.

[0093] As an embodiment, the second information block is carried jointly by RRC signaling and MAC CE.

[0094] As an embodiment, the second information block is carried jointly by RRC signaling and physical layer signaling.

[0095] As an embodiment, the second information block is carried by an IE.

[0096] As an embodiment, the name of the IE carrying the second information block includes "CSI-ReportConfig".

[0097] As an embodiment, the name of the IE carrying the second information block includes "CSI-ResourceConfig".

[0098] As an embodiment, the name of the IE carrying the second information block includes "CSI-MeasConfig".

[0099] As an embodiment, the name of the IE carrying the second information block includes "NZP-CSI-RS-Resource".

[0100] As an embodiment, the second information block is earlier than the first information block in the time domain.

[0101] As an embodiment, the second information block is later than the first information block in the time domain.

[0102] As an embodiment, the first information block and the second information block are carried by different fields of the same IE.

[0103] As an embodiment, the first information block and the second information block are carried by different IEs.

[0104] As an embodiment, the first information block and the second information block are carried by different signaling.

[0105] As an embodiment, the target reference signal resources include CSI-RS (Channel State Information-Reference Signal) resources.

[0106] As an embodiment, the target reference signal resource is a CSI-RS resource.

[0107] As an embodiment, the target reference signal resources include SS (Synchronisation Signal) / PBCH (physical broadcast channel) Block resources.

[0108] As an embodiment, the target reference signal resource is a CSI-RS resource or a SS / PBCH Block resource.

[0109] As an embodiment, the target reference signal resource includes an SRS (Sounding Reference Signal) resource.

[0110] As an embodiment, the target reference signal resource includes a DMRS (DeModulation Reference Signals) port.

[0111] As an embodiment, the target reference signal resource includes a PTRS (Phase-Tracking Reference Signal) port.

[0112] As an embodiment, the target reference signal resource includes at least one RS port.

[0113] As a sub-embodiment of the above embodiment, the RS port includes a CSI-RS port.

[0114] As a sub-embodiment of the above embodiment, the RS port includes an antenna port.

[0115] As a sub-embodiment of the above embodiment, the RS port includes at least one of a DMRS port, a PTRS port or an SRS port.

[0116] As an embodiment, the target reference signal resource is aperiodic.

[0117] As an embodiment, the target reference signal resource is semi-persistent.

[0118] As an embodiment, the target reference signal resource is periodic.

[0119] As an embodiment, the target reference signal resource appears earlier than the second information block in the time domain.

[0120] As an embodiment, the target reference signal resource appears in the time domain later than the second information block.

[0121] As an embodiment, the second information block indicates the target reference signal resource.

[0122] As an embodiment, the second information block indicates configuration information of the target reference signal resource.

[0123] As an embodiment, the configuration information of the target reference signal resources includes part or all of time domain resources, frequency domain resources, CDM (Code Division Multiplexing) type (cdm-type), CDM group, scrambling code, period, time slot offset, QCL (Quasi Co-Location) relationship, density, or number of RS ports.

[0124] As an embodiment, the second information block indicates an identifier of the target reference signal resource.

[0125] As an embodiment, the identifier of the target reference signal resource includes NZP-CSI-RS-ResourceId or SSB-Index.

[0126] As an embodiment, the second information block indicates that the target reference signal resource is associated with the first function.

[0127] As an embodiment, the second information block indicates that the target reference signal resource is not associated with the first function.

[0128] As an embodiment, the second information block indicates that measurement of the reference signal received in the target reference signal resource is not suitable for generating compressed CSI.

[0129] As an embodiment, the second information block indicates that measurement of the reference signal received in the target reference signal resource is not used to generate compressed CSI.

[0130] As an embodiment, the second information block indicates that the first node does not obtain channel measurement for generating compressed CSI based on the reference signal received in the target reference signal resource.

[0131] As an embodiment, the second information block explicitly indicates whether the target reference signal resource is associated with the first function.

[0132] As an embodiment, the second information block includes a first bit field, the first bit field includes at least one bit; the value of the first bit field indicates whether the target reference signal resource is associated with the first function.

[0133] As an embodiment, the second information block implicitly indicates whether the target reference signal resource is associated with the first function.

[0134] As an embodiment, the configuration information of the target reference signal resource implicitly indicates whether the target reference signal resource is associated with the first function.

[0135] As an embodiment, the time-frequency resources occupied by the target reference signal resource are used to determine whether the target reference signal resource is associated with the first function.

[0136] As an embodiment, at least one of the CDM type or the CDM group of the target reference signal resource is used to determine whether the target reference signal resource is associated with the first function.

[0137] As an embodiment, the QCL relationship of the target reference signal resource is used to determine whether the target reference signal resource is associated with the first function.

[0138] As an embodiment, the number of RS ports of the target reference signal resource is used to determine whether the target reference signal resource is associated with the first function.

[0139] As an embodiment, the first function is one of M1 functions, M1 is a positive integer greater than 1; the second information block indicates whether the target reference signal resource is associated with one of the M1 functions; when the second information block indicates that the target reference signal resource is associated with one of the M1 functions, the second information block indicates which function of the M1 functions the target reference signal resource is associated with.

[0140] As a sub-embodiment of the above embodiment, the M1 functions are respectively non-linear.

[0141] As a sub-embodiment of the above embodiment, any function among the M1 functions includes an encoder of a neural network for CSI compression.

[0142] As a sub-embodiment of the above embodiment, any two different functions among the M1 functions include at least one of the convolution kernel, convolution kernel size, number of convolution layers, convolution step size, pooling function, pooling kernel size, pooling kernel step size, pooling function parameters, activation function, activation function threshold, number of feature maps or weights between feature maps.

[0143] As an embodiment, when the second information block indicates that the target reference signal resource is associated with the first function, the second information block further indicates which RS ports of the target reference signal resource are associated with the first function.

[0144] As an embodiment, when the target reference signal resource is associated with the first function, all RS ports of the target reference signal resource are associated with the first function.

[0145] As an embodiment, when the target reference signal resource is associated with the first function, all RS ports or only part of RS ports of the target reference signal resource are associated with the first function.

[0146] As an embodiment, the phrase that the target reference signal resource is associated to the first function includes: a measurement of a reference signal received in the target reference signal resource is used as an input to the first function.

[0147] As an embodiment, the phrase that the target reference signal resource is associated with the first function includes: measurements of a reference signal received in the target reference signal resource are used to generate an input of the first function.

[0148] As an embodiment, the phrase that the target reference signal resource is associated with the first function includes: CSI obtained based on channel measurement of the reference signal received in the target reference signal resource is used as input of the first function.

[0149] As a sub-embodiment of the above embodiment, the CSI includes uncompressed CSI.

[0150] As an embodiment, the phrase that the target reference signal resource is associated with the first function includes: the first node obtains a channel measurement for calculating an input of the first function based on a reference signal received in the target reference signal resource.

[0151] As an embodiment, the phrase that the target reference signal resource is associated with the first function includes: the first function is used to compress the CSI obtained based on the channel measurement of the reference signal received in the target reference signal resource.

[0152] As an embodiment, the phrase that the target reference signal resource is associated with the first function includes: the first function is used to compress information of a channel experienced by a reference signal received in the target reference signal resource.

[0153] As an embodiment, the phrase that the target reference signal resource is associated with the first function includes: measurements of reference signals received in the target reference signal resource are not used to generate an input of the first function.

[0154] As an embodiment, the phrase that the target reference signal resource is not associated with the first function means that: CSI obtained based on channel measurement for the reference signal received in the target reference signal resource is not used as an input of the first function.

[0155] As a sub-embodiment of the above embodiment, the CSI includes uncompressed CSI.

[0156] As an embodiment, the phrase that the target reference signal resource is not associated with the first function means that the first node does not obtain channel measurement for calculating the input of the first function based on the reference signal received in the target reference signal resource.

[0157] As an embodiment, the phrase that the target reference signal resource is not associated with the first function means that the first function is not used to compress the CSI obtained based on the channel measurement of the reference signal received in the target reference signal resource.

[0158] As an embodiment, the phrase that the target reference signal resource is not associated with the first function means that the first function is not used to compress information of a channel experienced by a reference signal received in the target reference signal resource.

[0159] As an embodiment, if the target reference signal resource is not associated with the first function, the measurement of the reference signal received in the target reference signal resource is not used to generate the first pre-compression CSI.

[0160] As an embodiment, if the target reference signal resource is not associated with the first function, the first node does not obtain channel measurement used to calculate the first pre-compression CSI based on the reference signal received in the target reference signal resource.

[0161] As an embodiment, if only part of RS ports of the target reference signal resource are associated with the first function, the first node obtains channel measurements for calculating inputs of the first function based only on reference signals received on the part of RS ports.

[0162] As an embodiment, if only part of RS ports of the target reference signal resource are associated with the first function, the first function is only used to compress information of channels experienced by reference signals received on the part of RS ports.

[0163] As an embodiment, the third information block is carried by physical layer signaling.

[0164] As an embodiment, the third information block is carried by MAC CE signaling.

[0165] As an embodiment, the third information block includes UCI (Uplink Control Information, uplink control information).

[0166] As an embodiment, the third information block includes CSI (Channel State Information).

[0167] As an embodiment, the CSI refers to: Channel State Information.

[0168] As an embodiment, the CSI includes a channel matrix.

[0169] As an embodiment, the CSI includes information of a channel matrix.

[0170] As an embodiment, the CSI includes amplitude and phase information of elements in a channel matrix.

[0171] As an embodiment, the third information block includes the first compressed CSI.

[0172] As an embodiment, the second information block indicates that the target reference signal resource is associated with the first function, and the measurement of the reference signal received in the target reference signal resource is used to generate the first pre-compression CSI.

[0173] As an embodiment, the second information block indicates that the target reference signal resource is associated with the first function, and the first node obtains channel measurement for generating the first pre-compression CSI based on the reference signal received in the target reference signal resource.

[0174] As an embodiment, the first pre-compression CSI is independent of the measurement of the reference signal received in the target reference signal resource.

[0175] As an embodiment, the second information block indicates that the target reference signal resource is not associated with the first function, and the first pre-compression CSI is irrelevant to the measurement of the reference signal received in the target reference signal resource.

[0176] As an embodiment, the first pre-compression CSI is used by the first node as an input of the first function to generate the first compressed CSI.

[0177] As an embodiment, the first pre-compression CSI includes PMI (Precoding Matrix Indicator).

[0178] As an embodiment, the first pre-compression CSI includes one or more of CQI (Channel Quality Indicator), CRI (CSI-RS Resource Indicator) or RI (Rank Indicator).

[0179] As an embodiment, the first pre-compression CSI includes a channel matrix.

[0180] As an embodiment, the first pre-compression CSI includes amplitude and phase information of elements in a channel matrix.

[0181] As an embodiment, the first pre-compression CSI includes information of a channel matrix.

[0182] As an embodiment, the first compressed CSI includes PMI.

[0183] As an embodiment, the first compressed CSI includes one or more of CQI, CRI or RI.

[0184] As an embodiment, the first compressed CSI includes a matrix.

[0185] As an embodiment, the first compressed CSI includes a vector.

[0186] As an embodiment, the first compressed CSI includes information of a channel matrix.

[0187] As an embodiment, the first compressed CSI includes amplitude and phase information of elements in a channel matrix.

[0188] As an embodiment, the first pre-compression CSI includes a first matrix, the first compressed CSI includes a second matrix, and the product of the number of rows and the number of columns of the second matrix is ​​less than the product of the number of rows and the number of columns of the first matrix.

[0189] As a sub-embodiment of the above embodiment, the second matrix is ​​a vector.

[0190] As an embodiment, the first pre-compression CSI consists of Q1 bits, and the first compressed CSI consists of Q2 bits, Q1 and Q2 are respectively positive integers greater than 1, and Q1 is greater than Q2.

[0191] As an embodiment, the first function is non-linear.

[0192] As an embodiment, the input of the first function includes CSI.

[0193] As an embodiment, the input of the first function includes the result of channel measurement.

[0194] As an embodiment, the input of the first function includes a channel matrix.

[0195] As an embodiment, the input of the first function includes uncompressed CSI.

[0196] As an embodiment, the output of the first function includes compressed CSI.

[0197] As an embodiment, the load of any input of the first function is greater than the load of the output of the first function corresponding to the any input.

[0198] As an embodiment, the number of elements included in any one input of the first function is greater than the number of elements included in the output of the first function corresponding to the any one input.

[0199] As an embodiment, the first function includes a neural network.

[0200] As an embodiment, the first function includes a neural network for CSI compression.

[0201] As an embodiment, the first function includes an encoder of a neural network for CSI compression.

[0202] Example 2

[0203] Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in the attached Figure 2 shown.

[0204] Attached Figure 2The network architecture 200 of LTE (Long-Term Evolution), LTE-A (Long-Term Evolution Advanced) and future 5G systems is illustrated. The network architecture 200 of LTE, LTE-A and future 5G systems is called EPS (Evolved Packet System) 200. The 5GNR or LTE network architecture 200 may be referred to as 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable terminology. 5GS / EPS 200 may include one or more UEs (User Equipment) 201, a UE 241 communicating with UE 201 via a sidelink, NG-RAN (Next Generation Radio Access Network) 202, 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet service 230. 5GS / EPS 200 may be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. Figure 2As shown, 5GS / EPS200 provides packet switching services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks that provide circuit switching services. NG-RAN202 includes NR (New Radio) Node B (gNB) 203 and other gNBs204. gNB203 provides user and control plane protocol terminations toward UE201. gNB203 can be connected to other gNBs204 via an Xn interface (e.g., backhaul). gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a TRP (transmit receive point), or some other suitable term. gNB203 provides an access point to 5GC / EPC210 for UE201. Examples of UE 201 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband physical network devices, machine type communication devices, land vehicles, cars, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE 201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term. gNB203 is connected to 5GC / EPC210 via S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF213. MME / AMF / SMF211 is a control node that handles signaling between UE201 and 5GC / EPC210. ​​In general, MME / AMF / SMF211 provides bearer and connection management.All user IP (Internet Protocol) packets are transmitted through S-GW / UPF212, which is itself connected to P-GW / UPF213. P-GW provides UE IP address allocation and other functions. P-GW / UPF213 is connected to Internet service 230. Internet service 230 includes operator-corresponding Internet protocol services, which may specifically include Internet, Intranet, IMS (IP Multimedia Subsystem) and Packet switching services.

[0205] As an embodiment, the first node in the present application includes the UE201.

[0206] As an embodiment, the second node in the present application includes the gNB203.

[0207] As an embodiment, the wireless link between the UE201 and the gNB203 is a cellular network link.

[0208] As an embodiment, the sender of the first information block includes the gNB203.

[0209] As an embodiment, the receiver of the first information block includes the UE201.

[0210] As an embodiment, the sender of the second information block includes the gNB203.

[0211] As an embodiment, the receiver of the second information block includes the UE201.

[0212] As an embodiment, the sender of the third information block includes the UE201.

[0213] As an embodiment, the receiver of the third information block includes the gNB203.

[0214] As an embodiment, the UE201 supports CSI compression based on CNN (Conventional Neural Networks).

[0215] Example 3

[0216] Embodiment 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application, as shown in the attached figure. Figure 3 shown.

[0217] Embodiment 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to the present application, as shown in the attached Figure 3 shown. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3The radio protocol architecture of the control plane 300 between a first communication node device (UE, gNB or RSU in V2X) and a second communication node device (gNB, UE or RSU in V2X), or between two UEs is shown with three layers: Layer 1, Layer 2 and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to as PHY301 in this article. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the first communication node device and the second communication node device, or between two UEs. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets, and provides support for inter-zone mobility of the first communication node device between the second communication node device. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layer using RRC signaling between the second communication node device and the first communication node device. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture used for the first communication node device and the second communication node device in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead.The L2 layer 355 in the user plane 350 also includes a SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS flows and data radio bearers (DRBs) to support the diversity of services. Although not shown in the figure, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., an IP layer) terminated at the P-GW on the network side and an application layer terminated at the other end of the connection (e.g., a remote UE, a server, etc.).

[0218] As an example, Figure 3 The wireless protocol architecture in is applicable to the first node in this application.

[0219] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0220] As an embodiment, the first information block is generated in the MAC sublayer 302 or the MAC sublayer 352.

[0221] As an embodiment, the first information block is generated in the RRC sublayer 306.

[0222] As an embodiment, the second information block is generated in the MAC sublayer 302 or the MAC sublayer 352.

[0223] As an embodiment, the second information block is generated in the RRC sublayer 306.

[0224] As an embodiment, the third information block is generated by the PHY301 or the PHY351.

[0225] Example 4

[0226] Embodiment 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application, as shown in the attached figure. Figure 4 Attached Figure 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.

[0227] The first communication device 410 includes a controller / processor 475 , a memory 476 , a receive processor 470 , a transmit processor 416 , a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmitter / receiver 418 and an antenna 420 .

[0228] The second communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter / receiver 454 and an antenna 452.

[0229] In transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functionality of the L2 layer. In the DL, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and allocation of radio resources to the second communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the second communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 450, as well as constellation mapping based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing on the coded and modulated symbols to generate one or more parallel streams. The transmit processor 416 then maps each parallel stream to a subcarrier, multiplexes the modulated symbols with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs a transmit analog precoding / beamforming operation on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

[0230] In the transmission from the first communication device 410 to the second communication device 450, at the second communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receiving analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receiving analog precoding / beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiving processor 456, wherein the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 to any parallel stream destined for the second communication device 450. The symbols on each parallel stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 storing program codes and data. The memory 460 may be referred to as a computer-readable medium. In DL, the controller / processor 459 provides multiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transmission and logical channels to recover the upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing. The controller / processor 459 is also responsible for error detection using confirmation (ACK) and / or negative confirmation (NACK) protocols to support HARQ operations.

[0231] In the transmission from the second communication device 450 to the first communication device 410, at the second communication device 450, a data source 467 is used to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission function at the first communication device 410 described in DL, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the first communication device 410, and implements L2 layer functions for the user plane and the control plane. The controller / processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the first communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Then, the transmit processor 468 modulates the generated parallel stream into a multi-carrier / single-carrier symbol stream, which is then provided to different antennas 452 via the transmitter 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides it to the antenna 452.

[0232] In the transmission from the second communication device 450 to the first communication device 410, the function at the first communication device 410 is similar to the reception function at the second communication device 450 described in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna reception processor 472 and the reception processor 470. The reception processor 470 and the multi-antenna reception processor 472 jointly implement the functions of the L1 layer. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 can be associated with a memory 476 that stores program codes and data. The memory 476 can be referred to as a computer-readable medium. The controller / processor 475 provides demultiplexing between transmission and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the second communication device 450. The upper layer data packets from the controller / processor 475 can be provided to the core network. The controller / processor 475 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0233] As an embodiment, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 450 device at least: receives the first information block; receives the second information block; and sends the third information block.

[0234] As an embodiment, the second communication device 450 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates actions when executed by at least one processor, wherein the actions include: receiving the first information block; receiving the second information block; sending the third information block;

[0235] As an embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The first communication device 410 device at least: sends the first information block; sends the second information block; receives the third information block.

[0236] As an embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates actions when executed by at least one processor, and the actions include: sending the first information block; sending the second information block; and receiving the third information block.

[0237] As an embodiment, the first node in the present application includes the second communication device 450.

[0238] As an embodiment, the second node in the present application includes the first communication device 410.

[0239] As an embodiment, at least one of {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller / processor 459, the memory 460, and the data source 467} is used to receive the first information block; and at least one of {the antenna 420, the transmitter 418, the transmitting processor 416, the multi-antenna transmitting processor 471, the controller / processor 475, and the memory 476} is used to send the first information block.

[0240] As an embodiment, at least one of {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller / processor 459, the memory 460, and the data source 467} is used to receive the second information block; and at least one of {the antenna 420, the transmitter 418, the transmitting processor 416, the multi-antenna transmitting processor 471, the controller / processor 475, and the memory 476} is used to send the second information block.

[0241] As an embodiment, at least one of {the antenna 420, the receiver 418, the receiving processor 470, the multi-antenna receiving processor 472, the controller / processor 475, and the memory 476} is used to receive the third information block; and at least one of {the antenna 452, the transmitter 454, the transmitting processor 468, the multi-antenna transmitting processor 457, the controller / processor 459, the memory 460, and the data source 467} is used to send the third information block.

[0242] As an embodiment, at least one of {the antenna 420, the receiver 418, the receiving processor 470, the multi-antenna receiving processor 472, the controller / processor 475, and the memory 476} is used to receive the fourth information block; and at least one of {the antenna 452, the transmitter 454, the transmitting processor 468, the multi-antenna transmitting processor 457, the controller / processor 459, the memory 460, and the data source 467} is used to send the fourth information block.

[0243] As an embodiment, at least one of {the antenna 420, the receiver 418, the receiving processor 470, the multi-antenna receiving processor 472, the controller / processor 475, and the memory 476} is used to receive a reference signal in the first reference signal resource pool; at least one of {the antenna 452, the transmitter 454, the transmitting processor 468, the multi-antenna transmitting processor 457, the controller / processor 459, the memory 460, and the data source 467} is used to send a reference signal in the first reference signal resource pool.

[0244] As an embodiment, at least one of {the antenna 420, the receiver 418, the receiving processor 470, the multi-antenna receiving processor 472, the controller / processor 475, and the memory 476} is used to receive the fifth information block; and at least one of {the antenna 452, the transmitter 454, the transmitting processor 468, the multi-antenna transmitting processor 457, the controller / processor 459, and the memory 460} is used to send the fifth information block.

[0245] Example 5

[0246] Embodiment 5 illustrates a flowchart of wireless transmission according to an embodiment of the present application, as shown in the attached Figure 5 As shown in the attached Figure 5 In the embodiment, the second node U1 and the first node U2 are communication nodes transmitted via the air interface. Figure 5 In the embodiment, the steps in blocks F51 to F54 are respectively optional.

[0247] For the second node U1, a reference signal is received in the first reference signal resource pool in step S5101; a first information block is sent in step S511; a fifth information block is received in step S5102; a second information block is sent in step S512; a reference signal is sent in the target reference signal resource in step S5103; a third information block is received in step S513; and a fourth information block is received in step S5104.

[0248] For the first node U2, a reference signal is received in a first reference signal resource pool in step S5201; a first information block is received in step S521; a fifth information block is sent in step S5202; a second information block is received in step S522; a reference signal is received in a target reference signal resource in step S5203; a third information block is sent in step S523; and a fourth information block is sent in step S5204.

[0249] In Example 5, the first information block indicates a first function; the second information block indicates whether the target reference signal resource is associated with the first function; the third information block indicates a first compressed CSI, and the first pre-compression CSI is used by the first node U2 as an input of the first function to generate the first compressed CSI.

[0250] As an embodiment, the first node U2 is the first node in this application.

[0251] As an embodiment, the second node U1 is the second node in this application.

[0252] As an embodiment, the air interface between the second node U1 and the first node U2 includes a wireless interface between a base station device and a user equipment.

[0253] As an embodiment, the air interface between the second node U1 and the first node U2 includes a wireless interface between user equipments.

[0254] As an embodiment, the second node U1 is a base station maintaining a service cell of the first node U2.

[0255] As an embodiment, the first information block is transmitted in PDSCH.

[0256] As an embodiment, the second information block is transmitted in PDSCH.

[0257] As an embodiment, the third information block is transmitted in PUSCH (Physical Uplink Shared CHannel).

[0258] As an embodiment, the third information block is transmitted in PUCCH (Physical Uplink Control Channel).

[0259] As an example, Figure 5 The steps in box F51 exist; the first reference signal resource pool includes at least one reference signal resource; wherein the reception behavior in the first reference signal resource pool is used by the second node U1 to determine the first function.

[0260] As an example, Figure 5 The step in box F52 in exists; the fifth information block indicates whether the target reference signal resource is suitable for being associated with the first function.

[0261] As an embodiment, the fifth information block is transmitted in PUSCH.

[0262] As an embodiment, the fifth information block is transmitted in PUCCH.

[0263] As an example, Figure 5 The step in box F53 in exists; the method in the first node used for wireless communication includes: receiving a reference signal in the target reference signal resource.

[0264] As an example, Figure 5The step in box F53 in exists; the method in the second node used for wireless communication includes: sending a reference signal in the target reference signal resource.

[0265] As an embodiment, the phrase receiving a reference signal in the target reference signal resource means including: receiving a reference signal transmitted according to configuration information of the target reference signal resource.

[0266] As an example, Figure 5 The steps in box F54 exist; the fourth information block indicates the second compressed CSI, and the second pre-compression CSI is used by the first node U2 as an input of the first enhancement function to generate the second compressed CSI; wherein the first function is used by the first node U2 to generate the first enhancement function; the second information block indicates whether the target reference signal resource is associated with the first enhancement function.

[0267] As an embodiment, the fourth information block is carried by physical layer signaling.

[0268] As an embodiment, the fourth information block includes UCI.

[0269] As an embodiment, the fourth information block includes CSI.

[0270] As an embodiment, the fourth information block is earlier than the third information block.

[0271] As an embodiment, the fourth information block is later than the third information block.

[0272] As an embodiment, the fourth information block includes the second compressed CSI.

[0273] As an embodiment, the fourth information block is transmitted in PUSCH.

[0274] As an embodiment, the fourth information block is transmitted in PUCCH.

[0275] Example 6

[0276] Example 6 illustrates a schematic diagram of a first function according to an embodiment of the present application; Figure 6 In Example 6, the first function includes K1 sub-functions, where K1 is a positive integer greater than 1. Figure 6 In the above, the K1 sub-functions are represented by sub-function #0, ..., sub-function #(K1-1) respectively.

[0277] As an embodiment, the first function includes a first parameter group, and the first parameter group includes at least one parameter.

[0278] As an embodiment, the first parameter group includes one or more of a convolution kernel, a pooling function, parameters of a pooling function, an activation function, a threshold of an activation function, or weights between feature maps.

[0279] As an embodiment, the K1 sub-functions include one or more of a convolution function, a pooling function, a cascade function or an activation function.

[0280] As an embodiment, the first parameter group includes K1 parameter subgroups, and the K1 parameter subgroups are respectively used for the K1 sub-functions.

[0281] As an embodiment, the first information block indicates the value of a parameter in the first parameter group.

[0282] As an embodiment, the first information block indicates a characteristic of the first function.

[0283] As an embodiment, the first information block indicates partial features of the first function.

[0284] As an embodiment, the first information block indicates all characteristics of the first function.

[0285] As an embodiment, the first information block indicates the values ​​of the parameters in the first parameter group and the characteristics of the first function.

[0286] As an embodiment, the characteristics of the first function include: one or more of: convolution kernel size, number of convolution layers, convolution step size, pooling kernel size, pooling kernel step size, pooling function, activation function, or number of feature maps.

[0287] As an embodiment, there is a sub-function among the K1 sub-functions that includes a fully connected layer.

[0288] As a sub-embodiment of the above embodiment, Figure 6 The subfunction #(K1-1) in includes a fully connected layer.

[0289] As an embodiment, there is a sub-function among the K1 sub-functions including a pooling layer.

[0290] As an embodiment, at least one sub-function among the K1 sub-functions includes at least one convolutional layer.

[0291] As an embodiment, at least one sub-function among the K1 sub-functions includes at least one coding layer.

[0292] As an embodiment, there is one sub-function among the K1 sub-functions including a fully connected layer, and there is at least another sub-function among the K1 sub-functions including at least one encoding layer.

[0293] As an embodiment, a coding layer includes at least one convolutional layer.

[0294] As an embodiment, a coding layer includes at least one convolutional layer and one pooling layer.

[0295] As an embodiment, in the convolution layer, at least one convolution kernel is used to convolve the input of the first function to generate a corresponding feature map, and at least one feature map output by the convolution layer is reshaped into a vector input to the fully connected layer; the fully connected layer converts the one vector into the output of the first function.

[0296] As an embodiment, the first parameter group includes at least one of the convolution kernel of any convolution layer in the K1 sub-functions, or the weights between different convolution layers in the K1 sub-functions.

[0297] As an embodiment, there are two sub-functions in the K1 sub-functions that are cascaded, that is, the input of one of the two sub-functions is the output of the other of the two sub-functions.

[0298] As a sub-embodiment of the above embodiment, Figure 6 Subfunction #0 and subfunction #1 in (a) and 6(b) are cascaded.

[0299] As an embodiment, there are two sub-functions in the K1 sub-functions that are connected in parallel; that is, the outputs of the two sub-functions are jointly used as the input of another sub-function in the K1 sub-functions, or the output of another sub-function in the K1 sub-functions is simultaneously used as the input of the two sub-functions.

[0300] As a sub-embodiment of the above embodiment, Figure 6 Subfunction #1 and subfunction #2 in (b) are in parallel.

[0301] As a sub-embodiment of the above embodiment, Figure 6 Subfunction #(K1-3) and subfunction #(K1-4) in (b) are connected in parallel.

[0302] As an embodiment, the characteristics of the first function include: the value of K1, the number of sub-functions including convolution layers in the K1 sub-functions, the size of the input parameters and the size of the output parameters of each convolution layer, and at least one of the relationships between the K1 sub-functions.

[0303] As a sub-embodiment of the above embodiment, the relationship between the K1 sub-functions includes at least one of which sub-functions are cascaded, which sub-functions are parallel, or a sequential relationship between the K1 sub-functions.

[0304] As an embodiment, the P1 sub-functions are a subset of the K1 sub-functions, and P1 is a positive integer less than K1 and greater than 1; any sub-function of the P1 sub-functions includes at least one coding layer.

[0305] As a sub-embodiment of the above embodiment, any two of the P1 sub-functions have the same characteristics; the characteristics include the number of coding layers, the size of input parameters and the size of output parameters of each coding layer, etc.

[0306] As a sub-embodiment of the above embodiment, there are two sub-functions in the P1 sub-functions with different characteristics; the characteristics include the number of coding layers, the size of input parameters and the size of output parameters of each coding layer, etc.

[0307] As an embodiment, the first parameter group includes at least one of the convolution kernel included in any coding layer in the P1 sub-functions, or the weights between different coding layers in the P1 sub-functions.

[0308] As an embodiment, the characteristics of the first function include: the value of P1, the number of coding layers included in any sub-function of the P1 sub-functions, the size of the input parameters and the size of the output parameters of each coding layer.

[0309] Example 7

[0310] Example 7 illustrates a schematic diagram of a second function according to an embodiment of the present application; Figure 7 In Embodiment 7, the first compressed CSI is used by the second node as an input of a second function to generate the first CSI. The second function includes K2 sub-functions, where K2 is a positive integer greater than 1. Figure 7 In the above, the K2 sub-functions are represented by sub-function #0, ..., sub-function #(K2-1) respectively.

[0311] As an embodiment, the first CSI includes PMI.

[0312] As an embodiment, the first CSI includes one or more of CQI, CRI or RI.

[0313] As an embodiment, the first CSI includes a channel matrix.

[0314] As an embodiment, the first CSI includes amplitude and phase information of elements in a channel matrix.

[0315] As an embodiment, the first CSI includes information of a channel matrix.

[0316] As an embodiment, the first compressed CSI includes a second matrix, the first CSI includes a third matrix, and the product of the number of rows and the number of columns in the second matrix is ​​less than the product of the number of rows and the number of columns in the third matrix.

[0317] As a sub-embodiment of the above embodiment, the second matrix is ​​a vector.

[0318] As an embodiment, the first compressed CSI consists of Q2 bits, and the first CSI consists of Q3 bits, Q2 and Q3 are respectively positive integers greater than 1, and Q3 is greater than Q2.

[0319] As an embodiment, the second function is non-linear.

[0320] As an embodiment, the input of the second function includes compressed CSI, and the output of the second function includes restored uncompressed CSI.

[0321] As an embodiment, the load of any input of the second function is less than the load of the output of the second function corresponding to the any input.

[0322] As an embodiment, the number of elements included in any one input of the second function is less than the number of elements included in the output of the second function corresponding to the any one input.

[0323] As an embodiment, the second function includes a neural network.

[0324] As an embodiment, the second function includes a neural network for CSI compression.

[0325] As an embodiment, the second function includes a decoder of a neural network for CSI compression.

[0326] As an embodiment, the second function includes a second parameter group, and the second parameter group includes at least one parameter.

[0327] As an embodiment, the second parameter group includes one or more of a convolution kernel, a pooling function, a parameter of a pooling function, an activation function, a threshold of an activation function, or weights between feature maps.

[0328] As an embodiment, the first information block indicates the second function.

[0329] As an embodiment, the first information block indicates values ​​of at least some parameters in the second parameter group.

[0330] As an embodiment, the first information block indicates at least some characteristics of the second function.

[0331] As an embodiment, the characteristics of the second function include: one or more of: convolution kernel size, number of convolution layers, convolution step size, pooling kernel size, pooling kernel step size, pooling function, activation function, or number of feature maps.

[0332] As an embodiment, the K2 sub-functions include one or more of a convolution function, a pooling function, a cascade function or an activation function.

[0333] As an embodiment, the second parameter group includes K2 parameter subgroups, and the K2 parameter subgroups are used for the K2 sub-functions respectively.

[0334] As an embodiment, there is a sub-function among the K2 sub-functions including a preprocessing layer.

[0335] As a sub-embodiment of the above embodiment, Figure 7 Subfunction #0 in includes the preprocessing layer.

[0336] As a sub-embodiment of the above embodiment, the preprocessing layer includes a fully connected layer.

[0337] As a sub-embodiment of the above embodiment, the preprocessing layer expands the size of the input of the second function.

[0338] As an embodiment, there is a sub-function among the K2 sub-functions that includes a pooling layer.

[0339] As an embodiment, at least one sub-function among the K2 sub-functions includes at least one convolutional layer.

[0340] As an embodiment, at least one sub-function among the K2 sub-functions includes at least one decoding layer.

[0341] As an embodiment, the one decoding layer includes at least one convolutional layer.

[0342] As an embodiment, the one decoding layer includes at least one convolutional layer and one pooling layer.

[0343] As an embodiment, one of the K2 sub-functions includes a pre-processing layer, and at least another sub-function of the K2 sub-functions includes at least one decoding layer.

[0344] As an embodiment, the second parameter group includes at least one of the convolution kernel of any convolution layer in the K2 sub-functions, or the weights between different convolution layers in the K2 sub-functions.

[0345] As an embodiment, there are two sub-functions in the K2 sub-functions that are cascaded, that is, the input of one of the two sub-functions is the output of the other sub-function of the two sub-functions.

[0346] As a sub-embodiment of the above embodiment, Figure 7 Subfunction #0 and subfunction #1 in (a) and 7(c) are cascaded.

[0347] As an embodiment, there are two sub-functions in the K2 sub-functions that are connected in parallel; that is, the outputs of the two sub-functions are jointly used as the input of another sub-function in the K2 sub-functions, or the output of another sub-function in the K2 sub-functions is simultaneously used as the input of the two sub-functions.

[0348] As a sub-embodiment of the above embodiment, Figure 7 Subfunction #1 and subfunction #2 in (b) are in parallel.

[0349] As a sub-embodiment of the above embodiment, Figure 7 Sub-function #(K2-3) and sub-function #(K2-4) in (b) are connected in parallel.

[0350] As an embodiment, the characteristics of the second function include: the value of K2, the number of sub-functions including convolutional layers among the K2 sub-functions, the size of input parameters and the size of output parameters of each convolutional layer, or the relationship between the K2 sub-functions includes at least one of which sub-functions are cascaded and which sub-functions are parallel.

[0351] As an embodiment, the P2 sub-functions are a subset of the K2 sub-functions, and P2 is a positive integer less than K2 and greater than 1; any sub-function of the P2 sub-functions includes at least one decoding layer.

[0352] As a sub-embodiment of the above embodiment, any two of the P2 sub-functions have the same characteristics; the characteristics include the number of decoding layers, the size of input parameters and the size of output parameters of each decoding layer, etc.

[0353] As a sub-embodiment of the above embodiment, there are two sub-functions among the P2 sub-functions with different characteristics; the characteristics include the number of decoding layers, the size of input parameters and the size of output parameters of each decoding layer, etc.

[0354] As an embodiment, the second parameter group includes a convolution kernel included in any decoding layer in the P2 sub-functions, or at least one of the weights between different decoding layers in the P2 sub-functions.

[0355] As an embodiment, the characteristics of the second function include: the value of P2, the number of decoding layers included in each of the P2 sub-functions, the size of the input parameters and the size of the output parameters of each decoding layer, etc.

[0356] As an embodiment, the second node determines the second function according to the receiving behavior in the first reference signal resource pool.

[0357] Example 8

[0358] Embodiment 8 illustrates a schematic diagram of the relationship between the first pre-compression CSI, the first compressed CSI, the first function and the second function according to an embodiment of the present application; Figure 8 In Embodiment 8, the first pre-compression CSI is used by the first node as an input of the first function to generate the first compressed CSI; and the first compressed CSI is used by the second node as an input of the second function to generate the first CSI.

[0359] As an embodiment, the first CSI includes a recovered value of the first CSI before compression.

[0360] As an embodiment, the first CSI includes an estimated value of the first CSI before compression.

[0361] As an embodiment, the first CSI includes all or part of the information of the first pre-compression CSI.

[0362] As an embodiment, the first compressed CSI is carried by the third information block, the third information block is sent by the first node, and is received by the second node through an air interface.

[0363] As an embodiment, the first function is used to compress the first pre-compression CSI to reduce the air interface overhead of the first compressed CSI, and the second function is used to decompress the first compressed CSI to restore the first pre-compression CSI as much as possible.

[0364] As an embodiment, the first node obtains channel measurement for generating the first pre-compressed CSI based on a reference signal received in a first reference signal resource.

[0365] As an embodiment, the first reference signal resource includes a CSI-RS resource or a SS / PBCH block resource.

[0366] As an embodiment, the first reference signal resource includes a DMRS port.

[0367] As an embodiment, the second information block indicates that the target reference signal resource is associated with the first function, and the first reference signal resource is the target reference signal resource.

[0368] As an embodiment, the first reference signal resource and the target reference signal resource correspond to different reference signal resource identifiers.

[0369] As an embodiment, the reference signal resource identifier includes NZP-CSI-RS-ResourceSetId.

[0370] As an embodiment, the reference signal resource identifier includes SSB-Index.

[0371] As an embodiment, the first node obtains a first channel matrix based on measurement of a reference signal received in the first reference signal resource, and any element in the first channel matrix includes information about a channel experienced by a wireless signal transmitted on an RS port of the first reference signal resource on a frequency unit; the first channel matrix is ​​used to generate the first pre-compression CSI.

[0372] As a sub-embodiment of the above embodiment, the first pre-compression CSI includes amplitude and phase information of elements in the first channel matrix.

[0373] As a sub-embodiment of the above embodiment, the first pre-compression CSI includes the first channel matrix.

[0374] As a sub-embodiment of the above embodiment, the first pre-compression CSI is obtained after the first channel matrix is ​​mathematically transformed.

[0375] As a sub-embodiment of the above embodiment, the first CSI includes amplitude and phase information of elements in the first channel matrix.

[0376] As a sub-embodiment of the above embodiment, the first CSI includes an estimated value of the first channel matrix.

[0377] As an embodiment, the frequency unit is a subcarrier.

[0378] As an embodiment, the frequency unit is a PRB (Physical Resource Block).

[0379] As an embodiment, the frequency unit is composed of multiple continuous subcarriers.

[0380] As an embodiment, the frequency unit consists of multiple consecutive PRBs.

[0381] As an embodiment, the mathematical transformation includes DFT (Discrete Fourier Transform).

[0382] As an embodiment, the mathematical transformation includes one or more of quantization, transformation from the spatial domain to the angular domain, transformation from the frequency domain to the time domain, or truncation.

[0383] As an embodiment, the second function is an inverse function of the first function.

[0384] As an embodiment, the first function is established on the first node, and the second function is established on the second node.

[0385] As an embodiment, the first function is established on the first node and the second node at the same time, and the second function is established on the second node.

[0386] As an embodiment, the first function is established on the first node, and the second function is established on both the first node and the second node.

[0387] As an embodiment, the first function and the second function are both established on the first node and the second node simultaneously.

[0388] As an embodiment, an encoder and a decoder based on CsiNet or CRNet are used to implement the first function and the second function respectively.

[0389] As a sub-embodiment of the above embodiment, for a detailed description of CsiNet, refer to Chao-Kai Wen, Deep Learning for Massive CSI Feedback, 2018 IEEE Wireless Communications Letters, vol. 7 No. 5, Oct. 2018, etc.

[0390] As a sub-embodiment of the above embodiment, for a detailed description of CRNet, refer to Zhilin Lu, Multi-resolution CSI Feedback with Deep Learning in Massive MIMO System, 2020 IEEE International Conference on Communications (ICC), etc.

[0391] As an embodiment, the second node indicates the first function to the first node through the first information block.

[0392] As an embodiment, the second function is the inverse function of the first function, and the phrase that the target reference signal resource is associated with the first function means that the compressed CSI generated based on the measurement of the reference signal received in the target reference signal resource is used as the input of the second function.

[0393] As an embodiment, the second function is the inverse function of the first function, and the phrase that the target reference signal resource is associated with the first function means that the second function is used to recover the CSI generated based on the measurement of the reference signal received in the target reference signal resource.

[0394] As an embodiment, the second function is the inverse function of the first function, and the phrase that the target reference signal resource is associated with the first function means that the second function is used to recover information about the channel experienced by the reference signal received in the target reference signal resource based on the compressed CSI generated based on the measurement of the reference signal received in the target reference signal resource.

[0395] As an embodiment, the second function is the inverse function of the first function, and the phrase that the target reference signal resource is not associated with the first function means that the second function is not used to recover information about the channel experienced by the reference signal received in the target reference signal resource.

[0396] Example 9

[0397] Embodiment 9 illustrates a schematic diagram of the relationship between the second pre-compression CSI and the second compressed CSI according to an embodiment of the present application; Fig. 9 In Embodiment 9, the second pre-compression CSI is used by the first node as an input of the first enhancement function to generate the second compressed CSI.

[0398] As an embodiment, the second pre-compression CSI includes PMI.

[0399] As an embodiment, the second pre-compression CSI includes one or more of CQI, CRI or RI.

[0400] As an embodiment, the second pre-compression CSI includes amplitude and phase information of elements in a channel matrix.

[0401] As an embodiment, the second pre-compression CSI includes a matrix.

[0402] As an embodiment, the second pre-compression CSI includes a channel matrix.

[0403] As an embodiment, the second compressed CSI includes PMI.

[0404] As an embodiment, the second compressed CSI includes one or more of CQI, CRI or RI.

[0405] As an embodiment, the second compressed CSI includes amplitude and phase information of elements in a channel matrix.

[0406] As an embodiment, the second compressed CSI includes a matrix.

[0407] As an embodiment, the second compressed CSI includes a vector.

[0408] As an embodiment, the second pre-compression CSI includes a fourth matrix, the second compressed CSI includes a fifth matrix, and the product of the number of rows and the number of columns of the fourth matrix is ​​greater than the product of the number of rows and the number of columns of the fifth matrix.

[0409] As a sub-embodiment of the above embodiment, the fifth matrix is ​​a vector.

[0410] As an embodiment, the second pre-compression CSI consists of Q4 bits, and the second compressed CSI consists of Q5 bits, Q4 and Q5 are respectively positive integers greater than 1, and Q4 is greater than Q5.

[0411] As an embodiment, the second information block indicates that the target reference signal resource is associated with the first enhancement function.

[0412] As an embodiment, the second information block indicates that the target reference signal resource is not associated with the first enhancement function.

[0413] As an embodiment, the second node determines the first enhancement function according to the receiving behavior in the first reference signal resource pool.

[0414] As an embodiment, the second information block indicates that the target reference signal resource is associated with the first function but is not associated with the first enhancement function.

[0415] As an embodiment, the second information block indicates that the target reference signal resource is associated with the first function and is associated with the first enhancement function.

[0416] As an embodiment, the second information block indicates that the target reference signal resource is associated with the first enhancement function but is not associated with the first function.

[0417] As an embodiment, the second information block indicates that the target reference signal resource is not associated with the first function and the first enhancement function.

[0418] As an embodiment, if the target reference signal resource is associated with the first enhancement function, the target reference signal resource is associated with the first function.

[0419] As an embodiment, measurements of the target reference signal resource are used to generate target pre-compression CSI; if the target reference signal resource is associated with both the first function and the first enhancement function, the target pre-compression CSI is used as an input of the first enhancement function to generate the target compressed CSI; if the target reference signal resource is not associated with the first enhancement function but is associated with the first function, the target pre-compression CSI is used as an input of the first function to generate the target compressed CSI.

[0420] Example 10

[0421] Embodiment 10 illustrates a schematic diagram of a first enhancement function according to an embodiment of the present application; Fig.10 In embodiment 10, the first function and the third function are used to generate the first enhancement function.

[0422] As an embodiment, the first enhancement function is non-linear.

[0423] As an embodiment, the input of the first enhancement function includes a result of channel measurement.

[0424] As an embodiment, the input of the first enhancement function includes a channel matrix.

[0425] As an embodiment, the input of the first enhancement function includes uncompressed CSI.

[0426] As an embodiment, the output of the first enhancement function includes compressed CSI.

[0427] As an embodiment, a load of any input of the first enhancement function is greater than a load of an output of the first enhancement function corresponding to the any input.

[0428] As an embodiment, the number of elements included in any one input of the first enhancement function is greater than the number of elements included in the output of the first enhancement function corresponding to the any one input.

[0429] As an embodiment, the first enhancement function includes a neural network.

[0430] As an embodiment, the first enhancement function includes a neural network for CSI compression.

[0431] As an embodiment, the first enhancement function includes an encoder of a neural network for CSI compression.

[0432] As an embodiment, the first enhancement function includes the first function.

[0433] As an embodiment, the first enhancement function includes K3 sub-functions, K3 is a positive integer greater than 1; the K3 sub-functions include one or more of a convolution function, a pooling function, a cascade function or an activation function. Fig.10 In the figure, the K3 sub-functions are represented as sub-function #0, ..., sub-function #(K3-1). Fig.10 In the formula, x is a positive integer less than K3-1.

[0434] As an embodiment, the first function and the third function are respectively composed of partial sub-functions of the K3 sub-functions.

[0435] As an embodiment, at least one sub-function among the K3 sub-functions includes at least one coding layer.

[0436] As an embodiment, the number of coding layers included in the first enhancement function is greater than the number of coding layers included in the first function.

[0437] As an embodiment, at least one sub-function among the K3 sub-functions that does not belong to the first function includes at least one coding layer.

[0438] As an embodiment, the input of the first function is the input of the first enhancement function.

[0439] As an embodiment, the third function includes one or more of convolution, pooling, cascade or activation functions.

[0440] As an embodiment, the first enhancement function is formed by cascading the first function and the third function.

[0441] As an embodiment, the output of the first function is the input of the third function, and the output of the third function is the output of the first increase function; Fig.10 (c) as shown.

[0442] As an embodiment, the first function and the third function are connected in parallel to generate the first enhancement function.

[0443] As an embodiment, the first function and the third function share the same input; for example, Fig.10 (b) as shown.

[0444] As an embodiment, a sub-function in the first function and the third function share the same input; for example, Fig.10 Subfunction #1 in (a) is a subfunction in the first function, and the subfunction #1 and the third function share the same input.

[0445] As an embodiment, the output of a sub-function in the first function is the input of the third function; Fig.10 The sub-function #0 in (a) is a sub-function in the first function, and the output of the sub-function #0 is the input of the third function.

[0446] As an embodiment, the output of a sub-function in the first function and the output of the third function are used together as the input of another sub-function in the first function; Fig.10 The sub-function #(K3-3) and sub-function #(K3-1) in (b) both belong to the first function, and the output of the sub-function #(K3-3) and the output of the third function are used together as the input of the sub-function #(K3-1).

[0447] As an embodiment, the output of the first function is the output of the first enhancement function, such as Fig.10 (b) as shown.

[0448] As an embodiment, the output of the first function and the output of the third function are used together as the input of a fourth function, and the output of the fourth function is the output of the first enhancement function; Fig.10 As shown in (a), the fourth function includes the following Fig.10 Subfunction #(K3-1) in (a).

[0449] As an embodiment, the phrase the target reference signal resource is associated with the first enhancement function has a meaning similar to the phrase the target reference signal resource is associated with the first function, except that the first function is replaced by the first enhancement function.

[0450] As an embodiment, the first information block indicates the first enhancement function.

[0451] As an embodiment, the first information block indicates one or more of the convolution kernel, pooling function, parameters of the pooling function, activation function, threshold of the activation function, weights between feature maps, convolution kernels included in each coding layer, or weights between different coding layers included in the first enhancement function.

[0452] As an embodiment, the first information block indicates a feature of the first enhancement function.

[0453] As an embodiment, the characteristics of the first enhancement function include: the relationship between the first function and the third function, the characteristics of the first function, or one or more characteristics of the third function.

[0454] As a sub-embodiment of the above embodiment, the characteristics of the third function include: one or more of convolution kernel size, number of convolution layers, convolution step size, pooling kernel size, pooling kernel step size, pooling function, activation function or number of feature maps.

[0455] As a sub-embodiment of the above embodiment, the relationship between the first function and the third function includes: which sub-functions in the first function and which sub-functions in the third function are cascaded and which are parallel, or at least one of the order of the sub-functions in the first function and the sub-functions in the third function.

[0456] As an embodiment, the characteristics of the first enhancement function include: the value of K3, the number of sub-functions including coding layers in the K3 sub-functions, the number of coding layers included, or at least one of the size of the input parameters and the size of the output parameters of each coding layer.

[0457] Embodiment 11

[0458] Embodiment 11 illustrates a schematic diagram of a second enhancement function according to an embodiment of the present application; Fig.11 In embodiment 11, the second compressed CSI is used by the second node as an input of a second enhancement function to generate a second CSI, and the second function and the fifth function are used to generate the second enhancement function.

[0459] As an embodiment, the second CSI includes PMI.

[0460] As an embodiment, the second CSI includes one or more of CQI, CRI or RI.

[0461] As an embodiment, the second CSI includes a channel matrix.

[0462] As an embodiment, the second CSI includes amplitude and phase information of elements in a channel matrix.

[0463] As an embodiment, the second CSI includes information of a channel matrix.

[0464] As an embodiment, the second CSI includes a sixth matrix, the second compressed CSI includes a fifth matrix, and the product of the number of rows and the number of columns of the fifth matrix is ​​less than the product of the number of rows and the number of columns of the sixth matrix.

[0465] As a sub-embodiment of the above embodiment, the fifth matrix is ​​a vector.

[0466] As an embodiment, the second CSI consists of Q6 bits, and the second compressed CSI consists of Q5 bits, Q5 and Q6 are respectively positive integers greater than 1, and Q6 is greater than Q5.

[0467] As an embodiment, the second enhancement function is non-linear.

[0468] As an embodiment, the input of the second enhancement function includes compressed CSI, and the output of the second enhancement function includes restored pre-compression CSI.

[0469] As an embodiment, a load of any input of the second enhancement function is less than a load of an output of the second enhancement function corresponding to the any input.

[0470] As an embodiment, the number of elements included in any one input of the second enhancement function is less than the number of elements included in the output of the second enhancement function corresponding to the any one input.

[0471] As an embodiment, the second enhancement function includes a neural network.

[0472] As an embodiment, the second enhancement function includes a neural network for CSI compression.

[0473] As an embodiment, the second enhancement function includes a decoder of a neural network for CSI compression.

[0474] As an embodiment, the second enhancement function includes the second function.

[0475] As an embodiment, the second enhancement function includes K4 sub-functions, K4 is a positive integer greater than 1; the K4 sub-functions include one or more of a convolution function, a pooling function, a cascade function or an activation function. Fig.11 In the figure, the K4 sub-functions are represented as sub-function #0, ..., sub-function #(K4-1). Fig.11 In the formula (a), x is a positive integer less than K4-1.

[0476] As an embodiment, the second function and the fifth function are respectively composed of some sub-functions among the K4 sub-functions.

[0477] As an embodiment, at least one sub-function among the K4 sub-functions includes at least one decoding layer.

[0478] As an embodiment, the number of decoding layers included in the second enhancement function is greater than the number of decoding layers included in the second function.

[0479] As an embodiment, at least one sub-function among the K4 sub-functions that does not belong to the second function includes at least one decoding layer.

[0480] As an embodiment, the input of the second function is the input of the second enhancement function.

[0481] As an embodiment, the fifth function includes one or more of convolution, pooling, cascade or activation functions.

[0482] As an embodiment, the second enhancement function is formed by cascading the second function and the fifth function.

[0483] As an embodiment, the output of the second function is the input of the fifth function, and the output of the fifth function is the output of the second increase function, as shown in the attached Fig.11 (c) as shown.

[0484] As an embodiment, the second function and the fifth function are connected in parallel to generate the second enhancement function.

[0485] As an embodiment, the second function and the fifth function share the same input, as shown in the attached Fig.11 (b) as shown.

[0486] As an embodiment, a sub-function in the second function and the fifth function share the same input; for example, Fig.11 Subfunction #1 in (a) is a subfunction in the second function, and the subfunction #1 and the fifth function share the same input.

[0487] As an embodiment, the output of a sub-function in the second function is the input of the fifth function; Fig.11 Sub-function #0 in (a) is a sub-function in the second function, and the output of the sub-function #0 is the input of the fifth function.

[0488] As an embodiment, the output of one sub-function in the second function and the output of the fifth function are used together as the input of another sub-function in the second sub-function; Fig.11 Sub-function #(K4-3) and sub-function #(K4-1) in (b) both belong to the second function, and the output of the sub-function #(K4-3) and the output of the fifth function are used together as the input of the sub-function #(K4-1).

[0489] As an embodiment, the output of the second function is the output of the second enhancement function; for example, Fig.11 (b) as shown.

[0490] As an embodiment, the output of the second function and the output of the fifth function are used together as the input of the sixth function, and the output of the sixth function is the output of the second enhancement function; Fig.11 As shown in (a), the sixth function includes the following Fig.11 Subfunction #(K4-1) in (a).

[0491] As an embodiment, the second node determines the second enhancement function according to the receiving behavior in the first reference signal resource pool.

[0492] As an embodiment, the second enhancement function is the inverse function of the first enhancement function; the phrase "the target reference signal resource is associated with the first enhancement function" has a similar meaning to the phrase "the target reference signal resource is associated with the first function", except that the first function is replaced by the first enhancement function, and the second function is replaced by the second enhancement function.

[0493] As an embodiment, the first information block indicates the second enhancement function.

[0494] As an embodiment, the first information block indicates one or more of the convolution kernel, pooling function, parameters of the pooling function, activation function, threshold of the activation function, weights between feature maps, convolution kernels included in each decoding layer, or weights between different decoding layers included in the second enhancement function.

[0495] As an embodiment, the first information block indicates a feature of the second enhancement function.

[0496] As an embodiment, the characteristics of the second enhancement function include: the relationship between the second function and the fifth function, the characteristics of the second function, or one or more of the characteristics of the fifth function.

[0497] As a sub-embodiment of the above embodiment, the characteristics of the fifth function include: one or more of convolution kernel size, number of convolution layers, convolution step size, pooling kernel size, pooling kernel step size, pooling function, activation function or number of feature maps.

[0498] As a sub-embodiment of the above embodiment, the relationship between the second function and the fifth function includes: which sub-functions in the second function and which sub-functions in the fifth function are cascaded and which are parallel, or at least one of the order of the sub-functions in the second function and the sub-functions in the fifth function.

[0499] As an embodiment, the characteristics of the second enhancement function include: the value of K4, the number of sub-functions of the K4 sub-functions including decoding layers, the number of decoding layers included, and at least one of the size of the input parameters and the size of the output parameters of each decoding layer.

[0500] Example 12

[0501] Embodiment 12 illustrates a schematic diagram of the relationship between the second pre-compression CSI, the second compressed CSI, the first enhancement function and the second enhancement function according to an embodiment of the present application; Fig.12 In Embodiment 12, the second pre-compression CSI is used by the first node as an input of the first enhancement function to generate the second compressed CSI, and the second compressed CSI is used by the second node as an input of the second enhancement function to generate the second CSI.

[0502] As an embodiment, the second CSI includes an estimated value of the second CSI before compression.

[0503] As an embodiment, the second CSI includes all or part of the information of the second pre-compression CSI.

[0504] As an embodiment, the second compressed CSI is carried by the fourth information block, the fourth information block is sent by the first node, and is received by the second node through an air interface.

[0505] As an embodiment, the first enhancement function is used to compress the second pre-compression CSI to reduce the air interface overhead of the second compressed CSI, and the second enhancement function is used to decompress the second compressed CSI to restore the second pre-compression CSI as much as possible.

[0506] As an embodiment, the second information block indicates that the target reference signal resource is associated with the first enhancement function, and the first node obtains channel measurement for generating the second pre-compression CSI based on the reference signal received in the target reference signal resource.

[0507] As an embodiment, the second pre-compression CSI is independent of the measurement of the reference signal received in the target reference signal resource.

[0508] As an embodiment, the second information block indicates that the target reference signal resource is not associated with the first enhancement function, and the second pre-compression CSI is irrelevant to the measurement of the reference signal received in the target reference signal resource.

[0509] As an embodiment, the second enhancement function is an inverse function of the first enhancement function.

[0510] As an embodiment, the first node obtains channel measurement for calculating the second pre-compression CSI based on the reference signal received in the second reference signal resource.

[0511] As an embodiment, the second reference signal resource includes a CSI-RS resource or a SS / PBCH block resource.

[0512] As an embodiment, the second reference signal resource includes a DMRS port.

[0513] As an embodiment, the second information block indicates that the target reference signal resource is associated with the first enhancement function, and the second reference signal resource is the target reference signal resource.

[0514] As an embodiment, the second reference signal resource and the target reference signal resource correspond to different reference signal resource identifiers.

[0515] As an embodiment, the second reference signal resource and the first reference signal resource correspond to different reference signal resource identifiers.

[0516] As an embodiment, the first node obtains a second channel matrix based on channel measurement of a reference signal received in the second reference signal resource, and any element in the second channel matrix includes information about a channel experienced by a wireless signal transmitted on an RS port of the second reference signal resource on a frequency unit; the second channel matrix is ​​used to generate the second pre-compression CSI.

[0517] As a sub-embodiment of the above embodiment, the second pre-compression CSI includes the second channel matrix.

[0518] As a sub-embodiment of the above embodiment, the second pre-compression CSI includes amplitude and phase information of elements in the second channel matrix.

[0519] As a sub-embodiment of the above embodiment, the second pre-compression CSI is obtained after the second channel matrix is ​​mathematically transformed.

[0520] As a sub-embodiment of the above embodiment, the second CSI includes amplitude and phase information of elements in the second channel matrix.

[0521] As a sub-embodiment of the above embodiment, the second CSI includes an estimated value of the second channel matrix.

[0522] Example 13

[0523] Embodiment 13 illustrates a schematic diagram of a second information block indicating a first enhancement function according to an embodiment of the present application; Fig.13 shown.

[0524] As an embodiment, the second information block indicates one or more of the convolution kernel included in the first enhancement function, the pooling function, the parameters of the pooling function, the activation function, the threshold of the activation function, the weights between feature maps, the convolution kernel included in each coding layer, or the weights between different coding layers.

[0525] As an embodiment, the second information block indicates a feature of the first enhancement function.

[0526] As an embodiment, the second information block indicates one or more of the convolution kernel, pooling function, parameters of the pooling function, activation function, threshold of the activation function, weights between feature maps, convolution kernels included in each decoding layer, or weights between different decoding layers included in the second enhancement function.

[0527] As an embodiment, the second information block indicates a feature of the second enhancement function.

[0528] Embodiment 14

[0529] Embodiment 14 illustrates a schematic diagram of a receiving behavior in a first reference signal resource pool according to an embodiment of the present application being used by a target receiver of the first reference signal resource pool to determine a first function; as shown in the attached Fig.14 shown.

[0530] As an embodiment, the first reference signal resource pool includes multiple reference signal resources.

[0531] As an embodiment, the first reference signal resource pool includes only one reference signal resource.

[0532] As an embodiment, any reference signal resource in the first reference signal resource pool includes an SRS resource.

[0533] As an embodiment, any reference signal resource in the first reference signal resource pool is an SRS resource.

[0534] As an embodiment, there is a reference signal resource in the first reference signal resource pool including a DMRS port.

[0535] As an embodiment, there is a reference signal resource in the first reference signal resource pool including a PTRS port.

[0536] As an embodiment, any reference signal resource in the first reference signal resource pool includes at least one RS port.

[0537] As a sub-embodiment of the above embodiment, the RS port includes an SRS port.

[0538] As a sub-embodiment of the above embodiment, the RS port includes an antenna port.

[0539] As a sub-embodiment of the above embodiment, the RS port includes a DMRS port or a PTRS port.

[0540] As an embodiment, the reference signal resources in the first reference signal resource pool belong to the same carrier.

[0541] As an embodiment, the reference signal resources in the first reference signal resource pool belong to the same BWP (BandWidth Part, bandwidth interval).

[0542] As an embodiment, the reference signal resources in the first reference signal resource pool belong to the same serving cell.

[0543] As an embodiment, there are two reference signal resources in the first reference signal resource pool, which belong to different carriers.

[0544] As an embodiment, there are two reference signal resources in the first reference signal resource pool belonging to different BWPs.

[0545] As an embodiment, there are two reference signal resources in the first reference signal resource pool, which belong to different serving cells.

[0546] As an embodiment, there is a reference signal resource in the first reference signal resource pool that is non-periodic.

[0547] As an embodiment, there is a reference signal resource in the first reference signal resource pool which is quasi-static.

[0548] As an embodiment, there is a reference signal resource in the first reference signal resource pool that is periodic.

[0549] As an embodiment, there is a reference signal resource in the first reference signal resource pool, which appears earlier in the time domain than the target reference signal resource in the time domain.

[0550] As an embodiment, there is a reference signal resource in the first reference signal resource pool, which appears in the time domain later than the target reference signal resource in the time domain.

[0551] As an embodiment, the phrase determining the first function includes: determining values ​​of parameters in the first parameter group.

[0552] As an embodiment, the phrase determining the first function means comprising: determining a characteristic of the first function.

[0553] As an embodiment, measurements of reference signals received in the first reference signal resource pool are used by the second node to determine the first function.

[0554] As an embodiment, the second node obtains channel measurement for determining the first function based on the reference signal received in the first reference signal resource pool.

[0555] As an embodiment, the second node determines the first function based on channel measurement of the reference signal received in the first reference signal resource pool.

[0556] As an embodiment, the optimization goal of the second node when determining the first function includes: optimizing the error between the first CSI and the first CSI before compression.

[0557] As an embodiment, the optimization includes: minimization.

[0558] As an embodiment, the optimization includes: making not greater than a given threshold.

[0559] As an embodiment, the error includes at least one of MSE (Mean Square Error), LMMSE (Linear Minimum MSE) or NMSE (Normalized MSE).

[0560] As an embodiment, the second node jointly determines the first function and the second function according to the receiving behavior in the first reference signal resource pool.

[0561] As an embodiment, the first node determines the first enhancement function according to the receiving behavior in the first reference signal resource pool.

[0562] As an embodiment, the first node jointly determines the first enhancement function and the second enhancement function according to the reception behavior in the first reference signal resource pool.

[0563] As an embodiment, the second node determines the second function, at least one of the first enhancement function and the second enhancement function based on channel measurement of the reference signal received in the first reference signal resource pool.

[0564] Embodiment 15

[0565] Embodiment 15 illustrates a schematic diagram of a first transmission configuration state implicitly indicating whether a target reference signal resource is associated with a first function according to an embodiment of the present application; Fig.15 shown.

[0566] As an embodiment, the second information block indicates the first transmission configuration state.

[0567] As an embodiment, the first transmission configuration state includes a TCI (Transmission Configuration Indicator) state.

[0568] As an embodiment, the first transmission configuration state is a TCI state.

[0569] As an embodiment, the first transmission configuration state indicates a QCL relationship.

[0570] As an embodiment, the first transmission configuration state includes parameters for configuring a QCL relationship between an RS port of the target reference signal resource and one or two reference signals.

[0571] As an embodiment, the first transmission configuration state is a TCI state, and the second information block indicates the TCI-StateId corresponding to the first transmission configuration state.

[0572] As an embodiment, the first transmission configuration state is the TCI state of the target reference signal resource.

[0573] As an embodiment, the second information block indicates that the TCI state of the target reference signal resource is the first transmission configuration state.

[0574] As an embodiment, the first transmission configuration state is used to determine the QCL relationship of the target reference signal resource.

[0575] As an embodiment, the first transmission configuration state is used to determine a spatial reception parameter (Spatial Rx parameter) of the target reference signal resource.

[0576] As an embodiment, the first transmission configuration state is used to determine large-scale properties of a channel experienced by a reference signal received in the target reference signal resource.

[0577] As an embodiment, the large-scale characteristics include one or more of delay spread, Doppler spread, Doppler shift, average delay, or spatial Rx parameter.

[0578] As an embodiment, the first transmission configuration state indicates a third reference signal resource, and the RS port of the target reference signal resource and the RS port of the third reference signal resource are quasi co-located.

[0579] As a sub-embodiment of the above embodiment, the third reference signal resource includes a CSI-RS resource or a SS / PBCH block resource.

[0580] As a sub-embodiment of the above embodiment, the first transmission configuration state indicates that the QCL type corresponding to the third reference signal resource is QCL-TypeD, and the RS port of the target reference signal resource and the RS port of the third reference signal resource are quasi co-located (Quasi Co-Located) and correspond to QCL-TypeD.

[0581] As a sub-embodiment of the above embodiment, the first node may infer the large-scale characteristics of the channel experienced by the reference signal in the target reference signal resource from the large-scale characteristics of the channel experienced by the reference signal in the third reference signal resource.

[0582] As a sub-embodiment of the above embodiment, the first node may infer the spatial reception parameter of the reference signal in the target reference signal resource from the spatial reception parameter of the reference signal in the third reference signal resource.

[0583] As an embodiment, if the first transmission configuration state belongs to a first transmission configuration state set, the target reference signal resource is associated with the first function; if the first transmission configuration state does not belong to the first transmission configuration state set, the target reference signal resource is not associated with the first function; the first transmission configuration state set includes at least one transmission configuration state.

[0584] As a sub-embodiment of the above embodiment, the first transmission configuration state set is configured by RRC signaling.

[0585] As a sub-embodiment of the above embodiment, any transmission configuration state in the first transmission configuration state set is a TCI state.

[0586] As an embodiment, if the third reference signal resource belongs to a first reference signal resource set, the target reference signal resource is associated with the first function; if the third reference signal resource does not belong to the first reference signal resource set, the target reference signal resource is not associated with the first function; the first reference signal resource set includes at least one reference signal resource.

[0587] As a sub-embodiment of the above embodiment, the first reference signal resource set is configured by RRC signaling.

[0588] As an embodiment, the first transmission configuration state implicitly indicates whether the target reference signal resource is associated with the first enhancement function.

[0589] Example 16

[0590] Embodiment 16 illustrates a schematic diagram of a fifth information block indicating whether a target reference signal resource is suitable for being associated with a first function according to an embodiment of the present application; Fig.16 shown.

[0591] As an embodiment, the fifth information block is carried by RRC signaling.

[0592] As an embodiment, the fifth information block is carried by MAC CE.

[0593] As an embodiment, the fifth information block is carried by the physical layer.

[0594] As an embodiment, the fifth information block includes CSI.

[0595] As an embodiment, the fifth information block includes CRI.

[0596] As an embodiment, the fifth information block is earlier than the first information block in the time domain.

[0597] As an embodiment, the fifth information block is later than the first information block in the time domain.

[0598] As an embodiment, the fifth information block is used by a sender of the second information block to determine whether to indicate that the target reference signal resource is associated with the first function.

[0599] As an embodiment, the fifth information block indicates at least one reference signal resource suitable for being associated with the first function.

[0600] As an embodiment, the fifth information block indicates at least one reference signal resource that is not suitable for being associated with the first function.

[0601] As an embodiment, the fifth information block indicates at least one reference signal resource suitable for generating compressed CSI.

[0602] As an embodiment, the fifth information block indicates at least one reference signal resource that is not suitable for generating compressed CSI.

[0603] As an embodiment, measurement of the reference signal received in the target reference signal resource is used to generate a target pre-compression CSI, the target pre-compression CSI is used as an input of the first function to generate the target compressed CSI, and the target compressed CSI is used as an input of the second function to generate the target CSI; the fifth information block indicates the error between the target CSI and the target pre-compression CSI.

[0604] As a sub-embodiment of the above embodiment, the fifth information block implicitly indicates whether the target reference signal resource is suitable for being associated with the first function using the error.

[0605] As a sub-embodiment of the above embodiment, if the error is smaller than a first threshold, the target reference signal resource is suitable for being associated with the first function; if the error is larger than the first threshold, the target reference signal resource is not suitable for being associated with the first function.

[0606] As a sub-embodiment of the above embodiment, the sender of the second information block determines whether to indicate that the target reference signal resource is associated with the first function according to the error.

[0607] As an embodiment, the fifth information block indicates whether the target reference signal resource is suitable for being associated with the first enhancement function.

[0608] Embodiment 17

[0609] Embodiment 17 illustrates a structural block diagram of a processing device used in a first node device according to an embodiment of the present application; Fig.17 As shown in the attached Fig.17 In the embodiment, the processing device 1700 in the first node device includes a first receiver 1701 and a first transmitter 1702.

[0610] In Embodiment 17, the first receiver 1701 receives the first information block and the second information block; the first transmitter 1702 transmits the third information block.

[0611] In Embodiment 17, the first information block indicates a first function, the second information block indicates whether a target reference signal resource is associated with the first function; the third information block indicates a first compressed CSI, and the first pre-compression CSI is used as an input of the first function to generate the first compressed CSI.

[0612] As an embodiment, the first node is a user equipment; the input of the first function includes uncompressed CSI, and the output of the first function includes compressed CSI; the first pre-compression CSI is used by the first node as the input of the first function to generate the first compressed CSI; the first pre-compression CSI includes a first matrix, and the first compressed CSI includes a second matrix, and the product of the number of rows and the number of columns of the second matrix is ​​less than the product of the number of rows and the number of columns of the first matrix.

[0613] As an embodiment, the first transmitter 1702 sends a fourth information block, wherein the fourth information block indicates a second compressed CSI, and the second pre-compression CSI is used as an input of a first enhancement function to generate the second compressed CSI; wherein the first function is used to generate the first enhancement function; and the second information block indicates whether the target reference signal resource is associated with the first enhancement function.

[0614] As an embodiment, the second information block indicates the first enhancement function.

[0615] As an embodiment, the first transmitter 1702 sends a reference signal in a first reference signal resource pool, and the first reference signal resource pool includes at least one reference signal resource; wherein the receiving behavior in the first reference signal resource pool is used by the target receiver of the first reference signal resource pool to determine the first function.

[0616] As an embodiment, the second information block includes a first transmission configuration state, and the first transmission configuration state implicitly indicates whether the target reference signal resource is associated with the first function.

[0617] As an embodiment, the first transmitter 1702 sends a fifth information block, and the fifth information block indicates whether the target reference signal resource is suitable for being associated with the first function.

[0618] As an embodiment, the first receiver 1701 receives a reference signal in the target reference signal resource.

[0619] As an embodiment, the first node device is a user equipment.

[0620] As an embodiment, the first node device is a relay node device.

[0621] As an embodiment, the first receiver 1701 includes at least one of {antenna 452, receiver 454, receiving processor 456, multi-antenna receiving processor 458, controller / processor 459, memory 460, data source 467} in Embodiment 4.

[0622] As an embodiment, the first transmitter 1702 includes at least one of {antenna 452, transmitter 454, transmit processor 468, multi-antenna transmit processor 457, controller / processor 459, memory 460, data source 467} in Embodiment 4.

[0623] Embodiment 18

[0624] Embodiment 18 illustrates a structural block diagram of a processing device used in a second node device according to an embodiment of the present application; Fig.18 As shown in the attached Fig.18 In the embodiment, the processing device 1800 in the second node device includes a second transmitter 1801 and a second receiver 1802.

[0625] In Embodiment 18, the second transmitter 1801 transmits the first information block and the second information block; the second receiver 1802 receives the third information block.

[0626] In Example 18, the first information block indicates a first function, the second information block indicates whether the target reference signal resource is associated with the first function; the third information block indicates a first compressed CSI, and the first pre-compression CSI is used as an input of the first function to generate the first compressed CSI.

[0627] As an embodiment, the second node is a base station; the input of the first function includes uncompressed CSI, and the output of the first function includes compressed CSI; the first pre-compression CSI is used by the sender of the third information block as the input of the first function to generate the first compressed CSI; the first pre-compression CSI includes a first matrix, and the first compressed CSI includes a second matrix, and the product of the number of rows and the number of columns of the second matrix is ​​less than the product of the number of rows and the number of columns of the first matrix.

[0628] As an embodiment, the second receiver 1802 receives a fourth information block, the fourth information block indicating a second compressed CSI, and the second pre-compression CSI is used as an input of a first enhancement function to generate the second compressed CSI; wherein the first function is used to generate the first enhancement function; and the second information block indicates whether the target reference signal resource is associated with the first enhancement function.

[0629] As an embodiment, the second information block indicates the first enhancement function.

[0630] As an embodiment, the second receiver 1802 receives a reference signal in a first reference signal resource pool, wherein the first reference signal resource pool includes at least one reference signal resource; wherein the receiving behavior in the first reference signal resource pool is used by the second node to determine the first function.

[0631] As an embodiment, the second information block includes a first transmission configuration state, and the first transmission configuration state implicitly indicates whether the target reference signal resource is associated with the first function.

[0632] As an embodiment, the second receiver 1802 receives a fifth information block, and the fifth information block indicates whether the target reference signal resource is suitable for being associated with the first function.

[0633] As an embodiment, the second transmitter 1801 sends a reference signal in the target reference signal resource.

[0634] As an embodiment, the device in the second node is a base station device.

[0635] As an embodiment, the device in the second node is a user equipment.

[0636] As an embodiment, the device in the second node is a relay node device.

[0637] As an embodiment, the second transmitter 1801 includes at least one of {antenna 420, transmitter 418, transmit processor 416, multi-antenna transmit processor 471, controller / processor 475, memory 476} in Embodiment 4.

[0638] As an embodiment, the second receiver 1802 includes at least one of {antenna 420, receiver 418, receiving processor 470, multi-antenna receiving processor 472, controller / processor 475, memory 476} in Embodiment 4.

[0639] A person of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of software and hardware combination. The user equipment, terminal and UE in the present application include but are not limited to drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication equipment,, transportation, vehicles, RSU, wireless sensors, Internet cards, Internet of Things terminals, RFID terminals, NB-IOT terminals, MTC (Machine Type Communication, Machine Type Communication) terminals, eMTC (enhancedMTC, enhanced MTC) terminals, data cards, Internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablet computers and other wireless communication devices. The base stations or system equipment in this application include but are not limited to macrocell base stations, microcell base stations, small cell base stations, home base stations, relay base stations, eNB, gNB, TRP (Transmitter Receiver Point), GNSS, relay satellites, satellite base stations, aerial base stations, RSU (Road Side Unit), drones, test equipment, such as wireless communication equipment such as transceivers or signaling testers that simulate some functions of base stations.

[0640] It should be understood by those skilled in the art that the present invention may be implemented in other specified forms without departing from its core or essential features. Therefore, the embodiments disclosed herein should be considered illustrative rather than restrictive in any way. The scope of the invention is determined by the appended claims rather than the preceding description, and all modifications within their equivalent meanings and regions are considered to be included therein.

Claims

1. A first node device used for wireless communication, characterized in that: include: A first receiver receives a first information block and a second information block, wherein the first information block indicates a first function, and the second information block indicates whether a target reference signal resource is associated with the first function, and the target reference signal resource is a CSI-RS resource; A first transmitter sends a third information block, wherein the third information block indicates a first compressed CSI, and a first pre-compression CSI is used as an input of the first function to generate the first compressed CSI; The QCL relationship of the target reference signal resource is used to determine whether the target reference signal resource is associated with the first function; or, when the target reference signal resource is associated with the first function, the second information block also indicates which RS ports of the target reference signal resource are associated with the first function.

2. The first node device according to claim 1, characterized in that: The first transmitter sends a fourth information block, the fourth information block indicating a second compressed CSI, and the second pre-compression CSI is used as an input to a first enhancement function to generate the second compressed CSI; wherein the first function is used to generate the first enhancement function; the second information block indicates whether the target reference signal resource is associated with the first enhancement function; measurements of the target reference signal resource are used to generate the target pre-compression CSI; if the target reference signal resource is associated with both the first function and the first enhancement function, the target pre-compression CSI is used as an input to the first enhancement function to generate the target compressed CSI; if the target reference signal resource is not associated with the first enhancement function but is associated with the first function, the target pre-compression CSI is used as an input to the first function to generate the target compressed CSI.

3. The first node device according to claim 2, characterized in that: The second information block indicates the first enhancement function.

4. The first node device according to any one of claims 1 to 3, characterized in that: The first transmitter sends a reference signal in a first reference signal resource pool, the first reference signal resource pool including at least one reference signal resource; wherein a reception behavior in the first reference signal resource pool is used by a target receiver of the first reference signal resource pool to determine the first function.

5. The first node device according to any one of claims 1 to 4, characterized in that: The second information block includes a first transmission configuration state, and the first transmission configuration state implicitly indicates whether the target reference signal resource is associated with the first function.

6. The first node device according to any one of claims 1 to 5, characterized in that: The first transmitter transmits a fifth information block, wherein the fifth information block indicates whether the target reference signal resource is suitable for being associated with the first function.

7. A second node device used for wireless communication, characterized in that: include: A second transmitter sends a first information block and a second information block, wherein the first information block indicates a first function, and the second information block indicates whether a target reference signal resource is associated with the first function, and the target reference signal resource is a CSI-RS resource; A second receiver receives a third information block, wherein the third information block indicates a first compressed CSI, and a first pre-compression CSI is used as an input of the first function to generate the first compressed CSI; The QCL relationship of the target reference signal resource is used to determine whether the target reference signal resource is associated with the first function; or, when the target reference signal resource is associated with the first function, the second information block also indicates which RS ports of the target reference signal resource are associated with the first function.

8. The second node device according to claim 7, characterized in that: The second receiver receives a fourth information block, the fourth information block indicating a second compressed CSI, and the second pre-compression CSI is used as an input of the first enhancement function to generate the second compressed CSI; The first function is used to generate the first enhancement function; the second information block indicates whether the target reference signal resource is associated with the first enhancement function; the measurement of the target reference signal resource is used to generate the target pre-compression CSI; if the target reference signal resource is associated with both the first function and the first enhancement function, the target pre-compression CSI is used as an input of the first enhancement function to generate the target compressed CSI; if the target reference signal resource is not associated with the first enhancement function but is associated with the first function, the target pre-compression CSI is used as an input of the first function to generate the target compressed CSI.

9. The second node device according to claim 8, characterized in that: The second information block indicates the first enhancement function.

10. The second node device according to any one of claims 7 to 9, characterized in that: The second receiver receives a reference signal in a first reference signal resource pool, wherein the first reference signal resource pool includes at least one reference signal resource; The receiving behavior in the first reference signal resource pool is used by the second node to determine the first function.

11. The second node device according to any one of claims 7 to 10, characterized in that: The second information block includes a first transmission configuration state, and the first transmission configuration state implicitly indicates whether the target reference signal resource is associated with the first function.

12. The second node device according to any one of claims 7 to 11, characterized in that: The second receiver receives a fifth information block indicating whether the target reference signal resource is suitable for being associated with the first function.

13. A method in a first node for wireless communication, characterized in that: include: receiving a first information block, the first information block indicating a first function; receiving a second information block, wherein the second information block indicates whether a target reference signal resource is associated with the first function, the target reference signal resource being a CSI-RS resource; Sending a third information block, where the third information block indicates a first compressed CSI, and the first pre-compression CSI is used as an input of the first function to generate the first compressed CSI; The QCL relationship of the target reference signal resource is used to determine whether the target reference signal resource is associated with the first function; or, when the target reference signal resource is associated with the first function, the second information block also indicates which RS ports of the target reference signal resource are associated with the first function.

14. The method in the first node according to claim 13, characterized in that: include: Sending a fourth information block, where the fourth information block indicates a second compressed CSI, and the second pre-compression CSI is used as an input of the first enhancement function to generate the second compressed CSI; The first function is used to generate the first enhancement function; the second information block indicates whether the target reference signal resource is associated with the first enhancement function; the measurement of the target reference signal resource is used to generate the target pre-compression CSI; if the target reference signal resource is associated with both the first function and the first enhancement function, the target pre-compression CSI is used as an input of the first enhancement function to generate the target compressed CSI; if the target reference signal resource is not associated with the first enhancement function but is associated with the first function, the target pre-compression CSI is used as an input of the first function to generate the target compressed CSI.

15. The method in the first node according to claim 14, characterized in that: The second information block indicates the first enhancement function.

16. The method in the first node according to any one of claims 13 to 15, characterized in that: include: Sending a reference signal in a first reference signal resource pool, wherein the first reference signal resource pool includes at least one reference signal resource; The receiving behavior in the first reference signal resource pool is used by a target receiver of the first reference signal resource pool to determine the first function.

17. The method in the first node according to any one of claims 13 to 16, characterized in that: The second information block includes a first transmission configuration state, and the first transmission configuration state implicitly indicates whether the target reference signal resource is associated with the first function.

18. The method in the first node according to any one of claims 13 to 17, characterized in that: include: A fifth information block is sent, wherein the fifth information block indicates whether the target reference signal resource is suitable for being associated with the first function.

19. A method in a second node for wireless communication, characterized in that: include: sending a first information block, wherein the first information block indicates a first function; sending a second information block, where the second information block indicates whether a target reference signal resource is associated with the first function, the target reference signal resource being a CSI-RS resource; receiving a third information block, wherein the third information block indicates a first compressed CSI, and a first pre-compression CSI is used as an input of the first function to generate the first compressed CSI; The QCL relationship of the target reference signal resource is used to determine whether the target reference signal resource is associated with the first function; or, when the target reference signal resource is associated with the first function, the second information block also indicates which RS ports of the target reference signal resource are associated with the first function.

20. The method in the second node according to claim 19, characterized in that: include: receiving a fourth information block, wherein the fourth information block indicates a second compressed CSI, and the second pre-compression CSI is used as an input of the first enhancement function to generate the second compressed CSI; The first function is used to generate the first enhancement function; the second information block indicates whether the target reference signal resource is associated with the first enhancement function; the measurement of the target reference signal resource is used to generate the target pre-compression CSI; if the target reference signal resource is associated with both the first function and the first enhancement function, the target pre-compression CSI is used as an input of the first enhancement function to generate the target compressed CSI; if the target reference signal resource is not associated with the first enhancement function but is associated with the first function, the target pre-compression CSI is used as an input of the first function to generate the target compressed CSI.

21. The method in the second node according to claim 20, characterized in that: include: The second information block indicates the first enhancement function.

22. The method in the second node according to any one of claims 19 to 21, characterized in that: receiving a reference signal in a first reference signal resource pool, wherein the first reference signal resource pool includes at least one reference signal resource; The receiving behavior in the first reference signal resource pool is used by the second node to determine the first function.

23. The method in the second node according to any one of claims 19 to 22, characterized in that: include: The second information block includes a first transmission configuration state, and the first transmission configuration state implicitly indicates whether the target reference signal resource is associated with the first function.

24. The method in the second node according to any one of claims 19 to 23, characterized in that: A fifth information block is received, the fifth information block indicating whether the target reference signal resource is suitable for being associated to the first function.

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