CN115549877A

CN115549877A - Method and apparatus in a node used for wireless communication

Info

Publication number: CN115549877A
Application number: CN202110779267.5A
Authority: CN
Inventors: 吴克颖; 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2021-06-30
Filing date: 2021-07-09
Publication date: 2022-12-30

Abstract

A method and apparatus in a node used for wireless communication is disclosed. A first node receives a reference signal in a first sub-pool of reference signal resources; determining a first function according to the reception behavior in the first sub-pool of reference signal resources; transmitting a first block of information, the first block of information being used to determine the first function; receiving a second information block, the second information block being used to determine whether a target reference signal resource is associated to the first function; transmitting a third information block indicating first compressed CSI used as an input to the first function to generate first CSI. The method can flexibly configure the relation between the reference signal and the AI algorithm/parameter, select the optimal AI algorithm/parameter to compress/decompress the CSI based on a certain reference signal, and optimize the CSI feedback performance.

Description

Method and apparatus in a node used for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission method and apparatus for a wireless signal in a wireless communication system supporting a cellular network.

Background

The multi-antenna technology is a key technology in 3GPP (3 rd 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 a communication node, such as a base station or a UE (User Equipment). The plurality of antennas form a beam pointing in a specific direction through multi-antenna processing such as precoding and/or beamforming, thereby improving communication quality. In downlink multi-antenna transmission, a UE (User Equipment) generally needs to feed back CSI (Channel State Information) to assist a base station to perform precoding and/or beamforming. As the number of antennas increases, the overhead of CSI feedback also increases. Various enhanced multi-antenna technologies, such as multi-user MIMO application, put higher requirements on feedback accuracy, thereby further increasing feedback overhead.

In 3GPP ran #88e conference and 3GPP R (release) 18work, there has been a wide attention and discussion about the application of ML (Machine learning)/AI (Artificial Intelligence) in the physical layer of a wireless communication system. The precision and overhead of simultaneously solving CSI feedback using ML/AI versus CSI compression is widely recognized as one of the important applications of ML/AI in the physical layer.

Disclosure of Invention

In the AI algorithm, the training (training) process is very important, directly affecting the performance of the AI algorithm. The applicant finds through research that reference signals beamformed by different beams have different requirements on the training process of AI. Compressing CSI obtained based on different reference signals with the same set of trained AI parameters results in different performance. How to adapt between the reference signal and the AI algorithm/parameter to optimize CSI feedback performance is a problem to be solved.

In view of the above, the present application discloses a solution. It should be noted that, although the above description uses cellular network as an example, the present application is also applicable to other scenarios such as V2X (Vehicle-to-event) and sidelink (sidelink) transmission, and achieves the technical effect similar to that in the cellular network scenario. Furthermore, the adoption of a unified solution for different scenarios (including but not limited to cellular network, V2X, and sidelink transmission) also helps to reduce hardware complexity and cost. Without conflict, embodiments and features in embodiments in a first node of the present application may be applied to a second node and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

As an example, the term (telematics) in the present application is explained with reference to the definition of the specification protocol TS36 series of 3 GPP.

As an example, the terms in the present application are explained with reference to the definitions of the 3GPP specification protocol TS38 series.

As an example, the terms in the present application are explained with reference to the definitions of the 3GPP specification protocol TS37 series.

As an example, the terms in the present application are explained with reference to the definition of the specification protocol of IEEE (Institute of Electrical and Electronics Engineers).

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

receiving a reference signal in a first sub-pool of reference signal resources, the first sub-pool of reference signal resources comprising at least one reference signal resource;

determining a first function according to the reception behavior in the first sub-pool of reference signal resources;

transmitting a first block of information, the first block of information being used to determine the first function;

receiving a second information block, the second information block being used to determine whether a target reference signal resource is associated to the first function;

transmitting a third information block indicating first compressed CSI used as an input to the first function to generate first CSI.

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

As an example of the way in which the device may be used, the characteristics of the method comprise: the first function comprises an AI algorithm and a set of parameters used in the AI algorithm obtained by training; the second information block indicates whether CSI obtained for the target reference signal resource is compressed/decompressed by the first function.

As an example, the benefits of the above method include: the relation between the reference signal and the AI algorithm/parameter is flexibly configured, and the optimal AI algorithm/parameter is selected to compress/decompress CSI based on a certain reference signal, so that the CSI feedback performance is optimized.

According to one aspect of the application, the method is characterized by comprising the following steps:

determining a second function according to the reception behavior in the first sub-pool of reference signal resources;

wherein an output of the second function comprises the first compressed CSI.

transmitting a fourth information block indicating second compressed CSI used as input to a first enhancement function to generate second CSI;

wherein the first function is used to generate the first enhancement function; the second information block is used to determine whether the target reference signal resource is associated to the first enhancement function.

As an example, the benefits of the above method include: and AI algorithms with different complexities are adopted to compress/decompress CSI based on different reference signals, so that the complexity and the performance of the algorithm/training are better balanced.

According to an aspect of the application, the second information block indicates at least part of a characteristic of the first function.

According to an aspect of the application, the second information block indicates at least part of a characteristic of the first enhancement function.

According to an aspect of the application, it is characterized in that the second information block comprises a first transmission configuration state implicitly indicating whether the target reference signal resource is associated to the first function.

As an example, the benefits of the above method include: the relation between the reference signal and the AI algorithm/parameter is indicated in an implicit mode, and the signaling overhead is reduced.

transmitting a fifth information block indicating whether the target reference signal resource is suitable to be associated to the first function.

As an embodiment, the benefits of the above method include: the UE is allowed to adjust the corresponding relation between the reference signal indicated by the base station and the AI algorithm/parameter, and the matching degree between the reference signal and the AI algorithm/parameter is further optimized, so that the CSI feedback performance is optimized.

According to one aspect of the application, the first node is a user equipment.

According to an aspect of the application, it is characterized in that the first node is a relay node.

The application discloses a method in a second node used for wireless communication, characterized by comprising:

transmitting a reference signal in a first sub-pool of reference signal resources, the first sub-pool of reference signal resources comprising at least one reference signal resource, a target recipient of the first sub-pool of reference signal resources determining a first function according to a reception behavior in the first sub-pool of reference signal resources;

receiving a first block of information, the first block of information being used to determine the first function;

transmitting a second information block, the second information block being used to determine whether a target reference signal resource is associated to the first function;

receiving a third information block indicating first compressed CSI, the first compressed CSI being used as an input to the first function to generate first CSI.

According to one aspect of the present application, the target recipient of the first sub-pool of reference signal resources determines a second function according to the reception behavior in the first sub-pool of reference signal resources; wherein an output of the second function comprises the first compressed CSI.

receiving a fourth information block indicating second compressed CSI used as input to a first enhancement function to generate second CSI;

receiving a fifth information block indicating whether the target reference signal resource is suitable to be associated to the first function.

According to an aspect of the application, it is characterized in that the second node is a base station.

According to one aspect of the application, the second node is a user equipment.

According to an aspect of the application, it is characterized in that the second node is a relay node.

The application discloses a first node device used for wireless communication, characterized by comprising:

a first processor that receives reference signals in a first sub-pool of reference signal resources, the first sub-pool of reference signal resources comprising at least one reference signal resource, and determines a first function according to the receiving behavior in the first sub-pool of reference signal resources;

a first transmitter to transmit a first block of information, the first block of information being used to determine the first function;

the first processor receiving a second information block, the second information block being used to determine whether a target reference signal resource is associated to the first function;

the first transmitter to transmit a third information block indicating first compressed CSI used as an input to the first function to generate first CSI.

The present application discloses a second node device used for wireless communication, comprising:

a second transmitter to transmit reference signals in a first sub-pool of reference signal resources, the first sub-pool of reference signal resources comprising at least one reference signal resource, a target recipient of the first sub-pool of reference signal resources determining a first function according to a reception behavior in the first sub-pool of reference signal resources;

a first receiver that receives a first block of information, the first block of information being used to determine the first function;

the second transmitter transmitting a second information block, the second information block being used to determine whether a target reference signal resource is associated to the first function;

the first receiver receives a third information block indicating first compressed CSI used as input to the first function to generate first CSI.

As an example, compared with the conventional scheme, the method has the following advantages:

the relation between the reference signal and the AI algorithm/parameter is flexibly configured, and the optimal AI algorithm/parameter is selected to compress/decompress CSI based on a certain reference signal, so that the CSI feedback performance is optimized.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof with reference to the accompanying drawings in which:

fig. 1 shows a flow diagram of a first sub-pool of reference signal resources, a first function, a first information block, a second information block and a third information block according to an embodiment of the application;

FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

figure 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application;

FIG. 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application;

FIG. 5 shows a flow diagram of a transmission according to an embodiment of the present application;

fig. 6 shows a schematic diagram of the relationship between the first CSI and the first compressed CSI according to an embodiment of the present application;

FIG. 7 shows a schematic diagram of a first function according to an embodiment of the present application;

FIG. 8 shows a diagram of a second function according to an embodiment of the present application;

fig. 9 shows a schematic diagram of the relationship between the first CSI, the first compressed CSI, the first function and the second function according to an embodiment of the application;

FIG. 10 shows a schematic diagram of a first enhancement function according to an embodiment of the present application;

FIG. 11 shows a schematic diagram of a second enhancement function according to an embodiment of the present application;

fig. 12 shows a schematic diagram of the relationship between the second CSI, the second compressed CSI, the first enhancement function and the second enhancement function according to an embodiment of the application;

FIG. 13 shows a schematic diagram of a second information block indicating at least part of a characteristic of a first function according to an embodiment of the application;

fig. 14 shows a schematic diagram of a second information block indicating at least part of the characteristics of a first enhancement function according to an embodiment of the application;

fig. 15 shows a schematic diagram indicating implicitly whether a target reference signal resource is associated to a first function of a first transmission configuration state according to an embodiment of the application;

fig. 16 shows a schematic diagram of a fifth information block indicating whether a target reference signal resource is suitable to be associated to a first function according to an embodiment of the application;

FIG. 17 shows a block diagram of a processing apparatus for use in a first node device according to an embodiment of the present application;

fig. 18 shows a block diagram of a processing apparatus for use in a second node device according to an embodiment of the present application.

Detailed Description

The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments in the present application can be arbitrarily combined with each other without conflict.

Example 1

Embodiment 1 illustrates a flowchart of a first reference signal resource sub-pool, a first function, a first information block, a second information block, and a third information block according to an embodiment of the present application, as shown in fig. 1. In 100 shown in fig. 1, each block represents a step. In particular, the order of steps in blocks does not represent a particular chronological relationship between the various steps.

In embodiment 1, the first node in the present application receives a reference signal in a first sub-pool of reference signal resources in step 101, where the first sub-pool of reference signal resources includes at least one reference signal resource; determining a first function from the reception behavior in the first sub-pool of reference signal resources in step 102; transmitting a first information block in step 103, said first information block being used for determining said first function; receiving a second information block in step 104, the second information block being used for determining whether a target reference signal resource is associated to the first function; a third information block is sent in step 105, the third information block indicating a first compressed CSI, which is used as an input to the first function to generate a first CSI.

For one embodiment, the first sub-pool of reference signal resources comprises a plurality of reference signal resources.

For one embodiment, the first sub-pool of reference signal resources comprises only 1 reference signal resource.

As an embodiment, one Reference Signal resource including a CSI-RS (Channel State Information-Reference Signal) resource exists in the first sub-pool of Reference Signal resources.

As an embodiment, any one of the first sub-pool of reference signal resources is a CSI-RS resource.

As an embodiment, there exists one reference Signal resource in the first sub-pool of reference Signal resources, which includes SS (synchronization Signal)/PBCH (physical broadcast channel) Block resources.

As an embodiment, any reference signal resource in the first sub-pool of reference signal resources is a CSI-RS resource or a SS/PBCH Block resource.

As an embodiment, any one of the Reference Signal resources in the first sub-pool of Reference Signal resources includes an SRS (Sounding Reference Signal) resource.

As an embodiment, one Reference signal resource in the first sub-pool of Reference signal resources includes a DMRS (DeModulation Reference Signals) port.

As an embodiment, there is one Reference Signal resource in the first Reference Signal resource sub-pool including a PTRS (Phase-Tracking Reference Signal) port.

For one embodiment, any reference signal resource in the first sub-pool of reference signal resources comprises at least one RS port (port).

For one embodiment, the RS ports include CSI-RS ports.

For one embodiment, the RS port includes an antenna port.

As one embodiment, the RS ports include at least one of DMRS ports, PTRS ports or SRS ports.

As an embodiment, any reference signal resource in the first sub-pool of reference signal resources corresponds to a first class index, and the first class index is a non-negative integer; and the values of the first class indexes corresponding to any two reference signal resources in the first reference signal resource sub-pool are equal.

As an embodiment, the reference signal resources in the first sub-pool of reference signal resources belong to the same Carrier (Carrier).

As an embodiment, the reference signal resources in the first sub-pool of reference signal resources belong to the same BWP (BandWidth Part).

As an embodiment, the reference signal resources in the first sub-pool of reference signal resources belong to the same serving cell.

As an embodiment, there are two reference signal resources in the first sub-pool of reference signal resources belonging to different carriers.

As an embodiment, there are two reference signal resources in the first sub-pool of reference signal resources belonging to different BWPs.

As an embodiment, there are two reference signal resources in the first sub-pool of reference signal resources belonging to different serving cells.

As an embodiment, the presence of one reference signal resource in the first sub-pool of reference signal resources is aperiodic.

As an embodiment, the presence of one reference signal resource in the first sub-pool of reference signal resources is periodic.

As an embodiment, the second information block indicates a first reference signal resource pool, any reference signal resource in the first reference signal resource sub-pool belongs to the first reference signal resource pool, the first reference signal resource pool comprises at least one reference signal resource; the first node determines the first function from reference signals received in reference signal resources in the first pool of reference signal resources.

As one embodiment, the first information block indicates the first function.

As an embodiment, the first information block indicates the first function determined from the reception behavior in the first sub-pool of reference signal resources.

As an embodiment, the first information block is carried by higher layer (high layer) signaling.

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

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

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

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

As an embodiment, the first information block is carried by a measurement report message (MeasurementReport message).

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

As an embodiment, the CHannel occupied by the first information block includes a PUSCH (Physical Uplink Shared CHannel).

As an embodiment, the Channel occupied by the first information block includes a PUCCH (Physical Uplink Control Channel).

As an embodiment, the Channel occupied by the first information block includes an UL-SCH (Uplink Shared Channel).

As an embodiment, the second information block is carried by higher layer (higher layer) signaling.

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

As an embodiment, the second information block is carried by a MAC CE.

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

As an embodiment, the second information block is carried by RRC signaling and MAC CE together.

As an embodiment, the second information block is carried by RRC signaling and physical layer signaling together.

As an embodiment, the second information block is carried by one IE.

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

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

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

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

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

For one embodiment, the target reference signal resource comprises a CSI-RS resource.

For one embodiment, the target reference signal resource is a CSI-RS resource.

For one embodiment, the target reference signal resource comprises a SS/PBCH Block resource.

For one embodiment, the target reference signal resource is a CSI-RS resource or a SS/PBCH Block resource.

As an embodiment, the target reference signal resource includes an SRS resource.

As one embodiment, the target reference signal resource includes a DMRS port.

For one embodiment, the target reference signal resource includes a PTRS port.

For one embodiment, the target reference signal resource includes at least one RS port.

As one embodiment, the target reference signal resource is aperiodic.

As one embodiment, the target reference signal resource is periodic.

As an embodiment, one occurrence of the target reference signal resource in the time domain is earlier than the second information block.

As an embodiment, one occurrence of the target reference signal resource in the time domain is later than the second information block.

As an embodiment, there is one occurrence of one reference signal resource in the first sub-pool of reference signal resources in the time domain earlier than one occurrence of the target reference signal resource in the time domain.

As an embodiment, there is one occurrence of one reference signal resource in the first sub-pool of reference signal resources in the time domain later than one occurrence of the target reference signal resource in the time domain.

For one embodiment, the first sub-pool of reference signal resources comprises the target reference signal resource.

For one embodiment, the first sub-pool of reference signal resources does not include the target reference signal resource.

As one embodiment, the second information block indicates the target reference signal resource.

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

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

As an embodiment, the second information block indicates an identity of the target reference signal resource.

For one embodiment, the identification of the target reference signal resource includes NZP-CSI-RS-resource id or SSB-Index.

As an embodiment, the second information block indicates whether the target reference signal resource is associated to the first function.

As an embodiment, the second information block indicates that the target reference signal resource is associated to the first function.

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

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

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

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

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

As an embodiment, time-frequency resources occupied by the target reference signal resources are used for determining whether the target reference signal resources are associated to the first function.

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

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

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 to the first function.

As an embodiment, the target reference signal resource belongs to the first sub-pool of reference signal resources, the second information block indicates which reference signal resources of the first sub-pool of reference signal resources are associated to the first function.

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

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

As a sub-embodiment of the above embodiment, any one of the M1 functions includes a decoder of a neural network for CSI compression.

As a sub-embodiment of the foregoing embodiment, any two different functions of the M1 functions include different at least one of a convolution kernel, a convolution kernel size, a number of convolution layers, a convolution step size, a pooling function, a pooling kernel size, a pooling kernel step size, a parameter of a pooling function, an activation function, a threshold of an activation function, a number of feature maps, or a weight between feature maps.

As an embodiment, when the second information block indicates that the target reference signal resources are associated to the first function, the second information block further indicates which RS ports of the target reference signal resources are associated to the first function.

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

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

As an embodiment, the phrase that the meaning of the target reference signal resource being associated to the first function comprises: CSI obtained based on channel measurements for reference signals received in the target reference signal resource is to be used as an input to the first function.

As a sub-embodiment of the above embodiment, the CSI comprises compressed CSI.

As an embodiment, the phrase that the meaning of the target reference signal resource being associated to the first function comprises: the first node is to obtain channel measurements for calculating an input of the first function based on reference signals received in the target reference signal resource.

As an embodiment, the phrase that the meaning of the target reference signal resource being associated to the first function comprises: the first function is to be used to recover CSI obtained based on channel measurements for reference signals received in the target reference signal resource.

As an embodiment, the phrase that the meaning of the target reference signal resource being associated to the first function comprises: the first function is to be used to recover information of a channel experienced by a reference signal received in the target reference signal resource.

As an embodiment, the phrase that the target reference signal resource is not associated to the meaning of the first function includes: CSI obtained based on channel measurements for reference signals received in the target reference signal resource is not used as an input to the first function.

As a sub-embodiment of the above embodiment, the CSI comprises compressed CSI.

As an embodiment, the phrase that the target reference signal resource is not associated to the meaning of the first function comprises: the first node is to obtain channel measurements for calculating the input of the first function not based on reference signals received in the target reference signal resource.

As an embodiment, the phrase that the target reference signal resource is not associated to the meaning of the first function includes: the first function is not used to recover CSI obtained based on channel measurements for reference signals received in the target reference signal resource.

As an embodiment, the phrase that the target reference signal resource is not associated to the meaning of the first function includes: the first function is not used to recover information of a channel experienced by a reference signal received in the target reference signal resource.

As an embodiment, measurements for reference signals received in the target reference signal resources are not used for generating the first compressed CSI if the target reference signal resources are not associated to the first function.

As an embodiment, the first node does not obtain channel measurements used for calculating the first compressed CSI based on reference signals received in the target reference signal resources if the target reference signal resources are not associated to the first function.

As an embodiment, if only a part of the RS ports of the target reference signal resource is associated to the first function, the first node will obtain channel measurements for calculating the input of the first function based only on reference signals received on the part of the RS ports.

As an embodiment, if only a part of the RS ports of the target reference signal resource is associated to the first function, the first function will only be used for recovering information of the channel experienced by the reference signal received on the part of the RS ports.

As an embodiment, if only a part of the RS ports of the target reference signal resource is associated to the first function, the first function will only be used for recovering CSI obtained based on channel measurements for reference signals received on the part of the RS ports.

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

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

As one embodiment, the third Information block includes CSI (Channel State Information).

As an embodiment, the CSI refers to: channel State Information.

As one embodiment, the CSI includes a channel matrix.

As an embodiment, the CSI includes information of one channel matrix.

As an embodiment, the CSI comprises amplitude and phase information of elements in a channel matrix.

As one embodiment, measurements for reference signals received in the first sub-pool of reference signal resources are used to generate the first compressed CSI.

As one embodiment, the first node obtains channel measurements for generating the first compressed CSI based on reference signals received in the first sub-pool of reference signal resources.

As one embodiment, the first compressed CSI is independent of measurements for reference signals received in the first sub-pool of reference signal resources.

As an embodiment, the second information block indicates that the target reference signal resources in which measurements for reference signals received are used to generate the first compressed CSI are associated to the first function.

As an embodiment, the second information block indicates that the target reference signal resources are associated to the first function, the first node obtains channel measurements for generating the first compressed CSI based on reference signals received in the target reference signal resources.

As one embodiment, the first compressed CSI is independent of measurements for reference signals received in the target reference signal resource.

As an embodiment, the second information block indicates that the target reference signal resource is not associated to the first function, the first compressed CSI being independent of measurements for reference signals received in the target reference signal resource.

As one embodiment, the second information block indicates that measurements for reference signals received in the target reference signal resource are not suitable for use in generating compressed CSI.

As one embodiment, the second information block indicates that measurements for reference signals received in the target reference signal resource are not used to generate compressed CSI.

As one embodiment, the second information block indicates that the first node does not obtain channel measurements for generating compressed CSI based on reference signals received in the target reference signal resource.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in fig. 2.

Fig. 2 illustrates a network architecture 200 of LTE (Long-Term Evolution), LTE-a (Long-Term Evolution Advanced), and future 5G systems. The network architecture 200 of LTE, LTE-a and future 5G systems is referred to as EPS (Evolved Packet System) 200. The 5G NR or LTE network architecture 200 may be referred to as a 5GS (5G System)/EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS/EPS200 may include one or more UEs (User Equipment) 201, one UE241 in secondary link (sildelink) communication with the UE201, an NG-RAN (next generation radio access network) 202,5GC (5G network Core, 5G Core network)/EPC (Evolved Packet Core) 210, hss (Home Subscriber Server)/UDM (Unified Data Management) 220, and internet service 230. The 5GS/EPS200 may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown in fig. 2, the 5GS/EPS200 provides packet switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit switched services. The NG-RAN202 includes NR (New Radio ) node bs (gnbs) 203 and other gnbs 204. The gNB203 provides user and control plane protocol terminations towards the UE201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The 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 (point of transmission reception), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the 5GC/EPC210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a gaming console, a drone, an aircraft, a narrowband physical network device, a machine type communication device, a terrestrial vehicle, an automobile, a wearable device, or any other similar functioning device. UE201 may also be referred to by those skilled in the art as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communications 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 terminology. The gNB203 is connected to the 5GC/EPC210 via an S1/NG interface. The 5GC/EPC210 includes MME (Mobility Management Entity)/AMF (Authentication Management domain)/SMF (Session Management Function) 211, other MME/AMF/SMF214, S-GW (serving Gateway)/UPF (User Plane Function) 212, and P-GW (Packet data Network Gateway)/UPF 213. The MME/AMF/SMF211 is a control node that handles signaling between the UE201 and the 5GC/EPC210. In general, MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet protocol) packets are transported through the S-GW/UPF212, which S-GW/UPF212 itself is connected to the P-GW/UPF213. The P-GW provides UE IP address allocation as well as other functions. The P-GW/UPF213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include internet, intranet, IMS (IP Multimedia Subsystem) and Packet switching (Packet switching) services.

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

As an embodiment, the second node in this application includes the gNB203.

For one embodiment, the wireless link between the UE201 and the gNB203 is a cellular network link.

As an embodiment, the sender of the reference signals in the first sub-pool of reference signal resources comprises the gNB203.

As an embodiment, the receiver of the reference signals in the first sub-pool of reference signal resources comprises the UE201.

As an embodiment, the sender of the first information block comprises the UE201.

As an embodiment, the recipient of the first information block comprises the gNB203.

As an embodiment, the sender of the second information block comprises the gNB203.

As an embodiment, the recipient of the second information block comprises the UE201.

As an embodiment, the sender of the third information block comprises the UE201.

As an embodiment, the recipient of the third information block comprises the gNB203.

As an embodiment, the UE201 supports at least part of the parameters of CNN (convolutional Neural Networks) determined for CSI reconstruction by training.

Example 3

Embodiment 3 illustrates a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application, as shown in fig. 3.

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and the control plane 300, fig. 3 showing the radio protocol architecture for the control plane 300 between a first communication node device (UE, RSU in gbb or V2X) and a second communication node device (gbb, RSU in UE or V2X), or between two UEs, in 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 herein as PHY301. Above the PHY301, a layer 2 (L2 layer) 305 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 ciphering data packets and provides handover support for a first communication node device between second communication node devices. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of 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 one cell between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. A 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 layers using RRC signaling between the second communication node device and the first communication node device. The radio protocol architecture of the user plane 350 comprises layer 1 (L1 layer) and layer 2 (L2 layer), the radio protocol architecture in the user plane 350 for the first and second communication node devices is substantially the same 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 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 further includes an SDAP (Service Data Adaptation Protocol) sublayer 356, and the SDAP sublayer 356 is responsible for mapping between QoS streams and Data Radio Bearers (DRBs) to support diversity of services. Although not shown, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.).

As an example, the wireless protocol architecture in fig. 3 is applicable to the first node in this application.

The radio protocol architecture of fig. 3 applies to the second node in this application as an example.

For one embodiment, the reference signals in the first sub-pool of reference signal resources are generated at the PHY301, or the PHY351.

For one embodiment, the first information block is generated from the PHY301, or the PHY351.

For one embodiment, the first information block is generated in the MAC sublayer 302 or the MAC sublayer 352.

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

For one embodiment, the second information block is generated in the MAC sublayer 302 or the MAC sublayer 352.

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

For one embodiment, the third information block is generated from the PHY301 or the PHY351.

Example 4

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 fig. 4. Fig. 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.

The first communications device 410 includes a controller/processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multiple antenna receive processor 472, a multiple antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.

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 multiple antenna transmit processor 457, a multiple antenna receive processor 458, a transmitter/receiver 454, and an antenna 452.

In the 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 radio resource allocation 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 on the coded and modulated symbols to generate one or more parallel streams. Transmit processor 416 then maps each parallel stream to subcarriers, multiplexes the modulated symbols with reference signals (e.g., pilots) in the time and/or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate the physical channels carrying the time-domain multicarrier symbol streams. The multi-antenna transmit processor 471 then performs transmit analog precoding/beamforming operations on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream that is then provided to a different antenna 420.

In a transmission from the first communications apparatus 410 to the second communications apparatus 450, each receiver 454 receives a signal through its respective antenna 452 at the second communications apparatus 450. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream that is provided to a receive processor 456. Receive processor 456 and multi-antenna receive processor 458 implement the various signal processing functions of the L1 layer. A multi-antenna receive processor 458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. Receive processor 456 converts the baseband multicarrier symbol stream after the receive analog precoding/beamforming operation from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals to be used for channel estimation are demultiplexed by the receive processor 456, and the data signals are subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any parallel streams destined for the second communication device 450. The symbols on each parallel stream are demodulated and recovered in a receive processor 456 and soft decisions are generated. The receive 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 a 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 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In the DL, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer data packets from the core network. The upper layer packet is 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 an Acknowledgement (ACK) and/or Negative Acknowledgement (NACK) protocol to support HARQ operations.

In a transmission from the second communication device 450 to the first communication device 410, a data source 467 is used at the second communication device 450 to provide upper layer data packets to a controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the transmit function at the first communication device 410 described in the 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, implementing 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 said first communications device 410. A transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding by a multi-antenna transmit processor 457 including codebook-based precoding and non-codebook based precoding, and beamforming, and the resulting parallel streams are then modulated by the transmit processor 468 into multi-carrier/single-carrier symbol streams, subjected to analog precoding/beamforming in the multi-antenna transmit processor 457, and provided to different antennas 452 via a transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and provides the radio frequency symbol stream to the antenna 452.

In a transmission from the second communication device 450 to the first communication device 410, the functionality at the first communication device 410 is similar to the receiving functionality 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 an rf signal through its respective antenna 420, converts the received rf signal to a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multiple antenna receive processor 472 collectively implement the functions of the L1 layer. The controller/processor 475 implements L2 layer functions. The controller/processor 475 can be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. The controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the second communication device 450. Upper layer data packets from the controller/processor 475 may be provided to a core network. Controller/processor 475 is also responsible for error detection using the ACK and/or NACK protocol to support HARQ operations.

As an embodiment, the second communication device 450 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 450 apparatus at least: receiving a reference signal in the first sub-pool of reference signal resources; determining the first function according to the reception behavior in the first sub-pool of reference signal resources; sending the first information block; receiving the second information block; and transmitting the third information block.

As an embodiment, the second communication device 450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving a reference signal in the first sub-pool of reference signal resources; determining the first function according to the reception behavior in the first sub-pool of reference signal resources; transmitting the first information block; receiving the second information block; transmitting the third information block

As an embodiment, the first communication device 410 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The first communication device 410 means at least: transmitting a reference signal in the first sub-pool of reference signal resources; receiving the first information block; transmitting the second information block; receiving the third information block.

As an embodiment, the first communication device 410 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: transmitting a reference signal in the first sub-pool of reference signal resources; receiving the first information block; transmitting the second information block; receiving the third information block.

As an embodiment, the first node in this application comprises the second communication device 450.

As an embodiment, the second node in this application comprises the first communication device 410.

As one example, at least one of the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller/processor 459, the memory 460, the data source 467 is used to receive reference signals in the first sub-pool of reference signal resources; { the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller/processor 475, the memory 476}, at least one of which is used to send reference signals in the first sub-pool of reference signal resources.

For one embodiment, at least one of the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller/processor 459, the memory 460, the data source 467 is configured to determine the first function based on the receive behavior in the first sub-pool of reference signal resources.

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

As one example, at least one of the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller/processor 459, the memory 460, the data source 467 is used to receive the second information block; at least one of the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller/processor 475, the memory 476 is used to transmit the second information block.

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

As an example, at least one of { the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller/processor 459, the memory 460, the data source 467} is used to determine the second function based on the reception behavior in the first sub-pool of reference signal resources.

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

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

Example 5

Embodiment 5 illustrates a flow chart of wireless transmission according to an embodiment of the present application, as shown in fig. 5. In fig. 5, the second node U1 and the first node U2 are communication nodes transmitting over an air interface. In fig. 5, the steps in blocks F51 to F55 are optional, respectively.

For the second node U1, a sixth information block is sent in step S5101; transmitting a reference signal in a first reference signal resource sub-pool in step S511; receiving a first information block in step S512; receiving a fifth information block in step S5102; transmitting a second information block in step S513; transmitting a reference signal in a target reference signal resource in step S5103; receiving a third information block in step S514; the fourth information block is received in step S5104.

For the first node U2, a sixth information block is received in step S5201; receiving a reference signal in a first sub-pool of reference signal resources in step S521; determining a first function from the reception behavior in the first sub-pool of reference signal resources in step S522; determining a second function from the reception behavior in the first sub-pool of reference signal resources in step S5202; transmitting the first information block in step S523; a fifth information block is transmitted in step S5203; receiving a second information block in step S524; receiving a reference signal in a target reference signal resource in step S5204; transmitting a third information block in step S525; the fourth information block is transmitted in step S5205.

In embodiment 5, the first sub-pool of reference signal resources comprises at least one reference signal resource; the first information block is used by the second node U1 to determine the first function; the second information block is used by the first node U2 to determine whether a target reference signal resource is associated to the first function; the third information block indicates a first compressed CSI that is used by the second node U1 as an input to the first function to generate a first CSI.

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

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

As an embodiment, the air interface between the second node U1 and the first node U2 comprises a radio interface between a base station device and a user equipment.

As an embodiment, the air interface between the second node U1 and the first node U2 comprises a radio interface between user equipment and user equipment.

As an embodiment, the second node U1 is a serving cell maintaining base station of the first node U2.

As one embodiment, the first information block is transmitted in PUSCH.

As an embodiment, the second information block is transmitted in a PDSCH (Physical Downlink Shared CHannel).

As an embodiment, the third information block is transmitted in PUSCH.

As an embodiment, the third information block is transmitted in PUCCH.

For one embodiment, the phrase means for receiving a reference signal in a first sub-pool of reference signal resources comprises: receiving a reference signal in each reference signal resource in the first sub-pool of reference signal resources.

For one embodiment, the phrase means for receiving a reference signal in a first sub-pool of reference signal resources comprises: for any reference signal resource in the first sub-pool of reference signal resources, receiving a reference signal transmitted according to configuration information of the any reference signal resource.

As an example, the step in block F51 in fig. 5 exists; the method in a first node used for wireless communication comprises: receiving a sixth information block; wherein the sixth information block indicates a first reference signal resource pool, any reference signal resource in the first reference signal resource sub-pool belongs to the first reference signal resource pool, and the first reference signal resource pool comprises at least one reference signal resource; the first node determines the first function from reference signals received in reference signal resources in the first pool of reference signal resources.

As an embodiment, the first node determines the first function only from reference signals received in reference signal resources in the first pool of reference signal resources.

As an embodiment, the first node receives reference signals in only the first sub-pool of reference signal resources in the first pool of reference signal resources.

As an embodiment, the sixth information block is carried by RRC signaling.

As an embodiment, the sixth information block is carried by a MAC CE.

As an embodiment, the sixth information block is carried by physical layer signaling.

As an embodiment, the sixth information block is carried by RRC signaling and MAC CE together.

As an embodiment, the sixth information block is carried by one IE.

As an embodiment, the name of the IE carrying the sixth information block includes "CSI-ReportConfig".

As an embodiment, the name of the IE carrying the sixth information block includes "CSI-ResourceConfig".

As an embodiment, the sixth information block and the second information block are carried by different fields of the same IE.

As an embodiment, the sixth information block and the second information block are carried by different IEs.

As one embodiment, the first sub-pool of reference signal resources is the first reference signal resource pool.

As an embodiment, there is one reference signal resource in the first reference signal resource pool that does not belong to the first reference signal resource sub-pool.

As an embodiment, any reference signal resource in the first reference signal resource pool corresponds to one of the first class indices; and the values of the first class indexes corresponding to any two reference signal resources in the first reference signal resource pool are equal.

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

As an embodiment, the reference signal resources in the first pool of reference signal resources belong to the same BWP.

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

As an embodiment, there are two reference signal resources in the first pool of reference signal resources belonging to different carriers.

As an embodiment, there are two reference signal resources in the first pool of reference signal resources belonging to different BWPs.

As an embodiment, there are two reference signal resources in the first pool of reference signal resources belonging to different serving cells.

As an example, the step in block F51 in fig. 5 is not present.

As an example, the step in block F52 in fig. 5 exists; the first node determining a second function according to reception behavior in the first sub-pool of reference signal resources; the output of the second function comprises the first compressed CSI.

As an embodiment, the first node determines the second function only from reference signals received in reference signal resources in the first pool of reference signal resources.

As an example, the step in block F53 in fig. 5 exists; the fifth information block indicates whether the target reference signal resource is suitable to be associated to the first function.

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

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

As an embodiment, the fifth information block and the first information block are carried by the same signaling.

As an example, the step in block F53 in fig. 5 does not exist.

As an example, the step in block F54 in fig. 5 exists; the first node receives a reference signal in the target reference signal resource, and the second node transmits a reference signal in the target reference signal resource.

As an example, the step in block F54 in fig. 5 does not exist.

As an example, the step in block F55 in fig. 5 exists; the fourth information block indicates a second compressed CSI used by the second node U1 as input to a first enhancement function to generate a second CSI; wherein the first function is used to generate the first enhancement function; the second information block is used by the first node U2 to determine whether the target reference signal resource is associated to the first enhancement function.

As an embodiment, the first function is used by the first node U2 to generate the first enhancement function.

As an embodiment, the first function is used by the second node U1 to generate the first enhancement function.

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

As an embodiment, the fourth information block includes CSI.

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

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

As an embodiment, the fourth information block is transmitted in PUSCH

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

Example 6

Embodiment 6 illustrates a schematic diagram of a relationship between first CSI and first compressed CSI according to an embodiment of the present application; as shown in fig. 6. In embodiment 6, the first compressed CSI as input to the first function is used to generate the first CSI.

As an embodiment, the first compressed CSI includes a PMI (Precoding Matrix Indicator).

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

For one embodiment, the first compressed CSI comprises a matrix.

For one embodiment, the first compressed CSI comprises a vector.

For one embodiment, the first compressed CSI includes information of a channel matrix.

As an embodiment, the first compressed CSI comprises amplitude and phase information of elements in a channel matrix.

As one embodiment, the first CSI is an output when the input to the first function is the first compressed CSI.

As one embodiment, the first CSI includes a PMI.

As an embodiment, the first CSI comprises one or more of CQI, CRI or RI.

For one embodiment, the first CSI includes a channel matrix.

As an embodiment, the first CSI comprises amplitude and phase information of elements in a channel matrix.

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

As one embodiment, the first CSI includes a first matrix, and the first compressed CSI includes a second matrix, a number of elements in the second matrix being smaller than a number of elements in the first matrix.

As a sub-embodiment of the above embodiment, a product of the number of rows and the number of columns of the second matrix is smaller than a product of the number of rows and the number of columns of the first matrix.

As a sub-embodiment of the above embodiment, the second matrix is a vector.

As an embodiment, the first CSI is composed of Q1 bits, the first compressed CSI is composed of Q2 bits, Q1 and Q2 are positive integers greater than 1, respectively, and Q1 is greater than Q2.

Example 7

Embodiment 7 illustrates a schematic diagram of a first function according to an embodiment of the present application; as shown in fig. 7. In embodiment 7, the first function includes K1 sub-functions, and K1 is a positive integer greater than 1. In fig. 7, the K1 subfunctions are represented by subfunctions # 0.., subfunctions # (K1-1), respectively.

As an embodiment, the first node determines the first function from the reception behavior in all reference signal resources in the first sub-pool of reference signal resources.

As an embodiment, the first node determines the first function from the reception behavior in only part of the reference signal resources in the first sub-pool of reference signal resources.

As one embodiment, said determining the meaning of the first function from said receiving behavior in said first sub-pool of reference signal resources comprises: measurements for reference signals received in the first sub-pool of reference signal resources are used to determine the first function.

As one embodiment, said determining the meaning of the first function from said receiving behavior in said first sub-pool of reference signal resources comprises: the first node obtains channel measurements for determining the first function based on reference signals received in the first sub-pool of reference signal resources.

As one embodiment, said determining the meaning of the first function from said receiving behavior in said first sub-pool of reference signal resources comprises: the first node obtains channel measurements for determining the first function based only on reference signals received in the first sub-pool of reference signal resources.

As one embodiment, the phrase determining the meaning of the first function from the receiving behavior in the first sub-pool of reference signal resources comprises: channel estimation values obtained by channel estimation for measurements of reference signals received in the first sub-pool of reference signal resources are used to determine the first function.

As one embodiment, the first function is non-linear.

As one embodiment, the input to the first function comprises compressed CSI and the output of the first function comprises recovered uncompressed CSI.

As an embodiment, a load of any primary input of the first function is smaller than a load of an output of the first function corresponding to the any primary input.

As an embodiment, the number of elements included in any one-time input of the first function is smaller than the number of elements included in an output of the first function corresponding to the any one-time input.

As one in the embodiment of the method, the first step, the first function includes a Neural Network (Neural Network).

As one embodiment, the first function includes a neural network for CSI compression.

As one embodiment, the first function includes a decoder of a neural network for CSI compression.

As an embodiment, the first function comprises a first set of parameters, the first set of parameters comprising at least one parameter.

As one embodiment, the K1 subfunctions include one or more of a convolution function, a pooling function, a cascading function, or an activation function.

As an embodiment, the first parameter set includes one or more of a convolution kernel (key), a pooling (Pooling) function, a parameter of a pooling function, an activation function, a threshold of an activation function, or a weight between feature maps (feature maps).

As an embodiment, the first parameter group includes K1 parameter sub-groups, and the K1 parameter sub-groups are respectively used for the K1 sub-functions.

As an embodiment, one of the K1 sub-functions includes a preprocessing layer.

As a sub-embodiment of the above embodiment, sub-function #0 in fig. 7 includes a preprocessing layer.

As a sub-embodiment of the above embodiment, the pre-treatment layer is a fully-bonded layer.

As a sub-embodiment of the above embodiment, the pre-processing layer expands the size of the input of the first function.

As an embodiment, one of the K1 subfunctions includes a pooling layer.

As an embodiment, one of the K1 sub-functions includes at least one convolutional layer.

As an embodiment, one of the K1 sub-functions includes at least one decoding layer.

As an embodiment, two subfunctions of the K1 subfunctions respectively include a full connection layer and at least one decoding layer.

As an embodiment, P1 subfunctions are a subset of the K1 subfunctions, P1 is a positive integer smaller than K1 and larger than 1; any sub-function of the P1 sub-functions comprises at least one decoding layer.

As a sub-embodiment of the foregoing embodiment, the features of any two sub-functions in the P1 sub-functions are the same; the characteristics include the number of decoding layers, the size of input parameters and the size of output parameters of each decoding layer, and the like.

As an embodiment, the one decoding layer comprises at least one convolutional layer.

As an embodiment, the one decoding layer comprises at least one convolutional layer and one pooling layer.

As an embodiment, the first parameter set includes at least one of a convolution kernel included in any decoding layer of the P1 sub-functions or a weight between different decoding layers of the P1 sub-functions.

For one embodiment, the phrase determining the meaning of the first function includes: values of parameters in the first set of parameters are determined.

For one embodiment, the phrase determining the meaning of the first function includes: determining all or part of the characteristics of the first function.

As an embodiment, the second node indicates at least part of the characteristics of the first function to the first node.

As one embodiment, the characteristic of the first function includes: one or more of convolution kernel size, number of convolution layers, convolution step size, pooling kernel step size, pooling function, activation function, or number of feature maps.

As one embodiment, the characteristic of the first function includes a relationship between the value of K1 and the K1 sub-functions.

As a sub-embodiment of the foregoing 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 precedence relationship between the K1 sub-functions.

As one embodiment, the characteristic of the first function includes: the value of P1 and the characteristics of any one of the P1 sub-functions.

As an embodiment, the sixth information block indicates the at least partial feature of the first function.

As one embodiment, the second information block indicates the at least partial feature of the first function.

As an embodiment, the first node determines the first function according to the receiving behavior in the first reference signal resource sub-pool, if the at least part of the characteristics of the first function is specified.

For one embodiment, the phrase determining the meaning of the first function includes: determining other characteristics of the first function than the characteristics specified by the first node.

As an embodiment, the first information block indicates at least one of the other characteristics of the first function and the first parameter set.

As an embodiment, two of the K1 sub-functions are cascaded, i.e. the input of one of the two sub-functions is the output of the other of the two sub-functions.

As a sub-embodiment of the above embodiment, the sub-function #0 and the sub-function #1 in fig. 7 (a) and 7 (c) are cascaded.

As an embodiment, two of the K1 sub-functions are in parallel; that is, the outputs of the two sub-functions are used together as the input of the other sub-function in the K1 sub-functions, or the output of the other sub-function in the K1 sub-functions is used as the input of the two sub-functions at the same time.

As a sub-embodiment of the above embodiment, the sub-function #1 and the sub-function #2 in fig. 7 (b) are connected in parallel.

As a sub-embodiment of the above embodiment, the subfunction # (K1-3) and the subfunction # (K1-2) in fig. 7 (b) are connected in parallel.

Example 8

Embodiment 8 illustrates a schematic diagram of a second function according to an embodiment of the present application; as shown in fig. 8. In embodiment 8, the second function includes K2 sub-functions, and K2 is a positive integer greater than 1. In fig. 8, the K2 subfunctions are represented by subfunctions # 0., subfunctions # (K2-1), respectively.

As an embodiment, the second function is used by the first node to generate the first compressed CSI.

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

As an embodiment, the input of the second function comprises the result of a channel measurement.

As an embodiment, the output of the second function comprises compressed CSI.

As an embodiment, the number of elements included in any one-time input of the second function is greater than the number of elements included in an output of the second function corresponding to the any one-time input.

As an embodiment, a load of any primary input of the second function is greater than a load of an output of the second function corresponding to the any primary input.

As one embodiment, the second function includes a neural network.

As one embodiment, the second function includes a neural network for CSI compression.

As one embodiment, the second function includes an encoder of a neural network for CSI compression.

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

As an embodiment, the second function comprises a second set of parameters, the second set of parameters comprising at least one parameter.

As an embodiment, the second set of parameters comprises 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 a weight between feature maps.

As an embodiment, the second parameter set comprises K2 parameter subsets, the K2 parameter subsets being used for the K2 sub-functions, respectively.

As an embodiment, one of the K2 subfunctions includes a full link layer.

As a sub-embodiment of the above embodiment, the subfunction # (K2-1) in FIG. 8 includes a fully connected layer.

As an embodiment, one of the K2 sub-functions includes a pooling layer.

As an embodiment, one of the K2 sub-functions includes at least one convolutional layer.

As an embodiment, one of the K2 sub-functions includes at least one convolution layer and one pooling layer.

As an embodiment, one of the K2 subfunctions includes at least one coding layer.

As an embodiment, two of the K2 subfunctions respectively include a full link layer and at least one coding layer.

As an embodiment, an encoding layer includes at least one convolutional layer and one pooling layer.

As an example, at the convolutional layer, at least one convolution kernel is used to convolve the input of the second function to generate the corresponding feature map, and at least one feature map output by the convolutional layer is reformed (reshape) into a vector input to the full-link layer; the full-link layer converts the one vector into an output of the second function.

As an embodiment, the second parameter set includes at least one of a number of sub-functions including convolutional layers in the K2 sub-functions, convolutional kernels of any convolutional layer in the K2 sub-functions, or weights between different convolutional layers in the K2 sub-functions.

For one embodiment, the phrase determining the meaning of the second function includes: determining values of parameters in the second set of parameters.

As an embodiment, two of the K2 sub-functions are cascaded, i.e. the input of one of the two sub-functions is the output of the other of the two sub-functions.

As a sub-embodiment of the above embodiment, the sub-function #0 and the sub-function #1 in fig. 8 (a) and 8 (b) are cascaded.

As an embodiment, two of the K2 sub-functions are in parallel; that is, the outputs of the two sub-functions are commonly used as the input of the other sub-function in the K2 sub-functions, or the output of the other sub-function in the K2 sub-functions is simultaneously used as the input of the two sub-functions.

As a sub-embodiment of the above embodiment, the sub-function #1 and the sub-function #2 in fig. 8 (b) are connected in parallel.

As a sub-embodiment of the above embodiment, the subfunction # (K2-3) and the subfunction # (K2-2) in fig. 8 (b) are connected in parallel.

As an embodiment, the second node indicates at least part of the characteristics of the second function to the first node.

As one embodiment, the characteristic of the second function includes: one or more of convolution kernel size, number of convolution layers, convolution step size, pooling kernel step size, pooling function, activation function, or number of feature maps.

As one embodiment, the characteristic of the second function includes: the value of K2, the K2 sub-functions including at least one of a number of sub-functions of a convolutional layer, a size of an input parameter and a size of an output parameter of each convolutional layer, and a relationship between the K2 sub-functions.

As a sub-embodiment of the foregoing embodiment, the relationship between the K2 sub-functions includes at least one of which sub-functions are cascaded, which sub-functions are parallel, or a precedence relationship between the K2 sub-functions.

As an embodiment, the sixth information block indicates the at least partial feature of the second function.

Example 9

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

For one embodiment, the first CSI comprises an estimated value of the first pre-compression CSI.

As one embodiment, the first compressed CSI is an output when the input to the second function is the first pre-compressed CSI.

As an embodiment, the first compressed CSI is carried by the third information block, which is transmitted by the first node and received by the second node over an air interface.

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

As one embodiment, the first node obtains channel measurements for generating the first pre-compression CSI based on reference signals received in a first reference signal resource.

In one embodiment, the first reference signal resource comprises a CSI-RS resource or an SS/PBCH block resource.

As one embodiment, the first reference signal resource includes a DMRS port.

As an embodiment, the second information block indicates that the target reference signal resource is associated to the first function, the first reference signal resource being the target reference signal resource.

As an example of the way in which the device may be used, the first reference signal resource and the target reference signal resource correspond to different reference signal resource identifications.

For one embodiment, the first reference signal resource belongs to the first reference signal resource sub-pool.

As one embodiment, the first reference signal resource does not belong to the first reference signal resource sub-pool.

As an embodiment, the first node obtains a first channel matrix based on the reference signals received in the first reference signal resource, any element in the first channel matrix representing a channel experienced by a wireless signal transmitted on one RS port of the first reference signal resource on one frequency unit; the first channel matrix is used to generate the first pre-compression CSI.

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

As a sub-embodiment of the above embodiment, the first CSI comprises an estimated value of the first channel matrix.

As a sub-implementation of the above-described embodiment, the CSI before the first compression comprises amplitude and phase information of elements in the first channel matrix.

As a sub-embodiment of the above embodiment, the first pre-compression CSI comprises the first channel matrix.

As a sub-embodiment of the foregoing embodiment, the CSI before the first compression is obtained by mathematically transforming the first channel matrix.

As an embodiment, the frequency unit is one subcarrier.

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

As an embodiment, the frequency unit consists of a plurality of consecutive subcarriers.

As an embodiment, the frequency unit is composed of a plurality of consecutive PRBs.

As an embodiment, the mathematical transformation comprises DFT (Discrete Fourier Transform).

As an embodiment, the mathematical transform comprises one or more of quantization, a spatial to angular domain transform, a frequency to time domain transform, or truncation.

As one embodiment, the first node determining the optimization objective for the first function includes: optimizing an error between the first CSI and the first pre-compression CSI.

As one embodiment, the optimizing includes: and (4) minimizing.

As an embodiment, the optimizing comprises: not greater than a given threshold.

As an embodiment, the Error comprises at least one of MSE (Mean Square Error), LMMSE (Linear Minimum MSE) or NMSE (Normalized MSE).

As one embodiment, the first function is an inverse function of the second function.

As an embodiment, the second function is established at the first node, and the first function is established at both the first node and the second node.

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

As a sub-example of the above-described embodiment, for a detailed description of CsiNet, refer to Chao-Kai Wen, deep Learning for Massive CSI Feedback,2018IEEE Wireless Communications letters, vol.7No.5, oct.2018, and the like.

As a sub-embodiment of the above-mentioned embodiments, for detailed description of CRNet, refer to the Zhilin Lu, multi-resolution CSI Feedback with Deep Learning in Massive MIMO System,2020IEEE International Conference on Communications (ICC), and the like.

As an embodiment, the first node jointly determines the first function and the second function according to the reception behavior in the first sub-pool of reference signal resources.

As an embodiment, the phrase that the target reference signal resource is associated to the meaning of the first function comprises: measurements for reference signals received in the target reference signal resource are used as input to the second function.

As an embodiment, the phrase that the meaning of the target reference signal resource being associated to the first function comprises: measurements for reference signals received in the target reference signal resource are used to generate inputs to the second function.

As an embodiment, the phrase that the meaning of the target reference signal resource being associated to the first function comprises: the first node is to obtain channel measurements for calculating the input of the second function based on reference signals received in the target reference signal resource.

As an embodiment, the phrase that the meaning of the target reference signal resource being associated to the first function comprises: the second function is used to compress CSI obtained based on channel measurements for reference signals received in the target reference signal resource.

Example 10

Embodiment 10 illustrates a schematic diagram of a first enhancement function according to an embodiment of the present application; as shown in fig. 10. In embodiment 10, the first function and the third function are used to generate the first enhancement function.

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

As an embodiment, the input of the first enhancement function comprises compressed CSI and the output of the first enhancement function comprises recovered pre-compressed CSI.

As an embodiment, a load of any primary input of the first enhancement function is smaller than a load of an output of the first enhancement function corresponding to the any primary input.

As an embodiment, the number of elements included in any one-time input of the first enhancement function is smaller than the number of elements included in an output of the first enhancement function corresponding to the any one-time input.

As one embodiment, the first enhancement function includes a Neural Network (Neural Network).

As an embodiment, the first enhancement function comprises a neural network for CSI compression.

As an embodiment, the first enhancement function comprises a decoder of a neural network for CSI compression.

As one embodiment, the first enhancement function includes the first function.

As an embodiment, the first enhancement function comprises K3 sub-functions, K3 being 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. In fig. 10, the K3 subfunctions are denoted as subfunctions # 0.., subfunctions # (K3-1), respectively.

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

As an embodiment, the K1 subfunctions are a subset of the K3 subfunctions.

As an embodiment, at least one of the K3 sub-functions comprises at least one convolutional layer.

As an embodiment, the first enhancement function comprises a greater number of convolution layers than the first function.

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

As an embodiment, the third function comprises one or more of a convolution, pooling, cascading or activating function.

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

As an example, 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 increasing function, as shown in fig. 10 (c).

As an embodiment, the first function and the third function generate the first enhancement function in parallel.

As an example, the first function and the third function share the same input, as shown in fig. 10 (b).

As an embodiment, one of the K1 sub-functions and the third function share the same input; for example, the sub-function #1 in the first function and the third function in fig. 10 (a) share the same input.

As an embodiment, the output of one of the K1 sub-functions is the input of the third function; for example, the output of sub-function #0 in the first function in fig. 10 (a) is the input of the third function.

As an embodiment, an output of one of the K1 sub-functions and an output of the third function are used together as an input of another one of the K1 sub-functions; for example, the output of the sub-function # (K3-3) in the first function and the output of the third function in fig. 10 (b) are used together as the input of the sub-function # (K3-1) in the first function.

As an embodiment, the output of the first function is the output of the first enhancement function; for example, as shown in FIG. 10 (b).

As an embodiment, the output of the first function and the output of the third function are used together as an input to a fourth function, the output of the fourth function being the output of the first enhancement function; for example, as shown in fig. 10 (a), the fourth function includes the subfunction # (K3-1) in fig. 10 (a).

As an embodiment, the first node determines the first boost function from the reception behavior in the first sub-pool of reference signal resources.

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

As an embodiment said phrase determining a meaning of said first enhancement function based on said reception behavior in said first sub-pool of reference signal resources is similar to said phrase determining a meaning of a first function based on said reception behavior in said first sub-pool of reference signal resources, except that said first function is replaced by said first enhancement function.

As an embodiment, the first node determines the first boost function from the reception behavior in all reference signal resources in the first sub-pool of reference signal resources.

As an embodiment, the first node determines the first boost function from the reception behavior in only part of the reference signal resources in the first sub-pool of reference signal resources.

As an embodiment, the first node determines the first enhancement function based on the reception behavior in a part of the reference signal resources in the first sub-pool of reference signal resources, and the first node determines the first enhancement function based on the reception behavior in another part of the reference signal resources in the first sub-pool of reference signal resources.

As a sub-embodiment of the above-mentioned embodiments, the part of the reference signal resources and the another part of the reference signal resources do not include common reference signal resources.

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

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

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

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

As an embodiment, the target reference signal resource is associated to the first function if the target reference signal resource is associated to the first enhancement function.

As one embodiment, measurements for the target reference signal resource are used to generate a target compressed CSI; the target compressed CSI is used as an input to the first enhancement function to generate target CSI if the target reference signal resource is associated to both the first function and the first enhancement function; the target compressed CSI is used as an input to the first function to generate target CSI if the target reference signal resource is not associated to the first enhancement function but is associated to the first function.

Example 11

Embodiment 11 illustrates a schematic diagram of a second enhancement function according to an embodiment of the present application; as shown in fig. 11. In embodiment 11, the second and fifth functions are used to generate a second enhancement function, the output of which comprises the second compressed CSI.

As one embodiment, the second enhancement function is used by the first node to generate the second compressed CSI.

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

As an embodiment, the input of the second enhancement function comprises the result of a channel measurement.

As an embodiment, the input of the second enhancement function comprises a channel matrix.

As an embodiment, the output of the second enhancement function comprises compressed CSI.

As an embodiment, a load of any primary input of the second enhancement function is greater than a load of an output of the second enhancement function corresponding to the any primary input.

As an embodiment, the number of elements included in any one-time input of the second enhancement function is greater than the number of elements included in an output of the second enhancement function corresponding to the any one-time input.

As an embodiment, the second enhancement function comprises a neural network.

As an embodiment, the second enhancement function comprises a neural network for CSI compression.

As an embodiment, the second enhancement function comprises an encoder of a neural network for CSI compression.

As an embodiment, the second enhancement function comprises the second function.

As an embodiment, the second enhancement function comprises K4 sub-functions, K4 being a positive integer greater than 1; the K4 sub-functions include one or more of a convolution function, a pooling function, a cascading function, or an activation function. In fig. 11, the K4 subfunctions are denoted as subfunctions # 0.., subfunctions # (K4-1), respectively.

As an embodiment, the second function and the fifth function are respectively composed of partial sub-functions of the K4 sub-functions.

As an embodiment, the K2 sub-functions are a subset of the K4 sub-functions.

As an embodiment, at least one of the K4 sub-functions comprises at least one convolutional layer.

As an embodiment, the second enhancement function comprises a greater number of convolution layers than the second function comprises.

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

As an embodiment, the fifth function comprises one or more of a convolution, pooling, cascading or activation function.

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

As an embodiment, the output of the second function is the input of the fifth function, the output of the fifth function is the output of the second increasing function; for example, as shown in FIG. 11 (c).

As an embodiment, the second function and the fifth function generate the second enhancement function in parallel.

As an embodiment, the second function and the fifth function share the same input; for example, as shown in FIG. 11 (b).

As an embodiment, one of the K2 sub-functions and the fifth function share the same input; for example, the sub-function #1 in the second function and the fifth function in fig. 11 (a) share the same input.

As an embodiment, the output of one of the K2 sub-functions is the input of the fifth function; for example, the output of sub-function #0 in the second function in fig. 11 (a) is the input of the fifth function.

As an embodiment, an output of one of the K2 sub-functions and an output of the fifth function are used together as an input of another one of the K2 sub-functions; for example, the output of the sub-function # (K4-3) in the second function and the output of the fifth function in fig. 11 (b) are used together as the input of the sub-function # (K4-1) in the second function.

As an embodiment, the output of the second function is the output of the second enhancement function.

As an embodiment, the output of the second function and the output of the fifth function are used together as an input to a sixth function, the output of the sixth function being the output of the second enhancement function; for example, as shown in fig. 11 (a), the sixth function includes the subfunction # (K4-1) in fig. 11 (a).

As an embodiment, the phrase that said target reference signal resource is associated to said first enhancement function has a similar meaning as said phrase that said target reference signal resource is associated to said first function, except that said first function is replaced by said first enhancement function and said second function is replaced by said second enhancement function.

As an embodiment, the first node determines the second boost function according to the reception behavior in the first sub-pool of reference signal resources.

As an embodiment, the first node determines the second enhancement function based on the reception behavior in a part of the reference signal resources in the first sub-pool of reference signal resources, and the first node determines the second enhancement function based on the reception behavior in another part of the reference signal resources in the first sub-pool of reference signal resources.

As a sub-embodiment of the above embodiment, the part of the reference signal resources and the another part of the reference signal resources do not include common reference signal resources.

Example 12

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

For one embodiment, the second CSI comprises an estimated value of the second pre-compression CSI.

As an embodiment, the second compressed CSI is carried by the fourth information block, which is transmitted by the first node and received by the second node over an air interface.

As an embodiment, the first node obtains channel measurements for generating the second compressed CSI based on reference signals received in the first sub-pool of reference signal resources.

As one embodiment, the second compressed CSI is independent of measurements for reference signals received in the first sub-pool of reference signal resources.

As an embodiment, the second information block indicates that the target reference signal resource is associated to the first enhancement function, the first node obtaining channel measurements for generating the second compressed CSI based on reference signals received in the target reference signal resource.

As one embodiment, the second compressed CSI is independent of measurements for reference signals received in the target reference signal resource.

As an embodiment, the second information block indicates that the target reference signal resource is not associated to the first enhancement function, the second compressed CSI being independent of measurements for reference signals received in the target reference signal resource.

In one embodiment, the second CSI includes a PMI.

As an embodiment, the second CSI comprises one or more of CQI, CRI or RI.

For one embodiment, the second CSI includes a channel matrix.

As an embodiment, the second CSI comprises amplitude and phase information of elements in a channel matrix.

As one embodiment, the second compressed CSI includes a PMI.

As an embodiment, the second compressed CSI comprises one or more of CQI, CRI or RI.

As an embodiment, the second compressed CSI comprises amplitude and phase information of elements in a channel matrix.

As an embodiment, the second compressed CSI comprises a matrix.

For one embodiment, the second compressed CSI comprises a vector.

As one embodiment, the second CSI includes a third matrix, and the second compressed CSI includes a fourth matrix, a number of elements in the fourth matrix being less than a number of elements in the third matrix.

As a sub-embodiment of the above embodiment, the fourth matrix is a vector.

As a sub-embodiment of the above embodiment, a product of the number of rows and the number of columns of the fourth matrix is smaller than a product of the number of rows and the number of columns of the third matrix.

As an embodiment, the second CSI consists of Q3 bits, the second compressed CSI consists of Q4 bits, Q3 and Q4 are positive integers greater than 1, respectively, and Q3 is greater than Q4.

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

As one embodiment, the first node obtains channel measurements for computing the second pre-compression CSI based on reference signals received in a second reference signal resource.

For one embodiment, the second reference signal resource includes a CSI-RS resource or an SS/PBCH block resource.

As an embodiment, the second reference signal resource comprises a DMRS port.

As an embodiment, the second information block indicates that the target reference signal resource is associated to the first enhancement function, the second reference signal resource being the target reference signal resource.

As an embodiment, the second reference signal resource and the target reference signal resource correspond to different reference signal resource identifications.

For one embodiment, the second reference signal resource belongs to the first reference signal resource sub-pool.

As an embodiment, the second reference signal resource does not belong to the first reference signal resource sub-pool.

As an embodiment, the second reference signal resource and the first reference signal resource correspond to different reference signal resource identifications.

As an embodiment, the first node obtains a second channel matrix based on channel measurements for reference signals received in the second reference signal resource, any element in the second channel matrix representing a channel experienced on one frequency unit by a wireless signal transmitted on one RS port of the second reference signal resource; the second channel matrix is used to generate the second pre-compression CSI.

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

As a sub-embodiment of the above embodiment, the second CSI comprises an estimated value of the second channel matrix.

As a sub-embodiment of the above embodiment, the second pre-compression CSI comprises the second channel matrix.

As a sub-implementation of the above embodiment, the CSI before the second compression comprises amplitude and phase information of elements in the second channel matrix.

As a sub-embodiment of the foregoing embodiment, the CSI before the second compression is obtained by mathematically transforming the second channel matrix.

Example 13

Embodiment 13 illustrates a schematic diagram in which a second information block indicates at least part of a characteristic of a first function according to an embodiment of the present application; as shown in fig. 13.

As an embodiment, the second information block comprises a second bit field, values of the second bit field indicating the at least partial characteristic of the first function.

As one embodiment, the second information block indicates the at least partial feature of the second function.

Example 14

Embodiment 14 illustrates a schematic diagram where the second information block indicates at least part of the characteristics of the first enhancement function according to an embodiment of the application; as shown in fig. 14.

As an embodiment, the second information block comprises a third bit field, the value of the third bit field indicating at least part of the characteristics of the first enhancement function.

As one embodiment, the characteristic of the first enhancement function includes: one or more of a relationship between the first function and the third function, the characteristic of the first function, or a characteristic of the third function.

As a sub-embodiment of the above-mentioned embodiment, said characteristic of said third function comprises: one or more of convolution kernel size, number of convolution layers, convolution step size, pooling kernel step size, pooling function, activation function, or number of feature maps.

As a sub-embodiment of the above embodiment, the characteristic of the third function comprises: the value of K3, which sub-functions of the K3 sub-functions are cascaded, which sub-functions of the K3 sub-functions are parallel, or at least one of precedence relationships between the K3 sub-functions.

As an embodiment, the second information block indicates at least part of a characteristic of the second enhancement function.

As one embodiment, the characteristic of the second enhancement function includes: a relationship between the second function and the fifth function, one or more of the characteristics of the second function or the characteristics of the fifth function.

As a sub-embodiment of the above embodiment, the characteristic of the fifth function comprises: one or more of convolution kernel size, number of convolution layers, convolution step size, pooling kernel step size, pooling function, activation function, or feature map number.

As a sub-embodiment of the above embodiment, the characteristics of the fifth function include: the value of K4, which sub-functions of the K4 sub-functions are cascaded, which sub-functions of the K4 sub-functions are parallel, or at least one of precedence relationships between the K4 sub-functions.

Example 15

Embodiment 15 illustrates a schematic diagram implicitly indicating whether a target reference signal resource is associated to a first function according to a first transmission configuration state of an embodiment of the present application; as shown in fig. 15.

As one embodiment, the second information block indicates the first transmission configuration status.

As an embodiment, the first Transmission Configuration status includes a TCI (Transmission Configuration Indicator) status.

For one embodiment, the first transmission configuration state is a TCI state.

For one embodiment, the first transmission configuration status indicates a QCL relationship.

As one 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.

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

As one embodiment, the first transmission configuration state is a TCI state of the target reference signal.

As one embodiment, the second information block indicates that the TCI status of the target reference signal resource is the first transmission configuration status.

As one embodiment, the first transmission configuration state is used to determine a QCL relationship for the target reference signal resource.

As one embodiment, the first transmission configuration state is used to determine a Spatial Rx parameter (Spatial Rx parameter) of the target reference signal resource.

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

As an embodiment, the large-scale characteristics (large-scale properties) include one or more of delay spread (delay spread), doppler spread (Doppler spread), doppler shift (Doppler shift), average delay (average delay), or Spatial Rx parameter.

As one embodiment, the first transmission configuration status indicates a third reference signal resource.

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

As a sub-embodiment of the above embodiment, the RS port of the target reference signal resource and the RS port of the third reference signal resource QCL.

As a sub-embodiment of the foregoing embodiment, the first transmission configuration status indicates that the QCL type corresponding to the third reference signal resource is QCL-type, and the RS port of the target reference signal resource and the RS port of the third reference signal resource are QCL and correspond to QCL-type.

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

As a sub-implementation of the foregoing 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.

As an embodiment, the target reference signal resource is associated to the first function if the first transmission configuration state belongs to a first set of transmission configuration states; the target reference signal resource is not associated to the first function if the first transmission configuration state does not belong to the first set of transmission configuration states; the first set of transmission configuration states comprises at least one transmission configuration state.

As a sub-embodiment of the above embodiment, the first set of transmission configuration states is configured by RRC signaling.

As one embodiment, the first transmission configuration status indicates the third reference signal resource; the target reference signal resource is associated to the first function if the third reference signal resource belongs to a first set of reference signal resources; the target reference signal resource is not associated to the first function if the third reference signal resource does not belong to the first set of reference signal resources; the first set of reference signal resources comprises at least one reference signal resource.

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

Example 16

Embodiment 16 illustrates a schematic diagram of a fifth information block indicating whether a target reference signal resource is suitable to be associated to a first function according to an embodiment of the present application; as shown in fig. 16.

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

As an embodiment, the fifth information block is carried by a MAC CE.

As an embodiment, the fifth information block is carried by a physical layer.

As an embodiment, the fifth information block includes a CRI.

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

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 to the first function.

As an embodiment, the fifth information block indicates at least one reference signal resource adapted to be associated to the first function.

As an embodiment, the fifth information block indicates at least one reference signal resource not suitable to be associated to the first function.

As an embodiment, the fifth information block indicates at least one reference signal resource suitable for being generated with compressed CSI.

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

As an embodiment, the fifth information block indicates which reference signal resources of the first sub-pool of reference signal resources are suitable to be associated to the first function.

As an embodiment, the fifth information block indicates which reference signal resources of the first pool of reference signal resources are suitable to be associated to the first function.

As one embodiment, measurements for reference signals received in the target reference signal resources are used to generate target pre-compression CSI, which is used as an input to the second function to generate target compressed CSI, which is used as an input to the first function to generate target CSI; the fifth information block indicates an error between the target CSI and the target pre-compression CSI.

As a sub-implementation of the above embodiment, the fifth information block implicitly indicates with the error whether the target reference signal resource is suitable to be associated to the first function.

As a sub-embodiment of the above embodiment, said target reference signal resource is adapted to be associated to said first function if said error is smaller than a first threshold; the target reference signal resource is not suitable to be associated to the first function if the error is larger than the first threshold.

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

As an embodiment, the fifth information block indicates whether the target reference signal resource is suitable to be associated to the first enhancement function.

As an embodiment, the fifth information block indicates which reference signal resources of the first sub-pool of reference signal resources are suitable to be associated to the first enhancement function.

As an embodiment, the fifth information block indicates which reference signal resources of the first pool of reference signal resources are suitable to be associated to the first enhancement function.

Example 17

Embodiment 17 illustrates a block diagram of a processing apparatus used in a first node device according to an embodiment of the present application; as shown in fig. 17. In fig. 17, a processing apparatus 1700 in a first node device includes a first processor 1701 and a first transmitter 1702.

In embodiment 17, the first processor 1701 receives reference signals in a first sub-pool of reference signal resources, determines a first function according to the receiving behavior in the first sub-pool of reference signal resources, and receives a second information block; the first transmitter 1702 transmits the first information block and the third information block.

In embodiment 17, the first sub-pool of reference signal resources comprises at least one reference signal resource, the first information block being used to determine the first function; the second information block is used to determine whether a target reference signal resource is associated to the first function; the third information block indicates first compressed CSI, which is used as an input to the first function to generate first CSI.

As an embodiment, the first node is a user equipment; the first information block indicates the first function; the second information block indicates whether the target reference signal resource is associated to the first function; the first CSI comprises a first matrix, the first compressed CSI comprises a second matrix, and the number of elements in the second matrix is smaller than the number of elements in the first matrix; a sixth information block indicates a first reference signal resource pool, any reference signal resource in the first reference signal resource sub-pool belongs to the first reference signal resource pool, and the first reference signal resource pool comprises at least one reference signal resource; the first node determining the first function from reference signals received in reference signal resources in the first pool of reference signal resources; the sixth information block indicates at least a partial feature of the first function.

As one embodiment, the first processor 1701 determines a second function from the reception behavior in the first sub-pool of reference signal resources; wherein an output of the second function comprises the first compressed CSI.

As an example, the first transmitter 1702 transmits a fourth information block indicating the second compressed CSI that is used as an input to the first enhancement function to generate the second CSI; wherein the first function is used to generate the first enhancement function; the second information block is used to determine whether the target reference signal resource is associated to the first enhancement function.

As an embodiment, the second information block indicates at least part of a characteristic of the first function.

As an embodiment, the second information block indicates at least part of a characteristic of the first enhancement function.

As an embodiment, the second information block comprises a first transmission configuration state implicitly indicating whether the target reference signal resource is associated to the first function.

As an embodiment, the first transmitter 1702 transmits a fifth information block indicating whether the target reference signal resource is suitable to be associated to the first function.

For one embodiment, the first processor 1701 receives reference signals in the target reference signal resources.

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

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

For one embodiment, the first processor 1701 includes at least one of the { antenna 452, receiver 454, receive processor 456, multi-antenna receive processor 458, controller/processor 459, memory 460, data source 467} of embodiment 4.

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

Example 18

Embodiment 18 is a block diagram illustrating a configuration of a processing apparatus used in a second node device according to an embodiment of the present application; as shown in fig. 18. In fig. 18, the processing means 1800 in the second node device comprises a second transmitter 1801 and a first receiver 1802.

In embodiment 18, the second transmitter 1801 transmits the reference signal in the first reference signal resource sub-pool and transmits the second information block; the first receiver 1802 receives the first information block and the third information block.

In embodiment 18, the first sub-pool of reference signal resources comprises at least one reference signal resource, the target recipient of the first sub-pool of reference signal resources determines a first function according to the reception behavior in the first sub-pool of reference signal resources; the first information block is used to determine the first function; the second information block is used to determine whether a target reference signal resource is associated to the first function; the third information block indicates first compressed CSI, which is used as an input to the first function to generate first CSI.

As an embodiment, the second node is a base station; the first information block indicates the first function; the second information block indicates whether the target reference signal resource is associated to the first function; the first CSI comprises a first matrix, the first compressed CSI comprises a second matrix, and the number of elements in the second matrix is smaller than the number of elements in the first matrix; the sixth information block indicates a first reference signal resource pool, any reference signal resource in the first reference signal resource sub-pool belongs to the first reference signal resource pool, and the first reference signal resource pool comprises at least one reference signal resource; the target recipient of the first sub-pool of reference signal resources determines the first function from reference signals received in reference signal resources in the first sub-pool of reference signal resources; the sixth information block indicates at least a partial feature of the first function.

As an embodiment, the target recipient of the first sub-pool of reference signal resources determines a second function according to the reception behavior in the first sub-pool of reference signal resources; wherein an output of the second function comprises the first compressed CSI.

As an embodiment, the first receiver 1802 receives a fourth information block, the fourth information block indicating second compressed CSI that is used as input to a first enhancement function to generate second CSI; wherein the first function is used to generate the first enhancement function; the second information block is used to determine whether the target reference signal resource is associated to the first enhancement function.

As an embodiment, the first receiver 1802 receives a fifth information block indicating whether the target reference signal resource is suitable to be associated to the first function.

As an embodiment, the second transmitter 1801 transmits a reference signal in the target reference signal resource.

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

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

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

For one embodiment, the second transmitter 1801 includes at least one of { antenna 420, transmitter 418, transmission processor 416, multi-antenna transmission processor 471, controller/processor 475, memory 476} in embodiment 4.

For one embodiment, the first receiver 1802 includes at least one of { antenna 420, receiver 418, receive processor 470, multi-antenna receive processor 472, controller/processor 475, memory 476} of embodiment 4.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The user equipment, the terminal and the UE in the present application include, but are not limited to, an unmanned aerial vehicle, a Communication module on the unmanned aerial vehicle, a remote control plane, an aircraft, a small airplane, a mobile phone, a tablet computer, a notebook, an on-board Communication device, a vehicle, an RSU, a wireless sensor, an internet access card, an internet of things terminal, an RFID terminal, an NB-IOT terminal, an MTC (Machine Type Communication) terminal, an eMTC (enhanced MTC) terminal, a data card, an internet access card, an on-board Communication device, a low-cost mobile phone, a low-cost tablet computer and other wireless Communication devices. The base station or the system device in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a small cell base station, a home base station, a relay base station, an eNB, a gbb, a TRP (Transmitter Receiver Point), a GNSS, a relay satellite, a satellite base station, an air base station, an RSU (Road Side Unit), an unmanned aerial vehicle, a testing device, and a wireless communication device such as a transceiver device or a signaling tester simulating part of functions of a base station.

It will be appreciated by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The presently disclosed embodiments are therefore to be considered in all respects as illustrative and not restrictive. The scope of the invention is indicated by the appended claims rather than the foregoing description, and all changes that come within the meaning and range of equivalents thereof are intended to be embraced therein.

Claims

1. A first node device for wireless communication, comprising:

a first processor receiving reference signals in a first sub-pool of reference signal resources, the first sub-pool of reference signal resources comprising at least one reference signal resource, and determining a first function according to the receiving behavior in the first sub-pool of reference signal resources;

the first transmitter to transmit a third information block indicating first compressed CSI used as input to the first function to generate first CSI.

2. The first node device of claim 1, wherein the first processor determines a second function based on the reception behavior in the first sub-pool of reference signal resources; wherein an output of the second function comprises the first compressed CSI.

3. The first node device of claim 1 or 2, wherein the first transmitter transmits a fourth information block indicating second compressed CSI used as input to a first enhancement function to generate second CSI; wherein the first function is used to generate the first enhancement function; the second information block is used to determine whether the target reference signal resource is associated to the first enhancement function.

4. The first node apparatus of any of claims 1 to 3, wherein the second information block indicates at least part of a characteristic of the first function.

5. The first node apparatus of claim 3, wherein the second information block indicates at least a partial characteristic of the first enhancement function.

6. The first node device of any of claims 1 to 5, wherein the second information block comprises a first transmission configuration state implicitly indicating whether the target reference signal resource is associated to the first function.

7. The first node device of any of claims 1 to 6, wherein the first transmitter transmits a fifth information block indicating whether the target reference signal resource is suitable to be associated to the first function.

8. A second node device for wireless communication, comprising:

a first receiver to receive a first block of information, the first block of information being used to determine the first function;

the second transmitter to transmit a second block of information, the second block of information used to determine whether a target reference signal resource is associated to the first function;

9. A method in a first node used for wireless communication, comprising:

10. A method in a second node used for wireless communication, comprising: