Channel state information (CSI) transmission method, terminal and network side equipment

Abstract

The invention discloses a channel state information (CSI) transmission method, a terminal and network side equipment, and belongs to the technical field of communication, and the method comprises the steps that the terminal jointly maps all CSI in a first CSI group into target CSI based on a preset mapping relation; the terminal sends a CSI report to network side equipment, wherein the CSI report comprises the target CSI; wherein the first CSI group comprises at least two pieces of repeated or same CSI, and the number of the CSI in the first CSI group is the same as the number of the CSI which can be jointly mapped by the predetermined mapping relationship.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a method, terminal, and network-side device for transmitting Channel State Information (CSI). Background Technology

[0002] In related technologies, the resource overhead of CSI reporting can be reduced by performing joint mapping (such as encoding, compression, etc.) on multiple CSIs to be reported.

[0003] However, the joint mapping method used in related technologies usually has a fixed number of CSIs that can be jointly mapped. In this case, if the number of CSIs to be fed back is less than the number of CSIs that the joint mapping method can jointly map, the CSI joint mapping process will fail and affect the CSI transmission performance. Summary of the Invention

[0004] This application provides a CSI transmission method, terminal, and network-side device, which can solve the problem that the CSI joint mapping process cannot be implemented when the number of CSIs to be fed back is less than the number of CSIs that can be jointly mapped by the joint mapping method, thus ensuring CSI transmission performance.

[0005] In a first aspect, a method for transmitting CSI is provided, comprising: a terminal jointly mapping each CSI in a first CSI group to a target CSI based on a predetermined mapping relationship; the terminal sending a CSI report to a network-side device, the CSI report including the target CSI; wherein the first CSI group includes at least two duplicate or identical CSIs, and the number of CSIs in the first CSI group is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship.

[0006] Secondly, a method for transmitting CSI is provided, comprising: a network-side device receiving a CSI report from a terminal, the CSI report including a target CSI; the network-side device demapping the target CSI into a first CSI group; wherein the first CSI group includes at least two duplicate or identical CSIs, and the number of CSIs in the first CSI group is the same as the number of CSIs that can be jointly mapped by a predetermined mapping relationship corresponding to the target CSI.

[0007] Thirdly, a CSI transmission device is provided, comprising: a processing module for jointly mapping each CSI in a first CSI group to a target CSI based on a predetermined mapping relationship; and a transmission module for sending a CSI report to a network-side device, the CSI report including the target CSI; wherein the first CSI group includes at least two duplicate or identical CSIs, and the number of CSIs in the first CSI group is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship.

[0008] Fourthly, a CSI transmission apparatus is provided, comprising: a transmission module for receiving a CSI report from a terminal, the CSI report including a target CSI; and a processing module for demapping the target CSI into a first CSI group; wherein the first CSI group includes at least two duplicate or identical CSIs, and the number of CSIs in the first CSI group is the same as the number of CSIs that can be jointly mapped by a predetermined mapping relationship corresponding to the target CSI.

[0009] Fifthly, a CSI transmission apparatus is provided, the apparatus being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0010] In a sixth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0011] In a seventh aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to jointly map each CSI in a first CSI group to a target CSI based on a predetermined mapping relationship; the communication interface is configured to send a CSI report to a network-side device, the CSI report including the target CSI; wherein the first CSI group includes at least two duplicate or identical CSIs, and the number of CSIs in the first CSI group is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship.

[0012] Eighthly, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect.

[0013] In a ninth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is configured to receive a CSI report from a terminal, the CSI report including a target CSI; the processor is configured to demap the target CSI into a first CSI group; wherein the first CSI group includes at least two duplicate or identical CSIs, and the number of CSIs in the first CSI group is the same as the number of CSIs that can be jointly mapped by a predetermined mapping relationship corresponding to the target CSI.

[0014] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.

[0015] Eleventhly, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method as described in the first aspect, and the network-side device can be used to perform the steps of the method as described in the second aspect.

[0016] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0017] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0018] In this embodiment of the application, by configuring duplicate or identical CSIs in the first CSI group, the number of CSIs to be reported is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship, so as to achieve the purpose of joint mapping of CSIs by applying the predetermined mapping relationship. This effectively solves the problem in the related technology that the joint mapping process cannot be implemented when the number of CSIs to be reported is less than the number of CSIs that can be jointly mapped by the joint mapping method, and ensures CSI transmission performance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a wireless communication system provided in an exemplary embodiment of this application.

[0020] Figure 2 This is one of the flowcharts illustrating a CSI transmission method provided in an exemplary embodiment of this application.

[0021] Figure 3This is a schematic diagram of the interaction flow of the CSI transmission method provided in an exemplary embodiment of this application.

[0022] Figure 4 This is a second schematic flowchart of a CSI transmission method provided in an exemplary embodiment of this application.

[0023] Figure 5 This is one of the structural schematic diagrams of a CSI device provided in an exemplary embodiment of this application.

[0024] Figure 6 This is a second schematic diagram of the structure of the CSI device provided in an exemplary embodiment of this application.

[0025] Figure 7 This is a schematic diagram of the structure of a communication device provided in an exemplary embodiment of this application.

[0026] Figure 8 This is a schematic diagram of the structure of a terminal provided in an exemplary embodiment of this application.

[0027] Figure 9 This is a schematic diagram of the structure of a network-side device provided in an exemplary embodiment of this application. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0029] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0030] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as one in which the sender explicitly informs the receiver of specific information, the operation to be performed, or the requested result, etc., in the instruction sent. An indirect instruction can be understood as one in which the receiver determines the corresponding information based on the instruction sent by the sender, or makes a judgment and determines the operation to be performed or the requested result, etc., based on the judgment result.

[0031] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0032] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home devices (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game consoles, personal computers (PCs), ATMs, or self-service machines, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (AS), or Wireless Fidelity (WiFi) nodes, etc.The term "base station" can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), or any other suitable term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to any specific technical terminology. It should be noted that this application embodiment only uses a base station in an NR system as an example for description and does not limit the specific type of base station.

[0033] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), and Binding Support Function. Support Functions (BSF), Application Functions (AF), Location Management Functions (LMF), Gateway Mobile Location Centres (GMLC), and Network Data Analytics Functions (NWDAF), etc. It should be noted that this application embodiment only uses core network equipment in the NR system as an example and does not limit the specific type of core network equipment. If the name of the core network equipment mentioned in this application embodiment changes in subsequent protocol versions (e.g., 6G), it will still be within the scope of protection of this application.

[0034] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0035] Furthermore, for ease of understanding, the relevant technical features involved in this application are described herein.

[0036] 1. CSI Compressed Feedback Technology

[0037] CSI compression works by having the CSI transmitter map a high-dimensional CSI to a low-dimensional binary sequence based on a predefined codebook. The CSI receiver can then reconstruct the CSI from this binary sequence. Currently, the supported codebook types for CSI compression include type I, type II, and enhanced (e) type II codebooks.

[0038] 1) Type I codebook

[0039] Type I codebooks, when it's impossible to report the complete channel or precoder, report the precoding matrix indicator (PMI) for the wideband or subband. This is a two-dimensional Discrete Fourier Transform (DFT) vector and its phase rotation over the wideband or subband. Type I primarily reports the index of the two-dimensional DFT vector and its phase rotation.

[0040] 2) Type 2 codebook

[0041] A type 2 codebook is a relatively simple two-dimensional DFT vector and its phase rotation. The PMI can be represented as a linear weighted sum of a set of basis vectors. Furthermore, the type 2 codebook needs to report the basis vector index and its projection onto the basis vectors (such as amplitude and phase).

[0042] 3) e type 2 codebook

[0043] Since the overhead of the type 2 codebook is as large as hundreds or even thousands of bits, the e type 2 codebook is a further compression of the type 2 codebook, that is, the vector composed of weighted coefficients on different subbands is further compressed into a vector composed of a set of frequency domain basis vectors.

[0044] (2) Artificial Intelligence (AI) Unit

[0045] The CSI compression use case based on AI units is a typical two-end model (such as a terminal-side model and a network-side model), meaning that the complete CSI compression model needs to be deployed on different network nodes. Currently, most considerations involve deploying the encoder on the UE side and the decoder on the network (NW) side. The (sub)models deployed on multiple nodes need to be paired with each other to function properly.

[0046] Considering the characteristics of the two-end models mentioned above, the following training collaboration types have been basically determined.

[0047] 1) Joint training at a single entity (or type 1)

[0048] Joint training on a single node refers to training a complete encoder and decoder model on a network node (UE, NW, or a third-party server node, etc.), and then deploying the corresponding model to the target node through methods such as model transfer, for example, transferring the encoder part to the UE and the decoder part to the NW.

[0049] 2) Joint training at multiple entities (or type 2)

[0050] Joint training on multiple nodes refers to the collaborative training process where multiple nodes jointly participate, with each node independently calculating the forward / backward propagation information required for its local model training and updating its own model parameters. Since the training process requires forward / backward propagation of the entire model (including the encoder and decoder), participating nodes need to exchange the corresponding forward / backward propagation information. After training is complete, no further model transfer is required between nodes.

[0051] 3) Separate training (or type 3) on multiple nodes

[0052] Multi-node separate training refers to first training a reference model on a certain node, then sending the relevant information of the reference model to the target node, and finally, the target node training the model required by this information, thereby ensuring that the node (sub)models can be paired and used together. For example, the NW side first trains a complete encoder-decoder model and determines that the obtained decoder is the decoder to be actually used in the future. Then, the relevant information of the encoder corresponding to the decoder (usually the encoder's input and output data) is sent to the UE side, and the UE side trains its own encoder based on this information.

[0053] This training framework can be further subdivided into two scenarios: UE-first training and NW-first training. UE-first training refers to training the complete model on the UE side first, and then sending the information needed for training the matching model on the NW side (generally the input and output data of the model to be trained on the NW side) to the NW side. Conversely, NW-first training refers to training the complete model on the NW side first, and then sending the information needed for training the matching model on the UE side (generally the input and output data of the model to be trained on the UE side) to the UE side.

[0054] It is worth noting that the AI ​​unit mentioned in this application context may also be referred to as an AI model, machine learning (ML) model, ML unit, AI structure, AI function, AI characteristic, machine learning model, neural network, neural network function, neural network functionality, etc. Alternatively, the AI ​​unit / AI model may refer to a processing unit capable of implementing specific algorithms, formulas, processing flows, capabilities, etc., related to AI. Or, the AI ​​unit / AI model may be a processing method, algorithm, function, module, or unit for a specific dataset. Alternatively, the AI ​​unit / AI model may be a processing method, algorithm, function, module, or unit running on AI / ML related hardware such as a Graphics Processing Unit (GPU), Neural Processing Unit (NPU), Tensor Processing Unit (TPU), or Application-Specific Integrated Circuit (ASIC), etc., without specific limitations here. Optionally, the specific dataset includes the input and / or output of the AI ​​unit or I model.

[0055] Optionally, the identifier of the AI ​​unit may be an AI model identifier, an AI structure identifier, an AI algorithm identifier, or an identifier of a specific dataset associated with the AI ​​unit or AI model, or an identifier of a specific scenario, environment, channel characteristics, or device related to the AI / ML, or an identifier of a function, feature, capability, or module related to the AI / ML. This application does not specifically limit this.

[0056] Based on this, the technical solutions provided by the embodiments of this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0057] like Figure 2 The diagram shown is a flowchart illustrating a CSI transmission method 200 provided in an exemplary embodiment of this application. This method 200 can be executed by, but is not limited to, a terminal, specifically by hardware and / or software installed in the terminal. In this embodiment, the method 200 may include at least the following steps.

[0058] S210, the terminal jointly maps each CSI in the first CSI group to the target CSI based on a predetermined mapping relationship.

[0059] The joint mapping can also be understood as joint encoding or joint compression. That is, in this embodiment, the predetermined mapping relationship can be used to jointly compress or encode each CSI in the first CSI group to obtain better CSI compression or encoding performance and reduce resource overhead during CSI transmission.

[0060] Correspondingly, the predetermined mapping relationship (also known as the joint mapping method, etc.) can be understood as a compressor capable of implementing CSI joint compression, or an encoder capable of implementing CSI joint encoding, etc.

[0061] Optionally, the CSI mentioned in the context of this application may include, but is not limited to, all or part of the following: CSI-RS Resource Indicator (CRI), PMI, Rank indicator (RI), Channel quality indicator (CQI), Layer indicator (LI), and Precoding Matrix.

[0062] S220, the terminal sends a CSI report to the network-side device, the CSI report including the target CSI.

[0063] The first CSI group includes at least two duplicate or identical CSIs, and the number of CSIs in the first CSI group is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship. In other words, in this embodiment, when the number of CSIs to be reported is less than the number of CSIs that can be jointly mapped by the predetermined mapping relationship, duplicate or identical CSIs can be configured in the first CSI group to ensure that the number of CSIs to be reported is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship. This achieves the purpose of jointly mapping CSIs using the predetermined mapping relationship, effectively solving the problem in related technologies where the CSI joint mapping process cannot be implemented when the number of CSIs to be reported is less than the number of CSIs that can be jointly mapped by the joint mapping method. This ensures CSI transmission performance and improves the flexibility of CSI joint mapping.

[0064] It is worth noting that since the CSIs are all obtained by measuring a measurement resource (such as CSI-RS), the repeated or identical CSIs included in the first CSI group correspond to the same measurement resource.

[0065] In one embodiment, there are multiple ways to implement the aforementioned "by configuring duplicate or identical CSIs in the first CSI group, the number of CSIs to be reported is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship". For example, assuming that the number of first specific CSIs included in the second CSI group to be reported is less than the number of CSIs that can be jointly mapped by the predetermined mapping relationship, wherein the first specific CSIs include CSIs that satisfy the CSI mapping requirements corresponding to the predetermined mapping relationship, then the terminal can determine the first CSI group based on the second CSI group to be reported, thereby making the number of CSIs to be reported the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship. This effectively solves the problem in related technologies where the CSI joint mapping process cannot be implemented when the number of CSIs to be reported is less than the number of CSIs that can be jointly mapped by the joint mapping method.

[0066] The aforementioned “CSI mapping requirements” may include, but are not limited to: requiring that the reference signal received power (RSRP) corresponding to the CSI that is jointly mapped using the predetermined mapping relationship be higher than a first threshold, and that the feature value corresponding to the CSI be higher than a second threshold, etc., wherein the first threshold and the second threshold may be configured by means of protocol agreement, etc.

[0067] The aforementioned "eigenvalue corresponding to CSI" is a quantity associated with the channel matrix. For example, in this application, when the CSI to be jointly mapped is a precoding matrix, the precoding matrix is ​​generally obtained by performing eigenvalue decomposition on the original measurement channel. Eigenvalue decomposition yields left and right eigenvector matrices and eigenvalues. Each eigenvector matrix contains multiple eigenvectors, and each eigenvector corresponds to an eigenvalue.

[0068] It is worth noting that, in this application, a CSI that satisfies the CSI mapping requirements corresponding to the predetermined mapping relationship can also be called a non-abnormal CSI, that is, the first specific CSI can also be called a non-abnormal CSI. Correspondingly, a CSI that does not satisfy the CSI mapping requirements corresponding to the predetermined mapping relationship can be called an abnormal CSI, that is, the second specific CSI mentioned later can also be called an abnormal CSI.

[0069] In one embodiment, when the aforementioned terminal determines the first CSI group based on the second CSI group to be fed back, there are multiple ways to achieve this. For example, the terminal can configure duplicate or identical CSIs in the first CSI group based on a first specific CSI in the second CSI group, or it can configure duplicate or identical CSIs in the first CSI group based on other CSIs besides the first specific CSI, so as to obtain the first CSI group. This can solve the problem in the related art where the CSI joint mapping process cannot be implemented when the number of CSIs to be reported is less than the number of CSIs that the joint mapping method can jointly map.

[0070] Specifically, in the case where the terminal configures duplicate or identical CSIs in the first CSI group based on the first specific CSI in the second CSI group to obtain the first CSI group, the terminal can perform CSI filling or CSI replacement based on the first specific CSI in the second CSI group to obtain the first CSI group. This ensures that the number of CSIs to be fed back is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship, while also ensuring that the filled or replaced CSIs meet the CSI mapping requirements corresponding to the predetermined mapping relationship, thus guaranteeing joint mapping performance.

[0071] As an optional implementation, suppose the second CSI group does not include any second specific CSI other than the first specific CSI, but the number of CSIs included is less than the number of CSIs that can be jointly mapped by the predetermined mapping relationship. Then, the terminal can fill in CSIs based on the first specific CSI in the second CSI group to be fed back, obtaining the first CSI group. This ensures that the number of CSIs to be fed back is the same as or matches the number of CSIs that can be jointly mapped by the predetermined mapping relationship, and that all CSIs in the first CSI group satisfy the CSI mapping requirements corresponding to the predetermined mapping relationship. This effectively ensures performance, such as compression performance and encoding performance, when applying the predetermined mapping relationship for joint CSI mapping.

[0072] For example, assuming that the predetermined mapping relationship can jointly map 5 CSIs, and the second CSI group includes 4 CSIs, such as [CSI 1, CSI 2, CSI 3, CSI 4], then the terminal can perform CSI filling based on any one of CSI 1, CSI 2, CSI 3, and CSI 4. If it is filled based on CSI 1, then the first CSI group can be, but is not limited to: [CSI 1, CSI 2, CSI 3, CSI 4, CSI 1] or [CSI 1, CSI 1, CSI 2, CSI 3, CSI 4].

[0073] Optionally, the target filling rule used by the terminal when performing CSI filling can be implemented by means of protocol agreement, network-side device configuration, or instruction, and is not limited here. For example, in this embodiment, the target filling rule may be, but is not limited to, using the first or last CSI in the second CSI group for filling, and the filled CSI is located at the end of the second CSI group, etc., and is not limited here.

[0074] As another optional implementation, assuming that the number of CSIs included in the second CSI group is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship, but the second CSI group includes a second specific CSI in addition to the first specific CSI, then the terminal can replace part or all of the second specific CSIs with the first specific CSI in the second CSI group to obtain the first CSI group. This ensures that the number of CSIs to be fed back is the same as or matches the number of CSIs that can be jointly mapped by the predetermined mapping relationship, while also effectively ensuring the performance when performing joint mapping of CSIs using the predetermined mapping relationship.

[0075] In particular, when replacing all the second specific CSIs according to the first specific CSI in the second CSI group, it can also ensure that all CSIs in the first CSI group meet the CSI mapping requirements corresponding to the predetermined mapping relationship, effectively ensuring the performance, such as compression performance and encoding performance, when performing joint CSI mapping using the predetermined mapping relationship.

[0076] In one embodiment, when the aforementioned terminal replaces the second specific CSI according to the first specific CSI in the second CSI group, it can replace the second specific CSI according to the target CSI processing rules and the first specific CSI in the second CSI group to obtain the first CSI group. The target CSI processing rules may include, but are not limited to, at least one of the following rules 1-3.

[0077] Rule 1: Replace the second specific CSI with the first specific CSI that is located before and closest to the second specific CSI.

[0078] For example, suppose the second CSI group is [CSI 1, CSI 2, CSI 3, CSI 4, CSI 5], where the second specific CSI is CSI 3, and all CSIs other than the second specific CSI are the first specific CSIs. Then, CSI 3 can be replaced by CSI 2, which is located before CSI 3. That is, the first CSI group obtained after the replacement is [CSI 1, CSI 2, CSI 2, CSI 4, CSI 5].

[0079] Rule 2: Replace the second specific CSI with the first specific CSI that is located after the second specific CSI and is closest to the second specific CSI.

[0080] For example, suppose the second CSI group is [CSI 1, CSI 2, CSI 3, CSI 4, CSI 5], where the second specific CSI is CSI 3, and all CSIs except the second specific CSI are the first specific CSIs. Then, CSI 3 can be replaced by CSI 4, which is located after CSI 3. That is, the first CSI group obtained after the replacement is [CSI 1, CSI 2, CSI 4, CSI 4, CSI 5].

[0081] Rule 3: Replace the second specific CSI with the first first specific CSI in the second CSI group.

[0082] For example, suppose the second CSI group is [CSI 1, CSI 2, CSI 3, CSI 4, CSI 5], where the second specific CSI is CSI 3, and all CSIs except the second specific CSI are first specific CSIs. Then, CSI 3 can be replaced by the first first specific CSI (i.e., CSI 1) in the second CSI group. That is, the first CSI group obtained after the replacement is [CSI 1, CSI 2, CSI 1, CSI 4, CSI 5].

[0083] The acquisition method for the aforementioned target CSI processing rules may include, but is not limited to, protocol agreements, configuration or instruction by the network-side device, etc., and is not restricted here.

[0084] Where the target CSI processing rule is configured or indicated by the network-side device, the network-side device may send first information to the terminal to indicate the target CSI processing rule. Correspondingly, the terminal receives the first information from the network-side device and obtains the target CSI processing rule based on the first information.

[0085] In one embodiment, the first information may indicate the target CSI processing rule in various ways. For example, the first information may include at least one of a first identifier and a first description.

[0086] The first identifier is used to identify the target CSI processing rule. For example, assuming the protocol stipulates multiple CSI processing rules, and the terminal and the network-side device have a consistent understanding of them, the terminal can determine the target CSI processing rule from the multiple CSI processing rules stipulated in the protocol based on the first identifier sent by the network-side device. Therefore, the overhead of indicating the target CSI processing rule can be saved by using the first identifier.

[0087] The first descriptive information is used to describe the content of the target CSI processing rule, such as at least one of the aforementioned rules 1-3. That is, the network-side device can indicate the specific content of the target CSI processing rule to the terminal, thereby ensuring the completeness of the target CSI processing rule indication.

[0088] In one embodiment, the CSIs in the aforementioned second CSI group can be associated with or correspond to different measurement resources, such as CSI-RS. Optionally, the measurement resources can be associated with at least one of measurement beams, measurement frequencies, and transmission methods. The transmission methods can include, but are not limited to, at least one of single-TRP transmission methods and multi-TRP transmission methods. The single-TRP transmission method can also be understood as centralized MIMO, and correspondingly, the multi-TRP transmission method can also be understood as distributed MIMO, without limitation.

[0089] The at least one of the measurement resource associated measurement beam, measurement frequency, and transmission method can be understood as follows: the CSI transmission scheme provided in this application can be CSI joint reporting under multiple beams, multiple frequencies, or multiple transmission methods, so as to reduce the resource overhead when reporting CSI.

[0090] In one embodiment, the terminal may further acquire a first quantity and determine the number of CSIs in the second CSI group or the first CSI group based on the first quantity. The first quantity is the maximum number of CSIs that the terminal can report.

[0091] In this embodiment, when the terminal determines the number of CSIs in the second CSI group or the first CSI group based on the first quantity, it must ensure that the number of CSIs in the second CSI group or the first CSI group is not greater than the first quantity, thereby avoiding the problem of data reporting errors.

[0092] In one embodiment, the terminal may obtain the first quantity in various ways, such as through protocol agreement, network-side configuration, etc.

[0093] Wherein, assuming the first quantity is configured by the network-side device, the network-side device may send second information to the terminal to indicate at least one of the first quantity and the target associated quantity. Correspondingly, the terminal receives the second information from the network-side device and determines the first quantity based on the second information.

[0094] The second information indicates that the first quantity can be understood as the network-side device explicitly indicating to the terminal the maximum number of CSIs that the terminal can report.

[0095] The target correlation quantity is used to determine the first quantity, that is, the second information indicates that the target correlation quantity can be understood as the network-side device implicitly indicating to the terminal the maximum number of CSIs that the terminal can report. Optionally, the target correlation quantity includes at least one of the number of measurement resources (such as CSI-RS) and the number of CSIs that the predetermined mapping relationship can jointly map.

[0096] As an optional implementation, after receiving the second information, the terminal can determine the first quantity based on the target associated quantity indicated by the second information and the quantity determination rules agreed upon in the protocol.

[0097] For example, assuming the target associated quantity is the number of CSI-RS, and the agreed-upon quantity determination rules include the number of CSI-RS being the same as the first quantity or having a predetermined linear relationship (such as multiplying by a coefficient of 1 / 2 or 1 / 4, or adding / subtracting a constant of 2 or 4), then when the network-side device indicates 4 CSI-RS and the agreed-upon quantity determination rules include the number of CSI-RS being the same as the first quantity, the terminal can determine the first quantity to be 4; or, when the network-side device indicates 4 CSI-RS and the agreed-upon quantity determination rules include the predetermined linear relationship between the number of CSI-RS and the first quantity being multiplied by a coefficient of 1 / 2, the first quantity is (4 * 1 / 2 = 2).

[0098] For example, assuming the target associated quantity is the number of CSIs that can be jointly mapped by the predetermined mapping relationship, and the agreed-upon quantity determination rules include that the number of CSIs that can be jointly mapped by the predetermined mapping relationship is the same as the first quantity or has a predetermined linear relationship (such as multiplying by a coefficient of 1 / 2 or 1 / 4, or adding / subtracting a constant of 2 or 4), then, when the network-side device indicates that the number of CSIs that can be jointly mapped by the predetermined mapping relationship is N, and the agreed-upon quantity determination rules include that the number of CSIs that can be jointly mapped by the predetermined mapping relationship is the same as the first quantity, the terminal can determine that the first quantity is N; or when the network-side device indicates that the number of CSIs that can be jointly mapped by the predetermined mapping relationship is N, and the agreed-upon predetermined linear relationship between the number of CSIs that can be jointly mapped by the predetermined mapping relationship and the first quantity is a coefficient of 1 / 4, the first quantity is (N*1 / 4 = N / 4).

[0099] In one embodiment, after the terminal sends a CSI report to the network-side device, the network-side device, upon receiving the CSI report from the terminal, can demap the target CSI in the CSI report to obtain a first CSI group, thereby realizing the transmission of the CSI to be transmitted.

[0100] Optionally, the predetermined demapping relationship used by the network-side device when demapping the target CSI corresponds to the predetermined mapping relationship used by the terminal. For example, if the predetermined mapping relationship is used for compression, then the predetermined demapping relationship is used for decompression; or, for example, if the predetermined mapping relationship is used for encoding, then the predetermined demapping relationship is used for decoding.

[0101] In one embodiment, considering that the first CSI group includes at least two duplicate or identical CSIs, the network-side device can perform deduplication processing on the first CSI group after demapping to obtain a third CSI group, so as to avoid CSI redundancy.

[0102] In order to ensure the accuracy of the deduplication result when the network-side device performs deduplication processing on the first CSI group, the terminal may also report third information to the network-side device. That is, the CSI report may also include third information to indicate at least one of the following 21)-22) to the network-side device, so that the network-side device can determine which CSIs in the demapped first CSI group are duplicates or the same based on the third information, so as to achieve deduplication processing of duplicate or the same CSIs and obtain a third CSI group.

[0103] The aforementioned "deduplication processing" can be understood as: discarding or merging duplicate or identical CSIs obtained from demapping, or taking a weighted average of duplicate or identical CSIs, etc. Furthermore, the "duplicate or identical" CSIs refer to the first CSIs that are identical during joint mapping.

[0104] 21) The corresponding position of the second specific CSI in the first CSI group.

[0105] For example, assuming the first CSI group is [CSI 1, CSI 2, CSI 4, CSI 4], and the first CSI 4 is obtained by replacing the second CSI 4, then the third information can be used to indicate that the corresponding position of the second specific CSI in the first CSI group is the 3rd position.

[0106] Optionally, if the [CSI 1, CSI 2, CSI 4, CSI 4] correspond one-to-one with the CSI-RS in the measurement resource group [CSI-RS1, CSI-RS2, CSI-RS 3, CSI-RS 4], then the third information can be carried in the first part (part 1) of the CSI report to indicate that the position of CSI-RS 3 is abnormal, thereby indirectly indicating the corresponding position of the second specific CSI in the first CSI group.

[0107] 22) The mapping order of each CSI in the first CSI group.

[0108] For example, assuming the first CSI group is [CSI 1, CSI 2, CSI 4, CSI 4], and the first CSI 4 is obtained by replacing the second CSI 4, then the mapping order indicated by the third information can be: 1, 2, 4, 4. Correspondingly, after receiving the third information, the network-side device can determine that the CSIs in the first CSI group with a mapping order of 4, 4 are duplicates or the same, and deduplication processing is required. For example, the third CSI group after deduplication is [CSI 1, CSI 2, CSI 4].

[0109] In this embodiment, the mapping order of CSIs in the first CSI group can be associated with or correspond to the order of measurement resources. That is, CSI 1 is a CSI for measurement resource 1 (such as CSI-RS1), CSI 2 is a CSI for measurement resource 2 (such as CSI-RS2), and so on. In other words, the third information can also be used by the network-side device to determine the correspondence between CSIs in the first CSI group and measurement resources for data scheduling, etc.

[0110] In one embodiment, when the aforementioned third information indicates at least one of the aforementioned 21)-22), the third information may be a newly introduced indication information in this application, or it may reuse existing indication information in related technologies.

[0111] For example, in the case of reusing existing indication information in related technologies, it is assumed that the third information can reuse the associated quantity of the measurement resource associated with or corresponding to CSI for indication. For example, when the measurement resource is CSI-RS, the third information can reuse the associated quantity CRI of CSI-RS. That is, the order of CSI-RS indicated by CRI can indicate the corresponding position of the second specific CSI in the first CSI group, or the mapping order of each CSI in the first CSI group.

[0112] For example, assuming the first CSI group is [CSI 1, CSI 2, CSI 4, CSI 4], and the first CSI 4 is obtained by replacing the second CSI 4, then if the third information is used to indicate the corresponding position of the second specific CSI in the first CSI group, the third information can be [CSI-RS1, CSI-RS2, *, CSI-RS 4]. Correspondingly, after receiving the third information, if the third information is [CSI-RS1, CSI-RS2, *, CSI-RS 4], the network-side device can determine that the CSI corresponding to "*" is the second specific CSI and discard it. That is, the deduplicated third CSI group is [CSI 1, CSI 2, CSI 4], and is associated with or corresponds to CSI-RS1, CSI-RS2, and CSI-RS 4 respectively.

[0113] Alternatively, assuming the first CSI group is [CSI 1, CSI 2, CSI 4, CSI 4], and the first CSI 4 is obtained by replacing the second CSI 4, then the third information is used to indicate the mapping order of each CSI in the first CSI group. Therefore, the third information can be [CSI-RS1, CSI-RS2, CSI-RS 4, CSI-RS 4]. Correspondingly, after receiving the third information, if the third information is [CSI-RS1, CSI-RS2, CSI-RS 4, CSI-RS 4], the network-side device can determine that the CSIs with mapping order 4 in the demapped first CSI group are duplicates or identical, and deduplication processing is required. For example, the deduplicated third CSI group is [CSI 1, CSI 2, CSI 4], and is associated with or corresponds to CSI-RS1, CSI-RS 2, and CSI-RS 4 respectively.

[0114] In some embodiments, the network-side device may also send fourth information to the terminal to instruct the terminal whether to report third information. Correspondingly, after receiving the fourth information from the network-side device, the terminal can determine whether to report the third information based on the fourth information. For example, when instructing the terminal to report the third information, the terminal includes the third information in the CSI report; otherwise, it does not include the third information, thereby ensuring that the information reported by the terminal matches the needs of the network-side device.

[0115] In addition to the reporting of the third information, if the terminal configures duplicate or identical CSIs in the first CSI group, and the terminal and the network-side device have a consistent understanding of the configuration method (such as CSI filling rules and target CSI processing rules), such as through protocol agreement or network-side device configuration or instruction, then the network-side device can directly perform deduplication processing on the first CSI group according to the configuration method (such as CSI filling rules and target CSI processing rules) agreed upon by the protocol or configured or instructed by the network-side device.

[0116] In one embodiment, the predetermined mapping relationship and predetermined demapping relationship mentioned in the context of this application can be implemented based on an AI unit, but are not limited to this. In this case, the "number of CSIs that the predetermined mapping relationship can jointly map" mentioned above can be understood as the number of CSIs that the AI ​​unit can input. Correspondingly, the "CSI mapping requirement" mentioned above can also be understood as: requiring the beam RSRP corresponding to the CSI input to the AI ​​unit to be higher than a first threshold, or the feature value corresponding to the CSI to be higher than a second threshold, etc., to ensure the gain when performing joint mapping of CSIs based on the AI ​​unit.

[0117] For the predetermined mapping relationship, the AI ​​unit may include, but is not limited to, at least one of the following 31)-34).

[0118] 31) The AI ​​unit used by the terminal.

[0119] 32) The reference AI unit of the AI ​​unit used by the terminal.

[0120] 33) The AI ​​unit used in the terminal or testing equipment during testing.

[0121] 34) The reference AI unit of the AI ​​unit used in the test by the terminal or test equipment.

[0122] For a predetermined demapping relationship, the AI ​​unit may include, but is not limited to, at least one of the following 41)-44).

[0123] 41) The AI ​​unit used by the network-side device.

[0124] 42) The reference AI unit of the AI ​​unit used by the network-side device.

[0125] 43) The AI ​​unit used in the network-side device or test device during the test.

[0126] 44) The reference AI unit of the AI ​​unit used by the network-side device or test device in the test.

[0127] In the aforementioned CSI transmission scheme provided in this application embodiment, it can be ensured that even if the terminal measurement finds that the number of CSIs to be jointly mapped does not meet the number of CSIs that can be jointly mapped by the predetermined mapping relationship, it can still ensure that the CSIs that meet the CSI mapping requirements are jointly mapped by configuring duplicate or identical CSIs, thereby ensuring the transmission performance of CSIs, such as reporting accuracy.

[0128] Based on the aforementioned description of the CSI transmission scheme, the implementation process is further illustrated below with reference to Example 1.

[0129] Example 1

[0130] S310, Data Collection.

[0131] Among them, the network-side device can be configured to measure the CSI on multiple measurement resources (such as CSI-RS) and report the measured CSI and its associated CSI-RS information to the network-side device for the configuration of a predetermined mapping relationship.

[0132] Optionally, if the predetermined mapping relationship is implemented based on the AI ​​unit, the data reported in S310 can be used for training the AI ​​unit.

[0133] Optionally, the terminal may report the collected data via air interface or RRC signaling.

[0134] S320, reporting of terminal capability information.

[0135] During the capability reporting phase, the terminal informs the network-side device whether the current terminal supports the function of multi-CSI joint mapping based on a predetermined mapping relationship.

[0136] In the case where the predetermined mapping relationship is implemented based on AI units, the terminal may also report whether it supports a specific AI unit structure, etc. The specific model structure may include, but is not limited to, one or more of the following: a fully connected model, a convolutional network model, etc.

[0137] S330, Determination of the predetermined mapping relationship and the predetermined demapping relationship.

[0138] When the predetermined mapping relationship and the predetermined demapping relationship corresponding to the predetermined mapping relationship are implemented based on AI units, the network-side device can train the AI ​​unit based on the collected CSIs after collecting multiple CSIs, such as training a complete AI unit (such as an encoder) for multi-CSI joint mapping and an AI unit (such as a decoder) for multi-CSI joint demapping.

[0139] Optionally, the training methods for the aforementioned AI units may include joint training on a single node, joint training on multiple nodes, separate (or step-by-step) training on multiple nodes, etc., which will not be elaborated here.

[0140] In the case of joint training on a single node, the network-side device can send the AI ​​unit corresponding to the predetermined mapping relationship and related information (such as the identifier of the AI ​​unit) to the terminal after the training is completed.

[0141] For joint training on multiple nodes, the complete model can be jointly trained on network-side devices and terminals by exchanging forward / backward propagation information and AI unit identification information. For example, the network side is responsible for updating the AI ​​units (such as decoders) used for multi-CSI joint demapping, and the terminal side is responsible for updating the AI ​​units (such as encoders) used for multi-CSI joint mapping.

[0142] For separate (or step-by-step) training on multiple nodes, the network-side device first trains the complete model, such as the decoder, and then trains the encoder part that can be paired with the decoder by interacting with the dataset and the identification information of the AI ​​unit (such as dataset ID).

[0143] Optionally, during the training phase, the network-side devices and terminal-side devices can prepare multiple available models, each corresponding to a different application scope. For example, Model 1 can jointly map 2 CSIs, and Model 2 can jointly compress 4 CSIs, etc.

[0144] Optionally, during the training phase, model input requirements (also known as CSI mapping requirements) are typically determined. For example, the beam RSRP corresponding to each CSI in the model joint mapping must exceed a first threshold, or the corresponding feature value must exceed a second threshold.

[0145] S340, the network-side device sends target configuration information to the terminal for the terminal to perform joint mapping of multiple CSIs.

[0146] The target configuration information includes at least one of the following.

[0147] 41) The fifth piece of information is used to indicate the CSI that the terminal needs to jointly report.

[0148] Optionally, the indication method of the fifth information includes the network-side device indicating the measurement resource associated with the CSI that needs to be reported, such as CSI-RS.

[0149] For example, assuming the fifth information indicates 4 or 8 CSI-RS resources, then the terminal needs to jointly report the CSIs corresponding to the 4 or 8 CSI-RS resources, that is, 4 or 8 CSIs.

[0150] The CSI can refer to at least one of PMI, CQ, RI, channel, and channel correlation matrix, but it usually refers to PMI or channel.

[0151] 42) The sixth piece of information is used to indicate at least one of the available models and the CSI mapping requirements corresponding to the available models.

[0152] Optionally, when the sixth information indicates the available model, the sixth information may include the identification information of the available model, such as model ID, dataset ID, and pairing ID. The way the identification information is indicated is related to the method used to identify the model in S330.

[0153] Optionally, when the sixth information is used to indicate the CSI mapping requirements corresponding to the available model, the CSI mapping requirements here mean that the beam RSRP corresponding to each CSI in the model joint mapping must exceed a first threshold, or the corresponding feature value must exceed a second threshold, etc. The CSI mapping requirements can be aligned in S330 (i.e., the model training phase) or indicated in this step; no restriction is placed here.

[0154] 43) First information, used to indicate the target CSI processing rules.

[0155] The first information includes at least one of a first identifier and first descriptive information. The first identifier is used to identify the target CSI processing rule; the first descriptive information is used to describe the content of the target CSI processing rule.

[0156] Optionally, the target CSI processing rule includes at least one of the following rules 1-3.

[0157] Rule 1: Replace the second specific CSI with the first specific CSI that is located before and closest to the second specific CSI.

[0158] Rule 2: Replace the second specific CSI with the first specific CSI that is located after the second specific CSI and is closest to the second specific CSI.

[0159] Rule 3: Replace the second specific CSI with the first first specific CSI in the second CSI group.

[0160] 4) Second information, used to indicate a first quantity, which is the maximum number of CSIs that the terminal can report.

[0161] Optionally, the second information may directly indicate the first quantity or indirectly indicate the target associated quantity.

[0162] For example, when the second information indirectly indicates the target associated quantity, the terminal can determine the first quantity based on the target associated quantity and the quantity determination rules agreed upon in the protocol.

[0163] For example, assuming the target associated quantity is the number of CSI-RS, and the agreed-upon quantity determination rules include the number of CSI-RS being the same as the first quantity or having a predetermined linear relationship (such as multiplying by a coefficient of 1 / 2 or 1 / 4, or adding / subtracting a constant of 2 or 4), then when the network-side device indicates 4 CSI-RS and the agreed-upon quantity determination rules include the number of CSI-RS being the same as the first quantity, the terminal can determine the first quantity to be 4; or, when the network-side device indicates 4 CSI-RS and the agreed-upon quantity determination rules include the predetermined linear relationship between the number of CSI-RS and the first quantity being multiplied by a coefficient of 1 / 2, the first quantity is (4 * 1 / 2 = 2).

[0164] For example, assuming the target associated quantity is the number of CSIs that can be jointly mapped by the predetermined mapping relationship, and the agreed-upon quantity determination rules include that the number of CSIs that can be jointly mapped by the predetermined mapping relationship is the same as the first quantity or has a predetermined linear relationship (such as multiplying by a coefficient of 1 / 2 or 1 / 4, or adding / subtracting a constant of 2 or 4), then, when the network-side device indicates that the number of CSIs that can be jointly mapped by the predetermined mapping relationship is N, and the agreed-upon quantity determination rules include that the number of CSIs that can be jointly mapped by the predetermined mapping relationship is the same as the first quantity, the terminal can determine that the first quantity is N; or when the network-side device indicates that the number of CSIs that can be jointly mapped by the predetermined mapping relationship is N, and the agreed-upon predetermined linear relationship between the number of CSIs that can be jointly mapped by the predetermined mapping relationship and the first quantity is a coefficient of 1 / 4, the first quantity is (N*1 / 4 = N / 4).

[0165] S350, the terminal measures the CSI of each CSI-RS to determine the second CSI group to be fed back.

[0166] S360, the terminal determines that the number of CSIs included in the second CSI group is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship, but the second CSI group includes a second specific CSI, that is, a CSI that does not meet the CSI mapping requirements corresponding to the predetermined mapping relationship. Then, the terminal can process the second CSI group according to the target CSI processing rules indicated in S340 to obtain the first CSI group.

[0167] For example, assuming the network-side device is configured with 8 CSI-RS, the terminal can report a maximum of 4 CSIs, and the predetermined mapping relationship used by the terminal can jointly map 4 CSIs, then the terminal can select 4 CSIs from the 8 CSI-RS to determine the second CSI group, such as [CSI 0, CSI 1, CSI 3, CSI 4].

[0168] Next, assuming that the terminal measurement finds that there are only 3 CSIs (i.e., the first specific CSIs) in the second CSI group that meet the CSI mapping requirements corresponding to the predetermined mapping relationship, such as CSI-RS0, CSI-RS1, and CSI-RS3, then the terminal can process the second CSI group according to the target CSI processing rules provided in S340, that is, replace the CSIs in the second CSI group that do not meet the CSI mapping requirements with a CSI that meets the CSI mapping requirements to obtain the first CSI group, such as [CSI-RS0, CSI-RS1, CSI-RS3, CSI-RS3].

[0169] S370, the terminal performs joint mapping on each CSI in the first CSI group based on a predetermined mapping relationship to obtain the target CSI.

[0170] S380, the terminal sends a CSI report to the network-side device, the CSI report including the target CSI and third-party information.

[0171] If the fourth CSI in the second CSI group does not meet the CSI mapping requirements, then the third information is used to indicate at least one of the following a)-c).

[0172] a) The mapping order of each CSI in the first CSI group, such as the mapping order of the CSIs in the first CSI group can be indicated by the order of the measurement resources [CSI-RS0, CSI-RS1, CSI-RS3, CSI-RS3].

[0173] Optionally, the second information may be carried in CSI reporting part 1.

[0174] b) The corresponding position of the second specific CSI in the first CSI group, such as [CSI 0, CSI 1, CSI 3, *] (* represents the position of the second specific CSI).

[0175] c) The corresponding position of the second specific CSI in the first CSI group: If the network-side device indicates that the terminal jointly compresses [CSI-RS0, CSI-RS1, CSI-RS3, CSI-RS4] to [CSI 0, CSI 1, CSI 3, CSI 4], then the terminal can only report the position of the CSI that caused the anomaly in the input, i.e., the fourth position.

[0176] S390, after receiving the CSI report, the network-side device demaps the target CSI based on a predetermined demapping relationship to obtain a first CSI group, and then performs deduplication processing on the first CSI group according to the third information to separate the third CSI group, and determines which measurement resources each CSI in the recovered third CSI group corresponds to according to the third information.

[0177] For example, if a terminal reports the joint mapping result of the first CSI group [CSI 0, CSI 1, CSI 3, CSI 3], i.e. the target CSI, and indicates the mapping order of [CSI 0, CSI 1, CSI 3, CSI 3], then the network-side device can determine that the mapping order of the CSIs at the third and fourth positions is the same, and can discard one of them. It can then determine that the CSIs actually transmitted by the terminal are [CSI 0, CSI 1, CSI 3], and the corresponding measurement resources are CSI-RS0, CSI-RS1, and CSI-RS3, respectively.

[0178] If the terminal indicates [CSI 0, CSI 1, CSI 3, *], then the network-side device can determine that the fourth CSI does not meet the CSI mapping requirements. Therefore, the CSI corresponding to the * position can be discarded, and the CSI actually transmitted by the terminal is determined to be [CSI0, CSI 1, CSI 3], and the corresponding measurement resources are CSI-RS0, CSI-RS1, and CSI-RS3 respectively.

[0179] If the network-side device indicates the CSIs corresponding to the joint mapping [CSI-RS0, CSI-RS1, CSI-RS3, CSI-RS4] for the terminal, and the terminal reports that the abnormal CSI is mapped to the fourth position in the joint mapping, then the network-side device can determine that the CSI corresponding to CSI-RS4 does not meet the CSI mapping requirements. Therefore, the CSI at the fourth position in [CSI 0, CSI 1, CSI 3, CSI3] can be discarded. This determines that the terminal actually transmitted the CSIs corresponding to CSI-RS0, CSI-RS1, and CSI-RS3, i.e., [CSI 0, CSI 1, CSI 3], and the corresponding measurement resources are CSI-RS0, CSI-RS1, and CSI-RS3, respectively.

[0180] It is understood that the CSI transmission process provided in Example 1 may include, but is not limited to, the aforementioned steps. For example, it may include more or fewer steps than those mentioned above, without any limitation.

[0181] like Figure 4 The diagram shown illustrates a flowchart of a CSI transmission method 400 provided in an exemplary embodiment of this application. This method 400 can be executed by, but is not limited to, a network-side device, specifically by hardware and / or software installed in the network-side device. In this embodiment, the method 400 may include at least the following steps.

[0182] S410, the network-side device receives a CSI report from the terminal, the CSI report including the target CSI.

[0183] S420, the network-side device demaps the target CSI to a first CSI group.

[0184] The first CSI group includes at least two duplicate or identical CSIs, and the number of CSIs in the first CSI group is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship corresponding to the target CSI.

[0185] In one embodiment, the method further includes: the network-side device performing deduplication processing on the first CSI group to obtain a third CSI group; wherein the number of CSIs included in the third CSI group is less than the number of CSIs that can be jointly mapped by the predetermined mapping relationship, and all CSIs included in the third CSI group are CSIs that meet the CSI mapping requirements corresponding to the predetermined mapping relationship.

[0186] In one embodiment, the network-side device performs deduplication processing on the first CSI group to obtain a third CSI group, including: if the CSI report further includes third information, the network-side device performs deduplication processing on the first CSI group according to the third information to obtain a third CSI group; wherein, the third information is used to indicate at least one of the following: the corresponding position of the second specific CSI in the first CSI group, wherein the second specific CSI includes CSIs that do not meet the CSI mapping requirements corresponding to the predetermined mapping relationship; the mapping order of each CSI in the first CSI group.

[0187] In one embodiment, the method further includes: the network-side device sending first information to the terminal; wherein the first information is used to indicate a target CSI processing rule when determining the first CSI group, the target CSI processing rule including at least one of the following: replacing a second specific CSI in the second CSI group with a first specific CSI located before and closest to the second specific CSI; replacing a second specific CSI in the second CSI group with a first specific CSI located after and closest to the second specific CSI; replacing a second specific CSI in the second CSI group with the first first specific CSI in the second CSI group; wherein the number of first specific CSIs included in the second CSI group is less than the number of CSIs that can be jointly mapped by the predetermined mapping relationship, the first specific CSIs include CSIs that satisfy the CSI mapping requirements corresponding to the predetermined mapping relationship, and the second specific CSIs include CSIs that do not satisfy the CSI mapping requirements corresponding to the predetermined mapping relationship.

[0188] In one embodiment, the first information includes at least one of the following: a first identifier for identifying the target CSI processing rule; and first description information for describing the content of the target CSI processing rule.

[0189] In one embodiment, the method further includes: the network-side device sending fourth information to the terminal; wherein the fourth information is used to indicate whether the terminal reports the third information.

[0190] In one embodiment, the method further includes: the network-side device sending second information to the terminal; wherein the second information is used to indicate a first quantity, wherein the first quantity is the maximum number of CSIs that the terminal can report.

[0191] In one embodiment, the second information is used to indicate at least one of the following: the first quantity; and a target correlation quantity, the target correlation quantity being used to determine the first quantity, the target correlation quantity including at least one of the quantity of measurement resources and the quantity of CSIs that can be jointly mapped by a predetermined mapping relationship.

[0192] The embodiments mentioned in this method embodiment 400 have the same or corresponding technical features as the aforementioned method embodiment 200. Therefore, the implementation of each embodiment in this method embodiment 400 can refer to the relevant description in the aforementioned method embodiment 200 and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0193] The CSI transmission method provided in this application can be executed by a CSI transmission device. This application uses an example of a CSI transmission device executing the CSI transmission method to illustrate the CSI transmission device provided in this application.

[0194] This application provides a CSI transmission device. As an example, the CSI transmission device can be a communication device or a component within a communication device, such as a chip. The communication device can be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal can be of the type including but not limited to the terminal 11 listed above, and the network-side device can be of the type including but not limited to the network-side device 12 listed above. This application does not impose specific limitations.

[0195] CSI's transmission device includes a transmission module (such as a receiving module and a transmitting module) and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, such as a Central Processing Unit (CPU), microprocessor, Digital Signal Processor (DSP), Artificial Intelligence (AI) processor, Graphics Processing Unit (GPU), Application Specific Integrated Circuit (ASIC), Network Processor (NP), Field Programmable Gate Array (FPGA), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceiver, pins, circuits, bus, radio frequency unit, etc.

[0196] For details, see Figure 5 When the CSI transmission device 500 is a terminal or a component within a terminal, the CSI transmission device 500 includes a processing module 510 for jointly mapping each CSI in a first CSI group to a target CSI based on a predetermined mapping relationship; and a transmission module 520 for sending a CSI report to a network-side device, the CSI report including the target CSI; wherein the first CSI group includes at least two duplicate or identical CSIs, and the number of CSIs in the first CSI group is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship.

[0197] In one embodiment, the processing module 510 is further configured to: determine the first CSI group based on the second CSI group to be fed back; wherein the number of first specific CSIs included in the second CSI group is less than the number of CSIs that can be jointly mapped by the predetermined mapping relationship, and the first specific CSIs include CSIs that satisfy the CSI mapping requirements corresponding to the predetermined mapping relationship.

[0198] In one embodiment, determining the first CSI group based on the second CSI group to be fed back includes: performing CSI filling or CSI replacement based on a first specific CSI in the second CSI group to be fed back, to obtain the first CSI group.

[0199] In one embodiment, the step of replacing CSIs based on the first specific CSI in the second CSI group to be fed back to obtain the first CSI group includes: if the second CSI group includes a second specific CSI, replacing the second specific CSI with the first specific CSI in the second CSI group to obtain the first CSI group; wherein the second specific CSI includes CSIs that do not meet the CSI mapping requirements corresponding to the predetermined mapping relationship.

[0200] In one embodiment, the second CSI group satisfies at least one of the following: the number of CSIs in the second CSI group is the same as the number of CSIs that can be mapped by the predetermined mapping relationship; and the CSIs in the second CSI group are associated with or correspond to different measurement resources.

[0201] In one embodiment, the step of replacing the second specific CSI with a first specific CSI in the second CSI group to obtain the first CSI group includes: replacing the second specific CSI with a target CSI processing rule and a first specific CSI in the second CSI group to obtain the first CSI group; wherein the target CSI processing rule includes at least one of the following: replacing the second specific CSI with a first specific CSI that precedes and is closest to the second specific CSI; replacing the second specific CSI with a first specific CSI that follows and is closest to the second specific CSI; replacing the second specific CSI with the first first specific CSI in the second CSI group.

[0202] In one embodiment, the method of obtaining the target CSI processing rule includes at least one of the following: protocol agreement; configuration or instruction by the network-side device.

[0203] In one embodiment, when the target CSI processing rule is configured or indicated by the network-side device, the transmission module 520 is further configured to: receive first information from the network-side device; wherein the first information includes at least one of the following: a first identifier for identifying the target CSI processing rule; and first description information for describing the content of the target CSI processing rule.

[0204] In one embodiment, the transmission module 520 is further configured to obtain a first quantity, wherein the first quantity is the maximum number of CSIs that the terminal can report; the processing module 510 is further configured to determine the number of CSIs in the second CSI group or the first CSI group based on the first quantity.

[0205] In one embodiment, obtaining the first quantity includes: receiving second information from the network-side device; wherein the second information is used to indicate at least one of the following: the first quantity; a target association quantity, the target association quantity being used to determine the first quantity, the target association quantity including at least one of the quantity of measurement resources and the quantity of CSIs that the predetermined mapping relationship can jointly map.

[0206] In one embodiment, the measurement resource is associated with at least one of the following: measurement beam, measurement frequency, and transmission mode.

[0207] In one embodiment, the CSI report further includes third information indicating at least one of the following: the corresponding position of the second specific CSI in the first CSI group; and the mapping order of the CSIs in the first CSI group.

[0208] In one embodiment, the transmission module 520 is further configured to receive fourth information from the network-side device, the fourth information being used to indicate whether the terminal should report third information.

[0209] In one embodiment, the predetermined mapping relationship is implemented based on an AI unit, wherein the AI ​​unit includes at least one of the following: an AI unit used by the terminal; a reference AI unit of the AI ​​unit used by the terminal; an AI unit used by the terminal or test device in the test; and a reference AI unit of the AI ​​unit used by the terminal or test device in the test.

[0210] The CSI transmission device 500 provided in this application embodiment can achieve Figure 2 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0211] See Figure 6 When the CSI transmission device 600 is a network-side device or a component of a network-side device, the CSI transmission device 600 includes a transmission module 610 for receiving a CSI report from a terminal, the CSI report including a target CSI; and a processing module 620 for demapping the target CSI into a first CSI group; wherein the first CSI group includes at least two duplicate or identical CSIs, and the number of CSIs in the first CSI group is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship corresponding to the target CSI.

[0212] In one embodiment, the processing module 620 is further configured to perform deduplication processing on the first CSI group to obtain a third CSI group; wherein the number of CSIs included in the third CSI group is less than the number of CSIs that can be jointly mapped by the predetermined mapping relationship, and all CSIs included in the third CSI group satisfy the CSI mapping requirements corresponding to the predetermined mapping relationship.

[0213] In one embodiment, the step of deduplicating the first CSI group to obtain a third CSI group includes: if the CSI report further includes third information, deduplicating the first CSI group according to the third information to obtain a third CSI group; wherein the third information is used to indicate at least one of the following: the corresponding position of the second specific CSI in the first CSI group, wherein the second specific CSI includes CSIs that do not meet the CSI mapping requirements corresponding to the predetermined mapping relationship; and the mapping order of each CSI in the first CSI group.

[0214] In one embodiment, the transmission module 610 is further configured to: send first information to the terminal; wherein the first information is configured to indicate a target CSI processing rule when determining the first CSI group, the target CSI processing rule including at least one of the following: replacing a second specific CSI in the second CSI group with a first specific CSI located before and closest to the second specific CSI; replacing a second specific CSI in the second CSI group with a first specific CSI located after and closest to the second specific CSI; replacing a second specific CSI in the second CSI group with the first first specific CSI in the second CSI group; wherein the number of first specific CSIs included in the second CSI group is less than the number of CSIs that can be jointly mapped by the predetermined mapping relationship, the first specific CSIs include CSIs that satisfy the CSI mapping requirements corresponding to the predetermined mapping relationship, and the second specific CSIs include CSIs that do not satisfy the CSI mapping requirements corresponding to the predetermined mapping relationship.

[0215] In one embodiment, the first information includes at least one of the following: a first identifier for identifying the target CSI processing rule; and first description information for describing the content of the target CSI processing rule.

[0216] In one embodiment, the transmission module 610 is further configured to: send fourth information to the terminal; wherein the fourth information is used to indicate whether the terminal should report the third information.

[0217] In one embodiment, the transmission module 610 is further configured to: send second information to the terminal; wherein the second information is used to indicate a first quantity, wherein the first quantity is the maximum number of CSIs that the terminal can report.

[0218] In one embodiment, the second information is used to indicate at least one of the following: the first quantity; and a target correlation quantity, the target correlation quantity being used to determine the first quantity, the target correlation quantity including at least one of the quantity of measurement resources and the quantity of CSIs that can be jointly mapped by a predetermined mapping relationship.

[0219] The CSI transmission device provided in this application embodiment can achieve Figure 4 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0220] like Figure 7 As shown, this application embodiment also provides a communication device 700, including a processor 701 and a memory 702. The memory 702 stores programs or instructions that can run on the processor 701. For example, when the communication device 700 is a terminal, the program or instructions executed by the processor 701 implement the various steps of the above-described CSI transmission method embodiment and achieve the same technical effect. When the communication device 700 is a network-side device, the program or instructions executed by the processor 701 implement the various steps of the above-described CSI transmission method embodiment and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0221] This application embodiment also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figure 2 The steps in the method embodiment shown are illustrated. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. The terminal can be... Figure 5 The CSI transmission device 500 shown. Specifically, Figure 8 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0222] The terminal 800 includes, but is not limited to, at least some of the following components: radio frequency unit 801, network module 802, audio output unit 803, input unit 804, sensor 805, display unit 806, user input unit 807, interface unit 808, memory 809, and processor 810.

[0223] Those skilled in the art will understand that the terminal 800 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 810 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 8 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0224] It should be understood that, in this embodiment, the input unit 804 may include a graphics processor 8041 and a microphone 8042. The graphics processor 8041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 806 may include a display panel 8061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 807 includes at least one of a touch panel 8071 and other input devices 8072. The touch panel 8071 is also called a touch screen. The touch panel 8071 may include two parts: a touch detection device and a touch controller. Other input devices 8072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0225] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 801 can transmit it to the processor 810 for processing; in addition, the radio frequency unit 801 can send uplink data to the network-side device. Typically, the radio frequency unit 801 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0226] The memory 809 can be used to store software programs or instructions, as well as various data. The memory 809 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 809 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 809 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0227] Processor 810 may include one or more processing units; optionally, processor 810 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 810.

[0228] The processor 810 is configured to jointly map each CSI in the first CSI group to a target CSI based on a predetermined mapping relationship; the radio frequency unit 801 is configured to send a CSI report to the network-side device, the CSI report including the target CSI; wherein the first CSI group includes at least two duplicate or identical CSIs, and the number of CSIs in the first CSI group is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship.

[0229] In one embodiment, the processor 810 is further configured to: determine the first CSI group based on the second CSI group to be fed back; wherein the number of first specific CSIs included in the second CSI group is less than the number of CSIs that can be jointly mapped by the predetermined mapping relationship, and the first specific CSIs include CSIs that satisfy the CSI mapping requirements corresponding to the predetermined mapping relationship.

[0230] In one embodiment, determining the first CSI group based on the second CSI group to be fed back includes: performing CSI filling or CSI replacement based on a first specific CSI in the second CSI group to be fed back, to obtain the first CSI group.

[0231] In one embodiment, the step of replacing CSIs based on the first specific CSI in the second CSI group to be fed back to obtain the first CSI group includes: if the second CSI group includes a second specific CSI, replacing the second specific CSI with the first specific CSI in the second CSI group to obtain the first CSI group; wherein the second specific CSI includes CSIs that do not meet the CSI mapping requirements corresponding to the predetermined mapping relationship.

[0232] In one embodiment, the second CSI group satisfies at least one of the following: the number of CSIs in the second CSI group is the same as the number of CSIs that can be mapped by the predetermined mapping relationship; and the CSIs in the second CSI group are associated with or correspond to different measurement resources.

[0233] In one embodiment, the step of replacing the second specific CSI with a first specific CSI in the second CSI group to obtain the first CSI group includes: replacing the second specific CSI with a target CSI processing rule and a first specific CSI in the second CSI group to obtain the first CSI group; wherein the target CSI processing rule includes at least one of the following: replacing the second specific CSI with a first specific CSI that precedes and is closest to the second specific CSI; replacing the second specific CSI with a first specific CSI that follows and is closest to the second specific CSI; replacing the second specific CSI with the first first specific CSI in the second CSI group.

[0234] In one embodiment, the method of obtaining the target CSI processing rule includes at least one of the following: protocol agreement; configuration or instruction by the network-side device.

[0235] In one embodiment, when the target CSI processing rule is configured or indicated by the network-side device, the radio frequency unit 801 is further configured to: receive first information from the network-side device; wherein the first information includes at least one of the following: a first identifier for identifying the target CSI processing rule; and first description information for describing the content of the target CSI processing rule.

[0236] In one embodiment, the radio frequency unit 801 is further configured to acquire a first quantity, wherein the first quantity is the maximum number of CSIs that the terminal can report; the processor 810 is further configured to determine the number of CSIs in the second CSI group or the first CSI group based on the first quantity.

[0237] In one embodiment, obtaining the first quantity includes: receiving second information from the network-side device; wherein the second information is used to indicate at least one of the following: the first quantity; a target association quantity, the target association quantity being used to determine the first quantity, the target association quantity including at least one of the quantity of measurement resources and the quantity of CSIs that the predetermined mapping relationship can jointly map.

[0238] In one embodiment, the measurement resource is associated with at least one of the following: measurement beam, measurement frequency, and transmission mode.

[0239] In one embodiment, the CSI report further includes third information indicating at least one of the following: the corresponding position of the second specific CSI in the first CSI group; and the mapping order of the CSIs in the first CSI group.

[0240] In one embodiment, the radio frequency unit 801 is further configured to receive fourth information from the network-side device, the fourth information being used to indicate whether the terminal should report third information.

[0241] In one embodiment, the predetermined mapping relationship is implemented based on an AI unit, wherein the AI ​​unit includes at least one of the following: an AI unit used by the terminal; a reference AI unit of the AI ​​unit used by the terminal; an AI unit used by the terminal or test device in the test; and a reference AI unit of the AI ​​unit used by the terminal or test device in the test.

[0242] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of method embodiment 200 and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0243] This application embodiment also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figure 4 The steps of the method embodiment shown are illustrated. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0244] Specifically, embodiments of this application also provide a network-side device, which may be... Figure 6 The CSI transmission device shown. For example... Figure 9 As shown, the network-side device 900 includes: an antenna 901, a radio frequency (RF) device 902, a baseband device 903, a processor 904, and a memory 905. The antenna 901 is connected to the RF device 902. In the uplink direction, the RF device 902 receives information through the antenna 901 and transmits the received information to the baseband device 903 for processing. In the downlink direction, the baseband device 903 processes the information to be transmitted and sends it to the RF device 902. The RF device 902 processes the received information and transmits it through the antenna 901.

[0245] The method executed by the network-side device 900 in the above embodiments can be implemented in the baseband device 903, which includes a baseband processor.

[0246] The baseband device 903 may, for example, include at least one baseband board on which multiple chips are disposed, such as... Figure 9 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 905 via a bus interface to call the program in the memory 905 and execute the network device operations shown in the above method embodiment.

[0247] The network-side device 900 may also include a network interface 906, such as a Common Public Radio Interface (CPRI).

[0248] Specifically, the network-side device 900 in this embodiment further includes: instructions or programs stored in memory 905 and executable on processor 904, wherein processor 904 calls the instructions or programs in memory 905 to execute. Figure 6 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0249] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described CSI transmission method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0250] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0251] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described CSI transmission method embodiment and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0252] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0253] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described CSI transmission method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0254] This application also provides a wireless communication system, including a terminal and a network-side device. The terminal can be used to implement the various processes of the above-described CSI transmission method embodiment 200, and the network-side device can be used to implement the various processes of the above-described CSI transmission method embodiment 400, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0255] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0256] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0257] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A method for transmitting Channel State Information (CSI), characterized in that, include: The terminal jointly maps each CSI in the first CSI group to the target CSI based on a predetermined mapping relationship; The terminal sends a CSI report to the network-side device, and the CSI report includes the target CSI. The first CSI group includes at least two duplicate or identical CSIs, and the number of CSIs in the first CSI group is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship.

2. The method as described in claim 1, characterized in that, The method further includes: The terminal determines the first CSI group based on the second CSI group to be fed back; Wherein, the number of first specific CSIs included in the second CSI group is less than the number of CSIs that can be jointly mapped by the predetermined mapping relationship, and the first specific CSIs include CSIs that satisfy the CSI mapping requirements corresponding to the predetermined mapping relationship.

3. The method as described in claim 2, characterized in that, The terminal determines the first CSI group based on the second CSI group to be fed back, including: The terminal performs CSI filling or CSI replacement based on the first specific CSI in the second CSI group to be fed back, thereby obtaining the first CSI group.

4. The method as described in claim 3, characterized in that, The terminal performs CSI replacement based on a first specific CSI in the second CSI group to be fed back, thereby obtaining the first CSI group, which includes: If the second CSI group includes a second specific CSI, the terminal replaces the second specific CSI with a first specific CSI in the second CSI group to obtain the first CSI group. The second specific CSI includes CSIs that do not meet the CSI mapping requirements corresponding to the predetermined mapping relationship.

5. The method as described in claim 4, characterized in that, The terminal replaces the second specific CSI with a first specific CSI from the second CSI group to obtain the first CSI group, including: The terminal replaces the second specific CSI with the first specific CSI in the second CSI group according to the target CSI processing rules and the first specific CSI in the second CSI group to obtain the first CSI group; The target CSI processing rule includes at least one of the following: Replace the second specific CSI with the first specific CSI that is located before and closest to the second specific CSI; Replace the second specific CSI with the first specific CSI that is located after the second specific CSI and closest to the second specific CSI; Replace the second specific CSI with the first first specific CSI in the second CSI group.

6. The method as described in claim 5, characterized in that, The method for obtaining the target CSI processing rules includes at least one of the following: The agreement stipulates; Configured or instructed by the network-side device.

7. The method as described in claim 6, characterized in that, When the target CSI processing rule is configured or indicated by the network-side device, the method further includes: The terminal receives first information from the network-side device; The first information includes at least one of the following: The first identifier is used to identify the target CSI processing rule; The first descriptive information describes the content of the target CSI processing rule.

8. The method according to any one of claims 1-7, characterized in that, The method further includes: The terminal acquires a first quantity, wherein the first quantity is the maximum number of CSIs that the terminal can report; The terminal determines the number of CSIs in the second CSI group or the first CSI group based on the first number.

9. The method as described in claim 8, characterized in that, The terminal acquires the first quantity, including: The terminal receives second information from the network-side device; The second information is used to indicate at least one of the following: The first quantity; The target correlation quantity is used to determine the first quantity, and the target correlation quantity includes at least one of the quantity of measurement resources and the quantity of CSIs that the predetermined mapping relationship can jointly map.

10. The method according to any one of claims 2-9, characterized in that, The second CSI group satisfies at least one of the following: The number of CSIs in the second CSI group is the same as the number of CSIs that can be mapped by the predetermined mapping relationship; The CSIs in the second CSI group are associated with or correspond to different measurement resources.

11. The method as described in claim 9 or 10, characterized in that, The measurement resource is associated with at least one of the following: measurement beam, measurement frequency, and transmission mode.

12. The method according to any one of claims 1-11, characterized in that, The CSI report also includes third information that indicates at least one of the following: The corresponding position of the second specific CSI in the first CSI group; The mapping order of each CSI in the first CSI group.

13. The method according to any one of claims 1-12, characterized in that, The method further includes: The terminal receives fourth information from the network-side device, the fourth information being used to indicate whether the terminal should report third information.

14. The method according to any one of claims 1-13, characterized in that, The predetermined mapping relationship is implemented based on an artificial intelligence (AI) unit, wherein the AI ​​unit includes at least one of the following: The terminal uses an AI unit; The reference AI unit used by the terminal; The AI ​​unit used in the terminal or testing equipment during testing; The reference AI unit of the AI ​​unit used by the terminal or testing equipment in the test.

15. A method for transmitting Channel State Information (CSI), characterized in that, include: The network-side device receives a CSI report from the terminal, the CSI report including the target CSI; The network-side device demaps the target CSI into a first CSI group; The first CSI group includes at least two duplicate or identical CSIs, and the number of CSIs in the first CSI group is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship corresponding to the target CSI.

16. The method as described in claim 15, characterized in that, The method further includes: The network-side device performs deduplication on the first CSI group to obtain the third CSI group; Wherein, the number of CSIs included in the third CSI group is less than the number of CSIs that can be jointly mapped by the predetermined mapping relationship, and all CSIs included in the third CSI group are CSIs that meet the CSI mapping requirements corresponding to the predetermined mapping relationship.

17. The method as described in claim 16, characterized in that, The network-side device performs deduplication on the first CSI group to obtain a third CSI group, including: If the CSI report also includes third information, the network-side device performs deduplication processing on the first CSI group based on the third information to obtain a third CSI group. The third information is used to indicate at least one of the following: The corresponding position of the second specific CSI in the first CSI group, wherein the second specific CSI includes CSIs that do not meet the CSI mapping requirements corresponding to the predetermined mapping relationship; The mapping order of each CSI in the first CSI group.

18. The method according to any one of claims 15-17, characterized in that, The method further includes: The network-side device sends first information to the terminal; The first information is used to indicate the target CSI processing rule when determining the first CSI group, and the target CSI processing rule includes at least one of the following: Replace the second specific CSI in the second CSI group with the first specific CSI that is located before and closest to the second specific CSI; Replace the second specific CSI in the second CSI group with the first specific CSI that is located after the second specific CSI and is closest to the second specific CSI; Replace the second specific CSI in the second CSI group with the first first specific CSI in the second CSI group; Wherein, the number of first specific CSIs included in the second CSI group is less than the number of CSIs that can be jointly mapped by the predetermined mapping relationship, the first specific CSIs include CSIs that satisfy the CSI mapping requirements corresponding to the predetermined mapping relationship, and the second specific CSIs include CSIs that do not satisfy the CSI mapping requirements corresponding to the predetermined mapping relationship.

19. The method as described in claim 18, characterized in that, The first information includes at least one of the following: The first identifier is used to identify the target CSI processing rule; The first descriptive information describes the content of the target CSI processing rule.

20. The method according to any one of claims 15-19, characterized in that, The method further includes: The network-side device sends fourth information to the terminal; The fourth information is used to indicate whether the terminal should report the third information.

21. The method according to any one of claims 15-20, characterized in that, The method further includes: The network-side device sends the second information to the terminal; The second information is used to indicate a first quantity, wherein the first quantity is the maximum number of CSIs that the terminal can report.

22. The method as described in claim 21, characterized in that, The second information is used to indicate at least one of the following: The first quantity; The target correlation quantity is used to determine the first quantity, and the target correlation quantity includes at least one of the quantity of measurement resources and the quantity of CSIs that can be jointly mapped by a predetermined mapping relationship.

23. A transmission apparatus for Channel State Information (CSI), characterized in that, include: The processing module is used to jointly map each CSI in the first CSI group to the target CSI based on a predetermined mapping relationship; The transmission module is used to send a CSI report to the network-side device, the CSI report including the target CSI; The first CSI group includes at least two duplicate or identical CSIs, and the number of CSIs in the first CSI group is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship.

24. The apparatus as claimed in claim 23, characterized in that, The processing module is further configured to: determine the first CSI group based on the second CSI group to be fed back; Wherein, the number of first specific CSIs included in the second CSI group is less than the number of CSIs that can be jointly mapped by the predetermined mapping relationship, and the first specific CSIs include CSIs that satisfy the CSI mapping requirements corresponding to the predetermined mapping relationship.

25. A transmission apparatus for Channel State Information (CSI), characterized in that, include: A transmission module is configured to receive a CSI report from a terminal, the CSI report including a target CSI; The processing module is used to demap the target CSI into a first CSI group; The first CSI group includes at least two duplicate or identical CSIs, and the number of CSIs in the first CSI group is the same as the number of CSIs that can be jointly mapped by the predetermined mapping relationship corresponding to the target CSI.

26. The apparatus as claimed in claim 25, characterized in that, The processing module is further configured to perform deduplication processing on the first CSI group to obtain a third CSI group; Wherein, the number of CSIs included in the third CSI group is less than the number of CSIs that can be jointly mapped by the predetermined mapping relationship, and all CSIs included in the third CSI group are CSIs that meet the CSI mapping requirements corresponding to the predetermined mapping relationship.

27. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the method as described in any one of claims 1 to 14.

28. A network-side device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the method as described in any one of claims 15 to 22.

29. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the method as claimed in any one of claims 1 to 14, or the steps of the method as claimed in any one of claims 15 to 22.

Images