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 a plurality of pieces of first CSI into second CSI; the terminal sends a CSI report to network side equipment; wherein the CSI report comprises the second CSI, and the plurality of first CSI are respectively corresponding to or associated with different measurement resources.

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, a terminal can measure a reference signal and feed back the measured CSI to network-side equipment, such as a base station, so that the network-side equipment can perform accurate and efficient data scheduling based on the received CSI.

[0003] However, the CSI feedback process provided in related technologies still suffers from problems such as high resource consumption. Summary of the Invention

[0004] This application provides a CSI transmission method, terminal, and network-side device that can reduce resource overhead during the CSI feedback process.

[0005] In a first aspect, a method for transmitting CSI is provided, comprising: a terminal jointly mapping multiple first CSIs to a second CSI; the terminal sending a CSI report to a network-side device; wherein the CSI report includes the second CSI, and the multiple first CSIs correspond to or are associated with different measurement resources respectively.

[0006] Secondly, a method for transmitting CSI is provided, comprising: a network-side device receiving a CSI report from a terminal, wherein the CSI report includes a second CSI; the network-side device demapping the second CSI into a plurality of first CSIs; wherein the plurality of first CSIs correspond to or are associated with different measurement resources respectively.

[0007] Thirdly, a CSI transmission device is provided, comprising: a processing module for jointly mapping multiple first CSIs to a second CSI; and a transmission module for sending a CSI report to a network-side device; wherein the CSI report includes the second CSI, and the multiple first CSIs correspond to or are associated with different measurement resources.

[0008] Fourthly, a CSI transmission device is provided, comprising: a transmission module for receiving a CSI report from a terminal, wherein the CSI report includes a second CSI; and a processing module for demapping the second CSI into a plurality of first CSIs, wherein the plurality of first CSIs correspond to or are associated with different measurement resources.

[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 used to jointly map multiple first CSIs to a second CSI; the communication interface is used to send a CSI report to a network-side device; wherein the CSI report includes the second CSI, and the multiple first CSIs correspond to or are associated with different measurement resources respectively.

[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, wherein the CSI report includes a second CSI; the processor is configured to demap the second CSI into a plurality of first CSIs; wherein the plurality of first CSIs respectively correspond to or are associated with different measurement resources.

[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, the terminal can effectively reduce the resource overhead of CSI reporting by jointly mapping multiple first CSIs associated with or corresponding to different measurement resources. 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 3a This is one of the interactive flow diagrams of the CSI transmission method provided in an exemplary embodiment of this application.

[0022] Figure 3b This is the second schematic diagram of the interaction flow of the CSI transmission method provided in an exemplary embodiment of this application.

[0023] Figure 4 This is a second schematic flowchart of a CSI transmission method provided in an exemplary embodiment of this application.

[0024] Figure 5 This is one of the structural schematic diagrams of a CSI device provided in an exemplary embodiment of this application.

[0025] Figure 6 This is a second schematic diagram of the structure of the CSI device provided in an exemplary embodiment of this application.

[0026] Figure 7 This is a schematic diagram of the structure of a communication device provided in an exemplary embodiment of this application.

[0027] Figure 8 This is a schematic diagram of the structure of a terminal provided in an exemplary embodiment of this application.

[0028] 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

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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).

[0036] Furthermore, for ease of understanding, the relevant technical features involved in this application are described herein.

[0037] 1. CSI Compressed Feedback Technology

[0038] 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.

[0039] 1) Type I codebook

[0040] 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.

[0041] 2) Type 2 codebook

[0042] 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).

[0043] 3) e type 2 codebook

[0044] 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.

[0045] (2) Artificial Intelligence (AI) Unit

[0046] 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.

[0047] Considering the characteristics of the two-end models mentioned above, the following training collaboration types have been basically determined.

[0048] 1) Joint training at a single entity (or type 1)

[0049] 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.

[0050] 2) Joint training at multiple entities (or type 2)

[0051] 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.

[0052] 3) Separate training (or type 3) on multiple nodes

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] The technical solutions provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0058] 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.

[0059] S210, the terminal jointly maps multiple first CSIs to a second CSI.

[0060] S220, the terminal sends a CSI report to the network-side device, the CSI report including the second CSI.

[0061] The plurality of first CSIs correspond to or are associated with different measurement resources. Optionally, the measurement resources may be, but are not limited to, reference signals such as CSI Reference Signal (CSI-RS) and Positioning Reference Signal (PRS).

[0062] The joint mapping can be understood as joint encoding or joint compression, etc. That is, in this embodiment, multiple first CSIs corresponding to or associated with different measurement resources can be jointly compressed or encoded to obtain better CSI compression or encoding performance and reduce resource overhead during CSI transmission.

[0063] In one embodiment, the measurement resources may be associated with, but are not limited to, at least one of the following: measurement beam, measurement frequency, transmission mode, subband, antenna port, and time slot. Considering the correlation between CSIs measured under different measurement beams, measurement frequencies, transmission modes, subbands, antenna ports, and time slots, this embodiment utilizes the correlation between CSIs during joint CSI mapping. This effectively improves the performance of joint CSI mapping and reduces the resource overhead during CSI transmission. The "correlation" can be understood as the existence of identical or similar characteristics among multiple CSIs measured under different measurement resources. For example, when the measurement resource is a measurement beam, the basis vectors corresponding to CSIs measured under adjacent measurement beams may have significant overlap.

[0064] The transmission method may include, but is not limited to, single TRP transmission method and multi-TRP transmission method. The single TRP transmission method can also be understood as centralized MIMO, and the multi-TRP transmission method can also be understood as distributed MIMO.

[0065] In the context of associating measurement resources with sub-bands and antenna ports, the joint mapping provided in this embodiment can be understood as a joint mapping oriented towards the spatial frequency domain.

[0066] When the measurement resources are associated with sub-bands, antenna ports, and time slots, the joint mapping provided in this embodiment can be understood as a joint mapping oriented towards the space-time-frequency domain.

[0067] When the measurement resources are associated with the measurement beams, the joint mapping provided in this embodiment can be understood as a frequency domain-oriented joint mapping, and the CSI reporting is a CSI joint mapping under multiple beams.

[0068] In this embodiment, the more domains involved in the joint mapping, the better the performance of the joint mapping, such as reducing more mapping overhead.

[0069] Optionally, the first 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.

[0070] In this embodiment, the terminal can effectively reduce the resource overhead of CSI reporting by jointly mapping multiple first CSIs associated with or corresponding to different measurement resources.

[0071] In one embodiment, when the terminal described in S210 jointly maps multiple first CSIs to a second CSI, the performance of the joint mapping is related to the mapping order (or arrangement order, input order, etc.) of the multiple first CSIs. For example, taking measurement resource associated measurement beams as an example, although there is a certain correlation between the CSIs corresponding to each beam, the correlation between CSIs under different beam orders is not the same, which leads to the characteristic patterns between jointly mapped CSIs changing with the beam order. For example, suppose the CSIs measured by beam0, beam1, and beam2 are arranged in descending order of Reference Signal Received Power (RSRP), where a higher RSRP indicates lower noise content and higher useful information in the CSI. Then, if the CSIs arranged in descending order of RSRP are jointly mapped, one possible characteristic pattern between the CSIs is that the useful information of the first CSI is greater than that of the second CSI, and the useful information of the second CSI is greater than that of the third CSI. However, once CSIs are arranged from low to high according to RSRP, the specific patterns between CSIs in the joint mapping become such that the useful information of the first CSI is less than that of the second CSI, and the useful information of the second CSI is less than that of the third CSI. That is, different joint mapping orders result in different feature patterns between CSIs, which in turn affects the performance of joint mapping.

[0072] In this case, when performing joint mapping based on a predetermined mapping relationship, since the CSI mapping order supported by the predetermined mapping relationship is pre-configured or trained, the joint mapping performance will be affected if the CSI mapping order is different from the CSI mapping order supported by the predetermined mapping relationship.

[0073] For example, when the predetermined mapping relationship is implemented based on AI units, the training dataset used for training the AI ​​units may not include all CSIs corresponding to beam combinations. Therefore, the trained AI units may not be able to adapt to CSI combinations in any order. Thus, during joint mapping, the mapping order of the CSIs input to the AI ​​units needs to be aligned to ensure the inference performance of the AI ​​units, i.e., the joint mapping performance of the AI ​​units. For instance, during the AI ​​unit training phase, CSIs may be arranged in descending order of beam RSRP, with higher RSRP beams appearing earlier. If, during joint mapping using the trained AI units, the CSIs are not arranged in descending order of beam RSRP, the joint mapping performance of the AI ​​units will be affected.

[0074] Therefore, in this embodiment, multiple CSIs can be jointly mapped according to the CSI mapping order supported by the predetermined mapping relationship to ensure performance when jointly mapping based on the predetermined mapping relationship. Based on this, in one embodiment, the process of the terminal jointly mapping multiple first CSIs to a second CSI in S210 may include, but is not limited to: the terminal determining the mapping order of the multiple first CSIs, and then jointly mapping the multiple first CSIs to the second CSI according to the mapping order of the multiple first CSIs and based on the predetermined mapping relationship. Wherein, the mapping order of the multiple first CSIs is the same as the CSI mapping order supported by the predetermined mapping relationship. Thus, by ensuring that the mapping order of the multiple first CSIs is the same as the CSI mapping order supported by the predetermined mapping relationship, CSI mapping performance is effectively ensured.

[0075] For example, if during the configuration phase of the predetermined mapping relationship, the CSI mapping order supported by the predetermined mapping relationship is arranged in the order of beam0, beam2, and beam1, i.e., CSI 0, CSI 2, and CSI 1, then after the terminal measures and obtains the three first CSIs corresponding to beam0, beam1, and beam2, it can sort the three first CSIs in the order of beam0, beam2, and beam1 to obtain multiple mapping orders of first CSIs: CSI 0, CSI 2, and CSI 1.

[0076] Corresponding to the aforementioned joint mapping, the predetermined mapping relationship can be understood as a compressor capable of performing joint compression of multiple first CSIs, or an encoder capable of performing joint encoding of CSIs, etc. Based on this, the mapping order can also be understood as the input order of the compressor or encoder, which is not limited here.

[0077] It should be noted that, for the aforementioned scenario where the predetermined mapping relationship is implemented based on an AI unit, although it is possible to consider having the AI ​​unit learn different CSI mapping orders during the training phase (e.g., through certain data augmentation techniques) to enable the AI ​​unit to handle multiple CSI mapping orders, thereby avoiding the step of determining the CSI mapping order before joint training at the terminal, the learning capacity of the AI ​​unit is limited. If the AI ​​unit learns too many CSI mapping orders at the same time, it will reduce the performance of the AI ​​unit's joint mapping. Therefore, this embodiment proposes a trade-off between the scalability of the CSI mapping order and the performance effect of joint mapping. That is, the AI ​​unit is trained to support some CSI mapping orders, and when the terminal performs joint mapping based on the AI ​​unit, the mapping order of the multiple CSIs to be fed back is determined by the CSI mapping order to ensure that the mapping order is the same as the CSI mapping order supported by the AI ​​unit, thereby ensuring the performance of joint mapping.

[0078] In one embodiment, the AI ​​unit may include, but is not limited to, one or more of the following: the AI ​​unit used by the terminal, a reference AI unit of the AI ​​unit used by the terminal, the AI ​​unit used by the terminal in testing, and a reference AI unit of the AI ​​unit used by the terminal in testing.

[0079] In some embodiments, the terminal may determine the mapping order of the plurality of first CSIs in various ways. For example, it may determine the mapping order or rules indicated by the network-side device, or it may determine the mapping order itself.

[0080] For example, in the case indicated by a network-side device, the network-side device may send target configuration information to the terminal to indicate the mapping order of at least a portion of the plurality of first CSIs. Correspondingly, the terminal receives the target configuration information from the network-side device and determines the mapping order of the plurality of first CSIs based on the target configuration information.

[0081] In some embodiments, the target configuration information may include, but is not limited to, at least one of 11)-15).

[0082] 11) First indication information, used to indicate the mapping order of at least a portion of the plurality of first CSIs.

[0083] That is, the network-side device can directly indicate to the terminal the mapping order of at least a portion of the multiple first CSIs, so that the terminal performs joint mapping of the multiple first CSIs based on the indicated mapping order of at least a portion of the multiple first CSIs.

[0084] If the first indication information only indicates the mapping order of some of the plurality of first CSIs, then the mapping order of the unindicated first CSIs can be determined by the terminal, and the terminal can report the determined result to the network-side device so that the network-side device and the terminal have a consistent understanding of the mapping order of the plurality of first CSIs.

[0085] For example, assuming the measurement resource is CSI-RS, and multiple first CSIs are CSI 1, CSI 2, CSI 3, and CSI 4 respectively, corresponding to CSI-RS1, CSI-RS2, CSI-RS3, and CSI-RS4, and the network-side device only indicates the mapping order of CSI 1, CSI 2, and CSI 3 through the first indication information, such as CSI 2, CSI 3, and CSI 1, then if the terminal autonomously determines the mapping order of CSI 4, such as CSI 2, CSI 3, CSI 4, and CSI 1, then after the terminal performs joint mapping based on the mapping order "CSI 2, CSI 3, CSI 4, and CSI 1", it can report the mapping order of CSI 4 to the network-side device, such as [CSI-RS2, CSI-RS 3, CSI-RS 4, CSI-RS 4, CSI-RS 4, CSI-RS 5, CSI-RS 6, CSI-RS 7, CSI-RS 8, CSI-RS 9, CSI-RS 1, CSI-RS 1, CSI-RS 1, CSI-RS 2, CSI-RS 3, CSI-RS 4, CSI-RS 9, CSI-RS 1, CSI-RS 1, CSI-RS 2, CSI-RS 3, CSI-RS 4 ... 4. CSI-RS1], thereby enabling the network-side device and the terminal to have a consistent understanding of the mapping order of the first CSI, and thus enabling the network-side device to determine which measurement resource, such as which CSI-RS, corresponds to the CSI reported by the terminal.

[0086] 12) Second indication information, used to indicate the demapping order of at least a portion of the plurality of first CSIs.

[0087] In contrast to the mapping order indicated in the first indication information when CSI joint mapping is performed, the second indication information indirectly indicates the mapping order when CSI joint mapping is performed by indicating the demapping order of at least a portion of the plurality of first CSIs.

[0088] In one embodiment, the terminal determines that the mapping order of the plurality of first CSIs is the same as or consistent with the demapping order of at least a portion of the plurality of first CSIs.

[0089] For example, assuming that the multiple first CSIs are CSI1, CSI2, CSI3, and CSI4 corresponding to CSI-RS1, CSI-RS2, CSI-RS3, and CSI-RS4 respectively, then the network-side device indicates the demapping order of the multiple first CSIs through the second indication information, such as CSI1, CSI2, CSI4, and CSI3. Then, the terminal can determine that the CSI mapping order of the multiple first CSIs is CSI1, CSI2, CSI4, and CSI3.

[0090] Furthermore, similar to the aforementioned first indication information, if the second indication information indicates the demapping order of some of the plurality of first CSIs, then the CSI mapping order of the unindicated parts can be determined by the terminal and reported to the network-side device, thereby making the network-side device and the terminal consistent in their understanding of the mapping order of the first CSIs, and thus enabling the network-side device to determine which measurement resource, such as which CSI-RS, the CSI reported by the terminal corresponds to.

[0091] 13) Third indication information, used to indicate at least one measurement resource group, wherein the mapping order of the first CSI corresponds to or is associated with the order of measurement resources in the measurement resource group.

[0092] In this case, the terminal can select a target measurement resource group from at least one measurement resource group, and determine that the mapping order of the plurality of first CSIs is the same as the order of the measurement resources in the target measurement resource group.

[0093] For example, assuming the measurement resource is CSI-RS, and the network-side device indicates three measurement resource groups through third indication information, such as reference signal combination 1 [CSI-RS1, CSI-RS2, CSI-RS3], reference signal combination 2 [CSI-RS3, CSI-RS5, CSI-RS7], and reference signal combination 3 [CSI-RS1, CSI-RS4, CSI-RS6], then the terminal can select reference signal combination 3 as the target measurement resource group, and determine the mapping order of CSIs according to the order of each CSI-RS in reference signal combination 3 [CSI-RS1, CSI-RS4, CSI-RS6], that is, CSI 1 corresponding to CSI-RS1, CSI 4 corresponding to CSI-RS4, and CSI 6 corresponding to CSI-RS6.

[0094] For example, suppose the network-side device is configured with a total of 4 reference signals CSI-RS1, CSI-RS2, CSI-RS3, and CSI-RS4, and indicates reference signal combination 1 [CSI-RS1, CSI-RS2, *], reference signal combination 2 [CSI-RS2, CSI-RS4, *], and reference signal combination 3 [CSI-RS3, CSI-RS1, *], where * represents that the specific CSI-RS is not limited. The terminal will select reference signal combination 2 [CSI-RS2, CSI-RS4, *] as the target measurement resource group from the above reference signal combinations. Then, the terminal can select one of the remaining CSI-RS to fill the * position. Finally, the mapping order of CSI is determined based on the order of each CSI-RS in the filled target measurement resource group. For example, when the filled target measurement resource group is [CSI-RS2, CSI-RS4, CSI-RS1], the mapping order of CSI is CSI 2 corresponding to CSI-RS2, CSI 4 corresponding to CSI-RS4, and CSI 1 corresponding to CSI-RS1.

[0095] In one embodiment, after the terminal completes the joint CSI mapping based on the aforementioned CSI mapping order, it can report the CSI mapping order to the network-side device, thereby making the network-side device and the terminal consistent in their understanding of the mapping order of the first CSI, and thus enabling the network-side device to determine which measurement resource, such as which CSI-RS, the CSI reported by the terminal corresponds to.

[0096] 14) Fourth indication information, used to indicate target rules, which describe how the mapping order of at least a portion of the plurality of first CSIs is determined. That is, the terminal can indicate the target rules for determining the CSI mapping order, so that the terminal can determine the CSI mapping order itself according to the target rules.

[0097] In one embodiment, there may be multiple target rules. For example, the target rules may include at least one of the following rules 1-3.

[0098] Rule 1: The mapping order of the first CSI is determined according to the size of the RSRP corresponding to the measurement resource. For example, the higher the RSRP, the earlier the mapping order of the first CSI is.

[0099] For example, assuming the measurement resource is CSI-RS and rule 1 stipulates that the first CSI is sorted in descending order of the RSRP of the beam corresponding to CSI-RS, i.e., the mapping order, then if the order of beam RSRP of CSI-RS1, CSI-RS2, and CSI-RS3 is CSI-RS2>CSI-RS3>CSI-RS1, and the terminal selects CSI-RS2 and CSI-RS3 as the first CSI for joint mapping, then the mapping order is CSI 2 corresponding to CSI-RS2 and CSI 3 corresponding to CSI-RS3.

[0100] Rule 2: The mapping order of the first CSI is determined according to the configuration or indication order of the measurement resources. For example, the earlier the configuration or indication order of the measurement resources, the earlier the mapping order of the corresponding first CSI.

[0101] For example, assuming the measurement resource is CSI-RS, rule 2 stipulates that the first CSI is sorted according to the configuration order or indication order of CSI-RS, i.e., the mapping order. Then, if the configuration order or indication order of CSI-RS is CSI-RS1, CSI-RS2, CSI-RS3, and the terminal selects CSI-RS2 and CSI-RS3 as the first CSI for joint mapping, then its mapping order is the same as CSI-RS2, CSI-RS3, i.e., CSI2 corresponding to CSI-RS2 and CSI3 corresponding to CSI-RS3.

[0102] Rule 3: Determine the mapping order of the first CSI based on whether it is a mandatory CSI. For example, mandatory first CSIs are placed before optional first CSIs.

[0103] For example, assuming the measurement resource is CSI-RS and rule 3 stipulates that the first CSI that must be reported is placed before the first CSI that can be reported optionally, i.e., the mapping order, then if the CSIs corresponding to CSI-RS1 and CSI-RS3 are mandatory to be reported, while CSI-RS2 is optional to be reported, and the terminal selects CSI-RS2 and CSI-RS3 as the first CSI for joint mapping, then its mapping order is the same as that of CSI-RS2 and CSI-RS3, i.e., CSI3 corresponding to CSI-RS3 and CSI2 corresponding to CSI-RS2.

[0104] In one embodiment, there can be multiple ways to indicate the target rule through the fourth indication information. For example, the fourth indication information may include, but is not limited to, at least one of a first identifier and a first description. The first identifier is used to identify the target rule. For example, assuming that multiple CSI mapping order determination rules are configured in the network-side device and the terminal through a protocol agreement, such as the aforementioned rules 1-3, then the network-side device can select one as the target rule and indicate it to the terminal.

[0105] The first descriptive information is used to describe the content of the target rule, such as at least one of the aforementioned rules 1-3.

[0106] In one embodiment, after the terminal determines the mapping order of the first CSI based on the aforementioned target rules and completes the joint mapping of CSIs, it can report the CSI mapping order to the network-side device, thereby making the network-side device and the terminal have the same understanding of the mapping order of the first CSIs, and thus enabling the network-side device to determine which measurement resource, such as which CSI-RS, the CSI reported by the terminal corresponds to.

[0107] 15) Fifth indication information, used to indicate the order of multiple measurement resources, wherein the mapping order of the first CSI corresponds to or is associated with the order of the measurement resources.

[0108] In one embodiment, if the target configuration information includes the fifth indication information, then the terminal can determine that the mapping order in the plurality of first CSIs is the same as the order of the plurality of measurement resources.

[0109] For example, assuming that the order of measurement resources indicated by the network-side device through the fifth indication information is: CSI-RS1, CSI-RS2, CSI-RS3, then if the terminal selects the CSI corresponding to CSI-RS1 and the CSI corresponding to CSI-RS3 as the first CSI for joint mapping, then the mapping order of the first CSI is consistent with the order of CSI-RS1 and CSI-RS3, that is, CSI 1 and CSI 3.

[0110] In one embodiment, after the terminal determines the mapping order of the first CSI based on the aforementioned fifth indication information and completes the joint mapping of CSIs, it can report the CSI mapping order to the network-side device, thereby making the network-side device and the terminal have the same understanding of the mapping order of the first CSIs, and thus enabling the network-side device to determine which measurement resource, such as which CSI-RS, the CSI reported by the terminal corresponds to.

[0111] Regarding the aforementioned target configuration information, the network-side device may use one of the aforementioned indication information to indicate the mapping order of all CSIs among the multiple first CSIs, or it may use two or more of the aforementioned indication information to jointly indicate the mapping order of all CSIs among the multiple first CSIs.

[0112] For example, for the latter, the network-side device may indicate the mapping order of a portion of the first CSI through the first indication information, and then indicate the mapping order of another portion of the first CSI through the second indication information, or it may indicate the mapping order of a portion of the first CSI through the first indication information, and then indicate the mapping order of another portion of the first CSI through the fourth indication information, etc., without any limitation.

[0113] In one embodiment, the mapping order of multiple first CSIs is indicated or configured by the network-side device, and the terminal determines the mapping order of the first CSIs according to the indication or configuration of the network-side device. Thus, the resource overhead problem caused by the terminal reporting the mapping of the first CSIs to the network side can be avoided, while ensuring that the network-side device and the terminal have a consistent understanding of the mapping order of CSIs during joint mapping.

[0114] Furthermore, besides the aforementioned indication or configuration of at least a portion of the mapping order among the multiple first CSIs by the network-side device, in this embodiment, the network-side device may also choose not to indicate or configure the mapping order among the multiple first CSIs, meaning the terminal can independently determine the mapping order among the multiple first CSIs. In this case, the terminal needs to indicate the mapping order among the multiple first CSIs to the network-side device when transmitting CSI reports, so that the network-side device and the terminal have a consistent understanding of the mapping order of the first CSIs, thereby enabling the network-side device to determine which measurement resource, such as which CSI-RS, corresponds to each CSI reported by the terminal.

[0115] In one embodiment, in addition to sending target configuration information to the terminal, the network-side device can also send other configuration information for CSI joint mapping to the terminal, such as configuring or instructing whether the terminal performs CSI joint mapping, the AI ​​unit used by the terminal when performing CSI joint mapping, the uplink resources when the terminal reports the CSI joint mapping result, the number of CSIs when the terminal performs CSI joint mapping, etc. This embodiment does not impose any limitations.

[0116] In one embodiment, when the aforementioned terminal jointly maps the plurality of first CSIs to the second CSI based on a predetermined mapping relationship, the plurality of first CSIs also satisfy the CSI mapping requirements corresponding to the predetermined mapping relationship. This further improves the joint mapping performance. The "CSI mapping requirements" may include, but are not limited to: requiring that the Reference Signal Received Power (RSRP) corresponding to the CSI jointly mapped using the predetermined mapping relationship is higher than a first threshold, and that the characteristic value corresponding to the CSI is higher than a second threshold, etc., wherein the first threshold and the second threshold can be configured by protocol agreement or other means.

[0117] 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.

[0118] In one embodiment, the terminal may also report terminal capability information to the network-side device to indicate whether the terminal has the capability for multiple CSI joint mapping. Correspondingly, after receiving the terminal capability information, the network-side device sends relevant configuration information for CSI joint mapping to the terminal based on the terminal capability information, such as the target configuration information. For example, if the terminal has the capability for multiple CSI joint mapping, the target configuration information is sent to the terminal; otherwise, it is not sent. This ensures that the target configuration information sent by the network side to the terminal matches the terminal's capabilities.

[0119] In one embodiment, for a network-side device, after the terminal sends a CSI report to the network-side device, if the network-side device receives the CSI report from the terminal, it can demap the second CSI in the CSI report into multiple first CSIs, thereby completing the transmission of the first CSIs.

[0120] Optionally, the network-side device can demap the second CSI into multiple first CSIs based on a predetermined demapping relationship. Here, corresponding to the predetermined demapping relationship mentioned above, the predetermined demapping relationship can be understood as a decompressor or decoder, etc., and it can be implemented based on an AI unit, without limitation.

[0121] For example, in this embodiment, when the predetermined demapping relationship is implemented based on an AI unit, the AI ​​unit may include, but is not limited to, one or more of the following: the AI ​​unit used by the network-side device, a reference AI unit of the AI ​​unit used by the network-side device, the AI ​​unit used by the network-side device in testing, and a reference AI unit of the AI ​​unit used by the network-side device in testing.

[0122] In one embodiment, the terminal may indicate the mapping order of at least a portion of the multiple first CSIs in the CSI report; that is, the CSI report may carry sixth indication information to indicate the mapping order of at least a portion of the multiple first CSIs. Correspondingly, after demapping the multiple first CSIs, the network-side device may determine whether the order of the demapping multiple first CSIs is the same as the mapping order indicated by the sixth indication information. If they are the same, it is determined that the CSI transmission is correct, and subsequent data scheduling is performed based on the demapping multiple first CSIs.

[0123] In one embodiment, the sixth indication information may be a newly introduced feature of this application, specifically used to indicate the mapping order of at least a portion of the plurality of first CSIs, or existing indication information may be reused.

[0124] In one embodiment, for the reuse of existing indication information, considering that the terminal can indicate the order of a set of CSIs when reporting multi-beam CSIs, this order is used to indicate the order of Channel Quality Indicators (CQIs) in CSI reporting part 2. Therefore, in this embodiment, this order can be reused to simultaneously indicate the mapping order of at least a portion of the plurality of first CSIs, that is, reporting a set of CSIs simultaneously relates to both CQI and CSI mapping order. In other words, the sixth indication information can also be used to indicate the order of other objects besides the mapping order of at least a portion of the plurality of first CSIs, including CQIs.

[0125] Alternatively, in cases where existing indication information is reused, assuming that the sixth indication information can reuse the associated quantity of the measurement resource associated with or corresponding to CSI for indication, then when the measurement resource is CSI-RS, the sixth indication information can reuse the associated quantity CRI of CSI-RS, that is, the mapping order of the multiple first CSIs can be indicated by the order of CSI-RS indicated by CRI.

[0126] For example, assuming the mapping order of multiple first CSIs is [CSI 1, CSI 4, CSI 2, CSI 3], then the sixth indication information can be [CSI-RS1, CSI-RS 4, CSI-RS2, CSI-RS 3]. Correspondingly, after receiving the sixth indication information, the network-side device can determine that the mapping order of the multiple first CSIs is 1, 4, 2, 3, and they correspond sequentially to CSI-RS1, CSI-RS 4, CSI-RS2, and CSI-RS 3, respectively.

[0127] It is worth noting that, in the case where the sixth indication information indicates the mapping order of at least a portion of the plurality of first CSIs, it can be understood that if the network-side device only configures the mapping order of a portion of the plurality of first CSIs, then the sixth indication information can indicate the mapping order of all first CSIs, or it can only indicate the order of a portion of the CSIs determined autonomously by the terminal.

[0128] For example, suppose the network-side device indicates a reference signal combination [CSI-RS1, CSI-RS2, *], and the terminal determines the mapping order of the first CSI based on the reference signal combination [CSI-RS1, CSI-RS2, *] as [CSI 1, CSI 2, CSI 4], where the order of CSI 1 and CSI 2 is determined based on CSI-RS1 and CSI-RS2, while CSI 4 is determined autonomously by the terminal. In this case, the terminal can indicate the mapping order of multiple first CSIs through the sixth indication information, that is, the terminal reports the complete mapping order: [CSI-RS1, CSI-RS2, CSI-RS 4]; or, it can also indicate only the mapping order of CSI 4 through the sixth indication information, that is, the terminal only reports the mapping order of CSIs not configured by the network-side device: [CSI-RS 4].

[0129] Based on the aforementioned description of the CSI transmission scheme, in order to better understand its implementation process, the following will provide an exemplary introduction to its implementation process with examples.

[0130] Example 1

[0131] Assuming the network-side device fully configures the mapping order when the terminal performs multi-CSI joint mapping, then, as Figure 3a As shown, the CSI transmission process is as follows.

[0132] S311, Data Collection.

[0133] 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.

[0134] 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.

[0135] Optionally, the terminal may report the collected data via air interface or Radio Resource Control (RRC) signaling.

[0136] S312, Terminal capability information reporting.

[0137] The terminal can send terminal capability information to the network-side device during the capability reporting phase to indicate to the network-side device whether the terminal has the capability of CSI joint mapping.

[0138] Optionally, if the terminal has the capability of CSI joint mapping, and the predetermined mapping relationship used by the terminal when performing CSI joint mapping is implemented based on AI units, then the terminal capability information can also be used to indicate the AI ​​units supported by the terminal, whether the terminal supports specific model structures, and other capabilities. The specific model structure may include, but is not limited to, one or more of fully connected models, convolutional network models, etc.

[0139] S313, Determination of the predetermined mapping relationship and the predetermined demapping relationship.

[0140] 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. For example, it can train 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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).

[0145] Optionally, during the training phase, the network-side device and the terminal-side device can prepare multiple available models, each corresponding to a different application scope. For example, Model 1 can jointly map 2 CSIs, Model 2 can jointly map 4 CSIs, and so on.

[0146] S314, configuration information related to CSI joint mapping sent by the network-side device to the terminal.

[0147] The relevant configuration information for the CSI joint mapping includes, but is not limited to, at least one of the following 21)-24).

[0148] 21) Target configuration information for indicating the mapping order in the plurality of first CSIs.

[0149] Optionally, the target configuration information includes at least one of the following: first instruction information, second instruction information, third instruction information, fourth instruction information, and fifth instruction information.

[0150] It is understood that the relevant description of the target configuration information can be referred to the relevant description in the aforementioned method embodiment 200, and will not be repeated here.

[0151] 22) The seventh instruction information is used to instruct the terminals to jointly report CSI.

[0152] Optionally, the seventh indication information may be indicated in the following ways: by indicating measurement resources associated with or corresponding to CSI, such as CSI-RS, to implicitly indicate that terminals jointly report CSI.

[0153] 23) Target identifier, used to identify the AI ​​unit (also called AI model) used in joint mapping, that is, the predetermined mapping relationship in joint mapping is implemented based on the AI ​​unit.

[0154] The target identifier includes at least one of a model ID, a dataset ID, and a pairing ID. The dataset ID is used for the target dataset, which is used for training the AI ​​unit. The pairing ID identifies the target model pair, which includes the AI ​​unit used by the terminal for joint mapping and the AI ​​unit used by the network-side device for demapping.

[0155] 24) The target uplink resource used for CSI joint reporting is used by the terminal to report the jointly mapped CSI based on the uplink resource.

[0156] S315, the terminal obtains multiple first CSIs to be fed back by measuring the reference signal.

[0157] S316, the terminal determines the mapping order of multiple first CSIs according to the target configuration information in S314, and maps multiple first CSIs together as second CSIs according to the predetermined mapping relationship and the mapping order of the multiple first CSIs.

[0158] S317, the terminal sends a CSI report to the network-side device based on the target uplink resources configured in S314, the CSI report including the second CSI.

[0159] Optionally, if the network-side device indicates multiple CSI mapping order determination methods for the terminal to choose from through the target configuration information in S314, or if the network-side device indicates target rules for the terminal to determine the mapping order of the first CSI through the fourth indication information in the target configuration information, then the CSI report may also include a sixth indication information to indicate the mapping order of multiple first CSIs during joint mapping to the network-side device. That is, while the terminal reports the second CSI after joint mapping, it also needs to report the mapping order of the first CSIs determined by the terminal, so that the network-side device and the terminal have a consistent understanding of the mapping order of the first CSIs, thereby enabling the network-side device to determine which measurement resource, such as which CSI-RS, the CSI reported by the terminal corresponds to.

[0160] For example, suppose the network-side device indicates the order of measurement resources, such as CSI-RS1, CSI-RS2, and CSI-RS3, through the fifth indication information in the target configuration information in S314, and the terminal selects two reference signals, CSI-RS1 and CSI-RS3, meaning the terminal performs CSI joint mapping in the same order as CSI-RS1 and CSI-RS3. Then, while reporting the joint mapping result of CSI1 and CSI3 (i.e., the second CSI), the terminal also needs to report the sixth indication information to indicate the mapping order of CSI1 and CSI3, such as the sorting information of [CSI1, CSI3], so that the network-side device knows the specific content of the recovered CSI, such as which CSI-RS the recovered CSI corresponds to. For example, if the sixth indication information is the sorting information of [CSI1, CSI3], and the network-side device demaps to obtain CSI1 CSI3, then the network-side device determines that CSI1 corresponds to CSI-RS1 and CSI3 corresponds to CSI-RS3.

[0161] Generally speaking, the sixth instruction information can be carried in CSI reporting part 1.

[0162] Optionally, the sixth indication information may be newly introduced in this application and specifically used to indicate the mapping order among the plurality of first CSIs, or it may reuse existing indication information, that is, the mapping order among the plurality of first CSIs may be indicated together with or jointly with other information. For example, the sixth indication information may also be used to indicate the order of other objects besides at least a portion of the mapping order among the plurality of first CSIs, the other objects including CQI.

[0163] S318 After receiving the CSI report, the network-side device separates the encoder output, i.e. the second CSI, from the CSI report, and then demaps the second CSI to obtain multiple first CSIs.

[0164] Optionally, the network-side device can determine which measurement resource each of the multiple first CSIs obtained by demapping corresponds to based on the target configuration information in S314 and / or the sixth indication information carried in the CSI report, for use in subsequent data scheduling, etc.

[0165] It is understood that this Example 1 may include more or fewer steps than those described above, and no limitation is made here. In addition, the implementation process of each step in this Example 1 can also refer to the relevant description in the aforementioned method embodiment 200, and will not be repeated here.

[0166] Example 2

[0167] Compared to Example 1, Example 2 assumes that the mapping order of some of the first CSIs during joint mapping is configured by the network-side device, and the terminal determines the mapping order of the remaining CSIs (in an extreme case, the network only configures the number of CSIs for joint mapping, and the input order is completely determined by the UE) before reporting. For example Figure 3b As shown, its implementation process may include, but is not limited to, the following steps.

[0168] S321-S323 are the same as in Example 1, and will not be repeated here.

[0169] S324, configuration information related to CSI joint mapping sent by the network-side device to the terminal.

[0170] The relevant configuration information for the CSI joint mapping includes, but is not limited to, at least one of the following.

[0171] 31) Target configuration information for indicating the mapping order of portions of the plurality of first CSIs.

[0172] Optionally, the target configuration information includes at least one of the following: first instruction information, second instruction information, third instruction information, fourth instruction information, and fifth instruction information.

[0173] It is understood that the relevant description of the target configuration information can be referred to the relevant description in the aforementioned method embodiment 200, and will not be repeated here.

[0174] 32) The seventh instruction information is used to instruct the terminals to jointly report CSI.

[0175] Optionally, the seventh indication information may be indicated in the following ways: by indicating measurement resources associated with or corresponding to CSI, such as CSI-RS, to implicitly indicate that terminals jointly report CSI.

[0176] 33) Target identifier, used to identify the AI ​​unit (also called AI model) used when performing joint mapping, that is, the predetermined mapping relationship during joint mapping is implemented based on the AI ​​unit.

[0177] The target identifier includes at least one of a model ID, a dataset ID, and a pairing ID. The dataset ID is used for the target dataset, which is used for training the AI ​​unit. The pairing ID identifies the target model pair, which includes the AI ​​unit used by the terminal for joint mapping and the AI ​​unit used by the network-side device for demapping.

[0178] 34) The target uplink resource used for CSI joint reporting is used by the terminal to report the jointly mapped CSI based on the uplink resource.

[0179] S325, the terminal obtains multiple first CSIs to be fed back by measuring the reference signal.

[0180] S326, the terminal determines the mapping order of multiple first CSIs according to the target configuration information in S324, and maps multiple first CSIs together as second CSIs according to the predetermined mapping relationship and the mapping order of the multiple first CSIs.

[0181] S327, the terminal sends a CSI report to the network-side device based on the target uplink resources configured in S324, the CSI report including the second CSI and the sixth indication information.

[0182] Since the network-side device in S324 only indicates the mapping order of part of the first CSI, the terminal needs to carry the mapping order of the remaining first CSI when reporting the CSI report, that is, the sixth indication information.

[0183] For example, suppose the network-side device indicates a reference signal combination [CSI-RS1, CSI-RS2, *], and the terminal determines the mapping order of the first CSI based on the reference signal combination [CSI-RS1, CSI-RS2, *] as [CSI 1, CSI 2, CSI 4]. The order of CSI 1 and CSI 2 is determined based on CSI-RS1 and CSI-RS2, while CSI 4 is determined autonomously by the terminal. Therefore, the terminal needs to indicate the mapping order of CSI 4 in CSI reporting part 1, which is the sixth indication information.

[0184] Optionally, the sixth indication information can be the mapping order of multiple first CSIs, that is, the terminal still reports the complete mapping order, namely [CSI-RS1, CSI-RS2, CSI-RS4].

[0185] Alternatively, the sixth indication information can also be the mapping order of CSI4, that is, the terminal only reports the mapping order of CSI that has not been configured by the network-side device, i.e., [CSI-RS 4].

[0186] Optionally, the sixth indication information may be newly introduced in this application and specifically used to indicate the mapping order among the plurality of first CSIs, or it may reuse existing indication information, that is, the mapping order among the plurality of first CSIs may be indicated together with or jointly with other information. For example, the sixth indication information may also be used to indicate the order of other objects besides at least a portion of the mapping order among the plurality of first CSIs, the other objects including CQI.

[0187] S328, after receiving the CSI report, the network-side device separates the encoder output, i.e. the second CSI, from the CSI report, and then demaps the second CSI to obtain multiple first CSIs.

[0188] Optionally, the network-side device can determine which measurement resource each of the multiple first CSIs obtained by demapping corresponds to based on the target configuration information in S324 and / or the sixth indication information carried in the CSI report, for use in subsequent data scheduling, etc.

[0189] It is understood that this Example 2 may include more or fewer steps than those described above, and no limitation is made here. In addition, the implementation process of each step in this Example 2 can also refer to the relevant description in the aforementioned Method Embodiment 200, and will not be repeated here.

[0190] 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.

[0191] S410, the network-side device receives a CSI report from the terminal, wherein the CSI report includes a second CSI.

[0192] S420, the network-side device demaps the second CSI into multiple first CSIs.

[0193] The plurality of first CSIs correspond to or are associated with different measurement resources.

[0194] In one embodiment, where the CSI report further includes sixth indication information, and the sixth indication information is used to indicate the mapping order of at least a portion of the plurality of first CSIs, the order of the plurality of first CSIs obtained by the network-side device through demapping is the same as the mapping order indicated by the sixth indication information.

[0195] In one embodiment, the sixth indication information is also used to indicate the order of other objects besides at least a portion of the mapping order of a plurality of first CSIs, the other objects including channel quality indications (CQIs).

[0196] In one embodiment, the method further includes: the network-side device sending target configuration information to the terminal; wherein the target configuration information is used to indicate to the terminal at least a portion of the mapping order of the plurality of first CSIs.

[0197] In one embodiment, the target configuration information includes at least one of the following: first indication information for indicating the mapping order of at least a portion of the plurality of first CSIs; second indication information for indicating the demapping order of at least a portion of the plurality of first CSIs; third indication information for indicating at least one measurement resource group, wherein the mapping order of the first CSIs corresponds to or is associated with the order of the measurement resources in the measurement resource group; fourth indication information for indicating a target rule, wherein the target rule describes the method for determining the mapping order of at least a portion of the plurality of first CSIs; and fifth indication information for indicating the order of the plurality of measurement resources, wherein the mapping order of the first CSIs corresponds to or is associated with the order of the measurement resources.

[0198] In one embodiment, the fourth indication information includes at least one of the following: a first identifier for identifying the target rule; and a first description for describing the content of the target rule.

[0199] In one embodiment, the measurement resource is associated with at least one of the following: measurement beam, measurement frequency, and transmission mode.

[0200] In one embodiment, the method further includes: the network-side device receiving terminal capability information from the terminal; wherein the terminal capability information is used to indicate whether the terminal has the capability of joint mapping of multiple CSIs.

[0201] 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.

[0202] 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.

[0203] 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.

[0204] 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.

[0205] For details, see Figure 5 When the CSI transmission device 500 is a terminal or a component in a terminal, the CSI transmission device 500 includes a processing module 510 for jointly mapping multiple first CSIs to a second CSI; and a transmission module 520 for sending a CSI report to a network-side device; wherein the CSI report includes the second CSI, and the multiple first CSIs correspond to or are associated with different measurement resources.

[0206] In one embodiment, jointly mapping a plurality of first CSIs to a second CSI includes: determining a mapping order of the plurality of first CSIs; and jointly mapping the plurality of first CSIs to the second CSI based on the mapping order of the plurality of first CSIs and a predetermined mapping relationship; wherein the mapping order of the plurality of first CSIs is the same as the CSI mapping order supported by the predetermined mapping relationship.

[0207] In one embodiment, determining the mapping order of the plurality of first CSIs includes: receiving target configuration information from the network-side device, the target configuration information being used to indicate the mapping order of at least a portion of the plurality of first CSIs; and determining the mapping order of the plurality of first CSIs based on the target configuration information.

[0208] In one embodiment, the target configuration information includes at least one of the following: first indication information for indicating the mapping order of at least a portion of the plurality of first CSIs; second indication information for indicating the demapping order of at least a portion of the plurality of first CSIs; third indication information for indicating the order of measurement resources in at least one measurement resource group; fourth indication information for indicating a target rule, the target rule being used to describe the method for determining the mapping order of at least a portion of the plurality of first CSIs; and fifth indication information for indicating the order of the plurality of measurement resources, wherein the mapping order of the first CSIs corresponds to or is associated with the order of the measurement resources.

[0209] In one embodiment, the fourth indication information includes at least one of the following: a first identifier for identifying the target rule; and a first description for describing the content of the target rule.

[0210] In one embodiment, determining the mapping order of the plurality of first CSIs based on the target configuration information includes at least one of the following: when the target configuration information includes second indication information, the terminal determines that the mapping order of the plurality of first CSIs is the same as the demapping order of at least a portion of the plurality of first CSIs; when the target configuration information includes third indication information, the terminal selects a target measurement resource group from at least one measurement resource group, and determines that the mapping order of the plurality of first CSIs is the same as the order of the measurement resources in the target measurement resource group; when the target configuration information includes the fifth indication information, the terminal determines that the mapping order of the plurality of first CSIs is the same as the order of the plurality of measurement resources.

[0211] In one embodiment, the measurement resource is associated with at least one of the following: measurement beam, measurement frequency, and transmission mode.

[0212] In one embodiment, the predetermined mapping relationship is implemented through an AI model; 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 in testing; and a reference AI unit of the AI ​​unit used by the terminal in testing.

[0213] In one embodiment, the CSI report further includes sixth indication information; wherein the sixth indication information is used to indicate the mapping order of at least a portion of the plurality of first CSIs.

[0214] In one embodiment, the sixth indication information is also used to indicate the order of other objects besides at least a portion of the mapping order of a plurality of first CSIs, the other objects including channel quality indications (CQIs).

[0215] In one embodiment, the transmission module 520 is further configured to: report terminal capability information to the network-side device; wherein the terminal capability information is used to indicate whether the terminal has the capability of multiple CSI joint mapping.

[0216] 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.

[0217] 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 CSI reports from a terminal, wherein the CSI report includes a second CSI; and a processing module 620 for demapping the second CSI into a plurality of first CSIs, wherein the plurality of first CSIs correspond to or are associated with different measurement resources.

[0218] In one embodiment, where the CSI report further includes sixth indication information, and the sixth indication information is used to indicate the mapping order of at least a portion of the plurality of first CSIs, the order of the plurality of first CSIs obtained by the network-side device through demapping is the same as the mapping order indicated by the sixth indication information.

[0219] In one embodiment, the sixth indication information is also used to indicate the order of other objects besides at least a portion of the mapping order of a plurality of first CSIs, the other objects including channel quality indications (CQIs).

[0220] In one embodiment, the method further includes: the network-side device sending target configuration information to the terminal; wherein the target configuration information is used to indicate to the terminal at least a portion of the mapping order of the plurality of first CSIs.

[0221] In one embodiment, the target configuration information includes at least one of the following: first indication information for indicating the mapping order of at least a portion of the plurality of first CSIs; second indication information for indicating the demapping order of at least a portion of the plurality of first CSIs; third indication information for indicating at least one measurement resource group, wherein the mapping order of the first CSIs corresponds to or is associated with the order of the measurement resources in the measurement resource group; fourth indication information for indicating a target rule, wherein the target rule describes the method for determining the mapping order of at least a portion of the plurality of first CSIs; and fifth indication information for indicating the order of the plurality of measurement resources, wherein the mapping order of the first CSIs corresponds to or is associated with the order of the measurement resources.

[0222] In one embodiment, the fourth indication information includes at least one of the following: a first identifier for identifying the target rule; and a first description for describing the content of the target rule.

[0223] In one embodiment, the measurement resource is associated with at least one of the following: measurement beam, measurement frequency, and transmission mode.

[0224] In one embodiment, the method further includes: the network-side device receiving terminal capability information from the terminal; wherein the terminal capability information is used to indicate whether the terminal has the capability of joint mapping of multiple CSIs.

[0225] The CSI transmission device 600 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.

[0226] 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.

[0227] 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.

[0228] 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.

[0229] 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.

[0230] 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.

[0231] 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.

[0232] 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.

[0233] 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.

[0234] The processor 810 is used to jointly map multiple first CSIs to a second CSI; the radio frequency unit 801 is used to send a CSI report to the network-side device; wherein the CSI report includes the second CSI, and the multiple first CSIs correspond to or are associated with different measurement resources.

[0235] In one embodiment, jointly mapping a plurality of first CSIs to a second CSI includes: determining a mapping order of the plurality of first CSIs; and jointly mapping the plurality of first CSIs to the second CSI based on the mapping order of the plurality of first CSIs and a predetermined mapping relationship; wherein the mapping order of the plurality of first CSIs is the same as the CSI mapping order supported by the predetermined mapping relationship.

[0236] In one embodiment, determining the mapping order of the plurality of first CSIs includes: receiving target configuration information from the network-side device, the target configuration information being used to indicate the mapping order of at least a portion of the plurality of first CSIs; and determining the mapping order of the plurality of first CSIs based on the target configuration information.

[0237] In one embodiment, the target configuration information includes at least one of the following: first indication information for indicating the mapping order of at least a portion of the plurality of first CSIs; second indication information for indicating the demapping order of at least a portion of the plurality of first CSIs; third indication information for indicating at least one measurement resource group, wherein the mapping order of the first CSIs corresponds to or is associated with the order of the measurement resources in the measurement resource group; fourth indication information for indicating a target rule, wherein the target rule describes the method for determining the mapping order of at least a portion of the plurality of first CSIs; and fifth indication information for indicating the order of the plurality of measurement resources, wherein the mapping order of the first CSIs corresponds to or is associated with the order of the measurement resources.

[0238] In one embodiment, the fourth indication information includes at least one of the following: a first identifier for identifying the target rule; and a first description for describing the content of the target rule.

[0239] In one embodiment, determining the mapping order of the plurality of first CSIs based on the target configuration information includes at least one of the following: when the target configuration information includes second indication information, the terminal determines that the mapping order of the plurality of first CSIs is the same as the demapping order of at least a portion of the plurality of first CSIs; when the target configuration information includes third indication information, the terminal selects a target measurement resource group from at least one measurement resource group, and determines that the mapping order of the plurality of first CSIs is the same as the order of the measurement resources in the target measurement resource group; when the target configuration information includes the fifth indication information, the terminal determines that the mapping order of the plurality of first CSIs is the same as the order of the plurality of measurement resources.

[0240] In one embodiment, the measurement resource is associated with at least one of the following: measurement beam, measurement frequency, and transmission mode.

[0241] In one embodiment, the predetermined mapping relationship is implemented through an AI model; 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 in testing; and a reference AI unit of the AI ​​unit used by the terminal in testing.

[0242] In one embodiment, the CSI report further includes sixth indication information; wherein the sixth indication information is used to indicate the mapping order of at least a portion of the plurality of first CSIs.

[0243] In one embodiment, the sixth indication information is also used to indicate the order of other objects besides at least a portion of the mapping order of a plurality of first CSIs, the other objects including channel quality indications (CQIs).

[0244] In one embodiment, the radio frequency unit 801 is further configured to: report terminal capability information to the network-side device; wherein the terminal capability information is used to indicate whether the terminal has the capability of multiple CSI joint mapping.

[0245] 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.

[0246] 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.

[0247] Specifically, embodiments of this application also provide a network-side device, which can 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.

[0248] 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.

[0249] 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.

[0250] The network-side device 900 may also include a network interface 906, such as a Common Public Radio Interface (CPRI).

[0251] 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.

[0252] 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.

[0253] 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.

[0254] 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.

[0255] 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.

[0256] 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.

[0257] 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.

[0258] 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.

[0259] 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.

[0260] 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 multiple first CSIs to a second CSI; The terminal sends a CSI report to the network-side device; The CSI report includes the second CSI, and the plurality of first CSIs correspond to or are associated with different measurement resources.

2. The method as described in claim 1, characterized in that, The terminal jointly maps multiple first CSIs to a second CSI, including: The terminal determines the mapping order of the plurality of first CSIs; The terminal maps the plurality of first CSIs to the second CSI according to the mapping order of the plurality of first CSIs and based on a predetermined mapping relationship; The mapping order of the plurality of first CSIs is the same as the CSI mapping order supported by the predetermined mapping relationship.

3. The method as described in claim 2, characterized in that, The terminal determines the mapping order of the plurality of first CSIs, including: The terminal receives target configuration information from the network-side device, the target configuration information being used to indicate the mapping order of at least a portion of the plurality of first CSIs; The terminal determines the mapping order of the plurality of first CSIs based on the target configuration information.

4. The method as described in claim 3, characterized in that, The target configuration information includes at least one of the following: First indication information is used to indicate the mapping order of at least a portion of the plurality of first CSIs; The second indication information is used to indicate the demapping order of at least a portion of the plurality of first CSIs; The third indication information is used to indicate at least one measurement resource group, wherein the mapping order of the first CSI corresponds to or is associated with the order of the measurement resources in the measurement resource group; The fourth indication information is used to indicate the target rule, which describes how the mapping order of at least a portion of the plurality of first CSIs is determined; The fifth indication information is used to indicate the order of multiple measurement resources, wherein the mapping order of the first CSI corresponds to or is associated with the order of the measurement resources.

5. The method as described in claim 4, characterized in that, The fourth instruction information includes at least one of the following: A first identifier is used to identify the target rule; The first descriptive information is used to describe the content of the target rule.

6. The method as described in claim 4, characterized in that, The terminal determines the mapping order of the plurality of first CSIs according to the target configuration information, including at least one of the following: When the target configuration information includes second indication information, the terminal determines that the mapping order of the plurality of first CSIs is the same as the demapping order of at least a portion of the plurality of first CSIs; When the target configuration information includes third indication information, the terminal selects a target measurement resource group from at least one measurement resource group, and determines that the mapping order of the plurality of first CSIs is the same as the order of the measurement resources in the target measurement resource group; When the target configuration information includes the fifth indication information, the terminal determines that the mapping order in the plurality of first CSIs is the same as the order of the plurality of measurement resources.

7. The method according to any one of claims 1-6, characterized in that, The measurement resource is associated with at least one of the following: measurement beam, measurement frequency, and transmission mode.

8. The method according to any one of claims 2-7, characterized in that, The predetermined mapping relationship is implemented through an artificial intelligence (AI) unit; 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 test by the terminal; The terminal uses a reference AI unit for its AI unit during testing.

9. The method according to any one of claims 2-8, characterized in that, The CSI report also includes a sixth indication; The sixth indication information is used to indicate the mapping order of at least a portion of the plurality of first CSIs.

10. The method as described in claim 9, characterized in that, The sixth indication information is also used to indicate the order of other objects besides at least a portion of the mapping order of the plurality of first CSIs, the other objects including channel quality indicators (CQI).

11. The method according to any one of claims 1-10, characterized in that, The method further includes: The terminal reports its capability information to the network-side device. The terminal capability information is used to indicate whether the terminal has the capability of joint mapping of multiple CSIs.

12. A method for transmitting Channel State Information (CSI), characterized in that, include: The network-side device receives a CSI report from the terminal, wherein the CSI report includes a second CSI; The network-side device demaps the second CSI into multiple first CSIs; The plurality of first CSIs correspond to or are associated with different measurement resources.

13. The method as described in claim 12, characterized in that, If the CSI report further includes a sixth indication information, and the sixth indication information is used to indicate the mapping order of at least a portion of the plurality of first CSIs, the order of the plurality of first CSIs obtained by the network-side device through demapping is the same as the mapping order indicated by the sixth indication information.

14. The method as described in claim 13, characterized in that, The sixth indication information is also used to indicate the order of other objects besides at least a portion of the mapping order of the plurality of first CSIs, the other objects including channel quality indicators (CQI).

15. The method according to any one of claims 12-14, characterized in that, The method further includes: The network-side device sends target configuration information to the terminal; The target configuration information is used to indicate to the terminal the mapping order of at least a portion of the plurality of first CSIs.

16. The method as described in claim 15, characterized in that, The target configuration information includes at least one of the following: First indication information is used to indicate the mapping order of at least a portion of the plurality of first CSIs; The second indication information is used to indicate the demapping order of at least a portion of the plurality of first CSIs; The third indication information is used to indicate at least one measurement resource group, wherein the mapping order of the first CSI corresponds to or is associated with the order of the measurement resources in the measurement resource group; The fourth indication information is used to indicate the target rule, which describes how the mapping order of at least a portion of the plurality of first CSIs is determined; The fifth indication information is used to indicate the order of multiple measurement resources, wherein the mapping order of the first CSI corresponds to or is associated with the order of the measurement resources.

17. The method as described in claim 16, characterized in that, The fourth instruction information includes at least one of the following: A first identifier is used to identify the target rule; The first descriptive information is used to describe the content of the target rule.

18. The method according to any one of claims 12-16, characterized in that, The measurement resource is associated with at least one of the following: measurement beam, measurement frequency, and transmission mode.

19. The method according to any one of claims 12-18, characterized in that, The method further includes: The network-side device receives terminal capability information from the terminal; The terminal capability information is used to indicate whether the terminal has the capability of joint mapping of multiple CSIs.

20. A transmission apparatus for Channel State Information (CSI), characterized in that, include: The processing module is used to jointly map multiple first CSIs to a second CSI; The transmission module is used to send CSI reports to network-side devices; The CSI report includes the second CSI, and the plurality of first CSIs correspond to or are associated with different measurement resources.

21. The apparatus as claimed in claim 20, characterized in that, The method of jointly mapping multiple first CSIs to a second CSI includes: Determine the mapping order of the plurality of first CSIs; Based on the mapping order of the plurality of first CSIs and a predetermined mapping relationship, the plurality of first CSIs are jointly mapped to the second CSI; The mapping order of the plurality of first CSIs is the same as the CSI mapping order supported by the predetermined mapping relationship.

22. 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, wherein the CSI report includes a second CSI; The processing module is used to demap the second CSI into multiple first CSIs; The plurality of first CSIs correspond to or are associated with different measurement resources.

23. The apparatus as claimed in claim 22, characterized in that, The transmission module is further configured to: send target configuration information to the terminal; wherein the target configuration information is used to indicate to the terminal the mapping order of at least a portion of the plurality of first CSIs.

24. 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 11.

25. 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 12 to 19.

26. 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 11, or implement the steps of the method as claimed in any one of claims 12 to 19.

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