Channel state information sending method, channel state information receiving method, communication apparatus, and storage medium

Abstract

Provided in the embodiments of the present disclosure are a channel state information sending method, a channel state information receiving method, a communication apparatus, and a storage medium. The sending method comprises: obtaining channel state information on the basis of a measurement for a reference signal resource sent by a second node; and sending the channel state information to the second node, wherein the channel state information comprises a bitmap which is used for indicating index information of a target reference signal resource.

Description

Channel state information sending and receiving method, communication device and storage medium

[0001] This disclosure claims priority to Chinese patent application No. 202311439129.8, filed on October 31, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the field of communication technology, and in particular to a method for sending and receiving channel state information, a communication device, and a storage medium. Background Art

[0003] Currently, multi-antenna technology has been widely used in various radio communication technologies, such as the long-term evolution (LTE) mobile communication network of the fourth-generation mobile communication technology (4G) and the new radio (NR) mobile communication network of the fifth-generation mobile communication technology (5G). In the future sixth-generation mobile communication technology (6G), multi-antenna technology is also receiving extensive attention and research.

[0004] Summary of the Invention

[0005] In a first aspect, the present disclosure provides a method for transmitting channel state information, the method being applied to a first node. The method comprises:

[0006] Obtaining channel state information based on measurement of a reference signal resource sent by the second node;

[0007] Channel state information is sent to the second node, where the channel state information includes a bitmap for indicating index information of a target reference signal resource.

[0008] In a second aspect, the present disclosure provides a method for receiving channel state information, which is applied to a second node. The method includes:

[0009] sending a reference signal resource to the first node;

[0010] Channel state information sent by the first node is received, where the channel state information includes a bitmap for indicating index information of a target reference signal resource.

[0011] In a third aspect, the present disclosure provides a communication device, applied to a first node, the communication device including:

[0012] a processing module, configured to obtain channel state information based on measurement of a reference signal resource sent by the second node;

[0013] The sending module is configured to send channel state information to the second node, where the channel state information includes a bitmap for indicating index information of a target reference signal resource.

[0014] In a fourth aspect, the present disclosure provides another communication device, applied to a second node. The communication device includes:

[0015] A sending module, configured to send a reference signal resource to the first node;

[0016] The receiving module is configured to receive channel state information sent by the first node, where the channel state information includes a bitmap for indicating index information of a target reference signal resource.

[0017] In a fifth aspect, a communication device is provided, comprising: a processor and a memory; the memory stores instructions executable by the processor; when the processor is configured to execute the instructions, the communication device implements any one of the methods provided in the first or second aspect above.

[0018] In a sixth aspect, a computer-readable storage medium is provided, which stores computer instructions. When the computer instructions are executed on a computer, the computer executes any one of the methods provided in the first aspect or the second aspect.

[0019] In a seventh aspect, a computer program product comprising computer instructions is provided, which, when executed on a computer, causes the computer to execute any one of the methods provided in the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the technical solution of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solution of the present disclosure and do not constitute a limitation to the technical solution of the present disclosure.

[0021] FIG1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure.

[0022] FIG2 is a flowchart of a method for sending channel state information provided by an embodiment of the present disclosure.

[0023] FIG3 is a schematic diagram of a reference signal resource provided by an embodiment of the present disclosure.

[0024] FIG4A is a schematic diagram of a bitmap provided by an embodiment of the present disclosure.

[0025] FIG4B is a schematic diagram of another bitmap provided in an embodiment of the present disclosure.

[0026] FIG5 is a schematic diagram of another reference signal resource provided by an embodiment of the present disclosure.

[0027] FIG6 is a schematic diagram of a measurement and reporting timing relationship provided by an embodiment of the present disclosure.

[0028] FIG7 is a schematic diagram of a spatial relationship hypothesis provided by an embodiment of the present disclosure.

[0029] FIG8 is a flowchart of a method for receiving channel state information provided by an embodiment of the present disclosure.

[0030] FIG9 is a schematic diagram showing the composition of a communication device provided in an embodiment of the present disclosure.

[0031] FIG10 is a schematic diagram showing the composition of another communication device provided in an embodiment of the present disclosure.

[0032] FIG11 is a schematic structural diagram of a communication device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0034] In the description of the present disclosure, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: only A, only B, and A and B. In addition, "at least one" means one or more, and "a plurality" means two or more. Words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

[0035] It should be noted that in this disclosure, words such as "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described in this disclosure as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present related concepts in some way.

[0036] In millimeter-wave communication systems, large-scale antenna arrays are typically used to form high-gain shaped beams to compensate for transmission losses and ensure system coverage. At the same time, both user devices and base stations need to adjust their beams and achieve precise alignment during initial access and data transmission to ensure maximum gain. The 3rd Generation Partnership Project (3GPP) has developed a comprehensive set of beam management procedures for adjusting the beam direction in high-frequency bands and maintaining a suitable transmit and receive beam pair, including beam scanning, beam measurement, beam reporting, and beam indication.

[0037] During the beam scanning process, the base station can configure multiple reference signal resources for beam measurement for the terminal, including channel state information-reference symbol (CSI-RS) or synchronization signal block (SSB), and the reference signal resources are carried on different downlink transmit beams respectively. The terminal can measure the reference signal and report the beam measurement results to the base station. The reporting parameters of the beam measurement include the reference signal resource identifier SSBRI / CRI (SSB resource identifier / CSI-RS resource identifier, SSB resource identifier / CSI-RS resource identifier) ​​corresponding to one or more transmit beams selected by the terminal, the physical layer reference signal receiving power (RSRP) or the physical layer signal to interference plus noise ratio (SINR). In the beam management method based on artificial intelligence, the base station only needs to transmit reference signal resources in part of the beam space or part of the time, and use the artificial intelligence algorithm to predict the full beam space information and the optimal beam at all times. However, the reporting overhead reported by the terminal will increase linearly with the increase of reporting beams, that is, when the reported beam data is large, it will lead to a larger beam reporting overhead.

[0038] In view of this, the present disclosure provides a method for transmitting channel state information, comprising: obtaining channel state information based on measurement of a reference signal resource transmitted by a second node; and transmitting the channel state information to the second node, wherein the channel state information includes a bitmap for indicating index information of a target reference signal resource. This reduces reporting overhead.

[0039] The technical solutions provided by the embodiments of the present disclosure can be applied to various mobile communication networks, for example, new radio (NR) mobile communication networks using fifth-generation mobile communication technology (5G), future mobile communication networks (including but not limited to various sixth-generation mobile communication technologies, 6G) or multiple communication convergence systems, etc. The embodiments of the present disclosure are not limited to this.

[0040] The network architecture of the mobile communication network (including but not limited to 3G, 4G, 5G and future mobile communication networks) in the embodiments of the present disclosure may include network-side devices (for example, including but not limited to base stations) and receiving-side devices (for example, including but not limited to terminals). And it should be understood that, in this example, in the downlink, the first communication node (also referred to as the first communication node device) may be a base station-side device, and the second communication node (also referred to as the second communication node device) may be a terminal-side device. Of course, in the uplink, the first communication node may also be a terminal-side device, and the second communication node may also be a base station-side device. In the device-to-device communication between the two communication nodes, the first communication node and the second communication node may both be base stations or terminals. The first communication node and the second communication node may be referred to as the first node and the second node, respectively.

[0041] Exemplarily, taking the network side device as a base station and the receiving side device as a terminal as an example, FIG1 shows a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure. As shown in FIG1 , the communication system 10 includes multiple base stations (e.g., base station 201 and base station 202) and multiple terminals (e.g., terminal 301, terminal 302, terminal 303, and terminal 304). Multiple base stations and multiple terminals can be connected in communication. A base station can provide network services to a terminal in one cell, or it can provide network services to terminals in multiple cells at the same time.

[0042] In some embodiments, the base station can be a base station or an evolved base station (eNB or eNodeB) in long term evolution (LTE), long term evolution advanced (LTEA), a base station device in a 5G network, or a base station in a future communication system, etc. The base station may include various macro base stations, micro base stations, home base stations, wireless remotes, reconfigurable intelligent surfaces (RISs), routers, wireless fidelity (WIFI) devices, or various network side devices such as primary cells and collaborative cells (secondary cells).

[0043] In some embodiments, the terminal can be a device with wireless transceiver capabilities, which can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water (such as a ship, etc.); it can also be deployed in the air (for example, on an airplane, a balloon, and a satellite, etc.). The terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. The embodiments of the present disclosure do not limit the application scenarios. The terminal may sometimes also be referred to as a user, user equipment (UE), access terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication device, UE agent or UE device, etc., but the embodiments of the present disclosure are not limited to this.

[0044] In some embodiments, high-layer signaling includes, but is not limited to, radio resource control (RRC) and media access control-control element (MAC CE), or other high-layer signaling above the physical layer. Physical layer signaling includes, but is not limited to, downlink control information and uplink control information. As an example, physical layer signaling can be transmitted between a base station and a terminal on a physical downlink control channel (PDCCH) and on a physical uplink control channel (PUCCH).

[0045] In some embodiments, the indicator of a parameter may also be referred to as an index or identifier (ID), and the concepts of indication, identifier and index are equivalent. For example, the resource identifier of a wireless system may also be referred to as a resource indication or a resource index. The resource indication of a wireless system includes, but is not limited to, one of the following: reference signal resources, reference signal resource groups, reference signal resource configurations, channel state information (CSI) reports, CSI report sets, terminals, base stations, panels, neural networks, sub-neural networks, neural network layers, precoding matrices, beams, transmission modes, sending modes, receiving modes, modules, models, functional modules, functions, and the like. The base station may indicate the identifier of one or a group of resources to the terminal through various high-layer signaling or physical layer signaling. The terminal may also feedback the identifier of one or a group of resources to the base station through high-layer signaling and / or physical layer signaling.

[0046] In some embodiments, to calculate channel state information or perform channel estimation, mobility management, positioning, etc., a base station or user needs to send a reference signal (RS). Reference signals include, but are not limited to: channel-state information reference signal (CSI-RS), which includes zero-power CSI-RS (ZP CSI-RS) and non-zero-power CSI-RS (NZP CSI-RS); channel-state information-interference measurement signal (CSI-IM); sounding reference signal (SRS); synchronization signal block (SSB); physical broadcast channel (PBCH); synchronization signal block / physical broadcast channel (SSB / PBCH). NZP CSI-RS can be used to measure channel or interference, and CSI-RS can also be used for tracking, called tracking reference signal (TRS). CSI-IM is generally used to measure interference, and SRS is used to measure uplink channels. In addition, the resource element (RE) set included in the time-frequency resources used to transmit reference signals is called a reference signal resource, such as CSI-RS resource, SRS resource, CSI-IM resource, SSB resource. In the present disclosure, SSB includes synchronization signal blocks and / or physical broadcast channels.

[0047] In some embodiments, in order to save signaling overhead, etc., multiple reference signal resources may be divided into multiple sets (such as CSI-RS resource set, CSI-IM resource set, SRS resource set), the reference signal resource set includes at least one reference signal resource, and multiple reference signal resource sets can all come from the same reference signal resource setting (such as CSI-RS resource setting, SRS resource setting, where CSI-RS resource setting may be merged with CSI-IM resource setting, both referred to as CSI-RS resource setting) to configure parameter information.

[0048] In some embodiments, the beam includes a transmit beam, a receive beam, a receive beam and a transmit beam pair, and a transmit beam and a receive beam pair. In some embodiments, a beam can be understood as a resource, such as a reference signal resource, a transmit-end spatial filter, a receive-end spatial filter, a spatial filter, a spatial reception parameter, a transmit-end precoding, a receive-end precoding, an antenna port, an antenna weight vector, an antenna weight matrix, etc. The beam index can be replaced with a resource index (such as a reference signal resource index) because the beam can be bound to some time-frequency code resources for transmission. The beam can also be a transmission (transmit / receive) mode; the transmission mode may include spatial division multiplexing, frequency domain / time domain diversity, beamforming, etc. In some embodiments, a beam pair includes a combination of a transmit beam and a receive beam.

[0049] In some embodiments, a beam is equivalent to a beam state, a quasi-co-location (QCL) state, a transmission configuration indicator (TCI) state, a spatial relation, spatial relation information, a reference signal (RS), a reference signal resource, a spatial filter, and a precoding. In some embodiments, a transmit beam is equivalent to a QCL state, a TCI state, a spatial relation, a spatial relation state, an uplink / downlink reference signal (such as a CSI-RS, SSB, DMRS (Demodulation Reference Signal), SRS, PRACH (Physical Random Access Channel)), a transmit spatial filter, and a transmit precoding. In some embodiments, a receive beam is equivalent to a QCL state, a TCI state, a spatial relation, a spatial relation state, spatial reception parameters, a spatial filter, a receive spatial filter, and a receive precoding. A spatial filter is also called a spatial domain filter and can be either on the base station side or on the UE side. In some embodiments, the base station may perform quasi co-location (QCL) configuration for two reference signals and inform the user end to describe the channel characteristic hypothesis. The parameters involved in the quasi co-location include at least: Doppler spread, Doppler shift, delay spread, average delay, average gain and spatial parameter (Spatial Rx parameter, or Spatial parameter); wherein the spatial parameter may include spatial reception parameter, angle information, spatial correlation of the receiving beam, average delay, correlation of time-frequency channel response (including phase information). The angle information may include at least one of the following: angle of arrival (AOA), angle of departure (AOD), zenith angle of departure (ZOD), and zenith angle of arrival (ZOA). The spatial domain filter may be at least one of the following: a DFT (discrete Fourier transform) vector, a precoding vector, a DFT matrix, a precoding matrix, or a vector formed by a linear combination of multiple DFTs, or a vector formed by a linear combination of multiple precoding vectors. In some embodiments, the concepts of vector and vector may be interchangeable.

[0050] In some examples, in order to better transmit data or signals, the base station or terminal needs to obtain measurement parameters. The measurement parameters may include channel state information or other parameters used to characterize the channel, wherein the channel state information may include at least one of the following: channel state information-reference signal resource indicator (CSI-RS resource indicator, CRI), synchronization signal block resource indicator (synchronization signals block resource indicator, SSBRI), layer 1 reference signal received power (L1 reference signal received power, L1-RSRP or RSRP), differential RSRP (Differential RSRP). Layer 1 reference signal signal to interference noise ratio (L1 signal to interference noise ratio, L1-SINR or SINR), differential L1-SINR (Differential L1-SINR), reference signal received quality (reference signal received quality, RSRQ), channel quality indicator (CQI), precoding matrix indicator (PMI), layer indicator (LI), rank indicator (RI), precoding information. Precoding information includes first-category precoding information, such as codebook-based precoding information. Here, the precoding matrix indicator is a type of codebook-based precoding information. Precoding information also includes non-codebook-based implementations, such as second-category precoding information, such as precoding information obtained using advanced technologies such as artificial intelligence.

[0051] In some embodiments, the beam parameter information includes at least one of the following: the reference signal received power of layer 1 corresponding to at least one beam, the reference signal signal to interference and noise ratio of layer 1 corresponding to at least one beam, and the confidence level / probability corresponding to at least one beam (i.e., the probability that the beam has the maximum measured RSRP or the maximum measured SINR). In some embodiments, the beam parameter information is the reference signal received quality corresponding to at least one beam. In some embodiments, the beam parameter information is the beam angle corresponding to at least one beam (e.g., at least one of AOA, ZOA, AOD, ZOD, etc., sometimes also referred to as horizontal angle of arrival, vertical angle of arrival, horizontal angle of departure, and vertical angle of departure, respectively). In some embodiments, the beam parameter information is the transmit beam index corresponding to at least one beam. In some embodiments, the beam parameter information is the receive beam index corresponding to at least one beam. In some embodiments, the beam parameter information is the transmit beam and receive beam pair index (referred to as beam pair index or beam pair) corresponding to at least one beam. In some embodiments, the beam parameter information is the beam domain receive power map (BDRPM) corresponding to at least one beam. In some embodiments, the beam parameter information is the channel state information reference signal resource indicator corresponding to at least one beam. In some embodiments, the beam parameter information is a synchronization signal block resource indicator (SSBRI) or other reference signal resource indicator corresponding to at least one beam, such as SRSRI (sounding reference signal resource indicator). In some embodiments, the beam parameter information is a combination of at least two of the following beam parameter information corresponding to at least one beam: RSRP, RSRQ, SINR, beam angle, transmit beam index, receive beam index, beam pair index, CRI, SSBRI, etc. In some embodiments, the beam parameter information is a linear value of one of RSRP, RSRQ, and SINR. In some embodiments, the beam parameter information is a logarithmic value or decibel value (DB) of one of RSRP, RSRQ, and SINR.

[0052] In some embodiments, beam parameter information may also be referred to as or equivalent to beam quality information, channel measurement results, beam measurement results, measurement results, measurement parameters, or channel quality information. In some embodiments, beam parameter information is a subset of channel state information, meaning that beam parameter information is channel state information, which in turn is a measurement parameter. In some embodiments, measurement parameters, channel state information, and beam parameter information are all measurement results, processing results, or generation results.

[0053] In some embodiments, to transmit channel state information at the physical layer, the terminal and the base station define a CSI report (CSI report or CSI report config), where the CSI report defines at least one of the following parameters: time-frequency resources used for CSI feedback, report quality (report Quantity) included in the CSI, time domain category (report Config Type) for CSI feedback, channel measurement resources, interference measurement resources, measurement bandwidth size, etc. The CSI report can be transmitted on uplink transmission resources, where uplink transmission resources include PUSCH (physical uplink shared channel) and PUCCH, and the CSI report also includes time domain characteristics, including periodic CSI report (P-CSI), aperiodic CSI report (AP-CSI), and semi-persistent CSI report (SP-CSI).

[0054] In some embodiments, the base station configures the terminal with NC CSI reports (CSI reports) that need to be fed back to the base station through high-layer signaling and / or physical layer signaling. Each CSI report has an identity (ID), called a CSI report ID. The terminal can select MC CSI reports from the NC CSI reports based on its own computing power or processing power and the requirements of the base station. And based on the uplink feedback resources, at least one CSI report from the MC CSI reports is fed back, where NC and MC are positive integers and MC<=NC. In one example, MC CSI reports need to be fed back, but the feedback resources of at least two of the MC reports conflict. The conflict of feedback resources of the two reports means that at least one symbol in the transmission resources (such as PUCCH or PUSCH) corresponding to the two reports is the same and / or at least one subcarrier is the same. In some embodiments, feeding back CSI can also be called transmitting CSI or sending CSI, such as carrying channel state information on uplink transmission resources for feedback or transmission. The uplink transmission resources and the corresponding CSI are both indicated by a channel state information report. In some embodiments, feeding back or transmitting a CSI report refers to feeding back channel state information of the CSI report configuration. In some embodiments, feeding back or transmitting a CSI report refers to transmitting the content of the CSI report configuration that needs to be transmitted via a transmission resource.

[0055] In some embodiments, artificial intelligence (AI) includes self-learning devices, components, software, and modules such as machine learning (ML), deep learning, reinforcement learning, transfer learning, deep reinforcement learning, and meta-learning. In some embodiments, artificial intelligence is implemented through an artificial intelligence network (or neural network), which includes multiple layers, each layer including at least one node. In one example, the neural network includes an input layer, an output layer, and at least one hidden layer. Each layer of the neural network includes, but is not limited to, at least one of a fully connected layer, a dense layer, a convolutional layer, a transposed convolutional layer, a direct connection layer, an activation function, a normalization layer, and a pooling layer. In some embodiments, each layer of the neural network can include a sub-neural network, such as a residual network block (or Resnet block), a dense network (Densenet Block), a recurrent neural network (RNN), and the like. The artificial intelligence network can be implemented through a model, wherein the model can include a neural network model, wherein the neural network model includes a neural network model structure and / or neural network model parameters, wherein the neural network model structure can be referred to as the model structure, and the neural network model parameters can be referred to as the network parameters or model parameters. A model structure defines the network architecture, including the number of layers of the neural network, the size of each layer, the activation function, the connection status, the convolution kernel and the size of the convolution step, the convolution type (such as 1D convolution, 2D convolution, 3D convolution, hollow convolution, transposed convolution, separable convolution, grouped convolution, extended convolution, etc.), while the network parameters are the weights and / or biases of each layer of the neural network model and their values. A model structure can correspond to multiple sets of different neural network model parameter values ​​to adapt to different scenarios. The neural network model parameters are obtained through online training or offline training. For example, by inputting at least one sample and label, the neural network model is trained to obtain the neural network model parameters.

[0056] In some embodiments, a model refers to a general term used to describe a processing method, function, feature, or feature group that a terminal can perform. In some embodiments, a model is equivalent to a function (function / functionality), a functional module, a functional entity, a processing method, an information processing method, an implementation, a feature, a feature group, a configuration, a configuration combination, or a configuration set. In some embodiments, each model corresponds to a model indicator (model ID) or a functionality indicator or a model identity (model ID) or a functionality identity. In some embodiments, a model identity may also have one of the following other equivalent names or concepts: model index, first identifier, functionality identifier, model indicator, etc.

[0057] In some embodiments, a model refers to a data flow from the original input of a sample to the output target through multiple linear or nonlinear components. The model includes a neural network model, a non-artificial intelligence module for processing information or its corresponding model, and a functional component or function that maps input information to output information (the mapping here includes linear mapping and nonlinear mapping).

[0058] In some examples, a model includes a model structure and model parameters. For example, if the model is a neural network model, the neural network model includes a neural network model structure and neural network model parameters, which are used to describe the structure of the neural network and the parameter values ​​of the neural network, respectively. A neural network model structure can correspond to multiple neural network model parameters, that is, the neural network model structure can be the same, but the corresponding neural network model parameter values ​​can be different.

[0059] The method provided by the present disclosure is described in detail below with reference to the accompanying drawings.

[0060] As shown in FIG2 , an embodiment of the present disclosure provides a method for transmitting channel state information, which is applied to a first node and includes the following steps:

[0061] S101. Obtain channel state information based on measurement of a reference signal resource sent by a second node, where the channel state information includes a bitmap for indicating index information of a target reference signal resource.

[0062] The length of the bitmap can be expressed as M, where the value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer. In addition, the character in the indicator bit of the bitmap can be used to indicate whether the reference signal resource corresponding to the indicator bit is reported. For example, if the character in the indicator bit is "0", it means that the reference signal resource corresponding to the indicator bit is not reported. Conversely, if the character in the indicator bit is "1", it means that the reference signal resource corresponding to the indicator bit is reported.

[0063] In some embodiments, the channel state information further includes at least one of the following: the number N of target reference signal resources, where N is a positive integer, the channel quality information corresponding to each target reference signal resource, and the identifier of the reference signal resource with the maximum channel quality information.

[0064] Number of target reference signal resources N:

[0065] For example, the first node may determine the reference signal resources that need to be reported, i.e., sent to the second node, i.e., target reference signal resources. The number of target reference signal resources may also be identified as N, where N is a positive integer. In some embodiments, N may be determined by the first node or by the second node.

[0066] In one example, the first node may further send the value of N to the second node. For example, the first node may determine the value of N itself and send the determined value of N to the second node.

[0067] In another example, the first node does not send the value of N to the second node. For example, the second node can configure the value of N for the first node, so the first node does not need to send the value of N to the second node.

[0068] Channel quality information corresponding to each target reference signal resource:

[0069] In some embodiments, the channel quality information includes at least one of the following: reference signal received power RSRP, signal to interference plus noise ratio SINR, reference signal received quality RSRQ, channel quality indicator CQI, confidence parameter, probability parameter.

[0070] The confidence parameter represents the parameter value that indicates the beam corresponding to the confidence parameter is the optimal beam (e.g., the beam associated with the maximum beam quality information). The probability parameter represents the probability value that the beam corresponding to the probability parameter is the optimal beam (e.g., the beam associated with the maximum beam quality information).

[0071] Exemplarily, the first node may further send or report channel quality information corresponding to each target reference signal resource corresponding to the N target reference signal resources to the second node.

[0072] Identifier of the reference signal resource with the maximum channel quality information:

[0073] In some embodiments, the identifier of the reference signal resource with the maximum channel quality information is used to identify the reference signal resource with the maximum channel quality information from the reference signal resource set.

[0074] For example, the first node may indicate the identifier of the reference signal resource with the largest channel quality information through the reference signal resource index. The identifier of the reference signal resource with the largest channel quality information may also be understood as the strongest beam position indication. The bit length occupied by this identifier is Indicates the round-up symbol.

[0075] Alternatively, the identifier of the reference signal resource with the maximum channel quality information is used to identify the reference signal resource with the maximum channel quality information from the N target reference signal resources.

[0076] Exemplarily, the first node may directly indicate the target reference signal resource with the largest beam quality information among the N target reference signal resources sent to the second node. The bit length occupied by the identifier of the reference signal resource with the largest channel quality information is Indicates the round-up symbol.

[0077] In addition, in the above embodiment, the first node may be a terminal, and the second node may be a base station.

[0078] It should be noted that when the first node reports in a differential manner, the maximum channel quality information and the differential values ​​of other channel quality information relative to the maximum channel quality information can be reported. Therefore, it is necessary to indicate the reference signal resource with the maximum channel quality information, that is, the channel state information can include the identifier of the reference signal resource with the maximum channel quality information.

[0079] For example, as shown in FIG3 , the number of reference signal resources M included in the reference signal resource set configured for channel measurement is 8, corresponding to identifiers 0-7 in FIG3 , and the solid circle represents the reference information resources to be reported. Furthermore, the number N of reference signal resources that the first node needs to send to the second node is 4, and the reference signal resource with the highest channel quality information among the N reference signal resources is reference signal resource 31. Thus, the channel state information sent by the first node to the second node may include a bitmap of '01010110' with a bit length of 8, an identifier of the reference signal resource with the highest channel quality information of '110' (i.e., the reference signal resource identifier CRI is 6) or '11' (i.e., the fourth of the four reported reference signal resources corresponds to the strongest beam position), and beam quality information RSRP corresponding to the four reported reference signal resources.

[0080] It should be noted that, under normal circumstances, after the first node measures the configured reference signal resource set, it needs to report the measurement results to the second node. The first node can report one or more reference signal resource identifiers to the second node, such as CSI-RS resource identifier CRI, SSBRI and corresponding beam quality information (such as RSRP, SINR, etc.). The bit length of the reported measurement results is shown in Table 1:

[0081] Table 1

[0082] as well as They represent the number of resources in the reference signal resource set configured for channel measurement. The number of reference signal resources that need to be reported is N, and the bit overhead caused by reporting the reference signal resource identifier CRI is Alternatively, the bit overhead for reporting the reference signal resource identifier SSBRI is

[0083] In addition, the first node can also use differential reporting to report beam quality information such as RSRP, SINR, etc. to the second node. Taking RSRP as an example, the maximum RSRP value among the multiple beam quality information to be reported can be used as the reference RSRP, and the quantization result of the maximum RSRP value can be directly reported to the second node, for example, the quantization bit length is 7 bits. Thus, the other RSRPs in the multiple beam quality information can be reported based on the differential value of the maximum RSRP, that is, the quantized result of the difference between the other RSRPs and the maximum RSRP, and the quantization bit length can be 4 bits. When using the differential reporting method, the reference signal resource identifier corresponding to the reference value (such as the above-mentioned maximum RSRP value) is presented first in the mapping order of the CSI domain. Thus, the reference signal resource reporting method based on the above-mentioned bitmap can reduce the reporting overhead of the reference signal resource identifier CRI / SSBRI.

[0084] In some embodiments, the first node may also send channel state information at multiple time points to the second node in one reporting instance.

[0085] In some embodiments, when the first node sends channel state information at multiple time points to the second node in one reporting instance, the bitmap has at least the following possible implementations:

[0086] In a possible implementation, the channel state information includes 1 bitmap, and the bitmap includes M indicator bits.

[0087] The value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer. Each indicator bit corresponds to a reference signal resource in the reference signal resource set, and each indicator bit is used to indicate whether the index information of the corresponding reference signal resource is reported.

[0088] Therefore, based on the bitmap, the first node can report beam parameter information of multiple measurement moments in one reporting instance.

[0089] In another possible implementation, the channel state information includes T bitmaps, each bitmap corresponds to a measurement moment, and the value of T is the number of measurement moments.

[0090] Each bitmap includes M indicator bits, where M is a positive integer and the value of M is equal to the number of reference signal resources included in the reference signal resource set. Furthermore, each indicator bit in the bitmap corresponds to a reference signal resource in the reference signal resource set and indicates whether the index information of the corresponding reference signal resource is reported.

[0091] In addition, each bitmap can be used to indicate the reporting status of the reference signal resource at the measurement moment corresponding to the bitmap. Thus, based on the above T bitmaps, the first node can report the beam parameter information of T measurement moments in one reporting instance.

[0092] In yet another possible implementation, the channel state information includes M bitmaps, and each bitmap corresponds to a reference signal resource in a reference signal resource set.

[0093] The value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer. Each bitmap includes T indicator bits, where the value of T is the number of measurement moments. Each indicator bit corresponds to a measurement moment and is used to indicate whether the index information of the reference signal resource corresponding to the bitmap at the corresponding measurement moment is reported.

[0094] In addition, each bitmap can be used to represent the reporting status of the same reference signal resource at different measurement moments. Therefore, based on the bitmap, the first node can report beam parameter information of multiple measurement moments in one reporting instance.

[0095] In yet another possible implementation, the channel state information includes 1 bitmap, and the bitmap includes M*T indicator bits.

[0096] The value of M is equal to the number of reference signal resources included in the reference signal resource set. M is a positive integer, and the value of T is the number of measurement moments. Each indicator bit corresponds to a measurement moment and a reference signal resource in the reference signal resource set. The indicator bit is used to indicate whether the index information of the reference signal resource at the corresponding measurement moment is reported.

[0097] In some embodiments, K consecutive indicator bits in the bitmap correspond to the same measurement time. Alternatively, P consecutive indicator bits correspond to the same reference signal resource. The value of K is determined based on M, and the value of P is determined based on T.

[0098] In one example, as shown in FIG4A , the first node may first traverse different reference signal resources at the same time and then traverse different time in a preset value order to determine the value of the bitmap.

[0099] In another example, as shown in FIG4B , the first node may first traverse different moments of the same reference signal resource and then traverse different reference signal resources in a preset value order to determine the value of the bitmap.

[0100] In some embodiments, the channel state information also includes at least one of the following: the number of target reference signal resources sent at each measurement moment, the number N of target reference signal resources, where N is a positive integer, the channel quality information corresponding to each target reference signal resource, and the identifier of the reference signal resource with the largest channel quality information.

[0101] The number of target reference signal resources sent at each measurement time:

[0102] For example, the number of target signal resources sent at each measurement moment can be expressed as N t , N t is a positive integer. t = 1, 2, ... T, where T is the number of measurement moments. In some embodiments, N t It can be determined by the first node or the second node.

[0103] In one example, the first node may also send N to the second node. t For example, the first node itself can determine N t The value of N t The value is sent to the second node.

[0104] In another example, the first node does not send N to the second node. t For example, the second node can configure N for the first node. t Therefore, the first node does not need to send N to the second node. t The value of .

[0105] Furthermore, in this embodiment, Furthermore, for a detailed description of the number N of target reference signal resources and the channel quality information corresponding to each target reference signal resource, reference can be made to the corresponding content above, which will not be repeated here.

[0106] Identifier of the reference signal resource with the maximum channel quality information:

[0107] In some embodiments, when the first node reports channel quality parameters using a differential method, it is necessary to additionally indicate the beam position corresponding to the maximum beam quality information, that is, the identifier of the reference signal resource with the maximum channel quality information. Exemplarily, the identifier of the reference signal resource with the maximum channel quality information is used to identify the reference signal resource with the maximum channel quality information from a reference signal resource set. Alternatively, the identifier of the reference signal resource with the maximum channel quality information is used to identify the reference signal resource with the maximum channel quality information from N target reference signal resources.

[0108] In some embodiments, the channel state information also includes: the absolute value of the channel quality information corresponding to the first target reference signal resource, and the differential channel quality information value of the channel quality information corresponding to other target reference signal resources relative to the channel quality information corresponding to the first target reference signal resource.

[0109] Taking RSRP as an example, only one reference RSRP is selected in a reporting instance for absolute value reporting, and the other RSRPs are differentially reported. The strongest beam position indicator, that is, the reference signal resource with the largest channel quality information, occupies a bit length of or Alternatively, the reference signal resource and the measurement time corresponding to the identifier of the reference signal resource with the largest channel quality information may be indicated respectively, and the occupied bit length is or Wherein, Np represents the total number of reference signal resources reported at the measurement moment where the identifier of the reference signal resource with the maximum channel quality information is located.

[0110] In some embodiments, the channel state information further includes: an absolute value of maximum channel quality information at each measurement moment and one or more differential channel quality information values. For any measurement moment, the one or more differential channel quality information values ​​at the measurement moment include: in addition to the target reference signal resource corresponding to the maximum channel quality information at the measurement moment, differential channel quality information values ​​obtained by calculating channel quality information corresponding to other target reference signal resources transmitted at the measurement moment relative to the maximum channel quality information at the measurement moment.

[0111] Taking RSRP as an example, at each measurement moment in a reporting instance, a maximum RSRP is selected for absolute value reporting. Other RSRPs at the same measurement moment are differentially reported with this maximum RSRP as a reference. At this time, there are a total of T strongest beam positions, and the bit length occupied by the identifier of each reference signal resource with the largest channel quality information is or t=1,2,...T。

[0112] For example, as shown in Figure 5, the number of reference signal resources in the reference signal resource set configured for channel measurement is M = 8, the measurement time is T = 2, the total number of reported reference signal resources is N = 8, and the solid circle represents the reference information resources that need to be reported. The number of reference signal resources reported at each measurement time is N1 = N2 = 4, and the reference signal resource with the largest channel quality information is reference signal resource 51. The content that the first node needs to report to the second node includes: a bitmap of '01010110 00110110' with a bit length of 16, the identifier of the reference signal resource with the largest channel quality information, '0110' (i.e., the first time and the reference signal resource identifier CRI is 6), or '011' (i.e., the fourth reference signal resource among the eight reported reference signal resources), and the beam quality information RSRP corresponding to the eight reported reference signal resources.

[0113] It should be noted that in the artificial intelligence-based beam management method, the beam prediction model used can predict beam measurement results for multiple future moments. Compared with the traditional beam scanning method, it can reduce reference signal resource overhead and measurement power consumption. For example, for the beam prediction model deployed on the first node side, the first node can directly predict beam parameter information for one or more future moments based on the measurement results of one or more historical moments. The number of future moments reported can be determined based on the length of the prediction window. As shown in Figure 6, the length of the prediction window can be 3. Alternatively, for the beam prediction model deployed on the second node side, the first node can send measurement results of one or more historical moments to the second node in a reporting instance. The number of historical moments reported can be determined based on the length of a preset measurement window. Thus, the beam prediction model deployed on the second node can predict beam parameter information for one or more future moments based on the measurement results sent by the first node. However, currently, it is generally supported that the first node reports the measurement result of one moment or the average measurement result obtained by averaging the measurement results of multiple past historical moments.

[0114] Therefore, based on the aforementioned bitmap reporting method, the first node can report beam parameter information for multiple time instants in a single reporting instance. For example, the reference signal resource identifier and / or beam quality information for one or more past time instants can be reported without averaging the beam quality information for multiple time instants. Alternatively, the reference signal resource identifier and / or beam quality information for one or more future time instants can be reported without averaging the beam quality information for multiple time instants.

[0115] S102: Send channel state information to the second node.

[0116] In some embodiments, indication information sent by the second node may also be received, and the target sending mode may be determined based on the indication information.

[0117] The indication information is used to determine a target transmission mode from multiple transmission modes of the channel state information. In some embodiments, the multiple reporting modes include at least a bitmap-based reporting mode and a non-bitmap-based reporting mode.

[0118] Exemplarily, the number N of target reference signal resources is configured by the second node for the first node. When there are R reporting methods, the second node may select one of the R reporting methods based on the capability or scheduling of the first node and indicate it to the first node, i.e., send the above-mentioned indication information to the first node.

[0119] In some embodiments, the first node may further determine a transmission overhead corresponding to each of multiple channel state information transmission modes, select a transmission mode with the lowest transmission overhead from the multiple channel state information transmission modes as a target transmission mode, and send an identifier of the target transmission mode to the second node.

[0120] Exemplarily, the value of the number N of target reference signal resources is determined autonomously by the first node. When reporting channel state information to the second node, the first node may only report beams whose beam quality information (e.g., RSRP / SINR) is greater than a preset threshold. In this case, the value of N may vary at different times. Thus, when there are R reporting methods, the first node may select one of the R reporting methods and indicate the identifier of the selected reporting method (e.g., index r) to the second node.

[0121] In addition, the target transmission mode selected by the first node can be a transmission mode with the lowest transmission overhead selected from multiple transmission modes. The bit overhead of each reporting mode for reporting the reference signal resource identifier CRI / SSBRI is f1(M,N), f2(M,N),...f R (M,N), the target sending method’s overhead satisfies f r (M,N)=min{f1(M,N),f2(M,N),...f R (M,N)}.

[0122] In some embodiments, the multiple reporting methods include at least a bitmap-based reporting method and a non-bitmap-based reporting method.

[0123] In one example, when condition 1 is met, for example, In this case, the first node may select a bitmap-based reporting method.

[0124] In another example, when condition 2 is met, for example, The first node may select a reporting method based on CRI / SSBRI.

[0125] It should be noted that, in general, in a non-bitmap-based reporting method, the bit overhead caused by reporting the reference signal resource identifier CRI / SSBRI is Where M represents the number of reference signal resources included in the configured reference signal resource set, and N represents the number of reported reference signal resources. In the bitmap-based reporting method, the minimum bit overhead required for reporting the bitmap and the identifier of the reference signal resource with the largest channel quality information can be As can be seen, different values ​​of M and N, as well as the capabilities of the first node, will affect the required reporting overhead. Therefore, a target transmission method can be flexibly selected from multiple channel state information transmission methods to report channel state information, further reducing the channel state information reporting overhead.

[0126] In some embodiments, the first node may also receive first information sent by the second node.

[0127] The first information is used to indicate configuration parameters corresponding to the reference signal resource set.

[0128] In some embodiments, the above-mentioned configuration parameters include at least one of the following: transmission configuration indication TCI status, quasi-co-location relationship QCL information, power control parameters, scrambling identifier, partial bandwidth BWP identifier, and resource type.

[0129] In one example, the second node can configure the TCI state or QCL information at the resource set level for the first node, including a QCL type A relationship, a QCL type B relationship, a QCL type C relationship, or a QCL type D relationship. That is, the same reference signal resource set has only one TCI state or QCL information as an indication, and all reference signal resources in the resource set have the same TCI state or the same QCL information. For example, the QCL type D relationship indicates the receiving beam when the first node performs measurement, so that the measurement as in Example 1 in Figure 7 can be achieved based on the TCI state or QCL information at the resource set level.

[0130] It should be noted that in this embodiment, TCI status or QCL information at the resource set level can be configured for the first node. Compared with the general configuration, activation, or triggering of a reference signal resource set, in which the TCI status or QCL information (including the QCL source signal and QCL type) of each reference signal resource in the configured reference signal resource set is carried in the RRC / MAC CE / DCI signaling, this can reduce signaling overhead.

[0131] In some embodiments, the first node may also receive second information sent by the second node.

[0132] The second information is used to configure the first node to report channel quality information obtained by measuring the same spatial relationship or spatial reception parameters.

[0133] Exemplarily, the second node can instruct the first node to report the beam quality information obtained by measuring the same receiving beam to the second node for the measured reference signal resource set, thereby realizing the reporting as shown in Example 1 in Figure 7, wherein the beam quality information obtained by measuring the same receiving beam is used for the reference signal resource set configured for channel measurement.

[0134] In some embodiments, the first node may also receive third information sent by the second node.

[0135] The third information is used to configure the first node to report the channel quality information obtained by measuring the same spatial relationship or spatial reception parameter, and the spatial relationship or spatial reception parameter corresponds to the maximum channel quality information in the measurement results.

[0136] Exemplarily, the second node may instruct the first node to report to the second node the beam quality information obtained by measuring the same receiving beam for the measured reference signal resource set, and the receiving beam corresponds to the maximum beam quality information in the measurement results of all transmitting and receiving beam pairs.

[0137] In some embodiments, the first node may also receive fourth information sent by the second node.

[0138] The fourth information is used to instruct the first node to report the maximum channel quality information corresponding to each reference signal resource.

[0139] Exemplarily, the second node can instruct the first node to report the maximum beam quality information corresponding to each reference signal resource to the second node for the measured reference signal resource set, that is, after the first node uses multiple receiving beams to measure the same reference signal resource, it can report the maximum beam quality information therein, thereby realizing the reporting as shown in Example 2 in Figure 7, wherein, for each reference signal resource in the reference signal resource set, the corresponding optimal receiving beam (i.e., the one with the maximum beam quality information) is used for measurement and reporting.

[0140] In some embodiments, the first node may further receive fifth information sent by the second node, where the fifth information is used to instruct the first node to report the channel quality information for the same reference signal resource only once.

[0141] It should be noted that in this embodiment, the indication information at the resource set level can be configured to reduce the signaling overhead. At the same time, in the reporting configuration, the receiving beam hypothesis used by the first node when reporting the beam parameter information is indicated, thereby achieving the consistency of the receiving beam for model training and inference.

[0142] Based on the technical solution provided by the present invention, when the number of beams that need to be reported is large, a bitmap-based measurement indication and reporting method can be used for reporting. In this way, the method can use a bitmap to indicate the beams that need to be reported, and there is no need to report all beam information, thereby reducing the overhead of channel information report transmission.

[0143] In some embodiments, the present disclosure further provides a method for receiving channel state information, which is applied to a second node. As shown in FIG8 , the method includes the following steps:

[0144] S201. Send a reference signal resource to a first node.

[0145] S202: Receive channel state information sent by the first node, where the channel state information includes a bitmap for indicating index information of a target reference signal resource.

[0146] In some embodiments, the channel state information includes a bitmap for indicating index information of the target reference signal resource.

[0147] The length of the bitmap can be expressed as M, where the value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer. In addition, the character on the indicator bit of the bitmap can be used to indicate whether the reference signal resource corresponding to the indicator bit is reported. For example, if the character on the indicator bit is "0", it means that the reference signal resource corresponding to the indicator bit is not reported. Conversely, if the character on the indicator bit is "1", it means that the reference signal resource corresponding to the indicator bit is reported.

[0148] In some embodiments, the channel state information further includes at least one of the following: the number N of target reference signal resources, where N is a positive integer; channel quality information corresponding to each target reference signal resource; and an identifier of a reference signal resource with the maximum channel quality information.

[0149] In some embodiments, the identifier of the reference signal resource with the maximum channel quality information is used to identify the reference signal resource with the maximum channel quality information from a reference signal resource set. Alternatively, the identifier of the reference signal resource with the maximum channel quality information is used to identify the reference signal resource with the maximum channel quality information from N target reference signal resources.

[0150] In some embodiments, the channel quality information includes at least one of the following: reference signal received power RSRP, signal to interference plus noise ratio SINR, reference signal received quality RSRQ, channel quality indicator CQI, confidence parameter, probability parameter.

[0151] In some embodiments, the second node may also receive channel state information at multiple time points sent by the first node in one reporting instance.

[0152] In one possible implementation, the channel state information includes a bitmap, which includes M indicator bits, where the value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer; each indicator bit corresponds to a reference signal resource in the reference signal resource set, and each indicator bit is used to indicate whether the index information of the corresponding reference signal resource is reported.

[0153] In another possible implementation, the channel state information includes M bitmaps, each bitmap corresponds to a reference signal resource in a reference signal resource set, the value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer; each bitmap includes T indicator bits, the value of T is the number of measurement moments, each indicator bit corresponds to a measurement moment, and the indicator bit is used to indicate whether the index information of the reference signal resource corresponding to the bitmap at the corresponding measurement moment is reported.

[0154] In another possible implementation, the channel state information includes a bitmap, the bitmap includes M*T indicator bits, the value of M is equal to the number of reference signal resources included in the reference signal resource set, M is a positive integer, and the value of T is the number of measurement moments; each indicator bit corresponds to a measurement moment and corresponds to a reference signal resource in the reference signal resource set; the indicator bit is used to indicate whether the index information of the reference signal resource at the corresponding measurement moment is reported.

[0155] In another possible implementation, the channel state information includes a bitmap, the bitmap includes M*T indicator bits, the value of M is equal to the number of reference signal resources included in the reference signal resource set, M is a positive integer, and the value of T is the number of measurement moments; each indicator bit corresponds to a measurement moment and corresponds to a reference signal resource in the reference signal resource set; the indicator bit is used to indicate whether the index information of the reference signal resource at the corresponding measurement moment is reported.

[0156] In some embodiments, K consecutive indicator bits in the bitmap correspond to the same measurement time; or, P consecutive indicator bits correspond to the same reference signal resource; wherein the value of K is determined based on M, and the value of P is determined based on T.

[0157] In some embodiments, the channel state information also includes at least one of the following: the number of target reference signal resources sent at each measurement moment, the number N of target reference signal resources, the channel quality information corresponding to each target reference signal resource, and the identifier of the reference signal resource with the largest channel quality information.

[0158] In some embodiments, the channel state information also includes: the absolute value of the channel quality information corresponding to the first target reference signal resource, and the differential channel quality information value of the channel quality information corresponding to other target reference signal resources relative to the channel quality information corresponding to the first target reference signal resource.

[0159] In some embodiments, the channel state information also includes: the absolute value of the maximum channel quality information at each measurement moment and one or more differential channel quality information values; for any measurement moment, the one or more differential channel quality information values ​​at the measurement moment include: in addition to the target reference signal resource corresponding to the maximum channel quality information at the measurement moment, the differential channel quality information value obtained by the channel quality information corresponding to other target reference signal resources sent at the measurement moment relative to the maximum channel quality information at the measurement moment.

[0160] In some embodiments, the second node may further send indication information to the first node, where the indication information is used to determine a target sending mode from multiple sending modes of the channel state information.

[0161] In some embodiments, the second node may further receive an identifier of a target transmission mode sent by the first node, where the target transmission mode is one of multiple transmission modes of the channel state information.

[0162] In some embodiments, the multiple sending modes include at least a bitmap-based sending mode and a non-bitmap-based sending mode.

[0163] In some embodiments, the second node may also send first information to the first node, where the first information is used to configure configuration parameters corresponding to the reference signal resource set, and the configuration parameters include at least one of the following: transmission configuration indication TCI status, quasi-co-site relationship QCL information, power control parameters, scrambling identifier, partial bandwidth BWP identifier, and resource type.

[0164] In some embodiments, the second node may further send second information to the first node, where the second information is used to configure the first node to report channel quality information obtained by measuring the same spatial relationship or spatial reception parameters.

[0165] In some embodiments, the second node may also send third information to the first node, where the third information is used to configure the first node to report channel quality information obtained by measuring the same spatial relationship or spatial reception parameter, where the spatial relationship or spatial reception parameter corresponds to the maximum channel quality information in the measurement results.

[0166] In some embodiments, the second node may further send fourth information to the first node, where the fourth information is used to instruct the first node to report maximum channel quality information corresponding to each reference signal resource.

[0167] In some embodiments, the second node may further send fifth information to the first node, where the fifth information is used to instruct the first node to report the channel quality information for the same reference signal resource only once.

[0168] Based on the technical solution provided in the present disclosure, when the number of beams that need to be reported is large, a bitmap-based measurement indication and reporting method can be used to effectively indicate the beams that need to be reported. In this way, the overhead of transmitting the channel state information report can also be reduced.

[0169] The above mainly introduces the solution provided by the present disclosure from the perspective of the interaction between each node. It is understandable that, in order to implement the above functions, each node includes a hardware structure and / or software module corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiments disclosed herein, the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present disclosure.

[0170] FIG9 is a schematic diagram showing the composition of a communication device provided by an embodiment of the present disclosure, which is applied to a first node. As shown in FIG9 , the communication device 90 includes a processing module 901 , a sending module 902 , and a receiving module 903 .

[0171] In some embodiments, the processing module 901 is configured to obtain channel state information based on measurement of a reference signal resource sent by the second node. The sending module 902 is configured to send the channel state information to the second node, where the channel state information includes a bitmap for indicating index information of a target reference signal resource.

[0172] In some embodiments, the channel state information includes a bitmap, the bitmap includes M indicator bits, the value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer; each indicator bit corresponds to a reference signal resource in the reference signal resource set, and each indicator bit is used to indicate whether the index information of the corresponding reference signal resource is reported.

[0173] In some embodiments, the channel state information includes T bitmaps, each bitmap corresponds to a measurement moment, and the value of T is the number of measurement moments; each bitmap includes M indicator bits, the value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer; each indicator bit in the bitmap corresponds to a reference signal resource in the reference signal resource set, and each indicator bit in the bitmap is used to indicate whether the index information of the corresponding reference signal resource is reported.

[0174] In some embodiments, the channel state information includes M bitmaps, each bitmap corresponds to a reference signal resource in a reference signal resource set, the value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer; each bitmap includes T indicator bits, the value of T is the number of measurement moments, each indicator bit corresponds to a measurement moment, and the indicator bit is used to indicate whether the index information of the reference signal resource corresponding to the bitmap at the corresponding measurement moment is reported.

[0175] In some embodiments, the channel state information includes a bitmap, the bitmap includes M*T indicator bits, the value of M is equal to the number of reference signal resources included in the reference signal resource set, M is a positive integer, and the value of T is the number of measurement moments; each indicator bit corresponds to a measurement moment and corresponds to a reference signal resource in the reference signal resource set; the indicator bit is used to indicate whether the index information of the reference signal resource at the corresponding measurement moment is reported.

[0176] In some embodiments, K consecutive indicator bits in the bitmap correspond to the same measurement time; or, P consecutive indicator bits correspond to the same reference signal resource; wherein the value of K is determined based on M, and the value of P is determined based on T.

[0177] In some embodiments, the channel state information also includes at least one of the following: the number of target reference signal resources sent at each measurement moment, the number N of target reference signal resources, the channel quality information corresponding to each target reference signal resource, and the identifier of the reference signal resource with the largest channel quality information.

[0178] In some embodiments, the identifier of the reference signal resource with the maximum channel quality information is used to identify the reference signal resource with the maximum channel quality information from a reference signal resource set. Alternatively, the identifier of the reference signal resource with the maximum channel quality information is used to identify the reference signal resource with the maximum channel quality information from N target reference signal resources.

[0179] In some embodiments, the channel quality information includes at least one of the following: reference signal received power RSRP, signal to interference plus noise ratio SINR, reference signal received quality RSRQ, channel quality indicator CQI, confidence parameter, probability parameter.

[0180] In some embodiments, the channel state information also includes: the absolute value of the channel quality information corresponding to the first target reference signal resource, and the differential channel quality information value of the channel quality information corresponding to other target reference signal resources relative to the channel quality information corresponding to the first target reference signal resource.

[0181] In some embodiments, the channel state information also includes: the absolute value of the maximum channel quality information at each measurement moment and one or more differential channel quality information values; for any measurement moment, the one or more differential channel quality information values ​​at the measurement moment include: in addition to the target reference signal resource corresponding to the maximum channel quality information at the measurement moment, the differential channel quality information value obtained by the channel quality information corresponding to other target reference signal resources sent at the measurement moment relative to the maximum channel quality information at the measurement moment.

[0182] In some embodiments, the receiving module 903 is configured to receive indication information sent by the second node, the indication information being used to determine a target transmission mode from multiple transmission modes of the channel state information. The processing module 901 is further configured to determine the target transmission mode based on the indication information.

[0183] In some embodiments, processing module 901 is further configured to determine a transmission overhead corresponding to each of multiple channel state information transmission modes, and select a transmission mode with the lowest transmission overhead from the multiple channel state information transmission modes as a target transmission mode. Transmission module 902 is further configured to transmit an identifier of the target transmission mode to the second node.

[0184] In some embodiments, the multiple reporting methods include at least a bitmap-based reporting method and a non-bitmap-based reporting method.

[0185] In some embodiments, the receiving module 903 is also used to receive first information sent by the second node, where the first information is used to indicate configuration parameters corresponding to the reference signal resource set, and the configuration parameters include at least one of the following: transmission configuration indication TCI status, quasi-co-site relationship QCL information, power control parameters, scrambling identifier, partial bandwidth BWP identifier, and resource type.

[0186] In some embodiments, the receiving module 903 is further configured to receive second information sent by the second node, where the second information is used to configure the first node to report channel quality information obtained by measuring the same spatial relationship or spatial reception parameters.

[0187] In some embodiments, the receiving module 903 is also used to receive third information sent by the second node, and the third information is used to configure the first node to report the channel quality information obtained by measuring the same spatial relationship or spatial reception parameter, and the spatial relationship or spatial reception parameter corresponds to the maximum channel quality information in the measurement result.

[0188] In some embodiments, the receiving module 903 is further configured to receive fourth information sent by the second node, where the fourth information is configured to instruct the first node to report maximum channel quality information corresponding to each reference signal resource.

[0189] In some embodiments, the receiving module 903 is further configured to receive fifth information sent by the second node, where the fifth information is configured to instruct the first node to report the channel quality information for the same reference signal resource only once.

[0190] For a more detailed description of the above-mentioned processing module 901, sending module 902 and receiving module 903, as well as a more detailed description of each technical feature and a description of the beneficial effects, please refer to the above-mentioned corresponding method embodiment part, which will not be repeated here.

[0191] FIG10 is a schematic diagram showing the composition of a communication device provided by an embodiment of the present disclosure, which is applied to a second node. As shown in FIG10 , the communication device 100 includes a sending module 1001 and a receiving module 1002 .

[0192] In some embodiments, the sending module 1001 is configured to send a reference signal resource to a first node. The receiving module 1002 is configured to receive channel state information sent by the first node, where the channel state information includes a bitmap for indicating index information of a target reference signal resource.

[0193] In some embodiments, the channel state information includes a bitmap, the bitmap includes M indicator bits, the value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer; each indicator bit corresponds to a reference signal resource in the reference signal resource set, and each indicator bit is used to indicate whether the index information of the corresponding reference signal resource is reported.

[0194] In some embodiments, the channel state information includes M bitmaps, each bitmap corresponds to a reference signal resource in a reference signal resource set, the value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer; each bitmap includes T indicator bits, the value of T is the number of measurement moments, each indicator bit corresponds to a measurement moment, and the indicator bit is used to indicate whether the index information of the reference signal resource corresponding to the bitmap at the corresponding measurement moment is reported.

[0195] In some embodiments, the channel state information includes a bitmap, the bitmap includes M*T indicator bits, the value of M is equal to the number of reference signal resources included in the reference signal resource set, M is a positive integer, and the value of T is the number of measurement moments; each indicator bit corresponds to a measurement moment and corresponds to a reference signal resource in the reference signal resource set; the indicator bit is used to indicate whether the index information of the reference signal resource at the corresponding measurement moment is reported.

[0196] In some embodiments, the channel state information includes a bitmap, the bitmap includes M*T indicator bits, the value of M is equal to the number of reference signal resources included in the reference signal resource set, M is a positive integer, and the value of T is the number of measurement moments; each indicator bit corresponds to a measurement moment and corresponds to a reference signal resource in the reference signal resource set; the indicator bit is used to indicate whether the index information of the reference signal resource at the corresponding measurement moment is reported.

[0197] In some embodiments, K consecutive indicator bits in the bitmap correspond to the same measurement time; or, P consecutive indicator bits correspond to the same reference signal resource; wherein the value of K is determined based on M, and the value of P is determined based on T.

[0198] In some embodiments, the channel state information also includes at least one of the following: the number of target reference signal resources sent at each measurement moment, the number N of target reference signal resources, the channel quality information corresponding to each target reference signal resource, and the identifier of the reference signal resource with the largest channel quality information.

[0199] In some embodiments, the identifier of the reference signal resource with the maximum channel quality information is used to identify the reference signal resource with the maximum channel quality information from a reference signal resource set. Alternatively, the identifier of the reference signal resource with the maximum channel quality information is used to identify the reference signal resource with the maximum channel quality information from N target reference signal resources.

[0200] In some embodiments, the channel quality information includes at least one of the following: reference signal received power RSRP, signal to interference plus noise ratio SINR, reference signal received quality RSRQ, channel quality indicator CQI, confidence parameter, probability parameter.

[0201] In some embodiments, the channel state information also includes: the absolute value of the channel quality information corresponding to the first target reference signal resource, and the differential channel quality information value of the channel quality information corresponding to other target reference signal resources relative to the channel quality information corresponding to the first target reference signal resource.

[0202] In some embodiments, the channel state information also includes: the absolute value of the maximum channel quality information at each measurement moment and one or more differential channel quality information values; for any measurement moment, the one or more differential channel quality information values ​​at the measurement moment include: in addition to the target reference signal resource corresponding to the maximum channel quality information at the measurement moment, the differential channel quality information value obtained by the channel quality information corresponding to other target reference signal resources sent at the measurement moment relative to the maximum channel quality information at the measurement moment.

[0203] In some embodiments, the sending module 1001 is further configured to send indication information to the first node, where the indication information is used to determine a target sending mode from among multiple sending modes of the channel state information.

[0204] In some embodiments, the receiving module 1002 is further configured to receive an identifier of a target transmission mode sent by the first node, where the target transmission mode is one of multiple transmission modes of the channel state information.

[0205] In some embodiments, the multiple sending modes include at least a bitmap-based sending mode and a non-bitmap-based sending mode.

[0206] In some embodiments, the sending module 1001 is also used to send first information to the first node, where the first information is used to configure configuration parameters corresponding to the reference signal resource set, and the configuration parameters include at least one of the following: transmission configuration indication TCI status, quasi-co-site relationship QCL information, power control parameters, scrambling identifier, partial bandwidth BWP identifier, and resource type.

[0207] In some embodiments, the sending module 1001 is further used to send second information to the first node, where the second information is used to configure the first node to report channel quality information obtained by measuring the same spatial relationship or spatial reception parameters.

[0208] In some embodiments, the sending module 1001 is also used to send third information to the first node, and the third information is used to configure the first node to report the channel quality information obtained by measuring the same spatial relationship or spatial reception parameter, and the spatial relationship or spatial reception parameter corresponds to the maximum channel quality information in the measurement results.

[0209] In some embodiments, the sending module 1001 is further configured to send fourth information to the first node, where the fourth information is configured to instruct the first node to report maximum channel quality information corresponding to each reference signal resource.

[0210] In some embodiments, the sending module 1001 is further configured to send fifth information to the first node, where the fifth information is configured to instruct the first node to report the channel quality information for the same reference signal resource only once.

[0211] For a more detailed description of the sending module 1001 and the receiving module 1002, as well as a more detailed description of each technical feature and a description of the beneficial effects, etc., please refer to the corresponding method embodiment section above and will not be repeated here.

[0212] It should be noted that the modules in FIG9 or FIG10 may also be referred to as units. For example, the sending module may be referred to as a sending unit. In addition, in the embodiments shown in FIG9 or FIG10 , the names of the modules may not be those shown in the figures. For example, the sending module may be referred to as a communication module, and the receiving module may be referred to as a communication module.

[0213] If the various units or modules in Figure 9 or Figure 10 are implemented in the form of software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present disclosure is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the various embodiments of the present disclosure. The storage medium for storing computer software products includes various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0214] In the case of implementing the functions of the above-mentioned integrated modules in hardware, an embodiment of the present disclosure provides a schematic structural diagram of a communication device, which may be the above-mentioned communication device 90 or communication device 100. As shown in Figure 11, the communication device 110 includes: a processor 1102, a communication interface 1103, and a bus 1104. In some embodiments of the present disclosure, the communication device 110 may also include a memory 1101.

[0215] Processor 1102 can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the contents of this disclosure. Processor 1102 can be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof, and can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the contents of this disclosure. Processor 1102 can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0216] The communication interface 1103 is used to connect to other devices via a communication network, such as Ethernet, wireless access network, or wireless local area network (WLAN).

[0217] The memory 1101 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0218] As a possible implementation, the memory 1101 may exist independently of the processor 1102. The memory 1101 may be connected to the processor 1102 via a bus 1104 to store instructions or program codes. When the processor 1102 calls and executes the instructions or program codes stored in the memory 1101, the method provided in the embodiment of the present disclosure can be implemented.

[0219] In another possible implementation, the memory 1101 may also be integrated with the processor 1102 .

[0220] Bus 1104 can be an Extended Industry Standard Architecture (EISA) bus, etc. Bus 1104 can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, FIG11 shows only one thick line, but this does not mean that there is only one bus or only one type of bus.

[0221] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the equipment or device is divided into different functional modules to complete all or part of the functions described above.

[0222] The embodiments of the present disclosure also provide a computer-readable storage medium (including a non-transitory computer-readable storage medium). All or part of the processes in the above-mentioned method embodiments can be completed by computer instructions to the relevant hardware, and the computer instructions can be stored in the above-mentioned computer-readable storage medium. When the computer instructions are executed, they may include the processes of the above-mentioned method embodiments. The computer-readable storage medium can be an internal storage unit or memory of any of the aforementioned embodiments. The above-mentioned computer-readable storage medium can also be an external storage device of the above-mentioned device or apparatus, such as a plug-in hard disk, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, a flash card (flash card), etc. equipped on the above-mentioned device or apparatus. Furthermore, the above-mentioned computer-readable storage medium can also include both the internal storage unit and the external storage device of the above-mentioned device or apparatus. The above-mentioned computer-readable storage medium is used to store the above-mentioned computer program and other programs and data required by the above-mentioned device or apparatus. The above-mentioned computer-readable storage medium can also be used to temporarily store data that has been output or is to be output.

[0223] The embodiments of the present disclosure further provide a computer program product, which includes a computer program. When the computer program is run on a computer, the computer is enabled to execute any one of the methods provided in the above embodiments.

[0224] Although the present disclosure is described herein in conjunction with various embodiments, in the process of implementing the disclosure for which protection is sought, those skilled in the art may understand and implement other variations of the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple components. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0225] Although the present disclosure has been described with reference to certain features and embodiments thereof, it will be apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present disclosure. Accordingly, this specification and the drawings are merely illustrative of the present disclosure as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present disclosure. Obviously, those skilled in the art may make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, the present disclosure is intended to encompass such modifications and variations as would fall within the scope of the claims of the present disclosure and their equivalents.

[0226] The above is only a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or replacements within the technical scope disclosed in the present disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A method for sending channel state information, applied to a first node, the method comprising: Obtaining channel state information based on measurement of a reference signal resource sent by the second node; The channel state information is sent to the second node, where the channel state information includes a bitmap for indicating index information of a target reference signal resource.

2. The method according to claim 1, wherein: The channel state information includes a bitmap, which includes M indicator bits, where the value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer; each of the M indicator bits corresponds to a reference signal resource in the reference signal resource set, and each indicator bit is used to indicate whether the index information of the corresponding reference signal resource is reported.

3. The method according to claim 1, wherein: The channel state information includes T bitmaps, each bitmap in the T bitmaps corresponds to a measurement time, and the value of T is the number of measurement times; each bitmap includes M indicator bits, the value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer; each of the M indicator bits in each bitmap corresponds to a reference signal resource in the reference signal resource set, and each indicator bit in each bitmap is used to indicate whether the index information of the corresponding reference signal resource is reported.

4. The method according to claim 1, wherein: The channel state information includes M bitmaps, each of the M bitmaps corresponds to a reference signal resource in a reference signal resource set, the value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer; each of the bitmaps includes T indicator bits, the value of T is the number of measurement moments, each of the T indicator bits corresponds to a measurement moment, and each indicator bit is used to indicate whether the index information of the reference signal resource of the corresponding bitmap at the corresponding measurement moment is reported.

5. The method according to claim 1, wherein: The channel state information includes a bitmap, which includes M*T indicator bits, where the value of M is equal to the number of reference signal resources included in the reference signal resource set, M is a positive integer, and the value of T is the number of measurement moments; each of the M*T indicator bits corresponds to a measurement moment and corresponds to a reference signal resource in the reference signal resource set; each indicator bit is used to indicate whether the index information of the reference signal resource at the corresponding measurement moment is reported.

6. The method according to claim 5, wherein: K consecutive indicator bits in the bitmap correspond to the same measurement time; or, P consecutive indicator bits correspond to the same reference signal resource; wherein the value of K is determined based on M, and the value of P is determined based on T.

7. The method according to any one of claims 2 to 5, wherein: The channel state information also includes at least one of the following: The number of target reference signal resources sent at each measurement time; The number of target reference signal resources N, where N is a positive integer; Channel quality information corresponding to each target reference signal resource; The identifier of the reference signal resource with the maximum channel quality information.

8. The method according to claim 7, wherein: The identifier of the reference signal resource with the maximum channel quality information is used to identify the reference signal resource with the maximum channel quality information from the reference signal resource set; or The identifier of the reference signal resource with the maximum channel quality information is used to identify the reference signal resource with the maximum channel quality information from the N target reference signal resources.

9. The method according to claim 7, wherein: The channel quality information includes at least one of the following: reference signal received power RSRP, signal to interference plus noise ratio SINR, reference signal received quality RSRQ, channel quality indication CQI, confidence parameter, probability parameter.

10. The method according to claim 1, wherein: The channel state information also includes: an absolute value of the channel quality information corresponding to the first target reference signal resource, and a differential channel quality information value of the channel quality information corresponding to other target reference signal resources relative to the channel quality information corresponding to the first target reference signal resource.

11. The method according to claim 1, wherein: The channel state information also includes: an absolute value of the maximum channel quality information at each measurement moment and one or more differential channel quality information values; for any measurement moment, the one or more differential channel quality information values ​​at any measurement moment include: in addition to the target reference signal resource corresponding to the maximum channel quality information at any measurement moment, the differential channel quality information value obtained by the channel quality information corresponding to other target reference signal resources sent at any measurement moment relative to the maximum channel quality information at any measurement moment.

12. The method according to claim 1, further comprising: receiving indication information sent by the second node, where the indication information is used to determine a target sending mode from multiple sending modes of the channel state information; Based on the indication information, a target sending mode is determined.

13. The method according to claim 1, further comprising: Determine a transmission overhead corresponding to each of multiple transmission modes of the channel state information; Selecting a transmission mode with the smallest transmission overhead from multiple transmission modes of the channel state information as a target transmission mode; An identifier of the target sending mode is sent to the second node.

14. The method according to claim 12 or 13, wherein: The multiple sending modes include at least a bitmap-based sending mode and a non-bitmap-based sending mode.

15. The method according to claim 1, further comprising: Receive first information sent by the second node, where the first information is used to indicate configuration parameters corresponding to the reference signal resource set, and the configuration parameters include at least one of the following: transmission configuration indication TCI status, quasi-co-site relationship QCL information, power control parameters, scrambling identifier, partial bandwidth BWP identifier, and resource type.

16. The method according to claim 1, further comprising: Second information sent by the second node is received, where the second information is used to configure the first node to report channel quality information obtained by measuring the same spatial relationship or spatial reception parameter.

17. The method according to claim 1, further comprising: Receive third information sent by the second node, where the third information is used to configure the first node to report channel quality information obtained by measuring the same spatial relationship or spatial reception parameter, and the spatial relationship or spatial reception parameter corresponds to the maximum channel quality information in the measurement result.

18. The method of claim 1, further comprising: Receive fourth information sent by the second node, where the fourth information is used to instruct the first node to report maximum channel quality information corresponding to each reference signal resource.

19. The method of claim 1, further comprising: Fifth information sent by the second node is received, where the fifth information is used to instruct the first node to report channel quality information for the same reference signal resource only once.

20. A method for receiving channel state information, applied to a second node, the method comprising: sending a reference signal resource to the first node; Channel state information sent by the first node is received, where the channel state information includes a bitmap for indicating index information of a target reference signal resource.

21. The method according to claim 20, wherein: The channel state information includes a bitmap, which includes M indicator bits, where the value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer; each of the M indicator bits corresponds to a reference signal resource in the reference signal resource set, and each indicator bit is used to indicate whether the index information of the corresponding reference signal resource is reported.

22. The method according to claim 20, wherein: The channel state information includes M bitmaps, each of the M bitmaps corresponds to a reference signal resource in a reference signal resource set, the value of M is equal to the number of reference signal resources included in the reference signal resource set, and M is a positive integer; each of the bitmaps includes T indicator bits, the value of T is the number of measurement moments, each of the T indicator bits corresponds to a measurement moment, and each indicator bit is used to indicate whether the index information of the reference signal resource of the corresponding bitmap at the corresponding measurement moment is reported.

23. The method according to claim 20, wherein: The channel state information includes a bitmap, which includes M*T indicator bits, where the value of M is equal to the number of reference signal resources included in the reference signal resource set, M is a positive integer, and the value of T is the number of measurement moments; each indicator bit corresponds to a measurement moment and corresponds to a reference signal resource in the reference signal resource set; the indicator bit is used to indicate whether the index information of the reference signal resource at the corresponding measurement moment is reported.

24. The method according to claim 20, wherein: The channel state information includes a bitmap, which includes M*T indicator bits, where the value of M is equal to the number of reference signal resources included in the reference signal resource set, M is a positive integer, and the value of T is the number of measurement moments; each indicator bit corresponds to a measurement moment and corresponds to a reference signal resource in the reference signal resource set; the indicator bit is used to indicate whether the index information of the reference signal resource at the corresponding measurement moment is reported.

25. The method according to claim 24, wherein: K consecutive indicator bits in the bitmap correspond to the same measurement time; or, P consecutive indicator bits correspond to the same reference signal resource; wherein the value of K is determined based on M, and the value of P is determined based on T.

26. The method according to any one of claims 21 to 24, wherein: The channel state information also includes at least one of the following: The number of target reference signal resources sent at each measurement time; The number of target reference signal resources N; Channel quality information corresponding to each target reference signal resource; The identifier of the reference signal resource with the maximum channel quality information.

27. The method according to claim 26, wherein: The identifier of the reference signal resource with the maximum channel quality information is used to identify the reference signal resource with the maximum channel quality information from the reference signal resource set; or The identifier of the reference signal resource with the maximum channel quality information is used to identify the reference signal resource with the maximum channel quality information from the N target reference signal resources.

28. The method according to claim 26, wherein: The channel quality information includes at least one of the following: reference signal received power RSRP, signal to interference plus noise ratio SINR, reference signal received quality RSRQ, channel quality indication CQI, confidence parameter, probability parameter.

29. The method according to claim 20, wherein: The channel state information also includes: an absolute value of the channel quality information corresponding to the first target reference signal resource, and a differential channel quality information value of the channel quality information corresponding to other target reference signal resources relative to the channel quality information corresponding to the first target reference signal resource.

30. The method of claim 20, wherein: The channel state information also includes: an absolute value of the maximum channel quality information at each measurement moment and one or more differential channel quality information values; for any measurement moment, the one or more differential channel quality information values ​​at any measurement moment include: in addition to the target reference signal resource corresponding to the maximum channel quality information at any measurement moment, the differential channel quality information value obtained by the channel quality information corresponding to other target reference signal resources sent at any measurement moment relative to the maximum channel quality information at any measurement moment.

31. The method of claim 20, further comprising: Indication information is sent to the first node, where the indication information is used to determine a target sending mode from among multiple sending modes of the channel state information.

32. The method of claim 20, further comprising: An identifier of a target sending mode sent by the first node is received, where the target sending mode is one of multiple sending modes of the channel state information.

33. The method according to claim 31 or 32, wherein: The multiple sending modes include at least a bitmap-based sending mode and a non-bitmap-based sending mode.

34. The method of claim 20, further comprising: Send first information to the first node, where the first information is used to configure configuration parameters corresponding to the reference signal resource set, and the configuration parameters include at least one of the following: transmission configuration indication TCI status, quasi-co-site relationship QCL information, power control parameters, scrambling identifier, partial bandwidth BWP identifier, and resource type.

35. The method of claim 20, further comprising: Sending second information to the first node, where the second information is used to configure the first node to report channel quality information obtained by measuring the same spatial relationship or spatial reception parameter.

36. The method of claim 20, further comprising: Send third information to the first node, where the third information is used to configure the first node to report channel quality information obtained by measuring the same spatial relationship or spatial reception parameter, where the spatial relationship or spatial reception parameter corresponds to the maximum channel quality information in the measurement result.

37. The method of claim 20, further comprising: Sending fourth information to the first node, where the fourth information is used to instruct the first node to report maximum channel quality information corresponding to each reference signal resource.

38. The method of claim 20, further comprising: Fifth information is sent to the first node, where the fifth information is used to instruct the first node to report channel quality information for the same reference signal resource only once.

39. A communication device, comprising: Memory and processor; The memory is coupled to the processor; The memory is used to store instructions executable by the processor; When the processor executes the instructions, the method according to any one of claims 1 to 38 is performed.

40. A computer-readable storage medium, wherein: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a communication device, the communication device is caused to perform the method according to any one of claims 1 to 38.

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