A CSI reporting method and device

Abstract

This application discloses a CSI reporting method and apparatus, relating to the field of wireless communication technology. The scheme involves a user equipment (UE) receiving configuration information from a base station, including at least CSI-RS resources, CSI reporting methods, and judgment rules, to pre-configure a specific CSI reporting strategy for the UE. When the UE receives a CSI-RS signal from the base station, it calculates target CSI parameters based on the CSI-RS resources and generates a target CSI report. Subsequently, the UE autonomously decides whether to report a complete target CSI report to the base station based on the target CSI parameters and judgment rules, thereby avoiding invalid data transmission in advance, significantly reducing uplink signaling overhead, and substantially reducing the UE's RF transmit power consumption, achieving dynamic optimization of uplink resources and interference management.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to a CSI reporting method and apparatus. Background Technology

[0002] In modern wireless communication systems, to achieve the gain of Multiple-Input Multiple-Output (MIMO) technology, the base station (BS) needs to acquire downlink channel state information (CSI). The standard procedure is as follows: the base station configures and transmits a channel state information reference signal (CSI-RS); the user equipment (UE) receives the measurement, calculates and feeds back multiple CSI feedback parameters, performs CSI reporting based on the CSI measurement results, and the base station adjusts its downlink transmission accordingly.

[0003] However, the current CSI reporting mechanism has significant problems. First, the signaling overhead is too high: complex codebook designs (such as Type II codebooks) and subband reporting consume a large amount of uplink resources, which can easily crowd out service data space when the channel changes drastically, leading to limited spectrum efficiency or even link congestion. Second, UE power consumption is high: in base station-dominated mode, even if the channel environment does not change significantly or the feedback gain is minimal, the UE still needs to frequently measure and report, causing unnecessary energy consumption and reducing the terminal's battery life.

[0004] Given the above, how to solve the problem of high feedback overhead and numerous invalid measurements in the current CSI reporting mechanism, which consumes resources and increases terminal power consumption, is an urgent issue for technicians in this field. Summary of the Invention

[0005] The purpose of this application is to provide a CSI reporting method and device to solve the problems of high feedback overhead and many invalid measurements in the current CSI reporting mechanism, which consume resources and increase terminal power consumption.

[0006] To address the aforementioned technical problems, this application provides a CSI reporting method applied to user equipment, the method comprising:

[0007] Receive configuration information sent by the base station; wherein, the configuration information includes at least CSI-RS resources, CSI reporting method, and judgment rules;

[0008] When the CSI-RS signal sent by the base station is received, the target CSI parameters are calculated based on the CSI-RS resources, and a target CSI report is generated based on the target CSI parameters;

[0009] Based on the target CSI parameters and the determination rule, determine whether to report the target CSI report to the base station;

[0010] If so, the target CSI report is reported to the base station according to the CSI reporting method.

[0011] If not, then skip reporting the target CSI report to the base station.

[0012] On the one hand, it receives configuration information sent by the base station, including:

[0013] Receive the CSI-RS resources, the CSI reporting method, and the judgment threshold sent by the base station via radio resource control signaling;

[0014] The CSI reporting method includes at least a first uplink resource and a second uplink resource; the first uplink resource is used to send indication information and a corresponding CSI-RS resource identifier to the base station, and the second uplink resource is used to send the target CSI report to the base station; the reporting time of the first uplink resource is earlier than the reporting time of the second uplink resource.

[0015] On the other hand, based on the target CSI parameters and the determination rule, determining whether to report the target CSI report to the base station includes:

[0016] Determine the current CSI parameters based on the CSI-RS resources;

[0017] Determine the difference between the target CSI parameter and the current CSI parameter to determine the performance gain;

[0018] Determine whether the performance gain is greater than the determination threshold;

[0019] If so, then based on the first uplink resource, send the first indication information and the corresponding CSI-RS resource identifier; wherein, the first indication information represents reporting a complete CSI report;

[0020] The target CSI report is reported to the base station based on the second uplink resource;

[0021] If not, then based on the first uplink resource, send the second indication information and the corresponding CSI-RS resource identifier, and skip the reporting based on the second uplink resource; wherein, the second indication information indicates that the complete CSI report is skipped.

[0022] On the other hand, after receiving the CSI-RS resources, the CSI reporting method, and the determination threshold sent by the base station via radio resource control signaling, the method further includes:

[0023] When a MAC-CE or DCI indicating activation of the CSI reporting process based on the determination rule is received, the process proceeds to the step of determining whether to report the target CSI report to the base station based on the target CSI parameters and the determination rule.

[0024] When a MAC-CE indicating the deactivation of the CSI reporting process based on the determination rule is received, the target CSI report is directly reported to the base station through the second uplink resource.

[0025] On the other hand, it also includes:

[0026] The determination threshold is dynamically updated via DCI and / or MAC-CE.

[0027] To address the aforementioned technical problems, this application also provides a CSI reporting method applied to a base station, the method comprising:

[0028] Send configuration information to the user equipment; wherein, the configuration information includes at least CSI-RS resources, CSI reporting method, and judgment rules;

[0029] A CSI-RS signal is sent to the user equipment so that the user equipment can calculate the target CSI parameters based on the CSI-RS resources and generate a target CSI report based on the target CSI parameters. Based on the target CSI parameters and the determination rule, it is determined whether to report the target CSI report to the base station. If yes, the target CSI report is reported to the base station according to the CSI reporting method. If no, the reporting of the target CSI report to the base station is skipped.

[0030] On the one hand, after sending the CSI-RS signal to the user equipment, it also includes:

[0031] The system receives indication information and a corresponding CSI-RS resource identifier reported by the user equipment based on a first uplink resource; wherein the indication information includes at least a first indication information indicating that a complete CSI report is to be reported and a second indication information indicating that the reporting of a complete CSI report is skipped.

[0032] When the second instruction information is received, the second uplink resource is reassigned to other user equipment or processes, or the second uplink resource is kept in an unused state.

[0033] On the other hand, maintaining the idle state of the second uplink resource includes:

[0034] When the network is deployed as a sub-band full-duplex, the quiescent period of the second uplink resource is used to suppress self-interference on the receiving side and / or avoid receiving blockage.

[0035] On the other hand, it also includes:

[0036] Send target signaling to the user equipment via MAC-CE;

[0037] The target signaling characterizes the activation or deactivation of the CSI reporting process based on the determination rule.

[0038] To address the aforementioned technical problems, this application also provides a CSI reporting device, comprising:

[0039] Memory, used to store computer programs;

[0040] A processor for implementing the steps of the CSI reporting method described above when executing the computer program.

[0041] The CSI reporting method provided in this application involves the user equipment receiving configuration information sent by the base station, which includes at least CSI-RS resources, CSI reporting methods, and judgment rules, to pre-configure specific CSI reporting strategies for the user equipment. When the user equipment receives a CSI-RS signal sent by the base station, it calculates the target CSI parameters based on the CSI-RS resources and generates a target CSI report. Subsequently, the user equipment decides autonomously whether to report a complete target CSI report to the base station based on the target CSI parameters and judgment rules, thereby avoiding invalid data transmission in advance, greatly reducing uplink signaling overhead, and significantly reducing the RF transmission power consumption of the user equipment, realizing dynamic optimization and interference management of uplink resources.

[0042] In addition, this application also provides a CSI reporting device with the same effect. Attached Figure Description

[0043] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 A traditional CSI reporting flowchart is provided for embodiments of this application;

[0045] Figure 2 A flowchart of a CSI reporting method provided in this application embodiment;

[0046] Figure 3 A schematic diagram illustrating the overall CSI report process provided in this application embodiment;

[0047] Figure 4 A flowchart illustrating another CSI reporting method provided in this application embodiment;

[0048] Figure 5 A schematic diagram of a CSI reporting device provided in an embodiment of this application;

[0049] Figure 6 A schematic diagram of another CSI reporting device provided in the embodiments of this application;

[0050] Figure 7 This is a structural diagram of a CSI reporting device provided in an embodiment of this application. Detailed Implementation

[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0052] The core of this application is to provide a CSI reporting method and device to solve the problems of high feedback overhead and many invalid measurements in the current CSI reporting mechanism, which consume resources and increase terminal power consumption.

[0053] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0054] In modern wireless communication systems (such as 5G NR), in order to achieve the gain of multi-antenna technology and improve the system's throughput and coverage, the base station needs to accurately obtain downlink channel state information in order to perform precise precoding, beamforming, and link adaptive scheduling (such as adjusting the modulation and coding scheme MCS). Figure 1 A traditional CSI reporting flowchart provided for embodiments of this application. Figure 1 As shown, CSI acquisition typically follows this process: the base station configures and sends a Channel State Information Reference Signal (CSI-RS) to the user equipment (UE); the UE receives and measures this reference signal, calculating relevant parameters such as the Rank Indicator (RI), Precoding Matrix Indicator (PMI), and Channel Quality Indicator (CQI); finally, the UE feeds back the measurement results to the base station via the uplink control channel or data channel. Based on the received CSI report, the base station dynamically adjusts the parameters for subsequent downlink data transmission.

[0055] In current communication standards, CSI measurement and reporting resources are primarily configured and scheduled uniformly by the base station. According to the industry standard 3GPP TS 38.214 (NR; Physical layer procedures for data), current CSI reporting mechanisms are mainly divided into three types: Periodic reporting, which is semi-statically configured via Radio Resource Control (RRC) signaling and has a fixed transmission period and time-frequency resources; Semi-persistent reporting, configured via RRC signaling and activated or deactivated by Medium Access Control Element (MAC-CE) commands; and Aperiodic reporting, which is dynamically triggered by Downlink Control Information (DCI).

[0056] However, in practical applications, the aforementioned existing technologies have the following significant drawbacks: First, to achieve higher transmission accuracy, existing codebook designs (such as Type II codebooks) and subband reporting mechanisms have become increasingly complex. This results in CSI reports occupying a large amount of uplink feedback resources. In scenarios with drastic channel changes or cell edge conditions, the huge feedback overhead not only encroaches on the transmission space of service data but may even lead to congestion of the feedback link. Second, under the existing base station-dominated mode, UEs often need to perform frequent measurements and uplink transmissions according to the parameters set by the base station. However, in some cases, the channel environment may not have changed significantly, or the current CSI report may have a negligible marginal contribution to the base station's optimization of data transmission. In this case, the measurement and reporting operations performed by the UE will generate unnecessary power consumption, reducing the terminal's battery life. In addition, the wireless environment in which the UE is located (such as movement speed and obstruction) fluctuates in real time. The configuration of periodic reports is relatively fixed and cannot detect sudden environmental changes; while semi-persistent reports, although they can be switched on and off, still have the decision-making power for triggering on the base station side. Limited by the latency of signaling interaction, they often cannot reflect the UE's current wireless environment status in a timely and accurate manner. Furthermore, due to the large amount of feedback from high-precision reports such as Type II, the base station needs to consume a significant amount of computing resources for decoding after receiving them. If the received CSI report cannot improve subsequent transmissions due to latency or accuracy issues, it not only wastes uplink transmission resources but also squanders the base station's processing power. To address these issues, this application provides a channel state information reporting method.

[0057] Figure 2A flowchart illustrating a CSI reporting method provided in an embodiment of this application. The method is applied to user equipment, such as... Figure 2 As shown, the method includes:

[0058] S10: Receive configuration information sent by the base station.

[0059] First, the UE needs to receive configuration information sent by the base station. It is understood that the sending and receiving of this configuration information occurs before the execution of the CSI report. This configuration information includes at least CSI-RS resources, CSI reporting method, and decision rules.

[0060] It should be noted that CSI-RS resources refer to the reference signals and related time-frequency domain locations configured by the base station for the UE to measure channel state. Generally, the number of CSI-RS ports, density, code division multiplexing type, and the time slot and subband location are defined, serving as the basic physical resources for the UE to perform channel sounding and interference measurements. In this embodiment, the specific content of the CSI-RS resources configured for the UE is not limited and depends on the specific implementation. The CSI reporting method is the behavior pattern and format of the UE reporting measurement results, including but not limited to periodic, semi-persistent, and aperiodic types. It can also be specified whether the report content is reported in the broadband or subband. In this embodiment, the specific content of the CSI reporting method is also not limited and depends on the specific implementation. The decision rule is the criterion used by the UE to decide whether to execute the CSI report. In this embodiment, the specific content of the decision rule is not limited.

[0061] S11: When a CSI-RS signal is received from a base station, the target CSI parameters are calculated based on the CSI-RS resources, and a target CSI report is generated based on the target CSI parameters.

[0062] Furthermore, when the UE receives the CSI-RS signal sent by the base station, the UE performs signal reception and channel estimation according to the configured CSI-RS resources and calculates the target CSI parameters. It should be noted that the target CSI parameters refer to information obtained by the UE through measuring the downlink reference signal, used to characterize channel quality or transmission characteristics. These include, but are not limited to, basic measurements such as Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Received Signal Strength Indicator (RSSI), and Signal-to-Interference-plus-Noise Ratio (SINR); standardized feedback quantities such as CQI, RI, PMI, and strongest beam order; and performance indicators such as predicted throughput, spectral efficiency, Modulation and Coding Scheme (MCS), and channel capacity. In this embodiment, the specific content of the target CSI parameters calculated by the UE is not limited and depends on the specific implementation.

[0063] After obtaining the target CSI parameters, a target CSI report is generated based on these parameters. It should be noted that the target CSI report refers to the uplink information generated by the UE after selecting, quantizing, and encoding the channel state parameters, used to feed back to the network equipment. This embodiment does not limit the specific content of the target CSI report.

[0064] S12: Based on the target CSI parameters and the judgment rules, determine whether to report the target CSI report to the base station; if yes, proceed to step S13; if no, proceed to step S14.

[0065] S13: Report the target CSI report to the base station according to the CSI reporting method.

[0066] S14: Skip reporting the target CSI report to the base station.

[0067] Subsequently, the UE performs local estimation of the calculated target CSI parameters. The core of this process is to use the calculated target CSI parameters and pre-configured decision rules to determine whether to report the target CSI to the base station. This embodiment does not limit the specific decision-making method and process; it depends on the specific implementation.

[0068] When it is determined that a target CSI report needs to be reported to the base station, the UE reports the target CSI report to the base station according to the pre-configured CSI reporting method, so that the base station can process the received CSI report. When it is determined that a target CSI report does not need to be reported to the base station, the UE actively mutes the process, skipping the reporting of the target CSI report to the base station. This allows the UE to autonomously decide whether to send a subsequent complete CSI report based on local performance gain assessment, thereby achieving dynamic optimization of uplink resources and interference management.

[0069] The CSI reporting method provided in this application involves the user equipment receiving configuration information sent by the base station, which includes at least CSI-RS resources, CSI reporting methods, and judgment rules, to pre-configure specific CSI reporting strategies for the user equipment. When the user equipment receives a CSI-RS signal sent by the base station, it calculates the target CSI parameters based on the CSI-RS resources and generates a target CSI report. Subsequently, the user equipment decides autonomously whether to report a complete target CSI report to the base station based on the target CSI parameters and judgment rules, thereby avoiding invalid data transmission in advance, greatly reducing uplink signaling overhead, and significantly reducing the RF transmission power consumption of the user equipment, realizing dynamic optimization and interference management of uplink resources.

[0070] In order to fully receive the configuration information sent by the base station, based on the above embodiments, in some embodiments, receiving the configuration information sent by the base station includes:

[0071] S101: Receive CSI-RS resources, CSI reporting methods, and judgment thresholds sent by the base station via radio resource control signaling.

[0072] Specifically, the UE receives CSI-RS resources, CSI reporting methods, and judgment thresholds sent by the base station via RRC signaling. In some embodiments, the base station can also configure CSI-RS resources, CSI reporting methods, and judgment thresholds for the UE via MAC-CE.

[0073] It is important to note that CSI-RS resources include at least a first uplink resource and a second uplink resource. The first uplink resource is used to send indication information and the corresponding CSI-RS resource identifier (ID) to the base station, and the second uplink resource is used to send the target CSI report to the base station; the reporting time t of the first uplink resource... t0 Earlier than the reporting time t of the second uplink resource tIn other words, after the UE completes the calculation of the target CSI report, it first needs to use the first uplink resource to send an indication message and the corresponding CSI-RS resource ID to the base station to notify the base station whether a complete CSI report is about to be sent. Then, it uses the second uplink resource to send the target CSI report to the base station. The judgment threshold corresponds to a threshold for a CSI parameter, which is used to compare the calculated target CSI parameter with it. The details are explained below:

[0074] Figure 3 This is a schematic diagram illustrating the overall CSI reporting process provided in an embodiment of this application. In some embodiments, such as Figure 3 As shown, based on the target CSI parameters and decision rules, it is determined whether to report the target CSI report to the base station, including:

[0075] S102: Determine the current CSI parameters based on CSI-RS resources.

[0076] S103: Determine the difference between the target CSI parameter and the current CSI parameter to determine the performance gain.

[0077] S104: Determine whether the performance gain is greater than the judgment threshold; if yes, proceed to step S105; if no, proceed to step S107.

[0078] S105: Send first indication information and corresponding CSI-RS resource identifier based on the first uplink resource; wherein, the first indication information represents the reporting of a complete CSI report.

[0079] S106: Report the target CSI report to the base station based on the second uplink resource.

[0080] S107: Send a second indication message and the corresponding CSI-RS resource identifier based on the first uplink resource, and skip reporting based on the second uplink resource; wherein, the second indication message indicates that the complete CSI report is skipped.

[0081] Specifically, after the UE completes the calculation of the target CSI parameters, it first needs to determine the current CSI parameters based on the known CSI-RS resources. It should be noted that the current CSI parameters here are either the current value of the target CSI parameters or the value reported last time. Subsequently, the difference between the target CSI parameters and the current CSI parameters is determined to determine the performance gain. It should be noted that this embodiment does not limit the specific type of performance gain; it is calculated based on the difference between the target value and the current value of at least one of the following CSI parameters: predicted throughput, spectral efficiency (SE), effective signal-to-interference-plus-noise ratio (ESINR), modulation and coding scheme (MCS) level, channel capacity, strongest beam ordering, or RSRP.

[0082] It is worth noting that the core algorithm used by the UE to locally evaluate the calculated CSI report parameters in this application is:

[0083] =Performance(CSI new )-Performance(CSI current ).

[0084] Among them, Performance (CSI) new ) represents the target CSI parameter value, Performance(CSI) current ) represents the current CSI parameter value. The performance gain is determined by the UE. After obtaining the performance gain, it is determined whether the performance gain is greater than a threshold. If the performance gain is greater than the threshold, the UE confirms that the target CSI parameter has changed significantly compared to the corresponding current CSI parameter, and a complete CSI report needs to be submitted. Therefore, the UE sends a first indication message and the corresponding CSI-RS resource identifier based on the first uplink resource. The first indication message indicates that a complete CSI report should be submitted. Finally, the UE submits the target CSI report to the base station based on the second uplink resource, thus completing the submission of the complete CSI report. If the performance gain is not greater than the threshold, the UE confirms that the target CSI parameter has not changed significantly compared to the corresponding current CSI parameter, and a complete CSI report is not required. Therefore, the UE sends a second indication message and the corresponding CSI-RS resource identifier based on the first uplink resource, and remains silent based on the second uplink resource, skipping the submission. The second indication message indicates that a complete CSI report should not be submitted.

[0085] Thus, by sending indication information from the UE to the base station, the base station gains predictive scheduling capabilities, enabling it to provide instantaneous resource replenishment for high-priority services. To help those skilled in the art better understand this process, the following example illustrates the following:

[0086] (a) Energy-saving scenarios based on broadband reports;

[0087] First, during the configuration phase: the base station configures periodic CSI reporting for the UE via RRC signaling and specifies a judgment threshold. .For example, This corresponds to a 1dB change in SINR. Simultaneously, the base station configures two associated uplink resources: the first uplink resource is used to transmit 1 bit of indication information and the corresponding CSI-RS resource ID, at time point t. t0 The second uplink resource is used to send complete broadband CSI reports (such as RI, PMI, CQI), at time point t. tUnderstandably, t t0 Earlier than t t .

[0088] After receiving the CSI-RS signal, the UE performs wideband channel measurement to obtain the target channel quality, such as measuring CQI, denoted as CQI. new And obtain the current channel command, denoted as CQI. current The UE calculates the difference in effective signal-to-interference-plus-noise ratio (SINR) between the two as the performance gain:

[0089] =Effective SINR new -Effective SINR current .

[0090] Subsequently, UE will With decision threshold Compare. If > If the UE determines that this update is valuable, the UE will use the first uplink resource t. t0 The corresponding CSI-RS resource ID and a first indication message indicating affirmative reporting are sent. If ≤ If the UE determines that this update is redundant information, the UE will use the first uplink resource t. t Send the corresponding CSI-RS resource ID and a second indication message indicating that the report is refused.

[0091] Finally, if the UE sends a positive first indication message, then the UE will use the second uplink resource t t Normally, the UE sends a complete CSI report, and the base station receives and processes the complete CSI report. If the UE sends an indication to refuse reporting, the UE will use the second reporting resource t. t By remaining silent, the base station can reschedule resources originally reserved for CSI reporting to other users or purposes for uplink data transmission, thereby improving overall throughput.

[0092] (ii) Application scenarios based on beam management;

[0093] First, during the configuration phase, the UE is configured to periodically report the IDs and RSRPs of the M strongest beams (i.e., reportQuantity = cri - RSRP, and M > 1) as well as a judgment threshold. .

[0094] After receiving the CSI-RS signal, the UE measures all N candidate CSI-RS resources and selects the target beam set Set for the current period. new Subsequently, the UE will set the target beam set. new Compared with the previously reported current beam set Set old The comparison is performed to determine whether any of the following criteria are met: the beam ID in the set has changed; or the RSRP change of any member exceeds a threshold. (e.g., 3dB); the beam strength order changes, such as the ID of the Top-1 beam changes. If any of the above conditions are met, the UE sends a first indication message indicating that it will definitely report, and then reports the complete target beam set Set. new Information. If none of the above conditions are met (i.e., the beam pattern is stable), the UE sends a second indication message indicating a refusal to report and skips the subsequent long-payload beam report transmission, thus avoiding the transmission of a large amount of redundant data.

[0095] (iii) Multi-point collaboration, such as link adaptation in scenarios of Coordinated Multi-Point (CoMP) or Multiple Transmission and Reception Points (Multi-TRP);

[0096] First, during the configuration phase, the base station configured report configurations corresponding to two hypotheses: ReportConfig-1 corresponds to TRP-1, and ReportConfig-2 corresponds to TRP-2, and set judgment thresholds. For example, a 10% throughput gain.

[0097] Upon receiving the CSI-RS signal, the UE simultaneously calculates the hypothetical performance Throughput1 based on TRP-1 and the hypothetical performance Throughput2 based on TRP-2, and compares them with the performance Throughput0 of the current serving link.

[0098] Subsequently, the UE makes the following decision: only when the gain of max(Throughput1,Throughput2) relative to Throughput0 exceeds the decision threshold. Only when the TRP gain is significant does the UE deem it necessary to trigger a handover or update recommendation. Specifically, if the TRP gain is significant, the UE sends a first indication message indicating a positive report along with the resource ID of the TRP with the strongest gain, and then reports the complete CSI of the recommended TRP (including CRI, RI, PMI, CQI, etc.), suggesting the base station to handover. If the TRP gain is insufficient, the UE sends a second indication message indicating a rejection of the report along with all resource IDs, instructing the base station to maintain the existing connection configuration, thereby avoiding frequent handover signaling with no substantial gain.

[0099] (iv) Adaptability to different codebooks;

[0100] Specifically, the base station semi-statically configures the codebook type for CSI reporting for the UE based on channel conditions and service requirements. For example, a Type I codebook is configured in scenarios with smooth channel changes or single-user scenarios; while a Type II codebook is configured when channel conditions are complex and high-precision multi-user beamforming is required. It is understood that the Type I codebook aims to achieve conventional-precision beam selection with lower feedback overhead and is mainly used for beam-scanning-based transmissions; the Type II codebook achieves more accurate precoding by feeding back higher-resolution channel information and is mainly used in multi-user MIMO scenarios, but with correspondingly higher feedback overhead. In this embodiment, corresponding decision thresholds need to be set for each of the two codebooks. For Type II codebooks with high overhead, the base station can be configured with a higher decision threshold, indicating that it should not report unless there is a very significant gain; while for Type I codebooks, it can tolerate a smaller gain, and its decision threshold is relatively smaller.

[0101] Regarding the configuration of the Type I codebook, the base station configures periodic CSI reports based on the Type I codebook for the UE via RRC signaling, including RI, PMI, and CQI, and configures the judgment thresholds. 1. For example, 5% throughput. Subsequently, the UE measures the channel and calculates the target RI, target PMI (based on Type I codebook), and target CQI, and then uses the resulting predicted throughput gain as a decision threshold. 1. Compare. If the gain > 1. The UE then sends the first indication information and subsequently reports a complete Type ICSI report (including target RI, target PMI, and target CQI). If the gain < If 1, the UE sends a second indication message and skips subsequent reporting.

[0102] Regarding the configuration of the Type II codebook, the base station configures the periodic CSI report based on the Type II codebook for the UE via RRC signaling. Because the PMI feedback bits of the Type II codebook are very large, the base station configures the corresponding judgment threshold to a higher value. 2. For example, 10% throughput. Subsequently, the UE performs channel estimation and singular value decomposition to calculate the target Type II CSI parameters (which may include multiple parameters), and then combines the resulting predicted throughput gain with... 2. Compare. If the gain > 2. Then the UE sends the first indication information and subsequently reports a complete, very large Type II CSI report. If the gain < 2. Then the UE sends a second indication message and skips subsequent reporting.

[0103] (v) Refined decision-making applied to subband reporting

[0104] First, during the configuration phase, the UE is configured with subband CSI reporting and corresponding decision thresholds. When the UE performs calculations, it confirms that the average gain across multiple subbands is greater than a threshold. Or when the gain of more than N subbands is greater than the threshold If the gain is significant, the first indication message is sent and all subsequent subband reports are made; otherwise, if the gain is not significant, only the second indication message is sent and no subsequent reports are made.

[0105] (vi) Scenarios that support Ultra-Reliable Low-Latency Communication (URLLC) or High-Reliability Low-Latency Communication (HRLLC) services;

[0106] In this scenario, some uplink resources are configured in mini-slot format. For example, a single slot contains 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols, while a mini-slot occupies only 2 or 4 symbols. Therefore, indication information is configured on the Physical Uplink Control Channel (PUCCH) resource of a mini-slot, while the complete CSI report is configured on a standard, later-timing PUCCH resource.

[0107] Specifically, at the start of a time slot, the UE makes a decision based on channel measurement results. Assuming the UE has determined the channel is stable by the second symbol and does not need to report a full CSI, the UE immediately sends a second indication message on a mini-slot PUCCH resource configured for symbols 3-4. Subsequently, the base station receives and parses the second indication message. Assuming that in time slot n+1, the PUCCH resource originally reserved for a full CSI report is located in time slot n+2, the base station can utilize this window to immediately reschedule the resource originally reserved for CSI reporting to another UE requiring URLLC uplink transmission via dynamic downlink control information (DCI).

[0108] Furthermore, in some embodiments, multiple CSI reports may be submitted simultaneously, potentially leading to resource conflicts in the time domain. Therefore, to avoid time domain resource conflicts among multiple CSI reports and ensure normal CSI report submission, when multiple CSI reports experience time domain resource conflicts, if the performance gain is confirmed to be greater than a threshold, the UE sends a first indication message and the corresponding CSI-RS resource identifier based on the first uplink resource. Conversely, if the performance gain is not greater than the threshold, the UE sends a second indication message and the corresponding CSI-RS resource identifier based on the first uplink resource and remains silent based on the second uplink resource. An example follows:

[0109] (vii) Intelligent collision avoidance in carrier aggregation (CA) scenarios.

[0110] First, during the configuration phase, the UE is configured with three component carriers (CC1, CC2, CC3) and a decision threshold. It should be noted that the above three component carriers at time t t The corresponding CSI report shows a time-domain collision and limited uplink capacity.

[0111] Before proceeding with the traditional priority sorting logic, the UE first calculates the reporting gain for each component carrier. For example, if the CC1 channel is stationary, the corresponding performance gain is < The CC2 channel exhibits moderate variation, corresponding to a performance gain > Drastic changes in the CC3 channel (such as obstruction) result in a corresponding performance gain > At this point, although CC1 may have a high static priority level, its gain is extremely low, so the UE actively decides to discard the detailed report for CC1 and generate a second indication message for CC1, but does not need to report it, thereby saving the corresponding first uplink resources. The UE generates corresponding first indication messages for CC2 and CC3 and executes the reporting of the first indication messages.

[0112] Because CC1 voluntarily withdrew from resource contention, the freed capacity allowed CC3, which might have been dropped by low-priority rules, to be transmitted in its entirety. Ultimately, the UE only sent complete CSI reports for CC2 and CC3, without needing to send the complete CSI report for CC1, significantly improving the link adaptive robustness of the multi-carrier system.

[0113] Furthermore, CSI reporting resources and Physical Uplink Shared Channel (PUSCH) data may overlap in the time domain. Therefore, to avoid affecting CSI reporting, based on the above embodiments, in some embodiments, when the reporting time of the target CSI parameter overlaps with the reporting time of PUSCH data in the time domain, and the corresponding performance gain is not greater than the judgment threshold, the target CSI parameter can be directly rejected from being reused in PUSCH, that is, the target CSI parameter is not reported, and PUSCH data is directly reported to the base station. Examples are given below:

[0114] (viii) Scenarios for mitigating Uplink Control Information (UCI) multiplexing conflicts and reducing PUSCH performance loss;

[0115] First, during configuration, the UE is configured to report periodic CSI data. In a specific time slot (Slotn), the UE receives a DCI scheduling request from the base station, requiring it to transmit PUSCH data in that time slot. According to existing mechanisms, the UE should perform UCI multiplexing and transmit the periodic CSI report along with the PUSCH.

[0116] In this embodiment, the UE evaluates the current periodic CSI report content before Slot n or at the beginning of processing. When the UE finds that the corresponding channel change is small and the gain of the periodic CSI report is lower than the configured decision threshold, it sends a second indication information to the base station. Simultaneously, based on the second indication information, the UE cancels the UCI multiplexing process and only sends PUSCH data without inserting the periodic CSI report, thereby mitigating UCI multiplexing conflicts and reducing PUSCH performance loss.

[0117] (ix) Dynamic activation / deactivation based on MAC-CE and single-trigger DCI;

[0118] To flexibly activate / deactivate the rule-based CSI reporting process according to actual network conditions, in some embodiments, based on the above embodiments, after generating a target CSI report based on the target CSI parameters using the CSI-RS resources, CSI reporting method, and determination threshold sent by the base station via radio resource control signaling, the following steps are also included:

[0119] S111: When a MAC-CE or DCI indicating activation of the CSI reporting process based on decision rules is received, proceed to step S12.

[0120] S112: When a MAC-CE indicating the deactivation of the CSI reporting process based on decision rules is received, the target CSI report is directly reported to the base station through the second uplink resource.

[0121] During the configuration phase, the base station configures all the parameters required for the two-step CSI reporting process based on decision rules for the UE via RRC signaling, but the initial state of this process is deactivated. In the deactivated state, the UE behaves in accordance with traditional CSI reporting, that is, it directly reports a complete CSI report after receiving the CSI-RS signal.

[0122] Specifically, when the base station wants to enable the above process, it can send an activation signaling message to the UE via MAC-CE. Upon receiving the MAC-CE, the UE switches the process state to active. Thereafter, the UE executes the determination rules as described in the preceding embodiments, deciding whether to report a complete CSI report based on a comparison between the performance gain and the determination threshold. When the base station wants to disable the process, it sends a deactivation signaling message via MAC-CE. Upon receiving the deactivation signaling message, the UE resumes directly reporting a complete CSI report.

[0123] In addition, the base station can also trigger this procedure once via DCI. For example, the base station can use a reserved code point in the CSI request field of the DCI to instruct the UE to immediately perform a CSI reporting procedure based on a decision rule. After receiving the DCI, the UE executes a decision rule and decides whether to report, and then returns to its original state.

[0124] In this way, by actively activating / deactivating the above-mentioned CSI reporting process based on the judgment rules, network resources can be saved, the computational pressure on the UE side can be alleviated, and the complete CSI report can be submitted, ensuring the integrity of the report information.

[0125] (x) Dynamically update the judgment threshold through DCI / MAC-CE

[0126] To ensure the accuracy and reliability of the rule-based CSI reporting process, in some embodiments, in addition to the above embodiments, the method further includes:

[0127] S121: Dynamically update the judgment threshold through DCI and / or MAC-CE.

[0128] During the process, the base station can dynamically adjust the judgment threshold based on changes in channel conditions or service requirements. For example, when the base station detects that the UE is in a high-speed moving state, it can send a new threshold or an offset relative to the current threshold to the UE via DCI. After receiving the DCI, the UE updates the locally stored judgment threshold, and subsequent judgments use the new threshold. Similarly, the base station can also update the threshold by carrying new threshold parameters via MAC-CE, thereby achieving lightweight updates to the judgment threshold and ensuring the accuracy and reliability of the judgment process.

[0129] Figure 4 A flowchart illustrating another CSI reporting method provided in this application embodiment. The method is applied to a base station, such as... Figure 4 As shown, the method includes:

[0130] S20: Send configuration information to the user equipment.

[0131] The configuration information includes at least CSI-RS resources, CSI reporting methods, and judgment rules.

[0132] S21: Send a CSI-RS signal to the user equipment so that the user equipment can calculate the target CSI parameters based on the CSI-RS resources and generate a target CSI report based on the target CSI parameters; determine whether to report the target CSI report to the base station based on the target CSI parameters and the judgment rules; if yes, report the target CSI report to the base station according to the CSI reporting method; if no, skip reporting the target CSI report to the base station.

[0133] In this embodiment, the base station sends configuration information to the user equipment, including at least CSI-RS resources, CSI reporting methods, and judgment rules, to pre-configure specific CSI reporting strategies for the user equipment. Subsequently, a CSI-RS signal is sent to the user equipment, enabling it to calculate target CSI parameters based on the CSI-RS resources and generate a target CSI report. Then, based on the target CSI parameters and judgment rules, the user equipment autonomously decides whether to report a complete target CSI report to the base station, thereby preventing invalid data transmission in advance, significantly reducing uplink signaling overhead, and substantially reducing the RF transmission power consumption of the user equipment, achieving dynamic optimization and interference management of uplink resources.

[0134] To improve resource utilization, based on the above embodiments, in some embodiments, after sending the CSI-RS signal to the user equipment, the method further includes:

[0135] S201: Receive the indication information and corresponding CSI-RS resource identifier reported by the user equipment based on the first uplink resource;

[0136] S202: When the second instruction information is received, the second uplink resource is reallocated to other user equipment or processes, or the second uplink resource is kept in an unused state.

[0137] Specifically, the system receives the indication information and corresponding CSI resource identifier reported by the user equipment based on the first uplink resource, and performs resource management operations on the second uplink resource according to the indication information. It should be noted that the indication information includes at least a first indication indicating the reporting of a complete CSI report and a second indication indicating skipping the reporting of a complete CSI report. The resource management operation process performed by the base station is described below:

[0138] When the base station receives the second indication information, it confirms that the UE will not report a complete CSI report through the second uplink resources. In order not to waste the second uplink resources, the base station will reallocate the second uplink resources to other user equipment or processes, or keep the second uplink resources in a discontinuous transmission (DTX) state.

[0139] Based on this, in order to maintain the idle state of the second uplink resource, in some embodiments, when the network is deployed as Subband Full Duplex (SBFD), self-interference on the receiving side is suppressed and / or receiving blocking is avoided based on the quiescent period of the second uplink resource, so as to ensure the receiving performance in full-duplex mode. Examples are given below:

[0140] (xi) Interference suppression and resource reserve mechanism;

[0141] When the network is under light load or in a subband full-duplex deployment, the UE determines that the CSI gain is insufficient based on a decision threshold, sends a second indication message to the base station, and does not send information on the time-frequency resources originally used to send the complete report. At this time, after receiving the second indication message, the base station does not reschedule the idle resources, keeping them physically "silent" to achieve resource reservation.

[0142] The above are method embodiments provided in this application. As can be seen from the above, this application endows base station scheduling with predictability, enabling instantaneous resource replenishment for high-priority services. It has rescheduled time-frequency resources originally reserved for CSI reporting to uplink data services or other users / purposes, thereby significantly improving overall uplink capacity and spectrum efficiency. By setting a judgment threshold, the problem of invalid reporting is solved; during channel stability periods, the UE no longer mechanically sends duplicate information, fundamentally solving the pain point of excessive overhead for Type II codebooks and subband reporting; simultaneously, for the resource-intensive Type II codebook, by setting a higher threshold, reporting is forced only when significant gain can be generated. Furthermore, when CSI reports and uplink data conflict in the same time slot, the necessity of UCI multiplexing is eliminated by actively abandoning low-gain CSI reports. This not only reduces the processing overhead of the UE executing complex multiplexing algorithms, but more importantly, maintains the integrity of PUSCH data, avoiding coding gain loss due to carrying control signaling, thereby improving the transmission reliability of uplink data. Finally, by implementing resource reservation, the base station reduces interference within and between cells, thereby improving the overall quality of the wireless environment.

[0143] It should also be noted that the indication information (first indication information or second indication information) reported by the UE to the base station in this application can be a 1-bit indication or a 2-bit indication, specifically indicating no update (00), partial update / subband update (01), or complete update (10), thereby further refining the feedback. Meanwhile, the judgment threshold in this application, after being statically configured by the base station, can be further adaptively adjusted by the UE based on its remaining battery power. For example, when the UE's battery power is low, the threshold can be actively increased to force energy saving. Furthermore, the UE can use machine learning models to predict future channel trends. If it predicts that the channel will remain stable for a period of time, then when reporting the indication information, the indication information can not only indicate the current cycle but also request the base station to temporarily shut down reserved resources for the following cycles. Finally, in addition to CSI-RS, the above-mentioned evaluation mechanism in this application can also be applied to measurement reports based on Synchronization Signal and Physical Broadcast Channel Block (SSB) or other pilot signals.

[0144] In the above embodiments, CSI reporting has been described in detail. This application also provides embodiments corresponding to CSI reporting devices.

[0145] Figure 5 This is a schematic diagram of a CSI reporting device provided for an embodiment of this application. The device is applied to user equipment, such as... Figure 5 As shown, the device includes:

[0146] The receiving module 10 is used to receive configuration information sent by the base station; wherein the configuration information includes at least CSI-RS resources, CSI reporting method and judgment rules;

[0147] The measurement module 11 is used to calculate the target CSI parameters based on the CSI-RS resources when it receives the CSI-RS signal sent by the base station, and to generate a target CSI report based on the target CSI parameters;

[0148] The judgment module 12 is used to determine whether to report the target CSI report to the base station based on the target CSI parameters and judgment rules; if yes, the reporting module is triggered; if no, the rejection execution module is triggered.

[0149] Reporting module 13 is used to report the target CSI report to the base station according to the CSI reporting method;

[0150] Module 14 is rejected for skipping the reporting of the target CSI report to the base station.

[0151] In some embodiments, the receiving module 10 includes:

[0152] The first receiving submodule is used to receive CSI-RS resources, CSI reporting methods and judgment thresholds sent by the base station through radio resource control signaling;

[0153] The CSI reporting method includes at least a first uplink resource and a second uplink resource; the first uplink resource is used to send indication information and the corresponding CSI-RS resource identifier to the base station, and the second uplink resource is used to send the target CSI report to the base station; the reporting time of the first uplink resource is earlier than the reporting time of the second uplink resource.

[0154] In some embodiments, the determining module 12 includes:

[0155] The first determination submodule is used to determine the current CSI parameters based on CSI-RS resources;

[0156] The second determination submodule is used to determine the difference between the target CSI parameter and the current CSI parameter in order to determine the performance gain;

[0157] The first judgment submodule is used to determine whether the performance gain is greater than the judgment threshold; if yes, the first reporting submodule is triggered; if no, the third reporting submodule is triggered.

[0158] The first reporting submodule is used to send a first indication information and a corresponding CSI-RS resource identifier based on the first uplink resource; wherein, the first indication information represents the reporting of a complete CSI report;

[0159] The second reporting submodule is used to report the target CSI report to the base station based on the second uplink resources;

[0160] The third reporting submodule is used to send a second indication information and a corresponding CSI-RS resource identifier based on the first uplink resource, and to skip reporting based on the second uplink resource; wherein, the second indication information indicates that the complete CSI report is skipped.

[0161] In some embodiments, it also includes:

[0162] The first execution submodule is used to, when receiving a MAC-CE or DCI indicating the activation of the CSI reporting process based on the decision rules, proceed to the step of determining whether to report the target CSI report to the base station according to the target CSI parameters and the decision rules.

[0163] The second execution submodule is used to directly report the target CSI report to the base station through the second uplink resource when it receives a MAC-CE indicating the deactivation of the CSI reporting process based on the decision rule.

[0164] In some embodiments, it also includes:

[0165] The first update submodule is used to dynamically update the judgment threshold via DCI and / or MAC-CE.

[0166] Since the embodiments of the apparatus and the embodiments of the method correspond to each other, please refer to the description of the embodiments of the method for the embodiments of the apparatus, which will not be repeated here.

[0167] Figure 6 This is a schematic diagram of another CSI reporting device provided in an embodiment of this application. The device is applied to a base station, such as... Figure 6 As shown, the device includes:

[0168] The first sending module 15 is used to send configuration information to the user equipment; wherein, the configuration information includes at least CSI-RS resources, CSI reporting method and judgment rules;

[0169] The second transmitting module 16 is used to transmit CSI-RS signals to the user equipment so that the user equipment can calculate the target CSI parameters based on the CSI-RS resources and generate a target CSI report based on the target CSI parameters; and determine whether to report the target CSI report to the base station based on the target CSI parameters and the judgment rules; if yes, report the target CSI report to the base station according to the CSI reporting method; if no, skip reporting the target CSI report to the base station.

[0170] In some embodiments, it also includes:

[0171] The second receiving submodule is used to receive indication information and corresponding CSI-RS resource identifier reported by the user equipment based on the first uplink resource; wherein, the indication information includes at least a first indication information indicating that a complete CSI report is reported and a second indication information indicating that the report of a complete CSI report is skipped;

[0172] The resource processing module is used to reallocate the second uplink resource to other user devices or processes, or to keep the second uplink resource in an unused state, when it receives the second indication information.

[0173] In some embodiments, the resource processing module includes:

[0174] The resource processing submodule is used to suppress self-interference on the receiving side and / or avoid receiving blockage based on the quiescent period of the second uplink resource when the network is deployed as subband full-duplex.

[0175] In some embodiments, it also includes:

[0176] The signaling transmission module is used to send target signaling to user equipment via MAC-CE;

[0177] Among them, the target signaling characterizes the activation or deactivation of the CSI reporting process based on decision rules.

[0178] Since the embodiments of the apparatus and the embodiments of the method correspond to each other, please refer to the description of the embodiments of the method for the embodiments of the apparatus, which will not be repeated here.

[0179] Figure 7 A structural diagram of a CSI reporting device provided in this application embodiment is shown below. Figure 7 As shown, the CSI reporting equipment includes:

[0180] Memory 20 is used to store computer programs;

[0181] The processor 21 is configured to implement the steps of the CSI reporting method as described in the above embodiments when executing a computer program.

[0182] The CSI reporting device provided in this embodiment may include, but is not limited to, smartphones, tablets, laptops, or desktop computers.

[0183] The processor 21 may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor 21 may be implemented using at least one of the following hardware forms: Digital Signal Processor (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 21 may also include a main processor and a coprocessor. The main processor, also known as the Central Processing Unit (CPU), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor 21 may integrate a Graphics Processing Unit (GPU), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, the processor 21 may also include an Artificial Intelligence (AI) processor, which handles computational operations related to machine learning.

[0184] The memory 20 may include one or more computer-readable storage media, which may be non-transitory. The memory 20 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In this embodiment, the memory 20 is used to store at least the following computer program 201, which, after being loaded and executed by the processor 21, is capable of implementing the relevant steps of the channel state information reporting method disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202 and data 203, and the storage method may be temporary or permanent storage. The operating system 202 may include Windows, Unix, Linux, etc. The data 203 may include, but is not limited to, the data involved in the channel state information reporting method.

[0185] In some embodiments, the channel status information reporting device may further include a display screen 22, an input / output interface 23, a communication interface 24, a power supply 25, and a communication bus 26.

[0186] Those skilled in the art will understand that Figure 7 The structure shown does not constitute a limitation on the channel state information reporting device and may include more or fewer components than illustrated.

[0187] Finally, this application also provides an embodiment corresponding to a computer-readable storage medium. The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps described in the above method embodiments (which may be a method corresponding to the user equipment side, a method corresponding to the base station side, or a method corresponding to both the user equipment side and the base station side).

[0188] It is understood that if the methods in the above embodiments are implemented as software functional units 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 this application, in essence, 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. This computer software product is stored in a storage medium and executes all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0189] The CSI reporting method and apparatus provided in this application have been described in detail above. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

[0190] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A CSI reporting method, characterized in that, Applied to user equipment, the method includes: Receive configuration information sent by the base station; wherein, the configuration information includes at least CSI-RS resources, CSI reporting method, and judgment rules; When the CSI-RS signal sent by the base station is received, the target CSI parameters are calculated based on the CSI-RS resources, and a target CSI report is generated based on the target CSI parameters; Based on the target CSI parameters and the determination rule, determine whether to report the target CSI report to the base station; If so, the target CSI report is reported to the base station according to the CSI reporting method. If not, then skip reporting the target CSI report to the base station.

2. The CSI reporting method according to claim 1, characterized in that, Receive configuration information sent by the base station, including: Receive the CSI-RS resources, the CSI reporting method, and the judgment threshold sent by the base station via radio resource control signaling; The CSI reporting method includes at least a first uplink resource and a second uplink resource; the first uplink resource is used to send indication information and a corresponding CSI-RS resource identifier to the base station, and the second uplink resource is used to send the target CSI report to the base station; the reporting time of the first uplink resource is earlier than the reporting time of the second uplink resource.

3. The CSI reporting method according to claim 2, characterized in that, Based on the target CSI parameters and the determination rule, determining whether to report the target CSI report to the base station includes: Determine the current CSI parameters based on the CSI-RS resources; Determine the difference between the target CSI parameter and the current CSI parameter to determine the performance gain; Determine whether the performance gain is greater than the determination threshold; If so, then based on the first uplink resource, send the first indication information and the corresponding CSI-RS resource identifier; wherein, the first indication information represents reporting a complete CSI report; The target CSI report is reported to the base station based on the second uplink resource; If not, then based on the first uplink resource, send the second indication information and the corresponding CSI-RS resource identifier, and skip the reporting based on the second uplink resource; wherein, the second indication information indicates that the complete CSI report is skipped.

4. The CSI reporting method according to claim 2, characterized in that, After receiving the CSI-RS resources, CSI reporting method, and determination threshold sent by the base station via radio resource control signaling, the method further includes: When a MAC-CE or DCI indicating activation of the CSI reporting process based on the determination rule is received, the process proceeds to the step of determining whether to report the target CSI report to the base station based on the target CSI parameters and the determination rule. When a MAC-CE indicating the deactivation of the CSI reporting process based on the determination rule is received, the target CSI report is directly reported to the base station through the second uplink resource.

5. The CSI reporting method according to any one of claims 2 to 4, characterized in that, Also includes: The determination threshold is dynamically updated via DCI and / or MAC-CE.

6. A CSI reporting method, characterized in that, Applied to a base station, the method includes: Send configuration information to the user equipment; wherein, the configuration information includes at least CSI-RS resources, CSI reporting method, and judgment rules; A CSI-RS signal is sent to the user equipment so that the user equipment can calculate the target CSI parameters based on the CSI-RS resources and generate a target CSI report based on the target CSI parameters. Based on the target CSI parameters and the determination rule, it is determined whether to report the target CSI report to the base station. If yes, the target CSI report is reported to the base station according to the CSI reporting method. If no, the reporting of the target CSI report to the base station is skipped.

7. The CSI reporting method according to claim 6, characterized in that, After sending the CSI-RS signal to the user equipment, the process also includes: The system receives indication information and a corresponding CSI-RS resource identifier reported by the user equipment based on a first uplink resource; wherein the indication information includes at least a first indication information indicating that a complete CSI report is to be reported and a second indication information indicating that the reporting of a complete CSI report is skipped. When the second instruction information is received, the second uplink resource is reassigned to other user equipment or processes, or the second uplink resource is kept in an unused state.

8. The CSI reporting method according to claim 7, characterized in that, Maintaining the idle state of the second uplink resource includes: When the network is deployed as a sub-band full-duplex, the quiescent period of the second uplink resource is used to suppress self-interference on the receiving side and / or avoid receiving blockage.

9. The CSI reporting method according to any one of claims 6 to 8, characterized in that, Also includes: Send target signaling to the user equipment via MAC-CE or DCI; The target signaling characterizes the activation or deactivation of the CSI reporting process based on the determination rule.

10. A CSI reporting device, characterized in that, include: Memory, used to store computer programs; A processor for executing the computer program to implement the steps of the CSI reporting method as described in any one of claims 1 to 9.

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