Channel state information feedback method, terminal, base station and storage medium

Abstract

The present application proposes a channel state information feedback method, a terminal, a base station and a storage medium, the method comprising: determining a resource for sending a channel state information CSI feedback; preparing the CSI feedback; sending the CSI feedback on the resource. In the technical solution of the present application, the terminal can determine a resource for sending a channel state information feedback according to the instruction of the base station, and send the corresponding CSI feedback to the base station on the resource, so as to ensure that the base station receives the CSI feedback in time.

Description

Technical Field

[0001] The present invention relates to the field of communications, and in particular to a channel state information feedback method, a terminal, a base station and a storage medium. Background Art

[0002] Considering the requirements of low latency and high reliability of Ultra-reliable and Low Latency Communications (URLLC) services, the terminal needs to feed back more accurate and timely Channel State Information (CSI) to the base station, so that the base station can perform more reasonable link adaptation to meet the needs of URLLC services. The base station triggers non-periodic channel state information feedback while scheduling downlink data transmission. The terminal can feedback the triggered non-periodic channel state information feedback in the uplink control channel, which can ensure that the base station receives the feedback from the terminal as soon as possible. Based on this method, how the base station indicates to the terminal the resources for feedback of non-periodic channel state information is a problem that needs to be solved. Summary of the invention

[0003] The main purpose of this embodiment is to propose a channel state information feedback method, terminal, base station and storage medium, aiming to enable the terminal to send CSI feedback on the resources for sending channel state information feedback determined according to the instructions of the base station, and the base station can receive the CSI feedback in a timely manner.

[0004] The present invention provides a method for feeding back channel state information, including:

[0005] Determining resources for sending channel state information CSI feedback;

[0006] preparing the CSI feedback;

[0007] The CSI feedback is sent on the resource.

[0008] The embodiment of the present application also provides a channel state information feedback method, including:

[0009] Trigger channel state information CSI feedback;

[0010] indicating resource-related configuration for sending the CSI feedback;

[0011] Receive the corresponding CSI feedback.

[0012] An embodiment of the present application also provides a terminal, which includes a memory, a processor, a program stored in the memory and executable on the processor, and a data bus for realizing connection and communication between the processor and the memory. When the program is executed by the processor, the channel state information feedback method provided in the embodiment is realized.

[0013] An embodiment of the present application also provides a base station, which includes a memory, a processor, a program stored in the memory and executable on the processor, and a data bus for realizing connection and communication between the processor and the memory. When the program is executed by the processor, the channel state information feedback method provided in the embodiment is realized.

[0014] An embodiment of the present application also provides a storage medium for computer-readable storage, wherein the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the channel state information feedback method provided in the embodiment.

[0015] The channel state information feedback method, terminal, base station and storage medium provided in the embodiments of the present application, the terminal sends the CSI feedback through the resources for sending CSI feedback indicated by the base station, so that the CSI feedback can be sent to the base station on the corresponding resources, thereby ensuring that the base station receives the CSI feedback of the terminal in a timely manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a flowchart of a terminal-based channel state information feedback method provided in an embodiment of the present application.

[0017] Figure 2 It is a flow chart of a base station-based channel state information feedback method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present application more clear, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0019] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0020] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no special meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0021] In the current NR R15, the feedback of aperiodic-Channel State Information (A-CSI) can only be triggered by the Physical Downlink Control Channel (PDCCH) carrying the UL Grant, and is fed back in the Physical Uplink Shared Channel (PUSCH) scheduled by the UL Grant. In this way, if there is no ULSCH to be sent, the base station has to send the PDCCH carrying the UL Grant in order to trigger the aperiodic channel state feedback, which may cause PDCCH blocking. Therefore, the aperiodic channel state information feedback can be triggered by the PDCCH carrying the DL Grant, and the DL Grant can simultaneously schedule the Physical Downlink Shared Channel (PDSCH). Thus, the triggering of aperiodic channel state information feedback is enhanced. When the base station has PUSCH to schedule and needs the terminal to feedback channel state information, the aperiodic channel state information feedback can be triggered by UL Grant; when the base station has PDSCH to schedule and needs the terminal to feedback channel state information, the aperiodic channel state information feedback can be triggered by DL Grant. The feedback of aperiodic channel state information can also be triggered after the terminal decodes the PDSCH TB as Not Acknowl edgment (NACK), so that the aperiodic channel state information fed back can be applied to the retransmission link adaptation of the PDSCH TB as soon as possible.

[0022] After decoding the PDSCH, the terminal generates a Hybrid Automatic Repeat-request-ACK (HARQ-ACK) feedback for the PDSCH according to the decoding result, which is an ACK or NACK, and needs to carry the HARQ-ACK feedback on the PUCCH to feed it back to the base station. In order to carry the HARQ-ACK feedback for multiple PDSCHs on one PUCCH, NR introduces a semi-static HARQ-ACK codebook and a dynamic HARQ-ACK codebook. For the dynamic HARQ codebook method, the base station finally carries the HARQ-ACK feedback for multiple PDSCHs on a PUCCH Resource in a time slot indicated by K1 and PRI in the last DCI based on the K1 indication of multiple PDSCHs, where K1 indicates the offset between the slot where the DCI is located and the slot where the PUCCH is located, and PRI indicates the PUCCH Resourc index.

[0023] In R16, the Priority indicator field is introduced in the DCI for scheduling PDSCH or PUSCH to indicate priority information. With the introduction of this field, the HARQ-ACK feedback corresponding to the decoding result of the scheduled PDSCH also has high and low priority.

[0024] If the terminal needs to send multiple uplink transmission channels, the time domain resources of these multiple uplink transmission channels may overlap in whole or in part. Once overlap occurs, the terminal needs to multiplex the multiple uplink transmissions on one uplink transmission channel if certain conditions are met; if other conditions are met, the terminal needs to discard some uplink transmissions and only send the reserved uplink transmissions.

[0025] like Figure 1 As shown, this embodiment provides a channel state information feedback method, which is based on a terminal and includes:

[0026] S110, determining resources for sending channel state information CSI feedback;

[0027] S120, preparing the CSI feedback;

[0028] S130. Send the CSI feedback on the resource.

[0029] Among them, the CSI feedback that the terminal needs to send to the base station may include CSI feedback triggered by the base station and / or predefined CSI feedback, and the terminal needs to determine the resources for sending these CSI feedbacks. For CSI feedback, the resources for sending the CSI feedback are usually determined based on the relevant indication information provided by the base station. The terminal prepares the CSI feedback to be sent, carries the CSI report to be fed back, and sends the CSI feedback on the determined resources. It can be understood that Figure 1 The flowchart of the channel state information feedback method shown in does not constitute a limitation on determining resources for sending CSI feedback and preparing the execution order of CSI feedback.

[0030] In one implementation, determining a resource for sending the CSI feedback includes:

[0031] Determine the resource for sending the CSI feedback according to at least one of the following:

[0032] The priority of the CSI feedback, the time domain resource indication in the associated downlink control information DCI, the physical uplink control channel PUCCH resource indication in the associated DCI, the preset time domain offset, the preset frequency domain offset, the preset PUCCH resource indication offset, the priority of the associated uplink control information (Uplink Control Information, UCI) and the sending status of the associated hybrid automatic repeat request confirmation HARQ-ACK feedback.

[0033] Among them, the CSI feedback carried and sent on the PUCCH may include at least one of aperiod-CSI (Aperiod-CSI A-CSI) feedback, periodic CSI (Period-CSI, P-CSI) feedback and semi-persistent CSI (Semi-persistent-CSI, SP-CSI) feedback, and at least one of the above information may be used to indicate the PUCCH resource of the CSI feedback.

[0034] In an implementation manner, determining, according to the priority of the CSI feedback, a resource for sending the CSI feedback includes:

[0035] The priority of the CSI feedback is determined according to the Priority indicator field indication contained in the received associated DCI or the priority of the associated HARQ-ACK feedback.

[0036] In one implementation, the associated DCI includes at least one of the following:

[0037] A DCI for triggering the CSI feedback;

[0038] Scheduling a DCI of a transmission channel triggering the CSI feedback, wherein the transmission channel includes a PDSCH or a PUSCH;

[0039] Schedule the last DCI of the transport channel corresponding to the associated HARQ-ACK feedback.

[0040] In one implementation, the associated HARQ-ACK feedback includes at least one of the following:

[0041] HARQ-ACK feedback of the transport channel scheduled by the associated DCI;

[0042] A HARQ-ACK codebook comprising HARQ-ACK feedback of a transport channel scheduled by the associated DCI;

[0043] HARQ-ACK feedback having the same priority as the CSI feedback;

[0044] A HARQ-ACK codebook including a HARQ-ACK feedback having the same priority as the CSI feedback.

[0045] In one implementation, determining the priority of the CSI feedback according to a Priorityindicator field included in the received associated DCI includes:

[0046] If the Priority indicator field in the associated DCI indicates a high priority, the CSI feedback is a high priority; if the Priority indicator field in the associated DCI indicates a low priority, the CSI feedback is a low priority.

[0047] Among them, if the associated DCI for scheduling PDSCH or PUSCH transmission contains a Priority indicator field, and the DCI also triggers A-CSI feedback, the A-CSI feedback can be triggered at least through the CSI Request field of the DCI, then if the triggered A-CSI feedback is transmitted on the PUCCH, the priority of the A-CSI feedback can be indicated by the Priority indicator field in the DCI. If the Priority indicator field in the associated DCI indicates a high priority, the A-CSI feedback is a high priority; if the Priority indicator field in the associated DCI indicates a low priority, the A-CSI feedback is a low priority.

[0048] In one implementation, determining the priority of the CSI feedback according to the priority of the associated HARQ-ACK feedback includes:

[0049] If the associated HARQ-ACK feedback is of high priority, the CSI feedback is of high priority; if the associated HARQ-ACK feedback is of low priority, the CSI feedback is of low priority.

[0050] In an implementation manner, the sending the CSI feedback on the resource includes:

[0051] If the CSI feedbacks to be sent to the base station are multiple, the CSI feedbacks with the same priority are multiplexed and sent on the same PUCCH.

[0052] In one implementation, the CSI feedback includes at least one of A-CSI feedback, P-CSI feedback, and SP-CSI feedback. If the terminal needs to send multiple CSI feedbacks to the base station, it may include at least one of A-CSI feedback, P-CSI feedback, and SP-CSI feedback, then only CSI feedbacks with the same priority can be multiplexed and sent on the same PUCCH.

[0053] In an implementation manner, the sending the CSI feedback on the resource includes:

[0054] If the priority of the CSI feedback to be sent to the base station is the same as the priority of the associated UCI, the CSI feedback and the UCI of the same priority are multiplexed and sent on the same PUCCH.

[0055] The associated UCI may include at least one of A-CSI feedback, P-CSI feedback, SP-CSI feedback, associated HARQ-ACK feedback, scheduling request (SR) and channel sounding reference signal (SRS). If the terminal needs to send multiple UCIs to the base station, including at least one of the above-mentioned A-CSI feedback, P-CSI feedback, SP-CSI feedback, associated HARQ-ACK feedback, SR and SRS, then only multiple UCIs with the same priority can be multiplexed and sent on the same PUCCH.

[0056] If the base station sends several DCIs to the terminal for scheduling several PDSCHs, and at least one of the DCIs triggers A-CSI feedback, the terminal can form a dynamic HARQ-ACK codebook with the associated HARQ-ACK feedback corresponding to the PDSCH, if the associated HARQ-ACK feedback contained in the dynamic HARQ-ACK codebook is all high-priority HARQ-ACK feedback, then only the high-priority A-CSI feedback can be multiplexed with the dynamic HARQ-ACK codebook and sent in the same PUCCH; if the associated HARQ-ACK feedback contained in the dynamic HARQ-ACK codebook is all low-priority HARQ-ACK feedback, then only the low-priority A-CSI feedback can be multiplexed with the dynamic HARQ-ACK codebook and sent in the same PUCCH.

[0057] In one implementation, determining the resource for sending the CSI feedback according to the time domain resource indication in the associated DCI includes:

[0058] Determine the time domain resource for sending the CSI feedback according to the time domain resource indication in the DCI.

[0059] In one implementation, the time domain resource indication in the associated DCI is used to indicate the deviation between the time domain resource unit where the associated DCI is located and the time domain resource unit where the CSI feedback is located. Specifically, the time domain resource unit where the associated DCI is located is earlier than the time domain resource unit where the CSI feedback is located;

[0060] The time domain resource unit includes at least one of the following: a frame, a subframe, a slot, a sub-slot and an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0061] The PDSCH-to-HARQ_feedback timing indicator field in the associated DCI is used to indicate the deviation between the associated HARQ-ACK feedback transmission slot / sub slot of the PDSCH scheduled by the associated DCI and the associated DCI transmission slot / sub slot. If the associated DCI participates in triggering CSI feedback, or the decoding result of the PDSCH scheduled by the associated DCI participates in triggering CSI feedback, then the PDSCH-to-HARQ_feedback timing indicator field in the associated DCI can also be used to indicate the deviation between the CSI feedback transmission slot / sub slot and the associated DCI transmission slot / sub slot. The terminal can thus determine the slot / sub slot for sending CSI feedback according to the indication of the PDSCH-to-HARQ_feedback timing indicator field.

[0062] If the PDSCH-to-HARQ_feedback timing indicator field in the associated DCI indicates both the deviation between the associated HARQ-ACK feedback slot / sub slot and the associated DCI send slot / sub slot, and the deviation between the CSI feedback slot / sub slot and the associated DCI send slot / sub slot, then the associated HARQ-ACK feedback and the CSI feedback are sent in the same slot / sub slot, but whether the same time-frequency resources on the same slot / sub slot are used also depends on whether the PUCCH Resource and the PUCCH Resource Set are the same.

[0063] In one implementation, determining the resource for sending the CSI feedback according to the PUCCH resource indication in the associated DCI includes:

[0064] Determine a PUCCH resource index that carries the CSI feedback according to the PUCCH resource indication in the associated DCI.

[0065] In one implementation, the method further includes:

[0066] If the associated DCI is the last DCI of the HARQ-ACK codebook where the associated HARQ-ACK feedback is located, the PUCCH resource indication also indicates the PUCCH resource carrying the associated HARQ-ACK feedback.

[0067] The PUCCH resource indicator field in the associated DCI is used to indicate the PUCCH Resource index used for the associated HARQ-ACK feedback of the associated DCI-scheduled PDSCH and the PUCCH Resource index carrying the CSI feedback.

[0068] If the associated DCI is not the last DCI of the HARQ-ACK codebook where the associated HARQ-ACK feedback is located, the PUCCH Resource index used for the associated HARQ-ACK feedback is determined by the PUCCH resourceindicator field in the last DCI. If the associated DCI participates in triggering CSI feedback, or the PDSCH decoding result scheduled by the associated DCI participates in triggering CSI feedback, the PUCCH resource indicator field in the associated DCI is used to indicate the PUCCH resource index carrying the CSI feedback.

[0069] If the associated DCI is the last DCI of the HARQ-ACK codebook where the associated HARQ-ACK feedback is located, then the PUCCH Resource index of the PUCCH resource carrying the associated CSI feedback is the same as the PUCCH Resource index of the PUCCH resource carrying the associated HARQ-ACK codebook.

[0070] If the associated DCI is not the last DCI of the HARQ-ACK codebook corresponding to the associated HARQ-ACK feedback, then when the PUCCH resourceindicator field indicated in the last DCI of the HARQ-ACK codebook corresponding to the associated HARQ-ACK feedback is different from the PUCCH resource indicator field indicated in the associated DCI, the PUCCH Resource index of the PUCCH resource associated with the CSI feedback is different from the PUCCH Resource index of the PUCCH resource carrying the HARQ-ACK codebook, the terminal sends the associated HARQ-ACK feedback and the CSI feedback on different PUCCH Resources.

[0071] If the associated DCI is not the last DCI of the HARQ-ACK codebook corresponding to the associated HARQ-ACK feedback, then when the PUCCH resourceindicator field indicated in the last DCI of the HARQ-ACK codebook corresponding to the associated HARQ-ACK feedback is the same as the PUCCH resource indicator field indicated in the associated DCI, the PUCCH Resource index of the PUCCH resource associated with the CSI feedback is the same as the PUCCH Resource index of the PUCCH resource carrying the HARQ-ACK codebook, which is predefined by the system or semi-statically configured by the base station, and at least one of the following methods may be used:

[0072] The terminal needs to multiplex the associated HARQ-ACK feedback and the CSI feedback together, and the multiplexed UCI payload determines which PUCCH Resource Set to use. For the selected PUCCH Resource Set, the PUCCH resource indicator field indicated in the associated DCI determines which specific PUCCH Resource in the selected PUCCH Resource Set to use. Therefore, the associated HARQ-ACK feedback and the CSI feedback are carried and sent in the same PUCCH Resource.

[0073] The terminal does not multiplex the associated HARQ-ACK feedback and the CSI feedback. Determine which PUCCH Resource Set to use for each according to their respective UCI payloads. For example, if PUCCH Resource Set a is selected for the associated HARQ-ACK feedback and PUCCH Resource Set b is selected for the CSI feedback, and a and b are unequal integers, then in PUCCH Resource Set a, the PUCCH resource indicator field indicated in the associated DCI is used to determine which PUCCH Resource to use for the associated HARQ-ACK feedback. In PUCCH Resource Set b, the PUCCH resource indicator field indicated in the associated DCI is used to determine which PUCCH Resource to use for the CSI feedback. When configuring the base station, it is necessary to ensure that a and b are definitely unequal.

[0074] The terminal determines which PUCCH Resource Set to use for each of the associated HARQ-ACK feedback and the CSI feedback according to their respective UCI payloads. If the same PUCCHResource Set is selected for the associated HARQ-ACK feedback and the CSI feedback, the terminal considers that it is necessary to multiplex the associated HARQ-ACK feedback and the CSI feedback, and then re-determines which PUCCH Resource Set to use according to the multiplexed UCI payload. For the selected PUCCH Resource Set, the PUCCH resource indicator field indicated in the associated DCI determines which specific PUCCH Resource in the selected PUCCH Resource Set to use, so the associated HARQ-ACK feedback and the CSI feedback are carried and sent in the same PUCCHResource. If different PUCCH ResourceSets are selected for the associated HARQ-ACK feedback and the CSI feedback, namely, PUCCH Resource Set a and PUCCH Resource Set b, where a and b are unequal integers, then the PUCCH resource indicator field indicated in the associated DCI is used in PUCCH Resource Set a to determine which specific PUCCH Resource feedback to use for the associated HARQ-ACK feedback. In PUCCH Resource Set b, the PUCCH resource indicator field indicated in the associated DCI is used to determine which PUCCH Resource is used to feed back the CSI feedback.

[0075] In one implementation, determining, according to the preset time domain offset, a resource for sending the CSI feedback includes:

[0076] According to the preset time domain offset, the time domain resource for sending the CSI feedback is determined; wherein the preset time domain offset is predefined by the system or configured by the base station through RRC signaling or indicated in the associated DCI.

[0077] In one implementation, the preset time domain offset is used to indicate a deviation between a time domain resource unit for sending the CSI feedback and a time domain resource unit for sending the associated HARQ-ACK feedback.

[0078] A preset time domain offset offset 1 is predefined by the system or semi-statically configured to the terminal by the base station through RRC signaling or indicated in the associated DCI, and the offset 1 indicates the slot / subslot deviation between the slot / sub slot where the PUCCH Resource carrying the associated HARQ-ACK feedback is located and the slot / sub slot where the PUCCH Resource carrying the CSI feedback is located. Optionally, the slot / sub slot where the PUCCH Resource carrying the associated HARQ-ACK feedback is located is earlier, and the slot / sub slot where the PUCCH Resource carrying the CSI feedback is located is later, and the slot / sub slot index where the PUCCH Resource carrying the CSI feedback is located is equal to the slot / sub slot index where the PUCCH Resource carrying the associated HARQ-ACK feedback is located plus offset 1. It is understandable that the slot / sub slot where the PUCCH Resource carrying the associated HARQ-ACK feedback is located may also be later, and the slot / subslot where the PUCCH Resource carrying the CSI feedback is located may be earlier.

[0079] The terminal may determine whether to determine the slot / sub slot where the PUCCH Resource carrying the CSI feedback is located according to offset 1 based on whether the associated DCI is the last DCI of the HARQ-ACK codebook where the associated HARQ-ACK feedback is located.

[0080] If the associated DCI is the last DCI of the HARQ-ACK codebook where the associated HARQ-ACK feedback is located, the terminal determines the slot / sub slot where the PUCCH Resource carrying the CSI feedback is located according to the slot / sub slot where the PUCCH Resource carrying the associated HARQ-ACK feedback is located and offset 1.

[0081] If the associated DCI is not the last DCI of the HARQ-ACK codebook where the associated HARQ-ACK feedback is located, the terminal does not consider offset 1 or considers offset 1 to be equal to 0 when determining the slot / sub slot where the PUCCH Resource carrying the CSI feedback is located.

[0082] In one implementation, determining, according to the preset frequency domain offset, a resource for sending the CSI feedback includes:

[0083] According to the preset frequency domain offset, the frequency domain resource for sending the CSI feedback is determined, wherein the preset frequency domain offset is predefined by the system or configured by the base station through RRC signaling or indicated in the associated DCI.

[0084] In one implementation, the preset frequency domain offset is used to indicate the deviation between the starting frequency domain resource unit for sending the CSI feedback and the starting frequency domain resource unit for sending the associated HARQ-ACK feedback; wherein the frequency domain resource unit is a physical resource block (PRB), a bandwidth part (Bandwidth Part, BWP) or a resource block group (RBG).

[0085] Among them, the system predefines or the base station semi-statically configures a preset frequency domain offset offset 2 to the terminal through RRC signaling or indicates it in the associated DCI, and the offset 2 indicates the deviation between the starting frequency domain resource unit of the PUCCH Resource carrying the associated HARQ-ACK feedback and the starting frequency domain resource unit of the PUCCH Resource carrying the CSI feedback. The deviation can be a deviation in the direction of increasing the frequency domain resource unit, and the starting frequency domain resource unit of the PUCCH Resource carrying the CSI feedback is equal to the starting frequency domain resource unit of the PUCCH Resource carrying the associated HARQ-ACK feedback plus offset 2. It can be understood that the deviation can be a deviation in the direction of decreasing the frequency domain resource unit.

[0086] In one implementation, determining the resource for sending the CSI feedback according to the preset PUCCH resource indication bias includes:

[0087] According to the preset PUCCH resource indication bias, the PUCCH resource carrying the CSI feedback is determined; wherein the preset PUCCH resource indication bias is predefined by the system or configured by the base station through RRC signaling or indicated in the associated DCI.

[0088] In one implementation, the preset PUCCH resource indication bias is used to indicate a deviation between a PUCCH resource index carrying the CSI feedback and a PUCCH resource index carrying the associated HARQ-ACK feedback.

[0089] Among them, the system pre-defines or the base station semi-statically configures it to the terminal through RRC signaling or indicates a preset PUCCH resource indication offset offset 3 in the associated DCI, and the offset 3 indicates the deviation between the PUCCH resource indicator of the PUCCH Resource carrying the associated HARQ-ACK feedback and the PUCCH resource indicator of the PUCCH Resource carrying the CSI feedback. The deviation can be a non-negative integer, and the PUCCH resource indicator of the PUCCH Resource carrying the CSI feedback is equal to the PUCCH resource indicator of the PUCCH Resource carrying the associated HARQ-ACK feedback plus offset 3.

[0090] In one implementation, the preparing the CSI feedback includes:

[0091] Determine the effective load payload of the CSI feedback according to the first configuration value; wherein the first configuration value is predefined by the system or configured to the terminal by the base station through RRC signaling, indicating the number of CSI Reports included in the CSI feedback or the number of bits included in the CSI feedback.

[0092] In one implementation, the method further includes:

[0093] If the CSI feedback payload prepared according to the received CSI trigger is less than the payload determined by the first configuration value, supplement a number of padding bits at a specific position of the CSI feedback;

[0094] If the CSI feedback payload prepared according to the received CSI trigger is greater than the payload determined by the first configuration value, discard at least one CSI report to make the CSI feedback payload equal to the payload determined by the first configuration value.

[0095] In one implementation, if the CSI feedback payload prepared according to the received CSI trigger is greater than the payload determined by the first configuration value, discarding at least one CSI report to make the CSI feedback payload equal to the payload determined by the first configuration value, includes:

[0096] Discarding the at least one CSI report according to the time sequence in which the CSI reports are triggered; or

[0097] The at least one CSI report is discarded according to the priority order of the CSI Reports.

[0098] In an implementation manner, discarding the at least one CSI report according to the time sequence in which the CSI Report is triggered includes:

[0099] Discard the CSI report triggered earlier.

[0100] In one implementation, discarding the at least one CSI report according to the priority order of the CSI Report includes:

[0101] The CSI reports with lower priority are discarded.

[0102] Among them, the first configuration value N can be semi-statically configured, and the base station and the terminal will default that the terminal will feedback N A-CSI reports, so as to ensure that both parties reach a consensus on the PUCCH Resource Set to be used. If there are more than N A-CSIs to be fed back, the A-CSI triggered earlier can be discarded;

[0103] The terminal will determine which PUCCH Resource Set to use based on the UCI payload, and further determine which PUCCH Resource to use in the selected PUCCH Resource Set based on the indication of the PUCCH resource indicator. Only when the terminal and the base station have the same assumptions about the UCI payload can the terminal and the base station determine the same PUCCH Resource Set. For the case where CSI feedback is carried in PUCCH, the terminal and the base station use at least one of the following methods to determine the UCI payload:

[0104] Method 1: The system predefines or the base station semi-statically configures a CSI payload value N for the terminal.

[0105] Method 2: The system predefines or the base station semi-statically configures the number of CSI Reports M contained in the CSI payload for the terminal.

[0106] For method 1, if the PUCCH fed back by the terminal includes CSI feedback, then the CSI payload must be N bits. The N-bit CSI payload consists of one or more CSI Reports, and the multiple CSI Reports can be arranged in order from high to low priority or from earlier trigger to later trigger.

[0107] Specifically, if the CSI payload prepared by the terminal according to the received CSI trigger is less than N bits, the terminal shall add 0 bits at a suitable position. The suitable position may be at least one of the following: the position where the terminal does not receive or loses the DCI; the position where the HARQ-ACK feedback of the terminal decoding the PDSCH is NACK; the position at the end of the CSI payload.

[0108] If the CSI payload prepared by the terminal according to the received CSI trigger is larger than N bits, the terminal shall discard several CSI Reports to ensure that the CSI payload is N bits. The discarding shall comply with at least one of the following principles: discarding according to the time sequence of when the CSIReport is triggered, discarding the CSI Report triggered earlier; discarding according to the priority sequence of the CSI Report, discarding the CSI Report with a lower priority.

[0109] All CSI Reports included in the CSI payload have the same payload size for each CSI Report, which is predefined by the system or semi-statically configured to the terminal by the base station.

[0110] For method 2, if the PUCCH fed back by the terminal includes CSI feedback, then the CSI payload must include M CSI Reports. The M CSI Reports may be arranged in order from high to low priority or from earlier triggered to later triggered.

[0111] If the terminal prepares less than M CSI reports according to the received CSI trigger, the terminal shall add 0 bits at the appropriate position. Specifically, the appropriate position may be at least one of the following: the position where the terminal does not receive or loses the DCI; the position where the HARQ-ACK feedback of the terminal decoding the PDSCH is NACK; the position at the end of the CSI payload.

[0112] If the terminal prepares more than M CSI payloads according to the received CSI trigger, the terminal shall discard some CSI Reports to ensure that the CSI payload contains M CSI Reports. Specifically, the discarding follows at least one of the following principles: discarding according to the time sequence of when the CSI Report is triggered, discarding the CSI Report triggered earlier; discarding according to the priority sequence of the CSIReport, discarding the CSI Report with a lower priority.

[0113] All CSI Reports included in the CSI payload have the same payload size for each CSI Report, which is predefined by the system or semi-statically configured to the terminal by the base station.

[0114] In one implementation, the preparing the CSI feedback includes:

[0115] The CSI feedback is configured to include several CSI Reports, wherein the payload of each CSI Report is the same, the number of the CSI Reports is predefined by the system or configured by the base station through RRC signaling, and the payload of each CSI Report is predefined by the system or configured by the base station through RRC signaling.

[0116] In one implementation, the sending status of the associated HARQ-ACK feedback includes sending the associated HARQ-ACK feedback and canceling sending the associated HARQ-ACK feedback.

[0117] In one implementation, the method further includes:

[0118] If sending the associated HARQ-ACK feedback is cancelled, sending the CSI feedback is also cancelled accordingly.

[0119] In one implementation, if the PUCCH resource carrying the CSI feedback overlaps at least partially with the PUCCH resource carrying other UCI in time domain, the CSI feedback and the other UCI are multiplexed on the same PUCCH resource. The other UCI may include the associated HARQ-ACK feedback, SP-CSI feedback, P-CSI feedback, etc.

[0120] In one implementation, if a PUCCH resource carrying the CSI feedback overlaps at least partially with a PUCCH resource carrying other UCI in time domain, multiplexing the CSI feedback and the other UCI on the same PUCCH resource includes:

[0121] If the multiplexed UCI payload exceeds the carrying capacity of the multiplexed PUCCH Resource, part of the UCI is discarded according to the priority rule.

[0122] In one implementation, if the multiplexed UCI payload exceeds the carrying capacity of the multiplexed PUCCH Resource, discarding part of the UCI according to a priority rule includes:

[0123] The priority rule is that the HARQ-ACK feedback priority, A-CSI feedback priority, SP-CSI feedback priority and P-CSI feedback priority decrease in sequence;

[0124] Discard low priority UCIs.

[0125] Among them, when the time domain resources of multiple uplink channels overlap completely or partially, in some cases the terminal only sends part of the uplink channels and discards other uplink channels; in some cases the terminal needs to multiplex multiple UCIs that meet the multiplexing requirements in one uplink channel and send them. The system predefines or the base station semi-statically configures at least one of the following rules to the terminal, so that the terminal processes according to the following rules.

[0126] Rule 1: For the associated HARQ-ACK feedback and CSI feedback triggered by the same associated DCI, the two feedbacks are said to be associated with each other. Or when the decoding result of PDSCH triggers CSI feedback, the associated HARQ-ACK feedback and CSI feedback corresponding to the same HARQ-ACK codebook are also called associated feedback. When the terminal discards the associated HARQ-ACK feedback, its associated CSI feedback is also discarded. Specifically, the associated HARQ-ACK feedback and its associated CSI feedback are originally carried in the same or different PUCCHResources.

[0127] Rule 2: PUCCH Resource 1 carries A-CSI feedback and / or associated HARQ-ACK feedback, and PUCCH Resource 2 carries periodic CSI feedback and / or semi-persistent CSI feedback. When the time domain resources of PUCCH Resource 1 and PUCCH Resource 2 overlap completely or partially, the A-CSI feedback and / or associated HARQ-ACK feedback, as well as periodic CSI feedback and / or semi-persistent CSI feedback are multiplexed and transmitted on PUCCH Resource 1. If the multiplexed UCI payload exceeds the carrying capacity of PUCCH Resource 1, part of the UCI is discarded in the following priority order: the priority order is associated HARQ-ACK feedback>A-CSI feedback>semi-persistent CSI feedback>periodic CSI feedback. Specifically, the priority order is also followed for the bit concatenation order after multiplexing, and high priority feedback is placed first in the UCI payload, followed by low priority feedback, corresponding to high bit positions to low bit positions.

[0128] like Figure 2 As shown, this embodiment provides a channel state information feedback method, which is based on a base station and includes:

[0129] S210, triggering channel state information CSI feedback;

[0130] S220, indicating resource-related configuration for sending the CSI feedback;

[0131] S230: Receive the corresponding CSI feedback.

[0132] Among them, for A-CSI feedback, the base station needs to trigger the terminal to perform corresponding A-CSI feedback, and for periodic CSI feedback, the terminal will provide feedback according to the pre-configured period. For CSI feedback, the base station usually provides relevant indication information to indicate the terminal to send the resources for the CSI feedback. When the terminal prepares the CSI feedback to be sent and carries the CSI report to be fed back, the base station will receive the corresponding CSI feedback through the indicated resources.

[0133] In one implementation, indicating a resource-related configuration for sending the CSI feedback includes:

[0134] The resource for sending the CSI feedback is indicated by at least one of the following:

[0135] The priority of the CSI feedback, the time domain resource indication in the associated downlink control information DCI, the physical uplink control channel PUCCH resource indication in the associated DCI, the preset time domain offset, the preset frequency domain offset, the preset PUCCH resource indication offset, the priority of the associated uplink control information UCI and the sending status of the associated hybrid automatic repeat request confirmation HARQ-ACK feedback.

[0136] In one implementation, indicating a resource for sending the CSI feedback through the priority of the CSI feedback includes:

[0137] The priority of the CSI feedback is indicated by the Priority indicator field indication contained in the associated DCI sent or the priority of the associated HARQ-ACK feedback.

[0138] In one implementation, the associated DCI includes at least one of the following:

[0139] A DCI for triggering the CSI feedback;

[0140] Scheduling a DCI of a transmission channel triggering the CSI feedback, wherein the transmission channel includes a PDSCH or a PUSCH;

[0141] The last DCI of the transport channel corresponding to the associated HARQ-ACK feedback is scheduled.

[0142] In one implementation, the associated HARQ-ACK feedback includes at least one of the following:

[0143] HARQ-ACK feedback of the transport channel scheduled by the associated DCI;

[0144] A HARQ-ACK codebook comprising HARQ-ACK feedback of a transport channel scheduled by the associated DCI;

[0145] HARQ-ACK feedback having the same priority as the CSI feedback;

[0146] A HARQ-ACK codebook including a HARQ-ACK feedback having the same priority as the CSI feedback.

[0147] In one implementation, indicating the priority of the CSI feedback through a Priority indicator field included in the associated DCI includes:

[0148] If the Priority indicator field in the associated DCI indicates a high priority, it indicates that the CSI feedback is a high priority; if the Priority indicator field in the associated DCI indicates a low priority, it indicates that the CSI feedback is a low priority.

[0149] In one implementation, the indicating the priority of the CSI feedback by the priority of the associated HARQ-ACK feedback includes:

[0150] If the associated HARQ-ACK feedback is indicated as a high priority, the CSI feedback is indicated as a high priority; if the associated HARQ-ACK feedback is indicated as a low priority, the CSI feedback is indicated as a low priority.

[0151] In an implementation manner, the receiving the corresponding CSI feedback includes:

[0152] If there are multiple CSI feedbacks to be received, the CSI feedbacks with the same priority multiplexed on the same PUCCH are received.

[0153] In one implementation, the CSI feedback includes at least one of A-CSI feedback, P-CSI feedback, and SP-CSI feedback.

[0154] In an implementation manner, the receiving the corresponding CSI feedback includes:

[0155] If the priority of the CSI feedback to be received is the same as the priority of the associated UCI, the CSI feedback and the UCI with the same priority multiplexed on the same PUCCH are received and sent.

[0156] In one implementation, the associated UCI includes at least one of A-CSI feedback, P-CSI feedback, SP-CSI feedback, associated HARQ-ACK feedback, a scheduling request SR, and a channel sounding reference signal SRS.

[0157] In one implementation, indicating, by means of a time domain resource indication in the associated DCI, a resource for sending the CSI feedback, includes:

[0158] The time domain resource indication in the DCI indicates the time domain resource for sending the CSI feedback.

[0159] In one implementation, the time domain resource indication in the associated DCI is used to indicate the deviation between the time domain resource unit where the associated DCI is located and the time domain resource unit where the CSI feedback is located;

[0160] The time domain resource unit includes at least one of the following: frame, subframe, s lot, sub-s lot and OFDM symbol.

[0161] In one implementation, indicating, through the PUCCH resource indication in the associated DCI, a resource for sending the CSI feedback, includes:

[0162] The PUCCH resource indication in the associated DCI indicates the PUCCH resource index that carries the CSI feedback.

[0163] In one implementation, the method further includes:

[0164] If the associated DCI is the last DCI corresponding to the associated HARQ-ACK feedback, the PUCCH resource indication further indicates the PUCCH resource carrying the associated HARQ-ACK feedback.

[0165] In one implementation, indicating, by the preset time domain offset, a resource for sending the CSI feedback includes:

[0166] The preset time domain offset is used to indicate the time domain resource for sending the CSI feedback; wherein the preset time domain offset is predefined by the system or configured by the base station to the terminal through RRC signaling or indicated in the associated DCI.

[0167] In one implementation, the preset time domain offset is used to indicate a deviation between a time domain resource unit for sending the CSI feedback and a time domain resource unit for sending the associated HARQ-ACK feedback.

[0168] In one implementation, indicating, by using the preset frequency domain offset, a resource for sending the CSI feedback includes:

[0169] The preset frequency domain offset is used to indicate the frequency domain resource for sending the CSI feedback, wherein the preset frequency domain offset is predefined by the system or configured to the terminal through RRC signaling or indicated in the associated DCI.

[0170] In one implementation, the preset frequency domain offset is used to indicate the deviation between the starting frequency domain resource unit for sending the CSI feedback and the starting frequency domain resource unit for sending the associated HARQ-ACK feedback; wherein the frequency domain resource unit is a PRB, a BWP or a RBG.

[0171] In one implementation, indicating, by the preset PUCCH resource indication bias, a resource for sending the CSI feedback includes:

[0172] The preset PUCCH resource indication bias is used to indicate the PUCCH resource carrying the CSI feedback; wherein the preset PUCCH resource indication bias is predefined by the system or configured to the terminal through RRC signaling or indicated in the associated DCI.

[0173] In one implementation, the preset PUCCH resource indication bias is used to indicate a deviation between a PUCCH resource index carrying the CSI feedback and a PUCCH resource index carrying the associated HARQ-ACK feedback.

[0174] In an implementation manner, the indicating resource-related configuration for sending the CSI feedback includes:

[0175] The effective load payload of the CSI feedback is indicated through a first configuration value; wherein the first configuration value is predefined by the system or configured to the terminal through RRC signaling, including the number of CSI Reports included in the CSI feedback or the number of bits included in the CSI feedback.

[0176] In an implementation manner, the indicating resource-related configuration for sending the CSI feedback includes:

[0177] Instruct the terminal to configure that the CSI feedback includes several CSI Reports, wherein the payload of each CSI Report is the same, the number of the CSI Reports is predefined by the system or configured to the terminal through RRC signaling, and the payload of each CSI Report is predefined by the system or configured to the terminal through RRC signaling.

[0178] In one implementation, the sending status of the associated HARQ-ACK feedback includes sending the associated HARQ-ACK feedback and canceling sending the associated HARQ-ACK feedback.

[0179] In one implementation, the method further includes:

[0180] By canceling sending the associated HARQ-ACK feedback, it is correspondingly indicated that the sending of the CSI feedback is canceled.

[0181] This embodiment provides a terminal, which includes a memory, a processor, a program stored in the memory and executable on the processor, and a data bus for realizing connection and communication between the processor and the memory. When the program is executed by the processor, the channel state information feedback method provided in the embodiment is realized.

[0182] This embodiment provides a base station, which includes a memory, a processor, a program stored in the memory and executable on the processor, and a data bus for realizing connection and communication between the processor and the memory. When the program is executed by the processor, the channel state information feedback method provided in the embodiment is realized.

[0183] This embodiment provides a storage medium for computer-readable storage, wherein the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the channel state information feedback method provided in the embodiment.

[0184] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0185] In hardware implementation, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0186] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the present invention is not limited thereby. Any modification, equivalent substitution and improvement made by those skilled in the art without departing from the scope and essence of the present invention shall be within the scope of the present invention.

Claims

1. A channel state information feedback method, characterized in that: include: Determining resources for sending channel state information CSI feedback; preparing the CSI feedback; sending the CSI feedback on the resource; The channel state information CSI feedback includes CSI feedback triggered by a base station and / or predefined CSI feedback; The determining of resources for sending channel state information CSI feedback includes: Determine the resource for sending the CSI feedback according to at least one of the following: The priority of the CSI feedback, the time domain resource indication in the associated downlink control information DCI, the physical uplink control channel PUCCH resource indication in the associated DCI, the preset time domain offset, the preset frequency domain offset, the preset PUCCH resource indication offset, the priority of the associated uplink control information UCI and the sending status of the associated hybrid automatic repeat request confirmation HARQ-ACK feedback; Among them, the preset time domain offset is used to indicate the deviation between the time domain resource unit for sending the CSI feedback and the time domain resource unit for sending the associated HARQ-ACK feedback; the preset frequency domain offset is used to indicate the deviation between the starting frequency domain resource unit for sending the CSI feedback and the starting frequency domain resource unit for sending the associated HARQ-ACK feedback.

2. The method according to claim 1, characterized in that Determining, according to the priority of the CSI feedback, a resource for sending the CSI feedback, including: The priority of the CSI feedback is determined according to the Priority indicator field indication contained in the received associated DCI or the priority of the associated HARQ-ACK feedback.

3. The method according to claim 2, characterized in that The associated DCI includes at least one of the following: A DCI for triggering the CSI feedback; Scheduling a DCI of a transmission channel triggering the CSI feedback, wherein the transmission channel includes a PDSCH or a PUSCH; The last DCI of the transport channel corresponding to the associated HARQ-ACK feedback is scheduled.

4. The method according to claim 2, characterized in that: The associated HARQ-ACK feedback includes at least one of the following: HARQ-ACK feedback of the transport channel scheduled by the associated DCI; A HARQ-ACK codebook comprising HARQ-ACK feedback of a transport channel scheduled by the associated DCI; HARQ-ACK feedback having the same priority as the CSI feedback; A HARQ-ACK codebook including a HARQ-ACK feedback having the same priority as the CSI feedback.

5. The method according to claim 2, characterized in that: The determining the priority of the CSI feedback according to the Priority indicator field included in the received associated DCI includes: If the Priority indicator field in the associated DCI indicates a high priority, the CSI feedback is a high priority; if the Priority indicator field in the associated DCI indicates a low priority, the CSI feedback is a low priority.

6. The method according to claim 2, characterized in that The determining, according to the priority of the associated HARQ-ACK feedback, the priority of the CSI feedback includes: If the associated HARQ-ACK feedback is of high priority, the CSI feedback is of high priority; if the associated HARQ-ACK feedback is of low priority, the CSI feedback is of low priority.

7. The method according to any one of claims 2 to 6, characterized in that: The sending the CSI feedback on the resource includes: If the CSI feedbacks to be sent to the base station are multiple, the CSI feedbacks with the same priority are multiplexed and sent on the same PUCCH.

8. The method according to claim 7, characterized in that The CSI feedback includes at least one of A-CSI feedback, P-CSI feedback and SP-CSI feedback.

9. The method according to any one of claims 2 to 6, characterized in that: The sending the CSI feedback on the resource includes: If the priority of the CSI feedback to be sent to the base station is the same as the priority of the associated UCI, the CSI feedback and the UCI of the same priority are multiplexed and sent on the same PUCCH.

10. The method according to claim 9, characterized in that The associated UCI includes at least one of A-CSI feedback, P-CSI feedback, SP-CSI feedback, associated HARQ-ACK feedback, scheduling request SR and channel sounding reference signal SRS.

11. The method according to claim 1, characterized in that Determining a resource for sending the CSI feedback according to the time domain resource indication in the associated DCI includes: Determine the time domain resource for sending the CSI feedback according to the time domain resource indication in the DCI.

12. The method according to claim 11, characterized in that: The time domain resource indication in the associated DCI is used to indicate the deviation between the time domain resource unit where the associated DCI is located and the time domain resource unit where the CSI feedback is located; The time domain resource unit includes at least one of the following: a frame, a subframe, a slot, a sub-slot and an orthogonal frequency division multiplexing OFDM symbol.

13. The method according to claim 1, characterized in that Determining a resource for sending the CSI feedback according to a PUCCH resource indication in the associated DCI includes: Determine a PUCCH resource index that carries the CSI feedback according to the PUCCH resource indication in the associated DCI.

14. The method according to claim 13, characterized in that Also includes: If the associated DCI is the last DCI of the HARQ-ACK codebook where the associated HARQ-ACK feedback is located, the PUCCH resource indication also indicates the PUCCH resource carrying the associated HARQ-ACK feedback.

15. The method according to claim 1, characterized in that Determining, according to the preset time domain offset, a resource for sending the CSI feedback, including: According to the preset time domain offset, a time domain resource for sending the CSI feedback is determined; wherein the preset time domain offset is predefined by the system or configured by the base station through RRC signaling or indicated in the associated DCI.

16. The method according to claim 1, characterized in that Determining, according to the preset frequency domain offset, a resource for sending the CSI feedback, including: According to the preset frequency domain offset, the frequency domain resource for sending the CSI feedback is determined, wherein the preset frequency domain offset is predefined by the system or configured by the base station through RRC signaling or indicated in the associated DCI.

17. The method according to claim 1, characterized in that: The frequency domain resource unit is a physical resource block PRB, a partial bandwidth BWP or a resource block group RBG.

18. The method according to claim 1, characterized in that Determining a resource for sending the CSI feedback according to the preset PUCCH resource indication bias includes: According to the preset PUCCH resource indication bias, the PUCCH resource carrying the CSI feedback is determined; wherein the preset PUCCH resource indication bias is predefined by the system or configured by the base station through RRC signaling or indicated in the associated DCI.

19. The method according to claim 18, characterized in that: The preset PUCCH resource indication offset is used to indicate the deviation between the PUCCH resource index carrying the CSI feedback and the PUCCH resource index carrying the associated HARQ-ACK feedback.

20. The method according to claim 1, characterized in that The preparing the CSI feedback includes: Determine the effective load payload of the CSI feedback according to the first configuration value; wherein the first configuration value is predefined by the system or configured to the terminal by the base station through RRC signaling, indicating the number of CSI Reports included in the CSI feedback or the number of bits included in the CSI feedback.

21. The method according to claim 20, characterized in that Also includes: If the CSI feedback payload prepared according to the received CSI trigger is less than the payload determined by the first configuration value, supplement a number of padding bits at a specific position of the CSI feedback; If the CSI feedback payload prepared according to the received CSI trigger is greater than the payload determined by the first configuration value, discard at least one CSI report to make the CSI feedback payload equal to the payload determined by the first configuration value.

22. The method according to claim 21, characterized in that If the CSI feedback payload prepared according to the received CSI trigger is greater than the payload determined by the first configuration value, discarding at least one CSI report to make the CSI feedback payload equal to the payload determined by the first configuration value, includes: Discarding the at least one CSI report according to the time sequence in which the CSI reports are triggered; or The at least one CSI report is discarded according to the priority order of the CSI Reports.

23. The method according to claim 22, characterized in that The discarding the at least one CSI report according to the time sequence in which the CSI Report is triggered includes: Discard the CSI report triggered earlier.

24. The method according to claim 22, characterized in that The discarding of the at least one CSI report according to the priority order of the CSI Report comprises: The CSI reports with lower priority are discarded.

25. The method according to claim 1, characterized in that The preparing the CSI feedback includes: The CSI feedback is configured to include several CSI Reports, wherein the payload of each CSI Report is the same, the number of the CSI Reports is predefined by the system or configured by the base station through RRC signaling, and the payload of each CSI Report is predefined by the system or configured by the base station through RRC signaling.

26. The method according to claim 1, characterized in that The sending status of the associated HARQ-ACK feedback includes sending the associated HARQ-ACK feedback and canceling sending the associated HARQ-ACK feedback.

27. The method according to claim 26, characterized in that Also includes: If sending the associated HARQ-ACK feedback is cancelled, sending the CSI feedback is also cancelled accordingly.

28. The method according to claim 1, characterized in that If the PUCCH resource carrying the CSI feedback and the PUCCH resource carrying other UCI at least partially overlap in time domain, the CSI feedback and the other UCI are multiplexed on the same PUCCH resource.

29. The method according to claim 28, characterized in that If the PUCCH resource carrying the CSI feedback overlaps at least partially with the PUCCH resource carrying other UCI in time domain, multiplexing the CSI feedback and the other UCI on the same PUCCH resource includes: If the multiplexed UCI payload exceeds the carrying capacity of the multiplexed PUCCH Resource, part of the UCI is discarded according to the priority rule.

30. The method according to claim 29, characterized in that If the multiplexed UCI payload exceeds the carrying capacity of the multiplexed PUCCH Resource, part of the UCI is discarded according to the priority rule, including: The priority rule is that the HARQ-ACK feedback priority, A-CSI feedback priority, SP-CSI feedback priority and P-CSI feedback priority decrease in sequence; Discard low priority UCIs.

31. A channel state information feedback method, characterized in that: include: Trigger channel state information CSI feedback; indicating resource-related configuration for sending the CSI feedback; receiving the corresponding CSI feedback; The channel state information CSI feedback includes CSI feedback triggered by a base station and / or predefined CSI feedback; The resource-related configuration indicating sending the CSI feedback includes: The resource for sending the CSI feedback is indicated by at least one of the following: The priority of the CSI feedback, the time domain resource indication in the associated downlink control information DCI, the physical uplink control channel PUCCH resource indication in the associated DCI, the preset time domain offset, the preset frequency domain offset, the preset PUCCH resource indication offset, the priority of the associated uplink control information UCI and the sending status of the associated hybrid automatic repeat request confirmation HARQ-ACK feedback; Among them, the preset time domain offset is used to indicate the deviation between the time domain resource unit for sending the CSI feedback and the time domain resource unit for sending the associated HARQ-ACK feedback; the preset frequency domain offset is used to indicate the deviation between the starting frequency domain resource unit for sending the CSI feedback and the starting frequency domain resource unit for sending the associated HARQ-ACK feedback.

32. The method according to claim 31, characterized in that Indicating, by using the priority of the CSI feedback, a resource for sending the CSI feedback, including: The priority of the CSI feedback is indicated by the Priority indicator field indication contained in the associated DCI sent or the priority of the associated HARQ-ACK feedback.

33. The method according to claim 32, characterized in that The associated DCI includes at least one of the following: A DCI for triggering the CSI feedback; Scheduling a DCI of a transmission channel triggering the CSI feedback, wherein the transmission channel includes a PDSCH or a PUSCH; The last DCI of the transport channel corresponding to the associated HARQ-ACK feedback is scheduled.

34. The method according to claim 32, characterized in that The associated HARQ-ACK feedback includes at least one of the following: HARQ-ACK feedback of the transport channel scheduled by the associated DCI; A HARQ-ACK codebook comprising HARQ-ACK feedback of a transport channel scheduled by the associated DCI; HARQ-ACK feedback having the same priority as the CSI feedback; A HARQ-ACK codebook including a HARQ-ACK feedback having the same priority as the CSI feedback.

35. The method according to claim 32, characterized in that Indicating the priority of the CSI feedback through the Priorityindicator field included in the associated DCI includes: If the Priority indicator field in the associated DCI indicates a high priority, it indicates that the CSI feedback is a high priority; if the Priority indicator field in the associated DCI indicates a low priority, it indicates that the CSI feedback is a low priority.

36. The method according to claim 32, characterized in that The indicating the priority of the CSI feedback by the priority of the associated HARQ-ACK feedback includes: If the associated HARQ-ACK feedback is indicated as a high priority, the CSI feedback is indicated as a high priority; if the associated HARQ-ACK feedback is indicated as a low priority, the CSI feedback is indicated as a low priority.

37. The method according to any one of claims 32 to 36, characterized in that: The receiving the corresponding CSI feedback includes: If there are multiple CSI feedbacks to be received, the CSI feedbacks with the same priority multiplexed on the same PUCCH are received.

38. The method according to claim 37, characterized in that The CSI feedback includes at least one of A-CSI feedback, P-CSI feedback and SP-CSI feedback.

39. The method according to any one of claims 32 to 36, characterized in that: The receiving the corresponding CSI feedback includes: If the priority of the CSI feedback to be received is the same as the priority of the associated UCI, the CSI feedback and the UCI with the same priority multiplexed on the same PUCCH are received and sent.

40. The method according to claim 39, characterized in that The associated UCI includes at least one of A-CSI feedback, P-CSI feedback, SP-CSI feedback, associated HARQ-ACK feedback, scheduling request SR and channel sounding reference signal SRS.

41. The method according to claim 31, characterized in that Indicating, by means of a time domain resource indication in the associated DCI, a resource for sending the CSI feedback, comprising: The time domain resource indication in the DCI indicates the time domain resource for sending the CSI feedback.

42. The method according to claim 41, characterized in that: The time domain resource indication in the associated DCI is used to indicate the deviation between the time domain resource unit where the associated DCI is located and the time domain resource unit where the CSI feedback is located; The time domain resource unit includes at least one of the following: a frame, a subframe, a slot, a sub-slot and an orthogonal frequency division multiplexing OFDM symbol.

43. The method according to claim 31, characterized in that Indicating, by means of a PUCCH resource indication in the associated DCI, a resource for sending the CSI feedback, comprising: The PUCCH resource indication in the associated DCI indicates the PUCCH resource index that carries the CSI feedback.

44. The method according to claim 43, characterized in that Also includes: If the associated DCI is the last DCI of the HARQ-ACK codebook where the associated HARQ-ACK feedback is located, the PUCCH resource indication also indicates the PUCCH resource carrying the associated HARQ-ACK feedback.

45. The method according to claim 31, characterized in that Indicating, by using the preset time domain offset, a resource for sending the CSI feedback, including: The preset time domain offset is used to indicate the time domain resource for sending the CSI feedback; wherein the preset time domain offset is predefined by the system or configured by the base station to the terminal through RRC signaling or indicated in the associated DCI.

46. ​​The method according to claim 31, characterized in that Indicating, by using the preset frequency domain offset, a resource for sending the CSI feedback, comprising: The preset frequency domain offset is used to indicate the frequency domain resource for sending the CSI feedback, wherein the preset frequency domain offset is predefined by the system or configured to the terminal through RRC signaling or indicated in the associated DCI.

47. The method according to claim 31, characterized in that: The frequency domain resource unit is a physical resource block PRB, a partial bandwidth BWP or a resource block group RBG.

48. The method according to claim 31, characterized in that Indicating a resource for sending the CSI feedback through the preset PUCCH resource indication bias includes: The preset PUCCH resource indication bias is used to indicate the PUCCH resource carrying the CSI feedback; wherein the preset PUCCH resource indication bias is predefined by the system or configured to the terminal through RRC signaling or indicated in the associated DCI.

49. The method according to claim 48, characterized in that: The preset PUCCH resource indication offset is used to indicate the deviation between the PUCCH resource index carrying the CSI feedback and the PUCCH resource index carrying the associated HARQ-ACK feedback.

50. The method according to claim 31, characterized in that The resource-related configuration indicating sending the CSI feedback includes: The effective load payload of the CSI feedback is indicated through a first configuration value; wherein the first configuration value is predefined by the system or configured to the terminal through RRC signaling, including the number of CSI Reports included in the CSI feedback or the number of bits included in the CSI feedback.

51. The method according to claim 31, characterized in that The resource-related configuration indicating sending the CSI feedback includes: Instruct the terminal to configure that the CSI feedback includes several CSI Reports, wherein the payload of each CSI Report is the same, the number of the CSI Reports is predefined by the system or configured to the terminal through RRC signaling, and the payload of each CSI Report is predefined by the system or configured to the terminal through RRC signaling.

52. The method according to claim 31, characterized in that The sending status of the associated HARQ-ACK feedback includes sending the associated HARQ-ACK feedback and canceling sending the associated HARQ-ACK feedback.

53. The method according to claim 52, characterized in that Also includes: By canceling sending the associated HARQ-ACK feedback, it is correspondingly indicated that the sending of the CSI feedback is canceled.

54. A terminal, characterized in that: The terminal includes a memory, a processor, a program stored in the memory and executable on the processor, and a data bus for realizing connection and communication between the processor and the memory. When the program is executed by the processor, the channel state information feedback method as described in any one of claims 1 to 30 is realized.

55. A base station, characterized in that: The base station includes a memory, a processor, a program stored in the memory and executable on the processor, and a data bus for realizing connection and communication between the processor and the memory. When the program is executed by the processor, the channel state information feedback method as described in any one of claims 31-53 is realized.

56. A storage medium for computer-readable storage, characterized in that: The storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the channel state information feedback method described in any one of claims 1-30 or the channel state information feedback method described in any one of claims 31-53.

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