Transmission and configuration of channel state information feedback

Abstract

The present invention relates to methods, systems and devices for digital wireless communication, and more particularly to a technique for triggering feedback of channel state information. In one exemplary aspect, a method for wireless communication is disclosed. The method includes receiving a first message from a wireless communication node by a terminal. The method also includes sending a feedback message to the wireless communication node via a first channel by the terminal in response to receiving the first message from the wireless communication node, the feedback message including at least one set of channel state information.

Description

Technical Field

[0001] This patent document relates generally to wireless communications. Background Art

[0002] Mobile communication technologies are moving the world towards an increasingly connected and networked society. The rapid growth of mobile communications and advances in technology have led to greater demands for capacity and connectivity. Other aspects such as energy consumption, equipment cost, spectrum efficiency and latency are also important to meet the needs of various communication scenarios. Various technologies are being discussed, including new methods to provide higher quality of service. Summary of the invention

[0003] This document discloses methods, systems, and devices related to digital wireless communications, and more particularly, discloses techniques related to triggering feedback of channel state information.

[0004] In one exemplary aspect, a method for wireless communication is disclosed. The method includes receiving, by a terminal, a first message from a wireless communication node. The method also includes, by the terminal, in response to receiving the first message from the wireless communication node, sending a feedback message to the wireless communication node via a first channel, the feedback message including at least one set of channel state information.

[0005] In another exemplary aspect, a method for wireless communication is disclosed. The method includes sending, by a wireless communication node, a first message to a terminal, the first message including an indication for instructing to send at least one set of channel state information to the wireless communication node. The method also includes receiving, by the wireless communication node, a feedback message from the terminal via a first channel in response to sending the first message to the terminal.

[0006] In another exemplary aspect, a wireless communication device including a processor is disclosed. The processor is configured to implement the method described herein.

[0007] In yet another exemplary aspect, the various techniques described herein may be implemented as processor-executable code and stored on a computer-readable program medium.

[0008] Some embodiments may preferably implement the following technical solutions written in a clause format.

[0009] 1. A technical solution for wireless communication, comprising: receiving a first message from a wireless communication node by a terminal; and sending a feedback message to the wireless communication node via a first channel by the terminal in response to receiving the first message from the wireless communication node, wherein the feedback message includes at least one set of channel state information.

[0010] 2. The technical solution according to clause 1 also includes: the terminal multiplexing the at least one set of channel state information and hybrid automatic repeat request confirmation (HARQ-ACK) feedback information in the first resource of the first channel, wherein the first channel is a physical uplink control channel (PUCCH), and wherein the first resource is the first physical uplink control channel (PUCCH) resource of the first channel, and the first physical uplink control channel (PUCCH) resource is indicated by the first downlink control information (DCI).

[0011] 3. The technical solution according to clause 1, wherein the first channel is a physical uplink control channel (PUCCH), wherein the feedback message is included in a second physical uplink control channel (PUCCH) resource, the second physical uplink control channel (PUCCH) resource includes a second type of channel state information feedback, and wherein the second physical uplink control channel (PUCCH) resource is indicated by a first downlink control information (DCI), or by a second downlink control information (DCI) that triggers the second type of channel state information feedback.

[0012] 4. The technical solution according to clause 1, wherein the first message includes a physical uplink control channel (PUCCH) resource indicator field, and the physical uplink control channel (PUCCH) resource indicator field is included in the downlink control information (DCI), wherein the feedback message is sent to the wireless communication node via the physical uplink control channel (PUCCH) resource indicated by the physical uplink control channel (PUCCH) resource indicator field included in the downlink control information (DCI).

[0013] 5. A technical solution according to clause 1, wherein the first message includes a time slot offset indicator field, which is included in downlink control information (DCI), wherein the feedback message is sent to the wireless communication node via the first channel in a time slot, and wherein the time slot is indicated by the time slot offset indicator field included in the DCI.

[0014] 6. According to the technical solution described in Clause 5, the time slot offset indicator field includes any one of the following items: a first time offset between the time unit for receiving the first message and the time unit for sending the feedback message in the first channel, a second time offset between the end time unit for receiving the first message and the start time unit for sending the feedback message in the first channel, a third time offset between the time unit for sending hybrid automatic repeat request confirmation (HARQ-ACK) feedback information in the first channel and the time unit for sending the feedback message, and a fourth time offset between the end time unit for sending hybrid automatic repeat request confirmation (HARQ-ACK) feedback information in the first channel and the start time unit for sending the feedback message.

[0015] 7. A technical solution according to clause 1, wherein the feedback message is sent by the terminal in response to the expiration of a processing delay calculated from the receipt of the first message, wherein the processing delay includes the number of time units between the end time unit of reception of the first message and the start time unit of the feedback message sent via the first channel.

[0016] 8. A technical solution according to clause 1, wherein the at least one group of channel state information includes a first type of channel state information (CSI) feedback, the first type of channel state information (CSI) feedback includes a series of channel state information (CSI) reports prepared by the terminal, and wherein the time interval between the end time unit of the first downlink control information (DCI) and the start time unit of the first physical uplink control channel (PUCCH) resource is equal to or greater than the processing delay, and wherein the first type of channel state information (CSI) feedback is sent by the terminal in the first physical uplink control channel (PUCCH) resource.

[0017] 9. A technical solution according to clause 1, wherein the at least one group of channel state information includes a second type of CSI feedback, the second type of CSI feedback includes a series of CSI reports that are not ready to be sent when the terminal sends the first PUCCH resource, and wherein the time interval between the end time unit of the first DCI and the start time unit of the second PUCCH resource is greater than the processing delay.

[0018] 10. The technical solution according to clause 9, wherein when the terminal does not recognize any information indicating the second type of CSI feedback, the terminal ignores the indication of the second PUCCH resource indicated in the DCI triggering the CSI feedback.

[0019] 11. The technical solution according to Clause 9 also includes: the terminal cancels the second type of CSI feedback based on at least one of the following items: determining that the duration between the end time unit of the first message and the start time unit of the first channel is greater than a predefined first time threshold, determining that the time interval between the end time unit of the first message and the start time unit of the first channel is greater than the first time threshold configured by the wireless communication node through RRC signaling, determining that the first message does not include a PUCCH resource indicator, determining that there is no time slot offset indicator in the first message, determining that the trigger state indicated by the subsequent DCI corresponds to the trigger state in the first message, and determining that the CSI report included in the subsequent type of CSI feedback corresponds to the CSI report included in the first message.

[0020] 12. The technical solution according to clause 1, wherein the first channel is a configured granted PUSCH, wherein the at least one set of channel state information is included in the configured granted PUSCH.

[0021] 13. The technical solution according to Clause 12 also includes: the terminal determines that the configured licensed PUSCH is one of multiple first-class configured licensed PUSCH resources, or one of multiple second-class configured licensed PUSCH resources, wherein the first-class configured licensed PUSCH resources or the second-class configured licensed PUSCH resources are predefined or configured by the wireless communication node.

[0022] 14. A technical solution according to clause 12, wherein the at least one set of channel state information is sent in the most recently available resources of the configured permitted PUSCH or in the configured permitted PUSCH resources indicated by the wireless communication node.

[0023] 15. The technical solution according to clause 12, wherein the at least one set of channel state information is sent in a granted PUSCH of the configuration indicated by the DCI.

[0024] 16. The technical solution according to clause 1 also includes: the terminal concatenating multiple groups of channel state information according to the order in which each group of channel state information is triggered, wherein each group of channel state information includes the first type of CSI feedback or the second type of CSI feedback.

[0025] 17. The technical solution according to clause 16 also includes: the terminal determines that at least one group of channel state information exceeds the maximum code rate of the PUCCH resources associated with the feedback message and / or the maximum number of available physical resource blocks (PRBs) of the PUCCH resources associated with the feedback message; and the terminal sorts each group of channel state information according to the order in which each group of channel state information is triggered.

[0026] 18. The technical solution according to clause 1 also includes: the terminal checks the first message to identify the CSI report priority indication field that triggers the sending of the feedback message; the terminal determines that the priority of the first group of channel state information is higher than the priority of the second group of channel state information; and the terminal sends a feedback message based on determining that the priority of the first group of channel state information is higher than the priority of the second group of channel state information, and the feedback message includes the first group of channel state information.

[0027] 19. The technical solution according to clause 1 also includes: the terminal checking the first message to identify a downlink (DL) grant priority indicator; the terminal determining the priority of each group of channel state information; and the terminal adding a group of channel state information with the highest priority to the feedback message.

[0028] 20. A technical solution according to clause 1, wherein the first message includes information indicating a processing delay in sending the feedback message, wherein the processing delay is provided as any one of the following items: a time slot, a sub-time slot, and / or an orthogonal frequency division multiplexing (OFDM) symbol.

[0029] 21. The technical solution according to clause 1 further includes: the terminal divides multiple instances of each group of channel state information into multiple PUCCH resources, wherein the multiple PUCCH resources are included in the feedback message.

[0030] 22. A technical solution according to clause 1, wherein the first message is a downlink (DL) grant message, and the downlink grant message includes a PUCCH resource indicator added to the channel state information (CSI) field of the first message, wherein the added PUCCH resource indicator indicates a first PUCCH resource and triggers the terminal to send each group of channel state information in the first PUCCH resource via the feedback message.

[0031] 23. The technical solution according to clause 1 also includes: in response to determining that the first message includes an indication for indicating that at least one set of channel state information is to be sent in the feedback message, selecting a PUCCH resource from a list of non-periodic PUCCH resources to feed back at least one set of channel state information in the feedback message.

[0032] 24. A technical solution according to clause 1, wherein the feedback message includes at least one HARQ-ACK information bit, at least one HARQ-ACK cyclic redundancy error (CRC) check bit, at least one non-periodic channel state information (A-CSI) bit, and at least one A-CSI CRC check bit.

[0033] 25. A technical solution according to clause 24, wherein the at least one HARQ-ACK information bit indicates that the PDSCH transport block (TB) is NACK.

[0034] 26. A technical solution according to clause 1, wherein the feedback message includes channel quality information for one or more frequency domain resource units, wherein the frequency domain resource unit includes any one of the following items: a downlink bandwidth part (BWP), a subband, and a physical resource block (PRB).

[0035] 27. A technical solution for wireless communication, comprising: a wireless communication node sending a first message to a terminal, the first message including an indication for sending at least one set of channel state information to the wireless communication node; and the wireless communication node receiving a feedback message from the terminal via a first channel in response to sending the first message to the terminal.

[0036] 28. A technical solution according to clause 27, wherein the feedback message includes the at least one set of channel state information, and the at least one set of channel state information is multiplexed with hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback information in the first resource of the first channel, wherein the first channel is a physical uplink control channel (PUCCH), and wherein the first resource is the first PUCCH resource of the first channel, and the first PUCCH resource is indicated by the first downlink control information (DCI).

[0037] 29. A technical solution according to clause 27, wherein the first channel is PUCCH, wherein the feedback message is included in a second PUCCH resource, the second PUCCH resource includes a second type of channel state information feedback, and wherein the second PUCCH resource is indicated by a first DCI, or by a second DCI that triggers the second type of channel state information feedback.

[0038] 30. A technical solution according to clause 27, wherein the first message includes a PUCCH resource indicator field, which is included in the DCI, and wherein the feedback message is sent to the wireless communication node via the PUCCH resource indicated by the PUCCH resource indicator field included in the DCI.

[0039] 31. A technical solution according to clause 27, wherein the first message includes a time slot offset indicator field, which is included in the DCI, wherein the feedback message is sent to the wireless communication node via the first channel in a time slot, and wherein the time slot is indicated by the time slot offset indicator field included in the DCI.

[0040] 32. A technical solution according to clause 31, wherein the time slot offset indicator field includes any one of the following items: a first time offset between the time unit for sending the first message and the time unit for receiving the feedback message in the first channel, a second time offset between the end time unit for sending the first message and the start time unit for receiving the feedback message in the first channel, a third time offset between the time unit for receiving the HARQ-ACK feedback information in the first channel and the time unit for receiving the feedback message, and a fourth time offset between the end time unit for receiving the HARQ-ACK feedback information in the first channel and the start time unit for receiving the feedback message.

[0041] 33. A technical solution according to clause 27, wherein the feedback message is sent by the terminal in response to the expiration of a processing delay calculated from the receipt of the first message, wherein the processing delay includes the number of time units between the end time unit of reception of the first message and the start time unit of the feedback message sent via the first channel.

[0042] 34. A technical solution according to clause 27, wherein the at least one group of channel state information includes a first type of channel state information (CSI) feedback, the first type of CSI feedback includes a series of CSI reports prepared by the terminal, and wherein the time interval between the end time unit of the first DCI and the start time unit of the first PUCCH resource is equal to or greater than the processing delay, and wherein the first type of CSI feedback is sent by the terminal in the first PUCCH resource.

[0043] 35. A technical solution according to clause 27, wherein the at least one set of channel state information includes a second type of CSI feedback, the second type of CSI feedback includes a series of CSI reports that are not ready to be sent when the terminal receives the first PUCCH resource, and wherein the time interval between the end time unit of the first DCI and the start time unit of the second PUCCH resource is greater than the processing delay.

[0044] 36. The technical solution according to clause 27, wherein the first channel is a configured granted PUSCH, wherein the at least one set of channel state information is included in the configured granted PUSCH.

[0045] 37. A technical solution according to clause 36, wherein the wireless communication node configures at least one configured permitted PUSCH resource as the first channel through RRC signaling, wherein the configured permitted PUSCH resource is any one of the second type of configured permitted PUSCH resources or the first type of configured permitted PUSCH resources.

[0046] 38. A technical solution according to clause 36, wherein the wireless communication node indicates available configured permitted PUSCH resources in the DCI that triggers the feedback message, and the available configured permitted PUSCH resources are used to send at least one set of channel state information.

[0047] 39. A technical solution according to clause 36, wherein the wireless communication node configures a type of CSI feedback, and the type of CSI feedback is fed back in the configured licensed PUSCH via RRC signaling, wherein the type of CSI feedback is one of a first type of CSI feedback or a second type of CSI feedback.

[0048] 40. A technical solution according to clause 27, wherein multiple groups of channel state information in the feedback message are concatenated according to the order in which each group of channel state information is triggered, wherein each group of channel state information includes the first type of CSI feedback or the second type of CSI feedback.

[0049] 41. An apparatus for wireless communication, comprising a processor configured to perform the technical solution according to any one of clauses 1 to 40.

[0050] 42. A non-transitory computer-readable medium having a code stored thereon, which, when executed by a processor, causes the processor to perform the technical solution according to any one of clauses 1 to 40. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 is a block diagram depicting example bit fields for multiple transport blocks and multiple PUCCH resources.

[0052] Figure 2 is an example bit field indicating HARQ-ACK information and A-CSI information.

[0053] Figure 3 is an example block diagram showing the bit fields of the A-CSI bits.

[0054] Figure 4 is a block diagram of an example method for triggering feedback of channel state information.

[0055] Figure 5 An example of a wireless communication system is shown, to which the technology according to one or more embodiments of the present technology can be applied.

[0056] Figure 6 is a block diagram representing a portion of a hardware platform. DETAILED DESCRIPTION

[0057] The development of the next generation of wireless communications - 5G New Radio (NR) communications is part of the process of continuous development of mobile broadband evolution to meet the growing network needs. NR will provide greater throughput to allow more users to be connected simultaneously. Other aspects such as energy consumption, equipment cost, spectrum efficiency and latency are also important to meet the needs of various communication scenarios.

[0058] Many networks require low latency and high reliability in providing wireless communications (e.g., Ultra Reliable Low Latency Communications, URLLC). In many cases, the terminal (or "user equipment (UE)") can feedback accurate and timely channel state information to the base station so that the base station can perform reasonable link adaptation tasks to ensure that the wireless communication meets the low latency and high reliability requirements.

[0059] In some cases, feedback on aperiodic channel state information can only be triggered by a physical downlink control channel (PDCCH) carrying an uplink (UL) grant. Feedback can be performed on a physical uplink shared channel (PUSCH) scheduled by an UL grant. In these cases, if there is no UL data to send, the base station must send a PDCCH carrying an UL grant to trigger aperiodic channel state feedback. This may result in PDCCH blocking.

[0060] Therefore, in many cases, there are schemes that propose that the feedback of aperiodic channel state information can be triggered using a PDCCH carrying a downlink (DL) grant, and the DL grant can schedule the PDSCH at the same time. This can trigger the feedback of aperiodic channel state information. This may occur when the base station has a scheduled PUSCH and the terminal needs to feedback channel state information. This can include feedback of aperiodic channel state information triggered by a UL grant. In some embodiments, when the base station has a scheduled PDSCH requesting the terminal to provide channel state information, the DL grant can be used to trigger the feedback of aperiodic channel state information.

[0061] In many cases, it is proposed that after the terminal decodes a PDSCH transport block (TB) as non-acknowledgement (NACK), the terminal can trigger feedback of non-periodic channel state information so that the fed-back non-periodic channel state information can be applied to retransmission link adaptation of the PDSCH TB.

[0062] After the terminal decodes the PDSCH, an ACK (acknowledgement) or NACK (non-acknowledgement) for the PDSCH can be generated in the HARQ-ACK feedback according to the decoding result, and the HARQ-ACK feedback may need to be included in the PUCCH feedback fed back to the base station. In order to carry PDSCH HARQ-ACK feedback for multiple PUCCHs on one PUCCH, NR can introduce a semi-static HARQ-ACK codebook and / or a dynamic HARQ-ACK codebook. For the HARQ codebook mode, the base station can carry the HARQ-ACK feedback for multiple PDSCHs on a PUCCH Resource in a certain time slot indicated by K1 and PRI in the last DCI based on the K1 indication of multiple PDSCHs. K1 can indicate the offset between the time slot where the DCI is located and the time slot where the PUCCH is located, and PRI can indicate the PUCCH resource index.

[0063] In many cases, there have been solutions that propose that the terminal feed back the aperiodic channel state information triggered by DL grant and / or NACK to the base station on the PUCCH, which can facilitate timely feedback.

[0064] System Overview

[0065] This embodiment relates to triggering feedback of channel state information. Specifically, this embodiment provides a method for triggering accurate and timely feedback of channel state information.

[0066] Example 1

[0067] Example embodiment 1 may involve multiplexing A-CSI and HARQ-ACK, and feeding back information on the HARQ-ACK PUCCH. The system may pre-define or the base station may semi-statically configure the minimum A-CSI processing delay of the terminal under a specific SCS based on the terminal's processing capability for A-CSI. The A-CSI processing delay may be defined as "X" time units, which may be any one of a time slot, a sub-time slot, or an OFDM symbol.

[0068] A-CSI feedback may be triggered based on a DL grant sent by the base station to the terminal, and / or based on a NACK result of the terminal's decoding decision on the PDSCH scheduled by the DL grant. When the terminal determines that the A-CSI feedback is triggered, the terminal may feed back the A-CSI feedback to the base station.

[0069] Specifically, the processing delay "X" may include the number of time units between the end time unit of the UE receiving the DL grant that triggers the A-CSI feedback and the start time unit of the UE sending the A-CSI. The processing delay "X" may also include the number of time units between the end time unit of the PDSCH scheduled by the UE receiving the DL grant and the start time unit of the UE sending the A-CSI.

[0070] For DL ​​grants within the range of one HARQ-ACK codebook, the terminal may feedback HARQ-ACK on the PUCCH resources indicated by the "PUCCH resource indicator" field in the last DL grant and / or in the time slot indicated by the "PDSCH-to-HARQ_feedback timing indicator" field. The codebook may indicate whether the decoding results of all PDSCHs scheduled by one or more DL grants report ACK or NACK, and among all these DL grants, the last DCI is the most recently received by the terminal.

[0071] In some embodiments, if the processing of A-CSI is fast enough that the PUCCH resource carrying the HARQ-ACK codebook can carry both HARQ-ACK and A-CSI, then both can be sent together in the same resource. However, if the processing is not fast enough, different PUCCH resources can be used to send them separately.

[0072] Figure 1 1 is a block diagram 100 illustrating an exemplary bit field for multiple transport blocks and multiple PUCCH resources. Figure 1 As shown, the bit field may include a series of transport blocks (TBs) (e.g., TB0, TB1, TB2, TB3, TB4). The bit field may also include one or more PUCCH resources (e.g., PUCCH0, PUCCH1).

[0073] The minimum A-CSI processing delay may be referred to as "X", where all triggered A-CSI may be divided into two parts, the first part may include one or more first A-CSI feedbacks corresponding to the minimum processing delay "X", the first A-CSI feedback may be multiplexed on the HARQ-ACK PUCCH carrying the HARQ-ACK codebook feedback, the HARQ-ACK PUCCH may include Figure 1The second part may include one or more second A-CSI feedbacks, which do not meet the minimum processing delay X before the starting OFDM symbol of the first PUCCH resource, so the one or more second A-CSI feedbacks may be included in another PUCCH resource (e.g., such as Figure 1 PUCCH1) shown.

[0074] Which PUCCH resource is used as the second PUCCH resource, and at which time unit or from which time unit the terminal feeds back the second PUCCH to the base station (the time unit may be referred to as the first time unit) may be determined based on any of the following situations.

[0075] In the first case, the above determination may include determining that the second PUCCH resource is a HARQ-ACK PUCCH resource corresponding to the next HARQ-ACK codebook feedback, which HARQ-ACK PUCCH resource corresponds to the next HARQ-ACK codebook feedback indicated by the next last DL grant, and the first time unit is a time unit or a starting time unit for sending the next HARQ-ACK codebook, which may be indicated by the "PDSCH-to-HARQ feedback timing indicator" field in the last DL grant of the next HARQ-ACK codebook.

[0076] In the second case, the above determination can be based on the indication of the triggering corresponding A-CSI feedback in the DCI or the last DL grant. The PUCCH resource indicator field can be represented by the DCI that triggers the corresponding A-CSI feedback, or indicated by the last DL grant to indicate the second PUCCH resource. The CSI timing indicator field can be represented by the DCI that triggers the corresponding A-CSI feedback, or by the last DL grant used to indicate the first time unit. The terminal sends the corresponding A-CSI feedback in the second PUCCH resource indicated by the PUCCH resource indication field, and / or the terminal sends the corresponding A-CSI feedback in the time unit indicated by the A-CSI timing indicator field, or sends the corresponding A-CSI feedback starting from the time unit indicated by the A-CSI timing indicator field.

[0077] In some embodiments, the A-CSI timing indicator field may indicate a time interval between an end time unit of receiving the DCI indicating the A-CSI timing indicator and a start time unit of sending the second PUCCH resource.

[0078] In some other embodiments, the A-CSI timing indicator field may indicate a time interval between an end time unit of a PDSCH transmission scheduled or activated by a DCI (containing an A-CSI timing indicator) and a start time unit for sending a second PUCCH resource.

[0079] The second A-CSI feedback may be limited by the second PUCCH resource and the first time unit. Therefore, when certain conditions are met, the terminal may cancel the second A-CSI feedback. The condition may include an A-CSI feedback cancellation time predefined by the system or semi-statically configured by the base station, which may be referred to as the first time threshold (in units of time slots / sub-time slots / symbols). When the time interval between the first time unit and the second time unit is greater than the first time threshold, a trigger is performed.

[0080] The condition may also include that the second PUCCH resource and / or the first time unit are not indicated in the DL grant triggering the second A-CSI feedback.

[0081] The condition may further include that the first A-CSI feedback carried in the HARQ-ACK PUCCH may correspond to the next HARQ-ACK codebook, and the first A-CSI feedback and the second A-CSI feedback include the same CSI report.

[0082] The condition may also include that the second A-CSI feedback includes the same A-CSI report sent by the terminal in the first PUCCH resource.

[0083] The condition may also include that the second A-CSI feedback and the most recent first A-CSI feedback include A-CSI reports on one or more same carriers.

[0084] The condition may further include that at least one CSI report of the most recent first A-CSI feedback corresponds to the same trigger state as the A-CSI report of the second A-CSI feedback.

[0085] Specifically, the second time unit can be any one of the following items: the end time unit of receiving DCI (indicating an A-CSI timing indicator), the end time unit of PDSCH transmission scheduled or activated by DCI (containing an A-CSI timing indicator), the end time unit of sending the first PUCCH resource, and the start time unit of sending the first PUCCH resource.

[0086] Example 2

[0087] Example embodiment 2 may include providing an independent indication of which PUCCH resource A-CSI should be fed back. A-CSI feedback may be triggered based on a DL grant sent by the base station to the terminal and / or whether the terminal's decoding decision result for the PDSCH scheduled by the DL grant is NACK. Once the terminal believes that it has been triggered to feedback A-CSI, the terminal may feed back A-CSI to the base station.

[0088] The base station may indicate to the terminal which PUCCH resource to use to feedback A-CSI in the DL grant that triggers A-CSI feedback. Such indication may include a base station dynamic indication method, which may include adding a PUCCH resource indicator field for CSI in the DL grant that triggers A-CSI feedback, which field may be called a first PUCCH resource indicator field and indicates the PUCCH resource used to feedback A-CSI.

[0089] The above indication may also include a semi-static configuration of the base station. Aperiodic CSI report type feedback on PUCCH may be added. In particular, periodicOnPUCCH may be added as a new reportConfigType.

[0090] The base station may also configure the pucch-csi-resourcelist in the specific configuration of aperiodicOnPUCCH, and configure one or more PUCCH resources for A-CSI feedback in the pucch-csi-resourcelist. If the terminal confirms that A-CSI feedback has been triggered, the terminal selects a suitable PUCCH resource from the pucch-csi-resourcelist of aperiodicOnPUCCH to feedback A-CSI. Specifically, if multiple PUCCH resources are included in the pucch-csi-resourcelist of aperiodicOnPUCCH, the terminal may select a suitable PUCCH resource based on the load size of the A-CSI feedback, the maximum code rate supported by certain PUCCH resources configured by RRC signaling, and the maximum number of PRBs that can be used for each PUCCH resource.

[0091] The base station may indicate to the terminal in which time unit the PUCCH resources carrying A-CSI feedback are sent in the DL grant that triggers A-CSI feedback, wherein the time unit may include a time slot, a sub-time slot, or an OFDM symbol. This may include adding a "ReportOffset indicator" field to the DL grant that triggers A-CSI. This field may indicate which of multiple candidate ReportSlotOffsets configured by the base station through RRC signaling is used as the time interval from the DL grant reception time unit to the PUCCH transmission time unit carrying A-CSI feedback. The DL grant is a DL grant that triggers A-CSI feedback. Specifically, multiple candidate ReportSlotOffsets may be configured by the base station through RRC configured reportSlotOffsetList of CSI-ReportConfig of associatedReportConfigInfoList of triggerState.

[0092] Indicating to the terminal in the DL grant that triggers A-CSI feedback in which time unit the PUCCH resource carrying A-CSI feedback is sent can also include adding a SlotOffset field to the DL grant that triggers A-CSI feedback. This field can dynamically indicate the time interval between the transmission time unit of the PUCCH carrying A-CSI and the transmission time unit of the PUCCH carrying the HARQ-ACK codebook. Specifically, the SlotOffset field can be configured as 0 or 1 or 2 bits through RRC signaling. When configured as 2 bits, the 4 states that can be indicated correspond to: -1 time unit, 0 time unit, 1 time unit, and 2 time units, respectively. A time unit may include a time slot, a subslot, or an OFDM symbol.

[0093] The PDSCH-to-HARQ feedback timing indicator field in the DL Grant that triggers A-CSI may be used to indicate in which time unit the PUCCH carrying A-CSI is sent, ie, HARQ-ACK and A-CSI may be sent in the same time unit.

[0094] Example 3

[0095] In example embodiment 3, A-CSI feedback may be provided on PUSCH.

[0096] A-CSI feedback can be triggered based on the DL grant sent by the base station to the terminal and / or whether the decoding decision result of the terminal for the PDSCH scheduled by the DL grant is NACK. Once the terminal determines that the A-CSI feedback has been triggered, the terminal can feedback the A-CSI to the base station. The terminal can send A-CSI feedback to the base station on the PUSCH. Specifically, the A-CSI can be sent to the base station on a configured grant PUSCH (configured grant PUSCH) of a semi-static configuration. The configured grant PUSCH may include PUSCH time-frequency resources configured by the base station through RRC signaling, and may not need to be scheduled by a DL grant before each transmission.

[0097] The terminal may determine at least one configured permitted PUSCH for sending A-CSI by any of a variety of methods. Method 1 may include the base station configuring one or more groups of configured permitted PUSCHs for carrying A-CSI through RRC signaling. Method 2 may include that any group of configured permitted PUSCHs can carry A-CSI, and when the terminal is triggered to feedback A-CSI, the terminal may use the most recent resource transmission opportunity of a configured permitted PUSCH to send A-CSI feedback. Method 3 may include the base station adding a field in the DL grant to dynamically indicate which group of configured permitted PUSCHs and / or which transmission opportunity the terminal uses to feedback A-CSI.

[0098] Example 4

[0099] Example embodiment 4 may relate to how to organize fields when A-CSI is fed back on PUCCH. Figure 2 is an exemplary bit field 200 indicating HARQ-ACK information and A-CSI information. For example, for the method described in Example Embodiment 1, Figure 1 The specific UCI field on PUCCH 0 in Figure 2 Shown in.

[0100] For HARQ-ACK bits, encoding can be performed independently and several CRC check bits can be added. For A-CSI bits, encoding can be performed independently and several CRC check bits can be added. HARQ-ACK bits are HARQ-ACK information bits. A-CSI bits are CSI report bits, which can include one or more first A-CSI feedbacks and / or one or more second A-CSI feedbacks.

[0101] After receiving PUCCH 0, the base station first decodes the HARQ-ACK bit, and then determines the number of first A-CSI feedbacks included in the A-CSI bit based on the HARQ-ACK bit. If there are other A-CSI feedbacks in addition to all the first A-CSI feedbacks in the A-CSI bit, the base station can determine that these A-CSI feedbacks can be second A-CSI feedbacks.

[0102] Based on whether the base station has received all A-CSI feedbacks triggered in one or more DL grants corresponding to the previous HARQ-ACK codebook, the base station can also determine whether the A-CSI bits in PUCCH 0 include second A-CSI feedback, and if the second A-CSI feedback is included in the A-CSI bits, the base station can determine the number of second A-CSI feedbacks included in the A-CSI bits.

[0103] If the A-CSI bit includes multiple first A-CSI feedbacks, these first A-CSI feedbacks may be concatenated in the order in which they are triggered. Figure 3 is an example block diagram showing a bit field 300 of the A-CSI bits. Figure 3 As shown, the A-CSI bits may include three first A-CSI feedbacks, which may be A-CSI 0, A-CSI 1, and A-CSI 2. The first DL grant scheduling that triggers A-CSI 0 or the PDSCH scheduled by the first DL grant must be sent before the second DL grant scheduling that triggers A-CSI 1 or the PDSCH scheduled by the second DL grant, and the second DL grant scheduling that triggers A-CSI 1 or the PDSCH scheduled by the second DL grant must be sent before the third DL grant that triggers A-CSI 2 or the PDSCH scheduled by the third DL grant.

[0104] When the terminal concatenates multiple first A-CSI feedbacks, at least one of the following methods is adopted. For a missed GL grant, a specific value may be provided as the A-CSI feedback, such as an all-zero bit string of length n, where n is a positive integer. For a DL Grant that triggers A-CSI feedback and a missed DL Grant, the terminal organizes the A-CSI feedback in the same order as the HARQ-ACK bits of the HARQ-ACK dynamic codebook to construct the A-CSI bits.

[0105] In some embodiments, for a PDSCH TB indicated as NACK in the HARQ-ACK codebook, if the base station does not trigger A-CSI feedback in the DL Grant for scheduling the PDSCH TB, but the terminal feeds back the first A-CSI, it may indicate that the terminal missed the DL Grant for scheduling the PDSCH TB. In this case, the base station may ignore or not use the first A-CSI indicated by the terminal.

[0106] If the A-CSI bits include multiple second A-CSI feedbacks, these second A-CSI feedbacks are A-CSI feedbacks that should have been fed back on the most recent HARQ-ACK PUCCH resource. Due to the time delay problem, there is not enough time to feed back these A-CSIs on the most recent HARQ-ACK PUCCH resource.

[0107] Example 5

[0108] Example embodiment 5 may involve determining a frequency range for A-CSI feedback. A-CSI feedback may be triggered based on whether the decoding result of the PDSCH scheduled by the DL grant is NACK. Once the terminal determines that A-CSI feedback has been triggered, the terminal may feed back A-CSI to the base station. The terminal may send A-CSI feedback to the base station on PUCCH resources.

[0109] The A-CSI feedback may include channel quality information for one or more frequency domain resource units, and the frequency domain resource unit may be a carrier, a downlink BWP, a subband, or a PRB.

[0110] The specific channel quality information of which frequency domain resource units are included may be determined based on at least one of the following items: frequency domain resource units included in the frequency domain resource allocation whose most recent PDSCH decoding result is NACK, or frequency domain resource units included in one or more active SPS PDSCH frequency domain resource allocations.

[0111] Example 6

[0112] Example embodiment 6 may relate to the priority of A-CSI feedback. If PUCCH resources cannot send all A-CSI reports that require feedback, when the maximum code rate of PUCCH and / or the maximum number of available PRBs of PUCCH resources are semi-statically configured by the base station, the UE can be sorted according to priority and ensure feedback of high-priority A-CSI reports.

[0113] A-CSI can be prioritized based on the CSI report priority indicator field in the DL grant that triggers A-CSI indicated by the base station, and the terminal can determine the priority of the A-CSI report based on the indication and send a higher priority A-CSI report when the payload is limited.

[0114] In some embodiments, the prioritization may include determining the priority of the A-CSI report according to the indication of the priority indicator field in the DL grant, and sending a high priority A-CSI report first when the payload is limited.

[0115] In some embodiments, it is ensured that at least one A-CSI report is fed back to the base station for different carriers / BWPs, and it is ensured that the priority of the nth A-CSI report for the same carrier / BWP is lower than the priority of the A-CSI report of the carrier / BWP with only one A-CSI report, and n is a positive integer greater than 1.

[0116] In some instances, the embodiment described in Example Embodiment 4 may include an order of A-CSI bits, wherein the priority of the front-end position A-CSI report in the A-CSI bits is higher than the priority of the back-end position A-CSI report, i.e., the earlier the A-CSI is triggered, the higher the priority.

[0117] In some embodiments, the priority may be related to the triggering mode of A-CSI. Different A-CSI triggering modes may have different priorities, which may be predefined or configured by the base station through RRC signaling. For example, if A-CSI needs to be triggered based on whether the decoding result of PDSCH is NACK, then the priority of its A-CSI report is higher than the priority of A-CSI report of A-CSI that does not need to be triggered by whether the decoding result of PDSCH is NACK.

[0118] In some embodiments, the earlier the A-CSI is triggered, the higher the priority of the corresponding CSI report.

[0119] In some embodiments, the later the A-CSI is triggered, the higher the priority of the corresponding CSI report.

[0120] For A-CSI that needs to be triggered based on whether the PDSCH decoding result is NACK, the earlier the A-CSI is triggered, the higher the priority of its A-CSI report. For A-CSI that does not need to be triggered based on whether the PDSCH decoding result is NACK, the later the A-CSI is triggered, the higher the priority of its A-CSI report.

[0121] Figure 4 400 is a block diagram of an example method for triggering feedback of channel state information. The method may include receiving, by a terminal, a first message from a wireless communication node (block 402). The first message may include a DL grant message as described herein. The first message may trigger feedback of A-CSI information to the wireless communication node, which may include a base station as described herein.

[0122] The method may also include sending, by the terminal via the first channel, a feedback message to the wireless communication node, the feedback message including at least one set of channel state information (block 404). The feedback message may provide A-CSI information to the wireless communication node.

[0123] In some embodiments, the method includes multiplexing, by the terminal, at least one set of channel state information and hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback information in a first resource of the first channel, wherein the first channel is a physical uplink control channel (PUCCH), and wherein the first resource is a first PUCCH resource of the first channel, and the first PUCCH resource is indicated by first downlink control information (DCI).

[0124] In some embodiments, the first channel is PUCCH, wherein the feedback message is included in a second PUCCH resource, the second PUCCH resource includes a second type of channel state information feedback, and wherein the second PUCCH resource is indicated by the first DCI, or by a second DCI that triggers the second type of channel state information feedback.

[0125] In some embodiments, the first message includes a PUCCH resource indicator field, which is included in the DCI, wherein the feedback message is sent to the wireless communication node via the PUCCH resource indicated by the PUCCH resource indicator field included in the DCI.

[0126] In some embodiments, the first message includes a time slot offset indicator field, which is included in the DCI, wherein the feedback message is sent to the wireless communication node via the first channel in a time slot, and wherein the time slot is indicated by the time slot offset indicator field included in the DCI.

[0127] In some embodiments, the time slot offset indicator field includes any one of the following items: a first time offset between the time unit for sending the first message and the time unit for receiving the feedback message in the first channel, a second time offset between the end time unit for sending the first message and the start time unit for receiving the feedback message in the first channel, a third time offset between the time unit for receiving the HARQ-ACK feedback information in the first channel and the time unit for receiving the feedback message, and a fourth time offset between the end time unit for receiving the HARQ-ACK feedback information in the first channel and the start time unit for receiving the feedback message.

[0128] In some embodiments, the feedback message is sent by the terminal in response to the expiration of a processing delay calculated from the receipt of the first message, wherein the processing delay includes the number of time units between the end time unit of reception of the first message and the start time unit of the feedback message sent via the first channel.

[0129] In some embodiments, the at least one group of channel state information includes a first type of channel state information (CSI) feedback, the first type of CSI feedback including a series of CSI reports prepared by the terminal, and wherein the time interval between the end time unit of the first DCI and the start time unit of the first PUCCH resource is equal to or greater than the processing delay, and wherein the first type of CSI feedback is sent by the terminal in the first PUCCH resource.

[0130] In some embodiments, the at least one set of channel state information includes a second type of CSI feedback, which includes a series of CSI reports that are not ready to be sent when the terminal sends the first PUCCH resource, and wherein the time interval between the end time unit of the first DCI and the start time unit of the second PUCCH resource is greater than the processing delay.

[0131] In some embodiments, if the terminal does not recognize any information indicating the second type of CSI feedback, the terminal ignores the indication of the second PUCCH resource indicated in the DCI triggering the CSI feedback.

[0132] In some embodiments, the method includes canceling the second type of CSI feedback by the terminal based on at least one of the following items: determining that the duration between the end time unit of the first message and the start time unit of the first channel is greater than a predefined first time threshold, determining that the time interval between the end time unit of the first message and the start time unit of the first channel is greater than the first time threshold configured by the wireless communication node through RRC signaling, determining that the first message does not include a PUCCH resource indicator, determining that there is no time slot offset indicator in the first message, determining that the trigger state indicated by a subsequent DCI corresponds to the trigger state in the first message, and determining that the CSI report included in a subsequent type of CSI feedback corresponds to the CSI report included in the first message.

[0133] In some embodiments, the first channel is a configured granted PUSCH, wherein the at least one set of channel state information is included in the configured granted PUSCH.

[0134] In some embodiments, the method includes determining, by the terminal, that the configuration of the configured licensed PUSCH is one of multiple configurations of licenses for a first type of configuration, or one of multiple configurations of licenses for a second type of configuration, wherein the license of the first type of configuration or the license of the second type of configuration is predefined by the terminal or configured by the wireless communication node.

[0135] In some embodiments, the at least one set of channel state information is sent in the nearest available resource of the configured granted PUSCH.

[0136] In some embodiments, the at least one set of channel state information is sent in a configured granted PUSCH indicated by the DCI.

[0137] In some embodiments, the method includes, by the terminal, concatenating multiple groups of channel state information according to an order in which each group of channel state information is triggered, wherein each group of channel state information includes the first type of CSI feedback or the second type of CSI feedback.

[0138] In some embodiments, the method includes determining, by the terminal, that at least one group of channel state information exceeds the maximum code rate of the PUCCH resources associated with the feedback message and / or the maximum number of available physical resource blocks (PRBs) of the PUCCH resources associated with the feedback message; and sorting, by the terminal, each group of channel state information according to the order in which each group of channel state information is triggered.

[0139] In some embodiments, the method includes: checking, by the terminal, the first message to identify a CSI report priority indication field that triggers the sending of the feedback message; determining, by the terminal, that the priority of a first group of channel state information is higher than the priority of a second group of channel state information; and sending, by the terminal based on determining that the priority of the first group of channel state information is higher than the priority of the second group of channel state information, a feedback message including the first group of channel state information.

[0140] In some embodiments, the method includes, by the terminal, checking the first message to identify a downlink (DL) grant priority indicator; determining, by the terminal, a priority of each set of channel state information; and, by the terminal, adding a set of channel state information having a highest priority to the feedback message.

[0141] In some embodiments, the first message includes information indicating a processing delay in sending the feedback message, wherein the processing delay is provided as any one of: a time slot, a sub-time slot, and / or an orthogonal frequency-division multiplexing (OFDM) symbol.

[0142] In some embodiments, the method includes dividing, by the terminal, multiple instances of each set of channel state information into multiple PUCCH resources, wherein the multiple PUCCH resources are included in the feedback message.

[0143] In some embodiments, the first message is a downlink (DL) grant message, which includes a PUCCH resource indicator added to a channel state information (CSI) field of the first message, wherein the added PUCCH resource indicator indicates a first PUCCH resource and triggers the terminal to send each group of channel state information in the first PUCCH resource via the feedback message.

[0144] In some embodiments, the method includes, in response to determining that the first message includes an indication for indicating that at least one set of channel state information is to be sent in the feedback message, selecting a PUCCH resource from a list of non-periodic PUCCH resources to feedback at least one set of channel state information in the feedback message.

[0145] In some embodiments, the feedback message includes at least one HARQ-ACK information bit, at least one HARQ-ACK cyclic redundancy error (CRC) check bit, at least one aperiodic channel state information (A-CSI) bit, and at least one A-CSI CRC check bit.

[0146] In some embodiments, the at least one HARQ-ACK information bit indicates that a PDSCH transport block (TB) is NACK.

[0147] In some embodiments, the feedback message includes channel quality information for one or more frequency domain resource units, wherein the frequency domain resource unit includes any one of the following items: a downlink bandwidth part (BWP), a subband, and a physical resource block (PRB).

[0148] In another embodiment, a method for wireless communication includes: sending a first message by a wireless communication node to a terminal, the first message including an indication for sending at least one set of channel state information to the wireless communication node; and in response to sending the first message to the terminal, receiving a feedback message from the terminal via a first channel by the wireless communication node.

[0149] In some embodiments, the feedback message includes at least one set of channel state information multiplexed with hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback information in a first resource of the first channel, wherein the first channel is a physical uplink control channel (PUCCH), and wherein the first resource is a first PUCCH resource of the first channel, and the first PUCCH resource is indicated by first downlink control information (DCI).

[0150] In some embodiments, the first channel is PUCCH, wherein the feedback message is included in a second PUCCH resource, the second PUCCH resource includes a second type of channel state information feedback, and wherein the second PUCCH resource is indicated by the first DCI, or by a second DCI that triggers the second type of channel state information feedback.

[0151] In some embodiments, the first message includes a PUCCH resource indicator field, which is included in the DCI, wherein the feedback message is sent to the wireless communication node via the PUCCH resource indicated by the PUCCH resource indicator field included in the DCI.

[0152] In some embodiments, the first message includes a time slot offset indicator field, which is included in the DCI, wherein the feedback message is sent to the wireless communication node via the first channel in a time slot, and wherein the time slot is indicated by the time slot offset indicator field included in the DCI.

[0153] In some embodiments, the time slot offset indicator field includes any one of the following items: a first time offset between the time unit for receiving the first message and the time unit for sending the first message in the first channel, a second time offset between the end time unit for receiving the first message and the start time unit for sending the feedback message in the first channel, a third time offset between the time unit for sending the HARQ-ACK feedback information in the first channel and the time unit for sending the feedback message, and a fourth time offset between the end time unit for sending the HARQ-ACK feedback information in the first channel and the start time unit for sending the first message.

[0154] In some embodiments, the feedback message is sent by the terminal in response to the expiration of a processing delay calculated from the receipt of the first message, wherein the processing delay includes the number of time units between the end time unit of reception of the first message and the start time unit of the feedback message sent via the first channel.

[0155] In some embodiments, the at least one group of channel state information includes a first type of channel state information (CSI) feedback, the first type of CSI feedback includes a series of CSI reports prepared by the terminal, and wherein the time interval between the end time unit of the first DCI and the start time unit of the first PUCCH resource is equal to or greater than the processing delay, and wherein the first type of CSI feedback is sent by the terminal in the first PUCCH resource.

[0156] In some embodiments, the at least one set of channel state information includes a second type of CSI feedback, which includes a series of CSI reports that are not ready to be sent when the terminal sends the first PUCCH resource, and wherein the time interval between the end time unit of the first DCI and the start time unit of the second PUCCH resource is greater than the processing delay.

[0157] In some embodiments, the first channel is a configured granted PUSCH, wherein the at least one set of channel state information is included in the configured granted PUSCH.

[0158] In some embodiments, the at least one set of channel state information is sent in a configured granted PUSCH indicated by the DCI.

[0159] In some embodiments, the wireless communication node configures at least one configured permitted PUSCH resource as the first channel through RRC signaling, wherein the configured permitted PUSCH resource can be a second type of configured permitted PUSCH resource or a first type of configured permitted PUSCH resource.

[0160] In some embodiments, the wireless communication node indicates available configured granted PUSCH resources in the DCI triggering the feedback message, where the available configured granted PUSCH resources are used to send at least one set of channel state information.

[0161] In some embodiments, the wireless communication node configures a type of CSI feedback, and the type of CSI feedback can be fed back in the configured granted PUSCH via RRC signaling, wherein the type of CSI feedback is a first type of CSI feedback or a second type of CSI feedback.

[0162] Example Wireless System

[0163] Figure 5 An example of a wireless communication system is shown, which can apply the technology according to one or more embodiments of the present technology. The wireless communication system 500 may include one or more base stations (BS) 505a, 505b, one or more wireless devices 510a, 510b, 510c, 510d, and a core network 525. The base stations 505a, 505b can provide wireless services to the wireless devices 510a, 510b, 510c and 510d in one or more wireless sectors. In some embodiments, the base stations 505a, 505b include directional antennas to generate two or more directional beams to provide wireless coverage in different sectors.

[0164] The core network 525 can communicate with one or more base stations 505a, 505b. The core network 525 provides connections with other wireless communication systems and wired communication systems. The core network may include one or more service subscription databases to store information related to wireless devices 510a, 510b, 510c and 510d that subscribe to services. The first base station 505a can provide wireless services based on a first radio access technology, and the second base station 505b can provide wireless services based on a second radio access technology. Depending on the deployment scenario, base stations 505a and 505b can be located at the same location, or can be installed separately on site. Wireless devices 510a, 510b, 510c and 510d can support a variety of different radio access technologies.

[0165] In some implementations, a wireless communication system may include multiple networks that employ different wireless technologies. A dual-mode or multi-mode wireless device includes two or more wireless technologies that can be used to connect to different wireless networks.

[0166] Figure 6 6 is a block diagram representing a portion of a hardware platform. A hardware platform 605, such as a network device or base station or a wireless device (or UE), may include a processor electronic device 610, such as a microprocessor that implements one or more of the techniques presented in this document. The hardware platform 605 may include a transceiver electronic device 615 to send and / or receive wired or wireless signals through one or more communication interfaces (e.g., an antenna 620 or a wired interface). The hardware platform 605 may implement other communication interfaces using defined protocols for sending and receiving data. The hardware platform 605 may include one or more memories (not explicitly shown) configured to store information such as data and / or instructions. In some embodiments, the processor electronic device 610 may include at least a portion of the transceiver electronic device 615. In some embodiments, at least some of the disclosed techniques, modules, or functions are implemented by the hardware platform 605.

[0167] in conclusion

[0168] Based on the above description, it should be understood that the specific embodiments of the presently disclosed technology are described herein for illustrative purposes, but various modifications can be made without departing from the scope of the present invention. Therefore, the technology of the present disclosure is not limited except in the appended claims.

[0169] The disclosed and other embodiments, modules and functional operations in this document may be implemented in digital electronic circuits, or in computer software, firmware or hardware, including the structures disclosed in this document and their structural equivalents, or in a combination of one or more of them. The disclosed and other embodiments may be implemented as one or more computer program products, i.e., one or more modules of computer program instructions encoded on a computer-readable medium, for execution by a data processing device or for controlling the operation of the data processing device. The computer-readable medium may be a machine-readable storage device, a machine-readable storage substrate, a memory device, a combination of substances that implement a machine-readable propagation signal, or a combination of one or more of them. The term "data processing device" includes all devices, devices and machines for processing data, including, for example, a programmable processor, a computer, or multiple processors or computers. In addition to hardware, the device may include code that creates an execution environment for the computer program in question, for example, code that constitutes a processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them. A propagation signal is an artificially generated signal, such as a machine-generated electrical, optical or electromagnetic signal, which is generated to encode information for transmission to a suitable receiver device.

[0170] A computer program (also referred to as a program, software application, script, or code) can be written in any form of programming language, including compiled or interpreted languages, and it can be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program may be stored in a portion of a file that stores other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program in question, or in multiple collaborative files (e.g., files storing one or more modules, subroutines, or code portions). A computer program may be deployed to execute on one computer, or on multiple computers located in one location or distributed in multiple locations and interconnected by a communication network.

[0171] The processes and logic flows described in this document can be performed by one or more programmable processors executing one or more computer programs to perform functions by operating on input data and generating output. The processes and logic flows can also be performed by special purpose logic circuits, and the apparatus can also be implemented as special purpose logic circuits, such as FPGAs (field programmable gate arrays) or ASICs (application specific integrated circuits).

[0172] Processors suitable for executing computer programs include, for example, general-purpose and special-purpose microprocessors, and any one or more processors of any type of digital computer. Typically, the processor will receive instructions and data from a read-only memory or a random access memory or both. The basic elements of a computer are a processor for executing instructions and one or more memory devices for storing instructions and data. Typically, a computer will also include one or more mass storage devices for storing data, such as magnetic disks, magneto-optical disks, or optical disks, or be operably coupled to one or more mass storage devices for storing data to receive data from it or transfer data to it, or both. However, a computer need not have such a device. Computer-readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media, and memory devices, including, for example, semiconductor memory devices, such as EPROM, EEPROM, and flash memory devices; magnetic disks, such as internal hard disks or removable disks; magneto-optical disks; and CD ROM and DVD-ROM disks. The processor and memory may be supplemented by or incorporated into a dedicated logic circuit.

[0173] Although this patent document contains many details, these details should not be interpreted as limitations on the scope of any invention or the scope that may be claimed, but should be interpreted as descriptions of features that may be specific to a particular embodiment of a particular invention. Certain features described in the context of a separate embodiment in this patent document may also be implemented in combination in a single embodiment. On the contrary, the various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments. In addition, although features may be described above as working in certain combinations, and even initially claimed as such, one or more features from the claimed combination may be removed from the combination in some cases, and the claimed combination may be directed to a sub-combination or a variation of the sub-combination.

[0174] Similarly, while operations are depicted in a particular order in the drawings, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed to achieve desired results. Furthermore, the separation of various system components in the embodiments described in this patent document should not be understood as requiring such separation in all embodiments.

[0175] Only a few implementations and examples are described, and other implementations, improvements, and variations may be performed based on what is described and shown in this patent document.

Claims

1. A method for wireless communication, comprising: Receiving, by a terminal, at least a first message from a wireless communication node, the first message comprising an indication of at least one set of channel state information (CSI); checking, by the terminal, the first message to identify a channel state information (CSI) report priority indication field that triggers sending of a feedback message; Determining, by the terminal, that a priority of the first group of channel state information is higher than a priority of the second group of channel state information; and The terminal sends a feedback message to the wireless communication node via a first channel in response to receiving at least the first message from the wireless communication node, wherein the feedback message via the first channel includes multiple groups of channel state information (CSI), the multiple groups of channel state information (CSI) are concatenated according to the order in which each group of channel state information is triggered, the multiple groups of channel state information (CSI) include at least the first group of channel state information, and based on a channel state information (CSI) report priority indication field, the priority of the first group of channel state information is higher than the priority of the second group of channel state information; The multiple sets of channel state information (CSI) concatenated in the feedback message include front-end position CSI, and the priority of the front-end position CSI is higher than the priority of the back-end position CSI.

2. The method according to claim 1, further comprising: The terminal multiplexes the at least one set of channel state information and hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback information in a first resource of the first channel, wherein the first channel is a physical uplink control channel (PUCCH), and wherein the first resource is a first physical uplink control channel (PUCCH) resource of the first channel, and the first physical uplink control channel (PUCCH) resource is indicated by first downlink control information (DCI).

3. The method according to claim 1, wherein the first channel is a physical uplink control channel (PUCCH), wherein the feedback message is included in a second physical uplink control channel (PUCCH) resource, the second physical uplink control channel (PUCCH) resource includes a second type of channel state information feedback, and wherein the second physical uplink control channel (PUCCH) resource is indicated by a first downlink control information (DCI) or by a second downlink control information (DCI) that triggers the second type of channel state information feedback.

4. The method according to claim 1, wherein the first message includes a physical uplink control channel (PUCCH) resource indicator field, the physical uplink control channel (PUCCH) resource indicator field is included in downlink control information (DCI), wherein, The feedback message is sent to the wireless communication node via a physical uplink control channel (PUCCH) resource, where the physical uplink control channel (PUCCH) resource is indicated by the physical uplink control channel (PUCCH) resource indicator field included in the downlink control information (DCI).

5. The method of claim 1 , wherein the first message comprises a time slot offset indicator field, the time slot offset indicator field being included in downlink control information (DCI), wherein the feedback message is sent to the wireless communication node via the first channel in a time slot, and wherein the time slot is indicated by the time slot offset indicator field included in the downlink control information (DCI).

6. According to the method according to claim 5, the time slot offset indicator field includes any one of the following items: a first time offset between a time unit for receiving the first message and a time unit for sending the feedback message in the first channel, a second time offset between an end time unit for receiving the first message and a start time unit for sending the feedback message in the first channel, a third time offset between a time unit for sending a hybrid automatic repeat request confirmation (HARQ-ACK) feedback information in the first channel and a time unit for sending the feedback message, and a fourth time offset between an end time unit for sending a hybrid automatic repeat request confirmation (HARQ-ACK) feedback information in the first channel and a start time unit for sending the feedback message.

7. The method according to claim 1, wherein: The feedback message is sent by the terminal in response to expiration of a processing delay calculated from the receipt of the first message, wherein the processing delay includes the number of time units between an end time unit of reception of the first message and a start time unit of the feedback message sent via the first channel.

8. A method according to claim 7, wherein the at least one group of channel state information includes a first type of channel state information (CSI) feedback, the first type of channel state information (CSI) feedback includes a series of channel state information (CSI) reports prepared by the terminal, and wherein the time interval between the end time unit of the first downlink control information (DCI) and the start time unit of the first physical uplink control channel (PUCCH) resource is equal to or greater than the processing delay, and wherein the first type of channel state information (CSI) feedback is sent by the terminal in the first physical uplink control channel (PUCCH) resource.

9. The method according to claim 8, wherein the at least one group of channel state information includes a second type of channel state information (CSI) feedback, the second type of channel state information (CSI) feedback includes a series of channel state information (CSI) reports that are not ready to be sent when the terminal sends the first physical uplink control channel (PUCCH) resource, and wherein the time interval between the end time unit of the first downlink control information (DCI) and the start time unit of the second physical uplink control channel (PUCCH) resource is greater than the processing delay.

10. The method according to claim 9, wherein, when the terminal does not recognize any information indicating the second type of channel state information (CSI) feedback, the terminal ignores the indication of the second physical uplink control channel (PUCCH) resource indicated in the downlink control information (DCI) that triggers the channel state information (CSI) feedback.

11. The method according to claim 9 also includes, by the terminal, canceling the second type of channel state information (CSI) feedback based on at least one of the following items: determining that the duration between the end time unit of the first message and the start time unit of the first channel is greater than a predefined first time threshold, determining that the time interval between the end time unit of the first message and the start time unit of the first channel is greater than the first time threshold configured by the wireless communication node through RRC signaling, determining that the first message does not include a physical uplink control channel (PUCCH) resource indicator, determining that there is no time slot offset indicator in the first message, determining that the trigger state indicated by the subsequent downlink control information (DCI) corresponds to the trigger state in the first message, and determining that the channel state information (CSI) report included in the subsequent type of channel state information (CSI) feedback corresponds to the channel state information (CSI) report included in the first message.

12. The method of claim 1, wherein the first channel is a configured granted physical uplink shared channel (PUSCH), wherein the at least one set of channel state information is included in the configured granted physical uplink shared channel (PUSCH).

13. The method according to claim 12, further comprising: The terminal determines that the configured permitted physical uplink shared channel (PUSCH) is one of multiple permitted physical uplink shared channel (PUSCH) resources of the first type of configuration, or one of multiple permitted physical uplink shared channel (PUSCH) resources of the second type of configuration, wherein the permitted physical uplink shared channel (PUSCH) resources of the first type of configuration or the permitted physical uplink shared channel (PUSCH) resources of the second type of configuration are predefined or configured by the wireless communication node.

14. The method according to claim 12, wherein: The at least one set of channel state information is transmitted in a most recently available resource of the configured granted physical uplink shared channel (PUSCH) or in a configured granted physical uplink shared channel (PUSCH) resource indicated by the wireless communication node.

15. The method according to claim 12, wherein: The at least one set of channel state information is sent in a configured granted physical uplink shared channel (PUSCH) indicated by downlink control information (DCI).

16. The method according to claim 1, further comprising: The terminal determines that at least one group of channel state information exceeds the maximum code rate of the physical uplink control channel (PUCCH) resources associated with the feedback message and / or the maximum number of available physical resource blocks (PRBs) of the physical uplink control channel (PUCCH) resources associated with the feedback message; and the terminal sorts each group of channel state information according to the order in which each group of channel state information is triggered.

17. The method according to claim 1, further comprising: examining, by the terminal, the first message to identify a downlink (DL) grant priority indicator; Determining, by the terminal, a priority of each group of channel state information; as well as A group of channel state information with the highest priority is added to the feedback message by the terminal.

18. The method of claim 1, wherein the first message includes information indicating a processing delay during transmission of the feedback message, wherein the processing delay is provided as any one of: a time slot, a sub-time slot, and / or an orthogonal frequency division multiplexing (OFDM) symbol.

19. The method of claim 1, further comprising: The terminal divides multiple instances of each group of channel state information (CSI) reports into multiple physical uplink control channel (PUCCH) resources, wherein the multiple physical uplink control channel (PUCCH) resources are included in the feedback message.

20. The method of claim 1, wherein the first message is a downlink (DL) grant message, the downlink grant message comprising a physical uplink control channel (PUCCH) resource indicator added to a channel state information (CSI) field of the first message, wherein The added physical uplink control channel (PUCCH) resource indicator indicates a first physical uplink control channel (PUCCH) resource and triggers the terminal to send each group of channel state information via the feedback message in the first physical uplink control channel (PUCCH) resource.

21. The method according to claim 1, further comprising: In response to determining that the first message includes an indication for indicating that at least one set of channel state information is sent in the feedback message, a physical uplink control channel (PUCCH) resource is selected from a list of non-periodic physical uplink control channel (PUCCH) resources to feedback at least one set of channel state information in the feedback message.

22. The method of claim 1, wherein the feedback message comprises at least one hybrid automatic repeat request acknowledgement (HARQ-ACK) information bit, at least one hybrid automatic repeat request acknowledgement (HARQ-ACK) cyclic redundancy error (CRC) check bit, at least one aperiodic channel state information (A-CSI) bit, and at least one aperiodic channel state information cyclic redundancy error (A-CSICRC) check bit.

23. The method of claim 22, wherein the at least one hybrid automatic repeat request acknowledgement (HARQ-ACK) information bit indicates that a physical downlink shared channel (PDSCH) transport block (TB) is NACK.

24. The method of claim 1, wherein the feedback message comprises channel quality information for one or more frequency domain resource units, wherein the one or more frequency domain resource units comprise any one of the following items: a downlink bandwidth part (BWP), a subband, and a physical resource block (PRB).

25. A method for wireless communication, comprising: Sending, by a wireless communication node, at least a first message to a terminal, the first message comprising an indication for instructing to send at least one set of channel state information to the wireless communication node, and a channel state information (CSI) report priority indication field; as well as In response to sending at least the first message to the terminal, the wireless communication node receives a feedback message from the terminal via a first channel; wherein the feedback message via the first channel includes multiple groups of channel state information (CSI), the multiple groups of channel state information (CSI) are concatenated according to the order in which each group of channel state information (CSI) is triggered, the multiple groups of channel state information (CSI) include at least a first group of channel state information, and based on a report priority indication field of the channel state information (CSI), the priority of the first group of channel state information is higher than the priority of the second group of channel state information; The multiple sets of channel state information (CSI) concatenated in the feedback message include front-end position CSI, and the priority of the front-end position CSI is higher than the priority of the back-end position CSI.

26. A method according to claim 25, wherein the feedback message includes the at least one set of channel state information, and the at least one set of channel state information is multiplexed with hybrid automatic repeat request confirmation (HARQ-ACK) feedback information in the first resource of the first channel, wherein the first channel is a physical uplink control channel (PUCCH), and wherein the first resource is a first physical uplink control channel (PUCCH) resource of the first channel, and the first physical uplink control channel (PUCCH) resource is indicated by a first downlink control information (DCI).

27. A method according to claim 25, wherein the first channel is a physical uplink control channel (PUCCH), wherein the feedback message is included in a second physical uplink control channel (PUCCH) resource, the second physical uplink control channel (PUCCH) resource includes a second type of channel state information feedback, and wherein the second physical uplink control channel (PUCCH) resource is indicated by a first downlink control information (DCI) or by a second downlink control information (DCI) that triggers the second type of channel state information feedback.

28. The method of claim 25, wherein the first message comprises a physical uplink control channel (PUCCH) resource indicator field, the physical uplink control channel (PUCCH) resource indicator field being included in downlink control information (DCI), wherein: The feedback message is sent to the wireless communication node via a physical uplink control channel (PUCCH) resource, where the physical uplink control channel (PUCCH) resource is indicated by the physical uplink control channel (PUCCH) resource indicator field included in the downlink control information (DCI).

29. The method according to claim 25, wherein: The first message includes a time slot offset indicator field, which is included in downlink control information (DCI), wherein the feedback message is sent to the wireless communication node via the first channel in a certain time slot, and wherein the time slot is indicated by the time slot offset indicator field included in the downlink control information (DCI).

30. The method of claim 29, wherein: The time slot offset indicator field includes any one of the following items: a first time offset between a time unit for sending the first message and a time unit for receiving the feedback message in the first channel, a second time offset between an end time unit for sending the first message and a start time unit for receiving the feedback message in the first channel, a third time offset between a time unit for receiving hybrid automatic repeat request confirmation (HARQ-ACK) feedback information in the first channel and a time unit for receiving the feedback message, and a fourth time offset between an end time unit for receiving hybrid automatic repeat request confirmation (HARQ-ACK) feedback information in the first channel and a start time unit for receiving the feedback message.

31. A method according to claim 25, wherein the feedback message is sent by the terminal in response to the expiration of a processing delay calculated from the receipt of the first message, wherein the processing delay includes the number of time units between the end time unit of the reception of the first message and the start time unit of the feedback message sent via the first channel.

32. A method according to claim 31, wherein the at least one group of channel state information includes a first type of channel state information (CSI) feedback, the first type of channel state information (CSI) feedback includes a series of channel state information (CSI) reports prepared by the terminal, and wherein the time interval between the end time unit of the first downlink control information (DCI) and the start time unit of the first physical uplink control channel (PUCCH) resource is equal to or greater than the processing delay, and wherein the first type of channel state information (CSI) feedback is sent by the terminal in the first physical uplink control channel (PUCCH) resource.

33. A method according to claim 32, wherein the at least one group of channel state information includes a second type of channel state information (CSI) feedback, the second type of channel state information (CSI) feedback includes a series of channel state information (CSI) reports that are not ready to be sent when the terminal receives the first physical uplink control channel (PUCCH) resource, and wherein the time interval between the end time unit of the first downlink control information (DCI) and the start time unit of the second physical uplink control channel (PUCCH) resource is greater than the processing delay.

34. The method of claim 25, wherein the first channel is a configured granted physical uplink shared channel (PUSCH), wherein the at least one set of channel state information is included in the configured granted physical uplink shared channel (PUSCH).

35. The method of claim 34, wherein: The wireless communication node configures at least one configured permitted physical uplink shared channel (PUSCH) resource as the first channel through RRC signaling, wherein the configured permitted physical uplink shared channel (PUSCH) resource is any one of the second type of configured permitted physical uplink shared channel (PUSCH) resources or the first type of configured permitted physical uplink shared channel (PUSCH) resources.

36. The method of claim 34, wherein: The wireless communication node indicates available configured permitted physical uplink shared channel (PUSCH) resources in downlink control information (DCI) triggering the feedback message, wherein the available configured permitted physical uplink shared channel (PUSCH) resources are used to send at least one set of channel state information.

37. A method according to claim 34, wherein the wireless communication node configures a type of channel state information (CSI) feedback, and the type of channel state information (CSI) feedback is fed back in the configured licensed physical uplink shared channel (PUSCH) through RRC signaling, wherein the type of channel state information (CSI) feedback is one of a first type of channel state information (CSI) feedback or a second type of channel state information (CSI) feedback.

38. An apparatus for wireless communication, comprising a processor configured to perform the method according to any one of claims 1 to 37.

39. A non-transitory computer readable medium having stored thereon codes which, when executed by a processor, cause the processor to perform the method according to any one of claims 1 to 37.

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