CN113497680B

CN113497680B - Hybrid automatic repeat request response feedback method, terminal and network node

Info

Publication number: CN113497680B
Application number: CN202010251730.4A
Authority: CN
Inventors: 曾超君; 潘学明; 鲁智
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2022-08-02
Anticipated expiration: 2040-04-01
Also published as: WO2021197317A1; CN113497680A

Abstract

The invention provides a hybrid automatic repeat request response feedback method, a terminal and a network node, and relates to the technical field of communication. The hybrid automatic repeat request response feedback method is applied to a terminal and comprises the following steps: determining a first semi-persistent scheduling physical downlink shared channel (SPS) PDSCH, wherein the first SPS PDSCH does not need to feed back hybrid automatic repeat request (HARQ) -ACK; and determining HARQ-ACK feedback behavior according to a preset rule and the first SPS PDSCH. By the scheme, the HARQ-ACK feedback efficiency can be improved; the problem that the efficiency of HARQ-ACK feedback by the UE is low in the existing scene that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission of some SPS PDSCH transmission opportunities is solved well.

Description

Hybrid automatic repeat request response feedback method, terminal and network node

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a hybrid automatic repeat request response feedback method, a terminal, and a network node.

Background

In the related art, for the case of SPS (Semi-Persistent Scheduling) PDSCH (Physical Downlink Shared Channel) transmission or transmission part skipped by the base station, the UE (terminal) always feeds back HARQ (Hybrid Automatic Repeat reQuest) -ACK (acknowledgement) normally, for example, transmits NACK (negative response) for the SPS PDSCH which is completely skipped. When the SPS-Config configured for the UE is more or the SPS period is smaller, the HARQ-ACK feedback overhead is larger and the feedback efficiency is lower.

That is, for the scenario where the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission of certain SPS PDSCH transmission opportunities, the efficiency of UE feedback HARQ-ACK is low and needs to be improved.

Disclosure of Invention

The embodiment of the invention provides a hybrid automatic repeat request response feedback method, a terminal and a network node, which aim to solve the problem that the HARQ-ACK feedback efficiency of UE is low in the conventional scene that a base station skips SPS PDSCH transmission or SPS PDSCH partial transmission of some SPS PDSCH transmission opportunities.

In order to solve the technical problem, the invention adopts the following scheme:

in a first aspect, an embodiment of the present invention provides a method for feedback of harq response, where the method is applied to a terminal, and the method includes:

determining a first semi-persistent scheduling physical downlink shared channel (SPS) PDSCH, wherein the first SPS PDSCH does not need to feed back hybrid automatic repeat request (HARQ) -ACK;

and determining HARQ-ACK feedback behavior according to a preset rule and the first SPS PDSCH.

In a second aspect, an embodiment of the present invention further provides a method for feedback of harq response, which is applied to a network node, and includes:

and judging the HARQ-ACK feedback behavior of the terminal according to a preset rule adopted by the terminal and the first SPS PDSCH.

In a third aspect, an embodiment of the present invention further provides a terminal, including:

a first determining module, configured to determine a first semi-persistent scheduling physical downlink shared channel (SPS PDSCH), where the first SPS PDSCH does not need to feed back a hybrid automatic repeat request acknowledgement (HARQ-ACK);

a second determining module, configured to determine a HARQ-ACK feedback behavior according to a preset rule and the first SPS PDSCH.

In a fourth aspect, an embodiment of the present invention further provides a network node, including:

a third determining module, configured to determine a first semi-persistent scheduling physical downlink shared channel (SPS PDSCH), where the first SPS PDSCH does not need to feedback hybrid automatic repeat request acknowledgement (HARQ-ACK);

and the first judging module is used for judging the HARQ-ACK feedback behavior of the terminal according to a preset rule adopted by the terminal and the first SPS PDSCH.

In a fifth aspect, an embodiment of the present invention further provides a terminal, including: a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the computer program when executed by the processor implements the steps of the hybrid automatic repeat request response feedback method at the terminal side.

In a sixth aspect, an embodiment of the present invention further provides a network node, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the hybrid automatic repeat request acknowledgement feedback method at the network node side.

In a seventh aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method implements the steps of the hybrid automatic repeat request response feedback method on the terminal side or the network card node side.

The invention has the beneficial effects that:

in the scheme, a first semi-persistent scheduling physical downlink shared channel (SPS PDSCH) is determined, wherein the first SPS PDSCH does not need to feed back hybrid automatic repeat request (HARQ) -ACK (acknowledgement); determining HARQ-ACK feedback behavior according to a preset rule and the first SPS PDSCH; the method can realize that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission scenes of certain SPS PDSCH transmission opportunities, introduce a HARQ-ACK feedback scheme for saving HARQ-ACK feedback bits, and improve the HARQ-ACK feedback efficiency; the problem that the UE feeds back HARQ-ACK efficiency is low for a scene that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission of some SPS PDSCH transmission opportunities is solved.

Drawings

Fig. 1 is a first flowchart illustrating a hybrid automatic repeat request response feedback method according to an embodiment of the present invention;

fig. 2 is a schematic flow chart of a hybrid automatic repeat request-acknowledgement feedback method according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating SPS PDSCH HARQ-ACK feedback according to an embodiment of the invention;

fig. 4 is a schematic diagram of a terminal structure according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a terminal structure according to an embodiment of the present invention;

FIG. 6 is a first schematic diagram of a network node structure according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a network node structure according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The invention aims at the problem that the efficiency of HARQ-ACK feedback by UE is low in the existing scene that a base station skips SPS PDSCH transmission or SPS PDSCH partial transmission of certain SPS PDSCH transmission opportunities, and provides a hybrid automatic repeat request response feedback method, which firstly explains related contents related to the embodiment of the invention:

1. unauthorized communication system

In a communication system, an Unlicensed Band (Unlicensed Band) can be used as a supplement to a Licensed Band (Licensed Band) to help an operator expand the capacity of a service. Since the unlicensed band is shared by multiple technologies (Radio Access technologies, RATs, Radio Access technologies), such as Wi-Fi (wireless fidelity), radar, LTE-based Licensed-Assisted Access to unlicensed spectrum (LTE-LAA), etc., in some countries or regions, the unlicensed band must be used according to regulatory rules to ensure that all devices can fairly share the resources, such as Listen Before Talk (LBT), Maximum Channel Occupancy (MCOT), etc. When a transmission node needs to send information, it is required to perform LBT on a specified wireless channel first, and perform Energy Detection (ED) on the surrounding wireless transmission environment, and when the Energy is lower than a certain threshold, the channel is judged to be idle, and then transmission can be started. Otherwise, the channel is judged to be busy, and the transmission node can not transmit. The transmission node may be a base station, a UE, a Wi-Fi AP (Access Point), etc. After the transmission node starts transmission, the occupied channel time cannot exceed the MCOT.

NR (New Radio, New air interface) HARQ-ACK Codebook scheme

When the UE organizes the HARQ-ACK bit sequence that needs to be reported at a certain feedback time, based on a predefined rule and the scheduling condition of uplink and downlink PDSCH transmission of a single or multiple carriers that need to report HARQ-ACK at the feedback time, the corresponding relationship between each downlink PDSCH transmission and a certain bit in the organized HARQ-ACK bit sequence is determined, and this operation is called constructing an HARQ-ACK Codebook or HARQ-ACK Codebook scheme. The related art adopts two HARQ-ACK Codebook schemes: semi-static codebook (Type-1) and dynamic codebook (Type-2):

(1) the semi-static codebook organizes the HARQ-ACK codebook from the angle of receiving the candidate PDSCH, the size of the codebook is relevant to high-level configuration, and the method is stable: configuring table (i.e. high layer configured K) based on HARQ-ACK feedback Timing ₁ Set) and HARQ-ACK feedback time, each possible PDSCH time domain allocation for each possible scheduling time (based on some K in HARQ-ACK feedback Timing configuration table ₁ Taking values, wherein the HARQ-ACK feedback time corresponding to the PDSCH time domain allocation is exactly the time for reporting the HARQ-ACK bit sequence; various possible PDSCH time domain resource allocations are given by a PDSCH time domain resource allocation table specified by a protocol or configured by a high layer), corresponding feedback bits are reserved, if the UE does not actually detect the corresponding network scheduling indication for a certain possible PDSCH time domain allocation, the corresponding feedback bits are set as NACK (negative response), otherwise, the corresponding feedback bits are set according to the decoding result of PDSCH transmission corresponding to the PDSCH time domain allocation;

(2) the dynamic codebook organizes the HARQ-ACK codebook from the angle received by the PDCCH, the size of the codebook is related to the actual scheduling condition of the base station, and the dynamic codebook is more dynamic: by counting the number of Downlink Assignment Indexes (DAIs) of PDSCH transmission and/or SPS PDSCH release instructions which are actually scheduled, a feedback bit is reserved for each DAI value which is actually used, if the UE presumes that the PDSCH Assignment instructions or the SPS PDSCH release instructions corresponding to some DAIs are not received through other detected DAIs, the corresponding feedback bit is set to be NACK, otherwise, the corresponding feedback bit is set according to the decoding result of the PDSCH transmission corresponding to each PDSCH Assignment instruction, and the corresponding feedback bit is set to be ACK for the detected SPS PDSCH release instructions.

HARQ-ACK dynamic codebook enhancement for NR-U (NR-based Access to Unlicensed Spectrum, i.e., new air interface Unlicensed band) based on NR Access to Unlicensed Spectrum

Possible enhancements for HARQ-ACK feedback are widely discussed, including enhancements to the dynamic codebook.

The enhancements introduced for the dynamic codebook mainly include:

(1) performing explicit grouping on the dynamically scheduled PDSCH, and indicating a grouping corresponding to the scheduled PDSCH in scheduling DCI (Downlink Control Information); HARQ-ACK feedback corresponding to the same PDSCH packet is carried on the same PUCCH (Physical Uplink Control CHannel).

(2) C-DAI (Count Downlink Assignment Index) and/or T-DAI (Total Downlink Assignment Index) counting is performed within a single PDSCH packet.

(3) Each PDSCH packet maintains an NFI (New Feedback Indicator), and indicates whether to transmit New Feedback only or to retransmit Feedback before in a flipping manner (NFI is represented by 1 bit, and is converted from 0 to 1, or is converted from 1 to 0, and both are considered to be flipped, and if the value is not changed, it is considered to be not flipped); if NFI is turned over, indicating that all feedbacks of DCI turned over for the PDSCH grouping before the DCI is discarded, and only transmitting the DCI and HARQ-ACK feedbacks of PDSCH scheduled for the PDSCH grouping after the DCI is turned over, if the NFI is not turned over, all HARQ-ACK feedbacks for the PDSCH grouping need to be transmitted since the last NFI turning over, namely, the HARQ-ACK feedbacks with the same NFI value are all effective; thus, the number of HARQ-ACK bits actually needed to be transmitted may vary for two feedback requests of the same PDSCH packet.

(4) A single DCI may request HARQ-ACK feedback of one to multiple PDSCH packets to be transmitted on the same PUCCH, typically, a single downlink scheduling DCI may request HARQ-ACK feedback of a PDSCH packet corresponding to a PDSCH scheduled by itself by default, and this DCI may additionally trigger HARQ-ACK feedback of other PDSCH packets to be transmitted on the PUCCH indicated by the DCI together.

(5) The maximum number of PDSCH packets supported is 2.

(6) The UE may indicate whether the enhanced dynamic codebook is supported through the capability information.

One-shot HARQ-ACK codebook for NR-U

In the NR-U, in order to ensure that the UE and the network both understand the HARQ-ACK Codebook bit number completely and consistently and feed back HARQ-ACK information of all configured HARQ processes, an One-shot HARQ-ACK Codebook feedback mechanism, which may also be referred to as a Type-3 Codebook, is introduced, and feeds back HARQ-ACK information for each possible codeword of all configured HARQ processes on all carriers currently configured for the UE. In order to ensure that the UE and the gNB (base station) have consistent understanding on the PDSCH transmission corresponding to the fed-back HARQ-ACK bit and avoid the problem of ambiguity of understanding caused by missing DCI, the UE may further include an NDI of each codeword in the One-shot code book (if a certain codeword of a certain HARQ process is not scheduled all the time, it may be assumed that the corresponding NDI is 0; the NDI is a New Data Indicator, i.e., a New Data indication), and whether the NDI can be configured by the network side is included. In addition, HARQ-ACK of CBG (Code Block Group) granularity may also be configured by the network to support CBG-based retransmissions.

When organizing One-shot codebook, the traversal order of each dimension is as follows: CBG index, TB (Transport Block) index, HARQ process ID (identification), Serving cell index; the index in front is traversed first. NDI is appended to HARQ-ACK information of the corresponding TB.

SPS PDSCH HARQ-ACK feedback mechanism for URLLC (Ultra-reliable and Low Latency Communications)

SPS PDSCH (Semi-persistent PDSCH: PDSCH transmissions initiated periodically after downlink SPS transmissions are activated, which are transmitted based on a predefined manner without corresponding DCI indications) is introduced in a wireless communication system. For downlink SPS transmission, a network side ensures that only one serving cell at most configures an SPS-Config configuration item in a certain serving cell group configured for the UE, and the corresponding SPS PDSCH transmission interval is 10 milliseconds at least. For an SPS PDSCH transmission ending in slot n, the UE feeds back a HARQ-ACK corresponding to the SPS PDSCH transmission in slot n + k, where k is determined by a PDSCH-to-HARQ-timing-indicator (PDSCH-to-HARQ-ACK timing indication) indication field in the DCI activating the SPS PDSCH transmission.

For the feedback of HARQ-ACK (it is assumed below that based on the aforementioned k, HARQ-ACK corresponding to SPS PDSCH needs to be fed back in HARQ-ACK Codebook), when Type-1Codebook is adopted, two cases are distinguished:

(1) case 1: when the UE only needs to receive feedback HARQ-ACKs for the (single) SPS PDSCH, the UE only feeds back Codebook containing the corresponding 1-bit HARQ-ACK.

(2) Case 2: in cases other than 1, the UE organizes Codebook from the perspective of regular reception of a candidate PDSCH for which the HARQ-ACK bit is set when the candidate PDSCH reception corresponds to (single) SPS PDSCH reception.

When a Type-2 Codebook is employed,

(3) case 3: after generating the corresponding HARQ-ACK bit sequence for the dynamically scheduled PDSCH and the SPS PDSCH release based on the DAI, adding one bit at the tail to feed back the HARQ-ACK of the SPS PDSCH.

In URLLC, in order to shorten the transmission delay of the traffic data as much as possible, the network side may configure multiple sets of SPS-Config configuration items that are valid at the same time for a single UE (up to 8 sets of BWPs (BandWidth parts) of a single serving cell may be configured at the same time), and the corresponding SPS PDSCH transmission interval may be shortened to a minimum of a single timeslot.

Accordingly, for case 1 and case 3 above, 1-bit extension may be a plurality of bits (which may be referred to as case 4 and case 5, respectively, case 4 being an extension of case 1, case 5 being an extension of case 3), which correspond to HARQ-ACKs of different SPS-configs on different serving cells, and the traversal order of each dimension when organizing the HARQ-ACK bit sequence is: the downlink Slot (Slot) is first traversed in an ascending order according to a certain { SPS configuration index, serving cell index } combination, then the SPS configuration index is traversed in an ascending order according to a certain { serving cell index }, and finally the serving cell index is traversed in an ascending order.

For case 2 above, there may be more than 1 candidate PDSCH reception corresponding to SPS PDSCH in the organized Codebook, and the Codebook Size and HARQ-ACK bit organization order are not affected.

After introducing the NR-U enhanced dynamic codebook and One-shot codebook,

(4) case 6: for the enhanced dynamic codebook, the HARQ-ACK bit corresponding to the SPS PDSCH may be appended to the HARQ-ACK bit sequence corresponding to a certain PDSCH group for the dynamically scheduled PDSCH and the SPS PDSCH release, and the organization of the HARQ-ACK bit corresponding to the SPS PDSCH may refer to the above traversal order in the case of the extension bits for case 1 and case 3.

(5) Case 7: for One-shot code book, the HARQ-ACK bit corresponding to the SPS PDSCH is directly determined by the HARQ process corresponding to the SPS PDSCH.

An NR (New Radio) base station may skip SPS PDSCH transmission of a certain SPS (Semi-Persistent Scheduling) PDSCH (Physical Downlink Shared Channel) transmission opportunity or some SPS PDSCH transmission opportunities under various conditions, including at least:

(1) when the SPS PDSCH transmission opportunity is close to or comes, the base station has no downlink data to be transmitted;

(2) the base station works in an unlicensed frequency band, in a certain SPS PDSCH transmission opportunity, downlink data needs to be sent, but LBT (Listen Before Talk) fails Before the SPS PDSCH transmission, or the LBT failure leads to incomplete SPS PDSCH transmission Before partial SPS PDSCH transmission of the SPS PDSCH transmission opportunity (corresponding to repeated transmission for multiple times);

(3) the base station intentionally ignores a certain SPS PDSCH transmission opportunity in order to avoid occupying a certain HARQ (Hybrid Automatic Repeat reQuest) process (for example, there is data to be decoded or to be retransmitted corresponding to the HARQ process).

In this description, the following are referred to:

SPS PDSCH release (i.e., SPS PDSCH release) refers to a deactivated DCI that is issued by the network side and used to release activated SPS PDSCH transmission;

incomplete SPS PDSCH transmission: the SPS PDSCH here refers to PDSCH transmission based on configuration resource allocation within a certain SPS PDSCH transmission opportunity determined based on a period and an offset in a certain downlink SPS configuration after a certain downlink SPS configuration is activated, and time-frequency resources corresponding to PDSCH transmission are indicated by the latest activated DCI, that is, the configuration resource allocation is indicated by the latest activated DCI. When the duplicate transmission is configured, all duplicate transmission opportunities corresponding to the SPS PDSCH transmission opportunity correspond to the SPS PDSCH. For a single or single SPS PDSCH, it corresponds to a certain SPS PDSCH transmission opportunity and to a single HARQ-ACK feedback. Typically, a single SPS PDSCH corresponds to a single HARQ-ACK bit, i.e., a single HARQ-ACK feedback corresponds to 1 bit. Incomplete transmission means that each repeated transmission opportunity in a certain SPS PDSCH transmission opportunity is not fully utilized, and the requirement of incomplete transmission on a preset threshold is met.

Optionally, the incomplete transmission in the embodiment of the present invention may also be incomplete PDSCH transmission in dynamic scheduling, which is not limited herein.

An embodiment of the present invention provides a method for feeding back a harq response, which is applied to a terminal, and as shown in fig. 1, the method includes:

step 101: determining a first semi-persistent scheduling physical downlink shared channel (SPS) PDSCH, wherein the first SPS PDSCH does not need to feed back hybrid automatic repeat request (HARQ) -ACK;

step 102: and determining HARQ-ACK feedback behavior according to a preset rule and the first SPS PDSCH.

The determined first SPS PDSCH may be a set of SPS PDSCHs, where the set may include 0 SPS PDSCHs or at least one SPS PDSCH that does not require feedback of a corresponding HARQ-ACK, which is not limited herein.

In an embodiment of the present invention, the preset rule includes at least one of the following rules:

rule 1: under the condition that no other HARQ-ACK needs to be fed back except the HARQ-ACK corresponding to the first SPS PDSCH, the HARQ-ACK codebook is not fed back; otherwise, feeding back a first HARQ-ACK codebook, wherein the first HARQ-ACK codebook is a complete codebook;

rule 2: under the condition that no other HARQ-ACK needs to be fed back except the HARQ-ACK corresponding to the first SPS PDSCH, feeding back no HARQ-ACK codebook; otherwise, feeding back the first HARQ-ACK codebook under the condition of meeting a first condition; feeding back a second HARQ-ACK codebook under a second condition, wherein the second HARQ-ACK codebook is an incomplete codebook;

rule 3: under the condition that no other HARQ-ACK needs to be fed back except the HARQ-ACK corresponding to the first SPS PDSCH, feeding back no HARQ-ACK codebook; otherwise, feeding back the second HARQ-ACK codebook;

wherein the other HARQ-ACKs include: the other SPS PDSCH, the dynamically scheduled PDSCH, and/or the SPS PDSCH releases the corresponding HARQ-ACK.

Wherein, the feedback required without other HARQ-ACKs may specifically be: no other SPS PDSCH, dynamically scheduled PDSCH, SPS PDSCH release, and/or other HARQ-ACK feedback corresponding to the operation and/or behavior requiring HARQ-ACK feedback is required.

Specifically, rule 3 can be obtained by discarding or ignoring the option of generating the complete codebook (first HARQ-ACK codebook) in rule 2.

The SPS PDSCH here may be determined by a downlink SPS configuration configured for the terminal by the network side, and an active DCI detected by the terminal. Optionally, the determination may be further based on a detection or decision performed by the terminal on whether the SPS PDSCH is actually transmitted within the predefined SPS PDSCH transmission opportunity, or whether the SPS PDSCH is actually transmitted in its entirety.

Herein, the dynamically scheduled PDSCH, and the SPS PDSCH release may be determined based on the detection of the downlink DCI by the terminal. Optionally, other operations and/or behaviors requiring feedback of HARQ-ACK may also be determined by the terminal by detecting and/or receiving behaviors.

In this embodiment of the present invention, the condition that no other HARQ-ACK needs feedback includes: no other HARQ-ACK needs to be fed back within a first physical uplink control channel, PUCCH, transmission occasion, wherein the first PUCCH transmission occasion includes: and feeding back a corresponding PUCCH transmission opportunity by the HARQ-ACK of the first SPS PDSCH.

Regarding the PUCCH transmission timing corresponding to the HARQ-ACK feedback of the first SPS PDSCH, the following may be specifically mentioned: a corresponding PUCCH transmission opportunity when HARQ-ACK feedback of the first SPS PDSCH needs to be performed;

the first PUCCH transmission occasion is indicated or predefined, and may be dynamically indicated in DCI, or may be preconfigured using a higher layer signaling; and is not limited thereto.

In the embodiment of the invention, under the condition of feeding back the first HARQ-ACK codebook, the HARQ-ACK bit corresponding to the first SPS PDSCH is set as a negative response NACK.

In this embodiment of the present invention, the feeding back the second HARQ-ACK codebook under the second condition includes: determining a bit sequence and the position of HARQ-ACK bits of each SPS PDSCH in the bit sequence according to the HARQ-ACK feedback required by all SPS PDSCHs; removing HARQ-ACK bits corresponding to the first SPS PDSCH from the determined bit sequence, and sequentially cascading the rest bits to generate a second HARQ-ACK codebook, wherein the rest bits are set as HARQ-ACK of the SPS PDSCH corresponding to each rest bit; wherein the second condition comprises at least the following condition: the HARQ-ACK codebook is a semi-static codebook and includes only HARQ-ACKs for at least one SPS PDSCH.

In particular, "the HARQ-ACK codebook is a semi-static codebook, and only includes HARQ-ACKs for at least one SPS PDSCH" may include: case 1: the HARQ-ACK codebook is a semi-static codebook and contains only HARQ-ACKs for a single SPS PDSCH; and/or, case 4: the HARQ-ACK codebook is a semi-static codebook and includes only HARQ-ACKs for one to multiple SPS PDSCHs.

In this embodiment of the present invention, the feeding back the first HARQ-ACK codebook when the first condition is satisfied, or feeding back the second HARQ-ACK codebook when the second condition is satisfied includes: according to the first SPS PDSCH on each configuration carrier, other SPS PDSCHs needing HARQ-ACK feedback, and the receiving and/or detecting conditions of the PDSCH and the SPS PDSCH release in dynamic scheduling, executing a first preset operation aiming at the constructed complete HARQ-ACK codebook to obtain the first HARQ-ACK codebook or the second HARQ-ACK codebook; wherein the first condition and/or the second condition comprises at least the following conditions: the HARQ-ACK codebook is a semi-static codebook and one to more candidate PDSCHs receive corresponding SPS PDSCHs (corresponding to case 2 below).

Regarding "the first SPS PDSCH on each configured carrier, other SPS PDSCHs that need to feed back HARQ-ACK, and reception and/or detection conditions of dynamically scheduled PDSCH and SPS PDSCH release", specifically: the receiving and/or detecting condition of the first SPS PDSCH, the receiving and/or detecting condition of other SPS PDSCHs needing to feed back HARQ-ACK, the receiving and/or detecting condition of a dynamic scheduling PDSCH and the receiving and/or detecting condition of SPS PDSCH release.

Regarding the "constructed complete HARQ-ACK codebook", it may be constructed from the perspective of candidate PDSCH reception, but is not limited thereto.

In an embodiment of the present invention, the first preset operation includes at least one of the following operations: operation 1: on the basis of the constructed complete HARQ-ACK codebook, removing HARQ-ACK bits corresponding to the first SPS PDSCH on each configuration carrier, sequentially cascading the rest bits to generate a second HARQ-ACK codebook, and setting values of the rest bits according to a preset specification; operation 2: and on the basis of the constructed complete HARQ-ACK codebook, executing a second preset operation according to the first SPS PDSCH on each configured carrier and other SPS PDSCH, dynamically scheduling PDSCH and SPS PDSCH release conditions needing HARQ-ACK feedback, and generating the first HARQ-ACK codebook or the second HARQ-ACK codebook.

In an embodiment of the present invention, the second preset operation includes: performing at least one of the following for each configuration carrier; then sequentially cascading the residual bit sequences of each configuration carrier to generate the first HARQ-ACK codebook or the second HARQ-ACK codebook; the operations include: under the condition that the configuration carrier meets a preset condition, removing a bit sequence corresponding to the configuration carrier from the constructed complete HARQ-ACK codebook;

under the condition that the configuration carrier does not meet the preset condition, reserving a complete HARQ-ACK bit sequence corresponding to the configuration carrier, setting a bit corresponding to the first SPS (physical downlink shared channel) PDSCH on the configuration carrier as NACK (negative acknowledgement), and setting other bits according to the preset specification; or removing HARQ-ACK bits corresponding to the first SPS PDSCH on the configuration carrier from a complete HARQ-ACK bit sequence corresponding to the configuration carrier, wherein the rest bits are set to take values based on the preset specification;

the preset condition means that the configuration carrier does not have other SPS PDSCH, dynamic scheduling PDSCH and SPS PDSCH release which need to feed back HARQ-ACK except the first SPS PDSCH.

It is explained here that the second preset operation is an operation for a single configuration carrier; the "generating the first HARQ-ACK codebook or the second HARQ-ACK codebook by concatenation of the remaining bit sequences in order" may specifically be: and after the remaining bits are set to be valued based on a preset specification, sequentially generating the first HARQ-ACK codebook or the second HARQ-ACK codebook in a cascading manner.

"each configuration carrier" involved in the second preset operation: the configuration carriers feed back HARQ-ACK on the same uplink carrier; in the related protocol, all configured carriers configured for a single UE may be divided into more than one group, and each group of configured carriers feeds back HARQ-ACK on the same uplink carrier, and constructs HARQ-ACK Codebook according to needs.

Regarding "in case that the configured carrier satisfies a preset condition, removing a bit sequence corresponding to the configured carrier from the constructed complete HARQ-ACK codebook", that is: the HARQ-ACK bit sequence (or HARQ-ACK codebook) finally fed back does not include the HARQ-ACK bit corresponding to the configuration carrier "or" the length of the HARQ-ACK bit sequence corresponding to the configuration carrier is 0 ".

In the case that the preset condition is not satisfied: reference to a "complete HARQ-ACK bit sequence" may be, but is not limited to, a complete HARQ-ACK bit sequence generated from the perspective of candidate PDSCH reception.

In this embodiment of the present invention, the feeding back the second HARQ-ACK codebook under the second condition includes: determining a bit sequence and the position of HARQ-ACK bits of each SPS PDSCH in the bit sequence according to the HARQ-ACK feedback required by all SPS PDSCHs; removing HARQ-ACK bits corresponding to the first SPS PDSCH from the determined bit sequence, sequentially cascading the rest bits, and placing the rest bits behind a first target HARQ-ACK bit sequence to obtain a second HARQ-ACK codebook; the first target HARQ-ACK bit sequence is determined based on physical uplink control channel (PDCCH) detection or Downlink Assignment Index (DAI) counting, and the rest bits are set as HARQ-ACK of the SPS PDSCH corresponding to each bit sequence; wherein the second condition comprises at least the following condition: the HARQ-ACK codebook is a dynamic codebook and a codebook tail includes HARQ-ACK for at least one SPS PDSCH.

Regarding "the HARQ-ACK codebook is a dynamic codebook, and the end of the codebook contains HARQ-ACK for at least one SPS PDSCH", the method may specifically include: case 3: the HARQ-ACK codebook is a dynamic codebook, and the tail of the codebook comprises HARQ-ACK aiming at a single SPS PDSCH; and/or, case 5: the HARQ-ACK codebook is a dynamic codebook, and the tail of the codebook contains HARQ-ACK for one to multiple SPS PDSCHs.

In this embodiment of the present invention, the feeding back the second HARQ-ACK codebook under the second condition includes: determining a bit sequence and the position of HARQ-ACK bits of each SPS PDSCH in the bit sequence according to the HARQ-ACK feedback required by all SPS PDSCHs; removing HARQ-ACK bits corresponding to the first SPS PDSCH from the determined bit sequence, sequentially cascading the rest bits, and placing the rest bits at the tail of the HARQ-ACK bit sequence corresponding to the PDSCH group of a preset physical uplink shared channel group or at the tail of the whole codebook to obtain a second HARQ-ACK codebook; wherein the remaining bits are set to HARQ-ACK of the respective SPS PDSCH; wherein the second condition comprises at least the following condition: the HARQ-ACK codebook is an enhanced dynamic codebook, and includes HARQ-ACK for at least one SPS PDSCH at the tail of the HARQ-ACK bit sequence corresponding to the preset PDSCH group, or includes HARQ-ACK for at least one SPS PDSCH at the tail of the entire codebook (corresponding to the following case 6).

In this embodiment of the present invention, the feeding back the first HARQ-ACK codebook when the first condition is satisfied includes: employing the following operations to determine the first HARQ-ACK codebook: the operation comprises the following steps: determining the size of a codebook according to a preset specification without removing bits to obtain a first HARQ-ACK codebook; wherein, based on the condition of the first PDSCH, HARQ-ACK information of the first HARQ process is set; the first HARQ process corresponds to the first SPS PDSCH; wherein the first condition comprises at least the following conditions: the HARQ-ACK codebook is a disposable One-shot feedback codebook, and at least One HARQ process of at least One configured carrier corresponds to an SPS PDSCH (corresponding to case 7 below); the first PDSCH is a dynamically scheduled PDSCH or an SPS PDSCH that was last actually received or actually completely received by the first HARQ process before the first SPS PDSCH.

The "the first HARQ process corresponds to the first SPS PDSCH" specifically means: one-to-one correspondence, i.e., one first HARQ process for each SPS PDSCH in the set to which the first SPS PDSCH corresponds.

Optionally, the HARQ-ACK information herein may further include other related information, such as NDI, for example, refer to the above description of configuring and not configuring the report NDI, and is not described herein again.

Specifically, the dynamically scheduled PDSCH or SPS PDSCH actually received the last time or actually completely received is determined according to a PDSCH processing time capability of a physical uplink shared channel processing time supported by the terminal.

In this embodiment of the present invention, the feeding back the second HARQ-ACK codebook under the second condition includes: employing the following operations to determine a second HARQ-ACK codebook: the operations include: removing all HARQ-ACK information bits corresponding to a second HARQ process in a codebook determined according to a preset specification, and sequentially cascading the rest bits to generate a second HARQ-ACK codebook; wherein the second HARQ process is a HARQ process corresponding to the first SPS PDSCH; setting the rest bits according to a preset standard; wherein the second condition comprises at least the following condition: the HARQ-ACK codebook is a disposable One-shot feedback codebook, and at least One HARQ process of at least One configured carrier corresponds to the SPS PDSCH (corresponding to case 7 below).

In this embodiment of the present invention, the determining the first half of the SPS PDSCH includes: determining that the SPS PDSCH is a first SPS PDSCH upon detecting that there is actually no transmission of the SPS PDSCH.

In this embodiment of the present invention, the determining the first half of the SPS PDSCH includes: when repeated transmission for the SPS PDSCH is configured and incomplete SPS PDSCH transmission is detected, the SPS PDSCH is determined to be the first SPS PDSCH.

Specifically, the SPS PDSCH transmission is incomplete, and includes at least one of the following cases: the number of PDSCHs actually transmitted by the SPS PDSCH is less than the configured or predefined repeated transmission times, or the number of the PDSCH actually transmitted is less than the preset proportion of the configured or predefined repeated transmission times; and the PDSCH actually transmitted by the SPS PDSCH does not cover a preset redundancy version or does not cover all redundancy versions in a preset redundancy version set; wherein, the preset proportion is specified by a protocol or configured by a high layer; the preset redundancy version is specified by a protocol or configured by a high layer; the preset redundancy version set is specified by a protocol or configured by a high layer.

The number of repeated transmissions may be configured by a higher layer, but is not limited thereto.

For a description, the specific content of the second HARQ-ACK codebook fed back in rule 3 in the embodiment of the present invention refers to the related content of the second HARQ-ACK codebook fed back in rule 2, which is not described again here.

The preset specification can refer to an organization method of the semi-static codebook or refer to an organization method of a disposable One-shot feedback codebook; and will not be described in detail herein.

The hybrid automatic repeat request response feedback method provided by the embodiment of the invention determines a first semi-persistent scheduling physical downlink shared channel (SPS) PDSCH, wherein the first SPS PDSCH does not need to feed back hybrid automatic repeat request response (HARQ-ACK); determining HARQ-ACK feedback behavior according to a preset rule and the first SPS PDSCH; the method can realize that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission scenes of certain SPS PDSCH transmission opportunities, introduce a HARQ-ACK feedback scheme for saving HARQ-ACK feedback bits, and improve the HARQ-ACK feedback efficiency; the problem that the efficiency of HARQ-ACK feedback by the UE is low in the existing scene that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission of some SPS PDSCH transmission opportunities is solved well.

An embodiment of the present invention further provides a method for feeding back a harq response, which is applied to a network node, and as shown in fig. 2, the method includes:

step 201: determining a first semi-persistent scheduling physical downlink shared channel (SPS) PDSCH, wherein the first SPS PDSCH does not need to feed back hybrid automatic repeat request (HARQ) -ACK;

step 202: and judging the HARQ-ACK feedback behavior of the terminal according to a preset rule adopted by the terminal and the first SPS PDSCH.

The determined first SPS PDSCH may be a set of SPS PDSCHs, where the set may include 0 SPS PDSCHs or at least one SPS PDSCH that does not require feedback of a corresponding HARQ-ACK, which is not limited herein. The network node may be embodied as a base station.

rule 1: under the condition that no other HARQ-ACK needs to be fed back except the HARQ-ACK corresponding to the first SPS PDSCH, feeding back no HARQ-ACK codebook; otherwise, feeding back a first HARQ-ACK codebook, wherein the first HARQ-ACK codebook is a complete codebook;

the first PUCCH transmission occasion is indicated or predefined, and may be dynamically indicated in DCI, or may be preconfigured using a higher layer signaling; and is not limited herein.

the preset condition means that the configuration carrier does not have other SPS PDSCH, dynamically scheduled PDSCH and SPS PDSCH release which need to feed back HARQ-ACK except the first SPS PDSCH.

The "per configuration carrier" involved in the second preset operation: the configuration carriers feed back HARQ-ACK on the same uplink carrier; in the related protocol, all configured carriers configured for a single UE may be divided into more than one group, and each group of configured carriers feeds back HARQ-ACK on the same uplink carrier, and constructs HARQ-ACK Codebook according to needs.

In the case that the preset condition is not satisfied: the "complete HARQ-ACK bit sequence" referred to may be a complete HARQ-ACK bit sequence generated from the perspective of candidate PDSCH reception, but is not limited thereto.

In this embodiment of the present invention, the feeding back the second HARQ-ACK codebook under the condition that the second condition is satisfied includes: determining a bit sequence and the position of HARQ-ACK bits of each SPS PDSCH in the bit sequence according to the HARQ-ACK feedback required by all SPS PDSCHs; removing HARQ-ACK bits corresponding to the first SPS PDSCH from the determined bit sequence, sequentially cascading the rest bits, and placing the bits behind a first target HARQ-ACK bit sequence to obtain a second HARQ-ACK codebook; the first target HARQ-ACK bit sequence is determined based on physical uplink control channel (PDCCH) detection or Downlink Assignment Index (DAI) counting, and the rest bits are set as HARQ-ACK of the SPS PDSCH corresponding to each bit sequence; wherein the second condition comprises at least the following condition: the HARQ-ACK codebook is a dynamic codebook and a codebook tail includes HARQ-ACK for at least one SPS PDSCH.

In this embodiment of the present invention, the feeding back the first HARQ-ACK codebook when the first condition is satisfied includes: employing the following operations to determine the first HARQ-ACK codebook: the operations include: determining the size of a codebook according to a preset specification without removing bits to obtain a first HARQ-ACK codebook; wherein, based on the condition of the first PDSCH, HARQ-ACK information of the first HARQ process is set; the first HARQ process corresponds to the first SPS PDSCH; wherein the first condition comprises at least the following conditions: the HARQ-ACK codebook is a disposable One-shot feedback codebook, and at least One HARQ process of at least One configured carrier corresponds to the SPS PDSCH (corresponding to case 7 below); the first PDSCH is a dynamically scheduled PDSCH or an SPS PDSCH that was last actually received or actually completely received by the first HARQ process before the first SPS PDSCH.

For the description, the specific content of the second HARQ-ACK codebook fed back in rule 3 in the embodiment of the present invention refers to the related content of the second HARQ-ACK codebook fed back in rule 2, which is not described herein again.

The hybrid automatic repeat request response feedback method provided by the embodiment of the invention determines a first semi-persistent scheduling physical downlink shared channel (SPS) PDSCH, wherein the first SPS PDSCH does not need to feed back hybrid automatic repeat request response (HARQ-ACK); judging the HARQ-ACK feedback behavior of the terminal according to a preset rule adopted by the terminal and the first SPS PDSCH; the method can realize that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission scenes of certain SPS PDSCH transmission opportunities, introduce a HARQ-ACK feedback scheme for saving HARQ-ACK feedback bits, and improve the HARQ-ACK feedback efficiency; the problem that the efficiency of HARQ-ACK feedback by the UE is low in the existing scene that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission of some SPS PDSCH transmission opportunities is solved well.

The harq feedback method provided in the embodiment of the present invention is further described below, and regarding the rule, rule 1 and rule 2 are taken as examples.

For the above technical problem, considering that the UE has a high detection success rate for the base station to actually send the SPS PDSCH, the UE can meet the requirement of URLLC (Ultra-reliable and Low Latency Communications) reliability, and can consider introducing a HARQ-ACK feedback scheme that saves HARQ-ACK feedback bits, so as to improve HARQ-ACK feedback efficiency; therefore, the embodiment of the invention provides a hybrid automatic repeat request response feedback method; specifically, the method comprises the following steps:

firstly, when the UE detects that the downlink SPS PDSCH is not actually transmitted at a certain time, the UE judges that HARQ-ACK is not fed back aiming at the SPS PDSCH.

Optionally, when the UE configures the repeat transmission for the SPS PDSCH and detects that the SPS PDSCH transmission is incomplete for a certain time, the UE determines not to feed back the HARQ-ACK for the SPS PDSCH (note that for the SPS PDSCH configured with the repeat transmission, all SPS repeat transmissions corresponding to a single SPS PDSCH transmission opportunity are classified as single SPS PDSCH transmission, and only a single HARQ-ACK is considered to be fed back; the number of SPS PDSCH repeat transmissions corresponding to a single SPS PDSCH transmission opportunity is referred to in the following description). The SPS PDSCH (or dynamically scheduled PDSCH) transmission here is incomplete, including any one or more of the following:

1. this SPS PDSCH (or dynamically scheduled PDSCH) actually transmits a number of PDSCHs less than the configured or predefined number of repeated transmissions, or the number of actually transmitted PDSCHs is less than some proportion of the configured or predefined number of repeated transmissions. For example, when the network configures a high-layer parameter pdsch-aggregation factor for the UE, or configures a parameter number repetition in a certain row of a time domain resource allocation table corresponding to the time domain resource allocation information indicated by the activation DCI, and the activation DCI is non-Fallback DCI (DCI format 1_1 or DCI format 1_2), the configured or predefined number of repeated transmissions is pdsch-aggregation factor or number repetition. The above-mentioned ratio may be specified by a protocol or configured by a higher layer.

Wherein, the PDSCH-aggregation factor represents a PDSCH aggregation factor; specifically, the concept of aggregate transmission is introduced for the PUSCH and the PDSCH, that is, for a set of symbols allocated in a single time slot, the aggregate Factor (Aggregation Factor) is repeatedly generated in a plurality of consecutive time slots based on the configured Aggregation Factor (that is, the same set of symbols exists in all N consecutive time slots specified by the Aggregation Factor N, and is used for carrying the scheduled PUSCH or PDSCH). The PUSCH or PDSCH transmitted in a plurality of time slots aims at the same HARQ process, and the redundancy version corresponding to the PUSCH or PDSCH transmission in each time slot is set according to a predefined value sequence based on the DCI indicated value.

Numberrofepetions represents the number of repetitions; the method comprises the steps of indicating the number of times of the PDSCH transmission corresponding to the row in the time domain resource allocation table; the corresponding repeated transmissions may not have any time interval between each other (i.e., time domain consecutive) or may be on the same symbol set in adjacent time slots.

The Non-Fallback DCI represents Non-Fallback DCI and can support Information indication (IE field; IE, Information Element) corresponding to the high-level configurable characteristic.

2. This SPS PDSCH (or dynamically scheduled PDSCH) actually transmitted PDSCH does not cover some specific redundancy version, or certain specific redundancy versions, RVs, e.g., none of the actually transmitted PDSCH is directed to RV0, or none of the actually transmitted PDSCH is directed to RV0 or RV 3.

Secondly, when the UE judges that the HARQ-ACK is not fed back aiming at a certain or some SPS PDSCH, the UE executes the HARQ-ACK feedback by adopting any one of the following rules:

rule 1: the UE selects between the situations of not feeding back any Codebook and feeding back the complete Codebook according to the requirement, namely the UE does not allow the incomplete Codebook to be fed back; specifically, the method comprises the following steps:

the complete Codebook described herein may be understood as an HARQ-ACK Codebook that specifies a corresponding construction method in NR Rel-15 or 16, and may be a Type-1 HARQ-ACK Codebook (semi-static Codebook), a Type-2 HARQ-ACK Codebook (dynamic Codebook), an enhanced Type-2 HARQ-ACK Codebook (enhanced dynamic Codebook), or a Type-3 HARQ-ACK Codebook (One-shot feedback Codebook).

And only when the UE does not need to feed back the HARQ-ACK except for judging the HARQ-ACK corresponding to the SPS PDSCH which does not need to feed back the HARQ-ACK, the UE does not feed back any HARQ-ACK, otherwise, the UE normally feeds back the HARQ-ACK aiming at the SPS PDSCH or SPS PDSCHs, namely, a complete HARQ-ACK Codebook is transmitted, and HARQ-ACK bits corresponding to the SPS PDSCH or SPS PDSCHs in the complete Codebook are all set to be NACK.

Here, the UE has no other effective HARQ-ACK to feed back, and it can be understood that, for a specified PUCCH transmission occasion, there are no other SPS PDSCH, dynamically scheduled PDSCH, SPS PDSCH release, and other HARQ-ACK operations and/or behaviors requiring HARQ-ACK feedback that need to be fed back within the specified PUCCH transmission occasion, except for the one or those SPS PDSCH(s) for which the UE determines that the corresponding HARQ-ACK is not fed back.

Rule 2: the UE allows the incomplete Codebook to be fed back as required, namely, the incomplete Codebook is fed back or the complete Codebook is fed back without being fed back; specifically, the method comprises the following steps:

when the UE does not need to feed back any HARQ-ACK except for judging the HARQ-ACK corresponding to the SPS PDSCH which does not need to feed back the HARQ-ACK and no other effective HARQ-ACK needs to be fed back, the UE does not feed back any HARQ-ACK; when there are other valid HARQ-ACKs to be fed back by the UE, the UE rejects HARQ-ACK bits for this or these SPS PDSCH (which do not need to be fed back) in the Codebook for the final feedback, and may further prune the relevant bits as needed.

Specifically, the cases involving HARQ-ACK feedback for SPS PDSCH may include the following:

case 1: type-1Codebook and contains only HARQ-ACK (1 bit) for a single SPS PDSCH;

case 4: type-1Codebook, and including only HARQ-ACKs for one to multiple SPS PDSCHs;

case 2: type-1Codebook, and receiving the corresponding SPS PDSCH by one to a plurality of candidate PDSCHs;

case 3: type-2 Codebook, and the Codebook tail contains HARQ-ACK for a single SPS PDSCH;

case 5: type-2 Codebook, and the Codebook tail contains HARQ-ACKs for one to multiple SPS PDSCH;

case 6: an enhanced Type-2 Codebook (enhanced dynamic Codebook) including HARQ-ACKs for one to multiple SPS PDSCHs at the end of a HARQ-ACK bit sequence corresponding to a certain PDSCH group, or including HARQ-ACKs for one to multiple SPS PDSCHs at the end of the entire Codebook;

case 7: type-3 Codebook (One-shot feedback Codebook), HARQ-ACK of certain HARQ process(s) of certain configured carrier(s) corresponds to HARQ-ACK of SPS PDSCH (it can be understood that for this HARQ process(s), UE determines that the latest PDSCH was received as SPS PDSCH).

For the case 1 and the case 4, the UE determines the bit sequence and the positions of the HARQ-ACK bits of each SPS PDSCH in the bit sequence according to that all SPS PDSCHs need to feed back HARQ-ACK, then removes the HARQ-ACK bits corresponding to each SPS PDSCH for which it is determined that the feedback of the corresponding HARQ-ACK is not needed, sets the remaining bits as HARQ-ACK bits of the respective corresponding SPS PDSCHs, and then sequentially concatenates the HARQ-ACK bits into an updated HARQ-ACK bit sequence, which is used as the finally transmitted HARQ-ACK Codebook (i.e., the HARQ-ACK Codebook to be fed back). If the UE judges that the SPS PDSCH which does not need to feed back the corresponding HARQ-ACK does not exist, the Codebook fed back actually is completely consistent with that specified by the existing specification; and if the UE judges that all SPS PDSCHs do not need to feed back the corresponding HARQ-ACK, the UE does not actually feed back any HARQ-ACK.

For example, in fig. 3, if the UE does not consider performing the decision whether to not feed back HARQ-ACKs for a certain SPS PDSCH or for certain SPS PDSCHs, HARQ-ACKs for the set of SPS PDSCH transmissions { a, B, C, D, E, F } should be fed back. According to the above operation, the UE determines that SPS PDSCH transmissions B, E and F do not need to feed back HARQ-ACK, and finally only feeds back HARQ-ACK for SPS PDSCH transmission set { a, C, D }.

For case 2, the UE first constructs a complete HARQ-ACK Codebook from the perspective of receiving the candidate PDSCH according to the specification (i.e., the preset specification), and then performs one of the following operations according to the situations of receiving and/or detecting the dynamically scheduled PDSCH and SPS PDSCH release on each configured carrier without feeding back the corresponding HARQ-ACK (note that, with respect to case 1 or case 4, HARQ-ACK needs to be fed back for at least one dynamically scheduled PDSCH or SPS PDSCH release in addition to HARQ-ACK for the SPS PDSCH):

option (operation) 1: based on the complete Type-1Codebook, the UE removes HARQ-ACK bits corresponding to each SPS PDSCH which is judged not to need to feed back corresponding HARQ-ACK, and the rest bits are sequentially concatenated into an updated HARQ-ACK bit sequence after values are set based on a specification (namely the preset specification) and are used as the HARQ-ACK Codebook for final transmission.

And Option 2: the UE judges the SPS PDSCH which does not need to feed back HARQ-ACK on each configuration carrier and other SPS PDSCH, dynamic scheduling PDSCH and SPS PDSCH release situations which need to feed back HARQ-ACK on the basis of complete Type-1 Codebook:

(1) if there is no other SPS PDSCH, dynamic scheduling PDSCH and SPS PDSCH release which need to feed back HARQ-ACK except for the SPS PDSCH (the number can be 0 or an integer larger than 0) which does not need to feed back HARQ-ACK on a certain configuration carrier, the UE removes a bit sequence corresponding to the configuration carrier from the complete Type-1 Codebook; setting the value of the residual bits of each configuration carrier based on a preset specification, and then sequentially cascading the residual bits into an updated HARQ-ACK bit sequence to be used as the HARQ-ACK Codebook for final transmission;

(2) otherwise, some operation is performed as follows:

and Option 2-1: the UE reserves a complete bit sequence on the configuration carrier, sets a bit corresponding to the SPS PDSCH which does not need to feed back the HARQ-ACK as NACK, and sets other bits according to a preset specification; and then the UE concatenates the bit sequences corresponding to the residual configuration carriers without removing the corresponding bit sequences into an updated HARQ-ACK bit sequence as the HARQ-ACK Codebook for final transmission.

And Option 2-2: the UE removes HARQ-ACK bits corresponding to each SPS PDSCH which does not need to feed back corresponding HARQ-ACK according to judgment from a bit sequence corresponding to the configured carrier, and the rest bits are sequentially cascaded to form an updated HARQ-ACK bit sequence of the configured carrier (the sequence length is possibly 0) after values are set and taken based on a preset specification; and then the UE concatenates the bit sequences corresponding to the configuration carriers into an updated HARQ-ACK bit sequence as the HARQ-ACK Codebook for final transmission.

For cases 3 and 5, the processing of HARQ-ACK bits for SPS PDSCH for Type-2 Codebook tails may follow the corresponding processing of the foregoing cases 1 and 4, i.e., the HARQ-ACK bits corresponding to each SPS PDSCH that are judged not to require feedback of the corresponding HARQ-ACK are removed, and the remaining bits are sequentially concatenated and still appended after the HARQ-ACK bit sequence determined based on PDCCH detection or DAI counting.

For the case 6, the HARQ-ACK bit sequence appended to the end of the HARQ-ACK bit sequence corresponding to a PDSCH group, or appended to the end of the entire Codebook may also follow the corresponding processing of the foregoing cases 1 and 4, i.e., the HARQ-ACK bit sequence corresponding to each SPS PDSCH that is determined not to require feedback of the corresponding HARQ-ACK is removed, and the remaining bits are sequentially concatenated and still appended to the end of the HARQ-ACK bit sequence corresponding to a PDSCH group, or appended to the end of the entire Codebook.

For case 7, the UE may take some action as follows:

and Option A: the UE determines the Codebook Size not to remove any bit according to the specification (namely the preset specification); for a certain SPS PDSCH which does not need to feed back the corresponding HARQ-ACK, the UE assumes that the SPS PDSCH is not received when the HARQ-ACK information of the corresponding HARQ process is set, namely the HARQ-ACK information of the HARQ process is set based on the situation of dynamically scheduling PDSCH or SPS PDSCH which is actually received or actually completely received last time before the SPS PDSCH by the HARQ process (which can be understood as incomplete reception if the condition that the SPS PDSCH or dynamically scheduling PDSCH is incomplete transmission is met).

For example, assuming that for the HARQ Process _ i, the UE determines that the latest PDSCH is received as the SPS PDSCH and the SPS PDSCH does not need to feed back the corresponding HARQ-ACK, and for the dynamically scheduled PDSCH or the SPS PDSCH that the Process _ i actually receives or actually completely receives for the latest time before the SPS PDSCH is the PDSCH _ a, when the network configures the reporting NDI, the UE sets the HARQ-ACK bit corresponding to the Process _ i in the Codebook to the decoding result and the NDI corresponding to the PDSCH _ a; when the network configuration does not report the NDI, if the UE does not report the HARQ-ACK information corresponding to the PDSCH _ a, the HARQ-ACK bit corresponding to the Process _ i in the Codebook is set as the HARQ-ACK information corresponding to the PDSCH _ a, and if not, the HARQ-ACK bit is set as NACK.

And Option B: the UE determines, from the Codebook determined according to the specification (i.e., the preset specification), that all HARQ-ACK information bits corresponding to HARQ processes corresponding to SPS PDSCHs that do not require feedback of corresponding HARQ-ACKs are removed, and concatenates the remaining bit sequences into an updated HARQ-ACK bit sequence, which is used as the HARQ-ACK Codebook for final transmission.

Alternatively, in case 7, when determining the latest PDSCH of a certain HARQ process, the PDSCH processing time capability supported by the UE may be considered, that is, the PDSCH transmission that precedes and at least meets the PDSCH processing time requirement with respect to the HARQ-ACK transmission time is considered as the latest PDSCH.

From the above, the scheme provided by the embodiment of the invention is as follows: for the Case that the UE determines not to feed back HARQ-ACK for a certain or some SPS PDSCHs (it is determined that the SPS PDSCHs are not actually transmitted or the transmission is incomplete), the UE performs HARQ-ACK feedback by using any one of the following rules:

when the UE does not need to feed back any HARQ-ACK except for judging the HARQ-ACK corresponding to the SPS PDSCH which does not need to feed back the HARQ-ACK and no other effective HARQ-ACK needs to be fed back, the UE does not feed back any HARQ-ACK; when there are other valid HARQ-ACKs to be fed back by the UE, the UE rejects HARQ-ACK bits for the SPS PDSCH(s) in the Codebook for the final feedback, and may further prune the relevant bits as needed.

Meanwhile, a specific feedback scheme is given for 7 cases involving HARQ-ACK feedback for SPS PDSCH.

To sum up, the scheme provided by the embodiment of the invention is as follows: for the scene that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission of certain SPS PDSCH transmission opportunities, a HARQ-ACK feedback scheme for saving HARQ-ACK feedback bits is introduced, and HARQ-ACK feedback efficiency is improved.

For the operations of determining the first SPS PDSCH and executing the preset rule on the network node side, reference may be made to the related operations on the terminal side, and details are not repeated here.

As shown in fig. 4, an embodiment of the present invention provides a terminal 400, including:

a first determining module 401, configured to determine a first semi-persistent scheduling physical downlink shared channel (SPS PDSCH), where the first SPS PDSCH does not need to feedback hybrid automatic repeat request acknowledgement (HARQ-ACK);

a second determining module 402, configured to determine a HARQ-ACK feedback behavior according to a preset rule and the first SPS PDSCH.

In this embodiment of the present invention, the condition that no other HARQ-ACK needs feedback includes: no other HARQ-ACK needs to be fed back in a first Physical Uplink Control Channel (PUCCH) transmission occasion, wherein the first PUCCH transmission occasion comprises: and feeding back a corresponding PUCCH transmission opportunity by the HARQ-ACK of the first SPS PDSCH.

In this embodiment of the present invention, the feeding back the first HARQ-ACK codebook when the first condition is satisfied, or feeding back the second HARQ-ACK codebook when the second condition is satisfied includes: according to the first SPS PDSCH on each configuration carrier, other SPS PDSCHs needing HARQ-ACK feedback, and the receiving and/or detecting conditions of the PDSCH and the SPS PDSCH release in dynamic scheduling, executing a first preset operation aiming at the constructed complete HARQ-ACK codebook to obtain the first HARQ-ACK codebook or the second HARQ-ACK codebook; wherein the first condition and/or the second condition comprises at least the following conditions: the HARQ-ACK codebook is a semi-static codebook, and one to a plurality of candidate PDSCHs receive corresponding SPS PDSCHs.

In an embodiment of the present invention, the first preset operation includes at least one of the following operations: operation 1: on the basis of the constructed complete HARQ-ACK codebook, removing HARQ-ACK bits corresponding to the first SPS PDSCH on each configuration carrier, sequentially cascading the rest bits to generate a second HARQ-ACK codebook, and setting values of the rest bits according to a preset specification; operation 2: and on the basis of the constructed complete HARQ-ACK codebook, executing a second preset operation according to the first SPS PDSCH on each configuration carrier and other SPS PDSCH, dynamically scheduling PDSCH and SPS PDSCH release conditions needing to feed back HARQ-ACK, and generating the first HARQ-ACK codebook or the second HARQ-ACK codebook.

under the condition that the configuration carrier does not meet the preset condition, reserving a complete HARQ-ACK bit sequence corresponding to the configuration carrier, setting a bit corresponding to the first SPS (physical downlink shared channel) PDSCH on the configuration carrier as NACK (negative acknowledgement), and setting other bits according to the preset specification; or removing HARQ-ACK bits corresponding to the first SPS PDSCH on the configuration carrier from a complete HARQ-ACK bit sequence corresponding to the configuration carrier, wherein the rest bits are set to be values based on the preset specification;

In this embodiment of the present invention, the feeding back the second HARQ-ACK codebook under the second condition includes: determining a bit sequence and the position of HARQ-ACK bits of each SPS PDSCH in the bit sequence according to the HARQ-ACK feedback required by all SPS PDSCHs; removing HARQ-ACK bits corresponding to the first SPS PDSCH from the determined bit sequence, sequentially cascading the rest bits, and placing the bits behind a first target HARQ-ACK bit sequence to obtain a second HARQ-ACK codebook; the first target HARQ-ACK bit sequence is determined based on physical uplink control channel (PDCCH) detection or Downlink Assignment Index (DAI) counting, and the rest bits are set as HARQ-ACK of the SPS PDSCH corresponding to each bit sequence; wherein the second condition comprises at least the following condition: the HARQ-ACK codebook is a dynamic codebook and a codebook tail includes HARQ-ACK for at least one SPS PDSCH.

In this embodiment of the present invention, the feeding back the second HARQ-ACK codebook under the second condition includes: determining a bit sequence and the position of HARQ-ACK bits of each SPSPDSCH in the bit sequence according to the HARQ-ACK feedback required by all SPS PDSCHs; removing HARQ-ACK bits corresponding to the first SPS PDSCH from the determined bit sequence, sequentially cascading the rest bits, and placing the rest bits at the tail of the HARQ-ACK bit sequence corresponding to the PDSCH group of a preset physical uplink shared channel group or at the tail of the whole codebook to obtain a second HARQ-ACK codebook; wherein the remaining bits are set to HARQ-ACK of the respective SPS PDSCH; wherein the second condition comprises at least the following condition: the HARQ-ACK codebook is an enhanced dynamic codebook, and the tail of the HARQ-ACK bit sequence corresponding to the preset PDSCH group contains HARQ-ACK aiming at least one SPS PDSCH, or the tail of the whole codebook contains HARQ-ACK aiming at least one SPS PDSCH.

In this embodiment of the present invention, the feeding back the first HARQ-ACK codebook when the first condition is satisfied includes: employing the following operations to determine the first HARQ-ACK codebook: the operations include: determining the size of a codebook according to a preset specification without removing bits to obtain a first HARQ-ACK codebook; wherein, based on the condition of the first PDSCH, HARQ-ACK information of the first HARQ process is set; the first HARQ process corresponds to the first SPS PDSCH; wherein the first condition comprises at least the following conditions: the HARQ-ACK codebook is a disposable One-shot feedback codebook, and at least One HARQ process of at least One configuration carrier corresponds to the SPS PDSCH; the first PDSCH is a dynamically scheduled PDSCH or an SPS PDSCH that was actually received last time or actually completely received by the first HARQ process before the first SPS PDSCH.

Specifically, the dynamically scheduled PDSCH or SPS PDSCH that has been actually received last time or actually received completely is determined according to the PDSCH processing time capability of the physical uplink shared channel processing time supported by the terminal.

In this embodiment of the present invention, the feeding back the second HARQ-ACK codebook under the second condition includes: employing the following operations to determine a second HARQ-ACK codebook: the operations include: removing all HARQ-ACK information bits corresponding to a second HARQ process in a codebook determined according to a preset specification, and sequentially cascading the rest bits to generate a second HARQ-ACK codebook; wherein the second HARQ process is a HARQ process corresponding to the first SPS PDSCH; setting the rest bits according to a preset standard; wherein the second condition comprises at least the following condition: the HARQ-ACK codebook is a disposable One-shot feedback codebook, and at least One HARQ process of at least One configuration carrier corresponds to the SPS PDSCH.

In an embodiment of the present invention, the first determining module includes: a first determining submodule, configured to determine that the SPS PDSCH is the first SPS PDSCH, when it is detected that the SPS PDSCH is not actually transmitted.

In an embodiment of the present invention, the first determining module includes: a second determining submodule, configured to determine the SPS PDSCH to be the first SPS PDSCH if the repeated transmission for the SPS PDSCH is configured and the SPS PDSCH transmission is detected to be incomplete.

Specifically, the SPS PDSCH transmission is incomplete, and includes at least one of the following cases: the number of PDSCHs actually transmitted by the SPS PDSCH is less than the number of configured or predefined repeated transmission times, or the number of PDSCHs actually transmitted is less than the preset proportion of the number of configured or predefined repeated transmission times; and the PDSCH actually transmitted by the SPS PDSCH does not cover a preset redundancy version or does not cover all redundancy versions in a preset redundancy version set; wherein, the preset proportion is specified by a protocol or configured by a high layer; the preset redundancy version is specified by a protocol or configured by a high layer; the preset redundancy version set is specified by a protocol or configured by a high layer.

The terminal provided by the embodiment of the invention determines a first half of a continuously scheduled physical downlink shared channel (SPS) PDSCH, wherein the first SPS PDSCH does not need to feed back hybrid automatic repeat request (HARQ) -ACK; determining HARQ-ACK feedback behavior according to a preset rule and the first SPS PDSCH; the method can realize that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission scenes of certain SPS PDSCH transmission opportunities, introduce a HARQ-ACK feedback scheme for saving HARQ-ACK feedback bits, and improve the HARQ-ACK feedback efficiency; the problem that the efficiency of HARQ-ACK feedback by the UE is low in the existing scene that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission of some SPS PDSCH transmission opportunities is solved well.

It should be noted that the terminal embodiment is a terminal corresponding to the above hybrid automatic repeat request response feedback method applied to the terminal, and all implementation manners of the above embodiments are applicable to the terminal embodiment, and the same technical effects as those of the terminal embodiment can also be achieved.

Fig. 5 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present invention.

The terminal 50 includes but is not limited to: radio unit 510, network module 520, audio output unit 530, input unit 540, sensor 550, display unit 560, user input unit 570, interface unit 580, memory 590, processor 511, and power supply 512. Those skilled in the art will appreciate that the terminal configuration shown in fig. 5 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

Wherein, the processor 511 is configured to determine a first half SPS physical downlink shared channel SPS PDSCH, where the first SPS PDSCH does not need to feedback a HARQ-ACK; and determining HARQ-ACK feedback behavior according to a preset rule and the first SPS PDSCH.

The terminal determines a first half of a continuous scheduling physical downlink shared channel (SPS) PDSCH, wherein the first SPS PDSCH does not need to feed back hybrid automatic repeat request (HARQ) -ACK; determining HARQ-ACK feedback behavior according to a preset rule and the first SPS PDSCH; the method can realize that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission scenes of certain SPS PDSCH transmission opportunities, introduce a HARQ-ACK feedback scheme for saving HARQ-ACK feedback bits, and improve the HARQ-ACK feedback efficiency; the problem that the UE feedback HARQ-ACK efficiency is low in the existing scene that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission of some SPS PDSCH transmission opportunities is solved well.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 510 may be used for receiving and sending signals during a message transmission or call process, and specifically, receives downlink data from a network node and then processes the received downlink data to the processor 511; in addition, the upstream data is sent to the network node. In general, radio frequency unit 510 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio unit 510 may also communicate with a network and other devices through a wireless communication system.

The terminal provides the user with wireless broadband internet access through the network module 520, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 530 may convert audio data received by the radio frequency unit 510 or the network module 520 or stored in the memory 590 into an audio signal and output as sound. Also, the audio output unit 530 may also provide audio output related to a specific function performed by the terminal 50 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 530 includes a speaker, a buzzer, a receiver, and the like.

The input unit 540 is used for receiving an audio or video signal. The input Unit 540 may include a Graphics Processing Unit (GPU) 541 and a microphone 542, and the Graphics processor 541 processes image data of a still picture or video obtained by an image capturing device (e.g., a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 560. The image frames processed by the graphic processor 541 may be stored in the memory 590 (or other storage medium) or transmitted via the radio frequency unit 510 or the network module 520. The microphone 542 may receive sound, and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication network node via the radio frequency unit 510 in case of the phone call mode.

The terminal 50 also includes at least one sensor 550, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 561 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 561 and/or the backlight when the terminal 50 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensor 550 may further include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which will not be described herein.

The display unit 560 is used to display information input by a user or information provided to the user. The Display unit 560 may include a Display panel 561, which may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 570 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 570 includes a touch panel 571 and other input devices 572. The touch panel 571, also referred to as a touch screen, can collect touch operations by a user (e.g., operations by a user on the touch panel 571 or near the touch panel 571 using a finger, a stylus, or any suitable object or attachment). The touch panel 571 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 511, and receives and executes commands sent from the processor 511. In addition, the touch panel 571 can be implemented by various types, such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 570 may include other input devices 572 in addition to the touch panel 571. In particular, the other input devices 572 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described herein.

Further, the touch panel 571 can be overlaid on the display panel 561, and when the touch panel 571 detects a touch operation on or near the touch panel 571, the touch panel is transmitted to the processor 511 to determine the type of the touch event, and then the processor 511 provides a corresponding visual output on the display panel 561 according to the type of the touch event. Although the touch panel 571 and the display panel 561 are shown in fig. 5 as two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 571 and the display panel 561 may be integrated to implement the input and output functions of the terminal, and the implementation is not limited herein.

The interface unit 580 is an interface for connecting an external device to the terminal 50. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 580 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal 50 or may be used to transmit data between the terminal 50 and an external device.

The memory 590 may be used to store software programs as well as various data. The memory 590 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 590 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 511 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by running or executing software programs and/or modules stored in the memory 590 and calling data stored in the memory 590, thereby integrally monitoring the terminal. Processor 511 may include one or more processing units; preferably, the processor 511 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 511.

The terminal 50 may further include a power source 512 (e.g., a battery) for supplying power to various components, and preferably, the power source 512 may be logically connected to the processor 511 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

In addition, the terminal 50 includes some functional modules that are not shown, and will not be described in detail herein.

Preferably, an embodiment of the present invention further provides a terminal, including a processor 511, a memory 590, and a computer program stored in the memory 590 and operable on the processor 511, where the computer program is executed by the processor 511 to implement each process of the embodiment of the harq feedback method applied to the terminal side, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here.

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the embodiment of the hybrid automatic repeat request response feedback method applied to the terminal side, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

As shown in fig. 6, an embodiment of the present invention provides a network node 600, including:

a third determining module 601, configured to determine a first semi-persistent scheduling physical downlink shared channel (SPS PDSCH), where the first SPS PDSCH does not need to feedback a hybrid automatic repeat request acknowledgement (HARQ-ACK);

a first determining module 602, configured to determine, according to a preset rule adopted by a terminal and the first SPS PDSCH, a HARQ-ACK feedback behavior of the terminal.

under the condition that the configuration carrier does not meet the preset condition, reserving a complete HARQ-ACK bit sequence corresponding to the configuration carrier, setting a bit corresponding to the first SPS (physical downlink shared channel) PDSCH on the configuration carrier as NACK (negative acknowledgement), and setting other bits according to the preset specification; or removing HARQ-ACK bits corresponding to the first SPS PDSCH on the configuration carrier from a complete HARQ-ACK bit sequence corresponding to the configuration carrier, wherein the rest bits are set to take values based on the preset specification; the preset condition means that the configuration carrier does not have other SPS PDSCH, dynamically scheduled PDSCH and SPS PDSCH release which need to feed back HARQ-ACK except the first SPS PDSCH.

In this embodiment of the present invention, the feeding back the second HARQ-ACK codebook under the second condition includes: determining a bit sequence and the position of HARQ-ACK bits of each SPS PDSCH in the bit sequence according to the HARQ-ACK feedback required by all SPS PDSCHs; removing HARQ-ACK bits corresponding to the first SPS PDSCH from the determined bit sequence, sequentially cascading the rest bits, and placing the rest bits at the tail of the HARQ-ACK bit sequence corresponding to the PDSCH group of a preset physical uplink shared channel group or at the tail of the whole codebook to obtain a second HARQ-ACK codebook; wherein the remaining bits are set to HARQ-ACK of the respective SPS PDSCH; wherein the second condition comprises at least the following condition: the HARQ-ACK codebook is an enhanced dynamic codebook, and the tail of the HARQ-ACK bit sequence corresponding to the preset PDSCH group contains HARQ-ACK aiming at least one SPS PDSCH, or the tail of the whole codebook contains HARQ-ACK aiming at least one SPS PDSCH.

In this embodiment of the present invention, the feeding back the first HARQ-ACK codebook when the first condition is satisfied includes: employing the following operations to determine the first HARQ-ACK codebook: the operations include: determining the size of a codebook according to a preset specification without removing bits to obtain a first HARQ-ACK codebook; wherein, based on the condition of the first PDSCH, HARQ-ACK information of the first HARQ process is set; the first HARQ process corresponds to the first SPS PDSCH; wherein the first condition comprises at least the following conditions: the HARQ-ACK codebook is a disposable One-shot feedback codebook, and at least One HARQ process of at least One configuration carrier corresponds to the SPS PDSCH; the first PDSCH is a dynamically scheduled PDSCH or an SPS PDSCH that was last actually received or actually completely received by the first HARQ process before the first SPS PDSCH.

In an embodiment of the present invention, the third determining module includes: a third determining submodule, configured to determine that the SPS PDSCH is the first SPS PDSCH, when it is detected that the SPS PDSCH is not actually transmitted.

In an embodiment of the present invention, the third determining module includes: and a fourth determining submodule, configured to determine the SPS PDSCH to be the first SPS PDSCH if the repeated transmission for the SPS PDSCH is configured and the SPS PDSCH transmission is detected to be incomplete.

The network node provided by the embodiment of the invention determines a first semi-persistent scheduling physical downlink shared channel (SPS PDSCH), wherein the first SPS PDSCH does not need to feed back hybrid automatic repeat request (HARQ) -ACK; judging the HARQ-ACK feedback behavior of the terminal according to a preset rule adopted by the terminal and the first SPS PDSCH; the method can realize that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission scenes of certain SPS PDSCH transmission opportunities, introduce a HARQ-ACK feedback scheme for saving HARQ-ACK feedback bits, and improve the HARQ-ACK feedback efficiency; the problem that the efficiency of HARQ-ACK feedback by the UE is low in the existing scene that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission of some SPS PDSCH transmission opportunities is solved well.

It should be noted that, the network node embodiment is a network node corresponding to the hybrid automatic repeat request response feedback method applied to the network node, and all implementation manners of the foregoing embodiments are applicable to the network node embodiment, and can achieve the same technical effect as that of the foregoing embodiment.

Fig. 7 is a structural diagram of a network node according to an embodiment of the present invention, which can implement the details of the beam reporting method described above and achieve the same effect. As shown in fig. 7, the network node 700 comprises: a processor 701, a transceiver 702, a memory 703 and a bus interface, wherein:

a processor 701, configured to determine a first semi-persistent scheduling physical downlink shared channel (SPS PDSCH), where the first SPS PDSCH does not need to feedback hybrid automatic repeat request acknowledgement (HARQ-ACK);

The network node provided by the embodiment of the invention determines a first half of continuously scheduled physical downlink shared channel (SPS PDSCH), wherein the first SPS PDSCH does not need to feed back hybrid automatic repeat request (HARQ) -ACK; judging the HARQ-ACK feedback behavior of the terminal according to a preset rule adopted by the terminal and the first SPS PDSCH; the method can realize that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission scenes of certain SPS PDSCH transmission opportunities, introduce a HARQ-ACK feedback scheme for saving HARQ-ACK feedback bits, and improve the HARQ-ACK feedback efficiency; the problem that the efficiency of HARQ-ACK feedback by the UE is low in the existing scene that the base station skips SPS PDSCH transmission or SPS PDSCH partial transmission of some SPS PDSCH transmission opportunities is solved well.

In fig. 7, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 701, and various circuits, represented by memory 703, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 702 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

Preferably, an embodiment of the present invention further provides a network node, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, implements each process of the embodiment of the harq feedback method applied to the network node side, and can achieve the same technical effect, and is not described herein again to avoid repetition.

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the embodiment of the harq feedback method applied to the network node side, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

The network Node may be a Base Transceiver Station (BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB, eNodeB) in LTE, a relay Station, an Access point, a Base Station in a future 5G network, or the like, which is not limited herein.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling an electronic device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A hybrid automatic repeat request response feedback method is applied to a terminal, and is characterized by comprising the following steps:

determining HARQ-ACK feedback behavior according to a preset rule and the first SPS PDSCH;

wherein the preset rules comprise at least one of the following rules:

under the condition that no other HARQ-ACK needs to be fed back except the HARQ-ACK corresponding to the first SPS PDSCH, feeding back no HARQ-ACK codebook; otherwise, feeding back a first HARQ-ACK codebook which is a complete codebook under the condition of meeting a first condition; feeding back a second HARQ-ACK codebook under a second condition, wherein the second HARQ-ACK codebook is an incomplete codebook;

under the condition that no other HARQ-ACK needs to be fed back except the HARQ-ACK corresponding to the first SPS PDSCH, feeding back no HARQ-ACK codebook; otherwise, feeding back the second HARQ-ACK codebook;

2. The HARQ-ACK feedback method according to claim 1, wherein the case where no other HARQ-ACK needs to be fed back comprises: no other HARQ-ACK needs to be fed back within a first physical uplink control channel, PUCCH, transmission occasion, wherein the first PUCCH transmission occasion includes: and feeding back a corresponding PUCCH transmission opportunity by the HARQ-ACK of the first SPS PDSCH.

3. The HARQ-ACK feedback method according to claim 1, wherein in case of feeding back a first HARQ-ACK codebook, the HARQ-ACK bit corresponding to the first SPS PDSCH is set to a negative response NACK.

4. The HARQ feedback method of claim 1, wherein the feeding back the second HARQ-ACK codebook under the second condition is satisfied comprises:

determining a bit sequence and the position of HARQ-ACK bits of each SPS PDSCH in the bit sequence according to the HARQ-ACK feedback required by all SPS PDSCHs;

removing HARQ-ACK bits corresponding to the first SPS PDSCH from the determined bit sequence, and sequentially cascading the rest bits to generate a second HARQ-ACK codebook, wherein the rest bits are set as HARQ-ACK of the SPS PDSCH corresponding to each rest bit;

wherein the second condition comprises at least the following condition:

the HARQ-ACK codebook is a semi-static codebook and includes only HARQ-ACKs for at least one SPS PDSCH.

5. The HARQ-ACK feedback method according to claim 1, wherein the feeding back the first HARQ-ACK codebook when a first condition is satisfied, or feeding back a second HARQ-ACK codebook when a second condition is satisfied, comprises:

according to the first SPS PDSCH on each configuration carrier, other SPS PDSCHs needing HARQ-ACK feedback, and the receiving and/or detecting conditions of the PDSCH and the SPS PDSCH release in dynamic scheduling, executing a first preset operation aiming at the constructed complete HARQ-ACK codebook to obtain the first HARQ-ACK codebook or the second HARQ-ACK codebook;

wherein the first condition and/or the second condition comprises at least the following conditions:

the HARQ-ACK codebook is a semi-static codebook, and one to a plurality of candidate PDSCHs receive corresponding SPS PDSCHs.

6. The HARQ-ACK feedback method according to claim 5, wherein the first predetermined operation comprises at least one of:

operation 1: on the basis of the constructed complete HARQ-ACK codebook, removing HARQ-ACK bits corresponding to the first SPS PDSCH on each configuration carrier, sequentially cascading the rest bits to generate a second HARQ-ACK codebook, and setting values of the rest bits according to a preset specification;

operation 2: and on the basis of the constructed complete HARQ-ACK codebook, executing a second preset operation according to the first SPS PDSCH on each configured carrier and other SPS PDSCH, dynamically scheduling PDSCH and SPS PDSCH release conditions needing HARQ-ACK feedback, and generating the first HARQ-ACK codebook or the second HARQ-ACK codebook.

7. The HARQ-ACK feedback method according to claim 6, wherein the second predetermined operation comprises:

performing at least one of the following for each configuration carrier; then sequentially cascading the residual bit sequences of each configuration carrier to generate the first HARQ-ACK codebook or the second HARQ-ACK codebook; the operations include:

under the condition that the configuration carrier meets a preset condition, removing a bit sequence corresponding to the configuration carrier from the constructed complete HARQ-ACK codebook;

8. The HARQ feedback method according to claim 1, wherein feeding back the second HARQ-ACK codebook under the second condition is further characterized by:

removing HARQ-ACK bits corresponding to the first SPS PDSCH from the determined bit sequence, sequentially cascading the rest bits, and placing the rest bits behind a first target HARQ-ACK bit sequence to obtain a second HARQ-ACK codebook; the first target HARQ-ACK bit sequence is determined based on physical uplink control channel (PDCCH) detection or Downlink Assignment Index (DAI) counting, and the rest bits are set as HARQ-ACK of the SPS PDSCH corresponding to each bit sequence;

wherein the second condition comprises at least the following condition:

the HARQ-ACK codebook is a dynamic codebook and a codebook tail includes HARQ-ACK for at least one SPS PDSCH.

9. The HARQ feedback method according to claim 1, wherein feeding back the second HARQ-ACK codebook under the second condition is further characterized by:

removing HARQ-ACK bits corresponding to the first SPS PDSCH from the determined bit sequence, sequentially cascading the rest bits, and placing at the tail of the HARQ-ACK bit sequence corresponding to the PDSCH group of a preset physical uplink shared channel group or at the tail of the whole codebook to obtain a second HARQ-ACK codebook; wherein the remaining bits are set to HARQ-ACK of the respective SPS PDSCH;

wherein the second condition comprises at least the following condition:

the HARQ-ACK codebook is an enhanced dynamic codebook, and the tail of the HARQ-ACK bit sequence corresponding to the preset PDSCH group contains HARQ-ACK aiming at least one SPS PDSCH, or the tail of the whole codebook contains HARQ-ACK aiming at least one SPS PDSCH.

10. The HARQ-ACK feedback method according to claim 1, wherein feeding back the first HARQ-ACK codebook if the first condition is satisfied comprises:

employing the following operations to determine the first HARQ-ACK codebook:

the operations include: determining the size of a codebook according to a preset specification without removing bits to obtain a first HARQ-ACK codebook; wherein, based on the condition of the first PDSCH, HARQ-ACK information of the first HARQ process is set; the first HARQ process corresponds to the first SPS PDSCH;

wherein the first condition comprises at least the following conditions:

the HARQ-ACK codebook is a disposable One-shot feedback codebook, and at least One HARQ process of at least One configuration carrier corresponds to the SPS PDSCH;

the first PDSCH is a dynamically scheduled PDSCH or an SPS PDSCH that was last actually received or actually completely received by the first HARQ process before the first SPS PDSCH.

11. The harq feedback method of claim 10, wherein the last actually received or actually completely received dynamically scheduled PDSCH or SPS PDSCH is determined according to a physical uplink shared channel processing time, PDSCH processing time, capability supported by the terminal.

12. The HARQ feedback method according to claim 1, wherein feeding back the second HARQ-ACK codebook under the second condition is further characterized by:

employing the following operations to determine a second HARQ-ACK codebook:

the operations include: removing all HARQ-ACK information bits corresponding to a second HARQ process in a codebook determined according to a preset specification, and sequentially cascading the rest bits to generate a second HARQ-ACK codebook; wherein the second HARQ process is a HARQ process corresponding to the first SPS PDSCH; setting the rest bits according to a preset standard;

wherein the second condition comprises at least the following condition:

the HARQ-ACK codebook is a disposable One-shot feedback codebook, and at least One HARQ process of at least One configuration carrier corresponds to the SPS PDSCH.

13. The harq feedback method according to claim 1, wherein the determining the first half SPS PDSCH comprises:

determining that the SPS PDSCH is a first SPS PDSCH upon detecting that there is actually no transmission of the SPS PDSCH.

14. The harq feedback method according to claim 1, wherein the determining the first half SPS PDSCH comprises:

when the repeated transmission for the SPS PDSCH is configured and the transmission of the SPS PDSCH is detected to be incomplete, the SPS PDSCH is determined to be the first SPS PDSCH.

15. The harq feedback method of claim 14, wherein the SPS PDSCH transmission is incomplete, including at least one of:

the number of PDSCHs actually transmitted by the SPS PDSCH is less than the configured or predefined repeated transmission times, or the number of the PDSCH actually transmitted is less than the preset proportion of the configured or predefined repeated transmission times; and the number of the first and second groups,

the PDSCH actually transmitted by the SPS PDSCH does not cover a preset redundancy version or does not cover all redundancy versions in a preset redundancy version set;

wherein, the preset proportion is specified by a protocol or configured by a high layer; the preset redundancy version is specified by a protocol or configured by a high layer; the preset redundancy version set is specified by a protocol or configured by a high layer.

16. A hybrid automatic repeat request response feedback method is applied to a network node and is characterized by comprising the following steps:

judging the HARQ-ACK feedback behavior of the terminal according to a preset rule adopted by the terminal and the first SPS PDSCH;

wherein the preset rules comprise at least one of the following rules:

17. The HARQ-ACK feedback method according to claim 16, wherein in case of feeding back the first HARQ-ACK codebook, the HARQ-ACK bit corresponding to the first SPS PDSCH is set to negative response NACK.

18. The HARQ feedback method according to claim 16, wherein feeding back the second HARQ-ACK codebook under the second condition comprises:

wherein the second condition comprises at least the following condition:

19. The HARQ-ACK feedback method according to claim 16, wherein the feeding back the first HARQ-ACK codebook when a first condition is satisfied, or the feeding back a second HARQ-ACK codebook when a second condition is satisfied, comprises:

20. The harq feedback method according to claim 19, wherein the first preset operation comprises at least one of:

21. The harq feedback method according to claim 20, wherein the second predetermined operation comprises:

22. The HARQ feedback method according to claim 16, wherein feeding back the second HARQ-ACK codebook under the second condition comprises:

wherein the second condition comprises at least the following condition:

23. The HARQ feedback method according to claim 16, wherein feeding back the second HARQ-ACK codebook under the second condition comprises:

removing HARQ-ACK bits corresponding to the first SPS PDSCH from the determined bit sequence, sequentially cascading the rest bits, and placing the rest bits at the tail of the HARQ-ACK bit sequence corresponding to the PDSCH group of a preset physical uplink shared channel group or at the tail of the whole codebook to obtain a second HARQ-ACK codebook; wherein the remaining bits are set to HARQ-ACK of the respective SPS PDSCH;

wherein the second condition comprises at least the following condition:

24. The HARQ-ACK feedback method according to claim 16, wherein the feeding back the first HARQ-ACK codebook on condition that the first condition is satisfied comprises:

employing the following operations to determine the first HARQ-ACK codebook:

wherein the first condition comprises at least the following conditions:

25. The HARQ feedback method according to claim 16, wherein feeding back the second HARQ-ACK codebook under the second condition comprises:

employing the following operations to determine a second HARQ-ACK codebook:

wherein the second condition comprises at least the following condition:

26. A terminal, comprising:

a first determining module, configured to determine a first semi-persistent scheduling physical downlink shared channel (SPS PDSCH), where the first SPS PDSCH does not need to feedback hybrid automatic repeat request acknowledgement (HARQ-ACK);

a second determining module, configured to determine, according to a preset rule and the first SPS PDSCH, a HARQ-ACK feedback behavior;

wherein the preset rules comprise at least one of the following rules:

27. A network node, comprising:

the first judgment module is used for judging the HARQ-ACK feedback behavior of the terminal according to a preset rule adopted by the terminal and the first SPS PDSCH;

wherein the preset rules comprise at least one of the following rules:

28. A terminal, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the hybrid automatic repeat request acknowledgement feedback method according to any of claims 1 to 15.

29. A network node, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the hybrid automatic repeat request acknowledgement feedback method according to any of claims 16 to 25.

30. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the hybrid automatic repeat request acknowledgement feedback method according to any one of claims 1 to 25.