CN114337959B

CN114337959B - HARQ-ACK feedback method, device, terminal and network side equipment

Info

Publication number: CN114337959B
Application number: CN202011074876.2A
Authority: CN
Inventors: 曾超君; 李娜
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2023-11-21
Anticipated expiration: 2040-10-09
Also published as: WO2022073497A1; CN114337959A

Abstract

The application discloses a HARQ-ACK feedback method, a device, a terminal and network side equipment, and relates to the technical field of communication. The method comprises the following steps: acquiring a feedback strategy adopted by HARQ-ACK feedback; and carrying out HARQ-ACK feedback according to the feedback strategy. The scheme of the application is used for solving the problem that the performance of HARQ-ACK transmission and downlink data transmission is affected by the fact that the HARQ-ACK feedback strategy cannot be configured in a personalized way to carry out HARQ-ACK feedback.

Description

HARQ-ACK feedback method, device, terminal and network side equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to a HARQ-ACK feedback method, a device, a terminal and network side equipment.

Background

There are various schemes for reducing the feedback load of HARQ-ACK (Hybrid Automatic Repeat reQuest-Acknowledgement of hybrid automatic repeat request), and different schemes for reducing the feedback load of HARQ-ACK are applicable to different scheduling configurations, such as different SPS (Semi-Persistent Scheduling ) configurations (Config).

Thus, when different HARQ-ACK feedback load mitigation schemes are configured for different schedules Config, the terminal cannot determine the HARQ-ACK feedback scheme, thereby affecting the performance of HARQ-ACK transmission and downlink data transmission.

Disclosure of Invention

The embodiment of the application aims to provide a HARQ-ACK feedback method, a device, a terminal and network side equipment, which can solve the problem that when a plurality of feedback strategies are configured, the HARQ-ACK feedback cannot be performed by individually configuring the HARQ-ACK feedback strategy, so that the performance of HARQ-ACK transmission and downlink data transmission is affected.

In a first aspect, an embodiment of the present application provides a HARQ-ACK feedback method, applied to a terminal, including:

acquiring a feedback strategy adopted by HARQ-ACK feedback;

and carrying out HARQ-ACK feedback according to the feedback strategy.

In a second aspect, an embodiment of the present application provides a HARQ-ACK feedback method, applied to a network side device, including:

transmitting a configuration signaling to a terminal, wherein the configuration signaling is used for configuring a feedback strategy adopted by HARQ-ACK feedback for the terminal, and the HARQ-ACK corresponds to one or a group of scheduling configuration;

and receiving HARQ-ACK information fed back by the terminal according to the feedback strategy.

In a third aspect, an embodiment of the present application provides an HARQ-ACK feedback device, including:

the acquisition module is used for acquiring a feedback strategy adopted by HARQ-ACK feedback;

and the first feedback sending module is used for carrying out HARQ-ACK feedback according to the feedback strategy.

In a fourth aspect, an embodiment of the present application provides an HARQ-ACK feedback device, including:

a sending module, configured to send a configuration signaling to a terminal, where the configuration signaling is configured to configure a feedback strategy adopted by HARQ-ACK feedback for the terminal, where the HARQ-ACK corresponds to one or a group of scheduling configurations;

and the first feedback receiving module is used for receiving the HARQ-ACK information fed back by the terminal according to the feedback strategy.

In a fifth aspect, embodiments of the present application also provide a communication device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction implementing the method according to the first aspect or the steps of the method according to the second aspect when executed by the processor.

In a sixth aspect, embodiments of the present application also provide a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the method according to the first aspect, or the steps of the method according to the second aspect.

In a seventh aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement a method according to the first aspect, or a method according to the second aspect.

In an eighth aspect, embodiments of the present application provide a program product stored in a non-volatile storage medium, the program product being executable by at least one processor to implement the method according to the first aspect or the steps of the method according to the second aspect.

In this way, in the embodiment of the application, by acquiring the feedback strategy adopted by the HARQ-ACK feedback and determining the corresponding HARQ-ACK feedback behavior, various HARQ-ACK feedback load alleviation strategies can be effectively utilized, and the performances of HARQ-ACK transmission and downlink data transmission are ensured.

Drawings

Fig. 1 is a block diagram of a wireless communication system;

fig. 2 is a flow chart of an HARQ-ACK feedback method applied to a terminal according to an embodiment of the present application;

FIG. 3 is a schematic illustration of an embodiment of the present application;

fig. 4 is a flow chart of an HARQ-ACK feedback method applied to a network side device according to an embodiment of the present application;

FIG. 5 is a block diagram of an apparatus corresponding to the method of FIG. 2;

FIG. 6 is a block diagram of an apparatus corresponding to the method of FIG. 4;

fig. 7 is a block diagram of a communication device according to an embodiment of the present application;

fig. 8 is a block diagram of a terminal according to an embodiment of the present application;

fig. 9 is a block diagram of a network side device according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the numerals so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may also be called a terminal Device or a User Equipment (UE), and the terminal 11 may be a terminal-side Device such as a mobile phone, a tablet Computer (Tablet Personal Computer), a Laptop (Laptop Computer) or a notebook (Personal Digital Assistant, PDA), a palm Computer, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet Device (Mobile Internet Device, MID), a Wearable Device (or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and the Wearable Device includes: a bracelet, earphone, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may be a base station or a core network, wherein the base station may be called a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

The HARQ-ACK feedback method provided by the embodiment of the present application is described in detail below through specific embodiments and application scenarios thereof with reference to the accompanying drawings.

The method of the embodiment of the application is applied to a terminal, such as a User Equipment (UE), which may refer to an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. The terminal may also be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device having wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device.

As shown in fig. 2, a HARQ-ACK feedback method according to an embodiment of the present application is applied to a terminal, and includes:

step 201, acquiring a feedback strategy adopted by HARQ-ACK feedback;

and step 202, performing HARQ-ACK feedback according to the feedback strategy.

Through steps 201 and 202, the terminal obtains a feedback strategy adopted by the HARQ-ACK feedback, and determines the corresponding HARQ-ACK feedback behavior, thereby effectively utilizing various HARQ-ACK feedback load alleviation strategies and guaranteeing the performances of HARQ-ACK transmission and downlink data transmission.

Optionally, step 201 includes: receiving configuration signaling; the configuration signaling is used for configuring a feedback strategy adopted by HARQ-ACK feedback for the terminal, and the HARQ-ACK corresponds to one or a group of scheduling configuration.

Here, the network side device sends configuration signaling for configuring a feedback policy for the terminal, where the feedback policy is used when the terminal performs HARQ-ACK feedback corresponding to one or a group of scheduling Config. In this step, the terminal determines a feedback strategy adopted when the HARQ-ACK feedback is executed later by acquiring the configuration signaling sent by the network side device.

In this way, the terminal will receive the configuration signaling sent by the network side device, and the configuration signaling indicates one or a group of HARQ-ACK feedback strategies corresponding to the scheduled Config, and determines the corresponding HARQ-ACK feedback behaviors under various configuration conditions, so that various HARQ-ACK feedback load alleviation strategies can be effectively utilized, and the performance of HARQ-ACK transmission and downlink data transmission can be ensured.

Optionally, in an embodiment of the present application, in a case where the one or a set of scheduling configurations is a semi-persistent scheduling SPS configuration, the feedback policy includes at least one of:

an acknowledgement ACK skip policy;

Negative acknowledgement, NACK, skip strategy;

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

Here, the ACK skip policy, the NACK skip policy, the HARQ-ACK bundling policy, and the HARQ-ACK disabling policy can all achieve the purpose of reducing the HARQ-ACK feedback load for the physical downlink shared channel (SPS PDSCH) of SPS Config.

ACK skip (skip) policy: when only the HARQ-ACK aiming at the SPS PDSCH needs to be fed back and the values of all the HARQ-ACKs are ACK, the terminal does not actually transmit the physical uplink control channel PUCCH carrying the SPS PDSCH HARQ-ACKs, otherwise, the HARQ-ACKs corresponding to the SPS PDSCH are fed back normally.

NACK skip strategy: when only the HARQ-ACK aiming at the SPS PDSCH needs to be fed back and the values of all the HARQ-ACKs are NACK, the terminal does not actually transmit the PUCCH carrying the SPS PDSCH HARQ-ACKs, otherwise, the HARQ-ACKs corresponding to the SPS PDSCH are fed back normally.

HARQ-ACK bundling (bundling) strategy: the N SPS PDSCH's in each period correspond to a single HARQ-ACK bit. The N SPS PDSCH's may be considered to correspond to N SPS Config's, and the periods of the N SPS Config's are all the same, differing only in offset.

HARQ-ACK disabling (disable) policy: the SPS PDSCH transmission does not need feedback HARQ-ACK, and the network ensures that the corresponding SPS PDSCH can be correctly transmitted when configuring transmission resources and attributes and activating the SPS PDSCH.

And the non-load-relieving strategy is to adopt a defined HARQ-ACK codebook construction flow to feed back the HARQ-ACK for each SPS PDSCH actual transmission or transmission opportunity without considering the HARQ-ACK feedback load relieving. This non-load mitigation strategy can in turn be understood as a normal HARQ-ACK feedback strategy.

In this way, the network side device may configure a corresponding feedback policy for each SPS Config or each group, and inform the terminal through configuration signaling, especially when the SPS Config is configured for service data with a certain characteristic (such as periodic service data, or quasi-periodic service data with delay jitter).

Optionally, in an embodiment of the present application, in a case where the one or a set of scheduling configurations are dynamic scheduling configurations, the feedback policy includes at least one of:

an ACK skipping policy;

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

Here, each feedback strategy is HARQ-ACK feedback for dynamically scheduled PDSCH, similar to SPS PDSCH, and will not be described again here.

Whereas for URLLC (ultra reliable low latency communication Ultra reliable and low latency communication) traffic, an ACK skipping strategy is preferred in the case of dynamic scheduling configurations due to the higher probability of feeding back ACKs. Here, dynamic scheduling may be understood as using scheduling DCI to independently indicate transmission of each or each group of PDSCH. In general, the scheduling DCI may be UE-specific DCI. Dynamic scheduling configuration may be understood as configuration for dynamic scheduling, including higher-level parameter configuration. Typically, the dynamic scheduling configuration may be treated as a single scheduling configuration.

For the case that the terminal does not receive the configuration signaling, optionally, step 201 includes:

if the configuration signaling for configuring the feedback strategy adopted by the HARQ-ACK feedback is not received, determining that the default strategy is the feedback strategy adopted by the HARQ-ACK feedback; wherein the default policy includes at least one of:

an ACK skipping policy;

a NACK skipping strategy;

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

For example, regardless of SPS configuration or dynamic scheduling configuration, the network side device can employ only at least one of ACK-skip policy, NACK-skip policy, HARQ-ACK bundling policy, HARQ-ACK disabling policy based on HARQ-ACK feedback load mitigation. Therefore, the terminal can directly perform HARQ-ACK feedback according to the default strategy under the condition that the terminal does not receive the configuration signaling.

Of course, for the case where no configuration signaling is received, the default strategy for HARQ-ACK feedback is not limited to a non-load mitigation strategy, and may be predefined or configured.

In the embodiment of the present application, the configuration signaling may be a higher layer signaling, and may be downlink control signaling DCI. Or the network still configures the initial/default HARQ-ACK feedback strategy through the high-level signaling, but when the HARQ-ACK feedback strategy is dynamically indicated in the DCI, the HARQ-ACK feedback strategy indicated by the DCI is actually used, otherwise, the HARQ-ACK feedback strategy configured by the high-level signaling is used. For example, for SPS PDSCH, indicated in the corresponding activation/reactivation DCI; for downlink dynamic scheduling, this may be indicated in the scheduling DCI.

In this embodiment, for the configuration signaling of the scheduling configuration group, optionally, the scheduling configuration is grouped based on a first target item, the first target item comprising at least one of:

grouping configuration of network side equipment;

a transmission priority;

the physical uplink control channel PUCCH cell group to which the physical uplink control channel PUCCH cell group belongs;

a serving cell to which the cell belongs;

the bandwidth part BWP to which it belongs.

As such, the grouping of the scheduling configuration may be based on the grouping configuration of the network side device. E.g. one or more SPS Config, which are the same or similar in service data characteristics for the service by the network side device, are configured into the same group. In particular, for one to more SPS Config serving the same periodic traffic (but whose period is not a configurable value in the protocol), or quasi-periodic traffic with delay jitter, the network-side device may configure them to belong to the same SPS Config group. Alternatively, each SPS Config corresponding to the same SPS Config group may be activated or deactivated simultaneously. Alternatively, a certain SPS Config group may consider all configured SPS configs, or only activated SPS configs, i.e. SPS configs in active state.

The scheduling of configured packets may be based on transmission priority. Wherein the transmission priority may be a priority of the scheduling configuration, and SPS Config corresponding to a certain priority may implicitly correspond to the same group. Here, the SPS Config corresponding to a certain priority may include all configured SPS configs, or only activated SPS configs. The transmission priority may be a priority explicitly indicated in the DCI when dynamically scheduled, or may be a default priority specified by a configuration or protocol when not explicitly indicated in the DCI.

The grouping of scheduling configurations may be based on the PUCCH Cell Group (Cell Group) to which it belongs. The network side equipment configures an HARQ-ACK feedback strategy for each PUCCH Cell Group, and the feedback strategy is applied to each SPS Config configured or activated on all Serving cells (Serving cells) corresponding to the PUCCH Cell Group, namely the network side equipment uniformly configures the HARQ-ACK feedback strategy for each SPS Config configured or activated on all Serving cells corresponding to the PUCCH Cell Group.

The grouping of the scheduling configuration may be based on the Serving Cell to which it belongs. The network configures an HARQ-ACK feedback strategy for each Serving Cell, and the feedback strategy is applied to each SPS Config configured or activated on the Serving Cell, namely the HARQ-ACK feedback strategy is uniformly configured for each SPS Config configured or activated on a certain Serving Cell.

The grouping of the scheduling configuration may also be based on the belonging BWP. The network configures HARQ-ACK feedback policies for each BWP, and the feedback policies are applied to the SPS configs configured or activated on the BWP, i.e. the HARQ-ACK feedback policies are uniformly configured for the SPS configs configured or activated on a certain BWP.

Thereafter, for each SPS Config group, the configuration employs at least one of: ACK skip policy, NACK skip policy, HARQ-ACK bundling policy, HARQ-ACK disabling policy, non-load mitigation policy, and informs the terminal through configuration signaling. Alternatively, for each SPS Config group, the configuration employs at least one of: the method comprises the steps of an ACK skipping strategy, a NACK skipping strategy, an HARQ-ACK binding strategy and an HARQ-ACK disabling strategy, and informing a terminal through configuration signaling, wherein when the terminal does not receive the configuration signaling, the terminal directly adopts a non-load relieving strategy to carry out HARQ-ACK feedback.

In the method of the embodiment of the present application, optionally, in the case where the feedback policy is a HARQ-ACK bundling policy, the one or a set of scheduling configurations have corresponding bundling identifiers.

Taking a certain SPS Config or SPS Config group as an example, when the HARQ-ACK bundling policy is adopted for feedback, the network side device configures a corresponding bundling identifier, such as a Bundle number, for the network side device. At this time, the SPS Config or SPS Config group with the same bundling identity will perform HARQ-ACK bundling feedback.

Of course, the plurality of scheduling configuration subgroups may be further divided for each set of scheduling configurations, optionally, each set of scheduling configurations includes a plurality of scheduling configuration subgroups, each scheduling configuration subgroup has a corresponding binding identifier, and one or more scheduling configurations are included in the scheduling configuration subgroups.

That is, when a certain SPS Config group configuration adopts the HARQ-ACK bundling policy, bundling identifiers, such as Bundle numbers, may be further configured for each SPS Config subgroup (e.g., each SPS Config or each SPS Config subset) of the SPS Config group, respectively. The SPS Config subgroup here may be individual SPS configs or individual SPS Config subsets, which may be regarded as further set divisions for this SPS Config group. While the SPS Config or SPS Config subgroup with the same bundling identity will perform HARQ-ACK bundling feedback.

In addition, in this embodiment, after determining the feedback policy through the configuration signaling, the terminal performs feedback processing. When each SPS Config determines its corresponding HARQ-ACK feedback policy (higher layer configuration or DCI indication), or when downlink dynamic scheduling or downlink dynamic scheduling for a certain priority determines its corresponding HARQ-ACK feedback policy (higher layer configuration or DCI indication), the terminal performs a corresponding operation of the corresponding feedback policy when HARQ-ACK feedback is required. Optionally, step 202 includes:

in case that the HARQ-ACK feedback corresponds to only the SPS physical downlink shared channel PDSCH, or the fed-back HARQ-ACK codebook uses a dynamic codebook or an enhanced dynamic codebook and the HARQ-ACK codebook includes HARQ-ACKs corresponding to the SPS PDSCH, at least one of the following is performed for the HARQ-ACK feedback of the SPS PDSCH:

if the feedback strategy is a single feedback strategy, HARQ-ACK feedback is carried out according to the single feedback strategy;

and if the feedback strategy is a plurality of feedback strategies, determining a target feedback strategy, and carrying out HARQ-ACK feedback according to the target feedback strategy.

Here, for the case that the HARQ-ACK feedback corresponds to only the SPS PDSCH, or the case that the dynamic codebook or the enhanced dynamic codebook is used, but the HARQ-ACK codebook includes the HARQ-ACK corresponding to the SPS PDSCH, when the feedback strategy adopted in the feedback is a single feedback strategy, HARQ-ACK feedback is performed for the SPS PDSCH according to the single feedback strategy; and when the feedback strategy is multiple, determining a target feedback strategy, and then carrying out HARQ-ACK feedback on the SPS PDSCH according to the target feedback strategy. Here, for the case where a dynamic codebook or an enhanced dynamic codebook is used and the HARQ-ACK codebook includes HARQ-ACK corresponding to the SPS PDSCH, it may be understood that when a non-load-shedding policy is adopted, the HARQ-ACK codebook includes HARQ-ACK bit sequences corresponding to the SPS PDSCH, but when other feedback policies are adopted, the HARQ-ACK codebook actually fed back by the terminal may not include the HARQ-ACK bit sequences corresponding to the SPS PDSCH or may not entirely include the HARQ-ACK bit sequences corresponding to the SPS PDSCH.

Optionally, for the case that HARQ-ACK feedback corresponds to SPS PDSCH only, the same HARQ-ACK feedback behavior may be employed without distinguishing whether the higher layer is configured with a semi-static codebook or a dynamic codebook, or an enhanced dynamic codebook.

It should be appreciated that SPS Config, which is configured as HARQ-ACK disallowing, need not be considered for both cases, as it does not have corresponding HARQ-ACK feedback. The HARQ-ACK codebook will not be involved in the HARQ-ACK disable strategy at this time. For both cases, the feedback strategy adopted for HARQ-ACK feedback of SPS PDSCH involves at least one of: ACK skipping policy, NACK skipping policy, HARQ-ACK bundling policy, and non-load mitigation policy.

To simplify HARQ-ACK feedback, an alternative embodiment is that the terminal does not expect HARQ-ACKs in one HARQ-ACK codebook to correspond to different HARQ-ACK feedback strategies, or that the terminal does not expect any one of the HARQ-ACKs in one HARQ-ACK codebook to correspond to a combination of HARQ-ACK feedback strategies (each combination involving two or more HARQ-ACK feedback strategies). Therefore, the network side equipment can ensure that the HARQ-ACK in any HARQ codebook organized and fed back by the terminal corresponds to only a single HARQ-ACK feedback strategy through configuration or scheduling and other implementation modes. A single HARQ-ACK codebook may be understood herein as a HARQ-ACK bit sequence that a terminal organizes and schedules to feed back in a time unit such as a certain time slot or sub-slot when a non-load mitigation strategy is employed. Alternatively, this HARQ-ACK bit sequence (based on a non-load-shedding policy) may be referred to as a nominal HARQ-ACK bit sequence (of one HARQ-ACK codebook). When the configured HARQ-ACK feedback strategy is adopted to actually organize the HARQ-ACK bit sequence corresponding to the HARQ-ACK codebook (i.e., actually needed to be fed back), the feedback is actually performed only when the HARQ-ACK bit sequence is not null (i.e., the sequence length is greater than 0). Alternatively, this HARQ-ACK bit sequence (based on the configured feedback strategy, or the target feedback strategy mentioned later) may be referred to as the actual HARQ-ACK bit sequence (of one HARQ-ACK codebook). When feedback is performed based on a single feedback strategy, the behavior corresponding to the feedback strategy may be executed.

Optionally, the performing HARQ-ACK feedback according to the feedback policy includes:

and executing at least one of the following in the case that the single feedback strategy is an ACK skipping strategy or a NACK skipping strategy or in the case that the target feedback strategy is the ACK skipping strategy or the NACK skipping strategy:

when all HARQ-ACKs corresponding to SPS configuration are skipped, skipping transmission of HARQ-ACK codebook corresponding to SPS PDSCH, or feeding back HARQ-ACK codebook with first bit number, wherein the HARQ-ACK codebook with first bit number is determined based on a feedback strategy;

and when the HARQ-ACK corresponding to the SPS configuration is skipped, generating an HARQ-ACK codebook according to a non-load reduction strategy.

If the ACK skip policy or the NACK skip policy is uniformly adopted in the HARQ-ACK feedback of the SPS PDSCH, when all HARQ-ACKs corresponding to the SPS Config can be skipped, the terminal skip the transmission of the HARQ-ACK codebook corresponding to the SPS PDSCH, otherwise, the terminal reports the complete HARQ-ACK codebook. All SPS configs mentioned here are understood to be all configured or activated SPS configs corresponding to the current HARQ-ACK codebook. The correspondence here may be determined based on a nominal HARQ-ACK bit sequence of the current HARQ-ACK codebook.

In addition, when all HARQ-ACKs corresponding to SPS Config can be skip, the HARQ-ACK codebook with the first bit number may also be fed back, otherwise, the terminal reports the complete HARQ-ACK codebook. The HARQ-ACK codebook with the first bit number is set based on a feedback strategy, and comprises the value of the first bit number and the value of each bit in the HARQ-ACK codebook. An alternative implementation is that the first number of bits is 1, i.e. the HARQ-ACK codebook fed back by the terminal contains only 1 bit. Optionally, the 1-bit HARQ-ACK codebook is set to ACK when the feedback employs an ACK skip policy; and setting the feedback as NACK when the feedback adopts a NACK triggering strategy. Wherein 1-bit HARQ-ACKs may be carried using PUCCH format 0/1. The method can be applied to when the PUCCH transmission is in Unlocked band, the terminal needs to feed back the HARQ-ACK PUCCH under different conditions (namely, the PUCCH transmission carrying the HARQ-ACK bit sequence is executed), but when the PUCCH transmission is in skip (namely, when ACK skip is adopted and all HARQ-ACKs are ACK, or when NACK skip is adopted and all HARQ-ACKs are NACK), the feedback load can be reduced by reducing the HARQ-ACK feedback bit, so that the terminal power consumption is reduced and the uplink interference in a system is reduced. When the terminal fails LBT before HARQ-ACK PUCCH transmission, the network side equipment can not correctly receive the PUCCH, and the network side equipment can judge that the LBT fails at the moment, and further acquire the HARQ-ACK which is not successfully transmitted through mechanisms such as retransmission and the like.

in the case that the single feedback strategy is an HARQ-ACK bundling strategy, or in the case that the target feedback strategy is an HARQ-ACK bundling strategy, in the process of generating the HARQ-ACK bit sequence corresponding to the first serving cell, the loop is performed based on the second target item;

wherein the second target item comprises at least one of:

SPS configuration identification;

binding an identification;

SPS configuration group identification;

wherein the first serving cell is each serving cell involved in generating the HARQ-ACK codebook.

Here, when the HARQ-ACK bundling policy is uniformly adopted for the HARQ-ACK feedback of the SPS PDSCH, the HARQ-ACK bit sequence corresponding to the first serving cell is generated based on at least one of the following: the SPS configuration identification, the binding identification (such as the Bundle number) and the SPS configuration group identification (such as the SPS Config group number) are circulated. That is, for Serving cell1 (one Serving cell involved in generating the HARQ-ACK codebook), when organizing the HARQ-ACK bit sequence corresponding to Serving cell1 in the HARQ-ACK codebook, the HARQ bit sequences output in each cycle may be looped based on at least one of the second target items, and connected end to end in a loop order.

Wherein, based on the SPS configuration identification (e.g., SPS Config index) loop, the loop may be from small to large or from large to small based on SPS Config index; at this time, the HARQ-ACK bit corresponding to a Bundle may occupy the HARQ-ACK bit position corresponding to the minimum SPS Config index or the maximum SPS Config index or the specified SPS Config index corresponding to the Bundle, and other SPS Config indexes corresponding to the Bundle are ignored in the cycle. The value of the HARQ-ACK bit corresponding to a Bundle (which may be indicated by a Bundle identification or Bundle number) may be determined based on the following operations. Optionally, when the HARQ-ACK corresponding to a Bundle is determined to be ACK, the HARQ-ACK bit corresponding to the Bundle may have a value of 1; when the HARQ-ACK corresponding to a Bundle is determined to be NACK, the HARQ-ACK bit corresponding to the Bundle may take a value of 0.

The loop may be based on a Bundle identification (e.g., bundle number), from small to large loop or from large to small loop based on Bundle number.

Based on the SPS configuration group identification (e.g., SPS Config group number), the cycle may be from small to large or from large to small based on the SPS Config group number. A certain SPS Config group may correspond to a single or multiple bundle identities (for the latter it is understood that a certain subset of SPS configs contained in this SPS Config group corresponds to a single bundle identity). When multiple SPS Config groups or SPS Config subsets correspond to the same bundling identifier, the HARQ-ACK bit corresponding to the bundling identifier may occupy the minimum SPS configuration group identifier/SPS Config subset index corresponding to the bundling identifier, or the maximum SPS configuration group identifier/SPS Config subset index, or specify the HARQ-ACK bit position corresponding to the SPS configuration group identifier/SPS Config subset index, and the other SPS configuration group identifiers/SPS Config subset index corresponding to the bundling identifier are ignored in the cycle. For the case that a certain SPS Config group contains multiple SPS Config subsets, the respective SPS Config subsets contained in the SPS Config group, or the related respective bundling identifications, may be cycled from small to large or from large to small, which will not be described in detail herein.

In addition, when the HARQ-ACK bundling policy is uniformly adopted, when the HARQ-ACK codebook is organized, the outermost cycle may still be based on Serving cell index, for example, from small to large cycle or from large to small cycle based on Serving cell index, and then a corresponding HARQ-ACK bit sequence is generated for each Serving cell index, and the HARQ-ACK bit sequences corresponding to Serving cell index are connected end to end according to a cyclic sequence, which is not described herein.

Optionally, in this embodiment, the HARQ-ACK corresponding to the bundling identifier is determined according to at least one of the following:

in the case that the decoding result of at least one target transport block is ACK, the HARQ-ACK corresponding to the binding identifier is ACK;

and under the condition that the decoding result of all the target transport blocks is NACK, the HARQ-ACK corresponding to the binding identification is NACK.

Or, optionally, the HARQ-ACK corresponding to the bundling identifier is determined according to at least one of the following:

in the case that the decoding result of all the target transport blocks is ACK, the HARQ-ACK corresponding to the binding identification is ACK;

and under the condition that the decoding result of at least one target transport block is NACK, the HARQ-ACK corresponding to the binding identification is NACK.

The target transport blocks are transport blocks corresponding to all SPS PDSCH opportunities in N periods, the SPS PDSCH opportunities correspond to a first SPS configuration, the first SPS configuration corresponds to a first binding identifier, and the periods correspond to the first binding identifier.

Thus, for a Bundle number, its corresponding HARQ-ACK may be determined based on the following manner: based on the period (including the start time and the duration) determined by the minimum SPS Config index, the maximum SPS Config index, or the specified SPS Config index corresponding to the Bundle, the SPS PDSCH occasions (occasin) corresponding to the SPS configs corresponding to the Bundle number correspond to a single Bundle instance (i.e., the SPS PDSCH occasions can be considered as being subordinate to the Bundle instance) within N periods (e.g., n=1). For a certain transport block i (typically, only single codeword transmission is considered, i.e. a single transport block, where i=0) of a certain Bundle instance, when the decoding result of at least one transport block i of SPS PDSCH occasion in all SPS PDSCH occasion corresponding to the Bundle instance is ACK, setting the HARQ-ACK corresponding to the transport block i of the Bundle instance as ACK; otherwise set to NACK. Alternatively, it may be required that the HARQ-ACK corresponding to the transport block i of the Bundle instance is set to ACK only when the decoding results of all transport blocks i of SPS PDSCH occasion corresponding to the Bundle instance are ACK; otherwise set to NACK. For each transport block index (i.e., i) for each Bundle instance, a corresponding single HARQ-ACK bit may be included in the actually fed back HARQ-ACK codebook. Optionally, when the HARQ-ACK corresponding to a certain transport block index i of a certain Bundle instance is set to ACK, the corresponding HARQ-ACK bit may have a value of 1; when the HARQ-ACK corresponding to a certain transport block index i of a certain Bundle instance is set to NACK, the corresponding HARQ-ACK bit may take a value of 0. When a certain HARQ-ACK codebook needs to include a certain binding identifier or a plurality of HARQ-ACKs corresponding to Bundle instances corresponding to Bundle numbers, each Bundle instance corresponding to the Bundle identifier or Bundle numbers may be further traversed circularly in time from front to back or from back to front or in a designated order, HARQ-ACK bits corresponding to each Bundle instance corresponding to the Bundle identifier or Bundle numbers are output and connected end to end according to the circulation order, so that the HARQ-ACK bit sequence corresponding to the Bundle identifier or Bundle numbers is obtained, which is not described herein. Of course, if dual codeword transmission is employed, the bundling identification will feed back HARQ-ACK for each codeword, i.e. i=0 or 1 as described above.

Alternatively, in the case that the single feedback strategy is a non-load-shedding strategy, the HARQ-ACK codebook may be organized and reported based on the prior art or the specification.

In this embodiment, optionally, the terminal may support HARQ-ACK in one HARQ-ACK codebook corresponding to one or more HARQ-ACK feedback strategies. When the HARQ-ACK in one HARQ-ACK codebook corresponds to a plurality of HARQ-ACK feedback strategies, the terminal determines the final target feedback strategy when organizing and feeding back the HARQ-ACK codebook. Optionally, the target feedback strategy is: a predefined or preconfigured feedback strategy, or,

and based on a preset rule, determining a feedback strategy in the multiple feedback strategies.

In particular, in one aspect, the target feedback policy may be a feedback policy specified by a protocol or pre-configured by a higher layer. For example, when the HARQ-ACK in a certain HARQ-ACK codebook corresponds to two or more HARQ-ACK feedback strategies, the protocol specifies or higher layer pre-configures a certain feedback strategy to be the target feedback strategy, such as a non-load-reducing strategy. At this time, when judging that the current HARQ-ACK codebook to be organized corresponds to two or more HARQ-ACK feedback strategies, the terminal does not pay attention to the specific HARQ-ACK feedback strategies, directly adopts a non-load reducing strategy, and completely reports the HARQ-ACKs of all SPS PDSCH corresponding to the HARQ-ACK codebook.

Still alternatively, as shown in table 1, the actually adopted HARQ-ACK feedback strategy (i.e., the target feedback strategy) corresponding to the various HARQ-ACK feedback strategy combinations that may be corresponding to a single HARQ-ACK codebook is exemplarily given, and such correspondence may be specified by a protocol or configured through higher layer signaling.

TABLE 1

Therefore, when the terminal judges that the HARQ-ACK codebook to be organized currently corresponds to two or more HARQ-ACK feedback strategies through configuration signaling, the terminal can determine the corresponding target feedback strategy by finding the corresponding row through the table 1 based on the HARQ-ACK feedback strategy combination formed by the corresponding HARQ-ACK feedback strategies, and the target feedback strategy is used for actually organizing the HARQ-ACK codebook.

On the other hand, the target feedback strategy is determined among a plurality of feedback strategies based on preset rules. For example, the protocol specifies or higher layers pre-configure the index corresponding to each HARQ-ACK feedback policy, one possible index being: 0-non-load mitigation strategy; 1-HARQ-ACK bundling;2-NACK skip; 3-ACK skip. The preset rules may be one or more of the following:

selecting the HARQ-ACK feedback strategy with the minimum index or the maximum index;

when there is some HARQ-ACK feedback strategy (e.g., a non-load mitigation strategy), such HARQ-ACK feedback strategy is always selected;

When there are certain or some HARQ-ACK feedback strategies (e.g., ACK triggering and NACK triggering are present as well), the specified HARQ-ACK feedback strategy (e.g., non-load mitigation strategy) is always selected.

In addition, optionally, when the target feedback policy includes the multiple feedback policies, a HARQ-ACK codebook corresponding to each SPS configuration is generated according to each feedback policy. Here, it can be understood that each SPS Config corresponding to the current HARQ-ACK codebook performs corresponding HARQ-ACK feedback according to the respective configured HARQ-ACK feedback policy. The HARQ-ACK bit sequences output by each SPS Config based on its configured HARQ-ACK feedback strategy may be concatenated end to end based on a predefined cyclic order, forming a complete HARQ-ACK codebook.

When the HARQ-ACK codebook only contains HARQ-ACKs for the SPS PDSCH, the cyclic order of the HARQ-ACK bit sequence corresponding to the organization codebook may be: serving cell index-SPS PDSCH configuration index-DL slot index, i.e., a small to large or large to small cycle is performed based on DL slot index, then a small to large or large to small cycle is performed based on SPS PDSCH configuration index (SPS configuration index), and finally a small to large or large to small cycle is performed based on Serving cell index (serving cell index); the HARQ bit sequences output by each cycle are sequentially connected end to form a single HARQ-ACK bit sequence which is used as the HARQ-ACK codebook to be fed back. An example of this reporting can be seen in fig. 3.

Of course, for some HARQ-ACK feedback policy combinations, if each SPS Config reports according to each configured HARQ-ACK feedback policy, it may cause blind detection of a network side device for more Codebook sizes (Codebook Size; length of a single HARQ-ACK bit sequence corresponding to the HARQ-ACK Codebook to be fed back) or confusion of bit mapping (PDSCH reception < - > HARQ-ACK bits). Thus, reporting operations may be further limited. Alternatively, the process may be carried out in a single-stage,

when the SPS PDSCH corresponding to the HARQ-ACK codebook is based only on ACK-skip policy and NACK-skip policy feedback, and the corresponding SPS configuration or SPS configuration group skips HARQ-ACKs,

skipping transmission of the HARQ-ACK codebook corresponding to the SPS PDSCH; or,

feeding back a HARQ-ACK codebook with a second bit number and a third bit number, wherein the HARQ-ACK with the second bit number corresponds to a first SPS configuration or SPS configuration group, the HARQ-ACK with the third bit number corresponds to a second SPS configuration or SPS configuration group, the first SPS configuration or SPS configuration group adopts an ACK skipping strategy, and the second SPS configuration or SPS configuration group adopts a NACK skipping strategy; or,

and feeding back a fourth-bit-number HARQ-ACK codebook, wherein the fourth-bit-number HARQ-ACK codebook is used for indicating that the original HARQ-ACK codebook is skipped to the network side equipment.

Here, when the SPS PDSCH corresponding to the HARQ-ACK codebook involves both ACK triggering and NACK triggering and only both HARQ-ACK feedback strategies are involved, the terminal skips the transmission of the HARQ-ACK codebook corresponding to the SPS PDSCH only when both SPS Config or SPS Config groups corresponding to both HARQ-ACK feedback strategies can trigger the HARQ-ACKs corresponding to the SPS PDSCH. Or, the second bit number (for example, 1 bit) of HARQ-ACKs (optionally, the value is ACK) is fed back for one or more SPS configs corresponding to the ACK skip, and the third bit number (for example, 1 bit) of HARQ-ACKs (optionally, the value is NACK) is fed back for one or more SPS configs corresponding to the NACK skip, so as to form a HARQ-ACK codebook with a predefined or preconfigured bit number (for example, 2 bits). Here, the predefined or preconfigured number of bits is at least the second number of bits plus the third number of bits. The sequence between the HARQ-ACK bits corresponding to the ACK skip and the HARQ-ACK bits corresponding to the NACK skip may be specified by a protocol or configured based on a higher layer. Or, the terminal feeds back the HARQ-ACK codebook of the fourth bit number (e.g., 1 bit) HARQ-ACK, where the 1 bit is used to indicate to the network side device that the original HARQ-ACK codebook has been skipped (skip), and the value of the HARQ-ACK codebook may be specified by the protocol or based on a higher layer configuration, for example, set to ACK. Wherein the original HARQ-ACK codebook is the HARQ-ACK codebook corresponding to the SPS PDSCH, alternatively may be the HARQ-ACK bit sequence corresponding to the SPS PDSCH when the non-load mitigation strategy is adopted, or the nominal HARQ-ACK bit sequence of the HARQ-ACK codebook mentioned in the foregoing. Of course, if the SPSPS PDSCH corresponding to the HARQ-ACK codebook does not meet the above condition (namely, the SPS Config or SPS Config group corresponding to the two HARQ-ACK feedback strategies can be used for the HARQ-ACK corresponding to skip), the terminal feeds back all the HARQ-ACKs comprising the original HARQ-ACK codebook.

Of course, when the dynamic codebook or the enhanced dynamic codebook is adopted, only the HARQ-ACK bit sequence corresponding to the SPS PDSCH at the tail of the fed back HARQ-ACKs is replaced.

Optionally, when the SPS PDSCH corresponding to the HARQ-ACK codebook is fed back based on an ACK skipping policy and/or a NACK skipping policy and other feedback policies and both SPS configurations or SPS configuration groups corresponding to the ACK skipping policy and/or the NACK skipping policy skip HARQ-ACKs, the HARQ-ACK codebook corresponding to the fed back SPS PDSCH only includes HARQ-ACK bit sequences obtained based on the other feedback policies;

the other feedback strategies include at least one of:

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

Here, the other HARQ-ACK feedback policy is at least one policy other than the ACK-skip policy and the NACK-skip policy among the above-described ACK-skip policy, NACK-skip policy, HARQ-ACK bundling policy, HARQ-ACK disabling policy, and non-load-mitigation policy. When SPS PDSCH corresponding to the HARQ-ACK codebook relates to ACK skip and/or NACK skip and other HARQ-ACK feedback strategies, a terminal can ignore a corresponding HARQ-ACK bit sequence when organizing the HARQ-ACK codebook only when SPS Config or SPS Config group corresponding to the ACK skip and/or NACK skip can skip the corresponding HARQ-ACK, and only organizes the corresponding HARQ-ACK bit sequence according to the configured HARQ-ACK feedback strategy aiming at the rest SPS Config or SPS Config group; otherwise, the terminal feeds back all HARQ-ACKs comprising the HARQ-ACK codebook of the corresponding SPS PDSCH.

In addition, for the case that the target feedback strategy is a plurality of feedback strategies, when the SPS PDSCH corresponding to the HARQ-ACK codebook does not relate to ACK triggering and NACK triggering, each SPS Config or SPS Config group is reported according to the configured HARQ-ACK feedback scheme. The organization of the HARQ-ACK bit sequence of the SPS Config or SPS Config group corresponding to the HARQ-ACK bundling may refer to the above-described process.

Since the semi-static codebook is the Type-1 codebook, or the One-time (One-shot) codebook is the Type-3 codebook, the codebook size thereof, i.e., the number of bits contained in the corresponding HARQ-ACK codebook, is based on the semi-static configuration. At least one HARQ-ACK bit in these codebooks corresponds to SPS PDSCH reception because HARQ-ACK bits corresponding to SPS PDSCH reception may be more scattered and interleaved with HARQ-ACK bits of the dynamically scheduled PDSCH. The problem of map confusion (mapping between PDSCH reception or HARQ process < >, HARQ-ACK bits) in the codebook is easily caused by the fact that the HARQ-ACK bits corresponding to SPS PDSCH reception are skipped. Optionally, step 102 includes:

under the condition that the feedback HARQ-ACK codebook uses a semi-static codebook or a disposable codebook, if each bit in the generated HARQ-ACK codebook corresponds to NACK or ACK, skipping the feedback; or,

Feeding back a HARQ-ACK codebook with a fifth bit number, wherein the HARQ-ACK codebook with the fifth bit number is an original HARQ-ACK codebook; or,

and feeding back a sixth-bit-number HARQ-ACK codebook, wherein the sixth-bit-number HARQ-ACK codebook is used for indicating that the original HARQ-ACK codebook is skipped to the network side equipment.

Therefore, when the HARQ-ACK bit values in the HARQ-ACK codebook are NACK or ACK, the terminal can ignore the feedback; alternatively, a sixth number of bits (e.g., 1 bit) of HARQ-ACK codebook is fed back, and the 1 bit is used to indicate to the network side device that the original HARQ-ACK codebook has been skipped, where the value may be specified by the protocol or based on a higher layer configuration. Optionally, when the HARQ-ACK bits in the HARQ-ACK codebook are NACK, the bits in the HARQ-ACK codebook of the sixth number of bits (e.g., 1 bit) are NACK, and when the HARQ-ACK bits in the HARQ-ACK codebook are ACK, the bits in the HARQ-ACK codebook of the sixth number of bits (e.g., 1 bit) are ACK; otherwise, reporting normally. And for One-shot codebook, when the reported NDI is configured, NDI bit in HARQ-ACK codebook does not participate in NACK/ACK judgment.

Of course, in the case that the feedback HARQ-ACK codebook uses a semi-static codebook or a one-time codebook, the feedback is not limited to the above manner, and the conventional HARQ-ACK codebook may be organized and fed back according to a non-load-reducing strategy.

Optionally, in order to avoid the terminal from judging the value of a bit in the HARQ-ACK codebook and executing the skip operation when certain conditions are met, the complexity of terminal implementation is reduced, and the terminal does not expect to configure HARQ-ACK feedback strategies such as ACK triggering/NACK triggering/HARQ-ACK bundling/HARQ-ACK disable when configuring to use a semi-static (Type-1) codebook and/or One-shot (Type-3) codebook for SPS Config, i.e. configure other HARQ-ACK feedback strategies except for normal HARQ-ACK feedback, or configure other HARQ-ACK feedback strategies except for a load-relieving strategy. Optionally, the above configuration may be allowed, but the terminal does not expect to configure HARQ-ACKs corresponding to SPS configs of HARQ-ACK feedback policies such as ACK triggering/NACK triggering/HARQ-ACK bundling/HARQ-ACK disarming, and report the HARQ-ACKs corresponding to SPS configs together with the semi-static codebook and/or the One-shot codebook, i.e. by implementing avoiding fusion of the HARQ-ACKs corresponding to SPS configs and the semi-static codebook and/or the One-shot codebook.

For a dynamic (Type-2) codebook or an enhanced dynamic codebook, a HARQ-ACK bit sequence corresponding to the SPS PDSCH is appended after a HARQ-ACK bit sequence corresponding to the dynamic scheduling PDSCH. At this time, the processing of the HARQ-ACK bit sequence corresponding to the SPS PDSCH is similar to the processing of the HARQ-ACK feedback corresponding only to the SPS PDSCH, and will not be described again here.

In this embodiment, when the downlink dynamic scheduling or the downlink dynamic scheduling with a certain priority determines the corresponding HARQ-ACK feedback strategy, the HARQ-ACK bit sequence corresponding to the downlink dynamic scheduling in the entire HARQ-ACK codebook may be regarded as the HARQ-ACK bit sequence corresponding to the single SPS Config or the single SPS Config group, and the HARQ-ACK bit sequences corresponding to other SPS Config or SPS Config groups corresponding to the HARQ-ACK codebook may be used together with the HARQ-ACK bit sequences corresponding to the other SPS Config or SPS Config groups only to perform the processing when the HARQ-ACK feedback corresponds to the SPS PDSCH.

In this way, the embodiment can effectively reduce SPS PDSCH HARQ-ACK feedback load by introducing the personalized configuration method of the HARQ-ACK feedback strategy for SPS Config and determining the corresponding HARQ-ACK feedback behavior in the mixed configuration.

As shown in fig. 4, a HARQ-ACK feedback method according to an embodiment of the present application is applied to a network side device, and includes:

step 401, a configuration signaling is sent to a terminal, wherein the configuration signaling is used for configuring a feedback strategy adopted by HARQ-ACK feedback for the terminal, and the HARQ-ACK corresponds to one or a group of scheduling configurations;

and step 402, receiving HARQ-ACK information fed back by the terminal according to the feedback strategy.

It should be noted that, in the above embodiment, the terminal uses the HARQ-ACK feedback method to perform feedback, which is not described herein.

Optionally, in the case where the one or a set of scheduling configurations is a semi-persistent scheduling, SPS, configuration, the feedback policy includes at least one of:

an acknowledgement ACK skip policy;

negative acknowledgement, NACK, skip strategy;

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

Optionally, in the case that the one or a set of scheduling configurations is a dynamic scheduling configuration, the feedback policy includes at least one of:

an ACK skipping policy;

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

Optionally, the method further comprises:

receiving the terminal in case the configuration signaling is not received,

HARQ-ACK information fed back according to a default strategy; wherein the default policy includes at least one of:

an ACK skipping policy;

a NACK skipping strategy;

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

Optionally, the scheduling configuration is grouped based on a first target item, the first target item comprising at least one of:

Grouping configuration of network side equipment;

a transmission priority;

a serving cell to which the cell belongs;

the bandwidth part BWP to which it belongs.

Optionally, in the case that the feedback policy is a HARQ-ACK bundling policy, the one or a set of scheduling configurations has a corresponding bundling identification.

Optionally, each set of scheduling configurations includes a plurality of scheduling configuration subgroups, each scheduling configuration subgroup having a corresponding binding identifier, and one or more scheduling configurations are included in the scheduling configuration subgroup.

The method introduces a personalized configuration method of the HARQ-ACK feedback strategy aiming at SPS Config, determines the corresponding HARQ-ACK feedback behavior during mixed configuration, and can effectively reduce SPS PDSCH HARQ-ACK feedback load.

It should be noted that, the network side device applying the method can receive the feedback performed by the terminal in the previous embodiment, and in the above method embodiment, the implementation of the network side device is applicable to the method, and the same technical effects can be achieved.

The execution body of the HARQ-ACK feedback method provided by the embodiment of the present application may be an HARQ-ACK feedback device, or a control module in the HARQ-ACK feedback device for executing the HARQ-ACK feedback method. In the embodiment of the application, the HARQ-ACK feedback device is taken as an example to execute the HARQ-ACK feedback loading method, and the HARQ-ACK feedback method provided by the embodiment of the application is described.

As shown in fig. 5, a HARQ-ACK feedback device according to an embodiment of the present application includes:

an obtaining module 510, configured to obtain a feedback policy adopted by HARQ-ACK feedback;

and a first feedback module 520, configured to perform HARQ-ACK feedback according to the feedback policy.

Optionally, the obtaining module 510 is further configured to receive configuration signaling; the configuration signaling is used for configuring a feedback strategy adopted by HARQ-ACK feedback for the terminal, and the HARQ-ACK corresponds to one or a group of scheduling configuration.

an acknowledgement ACK skip policy;

negative acknowledgement, NACK, skip strategy;

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

an ACK skipping policy;

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

Optionally, the obtaining module 510 is further configured to determine that the default policy is a feedback policy adopted by HARQ-ACK feedback if no configuration signaling for configuring the feedback policy adopted by HARQ-ACK feedback is received; wherein the default policy includes at least one of:

An ACK skipping policy;

a NACK skipping strategy;

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

grouping configuration of network side equipment;

a transmission priority;

a serving cell to which the cell belongs;

the bandwidth part BWP to which it belongs.

Optionally, the first feedback module is further configured to:

Wherein the second target item comprises at least one of:

SPS configuration identification;

binding an identification;

SPS configuration group identification;

Optionally, the HARQ-ACK corresponding to the bundling identifier is determined according to at least one of the following:

Optionally, the target transport blocks are transport blocks of all SPS PDSCH occasions within N periods, where the SPS PDSCH occasions correspond to a first SPS configuration, and the first SPS configuration corresponds to a first bundling identifier.

Optionally, the target feedback strategy is: a predefined or preconfigured feedback strategy, or,

Optionally, if the target feedback policy includes the multiple feedback policies, generating HARQ-ACK codebooks corresponding to each SPS configuration according to each feedback policy.

Optionally, the first feedback module is further configured to:

When the SPS PDSCH corresponding to the HARQ-ACK codebook is fed back based on an ACK skipping strategy and/or a NACK skipping strategy and other feedback strategies, and the SPS configuration or SPS configuration group corresponding to the ACK skipping strategy and/or the NACK skipping strategy skips the HARQ-ACK, the HARQ-ACK codebook corresponding to the fed back SPS PDSCH only comprises the HARQ-ACK bit sequence obtained based on the other feedback strategies;

the other feedback strategies include at least one of:

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

Optionally, the first feedback module is further configured to:

The device introduces a personalized configuration method of the HARQ-ACK feedback strategy aiming at SPS Config, determines the corresponding HARQ-ACK feedback behavior during mixed configuration, and can effectively reduce SPS PDSCH HARQ-ACK feedback load.

It should be noted that, the device is a device to which the HARQ-ACK feedback method applied to the terminal is applied, and the implementation manner of the embodiment of the method is applicable to the device, so that the same technical effects can be achieved.

The HARQ-ACK feedback device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device may be a mobile electronic device or a non-mobile electronic device. By way of example, the mobile electronic device may be a cell phone, tablet computer, notebook computer, palm computer, vehicle mounted electronic device, wearable device, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), netbook or personal digital assistant (personal digital assistant, PDA), etc., and the non-mobile electronic device may be a server, network attached storage (Network Attached Storage, NAS), personal computer (personal computer, PC), television (TV), teller machine or self-service machine, etc., and embodiments of the present application are not limited in particular.

The HARQ-ACK feedback device in the embodiment of the present application may be a device with an operating system. The operating system may be an Android operating system, an ios operating system, or other possible operating systems, and the embodiment of the present application is not limited specifically.

The HARQ-ACK feedback device provided by the embodiment of the present application can implement each process implemented by the terminal in the method embodiment of fig. 2, and in order to avoid repetition, a detailed description is omitted here.

As shown in fig. 6, an HARQ-ACK feedback device according to an embodiment of the present application includes:

a sending module 610, configured to send a configuration signaling to a terminal, where the configuration signaling is configured to configure a feedback policy adopted by HARQ-ACK feedback for the terminal, where the HARQ-ACK corresponds to one or a group of scheduling configurations;

and a first feedback receiving module 620, configured to receive HARQ-ACK information fed back by the terminal according to the feedback policy.

an acknowledgement ACK skip policy;

negative acknowledgement, NACK, skip strategy;

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

an ACK skipping policy;

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

Optionally, the apparatus further comprises:

A second feedback receiving module, configured to receive the configuration signaling from the terminal in a case that the configuration signaling is not received,

an ACK skipping policy;

a NACK skipping strategy;

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

grouping configuration of network side equipment;

a transmission priority;

a serving cell to which the cell belongs;

the bandwidth part BWP to which it belongs.

It should be noted that, the device is a device to which the HARQ-ACK feedback method applied to the network side device is applied, and the implementation manner of the embodiment of the method is applicable to the device, so that the same technical effects can be achieved.

Optionally, as shown in fig. 7, the embodiment of the present application further provides a communication device, including a processor 701, a memory 702, and a program or an instruction stored in the memory 702 and capable of running on the processor 701, where, for example, the communication device 700 is a terminal, the program or the instruction is executed by the processor 701 to implement each process of the HARQ-ACK feedback method embodiment applied to the terminal, and achieve the same technical effects. When the communication device 700 is a network side device, the program or the instruction, when executed by the processor 701, implements each process of the embodiment of the HARQ-ACK feedback method applied to the network side device, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

Fig. 8 is a schematic diagram of a hardware structure of a terminal implementing various embodiments of the present application.

The terminal 800 includes, but is not limited to: radio frequency unit 801, network module 802, audio output unit 803, input unit 804, sensor 805, display unit 806, user input unit 807, interface unit 808, memory 809, and processor 810.

Those skilled in the art will appreciate that the terminal 800 may further include a power source (e.g., a battery) for powering the various components, and that the power source may be logically coupled to the processor 810 by a power management system for performing functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 8 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 804 may include a graphics processor (Graphics Processing Unit, GPU) 8041 and a microphone 8042, the graphics processor 8041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 807 includes a touch panel 8071 and other input devices 8072. Touch panel 8071, also referred to as a touch screen. The touch panel 8071 may include two parts, a touch detection device and a touch controller. Other input devices 8072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving downlink data from a network side device, the radio frequency unit 801 processes the downlink data with the processor 810; in addition, the uplink data is sent to the network side equipment. In general, the radio frequency unit 801 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.

The memory 809 may be used to store software programs or instructions and various data. The memory 809 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. In addition, the Memory 809 may include a high-speed random access Memory, and may also include a nonvolatile Memory, wherein the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable ROM (EPROM), an Electrically Erasable Programmable EPROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.

The processor 810 may include one or more processing units; alternatively, the processor 810 may integrate an application processor that primarily processes operating systems, user interfaces, and applications or instructions, etc., with a modem processor that primarily processes wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 810.

The processor 810 is configured to obtain a feedback strategy adopted by HARQ-ACK feedback; and carrying out HARQ-ACK feedback according to the feedback strategy.

The terminal introduces a personalized configuration method of the HARQ-ACK feedback strategy aiming at SPS Config, determines the corresponding HARQ-ACK feedback behavior during mixed configuration, and can effectively reduce SPS PDSCH HARQ-ACK feedback load.

Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 9, the network device 900 includes: an antenna 91, a radio frequency device 92, a baseband device 93. The antenna 91 is connected to a radio frequency device 92. In the uplink direction, the radio frequency device 92 receives information via the antenna 91, and transmits the received information to the baseband device 93 for processing. In the downlink direction, the baseband device 93 processes information to be transmitted, and transmits the processed information to the radio frequency device 92, and the radio frequency device 92 processes the received information and transmits the processed information through the antenna 91.

The above-described band processing means may be located in the baseband apparatus 93, and the method performed by the network-side device in the above embodiment may be implemented in the baseband apparatus 93, and the baseband apparatus 93 includes a processor 94 and a memory 95.

The baseband device 93 may, for example, comprise at least one baseband board on which a plurality of chips are disposed, as shown in fig. 9, where one chip, for example, a processor 94, is connected to the memory 95 to invoke a program in the memory 95 to perform the network device operations shown in the above method embodiment.

The baseband device 93 may also include a network interface 96 for interacting with the radio frequency device 92, such as a common public radio interface (common public radio interface, CPRI for short).

Specifically, the network side device of the embodiment of the present application further includes: instructions or programs stored in the memory 95 and executable on the processor 94, the processor 94 invokes the instructions or programs in the memory 95 to perform the methods performed by the modules shown in fig. 6 and achieve the same technical effects, and are not repeated here.

The embodiment of the application also provides a readable storage medium, on which a program or an instruction is stored, where the program or the instruction implements the HARQ-ACK feedback method applied to the terminal when being executed by the processor, or is applied to each process of the HARQ-ACK feedback method embodiment of the network side device, and the same technical effect can be achieved, so that repetition is avoided, and no redundant description is provided herein.

Wherein the processor is a processor in the communication device described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory RAM), a magnetic disk or an optical disk.

The embodiment of the application further provides a chip, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used for running a program or an instruction to realize the HARQ-ACK feedback method applied to the terminal, or each process of the HARQ-ACK feedback method embodiment applied to the network side device, and the same technical effect can be achieved, so that repetition is avoided, and no redundant description is provided herein.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.

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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. The HARQ-ACK feedback method is applied to a terminal and is characterized by comprising the following steps:

acquiring a feedback strategy adopted by HARQ-ACK feedback;

according to the feedback strategy, HARQ-ACK feedback is carried out;

wherein the HARQ-ACK corresponds to one or a group of scheduling configurations;

in the case where the one or a set of scheduling configurations is a semi-persistent scheduling, SPS, configuration, the feedback strategy comprises at least one of: an acknowledgement ACK skip policy; negative acknowledgement, NACK, skip strategy; HARQ-ACK bundling strategy; and, the HARQ-ACK bundling policy corresponds to a single HARQ-ACK bit for N SPS PDSCH in each period;

in the case where the one or a set of scheduling configurations is a dynamic scheduling configuration, the feedback policy includes at least one of: an ACK skipping policy; HARQ-ACK bundling strategy; and, the said HARQ-ACK binding strategy is that N PDSCH of dynamic scheduling correspond to single HARQ-ACK bit;

n is an integer greater than or equal to 1.

2. The method of claim 1, wherein the step of obtaining the feedback strategy employed by the HARQ-ACK feedback comprises:

receiving configuration signaling; the configuration signaling is used for configuring a feedback strategy adopted by HARQ-ACK feedback for the terminal.

3. The method of claim 1, wherein the feedback strategy further comprises at least one of:

a HARQ-ACK disabling policy;

non-load shedding strategies.

4. The method of claim 1, wherein the feedback strategy further comprises at least one of:

a HARQ-ACK disabling policy;

non-load shedding strategies.

5. The method of claim 1, wherein the feedback strategy employed for acquiring HARQ-ACK feedback comprises:

an ACK skipping policy;

a NACK skipping strategy;

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

6. The method of claim 2, wherein the scheduling configuration is grouped based on a first target item, the first target item comprising at least one of:

Grouping configuration of network side equipment;

a transmission priority;

a serving cell to which the cell belongs;

the bandwidth part BWP to which it belongs.

7. The method of claim 2, wherein the one or a set of scheduling configurations has a corresponding bundling identification if the feedback policy is a HARQ-ACK bundling policy.

8. The method of claim 2, wherein each set of scheduling configurations comprises a plurality of scheduling configuration sub-sets, each scheduling configuration sub-set having a corresponding binding identification, and wherein one or more scheduling configurations are included in the scheduling configuration sub-set.

9. The method of claim 1, wherein the performing HARQ-ACK feedback according to the feedback policy comprises:

10. The method of claim 9, wherein the performing HARQ-ACK feedback according to the feedback policy comprises:

11. The method of claim 9, wherein the performing HARQ-ACK feedback according to the feedback policy comprises:

Wherein the second target item comprises at least one of:

SPS configuration identification;

binding an identification;

SPS configuration group identification;

12. The method of claim 11, wherein the HARQ-ACK corresponding to the bundling identity is determined according to at least one of:

13. The method of claim 11, wherein the HARQ-ACK corresponding to the bundling identity is determined according to at least one of:

14. The method of claim 12 or 13, wherein the target transport block is a transport block of all SPS PDSCH occasions within N periods, the SPS PDSCH occasions corresponding to a first SPS configuration, the first SPS configuration corresponding to a first bundling identification.

15. The method of claim 9, wherein the target feedback strategy is: a predefined or preconfigured feedback strategy, or,

16. The method of claim 9, wherein the target feedback strategy includes the multiple feedback strategies, and wherein HARQ-ACK codebooks corresponding to each SPS configuration are generated according to each feedback strategy.

17. The method of claim 16, wherein the performing HARQ-ACK feedback according to the feedback policy comprises:

18. The method of claim 16, wherein the performing HARQ-ACK feedback according to the feedback policy comprises:

the other feedback strategies include at least one of:

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

19. The method of claim 1, wherein the performing HARQ-ACK feedback according to the feedback policy comprises:

20. The HARQ-ACK feedback method is applied to network side equipment and is characterized by comprising the following steps:

receiving HARQ-ACK information fed back by the terminal according to the feedback strategy;

N is an integer greater than or equal to 1.

21. The method of claim 20, wherein the feedback strategy further comprises at least one of:

a HARQ-ACK disabling policy;

non-load shedding strategies.

22. The method of claim 20, wherein the feedback strategy further comprises at least one of:

a HARQ-ACK disabling policy;

non-load shedding strategies.

23. The method as recited in claim 20, further comprising:

receiving HARQ-ACK information fed back by the terminal according to a default strategy under the condition that the terminal does not receive the configuration signaling; wherein the default policy includes at least one of:

an ACK skipping policy;

a NACK skipping strategy;

HARQ-ACK bundling strategy;

a HARQ-ACK disabling policy;

non-load shedding strategies.

24. The method of claim 20, wherein the scheduling configuration is grouped based on a first target item, the first target item comprising at least one of:

grouping configuration of network side equipment;

A transmission priority;

a serving cell to which the cell belongs;

the bandwidth part BWP to which it belongs.

25. The method of claim 20, wherein the one or the set of scheduling configurations has a corresponding bundling identification if the feedback policy is a HARQ-ACK bundling policy.

26. The method of claim 20, wherein each set of scheduling configurations comprises a plurality of scheduling configuration sub-sets, each scheduling configuration sub-set having a corresponding binding identification, and wherein one or more scheduling configurations are included in the scheduling configuration sub-set.

27. A HARQ-ACK feedback device, comprising:

the first feedback module is used for carrying out HARQ-ACK feedback according to the feedback strategy;

n is an integer greater than or equal to 1.

28. A HARQ-ACK feedback device, comprising:

the first feedback receiving module is used for receiving HARQ-ACK information fed back by the terminal according to the feedback strategy;

N is an integer greater than or equal to 1.

29. A communication device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor, implements the HARQ-ACK feedback method of any of claims 1 to 19, or the steps of the HARQ-ACK feedback method of any of claims 20 to 26.

30. A readable storage medium, wherein a program or instructions is stored on the readable storage medium, which when executed by a processor, implements the HARQ-ACK feedback method according to any of claims 1 to 19, or the steps of the HARQ-ACK feedback method according to any of claims 19 to 26.