WO2022028616A1

WO2022028616A1 - Codebook determination method and apparatus, and device and storage medium

Info

Publication number: WO2022028616A1
Application number: PCT/CN2021/111433
Authority: WO
Inventors: 陈杰; 卢有雄; 杨瑾; 贺海港
Original assignee: 中兴通讯股份有限公司
Priority date: 2020-08-07
Filing date: 2021-08-09
Publication date: 2022-02-10
Also published as: CN112039640A

Abstract

Disclosed are a codebook determination method and apparatus, and a device and a storage medium. The codebook determination method comprises: determining a physical sidelink feedback channel (PSFCH) time slot corresponding to each hybrid automatic repeat request (HARQ) feedback resource, and a physical sidelink shared channel (PSSCH) transmission occasion set corresponding to the PSFCH time slot; determining HARQ feedback information corresponding to each PSSCH transmission occasion in the PSSCH transmission occasion set; and determining a semi-static HARQ codebook on the basis of the HARQ feedback information.

Description

Codebook determination method, device, device and storage medium

technical field

The present application relates to the field of communication technologies, for example, to a codebook determination method, apparatus, device, and storage medium.

Background technique

The data sent by the transmitting user equipment (Transmitting User Equipment) Tx UE on the side link (Sidelink, SL) can be used to generate a hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) codebook, the HARQ codebook is report to the base station. According to the network side configuration, the HARQ codebook can be set as a semi-static codebook, or can be set as a dynamic codebook. How to generate a semi-static HARQ codebook in some cases is an urgent problem to be solved.

SUMMARY OF THE INVENTION

The present application provides a codebook determination method, apparatus, device and storage medium to solve the problem that the time slot format supported by NR is not suitable for HD-FDD terminals.

An embodiment of the present application provides a method for determining a codebook, and the method is applied to a first node, including:

Determine the physical side link feedback channel PSFCH time slot corresponding to each hybrid automatic repeat request (, HARQ) feedback resource and the physical side link shared channel PSSCH transmission opportunity set corresponding to the PSFCH time slot; determine the PSSCH transmission opportunity set in the set HARQ feedback information corresponding to each PSSCH transmission occasion; the semi-static HARQ codebook is determined based on the HARQ feedback information.

An embodiment of the present application provides an apparatus for determining a codebook. The apparatus is configured on a first node and includes:

The PSSCH transmission timing determination module is configured to determine the physical side link feedback channel PSFCH time slot corresponding to each hybrid automatic repeat request HARQ feedback resource and the physical side link shared channel PSSCH transmission timing set corresponding to the PSFCH time slot; HARQ feedback The information determination module is configured to determine HARQ feedback information corresponding to each PSSCH transmission opportunity in the PSSCH transmission opportunity set; the HARQ codebook determination module is configured to determine a semi-static HARQ codebook based on the HARQ feedback information.

The embodiment of the present application provides a device, including:

one or more processors; a memory configured to store one or more programs; when the one or more programs are executed by the one or more processors, cause the one or more processors to implement the The codebook determination method provided by the application embodiment.

An embodiment of the present application provides a storage medium, where the storage medium stores a computer program, and when the computer program is executed by a processor, the codebook determination method provided by the embodiment of the present application is implemented.

Description of drawings

Fig. 1 is a kind of schematic diagram of D2D communication;

2 is a schematic diagram of a side link communication resource indication;

Figure 3 is a schematic diagram of a sidelink resource configuration;

FIG. 4 is a schematic diagram corresponding to a sidelink HARQ feedback resource;

5 is a flowchart of a method for determining a codebook provided by an embodiment of the present application;

6 is a schematic structural diagram of a semi-static codebook determination method;

7 is a schematic diagram of repetition of PSSCH transmission timing provided by an embodiment of the present application;

8 is a schematic diagram of repetition of PSSCH transmission timing provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of repetition of PSSCH transmission timing provided by an embodiment of the present application;

Figure 10 is a schematic diagram of HARQ feedback in a sidelink multi-carrier scenario;

11 is a schematic diagram of a PSSCH transmission opportunity without repetition when multiple resource pools are configured;

12 is a schematic diagram of repeated PSSCH transmission opportunities when multiple resource pools are configured;

13 is a schematic structural diagram of an apparatus for determining a codebook provided by an embodiment of the present application;

FIG. 14 is a schematic structural diagram of a device provided by an embodiment of the present application.

detailed description

Hereinafter, the embodiments of the present application will be described with reference to the accompanying drawings.

The steps shown in the flowcharts of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that herein.

The technical solution of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (Wideband) Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (Long Term Evolution, LTE) system, LIE-A (Advanced Long Term Evolution, Advanced Long Term Evolution) system, general A mobile communication system (Universal Mobile Telecommunication System, UMTS), a fifth generation mobile communication technology (5th Generation wireless systems, 5G) system, etc., the embodiment of this application does not limit the communication system. In this application, the 5G system is used as an example for description.

The embodiments of the present application can be used in wireless networks of different standards. A radio access network may include different communication nodes in different systems. As shown in FIG. 1 , the wireless network system includes a base station (eNB/gNB) and a plurality of user equipments (UE1, UE2). Wireless communication is performed between the base station and multiple user equipments, and wireless communication is also performed between multiple user equipments.

In this embodiment of the present application, the base station may be a device capable of communicating with a user terminal. The base station can be any device with wireless transceiver function. Including but not limited to: base station NodeB, evolved NodeB (eNodeB), base station in 5G communication system, base station in future communication system, access node in WiFi system, wireless relay node, wireless backhaul node, etc. . The base station may also be a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN) scenario; the base station may also be a small cell, a transmission node (Transmission Receive Point, TRP), etc. limited.

In the embodiment of this application, the user terminal is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed on In the air (eg on airplanes, balloons and satellites, etc.). The user terminal may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal, an augmented reality (Augmented Reality, AR) terminal, an industrial control (industrial control) wireless terminals in ), wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety , wireless terminals in smart cities, wireless terminals in smart homes, and so on. The embodiments of the present application do not limit application scenarios. A user terminal may also sometimes be referred to as a terminal, access terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication device, UE proxy, or UE device, or the like. This embodiment of the present application does not limit the user terminal.

Compared with the previous communication system, the New Radio (NR) system has higher configuration flexibility and wider bandwidth range. Accordingly, higher requirements are placed on the capability of the terminal, which requires a higher cost. Previously higher cost production terminals. However, among the various scenarios supported by the NR system, not all scenarios require such high terminal capabilities, such as smart wearable devices, industrial sensors, etc. Therefore, low-configuration terminal device types are defined for such scenarios, such as smaller bandwidth, fewer antennas, Half Duplex-Frequency Division Duplexing (HD-FDD), relaxing UE processing time, The UE processing capability is relaxed, thereby reducing the production cost and complexity of the terminal. Such terminals may be referred to as low profile terminals, or NR Reduced Capability (NR RedCap) user terminals.

With the development of wireless communication technology and the increasing demand of users for communication, 5G has become the trend of future network development in order to meet the communication requirements of low latency, high reliability and high speed.

In the side link (Sidelink, SL) communication system, when there is a service to be transmitted between user equipments (UEs), the service data between the UEs does not pass through the network side, that is, does not pass through the cellular link between the UE and the base station. , but is directly transmitted by the data source UE to the target UE through the side link, as shown in Figure 1. This technology can lighten the burden of cellular networks, reduce battery power consumption of user equipment, and improve the robustness of network infrastructure, which can well meet the requirements of high data rate services and proximity services, and also supports no network coverage scenarios. Direct communication can meet special communication needs such as public safety.

In the 5G communication system, the smallest resource unit in the time domain is a symbol (Symbol), which consists of 12 long cyclic prefixes (ECP, Extend Cycle Prefix) or 14 consecutive symbols of normal cyclic prefixes (NCP, Normal Cycle Prefix) in the time domain One slot (Slot) of , or one or more consecutive symbols (less than or equal to 7 symbols) constitute a mini slot (Mini-Slot). The minimum resource unit in the frequency domain is the subcarrier, and the size of the subcarrier is a limited number of optional values (15kHZ, 30kHZ, 60kHZ, 120kHZ, 240kHZ), and 12 consecutive subcarriers form a frequency domain resource block (RB, Resource Block). ), RB is a resource unit of frequency domain resource configuration.

The same time-domain and frequency-domain resource units are also used as the basis when implementing side-link communication in a 5G communication system. A sidelink communication resource pool (sidelink resource pool) is formed by a group of time domain/frequency domain resource units. In the resource pool, UE performs sidelink communication according to the configured or preconfigured resources. The sidelink resource pool includes physical sidelink control channels. (Physical Sidelink Control Channel, PSCCH) resource, Physical Sidelink Shared Channel (Physical Sidelink Shared Channel, PSSCH) resource and Physical Sidelink Feedback Channel (Physical Sidelink Feedback Channel, PSFCH) resource.

In the NR Sidelink communication of the related art, the UE uses PSCCH resources to send Sidelink control information, and when using PSSCH resources to send Sidelink data, the signals sent on PSCCH resources or PSSCH resources must use cyclic prefix orthogonal frequency division multiplexing (Cycle Prefix Orthogonal Frequency Division Multiplexing, CP-OFDM) waveform. Correspondingly, the UE performing signal reception in the Sidelink monitors the resources in the Sidelink resource pool, and receives and processes the signal by receiving the CP-OFDM signal. The UE performs blind detection in the PSCCH resource pool to receive the side link control information (Sidelink Control Information). , SCI) information. When the SCI information is detected, the data information on the PSSCH resource is received according to the indication of the SCI information. The PSSCH is composed of sub-channels composed of multiple consecutive RBs in the frequency domain, as shown in FIG. 2 .

NR R16 sidelink supports the configuration of a sidelink carrier, and supports the configuration of a sidelink bandwidth part (Bandwidth Part, BWP) on the carrier, on which multiple resource pools can be configured and activated for the UE. For each sidelink resource pool, PSFCH resources can be configured. By configuring the PSFCH period N, the period N indicates that every N sidelink time slots in the resource pool corresponds to one PSFCH time slot, and the resource location of the PSFCH is predefined. A schematic diagram of a resource configuration is shown in FIG. 3 .

Based on these configurations and predefined information, the Tx UE can generate sidelink HARQ codebook information according to the PSSCH transmission timing associated with the PSFCH indicated by the base station, and then the Tx UE feeds back the sidelink HARQ codebook information to the base station on the cellular link. The generation method of the Sidelink HARQ codebook is similar to the generation method of the HARQ codebook of cellular downlink data, and supports semi-static codebook generation and dynamic codebook generation.

For the semi-static codebook, the base station will configure a set K1 of delays from PSFCH time slots to PUCCH time slots on the sidelink BWP. The set K1 consists of {K11, K12, ..., K1k, ... K1n}. Time slot position, according to the value of each element in the delay set K1, it is possible to find a corresponding PSFCH resource located in the resource pool, and then configure the bitmap information and PSFCH cycle information N according to the resource pool resource, and then find the resource located in the resource pool. N PSSCH transmission opportunities in the pool, so as to generate HARQ feedback information corresponding to each PSSCH transmission opportunity.

As shown in FIG. 4 , when the PSFCH period information N in the SL resource pool is 2, the corresponding relationship of HARQ generation when the delay is 2 is taken from the K1 set. However, when the time slot where SL8 is located belongs to multiple resource pools, the PSFCH slot on SL8 may correspond to N1 PSSCH transmission opportunities in resource pool 1, and may correspond to N2 PSSCH transmission opportunities in resource pool 2. At this time, the third generation The 3rd Generation Partnership Project (3GPP) protocol does not describe how to generate a HARQ codebook in this case. Secondly, when a PSSCH transmission opportunity belongs to multiple resource pools at the same time, how to generate a HARQ codebook for this PSSCH transmission opportunity It is also unclear. Finally, it is not clear how to generate the HARQ feedback codebook when multiple carriers are configured on the Sidelink.

In one embodiment, an embodiment of the present application provides a method for determining a codebook. As shown in FIG. 5 , the method for determining a codebook provided by an embodiment of the present application mainly includes steps S11 , S12 and S13 .

S11. Determine the physical side link feedback channel PSFCH time slot corresponding to each HARQ feedback resource of the HARQ request and the physical side link shared channel PSSCH transmission opportunity set corresponding to the PSFCH time slot.

S12. Determine HARQ feedback information corresponding to each PSSCH transmission opportunity in the PSSCH transmission opportunity set.

S13. Determine a semi-static HARQ codebook based on the HARQ feedback information.

A PSFCH slot refers to a slot including PSFCH resources. The HARQ feedback information is the HARQ feedback information corresponding to the PSSCH transmission timing between the UE and the UE, and the HARQ codebook is the codebook that the receiving UE needs to feed back to the base station.

Determine the PSFCH timeslot corresponding to each HARQ feedback resource, including: the base station will configure a set K1 of delays from PSFCH timeslots to PUCCH timeslots on the sidelink BWP. The set K1 consists of {K11, K12,..., K1k,...K1n } composition, for each time slot position of PUCCH, according to each element value in the delay set K1, it is possible to find a corresponding PSFCH resource in the resource pool.

Determining the PSSCH transmission opportunity set corresponding to the PSFCH time slot includes: according to the resource configuration bitmap information and PSFCH period information N of the resource pool, and then finding the PSSCH transmission opportunity set formed by N PSSCH transmission opportunities in the resource pool. The PSSCH transmission occasion set refers to a set including a plurality of PSSCH transmission occasions.

In one embodiment, the method further includes: receiving the side link SL carrier configured by the second node, the bandwidth portion BWP on the SL carrier, the resource pool on the SL BWP, the HARQ feedback delay set, and the cellular network link HARQ feedback resources.

In one embodiment, when the HARQ feedback resource is associated with multiple SL carriers, a corresponding semi-static HARQ codebook is independently generated on each SL carrier.

In one embodiment, there are PSFCH resources of one or more resource pools on the PSFCH timeslot.

In one embodiment, in the case that there are PSFCH resources of multiple resource pools on one of the PSFCH time slots, the PSFCH time slots correspond to multiple PSSCH transmission time slots in each resource pool.

In the case that there are PSFCH resources of multiple resource pools in one of the PSFCH timeslots, the PSFCH timeslots correspond to one or more PSSCH transmission opportunities in each resource pool.

In one embodiment, determining the HARQ feedback information corresponding to each PSSCH transmission occasion in the PSSCH transmission occasion set includes:

The PSSCH transmission opportunity corresponding to the PSFCH time slot is processed according to the first preprocessing method to obtain a first PSSCH transmission opportunity set; and HARQ feedback information corresponding to each PSSCH transmission opportunity in the first PSSCH transmission opportunity set is generated.

In this embodiment, the first set of PSSCH transmission opportunities refers to a set of PSSCH transmission opportunities obtained by processing all PSSCH transmission opportunities corresponding to all PSFCH time slots corresponding to the HARQ feedback resource according to the first preprocessing method. There are PSSCH transmission occasions with repeated time domain.

In one embodiment, at least one PSFCH time slot corresponds to multiple resource pools, and the PSSCH transmission opportunities corresponding to the PSFCH time slots in different resource pools have time domain duplication, and the PSSCH transmission opportunities corresponding to different PSFCH time slots do not have time domain duplication In the case of , determine the PSSCH transmission opportunity set corresponding to the PSFCH time slot, and determine the HARQ feedback information corresponding to each PSSCH transmission opportunity in the PSSCH transmission opportunity set, including:

The PSSCH transmission opportunity corresponding to the PSFCH time slot is processed according to the second preprocessing method to obtain a second PSSCH transmission opportunity set, wherein the second PSSCH transmission opportunity set includes one or more time-domain non-repetitive PSSCHs Transmission opportunity; generate HARQ feedback information corresponding to each PSSCH transmission opportunity in the second PSSCH transmission opportunity set.

In this embodiment, the second set of PSSCH transmission opportunities refers to a set formed after the PSSCH transmission opportunities with repeated time domain are processed by the second preprocessing method, and there is no PSSCH transmission opportunity with repeated time domain in the set.

In one embodiment, the PSSCH transmission opportunity corresponding to the PSFCH time slot is processed according to the second preprocessing mode to obtain a second PSSCH transmission opportunity set, including:

Determine the PSSCH transmission opportunity corresponding to each PSFCH time slot in each resource pool; sort the PSSCH transmission opportunity corresponding to each PSFCH time slot according to the time index; sort the PSSCH transmission opportunity corresponding to each PSFCH time slot according to The PSFCH timing indices are sorted or counted to obtain a second set of PSSCH transmission occasions, wherein the PSSCH transmission occasions repeated in the time domain are sorted or counted only once.

Sort the PSSCH transmission opportunities corresponding to each PSFCH time slot in each resource pool according to the time index; sort or count the sorted PSSCH transmission opportunities corresponding to each PSFCH time slot in each resource pool according to the PSFCH time sequence index, and obtain the PSFCH in each resource pool The sorted PSSCH transmission opportunities corresponding to the time slots; the sorted PSSCH transmission opportunities corresponding to the PSFCH time slots in each resource pool are sorted according to the resource pool index to obtain a second set of PSSCH transmission opportunities, wherein the PSSCH transmission opportunities repeated in the time domain Sort or count only once within the resource pool with the smallest resource pool index.

For each resource pool, the PSSCH transmission opportunities corresponding to each PSFCH time slot are sorted according to the time index; the sorted PSSCH transmission opportunities corresponding to each PSFCH time slot in each resource pool The sequenced PSSCH transmission opportunities corresponding to the PSFCH time slots in the resource pool; the sequenced PSSCH transmission opportunities corresponding to the PSFCH time slots in each resource pool are sorted according to the resource pool index to obtain a second PSSCH transmission opportunity set, wherein the time domain repeats PSSCH transmission occasions are ordered or counted only once within the resource pool with the largest resource pool index.

The PSSCH transmission opportunity corresponding to the PSFCH time slot is processed according to the first preprocessing method to obtain the first PSSCH transmission opportunity set; the HARQ feedback information corresponding to each PSSCH transmission opportunity in the first PSSCH transmission opportunity set is generated; The HARQ feedback information corresponding to each PSSCH transmission occasion is combined and processed according to the third processing manner, to obtain the HARQ feedback information corresponding to the PSSCH transmission occasions that are not repeated in the time domain.

In one embodiment, the HARQ feedback information corresponding to each PSSCH transmission opportunity is combined and processed according to the third processing mode, to obtain the HARQ feedback information corresponding to the time-domain non-repetitive PSSCH transmission opportunity, including:

The HARQ feedback information corresponding to the time-domain repeated PSSCH transmission occasions in each resource pool is merged into the HARQ feedback information corresponding to the PSSCH transmission occasion with the smallest resource pool index, and the HARQ feedback information corresponding to the time-domain non-repetitive PSSCH transmission occasions is obtained.

The HARQ feedback information corresponding to the PSSCH transmission occasions that are repeated in the time domain in each resource pool is merged into the HARQ feedback information corresponding to the PSSCH transmission occasion with the largest resource pool index, and the HARQ feedback information corresponding to the PSSCH transmission occasions that are not repeated in the time domain is obtained.

In one embodiment, the same HARQ feedback resource corresponds to multiple PSFCH time slots, and one PSFCH time slot corresponds to one resource pool, and the PSSCH transmission opportunities corresponding to the multiple PSFCH time slots in the respective resource pools are overlapped in the time domain In the case of , determine the PSSCH transmission opportunity set corresponding to the PSFCH time slot, and determine the HARQ feedback information corresponding to each PSSCH transmission opportunity in the PSSCH transmission opportunity set, including:

The PSSCH transmission opportunity corresponding to the PSFCH time slot is processed according to the fourth preprocessing method to obtain a second PSSCH transmission opportunity set, wherein the second PSSCH transmission opportunity set includes a plurality of time-domain non-repetitive PSSCH transmission opportunities ; Generate HARQ feedback information corresponding to each PSSCH transmission occasion in the second PSSCH transmission occasion set.

In one embodiment, the PSSCH transmission opportunity corresponding to each PSFCH time slot is processed according to the fourth preprocessing method to obtain a second PSSCH transmission opportunity set, including:

For each PSFCH time slot, the PSSCH transmission opportunities corresponding to the PSFCH time slot are sorted according to the time index; according to the PSFCH time sequence index, the PSSCH transmission opportunities sorted by the time index are sorted in turn; The PSSCH transmission occasions with the smallest PSFCH slot index are combined to obtain a second set of PSSCH transmission occasions.

For each PSFCH time slot, the PSSCH transmission opportunities corresponding to the PSFCH time slot are sorted according to the time index; according to the PSFCH time sequence index, the PSSCH transmission opportunities sorted by the time index are sorted in turn; The PSSCH transmission occasions with the largest PSFCH slot index are combined to obtain a second set of PSSCH transmission occasions.

For each PSFCH time slot, the PSSCH transmission opportunities corresponding to the PSFCH time slot are sorted according to the time index; according to the PSFCH time sequence index, the PSSCH transmission opportunities sorted by the time index are sorted in turn; the second PSSCH transmission occasion set is obtained, wherein , the PSSCH transmission occasions repeated in the time domain are sequenced or counted only once.

For each resource pool, determine the PSFCH time slots in the resource pool; determine the PSSCH transmission opportunities corresponding to each PSFCH time slot in the resource pool and sort them according to the time index; Timing index sorting or statistics; sorting the sorted PSSCH transmission opportunities corresponding to the PSFCH time slots in each resource pool according to the resource pool index to obtain a second set of PSSCH transmission opportunities, wherein the PSSCH transmission opportunities repeated in the time domain are only in the resource pool index Sort or count once within the smallest resource pool.

For each resource pool, determine the PSFCH time slots in the resource pool; determine the PSSCH transmission opportunities corresponding to each PSFCH time slot in the resource pool and sort them according to the time index; Timing index sorting or statistics; sorting the sorted PSSCH transmission opportunities corresponding to the PSFCH time slots in each resource pool according to the resource pool index to obtain a second set of PSSCH transmission opportunities, wherein the PSSCH transmission opportunities repeated in the time domain are only in the resource pool index The largest resource pool is sorted or counted once.

In one embodiment, one HARQ feedback resource corresponds to a plurality of the PSFCH time slots, and one PSFCH time slot corresponds to a resource pool, and the PSSCH transmission opportunities corresponding to the plurality of the PSFCH time slots in the respective resource pools exist in the time domain In the case of repetition, determine the PSSCH transmission occasion set corresponding to the PSFCH time slot, and determine the HARQ feedback information corresponding to each PSSCH transmission occasion in the PSSCH transmission occasion set, including:

The PSSCH transmission opportunity corresponding to the PSFCH time slot is processed according to the first preprocessing method to obtain the first PSSCH transmission opportunity set; the HARQ feedback information corresponding to each PSSCH transmission opportunity in the first PSSCH transmission opportunity set is generated; The HARQ feedback information corresponding to each PSSCH transmission occasion is combined and processed according to the fifth processing manner, to obtain the HARQ feedback information corresponding to the PSSCH transmission occasions that are not repeated in the time domain.

In one embodiment, the PSSCH transmission opportunity corresponding to the PSFCH time slot is processed according to the first preprocessing method to obtain a first PSSCH transmission opportunity set, including:

For each PSFCH time slot, determine the PSSCH transmission opportunity corresponding to the PSFCH time slot in each resource pool; for each resource pool, sort the PSSCH transmission opportunity corresponding to the PSFCH time slot according to the time index, and obtain the sorted sequence in each resource pool. order the PSSCH transmission timings in the resource pools according to the resource pool index to obtain the PSSCH transmission timings after the resource pools are sorted; sort the PSSCH transmission timings after the resource pools are sorted according to the PSFCH timing index to obtain the first PSSCH transmission timings. A set of PSSCH transmission occasions.

Determine all resource pools activated by the UE; for each resource pool, determine the PSFCH time slot corresponding to the HARQ feedback resource; for each PSFCH time slot, determine the PSSCH transmission opportunity corresponding to the PSFCH time slot in the resource pool; The PSSCH transmission opportunities corresponding to the PSFCH time slots are sorted according to the time index, and the sorted PSSCH transmission opportunities corresponding to the PSFCH time slots are obtained; the sorted PSSCH transmission opportunities corresponding to each PSFCH time slot are sorted according to the PSFCH time sequence index; PSFCH is obtained Sorted PSSCH transmission opportunities corresponding to the time slots; sort the sorted PSSCH transmission opportunities corresponding to the PSFCH time slots in each resource pool according to the resource pool index to obtain a first set of PSSCH transmission opportunities.

In one embodiment, the HARQ feedback information corresponding to each PSSCH transmission opportunity is combined and processed according to the fifth processing mode to obtain the HARQ feedback information corresponding to the time-domain non-repetitive PSSCH transmission opportunity, including:

The HARQ feedback information corresponding to the PSSCH transmission timing repeated in the time domain is combined with the HARQ feedback information corresponding to the PSSCH transmission timing with the smallest PSFCH timing index according to the PSFCH timing index to obtain the HARQ feedback information corresponding to the PSSCH transmission timing that is not repeated in the time domain.

The HARQ feedback information corresponding to the PSSCH transmission timing repeated in the time domain is combined with the HARQ feedback information corresponding to the PSSCH transmission timing with the largest PSFCH timing index according to the PSFCH timing index to obtain the HARQ feedback information corresponding to the PSSCH transmission timing that is not repeated in the time domain.

According to the PSFCH timing index, the HARQ feedback information corresponding to each PSSCH transmission opportunity in each PSFCH time slot is sequentially generated; wherein, only one HARQ feedback information is generated for the PSSCH transmission opportunity repeated in the time domain.

In one embodiment, one HARQ feedback resource corresponds to a plurality of the PSFCH time slots, and the PSSCH transmission opportunities corresponding to the PSFCH time slots in different resource pools have time domain repetition, and the PSSCH transmission opportunities corresponding to different PSFCH time slots exist in the time domain In the case of repetition, determine the PSSCH transmission occasion set corresponding to the PSFCH time slot, and determine the HARQ feedback information corresponding to each PSSCH transmission occasion in the PSSCH transmission occasion set, including:

According to the resource pool index, multiple PSFCH time slots corresponding to one HARQ feedback resource in each resource pool are determined; for each PSFCH time slot, the PSSCH transmission opportunities corresponding to the PSFCH time slot are sorted according to the time index; for each resource pool, Sort the sorted PSSCH transmission opportunities corresponding to all PSFCH time slots in the resource pool according to the PSFCH timing index; sort the sorted PSSCH transmission opportunities in each resource pool according to the resource pool index; obtain the second PSSCH transmission occasion set corresponding to the HARQ feedback resources wherein, the PSSCH transmission occasions repeated in the time domain are only sorted or counted once; and HARQ feedback information corresponding to each PSSCH transmission occasion in the second set of PSSCH transmission occasions is generated.

Determine multiple PSFCH time slots corresponding to one HARQ feedback resource in each resource pool; for each PSFCH time slot, sort the PSSCH transmission opportunities corresponding to the PSFCH time slots in each resource pool according to the time index, wherein the PSSCH repeated in the time domain The transmission opportunities are only sorted or counted once; the sorted PSSCH transmission opportunities corresponding to the PSFCH time slots are sorted according to the PSFCH time slot index to obtain the second set of PSSCH transmission opportunities corresponding to the HARQ feedback resources; wherein, the PSSCH transmission opportunities repeated in the time domain are only Sort or count once.

In one embodiment, the method further includes:

Arrange the HARQ codebooks on each SL carrier in the order of carrier indices; and send the arranged HARQ codebooks to the second node.

In one embodiment, in the case where the code block group (Code Block Group, CBG) is not enabled for SL data transmission and only one transport block (Transport Block, TB) is transmitted, the length of the HARQ feedback information is preset bit; when SL data transmission enables CBG and each TB is divided into M code blocks (Code Block, CB), the length of the HARQ feedback information is determined by the actual number of TBs transmitted by PSSCH and each The number of CBs in the CBG of the TB is determined.

In one embodiment, in the Sidelink communication system, Sidelink resources are used between UEs to transmit information. According to application scenarios and service types, Sidelink communication methods include Device to Device (D2D) Vehicle to Vehicle (V2V) communication, Vehicle to Road Side Unit (V2I), Vehicle to Pedestrian (V2P), etc.

In the sidelink communication, the network side configures the sidelink resource pool for the UE, or the sidelink resource pool is preconfigured by the system, and the UE uses the resources in the sidelink resource pool to carry the sidelink information. Sidelink resource pool includes PSCCH resource, PSSCH resource or optional configuration PSFCH resource.

If the sidelink communication is configured with PSFCH resources and sidelink HARQ feedback is enabled, then for each PSSCH transmission opportunity, there is a predefined PSFCH resource. After the UE sends data, it will receive it on the corresponding PSFCH resource. For the sidelink HARQ feedback information sent by the UE, when the transmitting UE finishes sorting out the HARQ feedback information corresponding to all PSSCHs, it will feed back the Sidelink HARQ information to the base station on the PUCCH resources or PUSCH resources configured by the base station.

The base station can configure multiple resource pools for the sidelink UE on a Sidelink BWP. Each resource pool can be independently configured with PSCCH, PSSCH and PSFCH resources. When the base station configures the UE to generate a semi-static codebook, the base station will configure the UE based on the SL BWP. A delay set K1, K1 consists of n elements {K11, K12,..., K1k,...K1n}, for a given cellular HARQ feedback time slot N, the sidelink sender UE determines the corresponding delays in the K1 set. Whether there is a PSFCH resource in the sidelink UE resource pool at the location, if there is, for each PSFCH resource, the transmitting UE needs to determine the PSSCH transmission opportunity corresponding to the PSFCH resource, and then generate the corresponding HARQ according to the data transmission situation of each PSSCH transmission opportunity Feedback information, as shown in Figure 6.

The time slot where the PSFCH resource determined by the Tx UE is located may belong to multiple resource pools. For example, the UE determines PSFCH1, PSFCH2, ..., where the time slot where the PSFCH1 is located belongs to both resource pool 1 and resource pool 2. In resource pool 1 The time slot where PSFCH1 is located corresponds to N1 PSSCH transmission opportunities, and the time slot where PSFCH1 is located in resource pool 2 corresponds to N2 PSSCH transmission opportunities, then this PSFCH1 time slot of the Tx UE corresponds to N1+N2 PSSCH transmission opportunities in total, usually The transmitting UE scheduled by the base station can only send one TB in one SL time slot, which means that if N1 PSSCH transmission occasions and N2 PSSCH transmission occasions are repeated, the UE can only transmit at most one PSSCH transmission opportunity in the time domain repeated PSSCH transmission occasions. The PSSCH is sent on one of the resource pools, and the PSSCH transmission opportunity on the other resource pool will not send data. In this case, for the PSSCH transmission opportunity, only 1 bit of HARQ information needs to be generated. For the PSSCH that is not sent, generally According to non-acknowledgement (Non-Acknowledgement, NACK) processing, this is redundant feedback information, which can be considered to be optimized to improve system performance. Therefore, for N1+N2 PSSCH transmission opportunities corresponding to the PSFCH1 time slot, if there are duplicate PSSCH transmission opportunities in different resource pools, the generated HARQ feedback information may be less than N1+N2 pieces.

Another situation is that the PSFCHs of different time slots correspond to different sets of PSSCH transmission occasions, and there is repetition of PSSCH transmission occasions between sets. Similarly, for the PSSCH transmission occasions that are repeated in the time domain, the UE can only use at most one of them. The PSSCH is sent on the resource pool, and no data is sent at the PSSCH transmission opportunity on another resource pool. It is also possible to consider optimizing the HARQ feedback information to improve the system performance.

The repetition of PSSCH transmission timing includes the following three cases.

In the first case, there are multiple resource pools in the time slot where the PSFCH is located, and the PSSCH transmission opportunities corresponding to the PSFCH time slot on these resource pools are repeated.

As shown in FIG. 7 , time slot 8 contains PSFCH resources, and this time slot belongs to both resource pool 1 and resource pool 2. The PSSCH transmission opportunities corresponding to this PSFCH time slot on resource pool 1 are time slot 1 and time slot 4. The PSSCH transmission opportunities corresponding to the PSFCH timeslot on resource pool 2 are timeslot 3 and timeslot 4. For timeslot 4, optimization can be considered. Assuming that SL CBG is not enabled, only 1 bit of HARQ feedback needs to be generated information.

When determining the PSSCH transmission opportunity corresponding to the PSFCH time slot on time slot 8, first determine the PSSCH transmission opportunity of all resource pools as {SL1, SL4, SL3, SL4}, and then remove the repeated transmission time slot, and according to the time index Sorting, the result is {SL1, SL3, SL4}, in this way, for the PSSCH transmission opportunity corresponding to the PSFCH on time slot 8, assuming that the SL CBG is not enabled, only the corresponding 3bit HARQ feedback information needs to be generated.

The second case: the corresponding PSSCH transmission opportunities in the respective corresponding resource pools where different PSFCH time slots corresponding to the same uplink feedback time slot are located are repeated.

As shown in Figure 8, time slot 8 belongs to resource pool 1, time slot 9 belongs to resource pool 2, and time slot 8 and time slot 9 both correspond to the same uplink (Uplink, UL) time slot for HARQ feedback, And time slot 1 and time slot 4 in resource pool 1 corresponding to time slot 8, time slot 3 and time slot 4 in resource pool 2 corresponding to time slot 9, assuming that SL CBG is not enabled, the same can be considered to repeat Slot 4 only generates 1 bit of HARQ feedback information.

For the PSFCH transmission time slot on SL8, generate HARQ feedback information corresponding to {SL1, SL4} 2 PSSCH transmission opportunities, and for the PSFCH transmission time slot on SL9, generate HARQ feedback corresponding to {SL3, SL4} 2 PSSCH transmission opportunities information, they all generate codebooks on the same UL time slot. At this time, it can be observed that HARQ feedback information is repeatedly generated for time slot 4. It can be considered that the HARQ on time slot 4 corresponding to the PSFCH transmission time slot on SL9 is used. The feedback information is combined with the HARQ feedback information on time slot 4 corresponding to the PSFCH transmission time slot on SL8. For example, for time slot 4, the HARQ feedback information is only filled in the position of time slot 4 corresponding to time slot 8.

The third case: the combination of the first case and the second case.

This most complicated scenario is shown in Figure 9. For example, time slot 8 belongs to resource pool 1 and resource pool 2. The PSSCH transmission timing corresponding to resource pool 1 is {SL1, SL2}, and the PSSCH transmission timing corresponding to resource pool 2 is {SL1, SL4}, time slot 9 belongs to resource pool 3, and the PSSCH transmission timing corresponding to resource pool 3 is {SL3, SL4}. It can be considered to optimize the HARQ feedback information in the first case (case1) first. In this case (case2), the feedback information is optimized.

The above process describes the semi-static codebook generation process when one communication carrier is configured for the SL. When multiple communication carriers are allowed to be configured on the SL, for a determined HARQ resource feedback time slot of a cellular uplink, firstly for each SL carrier according to the following steps: The above steps independently generate the HARQ codebook on each carrier, and then combine the HARQ codebook information on each carrier according to the carrier index, as shown in FIG. 10 .

The repeated PSSCH transmission opportunity mentioned in this application refers to the simultaneous existence of PSSCH resources of multiple resource pools on one PSSCH transmission opportunity, otherwise, it is called a non-repetitive PSSCH transmission opportunity.

Embodiments of non-repetitive PSSCH transmission occasions when multiple resource pools are configured:

Example 1

For a configured SL carrier and an SL BWP on the carrier, the base station configures and activates resource pool 1 and resource pool 2. For resource pool 1, the PSFCH resource period is 2, and for resource pool 2, the PSFCH resource period is also 2. For a PUCCH resource at time n, the base station will configure a delay set K1. For an element K1k in the K1 set, The time slot corresponding to n-K1k belongs to both resource pool 1 and resource pool 2, wherein time slot n-K1k corresponds to PSSCH transmission timing on SL1 and SL3 on resource pool 1, and time slot n-K1k corresponds to resource pool 2 PSSCH transmission timing on SL2 and SL4, then all PSSCH transmission time slots corresponding to time slot n-K1k are SL1, SL2, SL3, SL4, a total of four non-repetitive PSSCH transmission time slots, as shown in Figure 11. For the PSSCH transmission time corresponding to time slot n-K1k, the transmitting UE will generate corresponding 4 groups of HARQ feedback information. If CBG is not enabled, each group of HARQ feedback information is 1 bit, and a total of 4 bits of HARQ feedback information is generated. If CBG is enabled, And each TB is divided into M CBs, then each group of HARQ feedback information is Mbit, and a total of 4*Mbit HARQ feedback information is generated.

Embodiment of the first case where there are repeated PSSCH transmission occasions when multiple resource pools are configured:

For a configured SL carrier and an SL BWP on the carrier, the base station configures and activates resource pool 1 and resource pool 2. For resource pool 1, the PSFCH resource period is 4, and for resource pool 2, the PSFCH resource period is also 4. For a PUCCH resource at time n, the base station will configure a delay set K1. For an element K1k in the K1 set, The time slot corresponding to n-K1k belongs to both resource pool 1 and resource pool 2, in which time slot n-K1k corresponds to the PSSCH transmission timing on {SL1, SL3, SL4, SL6} on resource pool 1, and time slot n- K1k corresponds to the PSSCH transmission timing on {SL2, SL4, SL5, SL7} in resource pool 2, then all PSSCH transmission time slots corresponding to time slot n-K1k are {SL1, SL3, SL4, SL6, SL2, SL4, SL5, SL7} has a total of eight PSSCH transmission time slots.

Example 2

By combining the repeated PSSCH transmission time slots in the time domain and arranging them according to time, a total of seven non-repetitive PSSCH transmission opportunities of {SL1, SL2, SL3, SL4, SL5, SL6, SL7} can be obtained. For the PSSCH transmission time corresponding to time slot n-K1k, the transmitting UE will generate corresponding 7 groups of HARQ feedback information. If CBG is not enabled, each group of HARQ feedback information is 1 bit, and a total of 7 bits of HARQ feedback information are generated; if CBG is enabled, And each TB is divided into M CBs, then each group of HARQ feedback information is Mbit, and a total of 7*Mbit HARQ feedback information is generated.

Example 3

The repeated PSSCH transmission time slots in the time domain are combined forward according to the resource pool index, and a total of seven non-repetitive PSSCH transmission opportunities of {SL1, SL3, SL4, SL6, SL2, SL5, SL7} can be obtained. For the PSSCH transmission time corresponding to time slot n-K1k, the transmitting UE will generate corresponding 7 groups of HARQ feedback information. If CBG is not enabled, each group of HARQ feedback information is 1 bit, and a total of 7 bits of HARQ feedback information are generated; if CBG is enabled, And each TB is divided into M CBs, then each group of HARQ feedback information is Mbit, and a total of 7*Mbit HARQ feedback information is generated.

Example 4

According to the resource pool index, the HARQ feedback information is generated for the transmission occasion sets corresponding to the time slots n-K1k respectively, that is, four groups of HARQ feedback information are generated for the PSSCH transmission set {SL1, SL3, SL4, SL6} of the resource pool 1, and the HARQ feedback information is generated for the resource pool 1 The PSSCH transmission set of 2 {SL2, SL4, SL5, SL7} generates 4 sets of HARQ feedback information, and then the group of HARQ feedback information corresponding to SL4 in the PSSCH transmission set in resource pool 2 is merged into the PSSCH transmission set in resource pool 1. in the group of HARQ feedback information corresponding to SL4. That is, if there is data transmission on SL4 and it is received correctly, then ACK information is generated, otherwise, NACK information is generated. The 7 sets of HARQ feedback information generated at this time correspond to {SL1, SL3, SL4, SL6, SL2, SL5, SL7} 7 non-repetitive PSSCH transmission opportunities.

Example 5

The repeated PSSCH transmission time slots in the time domain are combined backwards according to the resource pool index, and a total of seven non-repetitive PSSCH transmission opportunities {SL1, SL3, SL6, SL2, SL4, SL5, SL7} can be obtained. For the PSSCH transmission time corresponding to time slot n-K1k, the transmitting UE will generate corresponding 7 groups of HARQ feedback information. If CBG is not enabled, each group of HARQ feedback information is 1 bit, and a total of 7 bits of HARQ feedback information are generated; if CBG is enabled, And each TB is divided into M CBs, then each group of HARQ feedback information is Mbit, and a total of 7*Mbit HARQ feedback information is generated.

Example 6

According to the resource pool index, the HARQ feedback information is generated for the transmission occasion sets corresponding to the time slots n-K1k respectively, that is, four groups of HARQ feedback information are generated for the PSSCH transmission set {SL1, SL3, SL4, SL6} of the resource pool 1, and the HARQ feedback information is generated for the resource pool 1 The PSSCH transmission set of 2 {SL2, SL4, SL5, SL7} generates 4 sets of HARQ feedback information, and then the group of HARQ feedback information corresponding to SL4 in the PSSCH transmission set in resource pool 1 is merged into the PSSCH transmission set in resource pool 2. in the group of HARQ feedback information corresponding to SL4. That is, if there is data transmission on SL4 and it is received correctly, then ACK information is generated, otherwise, NACK information is generated. The 7 groups of HARQ feedback information generated at this time correspond to {SL1, SL3, SL6, SL2, SL4, SL5, SL7} 7 non-repetitive PSSCH transmission opportunities.

The embodiment of the second case where there are repeated PSSCH transmission occasions when multiple resource pools are configured:

For a configured SL carrier and an SL BWP on the carrier, the base station configures and activates resource pool 1 and resource pool 2. For resource pool 1, the PSFCH resource period is 4, and for resource pool 2, the PSFCH resource period is also 4. For a PUCCH resource at time n, the base station will configure a delay set K1. For an element K1k in the K1 set, The time slot corresponding to n-K1k belongs to resource pool 1, which corresponds to the four PSSCH transmission opportunities on {SL1, SL3, SL4, SL6} on resource pool 1. For another element K1m in the K1 set, the corresponding time slot of n-K1m The time slot belongs to resource pool 2, and the resource pool 2 corresponds to four PSSCH transmission opportunities on {SL2, SL4, SL5, SL7}, as shown in FIG. 12 .

Example 7

By combining the repeated PSSCH transmission time slots in the time domain and arranging them according to time, a total of seven non-repetitive PSSCH transmission opportunities of {SL1, SL2, SL3, SL4, SL5, SL6, SL7} can be obtained. The UE at the transmitting end generates a total of 7 sets of HARQ feedback information corresponding to the PSSCH transmission opportunities corresponding to time slot n-K1k and time slot n-K1m. If CBG is not enabled, each set of HARQ feedback information is 1 bit, and a total of 7 bits of HARQ feedback information are generated information; if CBG is enabled, and each TB is divided into M CBs, then each group of HARQ feedback information is Mbit, and a total of 7*M bits of HARQ feedback information is generated.

Example 8

The PSSCH transmission time slots repeated in the time domain are combined forward according to the resource pool index or according to the time index of the elements in the delay set K1, and a total of seven non-linear Repeated PSSCH transmission occasions. For the PSSCH transmission times corresponding to time slot n-K1k and time slot n-K1m, the transmitting UE will generate corresponding 7 groups of HARQ feedback information. If CBG is not enabled, each group of HARQ feedback information is 1 bit, and a total of 7 bits of HARQ feedback information are generated. ; If CBG is enabled, and each TB is divided into M CBs, then each group of HARQ feedback information is Mbit, and a total of 7*Mbit HARQ feedback information is generated.

Example 9

According to the resource pool index or according to the time index of the elements in the delay set K1, the HARQ feedback information is respectively generated for the transmission opportunity sets corresponding to the time slot n-K1k and the time slot n-K1m, that is, for the resource where the time slot n-K1k is located. The PSSCH transmission set {SL1, SL3, SL4, SL6} of pool 1 generates 4 sets of HARQ feedback information, and generates 4 sets of HARQ for the PSSCH transmission set {SL2, SL4, SL5, SL7} of resource pool 2 where time slot n-K1m is located Feedback information, and then merge the group of HARQ feedback information corresponding to SL4 in the PSSCH transmission set in the resource pool 2 where the time slot n-K1m is located into the corresponding SL4 in the PSSCH transmission set in the resource pool 1 where the time slot n-K1k is located. in that group of HARQ feedback information. That is, if there is data transmission on SL4 and it is received correctly, then ACK information is generated, otherwise, NACK information is generated. The 7 sets of HARQ feedback information generated at this time correspond to {SL1, SL3, SL4, SL6, SL2, SL5, SL7} 7 non-repetitive PSSCH transmission opportunities.

Example 10

The repeated PSSCH transmission time slots are merged backward according to the resource pool index or the time index of the elements in the delay set K1, and a total of seven non-repetitive PSSCH can be obtained {SL1, SL3, SL6, SL2, SL4, SL5, SL7} transmission timing. For the PSSCH transmission times corresponding to time slot n-K1k and time slot n-K1m, the transmitting UE will generate corresponding 7 groups of HARQ feedback information. If CBG is not enabled, each group of HARQ feedback information is 1 bit, and a total of 7 bits of HARQ feedback information are generated. ; If CBG is enabled, and each TB is divided into M CBs, then each group of HARQ feedback information is Mbit, and a total of 7*Mbit HARQ feedback information is generated.

Example 11

According to the resource pool index or according to the time index of the elements in the delay set K1, the HARQ feedback information is respectively generated for the transmission opportunity sets corresponding to the time slot n-K1k and the time slot n-K1m, that is, for the resource where the time slot n-K1k is located. The PSSCH transmission set {SL1, SL3, SL4, SL6} of pool 1 generates 4 sets of HARQ feedback information, and generates 4 sets of HARQ for the PSSCH transmission set {SL2, SL4, SL5, SL7} of resource pool 2 where time slot n-K1m is located Feedback information, and then combine the group of HARQ feedback information corresponding to SL4 in the PSSCH transmission set in the resource pool 1 where the time slot n-K1k is located into the corresponding SL4 in the PSSCH transmission set in the resource pool 2 where the time slot n-K1m is located. in that group of HARQ feedback information. That is, if there is data transmission on SL4 and it is received correctly, then ACK information is generated, otherwise, NACK information is generated. The 7 groups of HARQ feedback information generated at this time correspond to {SL1, SL3, SL6, SL2, SL4, SL5, SL7} 7 non-repetitive PSSCH transmission opportunities.

Example 12

First, the non-repetitive PSSCH transmission opportunities are arranged according to the time index, and {SL1, SL2, SL3, SL5, SL6, SL7} can be obtained, and then the repeated PSSCH transmission opportunities SL4 are arranged before the non-repetitive PSSCH transmission opportunities, and { SL4, SL1, SL2, SL3, SL5, SL6, SL7}, and then generate corresponding HARQ feedback information for the final PSSCH transmission opportunity.

Example 13

According to the PSFCH slot index, the corresponding HARQ feedback information 1 is generated for the non-repetitive PSSCH transmission opportunity corresponding to each PSFCH slot, and then all the repeated PSSCH transmission opportunities are combined and arranged according to the PSSCH slot index to generate the corresponding HARQ Feedback information 2, and then arrange the HARQ feedback information 2 before the HARQ feedback information 1 to obtain the final HARQ feedback information.

Example 14

First, the non-repetitive PSSCH transmission opportunities are arranged according to the time index, and {SL1, SL2, SL3, SL5, SL6, SL7} can be obtained, and then the repeated PSSCH transmission opportunities SL4 are arranged after the non-repetitive PSSCH transmission opportunities, and { SL1, SL2, SL3, SL5, SL6, SL7, SL4}, and then generate corresponding HARQ feedback information for the final PSSCH transmission opportunity.

Example 15

According to the PSFCH slot index, the corresponding HARQ feedback information 1 is generated for the non-repetitive PSSCH transmission opportunity corresponding to each PSFCH slot, and then all the repeated PSSCH transmission opportunities are combined and arranged according to the PSSCH slot index to generate the corresponding HARQ Feedback information 2, and then arrange the HARQ feedback information 2 behind the HARQ feedback information 1 to obtain the final HARQ feedback information.

Example 16

For sidelink communication, if M carriers are configured, then for a HARQ feedback resource at time n, the HARQ feedback codebook is independently generated for each carrier, and then the HARQ codebooks corresponding to each carrier are combined together according to the carrier index.

The above embodiments can be used in any combination. For the third case where there are repeated PSSCH transmission occasions when multiple resource pools are configured, it may be a combination of any of the above embodiments, which will not be repeated in this embodiment.

In one embodiment, an embodiment of the present application provides an apparatus for determining a codebook. As shown in FIG. 13 , the apparatus for determining a codebook provided by an embodiment of the present application mainly includes a PSSCH transmission timing determination module 141 , a HARQ feedback information determination module 142 and HARQ codebook determination module 143 .

The PSSCH transmission timing determination module 141 is configured to determine the physical side link feedback channel PSFCH time slot corresponding to each hybrid automatic repeat request HARQ feedback resource and the physical side link shared channel PSSCH transmission opportunity set corresponding to the PSFCH time slot; HARQ The feedback information determination module 142 is configured to determine HARQ feedback information corresponding to each PSSCH transmission opportunity in the PSSCH transmission opportunity set; the HARQ codebook determination module 143 is configured to determine a semi-static HARQ codebook based on the HARQ feedback information .

In one embodiment, the apparatus further includes: receiving the side link SL carrier configured by the second node, the bandwidth part BWP on the SL carrier, the resource pool on the SL BWP, the HARQ feedback delay set and the cellular network link HARQ feedback resources.

In this embodiment, the first PSSCH transmission occasion set refers to the PSSCH transmission occasions corresponding to the PSFCH time slots, and the PSSCH transmission occasions that are repeated in the time domain in the set are not combined.

In this embodiment, the second PSSCH transmission occasion set refers to a set formed by combining the PSSCH transmission occasions repeated in the time domain after combining.

For each PSFCH time slot, determine the PSSCH transmission opportunity corresponding to the PSFCH time slot in each resource pool; for each resource pool, sort the PSSCH transmission opportunity corresponding to the PSFCH time slot according to the time index, and obtain the sorted sequence in each resource pool. The PSSCH transmission timings after sorting in each resource pool are sorted according to the resource pool index to obtain the PSSCH transmission timings sorted by the resource pools; A set of PSSCH transmission occasions.

The HARQ feedback information corresponding to the PSSCH transmission opportunity with repeated time domain is combined with the HARQ feedback information corresponding to the PSSCH transmission opportunity with the smallest PSFCH timing index according to the PSFCH timing index to obtain the HARQ feedback information corresponding to the PSSCH transmission opportunity that is not repeated in the time domain.

The HARQ feedback information corresponding to the PSSCH transmission opportunity with repeated time domain is combined with the HARQ feedback information corresponding to the PSSCH transmission opportunity with the largest PSFCH timing index according to the PSFCH timing index to obtain the HARQ feedback information corresponding to the PSSCH transmission opportunity that is not repeated in the time domain.

In one embodiment, the HARQ feedback information corresponding to each PSSCH transmission opportunity is combined and processed according to the fifth processing mode, to obtain the HARQ feedback information corresponding to the time-domain non-repetitive PSSCH transmission opportunity, including:

According to the resource pool index, multiple PSFCH time slots corresponding to one HARQ feedback resource in each resource pool are determined; for each PSFCH time slot, the PSSCH transmission opportunities corresponding to the PSFCH time slot are sorted according to the time index; for each resource pool, Sort the sorted PSSCH transmission opportunities corresponding to all PSFCH time slots in the resource pool according to the PSFCH timing index; sort the sorted PSSCH transmission opportunities in each resource pool according to the resource pool index; obtain the second PSSCH transmission occasion set corresponding to the HARQ feedback resource wherein, the PSSCH transmission occasions repeated in the time domain are only sorted or counted once; and HARQ feedback information corresponding to each PSSCH transmission occasion in the second set of PSSCH transmission occasions is generated.

In one embodiment, the apparatus further comprises:

In one embodiment, in the case where CBG is not enabled for SL data transmission and only 1 TB is transmitted, the length of the HARQ feedback information is a preset bit; when CBG is enabled for SL data transmission and each TB is divided into In the case of M CBs, the length of the HARQ feedback information is determined by the actual number of TBs transmitted by the PSSCH and the number of CBs in the CBG of each TB.

The codebook determination device provided in this embodiment can execute the codebook determination method provided by any embodiment of the present application, and has corresponding functional modules and effects for executing the method. For technical details not described in detail in this embodiment, reference may be made to the codebook determination method provided by any embodiment of this application.

In the embodiment of the above codebook determination device, the included units and modules are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be realized; in addition, the names of the functional units It is only for the convenience of distinguishing from each other, and is not used to limit the protection scope of the present application.

An embodiment of the present application further provides a device. FIG. 14 is a schematic structural diagram of a device provided by an embodiment of the present application. As shown in FIG. 14 , the device includes a processor 151 , a memory 152 , an input device 153 , an output device 154 and Communication device 155; the number of processors 151 in the device can be one or more, and one processor 151 is taken as an example in FIG. For connection in other ways, in FIG. 14, the connection by bus is taken as an example.

The memory 152, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules. The processor 151 executes various functional applications and data processing of the device by running the software programs, instructions, and modules stored in the memory 152 , that is, implements any method provided by the embodiments of the present application.

The memory 152 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the device, and the like. Additionally, memory 152 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 non-volatile solid state storage device. In some examples, memory 152 may include memory located remotely from processor 151, which may be connected to the device through a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

The input device 153 may be used to receive input numerical or character information, and generate key signal input related to user settings and function control of the device. The output device 154 may include a display device such as a display screen.

Communication device 155 may include a receiver and a transmitter. The communication device 155 is configured to transmit and receive information according to the control of the processor 151 .

In an exemplary implementation, the embodiments of the present application further provide a storage medium containing computer-executable instructions, where the computer-executable instructions are used to execute a codebook determination method when executed by a computer processor, so The method described above is applied to the first node, including:

Determine the physical side link feedback channel PSFCH time slot corresponding to each hybrid automatic repeat request HARQ feedback resource and the physical side link shared channel PSSCH transmission opportunity set corresponding to the PSFCH time slot; determine each PSSCH in the PSSCH transmission opportunity set HARQ feedback information corresponding to the transmission occasion; a semi-static HARQ codebook is determined based on the HARQ feedback information.

A storage medium containing computer-executable instructions provided by an embodiment of the present application, the computer-executable instructions of the computer-executable instructions are not limited to the above-mentioned method operations, and can also execute the relevant codebook determination methods provided by any embodiment of the present application. operate.

Through the above description of the embodiments, the present application can be implemented by software and necessary general-purpose hardware, and can also be implemented by hardware. The technical solution of the present application can be embodied in the form of a software product in essence, and the computer software product can be stored in a computer-readable storage medium, such as a floppy disk of a computer, a read-only memory (Read-Only Memory, ROM), a random access Memory (Random Access Memory, RAM), flash memory (FLASH), hard disk or optical disk, etc., including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the various embodiments of the present application. Methods.

The term user terminal covers any suitable type of wireless user equipment such as a mobile telephone, portable data processing device, portable web browser or vehicle mounted mobile station.

In general, the various embodiments of the present application may be implemented in hardware or special purpose circuits, software, logic, or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor or other computing device, although the application is not limited thereto.

Embodiments of the present application may be implemented by the execution of computer program instructions by a data processor of a mobile device, eg in a processor entity, or by hardware, or by a combination of software and hardware. Computer program instructions may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or written in any combination of one or more programming languages source or object code.

The block diagrams of any logic flow in the figures of the present application may represent program steps, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program steps and logic circuits, modules and functions. Computer programs can be stored on memory. The memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as but not limited to read only memory (ROM), random access memory (RAM), optical memory devices and systems (Digital Versatile Discs). (Digital Video Disc, DVD) or compact disc (Compact Disk, CD)), etc. Computer-readable media may include non-transitory storage media. The data processor can be of any type suitable for the local technical environment, such as, but not limited to, a general purpose computer, a special purpose computer, a microprocessor, a digital signal processor (Digital Signal Processing, DSP), an application specific integrated circuit (ASIC) ), programmable logic devices (Field-Programmable Gate Array, FPGA) and processors based on multi-core processor architecture.

Claims

A codebook determination method, applied to a first node, comprising:

determining a physical side link feedback channel PSFCH time slot corresponding to each hybrid automatic repeat request HARQ feedback resource and a physical side link shared channel PSSCH transmission opportunity set corresponding to the PSFCH time slot;

determining the HARQ feedback information corresponding to each PSSCH transmission opportunity in the PSSCH transmission opportunity set;

A semi-static HARQ codebook is determined based on the HARQ feedback information.
The method of claim 1, further comprising:

Receive the side link SL carrier configured by the second node, the bandwidth part BWP on the SL carrier, the resource pool on the SL BWP, the HARQ feedback delay set, and the HARQ feedback resources on the cellular network link.
The method according to claim 1, wherein in the case that the HARQ feedback resource is associated with multiple SL carriers, a corresponding semi-static HARQ codebook is independently generated on each SL carrier.
The method of claim 1, wherein the PSFCH resources of at least one resource pool exist on the PSFCH timeslot.
The method according to claim 1, wherein, in the case that there are PSFCH resources of multiple resource pools in one PSFCH time slot, the one PSFCH time slot corresponds to at least one PSSCH transmission opportunity in each resource pool.
The method according to claim 1, wherein the determining the HARQ feedback information corresponding to each PSSCH transmission occasion in the PSSCH transmission occasion set comprises:

processing the PSSCH transmission opportunities corresponding to the PSFCH timeslots according to the first preprocessing mode to obtain a first set of PSSCH transmission opportunities;

Generate HARQ feedback information corresponding to each PSSCH transmission occasion in the first PSSCH transmission occasion set.
The method according to claim 1, wherein at least one PSFCH time slot corresponds to multiple resource pools, and the PSSCH transmission opportunities corresponding to the PSFCH time slots in different resource pools have time domain repetition, and the PSSCH corresponding to different PSFCH time slots In the case where there is no time domain repetition in the transmission opportunity, the determining the PSSCH transmission opportunity set corresponding to the PSFCH time slot, and determining the HARQ feedback information corresponding to each PSSCH transmission opportunity in the PSSCH transmission opportunity set, including:

The PSSCH transmission opportunity corresponding to the PSFCH time slot is processed according to the second preprocessing method to obtain a second PSSCH transmission opportunity set, wherein the second PSSCH transmission opportunity set includes at least one time domain non-repetitive PSSCH transmission opportunity ;

Generate HARQ feedback information corresponding to each PSSCH transmission occasion in the second PSSCH transmission occasion set.
The method according to claim 7, wherein the PSSCH transmission opportunity corresponding to the PSFCH time slot is processed according to a second preprocessing method to obtain a second PSSCH transmission opportunity set, comprising:

Determine the PSSCH transmission opportunity corresponding to each PSFCH time slot in each resource pool;

Sorting the PSSCH transmission opportunities corresponding to each PSFCH time slot according to the time index;

Sort or count the sorted PSSCH transmission opportunities corresponding to each PSFCH time slot according to the PSFCH timing index to obtain the second set of PSSCH transmission opportunities, wherein the PSSCH transmission opportunities repeated in the time domain are only sorted or counted once.
The method according to claim 7, wherein the PSSCH transmission opportunity corresponding to the PSFCH time slot is processed according to a second preprocessing method to obtain a second PSSCH transmission opportunity set, comprising:

Sort the PSSCH transmission opportunities corresponding to each PSFCH time slot in each resource pool according to the time index;

Sort or count the sorted PSSCH transmission opportunities corresponding to each PSFCH time slot in each resource pool according to the PSFCH sequence index, to obtain the sorted PSSCH transmission opportunities corresponding to each PSFCH time slot in each resource pool;

Sorting the sorted PSSCH transmission opportunities corresponding to the PSFCH time slots in each resource pool according to the resource pool index to obtain the second set of PSSCH transmission opportunities, wherein the PSSCH transmission opportunities repeated in the time domain are only in the resource pool with the smallest resource pool index Sort or count once.
The method according to claim 7, wherein the PSSCH transmission opportunity corresponding to the PSFCH time slot is processed according to a second preprocessing method to obtain a second PSSCH transmission opportunity set, comprising:

For each resource pool, the PSSCH transmission opportunities corresponding to each PSFCH time slot are sorted according to the time index;

Sort or count the sorted PSSCH transmission opportunities corresponding to each PSFCH time slot in each resource pool according to the PSFCH sequence index, to obtain the sorted PSSCH transmission opportunities corresponding to each PSFCH time slot in each resource pool;

Sorting the sorted PSSCH transmission opportunities corresponding to the PSFCH time slots in each resource pool according to the resource pool index to obtain the second set of PSSCH transmission opportunities, wherein the PSSCH transmission opportunities repeated in the time domain are only in the resource pool with the largest resource pool index Sort or count once.
The method according to claim 1, wherein at least one PSFCH time slot corresponds to multiple resource pools, and the PSSCH transmission opportunities corresponding to the PSFCH time slots in different resource pools have time domain repetition, and the PSSCH corresponding to different PSFCH time slots In the case where there is no time domain repetition in the transmission occasions, the determining of the HARQ feedback information corresponding to each PSSCH transmission occasion in the PSSCH transmission occasion set includes:

processing the PSSCH transmission opportunities corresponding to the PSFCH timeslots according to the first preprocessing mode to obtain a first set of PSSCH transmission opportunities;

generating HARQ feedback information corresponding to each PSSCH transmission opportunity in the first PSSCH transmission opportunity set;

The HARQ feedback information corresponding to each PSSCH transmission occasion is combined and processed according to the third processing manner, so as to obtain the HARQ feedback information corresponding to the PSSCH transmission occasions that are not repeated in the time domain.
The method according to claim 11, wherein the HARQ feedback information corresponding to each PSSCH transmission opportunity is combined and processed according to a third processing method to obtain the HARQ feedback information corresponding to the PSSCH transmission opportunity that is not repeated in the time domain, include:

The HARQ feedback information corresponding to the time-domain repeated PSSCH transmission occasions in each resource pool is merged into the HARQ feedback information corresponding to the PSSCH transmission occasions with the smallest resource pool index to obtain the HARQ feedback information corresponding to the time-domain non-repetitive PSSCH transmission occasions.
The method according to claim 11, wherein the HARQ feedback information corresponding to each PSSCH transmission opportunity is combined and processed according to a third processing method to obtain the HARQ feedback information corresponding to the PSSCH transmission opportunity that is not repeated in the time domain, include:

The HARQ feedback information corresponding to the time-domain repeated PSSCH transmission occasions in each resource pool is merged into the HARQ feedback information corresponding to the PSSCH transmission occasions with the largest resource pool index, and the HARQ feedback information corresponding to the time-domain non-repetitive PSSCH transmission occasions is obtained.
The method according to claim 1, wherein, when one HARQ feedback resource corresponds to multiple PSFCH time slots, and one PSFCH time slot corresponds to one resource pool, when the corresponding PSSCH transmission opportunities in the respective resource pools exist for the multiple PSFCH time slots In the case of repeated domains, the determining of the PSSCH transmission opportunity set corresponding to the PSFCH time slot, and determining the HARQ feedback information corresponding to each PSSCH transmission opportunity in the PSSCH transmission opportunity set, including:

The PSSCH transmission opportunity corresponding to each PSFCH time slot is processed according to the fourth preprocessing method to obtain a second PSSCH transmission opportunity set, wherein the second PSSCH transmission opportunity set includes a plurality of time-domain non-repetitive PSSCH transmission opportunities ;

Generate HARQ feedback information corresponding to each PSSCH transmission occasion in the second PSSCH transmission occasion set.
The method according to claim 14, wherein the PSSCH transmission opportunity corresponding to each PSFCH time slot is processed according to a fourth preprocessing method to obtain a second PSSCH transmission opportunity set, comprising:

For each PSFCH time slot, order the PSSCH transmission opportunities corresponding to the PSFCH time slot according to the time index;

According to the PSFCH sequence index, sequence the PSSCH transmission opportunities sorted by the time index in turn;

The PSSCH transmission opportunities repeated in the time domain are combined with the PSSCH transmission opportunity with the smallest PSFCH slot index to obtain the second PSSCH transmission opportunity set.
The method according to claim 14, wherein the PSSCH transmission opportunity corresponding to each PSFCH time slot is processed according to a fourth preprocessing manner to obtain a second PSSCH transmission opportunity set, comprising:

For each PSFCH time slot, order the PSSCH transmission opportunities corresponding to the PSFCH time slot according to the time index;

According to the PSFCH sequence index, sequence the PSSCH transmission opportunities sorted by the time index in turn;

The PSSCH transmission opportunities repeated in the time domain are combined with the PSSCH transmission opportunity with the largest PSFCH slot index to obtain the second PSSCH transmission opportunity set.
The method according to claim 14, wherein the PSSCH transmission opportunity corresponding to each PSFCH time slot is processed according to a fourth preprocessing manner to obtain a second PSSCH transmission opportunity set, comprising:

For each PSFCH time slot, sorting the PSSCH transmission opportunities corresponding to the PSFCH time slot according to the time index;

According to the PSFCH timing index, the PSSCH transmission opportunities sorted by the time index are sequentially sorted; the second set of PSSCH transmission opportunities is obtained, wherein the PSSCH transmission opportunities repeated in the time domain are only sorted or counted once.
The method according to claim 14, wherein the PSSCH transmission opportunity corresponding to each PSFCH time slot is processed according to a fourth preprocessing manner to obtain a second PSSCH transmission opportunity set, comprising:

For each resource pool, determine the PSFCH timeslot in the resource pool;

Determine the PSSCH transmission opportunities corresponding to each PSFCH time slot in the resource pool and sort them according to the time index;

Sort or count the sorted PSSCH transmission opportunities corresponding to each PSFCH time slot in each resource pool according to the PSFCH time sequence index;

Sorting the sorted PSSCH transmission opportunities corresponding to the PSFCH time slots in each resource pool according to the resource pool index to obtain the second set of PSSCH transmission opportunities, wherein the PSSCH transmission opportunities repeated in the time domain are only in the resource pool with the smallest resource pool index Sort or count once.
The method according to claim 14, wherein the PSSCH transmission opportunity corresponding to each PSFCH time slot is processed according to a fourth preprocessing manner to obtain a second PSSCH transmission opportunity set, comprising:

For each resource pool, determine the PSFCH timeslot in the resource pool;

Determine the PSSCH transmission opportunities corresponding to each PSFCH time slot in the resource pool and sort them according to the time index;

Sort or count the sorted PSSCH transmission opportunities corresponding to each PSFCH time slot in each resource pool according to the PSFCH time sequence index;

Sorting the sorted PSSCH transmission opportunities corresponding to the PSFCH time slots in each resource pool according to the resource pool index to obtain the second set of PSSCH transmission opportunities, wherein the PSSCH transmission opportunities repeated in the time domain are only in the resource pool with the largest resource pool index Sort or count once.
The method according to claim 1, wherein, when one HARQ feedback resource corresponds to multiple PSFCH time slots, and one PSFCH time slot corresponds to one resource pool, when the corresponding PSSCH transmission opportunities in the respective resource pools exist for the multiple PSFCH time slots In the case of repeated domains, the determining of the PSSCH transmission opportunity set corresponding to the PSFCH time slot, and determining the HARQ feedback information corresponding to each PSSCH transmission opportunity in the PSSCH transmission opportunity set, including:

processing the PSSCH transmission opportunities corresponding to the PSFCH timeslots according to the first preprocessing mode to obtain a first set of PSSCH transmission opportunities;

generating HARQ feedback information corresponding to each PSSCH transmission opportunity in the first PSSCH transmission opportunity set;

The HARQ feedback information corresponding to each PSSCH transmission occasion is combined and processed according to the fifth processing manner, so as to obtain the HARQ feedback information corresponding to the PSSCH transmission occasions that are not repeated in the time domain.
The method according to any one of claims 6, 11 or 20, wherein the PSSCH transmission opportunity corresponding to the PSFCH time slot is processed according to a first preprocessing manner to obtain a first set of PSSCH transmission opportunities, comprising: :

For each PSFCH time slot, determine the PSSCH transmission opportunity corresponding to the PSFCH time slot in each resource pool;

For each resource pool, sort the PSSCH transmission opportunities corresponding to the PSFCH time slots according to the time index to obtain the sorted PSSCH transmission opportunities in each resource pool;

Sorting the sorted PSSCH transmission opportunities in each resource pool according to the resource pool index to obtain the sorted PSSCH transmission opportunities in the resource pool;

Sorting the PSSCH transmission occasions sorted by the resource pool according to the PSFCH timing index to obtain the first set of PSSCH transmission occasions.
The method according to any one of claims 6, 11 or 20, wherein the PSSCH transmission opportunity corresponding to the PSFCH time slot is processed according to a first preprocessing manner to obtain a first set of PSSCH transmission opportunities, comprising: :

Determine all resource pools activated by the user equipment UE;

For each resource pool, determine the PSFCH time slot corresponding to the HARQ feedback resource;

For each PSFCH time slot, determine the PSSCH transmission opportunity corresponding to the PSFCH time slot in the resource pool;

Sorting the PSSCH transmission opportunities corresponding to each PSFCH time slot according to the time index to obtain the sorted PSSCH transmission opportunities corresponding to the PSFCH time slot;

Sort the sorted PSSCH transmission opportunities corresponding to each PSFCH time slot according to the PSFCH timing index; obtain the sorted PSSCH transmission opportunities corresponding to the PSFCH time slot;

Sorting the sorted PSSCH transmission opportunities corresponding to the PSFCH time slots in each resource pool according to the resource pool index to obtain the first set of PSSCH transmission opportunities.
The method according to claim 20, wherein the HARQ feedback information corresponding to each PSSCH transmission opportunity is combined according to a fifth processing manner to obtain the HARQ feedback information corresponding to the PSSCH transmission opportunity that is not repeated in the time domain, include:

The HARQ feedback information corresponding to the PSSCH transmission timing repeated in the time domain is combined with the HARQ feedback information corresponding to the PSSCH transmission timing with the smallest PSFCH timing index according to the PSFCH timing index to obtain the HARQ feedback information corresponding to the PSSCH transmission timing that is not repeated in the time domain.
The method according to claim 20, wherein the HARQ feedback information corresponding to each PSSCH transmission opportunity is combined according to a fifth processing manner to obtain the HARQ feedback information corresponding to the PSSCH transmission opportunity that is not repeated in the time domain, include:

The HARQ feedback information corresponding to the PSSCH transmission timing repeated in the time domain is combined with the HARQ feedback information corresponding to the PSSCH transmission timing with the largest PSFCH timing index according to the PSFCH timing index to obtain the HARQ feedback information corresponding to the PSSCH transmission timing that is not repeated in the time domain.
The method according to claim 20, wherein the HARQ feedback information corresponding to each PSSCH transmission opportunity is combined according to a fifth processing manner to obtain the HARQ feedback information corresponding to the PSSCH transmission opportunity that is not repeated in the time domain, include:

According to the PSFCH timing index, the HARQ feedback information corresponding to each PSSCH transmission opportunity in each PSFCH time slot is sequentially generated; wherein, only one HARQ feedback information is generated for the PSSCH transmission opportunity repeated in the time domain.
The method according to claim 1, wherein, one HARQ feedback resource corresponds to multiple PSFCH time slots, and there is at least one PSFCH time slot corresponding to multiple resource pools, and the corresponding PSSCH transmission opportunities in different resource pools have time domain repetition, In the case where the PSSCH transmission opportunities corresponding to different PSFCH time slots are overlapped in the time domain, determining the set of PSSCH transmission opportunities corresponding to the PSFCH time slots, and determining the HARQ feedback information corresponding to each PSSCH transmission opportunity in the PSSCH transmission opportunity set ,include:

According to the resource pool index, determine multiple PSFCH time slots corresponding to one HARQ feedback resource in each resource pool;

For each PSFCH time slot, sorting the PSSCH transmission opportunities corresponding to the PSFCH time slot according to the time index;

For each resource pool, the sorted PSSCH transmission opportunities corresponding to all PSFCH time slots in the resource pool are sorted according to the PSFCH time sequence index;

Sorting the sequenced PSSCH transmission opportunities in each resource pool according to the resource pool index; obtaining a second set of PSSCH transmission opportunities corresponding to the HARQ feedback resources; wherein, the PSSCH transmission opportunities repeated in the time domain are only sorted or counted once;

Generate HARQ feedback information corresponding to each PSSCH transmission occasion in the second PSSCH transmission occasion set.
The method according to claim 1, wherein one HARQ feedback resource corresponds to multiple PSFCH time slots, and the PSSCH transmission opportunities corresponding to one PSFCH time slot in different resource pools have time domain repetition, and the PSSCH transmission opportunities corresponding to different PSFCH time slots In the case where the timing is repeated in the time domain, determining the PSSCH transmission occasion set corresponding to the PSFCH time slot, and determining the HARQ feedback information corresponding to each PSSCH transmission occasion in the PSSCH transmission occasion set, including:

Determine multiple PSFCH time slots corresponding to one HARQ feedback resource in each resource pool;

For each PSFCH time slot, the PSSCH transmission opportunities corresponding to the PSFCH time slots in each resource pool are sorted according to the time index, wherein the PSSCH transmission opportunities repeated in the time domain are only sorted or counted once;

The sequenced PSSCH transmission opportunities corresponding to each PSFCH time slot are sorted according to the PSFCH time slot index, and the second PSSCH transmission opportunity set corresponding to the HARQ feedback resource is obtained; wherein, the PSSCH transmission opportunities repeated in the time domain are only sequenced or counted once;

Generate HARQ feedback information corresponding to each PSSCH transmission occasion in the second PSSCH transmission occasion set.
The method of claim 1, further comprising:

Arrange the HARQ codebooks on each SL carrier in the order of carrier indices;

The arranged HARQ codebook is sent to the second node.
The method according to claim 1, wherein, in the case that the code block group CBG is not enabled for SL data transmission and only one transport block TB is transmitted, the length of the HARQ feedback information is a preset bit; When CBG is enabled and each TB is divided into M code block CBs, the length of the HARQ feedback information is determined by the actual number of TBs transmitted by PSSCH and the number of CBs within the CBG of each TB.
A codebook determination device, configured on a first node, includes:

a physical side link shared channel PSSCH transmission timing determination module, configured to determine a physical side link feedback channel PSFCH time slot corresponding to each hybrid automatic repeat request HARQ feedback resource and a set of PSSCH transmission opportunities corresponding to the PSFCH time slot;

The HARQ feedback information determining module is configured to determine the HARQ feedback information corresponding to each PSSCH transmission opportunity in the PSSCH transmission opportunity set;

The HARQ codebook determination module is configured to determine a semi-static HARQ codebook based on the HARQ feedback information.
A device comprising:

at least one processor;

a memory configured to store at least one program;

When the at least one program is executed by the at least one processor, the at least one processor implements the codebook determination method according to any one of claims 1-29.
A storage medium storing a computer program, which implements the codebook determination method according to any one of claims 1-29 when the computer program is executed by a processor.