CN112398594A

CN112398594A - sending method of sidelink HARQ-ACK, PSFCH resource determination method and equipment

Info

Publication number: CN112398594A
Application number: CN201910749230.0A
Authority: CN
Inventors: 张轶; 夏亮; 王启星
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2021-02-23
Also published as: WO2021027563A1

Abstract

The embodiment of the invention provides a sending method of sidelink HARQ-ACK, a PSFCH resource determining method and equipment, wherein the method comprises the following steps: determining a first PUCCH resource according to PUCCH configuration information and/or DCI sent by a network side; determining an HARQ codebook according to a first identifier or an indication of a network side, wherein the first identifier is used for indicating the priority information or QoS of a sidelink data packet; and transmitting the HARQ codebook on the first PUCCH resource. In some embodiments of the invention, the time delay and reliability of the Sidelink HARQ-ACK of different services can be ensured to be satisfied.

Description

sending method of sidelink HARQ-ACK, PSFCH resource determination method and equipment

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a method for sending Hybrid automatic repeat request acknowledgement (HARQ-ACK) of a direct link (SL), and a method and equipment for determining Physical direct link Feedback Channel (PSFCH) resources.

Background

In order to reuse a related design in a New Radio (NR) as much as possible, the Sidelink HARQ-ACK may be reported on a Physical Uplink Control Channel (PUCCH), and therefore how the Sidelink HARQ-ACK with multiple service priorities is reported through a Uu interface (interface between a terminal and a base station) is an urgent problem to be solved.

Different sildelink services have different requirements on time delay and reliability, and if the same PSFCH resource determination mechanism is used, the requirements of different services cannot be guaranteed, or certain resource waste is caused. Therefore, how to transmit the SFCI with multiple service priorities on the Sidelink is an urgent problem to be solved.

Disclosure of Invention

Embodiments of the present invention provide a sending method for Sidelink HARQ-ACK, a method for determining PSFCH resources, and a device, which solve a problem how to report a Sidelink HARQ-ACK with multiple service priorities through a Uu interface, and a problem how to transmit feedback control information (SFCI) of a direct link with multiple service priorities on the Sidelink.

According to a first aspect, an embodiment of the present invention provides a sending method of sidelink HARQ-ACK, including: determining a first PUCCH resource according to PUCCH configuration information and/or DCI sent by a network side;

determining an HARQ codebook according to a first identifier or an indication of a network side, wherein the first identifier is used for indicating the priority information or QoS of a sidelink data packet; the HARQ codebook comprises sidelink HARQ-ACK;

and transmitting the HARQ codebook on the first PUCCH resource.

Optionally, determining the HARQ codebook according to the first identifier includes: and determining the HARQ codebook according to the first identifier and the mapping relation between the first identifier and the HARQ codebook.

Optionally, a mapping relationship between the first identifier and the HARQ codebook is agreed in advance by a protocol; or, the mapping relation between the first identifier and the HARQ codebook is configured by a network side through a high-layer signaling.

Optionally, determining the HARQ codebook according to the first identifier includes: and determining the HARQ codebook according to the first identifier and a preset threshold value.

Optionally, determining the HARQ codebook according to the first identifier and a preset threshold value includes:

if the first identifier is smaller than a first preset threshold value, determining that the HARQ codebook is a first HARQ codebook;

or,

if the first identifier is smaller than or equal to a first preset threshold value, determining the HARQ codebook as a first HARQ codebook;

or,

if the first identifier is larger than a first preset threshold value, determining that the HARQ codebook is a first HARQ codebook;

or,

if the first identifier is larger than or equal to a first preset threshold value, determining the HARQ codebook as a first HARQ codebook;

or,

if the first identifier is smaller than a second preset threshold value, determining that the HARQ codebook is a second HARQ codebook;

or,

if the first identifier is smaller than or equal to a second preset threshold value, determining the HARQ codebook as a second HARQ codebook;

or,

if the first identifier is larger than a second preset threshold value, determining that the HARQ codebook is a second HARQ codebook;

or,

and if the first identifier is larger than or equal to a second preset threshold value, determining the HARQ codebook as a second HARQ codebook.

Optionally, the first threshold or the second threshold is agreed in advance by a protocol; or, the first threshold or the second threshold is configured by a network side through a high-level signaling.

Optionally, determining the HARQ codebook according to an instruction from the network side includes:

receiving first indication information sent by a network side, wherein the first indication information indicates an HARQ codebook used by a terminal;

and determining an HARQ codebook according to the first indication information.

Optionally, the first indication information is any one of:

scheduling a Downlink Control Information (DCI) format of sidelink data;

radio Network Temporary Identity (RNTI) for scrambling DCI (Downlink control information) for scheduling sidelink data;

the first indication field is used for indicating a HARQ codebook corresponding to the sidelink data scheduled by the DCI.

Optionally, the first indication information is generated by the network side according to priority information and/or QoS information reported by the terminal.

Optionally, the HARQ codebook comprises one or more of:

a slot-based HARQ codebook;

sub-slot based HARQ codebook.

In a second aspect, an embodiment of the present invention further provides a method for determining a PSFCH resource, where the method includes:

receiving second indication information, wherein the second indication information is used for indicating the priority or the service quality of a data packet on a physical direct link shared channel PSSCH scheduled by direct link control information (SCI);

and determining one or more of a PSFCH resource pool or resource set, a format of the PSFCH, frequency domain resources of the PSFCH and code domain resources of the PSFCH according to the second indication information.

Optionally, determining one or more of a PSFCH resource pool or resource set, a format of the PSFCH, frequency domain resources of the PSFCH, and code domain resources of the PSFCH according to the second indication information includes:

determining a PSFCH resource pool or a resource set from the configured at least one PSFCH resource pool or resource set according to the second indication information, or,

determining a format of the PSFCH from the configured PSFCH resource pool or the PSFCH resource set according to the second indication information, or,

and according to the second indication information, determining the frequency domain resources of the PSFCH and/or the code domain resources of the PSFCH from the configured PSFCH resource pool or the PSFCH resource set.

Optionally, the configured PSFCH resource pool or resource set is configured in a predefined manner by a protocol, or the network side is configured by high-layer signaling.

Optionally, the receiving the second indication information includes:

and receiving an SCI, wherein the SCI comprises the second indication information.

In a third aspect, an embodiment of the present invention further provides a terminal, including: a first processor and a first transceiver, the first processor to: determining a first PUCCH resource according to PUCCH configuration information and/or DCI sent by a network side; determining an HARQ codebook according to a first identifier or an indication of a network side, wherein the first identifier is used for indicating the priority information or QoS of a sidelink data packet; the first transceiver is to: and transmitting the HARQ codebook on the first PUCCH resource.

In a fourth aspect, an embodiment of the present invention further provides a terminal, including: the device comprises a first determining module, a second determining module and a sending module, wherein the first determining module is used for: determining a first PUCCH resource according to PUCCH configuration information and/or Downlink Control Information (DCI) sent by a network side; the second determination module is to: determining an HARQ codebook according to a first identifier or an indication of a network side, wherein the first identifier is used for indicating the priority information or QoS of a sidelink data packet; the HARQ codebook comprises sidelink HARQ-ACK; the sending module is used for: and transmitting the HARQ codebook on the first PUCCH resource.

In a fifth aspect, an embodiment of the present invention further provides a terminal, including: a second transceiver and a second processor, the second transceiver to: receiving second indication information, wherein the second indication information is used for indicating the priority or the service quality of a data packet on a physical straight-through link shared channel PSSCH scheduled by straight-through link control information; the second processor is to: and determining one or more of a PSFCH resource pool or resource set, a format of the PSFCH, frequency domain resources of the PSFCH and code domain resources of the PSFCH according to the second indication information.

In a sixth aspect, an embodiment of the present invention further provides a terminal, including: a second receiving module and a fourth determining module, wherein the second receiving module is configured to: receiving second indication information, wherein the second indication information is used for indicating the priority or the service quality of a data packet on a physical straight-through link shared channel PSSCH scheduled by straight-through link control information; the fourth determining module is to: and determining one or more of a PSFCH resource pool or resource set, a format of the PSFCH, frequency domain resources of the PSFCH and code domain resources of the PSFCH according to the second indication information.

In a seventh aspect, an embodiment of the present invention further provides a terminal, including: a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the method for transmitting HARQ-ACK as described above; alternatively, the steps of the method of PSFCH resource determination described above are implemented.

In an eighth aspect, the embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements the steps of the method for transmitting HARQ-ACK as described above; alternatively, the steps of the method of PSFCH resource determination described above are implemented.

In some embodiments of the invention, the time delay and reliability of the Sidelink HARQ-ACK of different services can be ensured to be satisfied. In other embodiments of the present invention, it can be ensured that the requirements of the SFCI for different services on time delay and reliability are met.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a diagram illustrating a sidelink HARQ-ACK reported from a transmitting end to a base station;

fig. 2 is one of flowcharts of a sending method of sidelink HARQ-ACK according to an embodiment of the present invention;

fig. 3 is a flowchart of a method for determining PSFCH resources according to an embodiment of the present invention;

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

fig. 5 is a second schematic diagram of a terminal according to the embodiment of the invention;

fig. 6 is a third schematic diagram of a terminal according to an embodiment of the present invention;

FIG. 7 is a fourth schematic diagram of a terminal according to an embodiment of the present invention;

fig. 8 is a fifth schematic diagram of a terminal according to an embodiment of the invention.

Detailed Description

First, related art is: sidelink HARQ-ACK is transmitted in Uu.

(1) Regarding an NR Vehicle-to-evolution (V2X) mode 1(mode-1) HARQ-ACK transmission method: referring to fig. 1, the NR V2X mode-1sidelink HARQ-ACK transmission is illustrated, and the specific steps are as follows:

step 1: a transmitting end (transmitter) transmits a Scheduling Request (SR) and a sidelink Buffer Status Report (BSR) to a base station;

step 2: a base station (gNB) sends DCI to a transmitter for resource allocation;

and step 3: the transmitter transmits SCI and data (data) in corresponding resources according to a received sidelink grant issued by the base station;

and 4, step 4: a receiving end (receiver) blindly detects the control information (SCI) of the direct link, receives data and sends SFCI to a transmitter;

and 5: the transmitter sends a sidelink HARQ-ACK to the base station and applies for retransmission resources to the base station;

step 6: and the base station issues the DCI to the transmitter to schedule retransmission.

(2) Near field communication Priority (ProSe Per-Packet Priority, PPPP) for packets in Long Term Evolution (LTE) -V2X:

the number of the LTE V2X PPPPs is 8, the PPPPs is generated by an application layer, priority information (priority information) is reported to a base station by a terminal to reflect the PPPPs, and the base station can derive a delay budget (delay budget) of a corresponding data packet (packet) through the priority information;

the LTE SCI format 1 includes 3-bit (bit) priority information for terminal sensing (sensing) purposes.

The NR will multiplex the PPPP idea with the design of QoS flows (flows) to generate e.g. PFI identities (PC5QoS Flow identities) for characterizing traffic priorities and QoS requirements (requirements).

Second, related art two: the Sidelink HARQ-ACK is transmitted at Sidelink/PC 5.

Other types of PSFCH formats require Further research (FFS) by currently supporting at least one sequence-based Physical Sidelink Feedback Channel (PSFCH) format.

Determining mode of PSFCH resource:

the time gap between the PSFCH and the associated PSSCH is preconfigured.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The technology described herein is not limited to a 5th-generation (5G) system and a later-evolution communication system, and is not limited to an LTE/LTE evolution (LTE-a) system, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems.

The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system can implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA)), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX)), IEEE 802.20, Flash-OFDM, and the like. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership Project" (3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies.

Referring to fig. 2, an embodiment of the present invention provides a method for sending HARQ-ACK, which is applicable to a terminal, for example, a sending end, and includes the following specific steps: step 201, step 202 and step 203.

Step 201: and determining the first PUCCH resource according to the PUCCH configuration information and/or the DCI sent by the network side.

Step 202: determining an HARQ codebook according to a first identifier or an indication of a network side, wherein the first identifier is used for indicating the priority information or QoS of a sidelink data packet, and the HARQ codebook comprises sidelink HARQ-ACK; .

In some embodiments, first indication information sent by a network side is received, and the first indication information indicates a HARQ codebook used by a terminal; and determining an HARQ codebook according to the first indication information.

Step 203: and transmitting the HARQ codebook on the first PUCCH resource.

In some embodiments, the HARQ codebook comprises one or more of: (1) a slot-based (slot-based) HARQ codebook; (2) sub-slot based (sub-slot based) HARQ codebook.

In some embodiments, the HARQ codebook is determined according to the first identifier and a mapping relationship between the first identifier and the HARQ codebook. Further, the mapping relation between the first identifier and the HARQ codebook is agreed in advance by a protocol; or, the mapping relation between the first identifier and the HARQ codebook is configured by a network side through a high-layer signaling.

Optionally, the mapping relationship between the first identifier and the HARQ codebook may be referred to in table 1, and it should be noted that the HARQ codebook shown in table 1 includes HARQ codebook 1 and HARQ codebook 2, and other situations are similar and will not be described here.

Table 1:

first mark	HARQ codebook
		1	HARQ codebook 1
2	HARQ codebook 2
		3	HARQ codebook 1
4	HARQ codebook 2
		5	HARQ codebook 1
6	HARQ codebook 2
		7	HARQ codebook 1
8	HARQ codebook 2

In some embodiments, the HARQ codebook is determined according to the first identifier and a preset threshold value. For example: the method is realized by the following steps:

or,

Further, the first threshold value or the second threshold value is predetermined by a protocol; or, the first threshold or the second threshold is configured by a network side through a high-level signaling.

It is to be understood that the first threshold and the second threshold may be the same or different, and the first threshold and the second threshold are not particularly limited in the embodiment of the present invention.

In some embodiments, the first indication information is any one of:

(1) the DCI format of sidelink data is scheduled.

For example, there may be two DCI formats for scheduling sidelink data, including: the terminal receives the DCI format I, and the HARQ codebook corresponding to the scheduled sidelink data is a first HARQ codebook; and when the terminal receives the DCI format II, the HARQ codebook corresponding to the scheduled sidelink data is the second HARQ codebook.

(2) Radio Network Temporary Identity (RNTI) for scrambling DCI scheduling sidelink data.

For example, the RNTI used for scrambling DCI scheduling sidelink data may be two, including: the terminal receives DCI (downlink control information) scrambled by the first RNTI to schedule sidelink data, and an HARQ codebook corresponding to the scheduled sidelink data is a first HARQ codebook; when the terminal receives DCI (downlink control information) scrambled by the second RNTI (radio network temporary identifier) to schedule sidelink data, the HARQ codebook corresponding to the scheduled sidelink data is a second HARQ codebook.

(3) The first indication field is used for indicating a HARQ codebook corresponding to the sidelink data scheduled by the DCI.

For example, the first indication field in the DCI scheduling sidelink data includes 1 bit, the terminal receives the DCI scheduling sidelink data, when the first indication field included therein is "0", the HARQ codebook corresponding to the scheduled sidelink data is the first HARQ codebook, and when the first indication field included therein is "1", the HARQ codebook corresponding to the scheduled sidelink data is the second codebook.

In some embodiments, the first indication information is generated by the network side according to priority information and/or QoS information reported by the terminal.

In the embodiment of the invention, the time delay and the reliability of the Sidelink HARQ-ACK of different services can be ensured to be satisfied.

Referring to fig. 3, an embodiment of the present invention further provides a method for determining a PSFCH resource, which is applicable to a terminal, for example, a receiving end, and includes the specific steps of: step 301 and step 302.

Step 301: receiving second indication Information, wherein the second indication Information is used for indicating the priority or quality of service (QoS) of a data packet on a physical direct link shared channel PSSCH scheduled by direct link Control Information (SCI);

for example: and receiving an SCI, wherein the SCI comprises the second indication information.

Step 302: and determining one or more of a PSFCH resource pool or resource set, a format of the PSFCH, frequency domain resources of the PSFCH and code domain resources of the PSFCH according to the second indication information.

In some embodiments, one PSFCH resource pool or one resource set is determined from the configured at least one PSFCH resource pool or resource set according to the second indication information, or one format of the PSFCH is determined from the configured PSFCH resource pool or PSFCH resource set according to the second indication information, or a frequency domain resource of the PSFCH and/or a code domain resource of the PSFCH is determined from the configured PSFCH resource pool or PSFCH resource set according to the second indication information.

In some embodiments, the configured PSFCH resource pool or resource set is configured by a predefined manner of a protocol, or by a higher layer signaling on the network side.

The embodiment of the invention can ensure that the time delay and reliability requirements of the SFCI of different services are met.

The method for transmitting HARQ-ACK and the method for determining PSFCH resources according to the embodiments of the present invention are described below with reference to example one, example two, and example three.

Example one: a method for sending multi-service priority sidelink HARQ-ACK comprises the following steps:

and configuring the mapping relation between the first identifier and the HARQ codebook through a predefined mode or a mode configured by the base station through high-level signaling.

Optionally, the first identifier comprises one or more of: PFI Identifiers (PC5QoS Flow Identifiers), PPPP, etc. for characterizing QoS requirements of the service/data packet corresponding to the HARQ codebook, specifically including the following ways:

-configuring the first identifier threshold value in a predefined manner or in a manner configured by the base station through higher layer signaling, and using the first HARQ codebook when the first identifier corresponding to the packet is lower or higher than the first threshold value, and using the second HARQ codebook when the first identifier corresponding to the packet is higher or lower than the second threshold value.

-the first or second HARQ codebook comprises one or more of: slot-based HARQ codebook and corresponding HARQ-ACK mapped PUCCH configuration, sub-slot-based HARQ codebook mode and corresponding HARQ-ACK mapped PUCCH configuration.

-configuring a mapping table of said first identifier and HARQ codebook in a predefined manner or in a manner configured by the base station through higher layer signaling, see table 1.

And the terminal determines the used HARQ codebook and the corresponding PUCCH configuration according to the first identifier corresponding to the data packet.

Example two: a method for sending multi-service priority sidelink HARQ-ACK comprises the following steps:

the base station determines a codebook used by the sidelink HARQ-ACK according to the priority reported by the terminal, PFI (PC5QoS Flow Identifiers) and other related information, and indicates the HARQ codebook used by the terminal through the physical layer downlink control information of scheduling sidelink data. The specific implementation mode is as follows:

for example, there are at least two DCI formats for scheduling sidelink data: DCI format 5A and DCI format 5B, when using DCI format 5A to schedule the sidelink data, using a first HARQ codebook, when using DCI format 5B to schedule the sidelink data, using a second HARQ codebook;

for example, there are at least two RNTIs for scrambling DCI scheduling sidelink data, and when DCI scheduling sidelink data is scrambled using RNTI 1, the first HARQ codebook is used; when the DCI of the sidelink data is scrambled and scheduled by using the RNTI 2, using a second HARQ codebook;

for example, adding a HARQ codebook indication field in DCI scheduling sidelink data, for indicating that HARQ-ACK corresponding to sidelink data scheduled by the DCI uses the first HARQ codebook or the second HARQ codebook

-the UE determining HARQ codebook used and corresponding PUCCH configuration information according to the indication of the base station

In the first example and the second example, the delay and the reliability of sidelink HARQ-ACK of different services are ensured to be satisfied by configuring the mapping relationship between the PC5QoS Flow Identifier and sidelink HARQ codebook, or by introducing different DCI formats, RNTIs, and the like for scheduling sidelink data.

Example three: regarding the manner of determining the PSFCH resource based on the first information:

the first Information is contained in direct link Control Information (SCI) and is used for indicating the priority of a data packet on a PSSCH scheduled by the first Information;

-configuring a plurality of PSFCH resource pools/resource sets for the receiving end in a predefined manner or in a manner configured by the base station/transmitting end through a high-level signaling, and determining, by the receiving end, one of the PSFCH resource pools/resource sets from the configured plurality of resource pools according to the first information; or

-configuring a PSFCH resource pool/resource set for the receiving end in a predefined manner or in a manner configured by the base station/transmitting end through a high-level signaling, the receiving end determining a format of the PSFCH from the configured resource pool/resource set according to the first information; or

-configuring a PSFCH resource pool/resource set for the receiving end in a predefined manner or in a manner configured by the base station/transmitting end through a high-level signaling, and determining, by the receiving end, the frequency domain/code domain resources of the PSFCH from the configured resource pool according to the first information.

In example three, the time delay and reliability requirements of the SFCI for different services are guaranteed to be met by implicitly determining the resource/PSFCH format of the PSFCH by using the priority.

The embodiment of the invention also provides a terminal, and as the principle of solving the problem of the terminal is similar to the method for sending the HARQ-ACK in the embodiment of the invention, the implementation of the terminal can refer to the implementation of the method, and repeated parts are not described again.

Referring to fig. 4, an embodiment of the present invention further provides a terminal, where the terminal 400 includes: a first processor 401 and a first transceiver 402, the first processor 401 being configured to: determining a first PUCCH resource according to PUCCH configuration information and/or DCI sent by a network side; determining an HARQ codebook according to a first identifier or an indication of a network side, wherein the first identifier is used for indicating the priority information or QoS of a sidelink data packet, and the HARQ codebook comprises sidelink HARQ-ACK; (ii) a The first transceiver 402 is configured to: and transmitting the HARQ codebook on the first PUCCH resource.

In some embodiments, the first identifier is used to indicate priority information, or quality of service, QoS, of a sidelink data packet.

In some embodiments, the first processor 401 is further configured to: and determining the HARQ codebook according to the first identifier and the mapping relation between the first identifier and the HARQ codebook.

In some embodiments, the mapping relationship between the first identifier and the HARQ codebook is agreed in advance by a protocol; or, the mapping relation between the first identifier and the HARQ codebook is configured by a network side through a high-layer signaling.

In some embodiments, the first processor 401 is further configured to: and determining the HARQ codebook according to the first identifier and a preset threshold value.

In some embodiments, the first processor 401 is further configured to:

or,

and if the first identifier is larger than or equal to a second preset threshold value, determining the HARQ codebook as a second HARQ codebook. In some embodiments, the first threshold value or the second threshold value is pre-agreed by a protocol; or, the first threshold or the second threshold is configured by a network side through a high-level signaling.

In some embodiments, the first transceiver 402 is further configured to: receiving first indication information sent by a network side, wherein the first indication information indicates an HARQ codebook used by a terminal; the first processor 401 is further configured to: and determining an HARQ codebook according to the first indication information.

In some embodiments, the first indication information is any one of:

scheduling the DCI format of sidelink data;

RNTI for scrambling DCI scheduling sidelink data;

In some embodiments, the first indication information is generated by the network side according to priority information and/or quality of service QoS information reported by the terminal.

In some embodiments, the HARQ codebook comprises one or more of: a slot-based HARQ codebook; sub-slot based HARQ codebook.

The terminal provided by the embodiment of the present invention can implement the above-mentioned embodiments, and the implementation principle and technical effect are similar, which are not described herein again.

Referring to fig. 5, an embodiment of the present invention further provides a terminal, where the terminal 500 includes: a first determining module 501, a second determining module 502 and a sending module 503, wherein the first determining module 501 is configured to: determining a first PUCCH resource according to PUCCH configuration information and/or Downlink Control Information (DCI) sent by a network side; the second determining module 502 is configured to: determining an HARQ codebook according to a first identifier or an indication of a network side, wherein the first identifier is used for indicating the priority information or QoS of a sidelink data packet; the sending module 503 is configured to: and transmitting the HARQ codebook on the first PUCCH resource.

In some embodiments, the second determination module 502 is further configured to: and determining the HARQ codebook according to the first identifier and the mapping relation between the first identifier and the HARQ codebook.

In some embodiments, the second determination module 502 is further configured to: and determining the HARQ codebook according to the first identifier and a preset threshold value.

In some embodiments, the second determination module 502 is further configured to: if the first identifier is smaller than, smaller than or equal to, larger than or equal to a first preset threshold value, determining that the HARQ codebook is a first HARQ codebook; or, if the first identifier is smaller than, smaller than or equal to, larger than, or larger than or equal to a second preset threshold value, determining that the HARQ codebook is a second HARQ codebook.

In some embodiments, the first threshold value or the second threshold value is pre-agreed by a protocol; or, the first threshold or the second threshold is configured by a network side through a high-level signaling.

In some embodiments, the terminal further comprises a first receiving module, configured to: receiving first indication information sent by a network side, wherein the first indication information indicates an HARQ codebook used by a terminal; the second determination module 502 is further configured to: and determining an HARQ codebook according to the first indication information.

In some embodiments, the first indication information is any one of:

scheduling the DCI format of sidelink data;

RNTI for scrambling DCI scheduling sidelink data;

The embodiment of the present invention further provides a terminal, and as the principle of solving the problem of the terminal is similar to the method for determining the PSFCH resource in the embodiment of the present invention, the implementation of the terminal may refer to the implementation of the method, and repeated parts are not described again.

Referring to fig. 6, an embodiment of the present invention further provides a terminal, where the terminal 600 includes: a second transceiver 601 and a second processor 602, the second transceiver 601 being configured to: receiving second indication information, wherein the second indication information is used for indicating the priority or the service quality of a data packet on a PSSCH scheduled by straight-through link control information; the second processor 602 is configured to: and determining one or more of a PSFCH resource pool or resource set, a format of the PSFCH, frequency domain resources of the PSFCH and code domain resources of the PSFCH according to the second indication information.

In some embodiments, the second processor 602 is further configured to: according to the second indication information, determining a PSFCH resource pool or a resource set from at least one configured PSFCH resource pool or resource set, or according to the second indication information, determining a format of a PSFCH from the configured PSFCH resource pool or PSFCH resource set, or according to the second indication information, determining frequency domain resources of the PSFCH and/or code domain resources of the PSFCH from the configured PSFCH resource pool or PSFCH resource set.

In some embodiments, the second transceiver 601 is further configured to: and receiving an SCI, wherein the SCI comprises the second indication information.

Referring to fig. 7, an embodiment of the present invention further provides a terminal, where the terminal 700 includes: a second receiving module 701 and a fourth determining module 702, where the second receiving module 701 is configured to: receiving second indication information, wherein the second indication information is used for indicating the priority or the service quality of a data packet on a PSSCH scheduled by straight-through link control information; the fourth determining module 702 is configured to: and determining one or more of a PSFCH resource pool or resource set, a format of the PSFCH, frequency domain resources of the PSFCH and code domain resources of the PSFCH according to the second indication information.

In some embodiments, the fourth determination module 702 is further configured to: according to the second indication information, determining a PSFCH resource pool or a resource set from at least one configured PSFCH resource pool or resource set, or according to the second indication information, determining a format of a PSFCH from the configured PSFCH resource pool or PSFCH resource set, or according to the second indication information, determining frequency domain resources of the PSFCH and/or code domain resources of the PSFCH from the configured PSFCH resource pool or PSFCH resource set.

In some embodiments, the second receiving module 701 is further configured to: and receiving an SCI, wherein the SCI comprises the second indication information.

As shown in fig. 8, the terminal 800 shown in fig. 8 includes: at least one processor 801, memory 802, at least one network interface 804, and a user interface 803. The various components in terminal 800 are coupled together by a bus system 805. It is understood that the bus system 805 is used to enable communications among the components connected. The bus system 805 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 805 in fig. 8.

The user interface 803 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.

It will be appreciated that the memory 802 in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration, and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data rate Synchronous Dynamic random access memory (ddr DRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 802 of the subject systems and methods described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 802 holds the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 8021 and application programs 8022.

The operating system 8021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application program 8022 includes various application programs, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program implementing a method according to an embodiment of the present invention may be included in application program 8022.

In one embodiment of the present invention, the steps of the above method are implemented by calling a program or instructions stored in the memory 802, specifically, a program or instructions stored in the application program 8022, and executing the program or instructions.

The terminal provided by the embodiment of the present invention can execute the above method embodiment, and the implementation principle and technical effect are similar, which are not described herein again.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or may be embodied in software instructions executed by a processor. The software instructions may consist of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, a removable hard disk, a compact disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may be carried in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.

Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.

Claims

1. A method for sending a sidelink HARQ-ACK (hybrid automatic repeat request-acknowledgement), comprises the following steps:

determining a first PUCCH resource according to Physical Uplink Control Channel (PUCCH) configuration information and/or Downlink Control Information (DCI) sent by a network side;

determining an HARQ codebook according to a first identifier or an indication of a network side, wherein the first identifier is used for indicating priority information of a sidelink data packet or service quality QoS; the HARQ codebook comprises sidelink HARQ-ACK;

and transmitting the HARQ codebook on the first PUCCH resource.

2. The method of claim 1, wherein determining the HARQ codebook according to the first identifier comprises:

and determining the HARQ codebook according to the first identifier and the mapping relation between the first identifier and the HARQ codebook.

3. The method of claim 2,

the mapping relation between the first identifier and the HARQ codebook is agreed in advance by a protocol; or,

and the mapping relation between the first identifier and the HARQ codebook is configured by a network side through high-layer signaling.

4. The method of claim 1, wherein determining the HARQ codebook according to the first identifier comprises:

and determining the HARQ codebook according to the first identifier and a preset threshold value.

5. The method of claim 4, wherein determining the HARQ codebook according to the first identifier and a preset threshold comprises:

or,

6. The method of claim 5, wherein the first threshold or the second threshold is pre-agreed upon by a protocol; or, the first threshold or the second threshold is configured by a network side through a high-level signaling.

7. The method of claim 1, wherein determining the HARQ codebook according to the indication of the network side comprises:

and determining an HARQ codebook according to the first indication information.

8. The method according to claim 7, wherein the first indication information is any one of:

scheduling a Downlink Control Information (DCI) format of sidelink data;

9. The method according to claim 7, wherein the first indication information is generated by the network side according to priority information and/or quality of service (QoS) information reported by the terminal.

10. The method of claim 1, wherein the HARQ codebook comprises one or more of:

a slot-based HARQ codebook;

sub-slot based HARQ codebook.

11. A method for determining PSFCH resources of a physical direct link feedback channel (PRFCH) is characterized by comprising the following steps:

12. The method of claim 11, wherein determining one or more of a pool or set of PSFCH resources, a format of the PSFCH, frequency domain resources of the PSFCH, and code domain resources of the PSFCH according to the second indication information comprises:

13. The method according to claim 11, wherein the configured PSFCH resource pool or resource set is configured by a predefined manner of a protocol or by a higher layer signaling on the network side.

14. The method of claim 11, wherein receiving the second indication comprises:

15. A terminal, comprising: a first processor and a first transceiver, the first processor to: determining a first PUCCH resource according to PUCCH configuration information and/or DCI sent by a network side; determining an HARQ codebook according to a first identifier or an indication of a network side, wherein the first identifier is used for indicating the priority information or QoS of a sidelink data packet; the HARQ codebook comprises sidelink HARQ-ACK; the first transceiver is to: and transmitting the HARQ codebook on the first PUCCH resource.

16. A terminal, comprising: the device comprises a first determining module, a second determining module and a sending module, wherein the first determining module is used for: determining a first PUCCH resource according to PUCCH configuration information and/or Downlink Control Information (DCI) sent by a network side; the second determination module is to: determining an HARQ codebook according to a first identifier or an indication of a network side, wherein the first identifier is used for indicating the priority information or QoS of a sidelink data packet; the sending module is used for: and transmitting the HARQ codebook on the first PUCCH resource.

17. A terminal, comprising: a second transceiver and a second processor, the second transceiver to: receiving second indication information, wherein the second indication information is used for indicating the priority or the service quality of a data packet on a physical straight-through link shared channel PSSCH scheduled by straight-through link control information; the second processor is to: and determining one or more of a PSFCH resource pool or resource set, a format of the PSFCH, frequency domain resources of the PSFCH and code domain resources of the PSFCH according to the second indication information.

18. A terminal, comprising: a second receiving module and a fourth determining module, wherein the second receiving module is configured to: receiving second indication information, wherein the second indication information is used for indicating the priority or the service quality of a data packet on a physical straight-through link shared channel PSSCH scheduled by straight-through link control information; the fourth determining module is to: and determining one or more of a PSFCH resource pool or resource set, a format of the PSFCH, frequency domain resources of the PSFCH and code domain resources of the PSFCH according to the second indication information.

19. A terminal, comprising: a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the method of transmitting HARQ-ACK according to any of claims 1 to 10; alternatively, the steps of a method of PSFCH resource determination according to any of claims 11 to 14 are implemented.

20. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the method of transmission of HARQ-ACK according to any one of claims 1 to 10; alternatively, the steps of a method of PSFCH resource determination according to any of claims 11 to 14 are implemented.