CN117527161A

CN117527161A - Physical side chain feedback channel PSFCH sending method and terminal

Info

Publication number: CN117527161A
Application number: CN202210892461.9A
Authority: CN
Inventors: 李萍; 纪子超; 王欢
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2024-02-06
Also published as: WO2024022283A1

Abstract

The application discloses a physical side link feedback channel PSFCH sending method and a terminal, which belong to the technical field of communication, and the physical side link feedback channel PSFCH sending method in the embodiment of the application comprises the following steps: the method comprises the steps that a first terminal determines M1 PSFCH which can be transmitted simultaneously; the M1 PSFCHs comprise at least one PSFCH meeting COT sharing conditions; the first terminal transmits the M1 PSFCHs.

Description

Physical side chain feedback channel PSFCH sending method and terminal

Technical Field

The application belongs to the technical field of communication, and particularly relates to a physical side chain feedback channel PSFCH sending method and a terminal.

Background

Side Link (SL) transmission, i.e. data transmission between terminals is performed directly on the physical layer. The NR SL supports hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ) feedback of the physical side link feedback channel (Physical Sidelink Feedback Channel, PSFCH), and after receiving the physical side link shared channel (Physical Sidelink Shared Channel, PSSCH) transmitted by the transmitting end TX terminal, the receiving end RX terminal needs to transmit the PSFCH for feedback to improve the reliability of the system.

In future communication systems, shared spectrum such as unlicensed band (unlicensed band) may be used as a supplement to licensed band (licensed band) to help operators expand services. Therefore, it is highly desirable for those skilled in the art to implement a PSFCH transmission method for a shared spectrum.

Disclosure of Invention

The embodiment of the application provides a physical side link feedback channel PSFCH sending method and a terminal, which can solve the problem of how to realize the PSFCH sending method aiming at a shared spectrum.

In a first aspect, a method for sending a PSFCH of a physical side link feedback channel is provided, including:

the method comprises the steps that a first terminal determines M1 PSFCH which can be transmitted simultaneously; the M1 PSFCHs comprise at least one PSFCH meeting COT sharing conditions;

the first terminal transmits the M1 PSFCHs.

In a second aspect, there is provided a physical side link feedback channel PSFCH transmitting apparatus, comprising:

a processing module, configured to determine M1 PSFCHs that can be simultaneously transmitted; the M1 PSFCHs comprise at least one PSFCH meeting COT sharing conditions;

and the sending module is used for sending the M1 PSFCHs.

In a third aspect, there is provided a first terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.

In a fourth aspect, a first terminal is provided, including a processor and a communication interface, where the processor is configured to determine M1 PSFCHs that can be sent simultaneously; the M1 PSFCHs comprise at least one PSFCH meeting COT sharing conditions; the communication interface is configured to send the M1 PSFCHs.

In a fifth aspect, a communication system is provided, comprising: a first terminal and a second terminal, the first terminal being operable to perform the steps of the PSFCH sending method according to the first aspect, the second terminal being in communication with the first terminal via a side link.

In a sixth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the steps of the method according to the first aspect.

In a seventh aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being configured to execute programs or instructions for implementing the method according to the first aspect.

In an eighth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement the steps of the PSFCH transmission method according to the first aspect.

In the embodiment of the application, a first terminal determines M1 PSFCHs capable of being transmitted simultaneously, and transmits the M1 PSFCHs; the M1 PSFCHs include at least one PSFCH that satisfies the COT sharing condition, that is, it may be ensured that at least one PSFCH that satisfies the sharing COT condition is not discarded when the first terminal determines the PSFCHs that can be simultaneously transmitted, thereby implementing a PSFCH transmission method for a shared spectrum.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 is a schematic diagram of a side link communication scenario provided in an embodiment of the present application;

fig. 3 is a schematic diagram of side-chain channel resource allocation provided in an embodiment of the present application;

fig. 4 is a schematic flow chart of a PSFCH sending method provided in an embodiment of the present application;

fig. 5 is one of the interactive flow diagrams of the PSFCH sending method provided in the embodiment of the present application;

fig. 6 is a second schematic diagram of an interaction flow of the PSFCH sending method provided in the embodiment of the present application;

fig. 7 is one of schematic structural diagrams of a PSFCH sending apparatus provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 9 is a schematic hardware structure of a terminal according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

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

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

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiments of the present application, only a base station in an NR system is described as an example, and the specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and charging rules function units (Policy and Charging Rules Function, PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), and the like. In the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

First, related concepts related to the embodiments of the present application will be described:

in future communication systems, shared spectrum such as unlicensed band (unlicensed band) may be used as a supplement to licensed band (licensed band) to help operators expand services. To keep pace with NR deployment and maximize as much as possible unlicensed access based on NR, unlicensed bands may operate in the 5GHz,37GHz and 60GHz bands. Since unlicensed bands are shared by multiple radio access technologies (Radio Acess Technology, RAT), such as WiFi, radar, LTE-licensed assisted access (License Assisted Access, LAA), in certain areas unlicensed bands must be used in compliance with corresponding rules to ensure that all devices can use the resources fairly, such as listen before talk (Listen Before Talk, LBT), maximum channel occupancy time (Maximum Channel Occupancy Time, MCOT), etc. When the transmission node needs to transmit information, it needs to make LBT first, and performs power Detection (ED) on surrounding nodes, and when the detected power is lower than a threshold, it considers that the channel is empty (idle), and the transmission node can transmit. Otherwise, the channel is considered as busy, and the transmission node cannot transmit. The transmission node may be a base station, a terminal, a WiFi Access Point (AP), etc. After the transmission node starts transmission, the occupied channel time COT cannot exceed MCOT. Furthermore, according to the rules of limiting and occupying channel bandwidth (Occupied Channel Bandwidth, OCB), on unlicensed bands, a transmitting node occupies at least 70% (60 GHz) or 80% (5 GHz) of the entire band at each transmission.

Types (types) of LBT commonly used in NR-U can be classified into Type1, type2A, type2B, and Type2C.

Type1 LBT is a channel interception mechanism based on back-off, and when a transmission node detects that a channel is busy, the transmission node performs back-off, and continues interception until the channel is empty.

Type2C LBT is that the transmitting node does not make LBT, i.e. no LBT or transmits immediately (immediate transmission).

Type2A and Type2B LBT are one-shot LBT, namely, the node makes one LBT before transmission, if the channel is empty, the transmission is carried out, and if the channel is busy, the transmission is not carried out. The difference is that Type2A makes LBT within 25us, which is suitable for the interval gap between two transmissions to be greater than or equal to 25us when sharing COT. While Type2B makes LBT within 16us, it is suitable for the gap between two transmissions to be equal to 16us when sharing COT.

Type 2LBT is suitable for LAA/eLAA/FeLAA, when COT is shared, gap between two transmissions is 25us or more, and eNB and terminal can adopt Type 2LBT.

In addition, in the band range 2-2, the types of LBT are Type1, type2 and Type3.Type1 is a channel listening mechanism based on back-off, type2 is one-shot LBT, 5us LBT is done within 8us, and Type3 is no LBT.

For the time sharing of channel occupation at the base station side, after the base station initiates the COT, the resources in the COT can be used for downlink transmission, and the resources in the COT can be shared for the terminal for uplink transmission. When resources in COT are shared to a terminal for uplink transmission, the channel access mode that the terminal can use is Type2A LBT,Type 2B LBT or Type2C LBT.

For the time sharing of channel occupation at the terminal side, after the terminal initiates the COT by using the Type1 LBT, resources in the COT can be used for uplink transmission, and resources in the COT can be shared to the base station for downlink transmission. In an NR-U system, the COT initiated by a base station sharing terminal includes two cases: one case is the COT of the base station sharing the scheduled PUSCH; another case is the COT of PUSCH where the base station shares a scheduling-free grant.

For the side link, the side link in the LTE system communicates based on broadcast, and may be used to support basic security class communications for the internet of vehicles (vehicle to everything, V2X), but is not applicable to other higher-level V2X services. The 5G NR system supports more advanced side link transmission designs, such as unicast, multicast or multicast, etc., so that more comprehensive service types can be supported. The side link communication system is shown in fig. 2.

The NR SL includes the following channels:

physical side link control channel (physical sidelink control channel, PSCCH); physical side link shared channel (physical sidelink shared channel, PSSCH); a physical side link broadcast channel (physical sidelink broadcast channel, PSBCH); physical side link feedback information (physical sidelink discovery feedback channel, PSFCH).

Wherein, PSSCH uses sub-channel as unit to allocate resource, and uses continuous resource allocation mode in frequency domain. The time domain resource of the PSCCH is the number of symbols configured by a high layer, the frequency domain size is a parameter configured by the high layer, the frequency domain resource size of the PSCCH is smaller than or equal to the size of one sub-channel, and the PSCCH is positioned in the range of the lowest sub-channel of the PSSCH. An example diagram is shown in fig. 3.

The NR V2X system supports a terminal to transmit a plurality of PSFCHs on one symbol. Maximum number of PSFCH transmissions N that allows a terminal to simultaneously transmit PSFCH is at most not more than a maximum PSFCH transmission number of higher layer configuration and/or terminal capability limit _max,PSFCH . The terminal correspondingly determines the number N of PSFCHs to be transmitted according to the number of PSSCHs which are received in a plurality of PSSCH time slots corresponding to the PSFCH time slots and need to carry out sidestream feedback _sch,PSFCH The terminal according to the maximum transmitting power P of the terminal _cmax The transmission power P of each PSFCH determined according to the power control rule _PSFCH,one ，N _max,PSFCH And N _sch,PSFCH Determining the number N of PSFCHs capable of being transmitted simultaneously _TX,PSFCH Namely, the procedure of the terminal executing the prioritized mapping procedure to obtain the PSFCH capable of being simultaneously transmitted is as follows:

case 1:

if N _sch,PSFCH <N _max,PSFCH And N _sch,PSFCH The total superimposed power of the PSFCH (i.e. N _scH,PSFCH P number _PSFCH,one ) Not exceeding P _cmax Then N _TX,PSFCH ＝N _sch,PSFCH The terminal transmits N _TX,PSFCH The PSFCH;

if N _sch,PSFCH <N _max,PSFCH ，N _sch,PSFCH The transmission power of each PSFCH exceeds P _cmax The terminal determines the minimum number N of PSFCH to be transmitted _min,PSFCH ，N _min,PSFCH For the maximum N value, satisfy N P _PSFCH,one Not exceeding P _cmax The terminal selects N according to the order of priority from high to low _TX,PSFCH The PSFCH sends N _TX,PSFCH At [ N ] _min,PSFCH ,N _sch,PSFCH ]Range.

Case 2:

if N _sch,PSFCH >N _max,PSFCH The terminal is in N according to the priority of PSFCH _sch,PSFCH N is selected from PSFCH according to the order of priority from high to low _max,PSFCH And PSFCH.

If N _max,PSFCH The total superimposed power of the PSFCH (i.e. N _max,PSFCH P number _PSFCH,one ) Not exceeding P _cmax Then N _TX,PSFCH ＝N _max,PSFCH The terminal transmits the selected N _max,PSFCH The PSFCH;

if N _max,PSFCH PSFCH ofTransmission power exceeding P _cmax The terminal determines the minimum number N of PSFCH to be transmitted _min,PSFCH ，N _min,PSFCH For the maximum N value, satisfy N P _PSFCH,one Not exceeding P _cmax The terminal selects N according to the order of priority from high to low _TX,PSFCH The PSFCH sends N _TX,PSFCH At [ N ] _min,PSFCH ,N _max,PSFCH ]Range.

In the case of unlicensed spectrum, how to select PSFCH for transmission is a technical problem to be solved.

SL transmission over unlicensed spectrum requires channel access to meet corresponding rules, such as Type1 LBT and Type2LBT. If the feedback of the PSFCH supports the channel access mode of the shared channel occupation for Type2LBT, the RX terminal can use the shared COT initiated by the TX terminal to feed back the PSFCH. The RX terminal needs to satisfy the COT sharing condition using the TX terminal initiated shared COT feedback PSFCH, e.g., the PSFCH transmitted by the RX terminal includes at least one PSFCH transmitted to the TX terminal. However, in the actual transmission process, there may be a case where the PSFCH transmitted to the TX terminal is discarded entirely, and at this time, the RX terminal cannot use the TX terminal initiated shared COT. The first terminal needs to ensure that at least one PSFCH satisfying the COT sharing condition is selected when determining PSFCHs that can be simultaneously transmitted.

The PSFCH sending method provided by the embodiment of the present application is described in detail below by means of some embodiments and application scenarios thereof with reference to the accompanying drawings.

Fig. 4 is a schematic flow chart of a PSFCH sending method provided in an embodiment of the present application. As shown in fig. 4, the method provided in this embodiment includes:

step 101, a first terminal determines M1 PSFCHs capable of being transmitted simultaneously; the M1 PSFCHs comprise at least one PSFCH meeting COT sharing conditions;

specifically, if the first terminal has multiple PSFCH feedback and it is assumed that the PSFCH performs Type 2LBT, in consideration of satisfying the COT sharing condition, if the PSFCH transmitted to the second terminal that initiates the sharing of the COT is discarded from among the PSFCHs that can be simultaneously transmitted determined by the first terminal, the first terminal cannot feed back the PSFCH using the COT initiated by the second terminal that initiates the sharing of the COT, and thus it is required to ensure that at least one PSFCH that satisfies the COT sharing condition, for example, is not discarded, for example, is transmitted to the second terminal that initiates the sharing of the COT, and thus M1 PSFCHs may include at least one PSFCH that satisfies the COT sharing condition, for example, to ensure that at least one PSFCH transmitted to the second terminal that initiates the sharing of the COT is not discarded when the first terminal determines the PSFCH that can be simultaneously transmitted.

Step 102, the first terminal sends M1 PSFCHs.

The M1 PSFCHs may be PSFCHs transmitted to one or more terminals.

In the method of the embodiment, a first terminal determines M1 PSFCHs capable of being simultaneously transmitted, and transmits the M1 PSFCHs; the M1 PSFCHs include at least one PSFCH that satisfies the COT sharing condition, that is, it may be ensured that at least one PSFCH that satisfies the sharing COT condition is not discarded when the first terminal determines the PSFCHs that can be simultaneously transmitted, thereby implementing a PSFCH transmission method for a shared spectrum.

Alternatively, M1 PSFCHs may be selected from the N1 PSFCHs, where the M1 PSFCHs are at least one PSFCH determined from the M2 PSFCHs that satisfies the COT sharing condition, and the M2 PSFCHs are at least one PSFCH determined from the N1 PSFCHs that can be simultaneously transmitted.

Specifically, the first terminal performs prioritization (prioritization) on N1 PSFCHs that need to be simultaneously transmitted, so as to obtain PSFCHs that can be simultaneously transmitted, where PSFCHs that meet the COT sharing condition in the PSFCHs that can be simultaneously transmitted are PSFCHs that can be simultaneously transmitted and meet the COT sharing condition, that is, the first terminal obtains M2 PSFCHs according to N1 PSFCHs, where M1 PSFCHs meet the COT sharing condition in the M2 PSFCHs, and then M1 PSFCHs are all PSFCHs that meet the COT sharing condition.

Alternatively, the M1 PSFCHs may be selected based on the N2 PSFCHs that satisfy the COT sharing condition among the N1 PSFCHs, that is, the selected M1 PSFCHs include at least one PSFCH that is determined from the N2 PSFCHs and can be simultaneously transmitted, for example, in the following manners:

mode one:

the M1 PSFCHs comprise M3 PFSCHs or M3 and M4 PFSCHs, wherein the M3 PSFCHs are at least one PSFCH which can be transmitted simultaneously and determined from the N2 PSFCHs, and the M4 PSFCHs are at least one PSFCH which can be transmitted simultaneously and determined from N1-M3 or N1-N2 PSFCHs which need to be transmitted in the rest; the N2 PSFCHs are PSFCHs satisfying the COT sharing condition, which are included in the N1 PSFCHs that need to be transmitted simultaneously.

Specifically, the first terminal performs priority on N2 PSFCHs that need to be sent simultaneously and meet the COT sharing condition, so as to obtain PSFCHs that can be sent simultaneously and meet the COT sharing condition, that is, the first terminal obtains M3 PSFCHs according to the N2 PSFCHs, where the M1 PSFCHs at least include M3 PSFCHs, so as to ensure that at least one PSFCH that meets the COT sharing condition can be sent.

Further, if the N2 PSFCHs are smaller than the maximum number of PSFCHs that the first terminal can simultaneously transmit, or the M3 PSFCHs are smaller than the maximum number of PSFCHs that the first terminal can simultaneously transmit and the total power of the M2 PSFCHs is smaller than the maximum transmission power of the first terminal, the first terminal may perform the prioritization on the remaining N1-M3 or N1-N2 PSFCHs that need to be transmitted to obtain remaining PSFCHs that can simultaneously transmit, that is, the first terminal obtains M4 PSFCHs according to the N1-M3 or N1-N2 PSFCHs, and the M1 PSFCHs include m3+m4 PSFCHs.

Mode two:

the M1 PSFCHs include M5 PFSCHs, or include M5 and M6 PFSCHs, wherein the M5 PSFCHs are at least one PSFCH capable of being simultaneously transmitted, which is determined from all PSFCHs with highest priority among the N2 PSFCHs, and the M6 PSFCHs are at least one PSFCH capable of being simultaneously transmitted, which is determined from N1-M5 or N1-N2 PSFCHs that need to be transmitted in the rest; the N2 PSFCHs are PSFCHs satisfying the COT sharing condition, which are included in the N1 PSFCHs that need to be transmitted simultaneously.

Specifically, the first terminal performs priority mapping on all PSFCHs with highest priority in the N2 PSFCHs that need to be sent simultaneously and meet the COT sharing condition, to obtain the PSFCH with highest priority that can be sent simultaneously and meet the COT sharing condition, that is, the first terminal obtains M5 PSFCHs according to the N2 PSFCHs, that is, all PSFCHs with highest priority in the N2 PSFCHs include: m5 PSFCHs can be transmitted simultaneously, and at least M5 PSFCHs are contained in the M1 PSFCHs so as to ensure that at least the PSFCH with the highest priority meeting the COT sharing condition can be transmitted.

Further, if the number of all PSFCHs with the highest priority in the N2 PSFCHs is smaller than the maximum number of PSFCHs that the first terminal can simultaneously transmit, or if the M5 PSFCHs are smaller than the maximum number of PSFCHs that the first terminal can simultaneously transmit and the total power of the M5 PSFCHs is smaller than the maximum transmission power of the first terminal, the first terminal may perform the prioritisation on the N1-M5 or N1-N2 PSFCHs that need to be transmitted again to obtain remaining PSFCHs that can simultaneously transmit, that is, the first terminal obtains M6 PSFCHs according to the N1-M5 or N1-N2 PSFCHs, and m5+m6 PSFCHs are included in the M1 PSFCHs.

Alternatively, the N1 PSFCHs may be PSFCHs that the first terminal needs to transmit simultaneously.

Optionally, the first terminal determines the PSFCH capable of being simultaneously transmitted according to the target information;

the target information includes at least one of:

the channel occupation time COT of the physical side link shared channel PSSCH corresponding to the PSFCH;

the number of delayed transmissions of the PSFCH;

the feedback type of PSSCH corresponding to PSFCH;

channel access priority class CAPC;

priority of PSFCH;

maximum PSFCH transmission number;

the remaining maximum PSFCH transmission number;

maximum PSFCH transmit power;

the maximum PSFCH transmit power remains.

For example, according to the COT where the PSSCH corresponding to the PSFCH is located, for example, PSFCH corresponding to the PSSCH in the current COT is preferentially selected; for example, PSFCH corresponding to PSSCH in the first COT, where the first COT is the last COT/the first N cobs of the current COT, and N is an integer greater than 1, may be preferentially selected.

For example, according to the delay transmission times of the PSFCH (delay transmission means that the PSFCH can be delayed to be transmitted at the next transmission opportunity due to LBT failure, for example), the PSFCH with the large delay transmission times is transmitted first, so that the PSFCH is prevented from being discarded, and the subsequent communication is prevented from being affected; PSFCH having a delayed transmission number greater than a first threshold may also be preferentially selected, for example.

The feedback types include NACK/ACK, NACK-ONLY, for example. According to the feedback type of PSSCH corresponding to PSFCH, M1 PSFCH which can be sent simultaneously are determined, for example PSFCH corresponding to PSSCH with feedback type NACK-ONLY can be selected preferentially.

For example, assuming that the PSFCH performs Type 1LBT and decides a cap using a corresponding PSFCH priority, the different PSFCHs correspond to different caps, and the terminal may determine PSFCHs that can be simultaneously transmitted according to the caps. For example, PSFCH with higher CAPC priority may be preferentially selected; PSFCH with a caps priority greater than the second threshold may also be preferentially selected, for example.

Here, schemes in the related art may be adopted based on the priority of the PSFCH, the maximum PSFCH transmission number/the remaining maximum PSFCH transmission number, the maximum PSFCH transmission power/the remaining maximum PSFCH transmission power, and the like, which are not limited in the present application.

The above-described modes may be combined in any manner, and for example, a PSFCH corresponding to a PSSCH having a feedback type of NACK only may be preferentially selected, and a PSFCH corresponding to a cap with a high priority may be selected.

The method of this embodiment determines, according to target information, PSFCH capable of being simultaneously transmitted, the target information including at least one of: COT where PSSCH corresponding to PSFCH is located; the number of delayed transmissions of the PSFCH; the feedback type of PSSCH corresponding to PSFCH; CAPC; priority of PSFCH; maximum PSFCH transmission number; the remaining maximum PSFCH transmission number; maximum PSFCH transmit power; the remaining maximum PSFCH transmission power may consider the priority of the PSFCH, the number of PSFCH transmissions, or the transmission power, and may also consider the influence of other parameters, such as the channel access related parameters, the COT where the PSSCH corresponding to the PSFCH is located, the delay transmission number of the PSFCH, or the influence of the cap, when selecting the PSFCH that can be transmitted simultaneously.

Alternatively, step 101 may be implemented by at least one of:

in case the first terminal detects the shared COT, the first terminal determines M1 PSFCHs that can be simultaneously transmitted.

Alternatively, the M1 PSFCHs may be obtained according to at least one of a priority of the PSFCHs, a maximum PSFCH transmission number/a remaining maximum PSFCH transmission number, and a maximum PSFCH transmission power/a remaining maximum PSFCH transmission power.

Optionally, the method further comprises:

the first terminal determines a shared COT to use from the detected at least one shared COT, the shared COT to use including one of:

at least one shared COT with highest priority;

at least one shared COT with the largest PSFCH number can be sent;

any one or more of the at least one shared COT;

among the at least one shared COT, the shared COT capable of transmitting the PSFCH having the highest priority.

Specifically, the first terminal detects L1 (L1 is an integer greater than 0) shared COTs, and the first terminal determines the shared COTs to be used according to at least one of:

the highest priority shared COT;

the shared COT with the largest PSFCH number can be sent;

using any one or more of the shared COTs, including using all of the shared COTs;

The shared COT of the highest priority PSFCH can be sent.

Alternatively, in the case that the target information includes the COT where the PSSCH corresponding to the PSFCH is located, determining the PSFCH capable of being simultaneously transmitted may be implemented in any of the following manners:

the first terminal preferentially selects PSFCH corresponding to PSSCH in the current COT;

the first terminal preferentially selects PSFCH corresponding to PSSCH in the first COT; the first COT is the COT preceding the current COT or the first N COTs, and N is an integer greater than 1.

Specifically, when selecting PSFCH that can be simultaneously transmitted, PSFCH may be selected according to the COT where the PSSCH corresponding to the PSFCH is located, for example, the PSFCH corresponding to the PSSCH in the current COT is preferentially selected; optionally, the M1 PSFCHs may include, for example, a PSFCH corresponding to a PSSCH in the current COT, or a PSFCH not corresponding to a PSSCH in the current COT, but a PSFCH with a larger delay transmission number or a higher priority, which is not limited in the embodiment of the present application;

or, the PSFCH corresponding to the PSSCH in the first COT before the current COT is preferentially selected.

In the above embodiment, the PSFCH may not be sent due to the LBT failure, so that the transmission is delayed until the next PSFCH timing is sent, so that the PSFCH corresponding to the PSSCH in the previous COT may be preferentially sent, and the PSFCH corresponding to the PSSCH in the previous COT is prevented from exceeding the limit of the packet delay budget (Packet Delay Budget, PDB).

Alternatively, in the case where the target information includes the delayed transmission times of the PSFCH, determining the PSFCH capable of simultaneous transmission may be achieved by any one of the following means:

the first terminal preferentially selects PSFCH with large delay transmission times;

the first terminal preferentially selects a PSFCH whose delayed transmission times are greater than a first threshold.

Specifically, the first terminal may determine the PSFCHs that can be simultaneously transmitted according to the number of delayed transmission times of the PSFCHs, and preferably select the PSFCH with the large number of delayed transmission times, for example, select the first at least one PSFCH with the large number of delayed transmission times, and may preferably transmit the PSFCH with the delayed PSFCH, thereby improving communication reliability; or, the PSFCH whose delayed transmission number is greater than the first threshold is preferentially selected, that is, at least one PSFCH whose delayed transmission number is greater than the first threshold is selected.

Alternatively, in the case that the target information includes the feedback type of the PSSCH corresponding to the PSFCH, determining the PSFCH capable of being simultaneously transmitted may be implemented in any of the following manners:

the first terminal preferentially selects the PSFCH corresponding to the PSSCH with the feedback type being NACK only.

Specifically, the first terminal may determine the PSFCH that is transmitted simultaneously according to the feedback type of the PSFCH, for example, preferentially select the PSFCH corresponding to the PSSCH with the feedback type of NACK-ONLY. If the feedback type is NACK-ONLY, the receiving end does not receive the feedback, and the receiving end considers the feedback of the PSSCH sent to be ACK, so if the first terminal wants NACK, but the channel access fails, the feedback is also regarded as ACK. Therefore, when there is an opportunity to transmit the PSFCH, the PSFCH is preferentially transmitted, so that the occurrence of the condition that the PSFCH is regarded as an ACK due to NACK transmission failure can be avoided.

Alternatively, in the case where the target information includes a cap, determining the PSFCH capable of simultaneous transmission may be achieved by any one of the following means:

the first terminal preferentially selects PSFCH with high priority corresponding to the CAPC;

the first terminal preferentially selects PSFCH with priority greater than a second threshold corresponding to CAPC.

Specifically, the first terminal selects PSFCHs that can be simultaneously transmitted according to a parameter related to channel access, for example, a CAPC, and may preferentially select a PSFCH with a higher priority corresponding to the CAPC, for example, select at least one previous PSFCH with a higher priority corresponding to the CAPC, or preferentially select a PSFCH with a priority corresponding to the CAPC that is greater than the second threshold.

In the above embodiment, when determining the number of PSFCHs that can be simultaneously transmitted, the terminal considers some parameters related to channel access, for example, the current COT where the PSSCH corresponding to the cape, the PSFCH is located, the number of delayed transmissions of the PSFCH, and so on, so as to implement transmission on the unlicensed spectrum.

For example, if the first terminal has multiple PSFCH feedback and it is assumed that the PSFCH performs Type 2LBT, considering that the COT sharing condition is satisfied, if the PSFCH transmitted to the second terminal that initiates the sharing COT is discarded from among the PSFCHs that can be simultaneously transmitted determined by the first terminal, the first terminal cannot feed back the PSFCH using the COT initiated by the second terminal that initiates the sharing COT, and thus it is required to ensure that at least one PSFCH transmitted to the second terminal that initiates the sharing COT is not discarded, and thus it is possible to raise the priority of the PSFCH transmitted to the second terminal that initiates the sharing COT, and ensure that at least one PSFCH transmitted to the second terminal that initiates the sharing COT is not discarded when the PSFCH that can be simultaneously transmitted is determined by the first terminal. Optionally, the priority of the N2 PSFCHs satisfying the COT sharing condition satisfies at least one of:

The priority of the PSFCH with the highest priority in the N2 PSFCHs is the highest priority in the N1 PSFCHs, and the priority of the rest PSFCHs in the N2 PSFCHs is the same as the priority of the PSSCH corresponding to the PSFCH;

the priority of at least one PSFCH in the N2 PSFCHs is the highest priority in the N1 PSFCHs, and the priority of the rest PSFCHs in the N2 PSFCHs is the same as the priority of the PSSCH corresponding to the PSFCH;

the priorities of the N2 PSFCHs are the highest priority among the N1 PSFCHs.

Among the N2 PSFCHs, the PSFCH with the highest priority may be one or more.

Specifically, if N1 PSFCHs that need to be simultaneously transmitted include N2 PSFCHs that satisfy the COT sharing condition, the terminal that initiates the COT sharing is a second terminal, and the priority of the N2 PSFCHs that satisfy the COT sharing condition may, for example, set the priority of at least one PSFCH with the highest priority to the highest priority; alternatively, the priority of any at least one PSFCH in the PSFCHs satisfying the COT sharing condition may be set to the highest priority, or the priorities of all the N2 PSFCHs may be set to the highest priority, and the priorities of the remaining PSFCHs remain unchanged and remain the priorities of the PSSCHs corresponding to each other, where the highest priority may be the highest priority in the priorities of the N1 PSFCHs, or may be a specific priority value, for example, the priority value from 0 to 7,0 indicates the highest priority, for example, the specific priority value is 0, and finally, if at least one PSFCH in the N2 PSFCHs is the highest priority PSFCH in the N1 PSFCHs, and further if the PSFCHs transmitted according to the priorities of the PSFCHs are selected, it may be ensured that at least one PSFCH transmitted to the second terminal is not discarded, and the first terminal may use the shared fct initiated by the second terminal to transmit the PSFCH.

Optionally, satisfying the COT sharing condition includes at least one of:

the second terminal initiating the sharing COT is a receiving end of the PSFCH;

the second terminal initiating the sharing COT is in the same multicast with the first terminal, and the sharing COT is used for the second terminal to send multicast information;

the sharing COT is used for the second terminal to send the broadcast information;

the first terminal receives first indication information sent by a second terminal initiating sharing COT, wherein the first indication information is used for indicating the first terminal to send PSFCH by using the sharing COT; optionally, the first indication information is carried by a PSCCH or a PSSCH;

the first terminal sends PSFCH by using COT where SCI demodulated by the first terminal is located;

the sharing COT is used for the second terminal to send feedback information; optionally, the feedback information is carried by the PSFCH;

the priorities corresponding to the CAPCs of the PSFCH are greater than the priorities corresponding to the CAPCs of the shared COT.

Illustratively, as shown in fig. 5, in the unicast case, the second terminal that initiates the sharing of the COT is the receiving end of the first terminal that sends the PSFCH; under the multicast condition, a second terminal initiating sharing COT is in the same multicast with the first terminal, and the sharing COT is used for the second terminal to send multicast information; under the condition of broadcasting, the shared COT is used for a second terminal to send broadcasting information, and if the second terminal is the terminal initiating the shared COT, PSFCH sent by the shared COT is used for meeting COT sharing conditions;

Or, the first indication information indicates that the first terminal may transmit the PSFCH using the shared COT; the sharing COT is initiated by the second terminal, and the first terminal uses PSFCH sent by the sharing COT to meet COT sharing conditions;

or, the first terminal may transmit the PSFCH using the COT where the SCI it demodulates is located, and the PSFCH transmitted using the COT where the SCI is located satisfies the COT sharing condition.

Or, the shared COT is used for the second terminal to send feedback information, the shared COT is initiated by the second terminal, and the PSFCH (sent by the first terminal) sent by the shared COT meets the COT sharing condition;

or, if the priority corresponding to the cap of the PSFCH is greater than the priority corresponding to the cap of the sharing COT, the PSFCH satisfies the COT sharing condition, and the PSFCH may use the sharing COT for transmission.

In the above embodiment, in the case that N2 PSFCHs satisfying the COT sharing condition are included in the N1 PSFCHs, the priority of at least one PSFCH of the N2 PSFCHs satisfying the COT sharing condition is the highest priority, so that the transmitted PSFCH may be selected based on the priority of the PSFCH, that is, it may be ensured that at least one PSFCH transmitted to the second terminal is not discarded, and further, the first terminal may use the shared COT initiated by the second terminal to transmit the PSFCH, thereby improving the resource utilization rate.

Alternatively, step 102 may be implemented as follows:

the terminal determines to use the shared COT to simultaneously transmit M1 PSFCHs according to at least one of:

in the case that at least one PSFCH satisfying the COT sharing condition exists in the M1 PSFCHs, the first terminal transmits the M1 PSFCHs by using the sharing COT;

as shown in fig. 6, in case there is at least one PSFCH satisfying the target condition, the first terminal transmits M1 PSFCHs using the shared COT; the M1 PSFCHs do not include the PSFCHs sent to the second terminal that initiated the shared COT;

in case that the M1 PSFCHs are within a duration range of the shared COT, the first terminal transmits the M1 PSFCHs using the shared COT;

the target condition includes at least one of: the feedback type is NACK only, the feedback value is ACK, and the COT sharing condition is met.

Specifically, after the first terminal selects M1 PSFCHs from the N1 PSFCHs, the first terminal determines whether the M1 PSFCHs can be simultaneously transmitted using the shared COT according to at least one of whether the PSFCHs transmitted to the second terminal are all discarded to determine whether to use the shared COT.

If at least one PSFCH satisfying the COT sharing condition (e.g., transmitted to the second terminal) exists among the M1 PSFCHs, the first terminal transmits the M1 PSFCHs using the sharing COT; otherwise, the first terminal does not use the shared COT to transmit M1 PSFCHs.

If the first terminal has at least one PSFCH that satisfies the following condition, where the first terminal does not send the PSFCH to the second terminal that initiates the shared COT, the first terminal may send M1 PSFCHs using the shared COT, i.e., the M1 PSFCHs do not include the PSFCHs sent to the second terminal that initiates the shared COT, e.g., the M1 PSFCHs are the PSFCHs sent to the third terminal, which may be one or more terminals:

the feedback type is NACK-ONLY, the feedback value is ACK, or COT sharing conditions are met (for example, the feedback value is sent to the second terminal);

the first terminal sends M1 PSFCHs by using the shared COT if the M1 PSFCHs are in the duration range of the shared COT; otherwise, the first terminal does not use the shared COT to transmit M1 PSFCHs.

Optionally, the method further comprises:

in the case that the first terminal does not transmit the M1 PSFCHs using a shared COT, the first terminal performs at least one of:

discarding M1 PSFCHs;

discarding N1 PSFCHs;

and executing the Type1 LBT, and if the Type1 LBT is executed successfully, sending M1 PSFCHs.

Specifically, if the first terminal does not transmit M1 PSFCHs using the shared COT, the first terminal performs at least one of the following actions:

M1 PSFCHs are discarded, N1 PSFCHs to be transmitted are discarded, or Type1 LBT is executed, and if the Type1 LBT is successful, M1 PSFCHs are transmitted.

In the above embodiment, when at least one PSFCH satisfying the COT sharing condition exists in the M1 PSFCHs, at least one PSFCH satisfying the target condition exists, and the M1 PSFCHs are within the duration range of the sharing COT, the M1 PSFCHs may be transmitted using the sharing COT, and the resource utilization may be improved.

Illustratively, the first terminal needs to send N1 PSFCHs simultaneously, where the N1 PSFCHs include N2 PSFCHs that satisfy the COT sharing condition, and one of the satisfying COT sharing conditions is that the receiving end of the PSFCH is the second terminal that initiates the COT.

Alternatively, the priority of N2 PSFCHs satisfying the COT sharing condition may be determined according to any one of:

a) The priority of at least one PSFCH with the highest priority among the N2 PSFCHs meeting the COT sharing condition is the highest priority, and the priorities of the PSFCHs meeting the COT sharing condition are the same as the priorities of the PSSCHs corresponding to the PSFCHs;

b) The priority of at least one PSFCH meeting the COT sharing condition is the highest priority, and the priorities of the rest PSFCHs meeting the COT sharing condition are the same as the priorities of the corresponding PSSCHs;

c) The priorities of N2 PSFCHs meeting COT sharing conditions are the highest priority;

the first terminal determines M1 PSFCHs that can be simultaneously transmitted from the N2 PSFCHs in the following manner (i.e., the first terminal, according to the priorities of the PSFCHs, the maximum PSFCH transmission number, and the maximum PSFCH transmission power):

if N2<N _max,PSFCH And the total superposition power of N2 PSFCHs does not exceed P _cmax M1=n2, and the first terminal transmits N2 PSFCHs;

if N2<N _max,PSFCH The transmit power of N2 PSFCHs exceeds P _cmax The first terminal determines the minimum number N of PSFCH to be transmitted _min,PSFCH ，N _min,PSFCH For the maximum N value, satisfy N P _PSFCH,one Not exceeding P _cmax The first terminal selects M1 PSFCHs from N2 PSFCHs according to the order of priority from high to low for transmission, and M1 is in [ N ] _min,PSFCH ,N2]Range.

If N2>N _max,PSFCH The first terminal selects N from N2 PSFCHs according to the priority of the PSFCH from high to low _max,PSFCH And PSFCH.

If N _max,PSFCH The total superimposed power of the PSFCH (i.e. N _max,PSFCH P number _PSFCH,one ) Not exceeding P _cmax M1=n _max,PSFCH The first terminal transmits the selected N _max,PSFCH The PSFCH;

if N _max,PSFCH The transmission power of each PSFCH exceeds P _cmax The first terminal determines the minimum number N of PSFCH to be transmitted _min,PSFCH ，N _min,PSFCH For the maximum N value, satisfy N P _PSFCH,one Not exceeding P _cmax The first terminal selects M1 PSFCHs to transmit according to the order of priority from high to low, M1 is in [ N ] _min,PSFCH ,N _max,PSFCH ]Range.

Or the first terminal determines M1 PSFCHs capable of simultaneously transmitting from the N2 PSFCHs according to the following manner:

if N2<N _max,PSFCH The transmit power of N2 PSFCHs exceeds P _cmax The first terminal determines the minimum number N of PSFCH to be transmitted _min,PSFCH ，N _min,PSFCH For the maximum N value, satisfy N P _PSFCH,one Not exceeding P _cmax The first terminal selects M1 PSFCHs satisfying at least one of the following among the N2 PSFCHs, M1 being [ N ] _min,PSFCH ,N2]The range is as follows:

preferentially selecting PSFCH corresponding to PSSCH in the current COT;

preferentially selecting PSFCH with large delay transmission times;

preferentially selecting PSFCH corresponding to PSSCH with NACK-ONLY transmission type;

in order of priority from high to low.

If N2>N _max,PSFCH The first terminal selects N satisfying at least one of the following among N2 PSFCHs according to the priority of the PSFCH _max,PSFCH The PSFCH:

preferentially selecting PSFCH corresponding to PSSCH in the current COT;

preferentially selecting PSFCH with large delay transmission times;

in order of priority from high to low.

if N _max,PSFCH The transmission power of each PSFCH exceeds P _cmax The first terminal determines the minimum number N of PSFCH to be transmitted _min,PSFCH ，N _min,PSFCH For the maximum N value, satisfy N P _PSFCH,one Not exceeding P _cmax The first terminal is at N _max,PSFCH M1 PSFCHs satisfying at least one of the following are selected from the PSFCHs, M1 being [ N ] _min,PSFCH ,N _max,PSFCH ]The range is as follows:

preferentially selecting PSFCH corresponding to PSSCH in the current COT;

preferentially selecting PSFCH with large delay transmission times;

in order of priority from high to low.

It can be seen that, the first terminal determines that M1 PSFCHs actually transmitted simultaneously are selected from N2 PSFCHs meeting the COT sharing condition according to the order of priority from high to low, so that at least one PSFCH meeting the COT sharing condition can be ensured not to be discarded, and the first terminal can transmit the PSFCH using the sharing COT initiated by the second terminal.

Illustratively, after determining the M1 PSFCHs that can be simultaneously transmitted, the first terminal determines whether to simultaneously transmit the M1 PSFCHs using the second terminal-initiated shared COT according to at least one of:

if at least one PSFCH meeting the COT sharing condition exists in the M1 PSFCHs, and one of the conditions meeting the COT sharing is that the receiving end of the PSFCH is a second terminal initiating sharing COT, the first terminal sends the M1 PSFCHs by using the sharing COT; otherwise, the first terminal does not use the shared COT to transmit M1 PSFCHs.

If the first terminal has at least one PSFCH with a feedback type of NACK-ONLY, a feedback value of ACK and meeting the COT sharing condition, the first terminal does not send the PSFCH to the second terminal, but the first terminal can send M1 PSFCHs by using the sharing COT, namely, the M1 PSFCHs do not comprise the PSFCH sent to the second terminal;

if the M1 PSFCHs are within the duration range of the COT, the first terminal transmits the M1 PSFCHs using the shared COT; otherwise, the first terminal does not use the shared COT to transmit M1 PSFCHs.

Optionally, the M2 PSFCHs that can be simultaneously transmitted are determined from the N1 PSFCHs, and the above several manners may also be adopted, which are not described herein.

For example, the first terminal needs to send N1 PSFCHs simultaneously, where N1 PSFCHs include N2 PSFCHs that satisfy the COT sharing condition, and the first terminal determines M1 PSFCHs, where M1 PSFCHs are PSFCHs that can be sent simultaneously, according to the following rule, where M1 PSFCHs include at least one PSFCH that satisfies the COT sharing condition:

the first terminal determines M3 PSFCHs that can be simultaneously transmitted from among the N2 PSFCHs according to the following manner:

if N2<N _max,PSFCH And the total superposition power of N2 PSFCHs does not exceed P _cmax M3=n2;

if N2<N _max,PSFCH The transmit power of N2 PSFCHs exceeds P _cmax The first terminal determines the minimum number N of PSFCH to be transmitted _min,PSFCH ，N _min,PSFCH For the maximum N value, satisfy N P _PSFCH,one Not exceeding P _cmax The first terminal selects M3 PSFCHs in the order of priority from high to low in N2 PSFCHs, M3 is [ N ] _min,PSFCH ,N2]Range.

If N _max,PSFCH The total superimposed power of the PSFCH (i.e. N _max,PSFCH P number _PSFCH,one ) Not exceeding P _cmax M3=n _max,PSFCH ；

If N _max,PSFCH The transmission power of each PSFCH exceeds P _cmax The first terminal determines the minimum number N of PSFCH to be transmitted _min,PSFCH ，N _min,PSFCH For the maximum N value, satisfy N P _PSFCH,one Not exceeding P _cmax The first terminal selects M3 PSFCHs according to the order of priority from high to low, M3 is in [ N ] _min,PSFCH ,N _max,PSFCH ]Range.

The first terminal determines M4 PSFCHs capable of being transmitted simultaneously from N1-M3 PSFCHs which are required to be transmitted in the rest:

if N1-M3<N _max,PSFCH ′(N′ _max,PSFCH Transmitting number for remaining maximum PSFCH) And the total superimposed power of N1-M3 PSFCHs does not exceed P _cmax ′(P _cmax ' is the remaining maximum transmit power), m4=n1-M3;

if N1-M3<N _max,PSFCH ' the transmission power of N1-M3 PSFCHs exceeds P _cmax ' the first terminal determines the minimum number N of transmitted PSFCHs _min,PSFCH ′，N _min,PSFCH ' is the maximum N ' value, satisfies N ' P _PSFCH,one Not exceeding P _cmax ' the first terminal selects M4 PSFCHs in order of priority from high to low among N1-M3 PSFCHs, M4 being [ N ] _min,PSFCH ′,N1-M3]Range.

If N1-M3>N _max,PSFCH ' the first terminal selects N from N1-M3 PSFCHs according to the priority of the PSFCH from high to low _max,PSFCH ' PSFCH.

If N _max,PSFCH The total superimposed power of the PSFCH does not exceed P _cmax ' then m4=n _max,PSFCH ′；

If N _max,PSFCH ' the transmit power of PSFCH exceeds P _cmax ' the first terminal determines the minimum number N of transmitted PSFCHs _min,PSFCH ′，N _min,PSFCH ' is the maximum N ' value, satisfies N ' P _PSFCH,one Not exceeding P _cmax ' the first terminal selects M4 PSFCHs in order of priority from high to low, M4 being in [ N ] _min,PSFCH ,N _max,PSFCH ′]Range.

The M1 PSFCHs determined by the first terminal are M3 PSFCHs and M4 PSFCHs.

Or alternatively, the first and second heat exchangers may be,

if N2<N _max,PSFCH The transmit power of N2 PSFCHs exceeds P _cmax The first terminal determines the minimum number N of PSFCH to be transmitted _min,PSFCH ，N _min,PSFCH For the maximum N value, satisfy N P _PSFCH,one Not exceeding P _cmax The first terminal selects M3 PSFCHs satisfying at least one of the following among the N2 PSFCHs, M3 being [ N ] _min,PSFCH ,N2]The range is as follows:

preferentially selecting PSFCH corresponding to PSSCH in the current COT;

preferentially selecting PSFCH with large delay transmission times;

preferentially selecting PSFCH corresponding to PSSCH with feedback type of NACK-ONLY;

In order of priority from high to low.

If N2>N _max,PSFCH The terminal selects N satisfying at least one of the following among N2 PSFCHs according to the priority of the PSFCH _max,PSFCH The PSFCH:

preferentially selecting PSFCH corresponding to PSSCH in the current COT;

preferentially selecting PSFCH with large delay transmission times;

in order of priority from high to low.

If N _max,PSFCH The transmission power of each PSFCH exceeds P _cmax The first terminal determines the minimum number N of PSFCH to be transmitted _min,PSFCH ，N _min,PSFCH For the maximum N value, satisfy N P _PSFCH,one Not exceeding P _cmax The first terminal is at N _max,PSFCH The PSFCH selects M3 PSFCH which satisfies at least one of the following, M3 is [ N ] _min,PSFCH ,N _max,PSFCH ]The range is as follows:

preferentially selecting PSFCH corresponding to PSSCH in the current COT;

preferentially selecting PSFCH with large delay transmission times;

in order of priority from high to low.

The first terminal determines M4 PSFCHs capable of being transmitted simultaneously from N1-M3 PSFCHs which are required to be transmitted

If N1-M3<N _max,PSFCH ′(N′ _max,PSFCH For the remaining maximum number of PSFCH transmissions), and the total sum power of N1-M3 PSFCHs does not exceed P _cmax ′(P _cmax ' is the remaining maximum transmit power), m4=n1-M3;

If N1-M3<N _max,PSFCH ' the transmission power of N1-M3 PSFCHs exceeds P _cmax ' the first terminal determines the minimum number N of transmitted PSFCHs _min,PSFCH ′，N _min,PSFCH ' is the maximum N ' value, satisfies N ' P _PSFCH,one Not exceeding P _cmax ' the first terminal selects M4 PSFCHs satisfying at least one of the following among N1-M3 PSFCHs, M4 being [ N ] _min,PSFCH ′,N1-M3]Range.

Preferentially selecting PSFCH corresponding to PSSCH in the current COT;

preferentially selecting PSFCH with large delay transmission times;

in order of priority from high to low.

If N1-M3>N _max,PSFCH ' the terminal selects N satisfying at least one of the following among the N1-M3 PSFCHs _max,PSFCH ' PSFCH:

preferentially selecting PSFCH corresponding to PSSCH in the current COT;

preferentially selecting PSFCH with large delay transmission times;

in order of priority from high to low.

If N _max,PsFCH ' the transmit power of PSFCH exceeds P _cmax ' the first terminal determines the minimum number N of transmitted PSFCHs _min,PSFCH ′，N _min,PSFCH ' is the maximum N ' value, satisfies N ' P _PSFCH,one Not exceeding P _cmax ' the terminal selects M4 PSFCHs satisfying at least one of M4 in [ N _min,PSFCH ,N _max,PSFCH ′]Range.

Preferentially selecting PSFCH corresponding to PSSCH in the current COT;

preferentially selecting PSFCH with large delay transmission times;

in order of priority from high to low.

The M1 PSFCHs determined by the first terminal are M3 PSFCHs and M4 PSFCHs.

According to the PSFCH sending method provided by the embodiment of the application, the execution body can be a PSFCH sending device. In the embodiment of the present application, a PSFCH transmitting apparatus executes a PSFCH transmitting method as an example, and the PSFCH transmitting apparatus provided in the embodiment of the present application is described.

Fig. 7 is a schematic structural diagram of a PSFCH sending apparatus according to an embodiment of the present application. As shown in fig. 7, the PSFCH sending apparatus provided in this embodiment includes:

a processing module 210, configured to determine M1 PSFCHs that can be sent simultaneously; the M1 PSFCHs comprise at least one PSFCH meeting COT sharing conditions;

a sending module 220, configured to send the M1 PSFCHs.

Optionally, in a case that the first terminal determines M1 PSFCHs according to the N1 PSFCHs, the M1 PSFCHs are at least one PSFCH that satisfies the COT sharing condition and is determined from the M2 PSFCHs, where the M2 PSFCHs are at least one PSFCH that is determined from the N1 PSFCHs and can be simultaneously transmitted.

Optionally, in the case that the first terminal determines M1 PSFCHs according to the N2 PSFCHs, the M1 PSFCHs include M3 PFSCHs, or include M3 and M4 PFSCHs, where the M3 PSFCHs are at least one PSFCH that can be simultaneously transmitted and determined from the N2 PSFCHs, and the M4 PSFCHs are at least one PSFCH that can be simultaneously transmitted and determined from N1-M3 or N1-N2 PSFCHs that need to be transmitted; the N2 PSFCHs are PSFCHs satisfying the COT sharing condition, which are included in the N1 PSFCHs that need to be transmitted simultaneously.

Optionally, in the case that the first terminal determines M1 PSFCHs according to the N2 PSFCHs, the M1 PSFCHs include M5 PFSCHs, or include M5 and M6 PFSCHs, where the M5 PSFCHs are at least one PSFCH that can be simultaneously transmitted and determined from all PSFCHs with highest priorities among the N2 PSFCHs, and the M6 PSFCHs are at least one PSFCH that can be simultaneously transmitted and determined from N1-M5 or N1-N2 PSFCHs that need to be transmitted; the N2 PSFCHs are PSFCHs satisfying the COT sharing condition, which are included in the N1 PSFCHs that need to be transmitted simultaneously.

Optionally, in the case that the M1 PSFCHs include M3 and M4 PFSCHs, the M4 PFSCHs are determined by the first terminal from N1-M3 or N1-N2 PSFCHs that need to be transmitted if a first condition is satisfied, where the first condition includes: the N2 PSFCHs are smaller than the maximum number of PSFCHs that the first terminal can simultaneously transmit, or the M3 PSFCHs are smaller than the maximum number of PSFCHs that the first terminal can simultaneously transmit and the total power of the M2 PSFCHs is smaller than the maximum transmit power of the first terminal.

Optionally, in the case that the M1 PSFCHs include M5 and M6 PFSCHs, the first terminal determines from N1-M5 or N1-N2 PSFCHs that need to be transmitted if the M5 PFSCHs satisfy a second condition, where the second condition includes: the number of all PSFCHs with highest priority in the N2 PSFCHs is smaller than the maximum number of PSFCHs which can be simultaneously transmitted by the first terminal, or the M5 PSFCHs are smaller than the maximum number of PSFCHs which can be simultaneously transmitted by the first terminal and the total power of the M5 PSFCHs is smaller than the maximum transmission power of the first terminal.

Optionally, the meeting the COT sharing condition includes at least one of:

the second terminal initiating the sharing COT is a receiving end of the PSFCH;

the shared COT is used for sending broadcast information by the second terminal initiating the shared COT;

the first terminal receives first indication information sent by a second terminal initiating sharing COT, wherein the first indication information is used for indicating the first terminal to send PSFCH by using the sharing COT;

The shared COT is used for sending feedback information by the second terminal initiating the shared COT;

the priority corresponding to the CAPC of the PSFCH is greater than the priority corresponding to the CAPC of the shared COT.

Optionally, the first indication information is carried by a PSCCH or a PSSCH; and/or the number of the groups of groups,

the feedback information is carried by the PSFCH.

Optionally, the processing module 210 is specifically configured to:

and in the case that the first terminal detects the shared COT, determining M1 PSFCHs capable of being transmitted simultaneously.

Optionally, the processing module 210 is further configured to:

determining a used shared COT from the detected at least one shared COT, the used shared COT comprising one of:

the highest priority shared COT in the at least one shared COT;

the sharing COT with the largest PSFCH number can be sent in the at least one sharing COT;

any one or more of the at least one shared COT;

and the at least one shared COT can send the PSFCH with the highest priority.

Optionally, in the case that N2 PSFCHs satisfying the COT sharing condition are included in the N1 PSFCHs, the priority of the N2 PSFCHs satisfying the COT sharing condition satisfies at least one of the following:

The priority of at least one PSFCH in the N2 PSFCHs is the highest priority in the N1 PSFCHs, and the priority of the rest PSFCHs in the N2 PSFCHs is the same as the priority of the corresponding PSSCH;

the priorities of the N2 PSFCHs are the highest priority of the N1 PSFCHs.

Optionally, the sending module 220 is specifically configured to:

determining to transmit the M1 PSFCHs simultaneously using a shared COT according to at least one of:

in the case that at least one PSFCH satisfying the COT sharing condition exists among the M1 PSFCHs, transmitting the M1 PSFCHs using the sharing COT;

transmitting the M1 PSFCHs using a shared COT in the presence of at least one PSFCH satisfying a target condition; the M1 PSFCHs do not include PSFCHs sent to the second terminal that initiated the shared COT;

in case that M1 PSFCHs are within a duration range of the shared COT, transmitting the M1 PSFCHs using the shared COT;

Optionally, the processing module 210 is further configured to:

in the case that the M1 PSFCHs are not transmitted using the shared COT, at least one of the following is performed:

discarding M1 PSFCHs;

Discarding N1 PSFCHs;

and executing Type1 LBT, and if the Type1 LBT is executed successfully, transmitting module 220 is configured to transmit M1 PSFCHs.

Optionally, the processing module 210 is further configured to:

determining PSFCH capable of being transmitted simultaneously according to the target information;

the target information includes at least one of:

the number of delayed transmissions of the PSFCH;

the feedback type of PSSCH corresponding to PSFCH;

channel access priority class CAPC;

priority of PSFCH;

maximum PSFCH transmission number;

the remaining maximum PSFCH transmission number;

maximum PSFCH transmit power;

the maximum PSFCH transmit power remains.

Optionally, in the case that the target information includes the COT where the PSSCH corresponding to the PSFCH is located, the processing module 210 is specifically configured to perform one of the following:

preferentially selecting PSFCH corresponding to PSSCH in the current COT;

preferentially selecting PSFCH corresponding to PSSCH in the first COT; the first COT is the previous COT or the previous N COTs of the current COT, and the N is an integer larger than 1.

Optionally, in the case that the target information includes the delayed transmission times of the PSFCH, the processing module 210 is specifically configured to perform one of the following:

Preferentially selecting PSFCH with large delay transmission times;

the PSFCH whose number of delayed transmissions is greater than a first threshold is preferentially selected.

Optionally, in the case that the target information includes a feedback type of the PSSCH corresponding to the PSFCH, the processing module 210 is specifically configured to:

and preferentially selecting PSFCH corresponding to the PSSCH with the feedback type being NACK only.

Optionally, in the case that the target information includes the CAPC, the processing module 210 is specifically configured to perform one of:

preferentially selecting PSFCH with high priority corresponding to CAPC;

and preferentially selecting PSFCH with the priority level larger than a second threshold value corresponding to the CAPC.

The apparatus of the present embodiment may be used to execute the method of any one of the foregoing terminal side method embodiments, and specific implementation procedures and technical effects of the apparatus are the same as those in the terminal side method embodiment, and specific details of the terminal side method embodiment may be referred to in the detailed description of the terminal side method embodiment and will not be repeated herein.

The PSFCH sending device in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

The PSFCH sending device provided in the embodiment of the present application can implement each process implemented by the method embodiments of fig. N to n+x, and achieve the same technical effect, so that repetition is avoided, and no further description is given here.

Optionally, as shown in fig. 8, the embodiment of the present application further provides a communication device 800, including a processor 801 and a memory 802, where a program or an instruction that can be executed on the processor 801 is stored in the memory 802, and when the communication device 800 is a terminal, for example, the program or the instruction is executed by the processor 801, to implement each step of the above-mentioned embodiment of the PSFCH sending method, and the same technical effects can be achieved. When the communication device 800 is a second terminal, the program or the instruction, when executed by the processor 801, implements the steps of the foregoing PSFCH sending method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides a first terminal, which comprises a processor and a communication interface, wherein the processor is used for determining M1 PSFCHs capable of being transmitted simultaneously; the M1 PSFCHs comprise at least one PSFCH meeting COT sharing conditions; the communication interface is configured to send the M1 PSFCHs. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 9 is a schematic hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 1000 includes, but is not limited to: at least some of the components of the radio frequency unit 1001, the network module 1002, the audio output unit 1003, the input unit 1004, the sensor 1005, the display unit 1006, the user input unit 1007, the interface unit 1008, the memory 1009, and the processor 1010, etc.

Those skilled in the art will appreciate that terminal 1000 can also include a power source (e.g., a battery) for powering the various components, which can be logically connected to processor 1010 by a power management system so as to perform functions such as managing charge, discharge, and power consumption by the power management system. The terminal structure shown in fig. 9 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine some components, or may be arranged in different components, which will not be described in detail herein.

It should be understood that in the embodiment of the present application, the input unit 1004 may include a graphics processing unit (Graphics Processing Unit, GPU) 10041 and a microphone 10042, and the graphics processor 10041 processes image data of still pictures or videos obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1007 includes at least one of a touch panel 10071 and other input devices 10072. The touch panel 10071 is also referred to as a touch screen. The touch panel 10071 can include two portions, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In this embodiment, after receiving downlink data from the network side device, the radio frequency unit 1001 may transmit the downlink data to the processor 1010 for processing; in addition, the radio frequency unit 1001 may send uplink data to the network side device. In general, the radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 1009 may be used to store software programs or instructions and various data. The memory 1009 may mainly include a first storage area storing programs or instructions, which may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and a second storage area storing data. Further, the memory 1009 may include volatile memory or nonvolatile memory, or the memory 1009 may include both volatile and nonvolatile memory. Including high-speed random access Memory, and may also include non-volatile Memory, where the non-volatile Memory may be Read-Only Memory (ROM), programmable ROM (PROM), erasable Programmable ROM (EPROM), electrically Erasable Programmable EPROM (EEPROM), or flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). The memory 1009 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.

The processor 1010 may include one or more processing units; alternatively, the processor 1010 may integrate an application processor that primarily processes operations involving an operating system, a user interface, and applications or instructions, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1010.

Wherein, the processor 1010 is configured to determine M1 PSFCHs that can be sent simultaneously; the M1 PSFCHs comprise at least one PSFCH meeting COT sharing conditions;

a radio frequency unit 1001, configured to send the M1 PSFCHs.

Optionally, the meeting the COT sharing condition includes at least one of:

the second terminal initiating the sharing COT is a receiving end of the PSFCH;

the feedback information is carried by the PSFCH.

Optionally, the processor 1010 is specifically configured to:

Optionally, the processing module 210 is further configured to:

the highest priority shared COT in the at least one shared COT;

any one or more of the at least one shared COT;

and the at least one shared COT can send the PSFCH with the highest priority.

the priorities of the N2 PSFCHs are the highest priority of the N1 PSFCHs.

Optionally, the radio frequency unit 1001 is specifically configured to:

Optionally, the processor 1010 is further configured to:

discarding M1 PSFCHs;

discarding N1 PSFCHs;

Optionally, the processor 1010 is further configured to:

the target information includes at least one of:

The number of delayed transmissions of the PSFCH;

the feedback type of PSSCH corresponding to PSFCH;

channel access priority class CAPC;

priority of PSFCH;

maximum PSFCH transmission number;

the remaining maximum PSFCH transmission number;

maximum PSFCH transmit power;

the maximum PSFCH transmit power remains.

Optionally, in the case that the target information includes the COT where the PSSCH corresponding to the PSFCH is located, the processor 1010 is specifically configured to perform one of the following:

preferentially selecting PSFCH corresponding to PSSCH in the current COT;

Optionally, in the case that the target information includes a delayed transmission number of times of the PSFCH, the processor 1010 is specifically configured to perform one of:

preferentially selecting PSFCH with large delay transmission times;

Optionally, in the case that the target information includes a feedback type of a PSSCH corresponding to the PSFCH, the processor 1010 is specifically configured to:

Optionally, in the case that the target information includes the CAPC, the processor 1010 is specifically configured to perform one of:

Preferentially selecting PSFCH with high priority corresponding to CAPC;

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the foregoing embodiment of the PSFCH sending method, and the same technical effect can be achieved, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction, implement each process of the foregoing PSFCH sending method embodiment, and achieve the same technical effect, so that repetition is avoided, and no further description is given here.

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

The embodiments of the present application further provide a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the foregoing PSFCH sending method embodiment, and the same technical effect can be achieved, so that repetition is avoided, and details are not repeated herein.

The embodiment of the application also provides a communication system, which comprises: a first terminal operable to perform the steps of the PSFCH transmission method described above, and a second terminal operable to perform the steps of the PSFCH transmission method described above.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

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

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

Claims

1. A physical side chain feedback channel PSFCH transmitting method, comprising:

the first terminal transmits the M1 PSFCHs.

2. The PSFCH transmitting method of claim 1, wherein in case that the first terminal determines M1 PSFCHs from N1 PSFCHs, the M1 PSFCHs are at least one PSFCH that satisfies the COT sharing condition, which is determined from M2 PSFCHs, wherein the M2 PSFCHs are at least one PSFCH that can be simultaneously transmitted, which is determined from N1 PSFCHs.

3. The PSFCH transmission method of claim 1, wherein in case that the first terminal determines M1 PSFCHs from N2 PSFCHs, the M1 PSFCHs include M3 PFSCHs or include M3 and M4 PFSCHs, wherein the M3 PSFCHs are at least one PSFCH that can be simultaneously transmitted determined from N2 PSFCHs, and the M4 PSFCHs are at least one PSFCH that can be simultaneously transmitted determined from N1-M3 or N1-N2 PSFCHs that are remaining to be transmitted; the N2 PSFCHs are PSFCHs satisfying the COT sharing condition, which are included in the N1 PSFCHs that need to be transmitted simultaneously.

4. The PSFCH transmission method of claim 1, wherein in case that the first terminal determines M1 PSFCHs from N2 PSFCHs, the M1 PSFCHs include M5 PFSCHs, or include M5 and M6 PFSCHs, wherein the M5 PSFCHs are at least one concurrently transmittable PSFCH determined from all PSFCHs having highest priority among the N2 PSFCHs, and the M6 PSFCHs are at least one concurrently transmittable PSFCH determined from N1-M5 or N1-N2 PSFCHs that need to be transmitted remaining; the N2 PSFCHs are PSFCHs satisfying the COT sharing condition, which are included in the N1 PSFCHs that need to be transmitted simultaneously.

5. The PSFCH transmitting method of claim 3, wherein in case that said M1 PSFCHs include M3 and M4 PFSCHs, said M4 PFSCHs are determined from the remaining N1-M3 or N1-N2 PSFCHs that need to be transmitted by said first terminal in case that a first condition is satisfied, said first condition comprising: the N2 PSFCHs are smaller than the maximum number of PSFCHs that the first terminal can simultaneously transmit, or the M3 PSFCHs are smaller than the maximum number of PSFCHs that the first terminal can simultaneously transmit and the total power of the M2 PSFCHs is smaller than the maximum transmit power of the first terminal.

6. The method for transmitting PSFCH of claim 4, wherein,

in the case that the M1 PSFCHs include M5 and M6 PFSCHs, the first terminal determines from N1-M5 or N1-N2 PSFCHs that need to be transmitted in the case that the M5 PFSCHs satisfy a second condition, where the second condition includes: the number of all PSFCHs with highest priority in the N2 PSFCHs is smaller than the maximum number of PSFCHs which can be simultaneously transmitted by the first terminal, or the M5 PSFCHs are smaller than the maximum number of PSFCHs which can be simultaneously transmitted by the first terminal and the total power of the M5 PSFCHs is smaller than the maximum transmission power of the first terminal.

7. The method for transmitting PSFCH according to any one of claims 1 to 6, wherein,

the meeting the COT sharing condition includes at least one of:

the second terminal initiating the sharing COT is a receiving end of the PSFCH;

the priority corresponding to the channel access priority class CAPC of the PSFCH is greater than the priority corresponding to the CAPC of the shared COT.

8. The method for transmitting PSFCH of claim 7, wherein,

the first indication information is carried by PSCCH or PSSCH; and/or the number of the groups of groups,

the feedback information is carried by the PSFCH.

9. The PSFCH transmission method of any one of claims 1-6, wherein the first terminal determines M1 PSFCHs that can be simultaneously transmitted, comprising:

in case the first terminal detects a shared COT, the first terminal determines M1 PSFCHs that can be simultaneously transmitted.

10. The PSFCH transmission method of any one of claims 1-6, further comprising:

the first terminal determines a used shared COT from the detected at least one shared COT, the used shared COT including one of:

the highest priority shared COT in the at least one shared COT;

Any one or more of the at least one shared COT;

and the at least one shared COT can send the PSFCH with the highest priority.

11. The method for transmitting PSFCH according to any one of claims 3 to 6, wherein,

the priority of the N2 PSFCHs satisfying the COT sharing condition satisfies at least one of the following:

the priorities of the N2 PSFCHs are the highest priority of the N1 PSFCHs.

12. The PSFCH transmitting method of any one of claims 1-6, wherein the first terminal transmitting the M1 PSFCHs comprises:

the terminal determines to use the shared COT to simultaneously transmit the M1 PSFCHs according to at least one of:

In the case that there is at least one PSFCH satisfying a target condition, the first terminal transmits the M1 PSFCHs using a shared COT; the M1 PSFCHs do not include PSFCHs sent to the second terminal that initiated the shared COT;

in case that M1 PSFCHs are within a duration range of a shared COT, the first terminal transmits the M1 PSFCHs using the shared COT;

13. The PSFCH transmission method of claim 12, further comprising:

discarding M1 PSFCHs;

discarding N1 PSFCHs;

14. The PSFCH transmission method of any one of claims 1-6, further comprising:

the first terminal determines PSFCH capable of being sent simultaneously according to target information;

the target information includes at least one of:

The number of delayed transmissions of the PSFCH;

the feedback type of PSSCH corresponding to PSFCH;

channel access priority class CAPC;

priority of PSFCH;

maximum PSFCH transmission number;

the remaining maximum PSFCH transmission number;

maximum PSFCH transmit power;

the maximum PSFCH transmit power remains.

15. The PSFCH transmitting method of claim 14, wherein in case that the target information includes a COT where a PSSCH corresponding to the PSFCH is located, the first terminal determines a PSFCH that can be simultaneously transmitted according to the target information, comprising one of:

the first terminal preferentially selects PSFCH corresponding to PSSCH in the first COT; the first COT is the previous COT or the previous N COTs of the current COT, and the N is an integer larger than 1.

16. The PSFCH transmitting method of claim 14, wherein in case the target information includes a delay transmission number of the PSFCH, the first terminal determines a PSFCH capable of simultaneous transmission according to target information, comprising one of:

the first terminal preferentially selects PSFCH with large delay sending times;

the first terminal preferentially selects PSFCH with delay transmission times larger than a first threshold value.

17. The PSFCH transmitting method of claim 14, wherein in case that the target information includes a feedback type of a PSSCH to which the PSFCH corresponds, the first terminal determines a PSFCH that can be simultaneously transmitted according to the target information, comprising:

and the first terminal preferentially selects PSFCH corresponding to the PSSCH with the feedback type being NACK only.

18. The PSFCH transmitting method of claim 14, wherein in case the target information includes the cap, the first terminal determines a PSFCH capable of simultaneous transmission according to target information, comprising one of:

the first terminal preferentially selects PSFCH with high priority corresponding to CAPC;

and the first terminal preferentially selects PSFCH with the priority level larger than a second threshold value corresponding to CAPC.

19. A physical side chain feedback channel PSFCH transmitting apparatus, comprising:

and the sending module is used for sending the M1 PSFCHs.

20. A first terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the PSFCH transmission method of any one of claims 1 to 18.

21. A readable storage medium, wherein a program or instructions is stored on the readable storage medium, which when executed by a processor, implements a PSFCH transmission method according to any one of claims 1 to 18.