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WO2024022293A1 - Procédé d'envoi de canal de rétroaction de liaison latérale physique (psfch), et terminal - Google Patents

Procédé d'envoi de canal de rétroaction de liaison latérale physique (psfch), et terminal Download PDF

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Publication number
WO2024022293A1
WO2024022293A1 PCT/CN2023/108905 CN2023108905W WO2024022293A1 WO 2024022293 A1 WO2024022293 A1 WO 2024022293A1 CN 2023108905 W CN2023108905 W CN 2023108905W WO 2024022293 A1 WO2024022293 A1 WO 2024022293A1
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WO
WIPO (PCT)
Prior art keywords
psfch
psfchs
terminal
cot
shared
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/108905
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English (en)
Chinese (zh)
Inventor
李萍
纪子超
王欢
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of WO2024022293A1 publication Critical patent/WO2024022293A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated

Definitions

  • the present application belongs to the field of communication technology, and specifically relates to a physical side link feedback channel PSFCH sending method and terminal.
  • New Radio (NR) SL supports the Hybrid Automatic Repeat Request (HARQ) feedback of the Physical Sidelink Feedback Channel (PSFCH).
  • HARQ Hybrid Automatic Repeat Request
  • PSSCH Physical Sidelink shared Channel
  • Embodiments of the present application provide a physical side link feedback channel PSFCH transmission method and terminal, which can solve the problem of how to implement a PSFCH transmission method for shared spectrum.
  • a physical side link feedback channel PSFCH sending method including:
  • the first terminal determines M1 PSFCHs that can be sent simultaneously from N1 PSFCHs based on the target information; M1 is less than or equal to N1; M1 is an integer greater than 0;
  • the first terminal sends the M1 PSFCHs
  • the target information includes at least one of the following:
  • the remaining maximum PSFCH transmit power.
  • a physical side link feedback channel PSFCH sending device including:
  • a processing module configured to determine M1 PSFCHs that can be sent simultaneously from N1 PSFCHs based on target information; M1 is less than or equal to N1; M1 is an integer greater than 0;
  • a sending module configured to send the M1 PSFCHs; the target information includes at least one of the following:
  • the remaining maximum PSFCH transmit power.
  • a first terminal in a third aspect, includes a processor and a memory.
  • the memory stores programs or instructions executable on the processor. The programs or instructions are executed by the processor. When implementing the steps of the method described in the first aspect.
  • a first terminal including a processor and a communication interface, wherein the processor is configured to determine M1 PSFCHs that can be transmitted simultaneously from N1 PSFCHs according to the target information; M1 is less than or equal to N1; M1 is an integer greater than 0; the communication interface is used to send the M1 PSFCHs; the target information includes at least one of the following: the channel occupancy time COT of the physical side link shared channel PSSCH corresponding to the PSFCH; the delayed transmission of the PSFCH times; feedback type of PSSCH corresponding to PSFCH; channel access priority category CAPC; priority of PSFCH; maximum number of PSFCH transmissions; remaining maximum number of PSFCH transmissions; maximum PSFCH transmission power; remaining maximum PSFCH transmission power.
  • a communication system including: a first terminal and a second terminal.
  • the first terminal can be used to perform the steps of the PSFCH sending method as described in the first aspect.
  • the second terminal and the The first terminal communicates via the side link.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented.
  • a chip in a seventh aspect, includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the method described in the first aspect. .
  • a computer program/program product is provided, 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 the method described in the first aspect Steps of PSFCH transmission method.
  • M1 PSFCHs that can be sent simultaneously are determined from N1 PSFCHs according to the target information, and M1 PSFCHs are sent.
  • the target information includes at least one of the following: the COT where the PSFCH corresponding to the PSFCH is located; the delayed transmission of the PSFCH times; the feedback type of PSSCH corresponding to PSFCH; CAPC; the priority of PSFCH; the maximum number of PSFCH transmissions; the remaining maximum number of PSFCH transmissions; the maximum PSFCH transmission power; the remaining maximum PSFCH transmission power, that is, the priority of PSFCH and the number of PSFCH transmissions can be considered
  • transmit power you can also consider the impact of other parameters, such as parameters related to channel access, the impact of the COT where the PSFCH corresponding PSSCH is located, the number of delayed transmissions of PSFCH or CAPC, etc., to implement a PSFCH transmission method for shared spectrum.
  • Figure 1 is a structural diagram of a wireless communication system applicable to the embodiment of the present application.
  • Figure 2 is a schematic diagram of a side-link communication scenario provided by an embodiment of the present application.
  • Figure 3 is a schematic diagram of side link channel resource allocation provided by an embodiment of the present application.
  • FIG. 4 is one of the flow diagrams of the PSFCH sending method provided by the embodiment of the present application.
  • Figure 5 is one of the interactive flow diagrams of the PSFCH sending method provided by the embodiment of the present application.
  • Figure 6 is the second schematic diagram of the interaction flow of the PSFCH sending method provided by the embodiment of the present application.
  • FIG. 7 is one of the structural schematic diagrams of the PSFCH sending device provided by the embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 9 is a schematic diagram of the hardware structure of a terminal provided by an embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and “second” are distinguished objects It is usually one type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • “and/or” means that the connected At least one of the objects, the character “/” generally indicates that the related objects are an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR New Radio
  • 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 side device 12.
  • the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer.
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • UMPC ultra-mobile personal computer
  • UMPC mobile Internet device
  • Mobile Internet Device MID
  • AR augmented reality
  • VR virtual reality
  • robots wearable devices
  • VUE vehicle-mounted equipment
  • PUE pedestrian terminal
  • smart home home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.
  • PC personal computers
  • teller machines or self-service Terminal devices such as mobile phones
  • wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), Smart wristbands, smart clothing, etc.
  • the network side device 12 may include an access network device or a core network device, where the access network device may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a wireless device. access network unit. Access network equipment may include base stations, WLAN access points or WiFi nodes, etc.
  • the base stations may be called Node B, Evolved Node B (eNB), Access Point, Base Transceiver Station (BTS), Radio Base Station , radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home B-Node, Home Evolved B-Node, Transmitting Receiving Point (TRP) or the above
  • eNB Evolved Node B
  • BTS Base Transceiver Station
  • ESS Extended Service Set
  • Home B-Node Home Evolved B-Node
  • TRP Transmitting Receiving Point
  • Core network equipment may include but is not limited to at least one of the following: 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 Function (User Plane Function, UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF) ), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), network storage function (Network Repository Function, NRF), Network Exposure Function (NEF), Local NEF (Local NEF, or L-NEF), Binding Support Function (BSF), Application Function (AF) )wait.
  • MME mobility management entities
  • AMF Access and Mobility Management Function
  • SMF session management functions
  • User Plane Function User Plane Function
  • PCF Policy Control Function
  • PCF Policy and Charging Rules Function
  • unlicensed frequency bands can operate in the 5GHz, 37GHz and 60GHz frequency bands. Since the unlicensed frequency band is shared by multiple wireless access technologies (Radio Access Technology, RAT), such as wireless fidelity WiFi, radar, LTE-License Assisted Access (LAA), in some areas, unlicensed
  • RAT Radio Access Technology
  • LAA LTE-License Assisted Access
  • the frequency band must comply with corresponding rules when used to ensure that all devices can use the resource fairly, such as Listen Before Talk (LBT), Maximum Channel OccupancyTime (MCOT) and other rules.
  • LBT Listen Before Talk
  • MCOT Maximum Channel OccupancyTime
  • the transmission node When the transmission node needs to send information, it needs to perform LBT first and perform power detection (ED) on the surrounding nodes. When the detected power is lower than a threshold, the channel is considered idle and the transmission node can to send. Otherwise, the channel is considered busy and the transmitting node cannot send.
  • the transmission node can be a base station, terminal, WiFi access point (AccessPoint, AP), etc. After the transmission node starts transmitting, the occupied channel time COT cannot exceed MCOT.
  • Occupied Channel Bandwidth (OCB) rules in the unlicensed frequency band, the transmission node must occupy at least 70% (60GHz) or 80% (5GHz) of the entire frequency band during each transmission.
  • LBT LBT
  • Type1A Type2A
  • Type2B Type2C
  • Type1 LBT is a channel listening mechanism based on back-off. When the transmission node detects that the channel is busy, it backs off and continues listening until it detects that the channel is empty.
  • Type2C LBT means that the sending node does not perform LBT, that is, no LBT or immediate transmission.
  • Type2A and Type2B LBT are one-shot LBT, that is, the node performs an LBT before transmission. If the channel is empty, the transmission is performed, and if the channel is busy, the transmission is not performed. The difference is that Type2A performs LBT within 25us, which is suitable for sharing COT when the gap between two transmissions is greater than or equal to 25us. Type2B performs LBT within 16us, which is suitable for sharing COT when the gap between the two transmissions is equal to 16us.
  • Type2 LBT is suitable for LAA/eLAA/FeLAA.
  • the gap between the two transmissions is greater than or equal to 25us.
  • eNB and terminals can use Type 2 LBT.
  • the types of LBT are Type1, Type2 and Type3.
  • Type1 is a channel listening mechanism based on fallback
  • Type2 is one-shot LBT, which performs LBT of 5us within 8us
  • Type3 does not perform LBT.
  • the resources in the COT can also be shared with the terminal for uplink transmission.
  • the channel access methods that the terminals can use are Type 2A LBT, Type 2B LBT or Type 2C LBT.
  • the terminal uses Type1 LBT to initiate a COT
  • the resources in the COT can also be shared with the base station for downlink transmission.
  • the COT initiated by the base station sharing terminal includes two situations: one situation is the base station sharing the COT of the scheduled PUSCH; the other situation is the base station sharing the COT of the PUSCH exempted from scheduling authorization.
  • the side links in the LTE system are based on broadcast communication and can be used to support basic security communications of vehicle to everything (V2X), but are not suitable for other more advanced V2X services.
  • V2X vehicle to everything
  • the 5G NR system supports more advanced side-link transmission designs, such as unicast, multicast or multicast, etc., thus supporting more comprehensive service types.
  • the side-link communication system is shown in Figure 2.
  • NR SL includes the following channels:
  • Physical sidelink control channel (PSCCH); physical sidelink shared channel (PSSCH); physical sidelink broadcast channel (PSBCH); physical sidelink feedback Information (physical sidelink discovery feedback channel, PSFCH).
  • PSCCH Physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • PSBCH physical sidelink broadcast channel
  • PSFCH physical sidelink feedback Information
  • PSSCH allocates resources in units of sub-channels, and adopts a continuous resource allocation method in the frequency domain.
  • the time domain resource of PSCCH is the number of symbols configured by the higher layer, and the frequency domain size is the parameter configured by the higher layer.
  • the frequency domain resource size of PSCCH is less than or equal to the size of one subchannel, and PSCCH is located within the range of the lowest subchannel of PSSCH.
  • An example diagram is shown in Figure 3.
  • the NR V2X system supports the terminal to send multiple PSFCHs on one symbol.
  • the maximum number of PSFCHs that the terminal is allowed to send simultaneously shall not exceed the maximum number of PSFCHs to be sent N max, PSFCH that is configured by the higher layer and/or limited by the terminal capability.
  • the terminal determines the number of PSFCHs that need to be sent N sch, PSFCH according to the number of PSSCHs that need sidelink feedback received in multiple PSSCH time slots corresponding to the PSFCH time slots.
  • the terminal determines the number of PSFCHs that need to be sent, N sch, PSFCH .
  • the transmission power PSFCH of each PSFCH determined by the control rule, one , N max, PSFCH and N sch, PSFCH determines the number of PSFCHs that can be sent simultaneously N TX, PSFCH , that is, the terminal executes the prioritization process to obtain the PSFCHs that can be sent simultaneously.
  • the process is as follows:
  • N sch, PSFCH ⁇ N max, PSFCH , N sch, PSFCH, the transmission power of PSFCH exceeds P cmax the terminal determines the minimum number of PSFCHs to be sent, N min, PSFCH , N min, PSFCH is the largest N value, satisfying N P PSFCH, one does not exceed P cmax .
  • the terminal selects N TX, PSFCH PSFCH to send in order of priority from high to low.
  • N TX, PSFCH are in the range of [N min, PSFCH , N sch, PSFCH ].
  • N sch,PSFCH >N max,PSFCH the terminal selects N max , PSFCH PSFCHs among N sch,PSFCH PSFCHs in order from high to low according to the priority of PSFCH.
  • N max, PSFCH PSFCH i.e. N max, PSFCH P PSFCH, one
  • PSFCH PSFCH N max, PSFCH
  • N TX, PSFCH are in the range of [N min, PSFCH , N max, PSFCH ].
  • FIG 4 is one of the schematic flow diagrams of the PSFCH sending method provided by the embodiment of the present application. As shown in Figure 4, the method provided by this embodiment includes:
  • Step 101 The first terminal determines M1 PSFCHs that can be transmitted simultaneously from N1 PSFCHs based on the target information; M1 is less than or equal to N1; M1 is an integer greater than 0;
  • Target information includes at least one of the following:
  • the remaining maximum PSFCH transmit power.
  • the first terminal determines M1 PSFCHs that can be sent simultaneously from N1 PSFCHs according to at least one item of the target information.
  • the N1 PSFCHs may be PSFCHs that the first terminal needs to send at the same time or remaining PSFCHs that need to be sent at the same time.
  • the N1 PSFCHs include PSFCHs that meet COT sharing conditions.
  • the PSSCH in the current COT is prioritized.
  • the corresponding PSFCH is used as at least one PSFCH that can be sent at the same time; for example, the PSFCH corresponding to the PSSCH in the first COT can also be prioritized as at least one PSFCH that can be sent at the same time, and the first COT is the previous COT/first N COTs of the current COT.
  • N is an integer greater than 1.
  • the PSFCH with a large number of delayed transmissions is prioritized as at least one PSFCH that can be transmitted simultaneously to avoid PSFCH discarding.
  • the PSFCH whose delayed transmission times are greater than the first threshold may be prioritized as at least one PSFCH that can be transmitted simultaneously.
  • the feedback types include, for example, NACK/ACK and NACK-ONLY.
  • the feedback type of the PSSCH corresponding to the PSFCH at least one PSFCH that can be sent simultaneously is determined.
  • the PSFCH corresponding to the PSSCH whose feedback type is NACK-ONLY may be determined as at least one PSFCH that can be sent simultaneously.
  • PSFCH implements Type 1 LBT and uses the corresponding PSFCH priority to determine CAPC
  • different PSFCHs correspond to different CAPCs
  • the terminal can determine the PSFCHs that can be sent simultaneously based on the CAPC.
  • a PSFCH with a high CAPC priority may be given priority as at least one PSFCH that can be sent simultaneously; or a PSFCH with a CAPC priority greater than the second threshold may be given priority as at least one PSFCH that can be sent simultaneously.
  • Step 102 The first terminal sends M1 PSFCHs.
  • the M1 PSFCHs may be PSFCHs sent to one or more terminals.
  • the method of this embodiment determines M1 PSFCHs that can be sent simultaneously from N1 PSFCHs based on target information, and sends M1 PSFCHs.
  • the target information includes at least one of the following: the COT where the PSSCH corresponding to the PSFCH is located; the number of delayed transmissions of the PSFCH ; The feedback type of PSSCH corresponding to PSFCH; CAPC; the priority of PSFCH; the maximum number of PSFCH transmissions; the remaining maximum number of PSFCH transmissions; the maximum PSFCH transmission power; the remaining maximum PSFCH transmission power, that is, the priority of PSFCH, the number of PSFCH transmissions, or
  • the transmission power can also consider the impact of other parameters, such as parameters related to channel access, the impact of the COT where the PSFCH corresponding PSSCH is located, the number of delayed transmissions of PSFCH or CAPC, etc., to implement a PSFCH transmission method for shared spectrum.
  • the N1 PSFCHs are PSFCHs that the first terminal needs to send at the same time, or the remaining PSFCHs that the first terminal needs to send at the same time; or
  • the N1 PSFCHs are the PSFCHs that the first terminal needs to send simultaneously, and the N1 PSFCHs include PSFCHs that meet the COT sharing conditions; or,
  • the N1 PSFCHs are the PSFCHs that the first terminal needs to send simultaneously, and the N1 PSFCHs include the PSFCH with the highest priority among the PSFCHs that meet the COT sharing conditions.
  • the N1 PSFCHs may be PSFCHs that the first terminal needs to send simultaneously, or the remaining PSFCHs need to be sent simultaneously.
  • PSFCH sent; further, the N1 PSFCHs that need to be sent at the same time or the remaining PSFCHs that need to be sent at the same time can include PSFCHs that meet the COT sharing conditions.
  • the N1 PSFCHs can be part of the PSFCHs that meet the COT sharing conditions, or all of them.
  • step 101 can be implemented by at least one of the following:
  • the first terminal determines M1 PSFCHs that can be sent simultaneously from N1 PSFCHs that need to be sent based on the target information;
  • the first terminal determines M1 PSFCHs that can be sent simultaneously from the N1 PSFCHs that need to be sent according to the target information;
  • the first terminal When the first terminal detects the shared COT, the first terminal determines M1 PSFCHs that can be sent simultaneously from N1 PSFCHs that need to be sent according to the target information.
  • step 101 is executed before determining the M1 PSFCHs that need to be sent simultaneously; if the first terminal can complete Type1LBT, step 101 is executed; or, if the N1 PSFCHs that need to be sent simultaneously can be used as short control signaling (Short control signaling), then If there is no need to perform LBT, step 101 is executed; or, if the first terminal detects the shared COT, step 101 is executed.
  • short control signaling Short control signaling
  • the above-mentioned M1 PSFCHs can be obtained according to at least one of the priority of the PSFCH, the maximum number of PSFCHs sent/the remaining maximum number of PSFCHs sent, and the maximum PSFCH transmit power/the remaining maximum PSFCH transmit power.
  • the method also includes:
  • the first terminal determines the shared COT used from the detected at least one shared COT, and the used shared COT includes one of the following:
  • At least one shared COT with the highest priority At least one shared COT with the highest priority
  • At least one shared COT can send the largest number of PSFCHs
  • At least one shared COT can send the PSFCH with the highest priority.
  • the first terminal detects L1 (L1 is an integer greater than 0) shared COTs, and the first terminal determines the shared COT to use based on at least one of the following:
  • the shared COT of the PSFCH with the highest priority can be sent.
  • step 101 can be implemented in any of the following ways:
  • the first terminal preferentially selects the PSFCH corresponding to the PSSCH in the current COT;
  • the first terminal preferentially selects the PSFCH corresponding to the PSSCH in the first COT; the first COT is the previous COT or the first N COTs of the current COT, and N is an integer greater than 1.
  • the PSFCH when selecting M1 PSFCHs, can be selected according to the COT in which 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 can include, for example, the PSSCH in the current COT.
  • the corresponding PSFCH, or the PSFCH that is not corresponding to the PSSCH in the current COT, but has a larger number of delayed transmissions or a higher priority, is not limited by the embodiments of this application;
  • the first COT is the previous COT or the first N COTs, and N is an integer greater than 1.
  • the transmission of PSFCH may not be transmitted due to LBT failure and is delayed until the next PSFCH opportunity. Therefore, the PSFCH corresponding to the PSSCH in the previous COT can be sent first to avoid the PSFCH corresponding to the PSSCH in the previous COT exceeding the packet delay. Budget (Packet Delay Budget, PDB) restrictions.
  • step 101 can be implemented in any of the following ways:
  • the first terminal preferentially selects the PSFCH with a large number of delayed transmissions
  • the first terminal preferentially selects the PSFCH whose delayed transmission times are greater than the first threshold.
  • the first terminal can determine the M1 PSFCHs that can be transmitted simultaneously based on the number of delayed transmissions of the PSFCH, and give priority to the PSFCH with a greater number of delayed transmissions. For example, select at least the first PSFCH with a greater number of delayed transmissions, and can prioritize the delayed PSFCH. Transmission is performed to improve communication reliability; or, a PSFCH with a large number of delayed transmissions greater than the first threshold is selected first, that is, a PSFCH with a large number of delayed transmissions greater than the first threshold is selected.
  • step 101 can be implemented in any of the following ways:
  • the first terminal preferentially selects the PSFCH corresponding to the PSSCH whose feedback type is NACK only.
  • the first terminal may determine the M1 PSFCHs to be sent simultaneously according to the feedback type of the PSFCH, for example, give priority to the PSFCH corresponding to the PSSCH whose feedback type is NACK-ONLY. If the feedback type is NACK-ONLY and the receiving end does not receive feedback, then the receiving end will think that the feedback sent by PSSCH is ACK. Therefore, if the first terminal wants to send NACK but the channel access fails, it will also be regarded as ACK. Therefore, when there is an opportunity to send a PSFCH, this type of PSFCH is sent first, which can avoid the situation that the NACK fails to be sent and is regarded as an ACK.
  • step 101 can be implemented in any of the following ways:
  • the first terminal preferentially selects the PSFCH with a higher priority corresponding to the CAPC;
  • the first terminal preferentially selects the PSFCH whose priority corresponding to the CAPC is greater than the second threshold.
  • the first terminal selects the information that can be sent simultaneously according to parameters related to channel access, such as CAPC.
  • the PSFCHs with higher priorities corresponding to the CAPC may be selected first, for example, the first M1 PSFCHs with the higher priorities corresponding to the CAPCs may be selected first, or the PSFCHs with the priority corresponding to the CAPCs greater than the second threshold may be selected first.
  • the terminal when determining the number of PSFCHs that can be sent simultaneously, the terminal considers some parameters related to channel access, such as CAPC, the first COT where the PSSCH corresponding to the PSFCH is located, the number of delayed transmissions of the PSFCH, etc., in order to achieve Transmitting on unlicensed spectrum.
  • the PSFCH corresponding to the PSSCH whose feedback type is NACK only can be selected, and the PSFCH corresponding to CAPC with high priority can be selected. This is not limited in the embodiment of the present application.
  • the first terminal has multiple PSFCH feedbacks, and assuming that the PSFCH performs Type 2 LBT, considering that the COT sharing conditions are met, if among the PSFCHs that the first terminal determines can be sent at the same time, it is sent to the second terminal that initiates the sharing of COT. If the PSFCHs are all discarded, the first terminal cannot use the COT initiated by the second terminal initiating the shared COT to feed back the PSFCH. Therefore, it is necessary to ensure that at least one PSFCH sent to the second terminal initiating the shared COT is not discarded.
  • the priority of the PSFCH of the second terminal initiating the shared COT is increased to ensure that at least one PSFCH sent to the second terminal initiating the shared COT is not discarded when the first terminal determines the PSFCHs that can be sent simultaneously.
  • the priorities of the N2 PSFCHs that meet the COT sharing conditions satisfy at least one of the following:
  • the priority of the PSFCH with the highest priority among the N2 PSFCHs is the highest priority among the N1 PSFCHs, and the priorities of the remaining PSFCHs among the N2 PSFCHs are the same as the priorities of their corresponding PSSCHs;
  • the priority of at least one PSFCH among the N2 PSFCHs is the highest priority among the N1 PSFCHs, and the priorities of the remaining PSFCHs among the N2 PSFCHs are the same as the priorities of their corresponding PSSCHs;
  • the priorities of the N2 PSFCHs are all the highest priorities among the N1 PSFCHs.
  • the priority of the N2 PSFCHs that meet the COT sharing conditions can be, for example, at least one priority.
  • the priority of the PSFCH with the highest level is set to the highest priority; or, the priority of at least one PSFCH among the PSFCHs that meet the COT sharing conditions can be set to the highest priority, or the priorities of the N2 PSFCHs can be set to The highest priority, the priority of the remaining PSFCHs is still the priority of the corresponding PSSCH, that is, the priorities of the other PSFCHs remain unchanged.
  • the above-mentioned highest priority can be the highest priority among the priorities of N1 PSFCHs, or it can be a specific priority.
  • the level value for example, the priority ranges from 0 to 7, and 0 represents the highest priority.
  • the specific priority value is 0.
  • there is at least one PSFCH among the N2 PSFCHs which is the highest priority PSFCH among the N1 PSFCHs.
  • the priority of the PSFCH selects the PSFCH to be sent, that is, it can ensure that at least one PSFCH sent to the second terminal is not discarded, and the first terminal can use the shared COT initiated by the second terminal to send the PSFCH.
  • meeting COT sharing conditions includes at least one of the following:
  • the second terminal that initiates shared COT is the receiving end of PSFCH
  • the second terminal that initiates the shared COT is in the same multicast group as the first terminal, and the shared COT is used by the second terminal to send multicast information;
  • the shared COT is used by the second terminal to send broadcast information
  • the first terminal receives the first indication information sent by the second terminal that initiates the shared COT, and the first indication information is used to indicate that the first terminal can use the shared COT to send the PSFCH; optionally, the first indication information is carried by the PSCCH or PSSCH;
  • the first terminal uses the COT where the SCI demodulated by the first terminal is located to send the PSFCH;
  • the shared COT is used by the second terminal to send feedback information; optionally, the feedback information is carried by PSFCH;
  • the priority corresponding to the CAPC of the PSFCH is greater than the priority corresponding to the CAPC of the shared COT.
  • the second terminal initiating the sharing of COT is the receiving end of the first terminal sending the PSFCH; in the case of multicast, the second terminal initiating the sharing of COT communicates with the first terminal.
  • the terminals are in the same multicast, and the shared COT is used by the second terminal to send multicast information; in the case of broadcast, the shared COT is used by the second terminal to send broadcast information, and the second terminal is the terminal that initiated the shared COT. , then the PSFCH sent using the shared COT satisfies the COT sharing conditions;
  • the first indication information indicates that the first terminal can use the shared COT to send the PSFCH; the shared COT is initiated by the second terminal, and the PSFCH sent by the first terminal using the shared COT satisfies the COT sharing condition;
  • the first terminal may use the COT where its demodulated SCI is located to send the PSFCH, and the PSFCH sent using the COT where the SCI is located satisfies the COT sharing condition.
  • the shared COT is used by 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 using the shared COT satisfies the COT sharing condition;
  • the priority corresponding to the CAPC of the PSFCH is greater than the priority corresponding to the CAPC of the shared COT, then the PSFCH meets the COT sharing condition, and the PSFCH can be sent using the shared COT.
  • the priority of at least one PSFCH among the priorities of the N2 PSFCHs that meet the COT sharing conditions is the highest priority, and then the priority of the PSFCH can be based on the PSFCH
  • the priority of selecting the PSFCH to be sent can ensure that there is at least one PSFCH that meets the COT sharing conditions and will not be discarded.
  • the first terminal can use the shared COT initiated by the second terminal to send the PSFCH, thereby improving resource utilization.
  • step 102 can be implemented in the following manner:
  • the terminal determines to use the shared COT to simultaneously send M1 PSFCHs based on at least one of the following:
  • the first terminal uses the shared COT to send the M1 PSFCHs;
  • the first terminal uses the shared COT to send M1 PSFCHs; the M1 PSFCHs do not include the PSFCH sent to the second terminal that initiates the shared COT;
  • the first terminal uses the shared COT to send M1 PSFCHs;
  • the target conditions include at least one of the following: feedback type is NACK only, feedback value is ACK, and COT sharing conditions are met.
  • the first terminal determines whether the M1 PSFCHs can be sent simultaneously using the shared COT based on at least one of the following, that is, the first terminal determines whether the M1 PSFCHs can be sent simultaneously using the shared COT, that is, the first terminal determines whether the M1 PSFCHs satisfy the COT sharing conditions. Whether they are all discarded determines whether to use the shared COT.
  • the first terminal uses the shared COT to send the M1 PSFCHs; otherwise, the first terminal does not use the shared COT to send the M1 PSFCHs. PSFCH.
  • the first terminal does not send the PSFCH to the second terminal that initiates the shared COT, but the first terminal can use the shared COT to send M1 PSFCHs, that is, the M1 PSFCHs are not Including PSFCHs sent to the second terminal that initiates shared COT.
  • the M1 PSFCHs are PSFCHs sent to the third terminal.
  • the third terminal can be one terminal or multiple terminals:
  • the feedback type is NACK-ONLY, the feedback value is ACK, or the COT sharing conditions are met (for example, sent to the second terminal);
  • M1 PSFCHs are within the duration range of the shared COT, then the first terminal uses the shared COT to send M1 PSFCHs; otherwise, the first terminal does not use the shared COT to send M1 PSFCHs.
  • the method also includes:
  • the first terminal performs at least one of the following:
  • Type1 LBT If Type1 LBT is executed successfully, M1 PSFCHs are sent.
  • the first terminal performs at least one of the following behaviors:
  • the shared COT when there is at least one PSFCH that satisfies the COT sharing condition among the M1 PSFCHs, there is at least one PSFCH that satisfies the target condition, and the M1 PSFCHs are within the duration range of the shared COT, the shared COT can be used to send M1 A PSFCH can improve resource utilization.
  • the first terminal determines the M1 PSFCHs that can be sent simultaneously from the N1 PSFCHs;
  • the first terminal determines the M1 PSFCHs that can be sent simultaneously from the N1 PSFCHs and sends them; or
  • the first terminal Before the N1 PSFCHs that need to be sent simultaneously, if the first terminal detects the shared COT, the first terminal selects M1 PSFCHs that can be sent simultaneously from the N1 PSFCHs.
  • the M1 PSFCHs may determine the PSFCH according to the following method (for example, the first terminal determines the PSFCH according to at least one of the priority of the PSFCH, the maximum number of PSFCH transmissions, and the maximum PSFCH transmission power):
  • the first terminal selects Nmax,PSFCH PSFCHs from the N1 PSFCHs in order from high to low according to the priorities of the PSFCHs.
  • N max, PSFCH PSFCH ie N max, PSFCH P PSFCH, one
  • M1 N max, PSFCH
  • the first terminal sends the selected N max, PSFCH PSFCH ;
  • the first terminal determines the minimum number of PSFCH to send N min, PSFCH , N min, PSFCH is the maximum N value, satisfying N P PSFCH, one does not exceed P cmax , the first terminal selects M1 PSFCHs for transmission in order of priority from high to low, and M1 is in the range of [N min, PSFCH , N max, PSFCH ].
  • the first terminal needs to send N1 PSFCHs at the same time, where the N1 PSFCHs include N2 PSFCHs that meet COT sharing conditions.
  • One of the conditions for COT sharing is that the receiving end of the PSFCH is the second terminal that initiates COT.
  • the priority of the N2 PSFCHs that meet the COT sharing conditions can be determined according to any of:
  • the priority of at least one PSFCH with the highest priority among the N2 PSFCHs that meet the COT sharing conditions is the highest priority, and the priorities of the remaining PSFCHs that meet the COT sharing conditions are the same as the priorities of their corresponding PSSCHs;
  • the priority of at least one PSFCH that meets the COT sharing conditions is the highest priority, and the priorities of the remaining PSFCHs that meet the COT sharing conditions are the same as the priorities of their corresponding PSSCHs;
  • the first terminal determines the M1 PSFCHs that can be transmitted simultaneously in the following manner (that is, the first terminal determines the M1 PSFCHs that can be transmitted simultaneously according to the priority of the PSFCH, the maximum number of PSFCHs to be transmitted, and the maximum PSFCH transmission power):
  • the first terminal determines the minimum number of PSFCHs to be sent, N min, PSFCH , N min, PSFCH is the largest N value, satisfying N P PSFCH, one does not exceed P cmax .
  • the first terminal selects M1 PSFCHs among the N1 PSFCHs in order from high to low priority. To send, M1 is in the range [N min, PSFCH , N sch, PSFCH ].
  • the first terminal selects Nmax,PSFCH PSFCHs from the N1 PSFCHs in order from high to low according to the priorities of the PSFCHs.
  • N max, PSFCH PSFCH ie N max, PSFCH P PSFCH, one
  • M1 N max, PSFCH
  • the first terminal sends the selected N max, PSFCH PSFCH ;
  • the first terminal determines the minimum number of PSFCH to send N min, PSFCH , N min, PSFCH is the maximum N value, satisfying N P PSFCH, one does not exceed P cmax , the first terminal selects M1 PSFCHs for transmission in order of priority from high to low, and M1 is in the range of [N min, PSFCH , N max, PSFCH ].
  • the first terminal determines that the M1 PSFCHs actually sent simultaneously will be selected in order of priority from high to low. If the priorities of the N2 PSFCHs that meet the COT sharing conditions are determined according to the above method, it can be guaranteed that at least At least one PSFCH that meets the COT sharing condition is not discarded, and the first terminal can use the shared COT initiated by the second terminal to send the PSFCH.
  • the first terminal needs to send N1 PSFCHs at the same time, and the first terminal determines the M1 PSFCHs that can be sent simultaneously according to at least one of the following:
  • Nmax,PSFCH PSFCHs that satisfy at least one of the following among N1 PSFCHs:
  • N max, PSFCH PSFCH ie N max, PSFCH P PSFCH, one
  • M1 N max, PSFCH
  • the first terminal sends the selected N max, PSFCH PSFCH ;
  • the first terminal determines the minimum number of PSFCH to send N min, PSFCH , N min, PSFCH is the maximum N value, satisfying N P PSFCH, one does not exceed P cmax , first The terminal selects M1 PSFCHs that satisfy at least one of the following among N max, PSFCH PSFCHs, and M1 is in the range of [N min, PSFCH , N max, PSFCH ]:
  • the first terminal determines whether to use the M1 PSFCHs sent simultaneously using the shared COT initiated by the second terminal according to at least one of the following:
  • the first terminal uses the shared COT to send M1 PSFCHs; otherwise , the first terminal does not use the shared COT to send M1 PSFCHs.
  • the first terminal If the first terminal has at least one PSFCH whose feedback type is NACK-ONLY, whose feedback value is ACK, and which satisfies the COT sharing conditions, the first terminal will not send the PSFCH to the second terminal, but the first terminal can use the sharing COT sends M1 PSFCHs, that is, the M1 PSFCHs do not include the PSFCH sent to the second terminal;
  • the first terminal uses the shared COT to send the M1 PSFCHs; otherwise, the first terminal does not use the shared COT to send the M1 PSFCHs.
  • the execution subject may be a PSFCH sending device.
  • the PSFCH sending device performing the PSFCH sending method is used as an example to describe the PSFCH sending device provided by the embodiment of this application.
  • FIG 7 is one of the structural schematic diagrams of the PSFCH sending device provided by the embodiment of the present application.
  • the PSFCH sending device provided in this embodiment includes:
  • the processing module 210 is configured to determine M1 PSFCHs that can be transmitted simultaneously from N1 PSFCHs according to the target information; M1 is less than or equal to N1; M1 is an integer greater than 0;
  • the sending module 220 is configured to send the M1 PSFCHs; the target information includes at least one of the following:
  • the N1 PSFCHs are the PSFCHs that the first terminal needs to send at the same time, or the remaining PSFCHs that the first terminal needs to send at the same time; or,
  • the N1 PSFCHs are PSFCHs that the first terminal needs to send simultaneously, and the N1 PSFCHs include PSFCHs that meet COT sharing conditions; or,
  • the N1 PSFCHs are PSFCHs that the first terminal needs to send simultaneously, and the N1 PSFCHs include the PSFCH with the highest priority among the PSFCHs that meet the COT sharing conditions.
  • processing module 210 is specifically configured to perform at least one of the following:
  • N1 PSFCHs that need to be sent can be used as short control signals, determine M1 PSFCHs that can be sent simultaneously from the N1 PSFCHs that need to be sent according to the target information;
  • the first terminal When the first terminal detects the shared COT, it determines M1 PSFCHs that can be sent simultaneously from N1 PSFCHs that need to be sent according to the target information.
  • processing module 210 is also used to:
  • the used shared COT is determined from the detected at least one shared COT, and the used shared COT includes one of the following:
  • the shared COT that can send the largest number of PSFCHs among the at least one shared COT;
  • the shared COT capable of sending the PSFCH with the highest priority.
  • the processing module 210 is specifically configured to perform one of the following:
  • the PSFCH corresponding to the PSSCH in the first COT is preferably selected; the first COT is the previous COT or the first N COTs of the current COT, and N is an integer greater than 1.
  • the processing module 210 is specifically configured to perform one of the following:
  • the PSFCH whose number of delayed transmission times is greater than the first threshold is preferably selected.
  • the processing module 210 is specifically configured to:
  • the PSFCH corresponding to the PSSCH whose feedback type is NACK only is preferably selected.
  • the processing module 210 is specifically configured to perform one of the following:
  • the PSFCH whose priority corresponding to the CAPC is greater than the second threshold is preferably selected.
  • the priorities of the N2 PSFCHs that meet COT sharing conditions satisfy at least one of the following:
  • the priority of the PSFCH with the highest priority among the N2 PSFCHs is the highest priority among the N1 PSFCHs, and the priorities of the remaining PSFCHs among the N2 PSFCHs are the same as the priorities of their respective corresponding PSSCHs;
  • the priority of at least one of the N2 PSFCHs is the highest priority of the N1 PSFCHs, and the priorities of the remaining PSFCHs among the N2 PSFCHs are the same as the priorities of their respective corresponding PSSCHs;
  • the priorities of the N2 PSFCHs are all the highest priorities among the N1 PSFCHs.
  • the meeting of COT sharing conditions includes at least one of the following:
  • the second terminal that initiates shared COT is the receiving end of the PSFCH
  • the second terminal that initiates the shared COT is in the same groupcast as the first terminal, and the shared COT is used by the second terminal to send multicast information;
  • the shared COT is used by the second terminal to send broadcast information
  • the first terminal receives the first indication information sent by the second terminal that initiates the shared COT, and the first indication information is used to indicate that the first terminal can use the shared COT to send the PSFCH;
  • the first terminal sends the PSFCH using the COT where the SCI demodulated by the first terminal is located;
  • the shared COT is used by the second terminal to send feedback information
  • the priority corresponding to the CAPC of the PSFCH is greater than the priority corresponding to the CAPC of the shared COT.
  • the first indication information is carried by PSCCH or PSSCH; and/or,
  • the feedback information is carried by PSFCH;
  • the sending module 220 is specifically used to:
  • the M1 PSFCHs are sent simultaneously using the shared COT determined according to at least one of the following:
  • the M1 PSFCHs do not include the PSFCH sent to the second terminal that initiates the shared COT;
  • the M1 PSFCHs are within the duration range of the shared COT, use the shared COT to send the M1 PSFCHs;
  • the target conditions include at least one of the following: feedback type is NACK only, feedback value is ACK, and COT sharing conditions are met.
  • the processing module 210 is also configured to perform at least one of the following:
  • Type1 LBT If Type1 LBT is executed successfully, the sending module 220 is also used to send M1 PSFCHs.
  • the device of this embodiment can be used to execute the method of any of the foregoing terminal-side method embodiments. Its specific implementation process and technical effects are the same as those in the terminal-side method embodiments. For details, please refer to the terminal-side method embodiments. Detailed introduction will not be repeated here.
  • the PSFCH transmitting device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal, It can also be other devices besides terminals.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • the PSFCH sending device provided by the embodiment of the present application can implement each process implemented by the method embodiments of Figure N to Figure N+x, and achieve the same technical effect. To avoid duplication, details will not be described here.
  • this embodiment of the present application also provides a communication device 800, which includes a processor 801 and a memory 802.
  • the memory 802 stores programs or instructions that can be run on the processor 801, such as , when the communication device 800 is a terminal, when the program or instruction is executed by the processor 801, each step of the above-mentioned PSFCH sending method embodiment is implemented, and the same technical effect can be achieved.
  • the communication device 800 is a second terminal, when the program or instruction is executed by the processor 801, each step of the above-mentioned PSFCH sending method embodiment is implemented, and the same technical effect can be achieved. To avoid duplication, the details will not be described here.
  • Embodiments of the present application also provide a first terminal, including a processor and a communication interface.
  • the processor is configured to determine M1 PSFCHs that can be sent simultaneously from N1 PSFCHs based on target information; M1 is less than or equal to N1; M1 is greater than 0. Integer; the communication interface is used to send the M1 PSFCHs.
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG. 9 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 1000 includes but is not limited to: radio frequency unit 1001, network module 1002, audio output unit 1003, input unit 1004, sensor 1005, display unit 1006, user input unit 1007, interface unit 1008, memory 1009, processor 1010, etc. at least some parts of it.
  • the terminal 1000 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 1010 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in FIG. 9 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or may combine certain components, or arrange different components, which will not be described again here.
  • the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042.
  • the graphics processor 10041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras).
  • the display unit 1006 may include a display panel 10061, which 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 a touch panel 10071 and at least one of other input devices 10072 . Touch panel 10071, also known as touch screen.
  • the touch panel 10071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.
  • the radio frequency unit 1001 after receiving downlink data from the network side device, can transmit it to the processor 1010 for processing; in addition, the radio frequency unit 1001 can send uplink data to the network side device.
  • the radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.
  • Memory 1009 may be used to store software programs or instructions as well as various data.
  • the memory 1009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage program or instruction area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, image playback function, etc.), etc.
  • memory 1009 may include volatile memory or nonvolatile memory, or memory 1009 may include both volatile and nonvolatile memory.
  • non-volatile memory can also include non-volatile memory, where the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), programmable read-only memory (Programmable ROM, PROM), Erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • PROM programmable read-only memory
  • PROM programmable read-only memory
  • Erasable PROM Erasable programmable read-only memory
  • EPROM electrically erasable programmable read-only memory
  • flash memory electrically erasable programmable read-only memory
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM).
  • Memory 1009 in embodiments of the present application includes, but is not limited to, these and any other suitable type of memory such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.
  • the processor 1010 may include one or more processing units; optionally, the processor 1010 may integrate an application processor and a modem processor, where the application processor mainly processes operating systems, user interfaces, application programs or instructions, etc. In operation, the modem processor mainly processes wireless communication signals, such as the baseband processor. It can be understood that the above modem processor may not be integrated into the processor 1010.
  • the processor 1010 is used to determine M1 PSFCHs that can be transmitted simultaneously from N1 PSFCHs according to the target information; M1 is less than or equal to N1; M1 is an integer greater than 0;
  • the radio frequency unit 1001 is configured to send the M1 PSFCHs;
  • the target information includes at least one of the following:
  • the remaining maximum PSFCH transmit power.
  • the N1 PSFCHs are the PSFCHs that the first terminal needs to send at the same time, or the remaining PSFCHs that the first terminal needs to send at the same time; or,
  • the N1 PSFCHs are PSFCHs that the first terminal needs to send simultaneously, and the N1 PSFCHs include PSFCHs that meet COT sharing conditions; or,
  • the N1 PSFCHs are PSFCHs that the first terminal needs to send simultaneously, and the N1 PSFCHs include the PSFCH with the highest priority among the PSFCHs that meet the COT sharing conditions.
  • processor 1010 is specifically configured to perform at least one of the following:
  • N1 PSFCHs that need to be sent can be used as short control signals, determine M1 PSFCHs that can be sent simultaneously from the N1 PSFCHs that need to be sent according to the target information;
  • the first terminal When the first terminal detects the shared COT, it determines M1 PSFCHs that can be sent simultaneously from N1 PSFCHs that need to be sent according to the target information.
  • processor 1010 is also used to:
  • the used shared COT is determined from the detected at least one shared COT, and the used shared COT includes one of the following:
  • the shared COT that can send the largest number of PSFCHs among the at least one shared COT;
  • the shared COT capable of sending the PSFCH with the highest priority.
  • the processor 1010 is specifically configured to perform one of the following:
  • the PSFCH corresponding to the PSSCH in the first COT is preferably selected; the first COT is the previous COT or the first N COTs of the current COT, and N is an integer greater than 1.
  • the processor 1010 is specifically configured to perform one of the following:
  • the PSFCH whose number of delayed transmission times is greater than the first threshold is preferably selected.
  • the processor 1010 is specifically configured to:
  • the PSFCH corresponding to the PSSCH whose feedback type is NACK only is preferably selected.
  • the processing module 210 is specifically configured to perform one of the following:
  • the PSFCH whose priority corresponding to the CAPC is greater than the second threshold is preferably selected.
  • the priorities of the N2 PSFCHs that meet COT sharing conditions satisfy at least one of the following:
  • the priority of the PSFCH with the highest priority among the N2 PSFCHs is the highest priority among the N1 PSFCHs, and the priorities of the remaining PSFCHs among the N2 PSFCHs are the same as the priorities of their respective corresponding PSSCHs;
  • the priority of at least one of the N2 PSFCHs is the highest priority of the N1 PSFCHs, and the priorities of the remaining PSFCHs among the N2 PSFCHs are the same as the priorities of their respective corresponding PSSCHs;
  • the priorities of the N2 PSFCHs are all the highest priorities among the N1 PSFCHs.
  • the meeting of COT sharing conditions includes at least one of the following:
  • the second terminal that initiates shared COT is the receiving end of the PSFCH
  • the second terminal that initiates the shared COT is in the same groupcast as the first terminal, and the shared COT is used by the second terminal to send multicast information;
  • the shared COT is used by the second terminal to send broadcast information
  • the first terminal receives the first indication information sent by the second terminal that initiates the shared COT, and the first indication information is used to indicate that the first terminal can use the shared COT to send the PSFCH;
  • the first terminal sends the PSFCH using the COT where the SCI demodulated by the first terminal is located;
  • the shared COT is used by the second terminal to send feedback information
  • the priority corresponding to the CAPC of the PSFCH is greater than the priority corresponding to the CAPC of the shared COT.
  • the first indication information is carried by PSCCH or PSSCH; and/or,
  • the feedback information is carried by PSFCH;
  • the radio frequency unit 1001 is specifically used for:
  • the M1 PSFCHs are sent simultaneously using the shared COT determined according to at least one of the following:
  • the M1 PSFCHs do not include the PSFCH sent to the second terminal that initiates the shared COT;
  • the M1 PSFCHs are within the duration range of the shared COT, use the shared COT to send the M1 PSFCHs;
  • the target conditions include at least one of the following: feedback type is NACK only, feedback value is ACK, and COT sharing conditions are met.
  • the processor 1010 is further configured to perform at least one of the following:
  • Type1 LBT If Type1 LBT is executed successfully, the radio frequency unit 1001 is also used to send M1 PSFCHs.
  • Embodiments of the present application also provide a readable storage medium.
  • Programs or instructions are stored on the readable storage medium.
  • the program or instructions are executed by a processor, each process of the above-mentioned PSFCH transmission method embodiment is implemented, and the same can be achieved. The technical effects will not be repeated here to avoid repetition.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.
  • An embodiment of the present application further provides a chip.
  • the chip includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the above PSFCH sending method embodiment. Each process can achieve the same technical effect. To avoid duplication, it will not be described again here.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product.
  • the computer program/program product is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the above PSFCH transmission method embodiment.
  • Each process can achieve the same technical effect. To avoid repetition, we will not go into details here.
  • Embodiments of the present application also provide a communication system, including: a first terminal and a second terminal.
  • the terminal can be used to perform the steps of the PSFCH sending method as described above.
  • the second terminal can be used to perform the steps of the PSFCH sending method as described above. Steps of PSFCH transmission method.
  • the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes a number of instructions to make a terminal (can It is a mobile phone, computer, server, air conditioner, or network device, etc.) that executes the methods described in various embodiments of this application.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande appartient au domaine technique des communications. Sont divulgués un procédé d'envoi de canal de rétroaction de liaison latérale physique (PSFCH), et un terminal. Le procédé d'envoi de canal de rétroaction de liaison latérale physique (PSFCH) dans les modes de réalisation de la présente demande comprend les étapes suivantes : un premier terminal détermine, parmi N1 PSFCH et selon des informations cibles, M1 PSFCH qui peuvent être envoyés simultanément, M1 étant inférieur ou égal à N1, et M1 étant un nombre entier supérieur à 0 ; et le premier terminal envoie les M1 PSFCH, les informations cibles comprenant un temps d'occupation de canal (COT) à l'intérieur duquel se trouve un canal partagé de liaison latérale physique (PSSCH) correspondant à un PSFCH, et/ou le nombre de fois où l'envoi du PSFCH est retardé, et/ou le type de rétroaction du PSSCH correspondant au PSFCH, et/ou une classe de priorité d'accès au canal (CAPC), et/ou la priorité du PSFCH, et/ou le nombre maximal de PSFCH à envoyer, et/ou le nombre maximal restant de PSFCH à envoyer, et/ou la puissance d'envoi PSFCH maximale, et/ou la puissance d'envoi PSFCH maximale restante.
PCT/CN2023/108905 2022-07-27 2023-07-24 Procédé d'envoi de canal de rétroaction de liaison latérale physique (psfch), et terminal Ceased WO2024022293A1 (fr)

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CN202210894185.XA CN117527162A (zh) 2022-07-27 2022-07-27 物理侧链路反馈信道psfch发送方法及终端

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EP4564981A4 (fr) * 2022-09-15 2025-10-15 Guangdong Oppo Mobile Telecommunications Corp Ltd Procédé de communication, dispositif terminal et dispositif de réseau

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WO2025147930A1 (fr) * 2024-01-10 2025-07-17 北京小米移动软件有限公司 Procédé et appareil de communication, et support de stockage

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US20210092783A1 (en) * 2019-09-25 2021-03-25 Qualcomm Incorporated Channel occupancy time (cot) sharing for sidelink
CN114467314A (zh) * 2022-01-06 2022-05-10 北京小米移动软件有限公司 确定共享信道占用时间的方法及其装置
CN114765506A (zh) * 2021-01-15 2022-07-19 展讯通信（上海）有限公司 辅链路的psfch传输方法及装置、计算机可读存储介质

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US20210092783A1 (en) * 2019-09-25 2021-03-25 Qualcomm Incorporated Channel occupancy time (cot) sharing for sidelink
CN114424640A (zh) * 2019-09-25 2022-04-29 高通股份有限公司 用于侧行链路的信道占用时间（cot）共享
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EP4564981A4 (fr) * 2022-09-15 2025-10-15 Guangdong Oppo Mobile Telecommunications Corp Ltd Procédé de communication, dispositif terminal et dispositif de réseau

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