WO2023060600A1

WO2023060600A1 - Method for wireless communication and terminal

Info

Publication number: WO2023060600A1
Application number: PCT/CN2021/124226
Authority: WO
Inventors: 赵振山; 丁伊; 张世昌; 林晖闵; 马腾
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2023-04-20
Also published as: WO2023060731A1; CN117642998A

Abstract

Provided are a method for wireless communication and a terminal. The method comprises: a first terminal receiving sidelink data by means of a plurality of carriers, the sidelink data on the plurality of carriers corresponding to N1 physical sidelink feedback channels (PSFCHs), and time domain positions of the N1 PSFCHs overlapping; and according to first information, the first terminal determining, from the N1 PSFCHs, N2 PSFCHs to be transmitted, wherein N1 and N2 are positive integers, and N2≤N1. The first information comprises at least one among the following information: priorities of N1 PSFCHs; the number N3 of PSFCHs that may be simultaneously transmitted by the first terminal; the maximum transmission power P1 of each PSFCH transmitted by the first terminal; or, the maximum transmission power P2 of the first terminal. In the embodiments of the present application, a terminal that acts as a receiving end is required to take into consideration one or more factors when determining a PSFCH that is actually transmitted, and the consideration of said factors is helpful for the terminal to formulate a reasonable PSFCH transmission solution.

Description

Method and terminal for wireless communication

technical field

The present application relates to the technical field of communication, and more specifically, to a wireless communication method and terminal.

Background technique

Some sidelink communication systems, such as the new radio sidelink (NR SL) system, introduce sidelink multi-carrier transmission, so that terminals can use multiple carriers to transmit sidelink data. In the process of sidelink data transmission through multiple carriers, the sidelink feedback function of the terminal as the receiving end may be activated, so that the terminal can send multiple physical sidelink feedback channels (physical sidelink feedback channels, PSFCH), to feed back the sidelink data transmitted on the multiple carriers. In the above scenario, the terminal serving as the receiving end sometimes needs to transmit multiple PSFCHs at the same time. If the number of PSFCHs that need to be sent simultaneously exceeds the capability of the terminal (for example, the maximum transmission capability), how the terminal should determine the PSFCH to be actually sent is a problem that needs to be solved urgently.

Contents of the invention

The present application provides a wireless communication method and terminal, so that when the number of PSFCHs that the terminal needs to transmit at the same time exceeds the capability of the terminal, the terminal can formulate a reasonable PSFCH transmission scheme.

In a first aspect, a wireless communication method is provided, including: a first terminal receives sidelink data through multiple carriers, wherein the sidelink data on the multiple carriers corresponds to N ₁ PSFCHs, and the N ₁ The time domain positions of the PSFCHs overlap; the first terminal determines the N ₂ PSFCHs to be sent from the N ₁ PSFCHs according to the first information, the N ₁ and the N ₂ are positive integers, and N ₂ ≤ N ₁ ; wherein, the first information includes at least one of the following information: the priority of the N ₁ PSFCHs; the number N ₃ of PSFCHs that the first terminal can transmit simultaneously; the first terminal The maximum transmission power P ₁ of each PSFCH to be transmitted; or, the maximum transmission power P ₂ of the first terminal.

In a second aspect, a wireless communication method is provided, including: the second terminal sends sidelink data to the first terminal through multiple carriers, wherein the sidelink data on the multiple carriers corresponds to N ₁ PSFCHs, and the The time domain positions of the N ₁ PSFCHs overlap; the second terminal determines the N ₂ PSFCHs to be received from the N ₁ PSFCHs according to the first information, and the N ₁ and the N ₂ are positive integers, And N ₂ ≤ N ₁ ; wherein, the first information includes at least one of the following information: the priority of the N ₁ PSFCHs; the number N ₃ of PSFCHs that the first terminal can send simultaneously; the The maximum transmission power P ₁ of each PSFCH transmitted by the first terminal; or, the maximum transmission power P ₂ of the first terminal.

In a third aspect, a wireless communication method is provided, including: the first terminal receives sidelink data through C ₁ carriers, wherein the sidelink data on the C ₁ carriers corresponds to multiple PSFCHs, and the multiple The time domain positions of PSFCHs overlap; the first terminal determines C ₂ carriers from the C ₁ carriers according to the priorities of at least some of the PSFCHs in the plurality of PSFCHs, where C ₂ ≤ C ₃ <C ₁ , C ₃ represents the number of carriers on which the first terminal can simultaneously transmit sidelink data.

In a fourth aspect, a wireless communication method is provided, including: the second terminal sends sidelink data to the first terminal through C ₁ carriers, where the sidelink data on the C ₁ carriers corresponds to multiple PSFCHs, and _The time domain positions of the multiple PSFCHs overlap; the second terminal determines C 2 carriers from the C ₁ carriers according to the priorities of at least some of the PSFCHs in the multiple PSFCHs, where C ₂ ≤ _{C 3} <C ₁ , C ₃ represents the number of carriers on which the first terminal can simultaneously transmit sidelink data.

In a fifth aspect, a terminal is provided, the terminal is a first terminal, and the first terminal includes: a receiving module configured to receive sidelink data through multiple carriers, wherein the sidelink data on the multiple carriers Corresponding to N ₁ PSFCHs, and the time domain positions of the N ₁ PSFCHs overlap; the determination module is used to determine the N ₂ PSFCHs to be sent from the N ₁ PSFCHs according to the first information, and the N ₁ and the N ₂ is a positive integer, and N ₂ ≤ _{N 1} ; wherein, the first information includes at least one of the following information: the priority of the N ₁ PSFCHs; The number N ₃ of PSFCHs; the maximum transmission power P ₁ of each PSFCH transmitted by the first terminal; or the maximum transmission power P ₂ of the first terminal.

According to a sixth aspect, there is provided a terminal, the terminal is a second terminal, and the second terminal includes: a sending module, configured to send sidelink data to the first terminal through multiple carriers, wherein the multiple carriers are The sidelink data corresponds to N ₁ PSFCHs, and the time domain positions of the N ₁ PSFCHs overlap; the determination module is used to determine the N ₂ PSFCHs to be received from the N ₁ PSFCHs according to the first information, The N ₁ and the N ₂ are positive integers, and N ₂ ≤ _{N 1} ; wherein, the first information includes at least one of the following information: the priority of the N ₁ PSFCHs; the first terminal The number N ₃ of PSFCHs that can be sent simultaneously; the maximum transmission power P ₁ of each PSFCH sent by the first terminal; or the maximum transmission power P ₂ of the first terminal.

In a seventh aspect, a terminal is provided, the terminal is a first terminal, and the first terminal includes: a receiving module configured to receive sideline data through C ₁ carriers, wherein the side data on the C ₁ carriers The row data corresponds to multiple PSFCHs, and the time domain positions of the multiple PSFCHs overlap; the determination module is used to determine C ₂ from the C ₁ carriers according to the priorities of at least some PSFCHs in the multiple PSFCHs Carriers, where C ₂ ≤ _{C 3} <C ₁ , and C ₃ represents the number of carriers that the first terminal can simultaneously transmit sidelink data.

In an eighth aspect, a terminal is provided, the terminal is a second terminal, and the second terminal includes: a sending module configured to send sidelink data to the first terminal through C ₁ carriers, wherein the C ₁ The sidelink data on the carrier corresponds to multiple PSFCHs, and the time domain positions of the multiple PSFCHs overlap; the determining module is configured to determine from the C ₁ carriers according to the priorities of at least some PSFCHs in the multiple PSFCHs C ₂ carriers, where C ₂ ≤ _{C 3} < C ₁ , and C ₃ represents the number of carriers that the first terminal can simultaneously transmit sidelink data.

In a ninth aspect, a terminal is provided, including a memory and a processor, the memory is used to store programs, and the processor is used to call the programs in the memory to execute any one of the first to fourth aspects the method described.

In a tenth aspect, an apparatus is provided, including a processor, configured to call a program from a memory, so as to execute the method according to any one of the first aspect to the fourth aspect.

In an eleventh aspect, a chip is provided, including a processor, configured to call a program from a memory, so that a device installed with the chip executes the method according to any one of the first aspect to the fourth aspect.

In a twelfth aspect, a computer-readable storage medium is provided, on which a program is stored, and the program causes a computer to execute the method according to any one of the first aspect to the fourth aspect.

A thirteenth aspect provides a computer program product, including a program, the program causes a computer to execute the method according to any one of the first aspect to the fourth aspect.

A fourteenth aspect provides a computer program, the computer program causes a computer to execute the method according to any one of the first aspect to the fourth aspect.

The embodiment of the present application requires that the terminal as the receiving end (that is, the first terminal mentioned above) consider one or more of the following factors when determining the PSFCH to be actually transmitted: the priority of the PSFCH, the PSFCH that the terminal can transmit at the same time The number N ₃ of the terminal, the maximum transmit power P ₁ of each PSFCH sent by the terminal, and the maximum transmit power P ₂ of the terminal, these factors are helpful for the terminal to formulate a reasonable PSFCH transmission scheme.

Description of drawings

FIG. 1 is an example diagram of a system architecture of a wireless communication system to which an embodiment of the present application can be applied.

Fig. 2 is an example diagram of a scenario of lateral communication within network coverage.

Fig. 3 is an example diagram of a scenario of lateral communication with partial network coverage.

Fig. 4 is an example diagram of a scenario of lateral communication outside network coverage.

FIG. 5 is an example diagram of a broadcast-based lateral communication method.

Fig. 6 is an example diagram of a unicast-based lateral communication manner.

FIG. 7 is an example diagram of a multicast-based lateral communication manner.

FIG. 8A is an example diagram of a time slot structure used in a sidelink communication system.

FIG. 8B is another example diagram of the time slot structure used by the sidelink communication system.

Fig. 9 is an example diagram of a side-tracking feedback process.

Fig. 10 is a diagram illustrating an example of a feedback manner for performing PSFCH feedback on a periodic basis.

FIG. 11 is an example diagram of the corresponding relationship between PSFCH transmission resources and PSSCH resources.

Fig. 12 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.

FIG. 13 is an example diagram of a multi-carrier transmission manner provided by an embodiment of the present application.

FIG. 14 is another example diagram of the multi-carrier transmission mode provided by the embodiment of the present application.

Fig. 15 is a schematic flowchart of a wireless communication method provided by another embodiment of the present application.

Fig. 16 is a structural block diagram of a terminal provided by an embodiment of the present application.

Fig. 17 is a structural block diagram of a terminal provided by another embodiment of the present application.

Fig. 18 is a structural block diagram of a terminal provided by another embodiment of the present application.

Fig. 19 is a structural block diagram of a terminal provided by another embodiment of the present application.

Fig. 20 is a schematic structural diagram of a device provided by an embodiment of the present application.

Detailed ways

Communication System Architecture

FIG. 1 is an example diagram of a system architecture of a wireless communication system 100 to which an embodiment of the present application can be applied. The wireless communication system 100 may include a network device 110 and a terminal 120 . The network device 110 may be a device that communicates with the terminal 120 . The network device 110 may provide communication coverage for a specific geographic area, and may communicate with the terminals 120 located within the coverage area.

FIG. 1 exemplarily shows a network device and a terminal. Optionally, the wireless communication system 100 may include one or more network devices 110 and/or one or more terminals 120 . For a network device 110, the one or more terminals 120 may all be located within the network coverage of the network device 110, or may all be located outside the network coverage of the network device 110, or may be partially located in the network coverage of the network device 110 The other part is located outside the network coverage of the network device 110, which is not limited in this embodiment of the present application.

Optionally, the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.

It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, for example: fifth generation (5th generation, 5G) system or NR, long term evolution (long term evolution, LTE) system, LTE frequency division duplex ( frequency division duplex (FDD) system, LTE time division duplex (time division duplex, TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, and satellite communication systems, and so on.

The terminal in the embodiment of the present application may also be referred to as user equipment (user equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station (mobile station, MS), mobile terminal (mobile Terminal, MT) , a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user device. The terminal in the embodiment of the present application may be a device that provides voice and/or data connectivity to users, and may be used to connect people, objects and machines, such as handheld devices with wireless connection functions, vehicle-mounted devices, and the like. The terminal in the embodiment of the present application may be a mobile phone, a tablet computer (Pad), a notebook computer, a palmtop computer, a mobile internet device (MID), a wearable device, a vehicle, an industrial control (industrial control ), wireless terminals in self driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety Terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc. For example, a terminal may act as a scheduling entity, which provides sidelink signals between terminals in vehicle-to-everything (V2X) or device-to-device communication (device-to-device, D2D), etc. For example, a cell phone and an automobile communicate with each other using sidelink signals. Communication between cellular phones and smart home devices without relaying communication signals through base stations. Optionally, the terminal can be used to act as a base station.

The network device in this embodiment of the present application may be a device for communicating with a terminal, and the network device may also be called an access network device or a wireless access network device, for example, the network device may be a base station. The network device in this embodiment of the present application may refer to a radio access network (radio access network, RAN) node (or device) that connects a terminal to a wireless network. The base station can broadly cover various names in the following, or replace with the following names, such as: Node B (NodeB), evolved base station (evolved NodeB, eNB), next generation base station (next generation NodeB, gNB), relay station, Access point, transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), primary station MeNB, secondary station SeNB, multi-standard wireless (MSR) node, home base station, network controller, access node , wireless node, access point (access piont, AP), transmission node, transceiver node, base band unit (base band unit, BBU), remote radio unit (Remote Radio Unit, RRU), active antenna unit (active antenna unit) , AAU), radio head (remote radio head, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning nodes, etc. A base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, a modem or a chip configured in the aforementioned equipment or device. The base station can also be a mobile switching center, a device that assumes the function of a base station in device-to-device D2D, V2X, and machine-to-machine (M2M) communication, a network-side device in a 6G network, and a base station in a future communication system. functional equipment, etc. Base stations can support networks of the same or different access technologies. The embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.

Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, a helicopter or drone may be configured to serve as a device in communication with another base station.

In some deployments, the network device in this embodiment of the present application may refer to a CU or a DU, or, the network device includes a CU and a DU. A gNB may also include an AAU.

Network equipment and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the air. In the embodiment of the present application, the scenarios where the network devices and terminals are located are not limited.

Sidewalk communication under different network coverage

Sidelink communication refers to communication technology based on sidelinks. Sideline communication can be D2D or V2X, for example. Communication data in a traditional cellular system is received or sent between a terminal and a network device, while sidelink communication supports direct communication data transmission between terminals. Compared with traditional cellular communication, terminal-to-terminal direct communication data transmission can have higher spectrum efficiency and lower transmission delay. For example, the Internet of Vehicles system uses side-travel communication technology.

In sidelink communication, according to the network coverage where the terminal is located, sidelink communication can be divided into sidelink communication within network coverage, sidelink communication with partial network coverage, and sidelink communication outside network coverage.

Fig. 2 is an example diagram of a scenario of lateral communication within network coverage. In the scenario shown in FIG. 2 , both terminals 120 a are within the coverage of the network device 110 . Therefore, both terminals 120a can receive the configuration signaling of the network device 110 (the configuration signaling in this application can also be replaced with configuration information), and determine the sideline configuration according to the configuration signaling of the network device 110 . After both terminals 120a are sidelink configured, sidelink communications can take place on the sidelink.

Fig. 3 is an example diagram of a scenario of lateral communication with partial network coverage. In the scenario shown in FIG. 3 , terminal 120a performs sidelink communication with terminal 120b. The terminal 120a is located within the coverage of the network device 110 , so the terminal 120a can receive the configuration signaling of the network device 110 , and determine the lateral configuration according to the configuration signaling of the network device 110 . The terminal 120b is located outside the coverage of the network and cannot receive the configuration signaling of the network device 110 . In this case, the terminal 120b may determine the sidelink according to pre-configuration (pre-configuration) information and/or information carried in a physical sidelink broadcast channel (PSBCH) sent by the terminal 120a located within the coverage of the network. line configuration. After both the terminal 120a and the terminal 120b perform the sidelink configuration, sidelink communication can be performed on the sidelink.

Fig. 4 is an example diagram of a scenario of lateral communication outside network coverage. In the scenario shown in FIG. 4, both terminals 120b are located outside the network coverage. In this case, both terminals 120b can determine the side row configuration according to the pre-configuration information. After both terminals 120b are configured sidelink, sidelink communication can be performed on the sidelink.

mode of lateral communication

Certain standards or protocols (such as the 3rd Generation Partnership Project (3GPP)) define two modes (or transmission modes) of lateral communication: the first mode and the second mode.

In the first mode, resources of the terminal (resources mentioned in this application may also be referred to as transmission resources, such as time-frequency resources) are allocated by network equipment. The terminal can send data on the sidelink according to the resource allocated by the network device. The network device can allocate resources for a single transmission to the terminal, and can also allocate resources for semi-static transmission to the terminal. The first mode can be applied to a scenario covered by network devices, such as the scenario shown in FIG. 2 above. In the scenario shown in FIG. 2 , the terminal 120a is located within the network coverage of the network device 110 , so the network device 110 can allocate resources used in the sidelink transmission process to the terminal 120a.

In the second mode, the terminal can independently select one or more resources from a resource pool (resource pool, RP). Then, the terminal can perform sidelink transmission according to the selected resource. For example, in the scenario shown in FIG. 4, the terminal 120b is located outside the coverage of the cell. Therefore, the terminal 120b can autonomously select resources from the pre-configured resource pool for sidelink transmission. Alternatively, in the scenario shown in FIG. 2 , the terminal 120a may also autonomously select one or more resources from the resource pool configured by the network device 110 for sidelink transmission.

Data transmission method of side communication

Certain sidelink communication systems (such as LTE-V2X) support broadcast-based data transmission (hereinafter referred to as broadcast transmission). For broadcast transmission, the receiving terminal can be any terminal around the transmitting terminal. Taking FIG. 5 as an example, terminal 1 is a sending terminal, and the receiving terminal corresponding to the sending terminal is any terminal around terminal 1, such as terminal 2-terminal 6 in FIG. 5 .

In addition to broadcast transmission, some communication systems also support unicast-based data transmission (hereinafter referred to as unicast transmission) and/or multicast-based data transmission (hereinafter referred to as multicast transmission). For example, NR-V2X hopes to support autonomous driving. Autonomous driving puts forward higher requirements for data interaction between vehicles. For example, data interaction between vehicles requires higher throughput, lower latency, higher reliability, larger coverage, more flexible resource allocation, etc. Therefore, in order to improve the data interaction performance between vehicles, NR-V2X introduces unicast transmission and multicast transmission.

For unicast transmission, there is generally only one terminal at the receiving end. Taking FIG. 6 as an example, unicast transmission is performed between Terminal 1 and Terminal 2 . Terminal 1 may be a transmitting terminal, and terminal 2 may be a receiving terminal, or terminal 1 may be a receiving terminal, and terminal 2 may be a transmitting terminal.

For multicast transmission, the receiving terminal may be a terminal in a communication group (group), or the receiving terminal may be a terminal within a certain transmission distance. Taking FIG. 7 as an example, terminal 1, terminal 2, terminal 3 and terminal 4 form a communication group. If terminal 1 sends data, other terminals (terminal 2 to terminal 4 ) in the group can all be receiver terminals.

Slot structure for sidebound communication

The communication system can define the frame, subframe or time slot structure of the lateral communication. Some sidelink communication systems define various slot structures. For example, NR-V2X defines two slot structures. One of the two slot structures does not include PSFCH, see FIG. 8A ; the other slot structure of the two slot structures includes PSFCH, see FIG. 8B .

The physical sidelink control channel (PSCCH) in NR-V2X can use the second sidelink symbol of the time slot as the starting position in the time domain, and the PSCCH can occupy 2 or 3 in the time domain symbols (all the symbols mentioned here may refer to orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols). The PSCCH may occupy multiple physical resource blocks (physical resource blocks, PRBs) in the frequency domain. For example, the number of PRBs occupied by the PSCCH can be selected from the following values: {10,12 15,20,25}.

In order to reduce the complexity of the blind detection of the PSCCH by the terminal, usually, in a resource pool, only one kind of number of symbols and number of PRBs is configured for the PSCCH. In addition, since NR-V2X uses subchannels as the minimum granularity for physical sidelink shared channel (PSSCH) resource allocation, the number of PRBs occupied by PSCCH must be less than or equal to the PRBs contained in a subchannel in the resource pool number.

Referring to Figure 8A, for a slot structure that does not include PSFCH, the PSSCH in NR-V2X can use the second side row symbol of the slot as the starting position in the time domain. The last side row symbol in this time slot is used as a guard period (guard period, GP), and the remaining symbols can be mapped to the PSSCH. The first side row symbol in the slot may be a repetition of the second side row symbol. Generally speaking, the terminal serving as the receiving end will use the first side row symbol as a symbol for automatic gain control (automatic gain control, AGC). Therefore, the data on the first side row symbol is usually not used for data demodulation. The PSSCH can occupy K sub-channels in the frequency domain, and each sub-channel can include M consecutive PRBs (the values of K and M can be predefined by the protocol, or pre-configured, or configured by the network device, or depend on the terminal implementation).

FIG. 8B shows a time slot structure including PSFCH, which schematically shows positions of symbols occupied by PSFCH, PSCCH, and PSSCH in a time slot. The main difference between this slot structure and FIG. 8A is that the penultimate symbol and the penultimate symbol in the slot are used to transmit PSFCH, and in addition, a symbol before the symbol used to transmit PSFCH is also used as GP. From the slot structure shown in Figure 8B, it can be seen that in a slot, the last symbol is used as GP, the second-to-last symbol is used for PSFCH transmission, the data on the third-to-last symbol is used for PSFCH transmission The data of the penultimate symbol is the same, that is, the penultimate symbol is used as a symbol for AGC, and the penultimate symbol has the same function as the last symbol, and is also used as a GP. In addition, the first symbol in a slot is used as AGC, the data on this symbol is the same as the data on the second symbol in this slot, PSCCH occupies 3 symbols, and the remaining symbols can be used for PSSCH transmission.

Lateral Feedback Channel

In some communication systems (such as NR-V2X), in order to improve the reliability of sidelink communication, a sidelink feedback channel is introduced. For example, as shown in FIG. 9 , for unicast transmission, terminal 1 (the terminal serving as the sending end) sends sidelink data (including PSCCH and/or PSSCH) to terminal 2 (the terminal serving as the receiving end). After receiving the sidelink data, terminal 2 sends sidelink feedback information to terminal 1 . The sidelink feedback information may be, for example, HARQ feedback information. The HARQ feedback information may include, for example, an acknowledgment (acknowledgment, ACK) and a negative acknowledgment (negative acknowledgment, NACK). Terminal 1 may determine whether retransmission is required according to the sidelink feedback information of terminal 2 . The sidelink feedback information may be carried in a sidelink feedback channel. The sidelink feedback channel may be PSFCH, for example.

During sidewalk communication, sidewalk feedback can be activated or deactivated. For example, sidelink feedback can be activated or deactivated by way of pre-configuration or network configuration. As another example, the sidelink feedback may also be activated or deactivated by the terminal serving as the transmitting end. Still taking FIG. 9 as an example, if the sidelink feedback is activated, the terminal 2 receives the sidelink data sent by the terminal 1, and feeds back sidelink feedback information to the terminal 1 according to the decoding result (or detection result) of the sidelink data. Terminal 1 may decide to send retransmission data or new data to terminal 2 according to the sidelink feedback information of terminal 2 . If the sidelink feedback is deactivated, terminal 2 does not need to send sidelink feedback information, and in this case, terminal 1 may send sidelink data in a blind retransmission manner. For example, for a certain sidelink data to be sent, terminal 1 may directly and repeatedly send the sidelink data K times.

Format of the sidewalk feedback channel

In a sidelink communication system, the PSFCH usually carries 1-bit sidelink feedback information (such as 1-bit HARQ-ACK information). PSFCH usually occupies 2 time-domain symbols in the time domain. For example, continue to refer to FIG. 8B. In this slot structure, the 2 time-domain symbols occupied by PSFCH in the time domain are the penultimate symbol and the penultimate symbols, where the second-to-last symbol carries sideline feedback information, and the data on the third-to-last symbol is a copy of the data on the second-to-last symbol, but the third-to-last symbol is used as an AGC. In addition, PSFCH usually occupies 1 PRB in the frequency domain. Other information related to the format of the sidelink feedback channel, such as the positions of the PSCCH, PSSCH, and PSFCH in the time slot, has been described in detail with reference to FIG. 8 , and will not be repeated here.

Resources for sidewalk feedback channels

In order to reduce the overhead of the PSFCH, a sidelink feedback resource (or PSFCH transmission resource) for carrying the PSFCH may be configured in one of the N time slots. In other words, the period of the sidelink feedback resource can be set as N (the unit is a time slot). The value of N may be 1, 2 or 4, for example. The value of N may be determined in a preconfigured manner, or the value of N may also be configured by a network device.

Next, with reference to FIG. 10 , taking N=4 as an example, the feedback mechanism of PSFCH will be illustrated. Referring to Figure 10, time slot 3 and time slot 7 are configured with sidelink feedback resources for carrying PSFCH (the interval between time slot 3 and time slot 7 is N, that is, 4 time slots), so as to control the sidelink communication process The decoding result of the PSSCH transmitted in the middle is fed back. Assuming that the minimum time interval between the PSSCH and its associated PSFCH is 2 slots, the sidelink feedback information of the PSSCH transmitted in

slots

2, 3, 4, and 5 is all transmitted in slot 7. Therefore, the time slot {2, 3, 4, 5} can be regarded as a time slot set, and the PSFCHs corresponding to the PSSCHs transmitted in the time slot set are located in the same time slot, that is, they are all located in time slot 7.

The resources of the sidelink feedback channel may be determined according to the time slot where the PSSCH (used to carry the sidelink data) is located and the starting position of the occupied subband. In the following, with reference to FIG. 11 , taking N=4 as an example, the corresponding relationship between PSFCH transmission resources and PSSCH resources will be illustrated. Referring to FIG. 11 , time slot 7 is configured with sidelink feedback resources for carrying PSFCH, and the sidelink feedback information of PSSCH transmitted in

time slots

2, 3, 4, and 5 is all transmitted in time slot 7. In addition, the PSSCHs transmitted at the same sub-band starting position in different time slots respectively correspond to different PSFCH resources in the feedback time slots.

Some communication systems (such as NR-V2X) support terminals to send multiple PSFCHs on one symbol. The maximum number of PSFCHs allowed to be sent by a terminal at the same time is generally not allowed to exceed the configured maximum number of PSFCHs to be sent N _max,PSFCH . Therefore, the terminal generally first determines the number N _sch,Tx,PSFCH of PSFCHs to be transmitted in the time slot where the PSFCH is located. Then, the terminal can determine the number N Tx,PSFCH of PSFCHs actually sent according to N _max,PSFCH and N _sch, _Tx,PSFCH . In addition, the terminal may also determine the transmit power of each PSFCH in the N _Tx,PSFCH PSFCHs. Generally speaking, the N _Tx,PSFCH PSFCHs equally share the maximum transmit power of the terminal.

Sidebound Multicarrier Transmission

In order to improve the throughput of the sidelink communication system, it can be considered to introduce multi-carrier transmission on the sidelink. Therefore, some communication systems (such as the Internet of Vehicles system of Rel-15) introduce a multi-carrier transmission scheme, so that the terminal can transmit sidelink data through one or more carriers. Before transmitting the sidelink data, the terminal may perform carrier selection first. For example, the terminal may select a carrier according to a channel busy ratio (CBR) of each carrier. For example, the CBR can reflect the channel occupancy situation in the past 100 ms. The lower the CBR of a carrier, the lower the resource occupancy rate of the carrier and the more available resources. Correspondingly, the higher the CBR, the higher the resource occupancy rate of the carrier or the more congested the carrier is, and transmission collision and interference are likely to occur on the transmission side of the carrier. As an example, the terminal may select one or more carriers with a lower CBR for data transmission.

If sidelink multi-carrier transmission is introduced in a sidelink communication system (such as NR SL), a certain terminal can receive sidelink data transmitted on multiple carriers. In the process of sidelink data transmission through multiple carriers, the sidelink feedback function of the terminal as the receiving end may be activated, so that the terminal can send multiple PSFCHs through the multiple carriers to support the transmission of the multiple carriers. Feedback of lateral data. If the multiple PSFCHs overlap in the time domain (for example, they are located in the same time slot or the same time domain symbol), then the terminal needs to use multiple carriers to send multiple PSFCHs simultaneously.

However, the number of carriers that the terminal needs to use at the same time and/or the number of PSFCHs that the terminal needs to transmit at the same time may exceed the capability of the terminal (such as the maximum transmission capability of the terminal). When this situation occurs, how the terminal should select the carrier for sending the PSFCH and/or how to determine the PSFCH to be sent is a problem to be solved.

In view of the above problems, this application proposes two embodiments. Among them, Embodiment 1 aims to solve the problem of how the terminal should select the carrier for sending PSFCH if the number of carriers that the terminal as the receiving end needs to use simultaneously exceeds the capability of the terminal in the process of performing sidelink feedback based on multiple carriers. Embodiment 2 aims to solve the problem of how the terminal should determine the PSFCH to be sent if the number of PSFCHs to be sent by the terminal as the receiving end exceeds the capability of the terminal during the sidelink feedback based on multiple carriers.

For ease of understanding, some concepts that may be involved in the embodiments of the present application are firstly introduced below, and then Embodiment 1 and Embodiment 2 are described in detail in turn.

1. Priority of PSFCH

The priority of the PSFCH may be determined by the priority of the PSSCH corresponding to (or associated with) the PSFCH. The PSSCH corresponding to the PSFCH means that the sidelink feedback information carried by the PSFCH is the sidelink feedback information for the PSSCH. For example, if the sidelink feedback information carried by the PSFCH is ACK, it means that the decoding of the PSSCH corresponding to the PSFCH is successful; if the sidelink feedback information carried by the PSFCH is NACK, it means that the decoding of the PSSCH corresponding to the PSFCH fails. Further, the priority of the PSSCH may be determined by priority information carried in sidelink control information (SCI) for scheduling the PSSCH. The priority of PSFCH can be pre-divided into multiple levels. Taking P as an example to represent the priority of the PSFCH, then P=i may represent that the priority of the PSFCH is i. i can be a positive integer greater than or equal to 1. The lower the value of i, the higher the priority of the PSFCH. For example, i=1, it means that the priority of the PSFCH is the highest priority. Of course, if the priority of PSFCH is expressed in other similar ways, it should also be covered within the protection scope of this application. For example, P=i indicates that the priority of PSFCH is i, where i can be an integer greater than or equal to 0 , at this time, i=0 indicates that the priority of the PSFCH is the highest priority.

2. The number N of PSFCHs that the terminal can send simultaneously ₃

The number N ₃ of PSFCHs that the terminal can transmit simultaneously may also be represented by N _max,PSFCH . N ₃ can be configured through high-layer signaling (or high-layer parameters). The number of PSFCHs actually sent by the terminal should be less than or equal to N ₃ .

3. The maximum transmit power P ₁ of each PSFCH sent by the terminal

In some cases, the terminal needs to determine the maximum transmit power P ₁ of each PSFCH. For example, when the terminal is configured to perform power control on the transmit power of the PSFCH (including performing power control on the transmit power of the PSFCH according to the downlink path loss, and/or performing power control on the transmit power of the PSFCH according to the sidelink path loss) In the case of control), it is usually necessary to determine the maximum transmission power of each PSFCH sent by the terminal as P ₁ . The maximum transmission power P ₁ of each PSFCH sent by the terminal may also be represented by P _PSFCH,one . The unit of P ₁ may be decibel milliwatt, ie dBm. When the terminal determines the maximum transmission power P ₁ of each PSFCH, the transmission power of each PSFCH sent by the terminal is generally not allowed to exceed P ₁ .

Taking the power control of PSFCH transmit power according to the downlink path loss as an example, the maximum transmit power _P1 of each PSFCH transmitted by the terminal may be determined based on downlink power control parameters. The downlink power control parameter may be configured by a network device. For example, when the terminal is within the coverage of the network device, the network device may configure downlink power control parameters for the terminal. The downlink power control parameter may be the parameter dl-P0-PSFCH.

After the terminal is configured with downlink power control parameters, the maximum transmission power P ₁ of each PSFCH sent by the terminal can be determined based on the following formula (1) (that is, P _PSFCH,one,DL in formula (1)):

P _PSFCH,one,DL ＝P _O,PSFCH,DL +10log ₁₀ (2 ^μ )+α _PSFCH,DL ·PL _DL (1)

In formula (1), P _0,PSFCH,DL represents a parameter for power control based on downlink path loss configured by a network device through high-layer signaling, that is, dl-P0-PSFCH. α _PSFCH,DL represents a downlink path loss compensation factor used for power control on the PSFCH, and α _PSFCH,DL may be configured by a network device through high-layer signaling. For example, the value of α _PSFCH,DL may be determined by the high layer configuration parameter dl-Alpha-PSFCH. If the terminal is not configured with dl-Alpha-PSFCH, the value of α _PSFCH may be 1. PL _DL represents the downlink path loss estimated by the terminal. μ represents a parameter related to the spacing of sideline subcarriers, and the relationship between μ and the spacing of subcarriers can be referred to in Table 1 below.

Table 1

μmu	子载波间隔Δf＝2 ^μ15[kHz] Subcarrier spacing Δf=2 ^μ 15[kHz]
00	1515
11	3030
22	6060
33	120120

Similarly, taking the power control of the transmit power of PSFCH according to the sidelink path loss as an example, the maximum transmit power P ₁ of each PSFCH sent by the terminal can be determined based on formula (2) (that is, in formula (2) P _PSFCH,one,SL ):

P _PSFCH,one,SL ＝P _O,PSFCH,SL +10log ₁₀ (2 ^μ )+α _PSFCH,SL ·PL _SL (2)

In the formula (2), P _O,PSFCH,SL represent parameters for power control based on sidelink path loss configured through pre-configuration or high-level signaling of network equipment. α _PSFCH,SL represents a sidelink path loss compensation factor used for power control of the PSFCH, and α _PSFCH,SL can be configured through pre-configuration or high-layer signaling of the network device. PL _SL represents the lateral path loss estimated by the terminal. μ represents a parameter related to the spacing of sideline subcarriers, and the relationship between μ and the spacing of subcarriers can be referred to in Table 1 above.

Taking the power control of the transmit power of PSFCH according to the downlink path loss and the side link path loss as an example, the maximum transmit power _P1 of each PSFCH sent by the terminal can be determined based on formula (3) (that is, formula (3 P _PSFCH,one in ):

P _PSFCH,one ＝min(P _PSFCH,one,DL ,P _PSFCH,one,SL ) (3)

For the calculation method of P _PSFCH,one,DL in the formula (3), refer to the foregoing formula (1), and for the calculation method of P _{PSFCH,one,SL,} refer to the foregoing formula (2).

4. The maximum transmission power of the terminal P ₂

The maximum transmit power P ₂ of the terminal may also be represented by _PCMAX , and the unit of P ₂ may be decibel milliwatt, that is, dBm. P ₂ may represent the maximum transmission power determined according to the level or category of the terminal. Alternatively, P ₂ may represent the configured maximum transmit power of the terminal. The configured maximum transmit power of the terminal may be determined according to pre-configuration information or network configuration information, for example, the maximum transmit power of the terminal allowed in the resource pool is configured in the resource pool configuration information. If P ₂ represents the configured maximum transmit power of the terminal, P ₂ may be determined according to the resource pool configuration parameter sl-MaxTransPower or sl-MaxTxPower.

It should be understood that the maximum transmit power _P1 of each PSFCH determined according to the above method cannot exceed the maximum transmit power _P2 of the terminal ( _P2 is the maximum transmit power determined according to the level or category of the terminal, or the configured maximum transmit power of the terminal) .

On the basis of the above concepts, Embodiment 1 and Embodiment 2 are described below respectively.

Example 1

FIG. 12 is a schematic flowchart of the wireless communication method provided by Embodiment 1. The method in FIG. 12 may be executed by the first terminal and the second terminal. The first terminal and the second terminal are two terminals performing side communication. The first terminal is the receiving end of the PSSCH, and the second terminal is the sending end of the PSSCH. The first terminal and the second terminal may be, for example, the terminal 120 in FIG. 1 to FIG. 4 . The method in FIG. 12 includes step S1210 and step S1220, and these steps will be described in detail below.

In step S1210, the first terminal receives sidelink data through C ₁ carriers. The sidelink data may, for example, refer to the data carried in the PSSCH, or it can also be said that the sidelink data is the PSSCH. The sidelink data on C ₁ carrier corresponds to N PSFCHs (N is a positive integer greater than 1). The time domain positions of the N PSFCHs overlap. For example, the N PSFCHs may be located in the same time slot; or, the N PSFCHs may be located in the same one or more symbols. In this embodiment, the number C ₁ of carriers carrying sidelink data is greater than the number C ₃ of carriers capable of simultaneously sending sidelink data (the sidelink data includes PSSCH or PSFCH) by the first terminal, therefore, the first terminal needs to perform Carrier selection.

In step S1220, the first terminal determines (or selects) C ₂ carriers from C ₁ carriers according to priorities of at least some PSFCHs in the N PSFCHs. The number C ₂ of carriers determined by the first terminal from the C ₁ carriers needs to be less than or equal to the number C ₃ of carriers that the first terminal can simultaneously transmit sidelink data.

In the embodiment of the present application, the terminal as the receiving end (that is, the first terminal above) selects C2 carriers for PSFCH transmission from the C1 carriers according to the priority of PSFCH, so that the number of carriers for transmitting PSFCH is the same as that of the terminal. ability to match.

In some embodiments, the first terminal may determine C ₂ carriers from C ₁ carriers according to priorities of all PSFCHs in the N PSFCHs. For example, the first terminal may select the N PSFCHs in descending order of priorities, so that the priorities of the PSFCHs on the selected _C2 carriers are greater than or equal to those of the PSFCHs on the remaining carriers that have not been selected. priority.

In some other embodiments, the first terminal may determine C ₂ carriers from C ₁ carriers according to the priorities of target PSFCHs in the N PSFCHs (which may be some PSFCHs in the N PSFCHs). The target PSFCH may include (or only include) the PSFCH with the highest priority corresponding to each carrier in the C ₁ carriers. In other words, the first terminal may perform carrier selection according to the highest priority of the PSFCH on each of the C ₁ carriers.

Two specific examples are given below with reference to FIG. 13 and FIG. 14 .

Referring to Figure 13, the first terminal and the second terminal are configured to transmit sidelink data based on 4 carriers, and each carrier is configured with PSFCH resources, and the time domain positions of the PSFCH resources configured on the 4 carriers The same (that is, the PSFCH resources on the four carriers are located in slot 3, slot 7 and slot 11). In addition, on the 4 carriers, the minimum time interval between the PSSCH and the PSFCH corresponding to the PSSCH is 2 time slots. Therefore, for the PSSCHs sent on

time slots

2, 3, 4, and 5, the corresponding PSFCHs are located in time slot 7. When the second terminal as the sending end sends PSSCH to the first terminal through 4 carriers in

time slots

2, 3, 4 and 5 respectively, the first terminal needs to send PSFCH to the second terminal simultaneously in time slot 7 through 4 carriers. If the maximum transmission capability of the first terminal can support the first terminal to transmit sidelink data on a maximum of 2 carriers at the same time, then sending PSFCH through 4 carriers at the same time in time slot 7 exceeds the maximum transmission capability of the first terminal . In this case, the first terminal may perform carrier selection in descending order of the PSFCH priorities on the four carriers, so that the number of selected carriers does not exceed the maximum transmission capability of the first terminal, that is, no more than 2 carrier. For example, in FIG. 13, since the priority of PSFCH is determined by the priority of the PSSCH associated with it, the priorities of PSFCH on

carriers

0, 1, 2, and 3 are 1, 3, 5, and 7 respectively, and the first terminal Carrier 0 and carrier 1 may be selected in descending order of priority, and the PSFCH is transmitted on the two carriers.

Referring to Figure 14, the first terminal and the second terminal are configured to transmit sidelink data based on 4 carriers, and PSFCH resources are configured on each carrier, and the time of PSFCH resources configured on the 4 carriers is The domain positions are the same (that is, the PSFCH resources on the four carriers are located in slot 3, slot 7, and slot 11). In addition, on the 4 carriers, the minimum time interval between the PSSCH and the PSFCH corresponding to the PSSCH is 2 time slots. Therefore, as shown in FIG. 14 , for the PSSCHs transmitted on

time slots

2, 3, 4, and 5, the corresponding PSFCHs are located in time slot 7. In the example shown in Figure 14, on carrier 0, the second terminal transmits PSSCH at time slot 2 and time slot 4, and the priorities are P=1 and P=2 respectively; Slot 3 and time slot 5 send PSSCH, the priorities are P=3 and P=7 respectively; on carrier 2, the second terminal sends PSSCH in time slot 4, the priority is P=5; on carrier 3, the second The terminal sends the PSSCH in time slot 5, and the priorities are respectively P=7. In this way, the first terminal needs to send the PSFCH through 4 carriers in time slot 7. Specifically, the first terminal needs to send 2 PSFCHs on carrier 0, and the priorities of the 2 PSFCHs are 1 and 2 respectively; the first terminal needs to send 2 PSFCHs on carrier 1, and the priorities of the 2 PSFCHs are The priorities are 3 and 7 respectively; the first terminal needs to send a PSFCH on carrier 2, and the priority of the PSFCH is 5; the first terminal needs to send a PSFCH on carrier 3, and the priority of the PSFCH is 7. If the maximum transmission capability of the first terminal can support the first terminal to transmit sidelink data on a maximum of 2 carriers at the same time, then sending PSFCH through 4 carriers simultaneously in time slot 7 exceeds the maximum transmission capability of the first terminal. Therefore, the first terminal can perform carrier selection according to the priority of the PSFCH on the four carriers in descending order, so that the number of selected carriers does not exceed the maximum transmission capability of the first terminal, that is, no more than two carriers. When performing carrier selection, the first terminal may perform carrier selection in descending order of the highest priority of the PSFCH on each carrier. For example, the highest priority of the two PSFCHs on carrier 0 is 1, the highest priority of the two PSFCHs on carrier 1 is 3, and the highest priorities of the PSFCHs on carrier 2 and carrier 3 are 5 and 7, respectively. To sum up, the first terminal may select carrier 0 and carrier 1 in descending order of the highest priority of PSFCH on each carrier, and transmit PSFCH on the two carriers.

Example 2

FIG. 15 is a schematic flowchart of the wireless communication method provided by Embodiment 2. The method in FIG. 15 may be executed by the first terminal and the second terminal. The first terminal and the second terminal are two terminals performing side communication. The first terminal is the receiving end of the PSSCH, and the second terminal is the sending end of the PSSCH. The first terminal and the second terminal may be, for example, the terminal 120 in FIG. 1 to FIG. 4 .

In step S1510, the first terminal receives the sidelink data through multiple carriers, for example, the sidelink data is carried in the PSSCH. The multiple carriers may be all carriers on which the first terminal performs data reception. Alternatively, the plurality of carriers may be C ₂ carriers determined (or selected) from C ₁ carriers according to Embodiment 1 or other methods, where C ₂ and C ₁ are both positive integers, and C ₂ ≤ C ₁ .

The sidelink data on multiple carriers may refer to the PSSCH transmitted by the multiple carriers. The sidelink data on the multiple carriers may correspond to N ₁ PSFCHs (or N _{sch, Tx, PSFCH} PSFCHs). N ₁ may represent the number of PSFCHs that need to be sent simultaneously. The time domain positions of the N ₁ PSFCHs overlap. For example, the N ₁ PSFCHs may be located in the same time slot; or, the N ₁ PSFCHs may be located in the same one or more symbols.

In step S1520, the first terminal determines (or selects) N ₂ PSFCHs (or _{NTx, PSFCH} PSFCHs) to be transmitted from N ₁ PSFCHs according to the first information. N ₂ may represent the number of PSFCHs actually (or to be) sent by the first terminal, both N ₁ and N ₂ are positive integers, and N ₂ ≤ _{N 1} . The sum of the transmit powers of the N ₂ PSFCHs is less than or equal to the maximum transmit power P ₂ of the first terminal. The transmit power of the N ₂ PSFCHs may be the same. For example, the transmit power of each PSFCH in the N ₂ PSFCHs may be the average value obtained after the maximum transmit power P ₂ of the first terminal is distributed evenly to the N ₂ PSFCHs.

The embodiment of the present application requires that the terminal as the PSSCH receiver (that is, the first terminal mentioned above) consider one or more of the following factors when determining the PSFCH to be actually transmitted: the priority of the PSFCH, the The number N ₃ of PSFCHs, the maximum transmission power P ₁ of each PSFCH sent by the terminal, and the maximum transmission power P ₂ of the terminal, these factors are helpful for the terminal to formulate a reasonable PSFCH transmission scheme.

As mentioned above in step S1520, the first terminal may determine the N ₂ PSFCHs to be sent from the N ₁ PSFCHs according to the first information. The content of the first information may be selected according to actual conditions, which is not specifically limited in this embodiment of the present application. For example, in some embodiments, the first information may include at least one of the following information: the priority of N ₁ PSFCHs; the number N ₃ of PSFCHs that can be sent simultaneously by the first terminal; each PSFCH sent by the first terminal The maximum transmit power P ₁ of the first terminal; or, the maximum transmit power P ₂ of the first terminal.

As an example, the first information may include priorities of N ₁ PSFCHs. For example, the first terminal may select N ₂ PSFCHs from the N ₁ PSFCHs in descending order of priorities of the N ₁ PSFCHs.

As yet another example, the first information may include the priorities of N ₁ PSFCHs and the number N ₃ of PSFCHs that can be sent simultaneously by the first terminal. For example, when N ₁ >N ₃ , the first terminal may select N ₂ PSFCHs from the N ₁ PSFCHs in descending order of priorities of the N ₁ PSFCHs, so that N ₂ ≤ _{N 3} .

As yet another example, the first information may include the priorities of N ₁ PSFCHs, the number N ₃ of PSFCHs that the first terminal can transmit simultaneously, the maximum transmission power P ₁ of each PSFCH transmitted by the first terminal, and the The maximum transmit power P ₂ . For example, the first terminal may select N ₂ PSFCHs from N ₁ PSFCHs according to one or more of the following principles: the transmission power of each PSFCH sent by the first terminal does not exceed P ₁ (each PSFCHs can use the same transmission power); the total transmission power of N ₂ PSFCHs does not exceed P ₂ ; and if the total transmission power of N ₂ PSFCHs exceeds P ₂ , the first terminal determines the actual transmission power according to the priority of PSFCH The number N ₂ of PSFCHs.

In some embodiments, in different scenarios, factors considered by the first terminal for selecting N ₂ PSFCHs from N ₁ PSFCHs (ie, content of the first information) may be different. For example, in the case where the first terminal is configured to perform power control on the transmit power of PSFCH, when the first terminal selects N ₂ PSFCHs, the first terminal needs to consider the priorities of N ₁ PSFCHs, and/or the first Factors such as the number N ₃ of PSFCHs that a terminal can transmit at the same time, and power-related factors (such as the maximum transmission power P ₁ of each PSFCH transmitted by the first terminal, and/or the maximum transmission power P of the first terminal) can also be further considered. ₂ and other factors). For another example, when the first terminal is not configured to perform power control on the transmit power of the PSFCH, when the first terminal selects N ₂ PSFCHs, it may ignore power-related factors and only consider the priorities of the N ₁ PSFCHs , and/or the number N ₃ of PSFCHs that the first terminal can send simultaneously.

Embodiment 2 will be illustrated in detail below in conjunction with two more specific embodiments. Embodiment 2-1 below may be applied to a scenario where the first terminal is not configured to perform power control on the transmit power of the PSFCH (the power control mentioned here may include power control for downlink path loss, and/or Or, sidelink power control for sidelink path loss); Embodiment 2-2 may be applied to a scenario where the first terminal is configured to perform power control on PSFCH transmission power. Of course, this embodiment of the present application is not limited thereto. For example, regardless of whether the first terminal is configured to perform power control on the transmit power of PSFCH, N ₂ PSFCHs can be selected from N ₁ PSFCHs in the manner of Embodiment 2-1. .

Example 2-1

The first terminal may select N ₂ PSFCHs from the N ₁ PSFCHs in descending order of priorities of the N ₁ PSFCHs. There may also be multiple specific ways for the first terminal to select N ₂ PSFCHs from the N ₁ PSFCHs in descending order of priorities of the N ₁ PSFCHs, and two possible ways are given below.

Mode 1: The first terminal may autonomously select N ₂ PSFCHs from the N ₁ PSFCHs in descending order of priorities of the N ₁ PSFCHs. That is to say, the value of N ₂ may be determined autonomously by the first terminal (for example, determined based on terminal implementation (implementation) of the first terminal). For example, the first terminal may autonomously select the value of N ₂ from 1 to N ₃ (the number of PSFCHs that the first terminal can transmit simultaneously).

Further, in mode 1, the first terminal may use the following formula (4) to determine the transmit power P _PSFCH (in dBm) of each PSFCH sent by the first terminal:

P _PSFCH ＝P ₂ -10log ₁₀ (N ₂ ) (4)

Mode 2: The first terminal can select N ₂ PSFCHs from the N ₁ PSFCHs in descending order of the priorities of the N ₁ PSFCHs, where the value of N ₂ can be equal to the smaller value of N ₁ and N ₃ . For example, when N ₁ ≤ _{N 3} , N ₂ can be equal to N ₁ ; when N ₁ >N ₃ , N ₂ can be equal to N ₃ .

Further, in mode 2, the first terminal may use the following formula (5) to determine the transmit power P _PSFCH (in dBm) of each PSFCH sent by the first terminal:

P _PSFCH ＝P ₂ -10log ₁₀ (min(N ₁ ,N ₃ )) (5)

Referring to Figure 14 again, if the first terminal supports sending sidelink data on two carriers at the same time, and the first terminal selects carrier 0 and carrier 1 to send sidelink data. Assume that the number of PSFCHs that the first terminal can transmit at the same time is 2, but the total number of PSFCHs to be transmitted on carrier 0 and carrier 1 is 4. In this case, the first terminal needs to select at most 2 PSFCHs from the 4 PSFCHs again. PSFCH for transmission. It can be seen from Figure 14 that the priorities of the PSFCHs on carrier 0 and carrier 1 are 1, 2, 3, and 7 respectively, then the first terminal can select the actual transmitted PSFCH from the 4 PSFCHs according to the priorities of the 4 PSFCHs. PSFCH.

For example, if PSFCH selection is performed according to the above-mentioned method 1, the first terminal may independently select PSFCH based on the terminal, so that the number of selected PSFCHs is less than or equal to the number supported by its capability. For example, the first terminal may select only one PSFCH for transmission. In this case, the first terminal may select the PSFCH with the highest priority for transmission according to the priorities of the PSFCHs on carrier 0 and carrier 1, that is, the first The terminal may select the PSFCH with priority 1 on carrier 0 to transmit.

For another example, if PSFCH selection is performed according to the above-mentioned method 2, the first terminal may select the maximum number of PSFCHs that its capability can support, that is, select 2 PSFCHs for transmission. In this case, the first terminal may select the two PSFCHs with the highest priority for transmission according to the priorities of the PSFCHs on carrier 0 and carrier 1, that is, the first terminal may select the priority on carrier 0 as 1 and The PSFCH on carrier 2 is not selected for transmission, but the PSFCH on carrier 1 is not selected for transmission. If the first terminal supports simultaneous transmission of three PSFCHs, the first terminal may select the PSFCHs with

priorities

1 and 2 on carrier 0 and the PSFCH with priority 3 on carrier 1 for transmission.

In some implementations, Embodiment 2-1 may be applied to a scenario where the first terminal is not configured to perform power control on the transmit power of the PSFCH. In other words, when the first terminal is not configured to perform power control on the PSFCH transmission power, the solution in Embodiment 2-1 may be used to select the PSFCH to be actually transmitted.

Example 2-2

In Embodiment 2-2, the first terminal may first consider the relationship between _N1 and _N3 .

For example, if N ₁ ≤ N ₃ , the first terminal may directly select N ₂ PSFCHs from N ₁ PSFCHs according to the relationship between P ₂ and P ₄ . Wherein, P ₄ refers to the total transmission power of the N ₁ PSFCHs under the condition that the transmission powers of the N ₁ PSFCHs are all P ₁ . P ₄ can be determined using the following formula: P ₁ +10log ₁₀ (N ₂ ).

For another example, _if N ₁ >N ₃ , the first terminal can _first select N ₃ PSFCHs with the highest priority from N ₁ PSFCHs; N ₂ PSFCHs are selected from _{the 3} PSFCHs. Wherein, P ₅ refers to the total transmission power of the N ₃ PSFCHs under the condition that the transmission powers of the N ₃ PSFCHs are all P ₁ . P ₅ can be determined using the following formula: P ₁ +10log ₁₀ (N ₃ ).

For ease of understanding, the following sub-cases are discussed.

Case 1: N ₁ ≤ _{N 3} , and P ₄ ≤ P ₂ (that is, when the transmission power of N ₁ PSFCHs is set to P ₁ , the N ₁ PSFCHs The total transmit power does not exceed the maximum transmit power of the first terminal)

In case 1, the first terminal may choose to send N ₁ PSFCHs simultaneously (ie N ₂ =N ₁ ). Further, in case 1, the first terminal may set the transmit power of each PSFCH to the maximum transmit power P ₁ allowed by the PSFCH.

Case 2: N ₁ ≤ _{N 3} , and P ₄ > P ₂ (that is, when the transmission power of N ₁ PSFCHs is set to P ₁ , the N ₁ PSFCHs The total transmit power exceeds the maximum transmit power of the first terminal)

In case 2, the first terminal may select N ₂ PSFCHs from the N ₁ PSFCHs in descending order of priorities of the N ₁ PSFCHs. For example, the first terminal may select N _{2 PSFCHs from the N 1} _PSFCHs in descending order of the priorities of the N ₁ PSFCHs, so that the value of N ₂ satisfies

Wherein, M _i represents the number of PSFCHs corresponding to priority i among the N ₁ PSFCHs, and the value of i is from 1 to K. It should be understood that the priority i=1 represents the highest priority. If the priority i=0 means the highest priority, the value of the above N ₂ satisfies

Wherein, M _i represents the number of PSFCHs corresponding to priority i among the N ₁ PSFCHs, and the value of i is from 0 to K-1. The following takes the value of i ranging from 1 to K as an example for illustration, and the method of this embodiment is also applicable to the situation that the value of i ranges from 0 to K-1.

The value of K can be determined as follows: if K exists such that

satisfies at least one optional value, then the value of K is the maximum value of the at least one optional value. If K does not exist such that

Satisfied optional values, then K and

The values are all set to 0. In this case, the first terminal may select at least one PSFCH from A PSFCHs corresponding to the first priority among the N ₁ PSFCHs, that is, 1≤N ₂ ≤A. The first priority refers to the highest priority among the N ₁ PSFCHs, for example, it may refer to priority 1. A represents the number of PSFCHs corresponding to the first priority among the N ₁ PSFCHs.

Further, in case 2, the first terminal may set the transmit power of each of the N ₂ PSFCHs to the smaller value of P ₁ and P ₃ . Wherein, P ₃ represents the average value obtained after P ₂ is evenly distributed to N ₂ PSFCHs.

Case 3: N ₁ > N ₃ , and P ₅ ≤ _{P 2} (that is, when the transmission power of the N ₃ PSFCHs is set to P ₁ , the N ₃ PSFCHs The total transmit power does not exceed the maximum transmit power of the first terminal)

_In case 3, the first terminal may first select N ₃ PSFCHs from the N ₁ PSFCHs in descending order of priorities of the N 1 PSFCHs. Then, the first terminal can simultaneously send the N ₃ PSFCHs (that is, N ₂ =N ₃ ). Further, in case 3, the first terminal may set the transmit power of each PSFCH to the maximum transmit power P ₁ allowed by the PSFCH.

Situation 4: N ₁ > N ₃ , and P ₅ > P ₂ (that is, when the transmission power of the N ₃ PSFCHs is set to P ₁ , the N ₃ PSFCHs The total transmit power exceeds the maximum transmit power of the first terminal)

In case 4, the first terminal may first select N ₃ PSFCHs from the N ₁ PSFCHs in descending order of priorities of the N ₁ PSFCHs. Then, the first terminal may select N ₂ PSFCHs from the N ₃ PSFCHs in descending order of priorities of the N ₃ PSFCHs. For example, the first terminal may select N 2 PSFCHs from the N ₃ PSFCHs in descending order of the priorities of the N ₃ PSFCHs _, so that the value of N ₂ satisfies

The value of K can be determined as follows: if K exists such that

satisfies at least one optional value, then the value of K is the maximum value among at least one optional value. If K does not exist such that

Satisfied optional values, then K and

Further, in case 4, the first terminal may set the transmit power of each of the N ₂ PSFCHs to the smaller value of P ₁ and P ₃ . Wherein, P ₃ represents the average value obtained after P ₂ is evenly distributed to N ₂ PSFCHs.

In some embodiments, embodiment 2-2 can be applied to the first terminal configured to perform power control on the transmit power of PSFCH (the power control may include power control for downlink path loss and/or for side sidelink power control based on the path loss of the uplink) scenario. In other words, when the first terminal is configured to perform power control on the PSFCH transmission power, the solution in Embodiment 2-2 may be used to select the PSFCH to be actually transmitted.

It should be noted that the aforementioned second terminal may be one terminal, or may include multiple terminals. For example, the first terminal and the second terminal may perform sidelink data transmission through 4 carriers, the second terminal includes two terminals, and each terminal may perform sidelink communication with the first terminal through 2 carriers. The above mainly describes how the first terminal determines the carrier for sending PSFCH and how to determine the actual PSFCH to be sent from the perspective of the first terminal. Similarly, the second terminal can determine which carrier or carriers to use according to the same or similar logic as the first terminal. Receive the PSFCH on.

The method embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 15 , and the device embodiment of the present application is described in detail below in conjunction with FIG. 16 to FIG. 20 . It should be understood that the descriptions of the method embodiments correspond to the descriptions of the device embodiments, therefore, for parts not described in detail, reference may be made to the foregoing method embodiments.

Fig. 16 is a structural block diagram of a terminal provided by an embodiment of the present application. The terminal 1600 in FIG. 16 may be the aforementioned first terminal, and the first terminal is the receiving end of the PSSCH. The terminal 1600 may include a receiving module 1610 and a determining module 1620 .

The receiving module 1610 can be used to receive sidelink data through multiple carriers. The sidelink data on the multiple carriers correspond to N ₁ PSFCHs, and the time domain positions of the N ₁ PSFCHs overlap.

The determining module 1620 may be configured to determine N ₂ PSFCHs to be sent from the N ₁ PSFCHs according to the first information. N ₁ and N ₂ are positive integers, and N ₂ ≦ _{N 1} .

The first information includes at least one of the following information: the priority of N ₁ PSFCHs; the number N ₃ of PSFCHs that the terminal 1600 can transmit simultaneously; the maximum transmission power P ₁ of each PSFCH transmitted by the terminal 1600; or, the terminal The maximum transmission power P ₂ of 1600.

Optionally, the N ₂ PSFCHs are selected in descending order of the priorities of the N ₁ PSFCHs.

Optionally, 1≤N ₂ ≤N ₃ ; or, N ₂ is equal to the smaller value of N ₁ and N ₃ .

Optionally, the transmit powers of the N ₂ PSFCHs are all equal to P ₃ , where P ₃ represents an average value obtained after P ₂ is evenly allocated to the N ₂ PSFCHs.

Optionally, the terminal 1600 is not configured to perform power control on the transmit power of the PSFCH.

Optionally, if N ₁ ≤ _{N 3} , and P ₄ ≤ _{P 2} , then N ₂ =N ₁ , wherein, P ₄ means that in the case that the transmission power of N ₁ PSFCHs is all P ₁ , the N ₁ PSFCH total transmit power.

Optionally, if N ₁ ≤ _{N 3} , and P ₄ >P ₂ , then the N ₂ PSFCHs are selected in descending order according to the priority of the N ₁ PSFCHs, where P ₄ means that the N In the case that the transmit power of _one PSFCH is all P ₁ , N is the total transmit power of ₁ PSFCH.

Optionally, if N ₁ >N ₃ , the N ₂ PSFCHs are selected from the N ₃ PSFCHs with the highest priority among the N ₁ PSFCHs.

Optionally, if P ₅ ≤ _{P 2} , then N ₂ =N ₃ , where P ₅ represents the total transmission power of the N ₃ PSFCHs when the transmission powers of the N ₃ PSFCHs are all P ₁ .

Optionally, if P ₅ >P ₂ , then the N ₂ PSFCHs are selected in descending order of the priorities of the N ₁ PSFCHs, where P ₅ indicates that the transmit powers of the N ₃ PSFCHs are all In the case of P ₁ , N is the total transmission power of ₃ PSFCHs.

Optionally, the value of N ₂ satisfies

Among them, M _i represents the number of PSFCHs corresponding to priority i among N ₁ PSFCHs, and the value of i is from 1 to K, if K exists such that

Satisfied at least one optional value, then the value of K is the maximum value of the at least one optional value; or, the value of _N2 satisfies

Among them, M _i represents the number of PSFCHs corresponding to priority i among N ₁ PSFCHs, and the value of i is from 0 to K-1, if K exists such that

satisfies at least one optional value, then the value of K is the maximum value of the at least one optional value.

Alternatively, if K does not exist such that

Satisfied optional value, then N ₂ PSFCHs are selected from the A PSFCHs corresponding to the first priority among the N ₁ PSFCHs, wherein the first priority is the highest among the priorities of the N ₁ PSFCHs Priority, A indicates the number of PSFCHs corresponding to the first priority.

Optionally, the transmit powers of the N ₂ PSFCHs are all equal to P ₁ .

Optionally, the transmit power of the N ₂ PSFCHs is the smaller value of P ₁ and P ₃ , where P ₃ represents the average value obtained after P ₂ is evenly allocated to the N ₂ PSFCHs.

Optionally, the terminal 1600 is configured to perform power control on the transmit power of the PSFCH.

Optionally, performing power control on the transmit power of the PSFCH includes performing power control on the transmit power of the PSFCH according to a downlink path loss, and/or performing power control on the transmit power of the PSFCH according to a sidelink path loss.

Optionally, in the case that the terminal 1600 is configured to perform power control on the transmit power of the PSFCH, the maximum transmit power _P1 of each PSFCH transmitted by the terminal 1600 is based on the downlink path loss and/or the side link path loss Sure.

Optionally, the multiple carriers are C ₂ carriers determined by the terminal 1600 from the C ₁ carriers, the sidelink data of the C ₁ carriers corresponds to multiple PSFCHs, and the multiple PSFCHs overlap in the time domain, where , C ₂ ≤ C ₃ < C ₁ , C ₃ represents the number of carriers that the terminal 1600 can transmit sidelink data at the same time.

Optionally, the C ₂ carriers are selected according to priorities of at least some of the PSFCHs among the multiple PSFCHs.

Optionally, the C ₂ carriers are selected according to the priorities of target PSFCHs among the multiple PSFCHs, and the target PSFCH includes the PSFCH with the highest priority corresponding to each carrier in the C ₁ carriers.

Optionally, N ₁ PSFCHs are located in the same time slot or the same symbol.

Fig. 17 is a structural block diagram of a terminal provided by another embodiment of the present application. The terminal 1700 in FIG. 17 may be the aforementioned second terminal, and the second terminal is the sending end of the PSSCH. The terminal 1700 may include a sending module 1710 and a determining module 1720 .

The sending module 1710 may be configured to send sidelink data to the first terminal through multiple carriers. The sidelink data on the multiple carriers correspond to N ₁ PSFCHs, and the time domain positions of the N ₁ PSFCHs overlap.

The determining module 1720 may be configured to determine N ₂ PSFCHs to be received from N ₁ PSFCHs according to the first information. N ₁ and N ₂ are positive integers, and N ₂ ≤ _{N 1} .

The first information includes at least one of the following information: the priority of N ₁ PSFCHs; the number N ₃ of PSFCHs that can be sent simultaneously by the first terminal; the maximum transmission power P ₁ of each PSFCH sent by the first terminal; or , the maximum transmit power P ₂ of the first terminal.

Optionally, the N ₂ PSFCHs are selected according to the priority order of the N ₁ PSFCHs from high to low.

Optionally, the first terminal is not configured to perform power control on the transmit power of the PSFCH.

Optionally, if N ₁ ≤ _{N 3} , and P ₄ >P ₂ , then the N ₂ PSFCHs are selected in descending order according to the priority of the N ₁ PSFCHs, where P ₄ means that the N In the case that the transmit power of ₁ PSFCH is all P ₁ , N is the total transmit power of ₁ PSFCH.

Optionally, if P ₅ >P ₂ , the N ₂ PSFCHs are selected in descending order of the priorities of the N ₁ PSFCHs, where P ₅ indicates that the transmit powers of the N ₃ PSFCHs are equal to In the case of P ₁ , N is the total transmission power of ₃ PSFCHs.

Optionally, the value of N ₂ satisfies

Alternatively, if K does not exist such that

Optionally, the transmit powers of the N ₂ PSFCHs are all equal to P ₁ .

Optionally, the first terminal is configured to perform power control on the transmit power of the PSFCH.

Optionally, in the case where the first terminal is configured to perform power control on the PSFCH transmit power, the maximum transmit power _P1 of each PSFCH transmitted by the first terminal is based on the downlink path loss and/or sidelink Road damage is determined.

Optionally, the multiple carriers are C ₂ carriers determined by the first terminal from the C ₁ carriers, the sidelink data of the C ₁ carriers corresponds to multiple PSFCHs, and the multiple PSFCHs overlap in the time domain, Wherein, C ₂ ≤ C ₃ <C ₁ , and C ₃ represents the number of carriers that the first terminal can simultaneously transmit sidelink data.

Optionally, N ₁ PSFCHs are located in the same time slot or the same symbol.

Fig. 18 is a structural block diagram of a terminal provided by another embodiment of the present application. The terminal 1800 in FIG. 18 may be the aforementioned first terminal, and the first terminal is the receiving end of the PSSCH. The terminal 1800 may include a receiving module 1810 and a determining module 1820 .

The receiving module 1810 may be configured to receive sidelink data through C ₁ carriers. The sidelink data on _C1 carrier corresponds to multiple PSFCHs, and the time domain positions of the multiple PSFCHs overlap.

The determining module 1820 may be configured to determine C ₂ carriers from the C ₁ carriers according to the priorities of at least some of the PSFCHs in the plurality of PSFCHs. C ₂ ≤ C ₃ < C ₁ , C ₃ represents the number of carriers that the terminal 1800 can simultaneously transmit sidelink data.

Optionally, multiple PSFCHs are located in the same time slot or the same symbol.

Fig. 19 is a structural block diagram of a terminal provided by another embodiment of the present application. The terminal 1900 in FIG. 19 may be the aforementioned second terminal, and the second terminal is the sending end of the PSSCH. The terminal 1900 may include a sending module 1910 and a determining module 1920 .

The sending module 1910 is configured to send sidelink data to the first terminal through C ₁ carriers. The sidelink data on _C1 carrier corresponds to multiple PSFCHs, and the time domain positions of the multiple PSFCHs overlap.

The determining module 1920 is configured to determine C ₂ carriers from the C ₁ carriers according to the priorities of at least some of the PSFCHs in the plurality of PSFCHs. C ₂ ≤ _{C 3} < C ₁ , where C ₃ represents the number of carriers that the first terminal can simultaneously transmit sidelink data.

Fig. 20 is a schematic structural diagram of a device according to an embodiment of the present application. The dashed line in Figure 20 indicates that the unit or module is optional. The apparatus 2000 may be used to implement the methods described in the foregoing method embodiments. The device 2000 may be a chip or a terminal.

Apparatus 2000 may include one or more processors 2010 . The processor 2010 can support the device 2000 to implement the methods described in the foregoing method embodiments. The processor 2010 may be a general purpose processor or a special purpose processor. For example, the processor may be a central processing unit (central processing unit, CPU). Alternatively, the processor can also be other general-purpose processors, digital signal processors (digital signal processors, DSPs), application specific integrated circuits (application specific integrated circuits, ASICs), off-the-shelf programmable gate arrays (field programmable gate arrays, FPGAs) Or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

Apparatus 2000 may also include one or more memories 2020 . A program is stored in the memory 2020, and the program can be executed by the processor 2010, so that the processor 2010 executes the methods described in the foregoing method embodiments. The memory 2020 may be independent from the processor 2010 or may be integrated in the processor 2010 .

The apparatus 2000 may also include a transceiver 2030 . The processor 2010 can communicate with other devices or chips through the transceiver 2030 . For example, the processor 2010 may send and receive data with other devices or chips through the transceiver 2030 .

The embodiment of the present application also provides a computer-readable storage medium for storing programs. The computer-readable storage medium can be applied to the terminal provided in the embodiments of the present application, and the program causes the computer to execute the methods performed by the terminal in the various embodiments of the present application.

The embodiment of the present application also provides a computer program product. The computer program product includes programs. The computer program product can be applied to the terminal provided in the embodiments of the present application, and the program causes the computer to execute the methods performed by the terminal in the various embodiments of the present application.

The embodiment of the present application also provides a computer program. The computer program can be applied to the terminal provided in the embodiments of the present application, and the computer program enables the computer to execute the methods performed by the terminal in the various embodiments of the present application.

It should be understood that in this embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B may also be determined according to A and/or other information.

In this embodiment of the application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is instructed, configures and is configured, etc. relation.

In this embodiment of the application, "predefined" or "preconfigured" can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). The application does not limit its specific implementation. For example, pre-defined may refer to defined in the protocol.

In the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, which is not limited in the present application.

It should be understood that the term "and/or" in this article is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B may mean: A exists alone, and A and B exist at the same time , there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

It should be understood that, in various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be read by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium, (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital versatile disc (digital video disc, DVD)) or a semiconductor medium (for example, a solid state disk (solid state disk, SSD) )wait.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims

A method for wireless communication, comprising:

The first terminal receives sidelink data through multiple carriers, where the sidelink data on the multiple carriers corresponds to N 1 physical sidelink feedback channels PSFCH, and the time domain positions of the N 1 PSFCHs overlap;

The first terminal determines N 2 PSFCHs to be sent from the N 1 PSFCHs according to the first information, where N 1 and N 2 are positive integers, and N 2 ≤ N 1 ;

Wherein, the first information includes at least one of the following information:

The priorities of the N 1 PSFCHs;

The number N 3 of PSFCHs that the first terminal can send simultaneously;

The maximum transmit power P 1 of each PSFCH sent by the first terminal; or,

The maximum transmit power P 2 of the first terminal.
The method according to claim 1, characterized in that, the N 2 PSFCHs are selected according to the order of priority of the N 1 PSFCHs from high to low.
The method according to claim 2, characterized in that, 1≤N 2 ≤N 3 ; or, N 2 is equal to the smaller value of N 1 and N 3 .
The method according to claim 2 or 3, wherein the transmit powers of the N 2 PSFCHs are equal to P 3 , wherein P 3 represents the average value obtained after P 2 is evenly distributed to the N 2 PSFCHs value.
The method according to any one of claims 2-4, characterized in that the total transmission power of the N 2 PSFCHs is less than or equal to the maximum transmission power P 2 of the first terminal.
The method according to any one of claims 2-5, wherein the first terminal is not configured to perform power control on PSFCH transmission power.
The method according to claim 1, wherein if N 1 ≤ N 3 , and P 4 ≤ P 2 , then N 2 =N 1 , where P 4 means that the transmission power of the N 1 PSFCHs is equal to In the case of P 1 , the total transmission power of the N 1 PSFCHs.
The method according to claim 1, wherein, if N 1 ≤ N 3 , and P 4 >P 2 , the N 2 PSFCHs are prioritized from high to low according to the priorities of the N 1 PSFCHs selected sequentially, where P 4 represents the total transmission power of the N 1 PSFCHs under the condition that the transmission powers of the N 1 PSFCHs are all P 1 .
The method according to claim 1, wherein if N 1 >N 3 , the N 2 PSFCHs are selected from the N 3 PSFCHs with the highest priority among the N 1 PSFCHs.
The method according to claim 9, characterized in that, if P 5 ≤ P 2 , then N 2 =N 3 , where P 5 means that when the transmission powers of the N 3 PSFCHs are all P 1 , Total transmit power of the N 3 PSFCHs.
The method according to claim 9, wherein, if P 5 >P 2 , the N 2 PSFCHs are selected in descending order according to the priorities of the N 1 PSFCHs, wherein, P 5 represents the total transmission power of the N 3 PSFCHs when the transmission powers of the N 3 PSFCHs are all P 1 .
The method according to claim 8 or 11, wherein the value of N2 satisfies
Wherein, M i represents the number of PSFCHs corresponding to priority i among the N 1 PSFCHs, and the value of i is from 1 to K, if K exists such that
Satisfied at least one optional value, then the value of K is the maximum value of the at least one optional value; or,

The value of N 2 satisfies
Among them, M i represents the number of PSFCHs corresponding to priority i among the N 1 PSFCHs, and the value of i is from 0 to K-1, if K exists such that
satisfies at least one optional value, then the value of K is the maximum value of the at least one optional value.
The method of claim 12, wherein if K does not exist such that

satisfies the optional value, then the N 2 PSFCHs are selected from the A PSFCHs corresponding to the first priority among the N 1 PSFCHs, wherein the first priority is the N 1 PSFCHs The highest priority among the priorities, A indicates the number of PSFCHs corresponding to the first priority.
The method according to claim 7 or 10, characterized in that the transmission powers of the N 2 PSFCHs are all equal to P 1 .
The method according to any one of claims 8 and 11-13, wherein the transmit powers of the N 2 PSFCHs are the smaller value of P 1 and P 3 , wherein P 3 means that P 2 is an average value obtained after being evenly distributed to the N 2 PSFCHs.
The method according to any one of claims 7-15, wherein the first terminal is configured to perform power control on PSFCH transmission power.
The method according to claim 16, wherein the performing power control on the transmit power of the PSFCH includes performing power control on the transmit power of the PSFCH according to the downlink path loss, and/or performing power control on the transmit power of the PSFCH according to the sidelink The path loss performs power control on the transmit power of the PSFCH.
The method according to claim 17, wherein when the first terminal is configured to perform power control on the PSFCH transmission power, the maximum transmission power P of each PSFCH transmitted by the first terminal is 1 Determine according to the downlink path loss and/or the side link path loss.
The method according to any one of claims 1-18, wherein the multiple carriers are C 2 carriers determined by the first terminal from the C 1 carriers, and the C 1 carriers The sidelink data corresponds to multiple PSFCHs, and the multiple PSFCHs overlap in the time domain, where C 2 ≤ C 3 <C 1 , and C 3 represents the number of carriers that the first terminal can simultaneously transmit sidelink data .
The method according to claim 19, wherein the C 2 carriers are selected according to priorities of at least some PSFCHs in the plurality of PSFCHs.
The method according to claim 20, wherein the C 2 carriers are selected according to the priorities of target PSFCHs in the plurality of PSFCHs, and the target PSFCH includes each of the C 1 carriers The PSFCH with the highest priority corresponding to the carriers.
The method according to any one of claims 1-21, wherein the N 1 PSFCHs are located in the same time slot or the same symbol.
A method for wireless communication, comprising:

The second terminal sends sidelink data to the first terminal through multiple carriers, where the sidelink data on the multiple carriers corresponds to N 1 physical sidelink feedback channels PSFCH, and the time domain positions of the N 1 PSFCH overlapping;

The second terminal determines N 2 PSFCHs to be received from the N 1 PSFCHs according to the first information, the N 1 and the N 2 are positive integers, and N 2 ≤ N 1 ;

Wherein, the first information includes at least one of the following information:

The priorities of the N 1 PSFCHs;

The number N 3 of PSFCHs that the first terminal can send simultaneously;

The maximum transmit power P 1 of each PSFCH sent by the first terminal; or,

The maximum transmit power P 2 of the first terminal.
The method according to claim 23, wherein the N 2 PSFCHs are selected in descending order of the priorities of the N 1 PSFCHs.
The method according to claim 24, characterized in that, 1≤N2≤N3 ; or , N2 is equal to the smaller value of N1 and N3 .
The method according to claim 24 or 25, wherein the transmit power of the N 2 PSFCHs is equal to P 3 , wherein P 3 represents the average value obtained after P 2 is evenly distributed to the N 2 PSFCHs value.
The method according to any one of claims 24-26, characterized in that the total transmission power of the N 2 PSFCHs is less than or equal to the maximum transmission power P 2 of the first terminal.
The method according to any one of claims 24-27, wherein the first terminal is not configured to perform power control on PSFCH transmission power.
The method according to claim 23, wherein if N 1 ≤ N 3 , and P 4 ≤ P 2 , then N 2 =N 1 , where P 4 represents that the transmission power of the N 1 PSFCHs is equal to In the case of P 1 , the total transmission power of the N 1 PSFCHs.
The method according to claim 23, wherein, if N 1 ≤ N 3 , and P 4 >P 2 , the N 2 PSFCHs are ranked from high to low according to the priorities of the N 1 PSFCHs selected sequentially, where P 4 represents the total transmission power of the N 1 PSFCHs under the condition that the transmission powers of the N 1 PSFCHs are all P 1 .
The method according to claim 23, wherein if N 1 >N 3 , the N 2 PSFCHs are selected from the N 3 PSFCHs with the highest priority among the N 1 PSFCHs.
The method according to claim 31, wherein, if P 5 ≤ P 2 , then N 2 =N 3 , where P 5 means that when the transmission powers of the N 3 PSFCHs are all P 1 , Total transmit power of the N 3 PSFCHs.
The method according to claim 31, wherein, if P 5 >P 2 , the N 2 PSFCHs are selected according to the order of priority of the N 1 PSFCHs from high to low, wherein, P 5 represents the total transmission power of the N 3 PSFCHs when the transmission powers of the N 3 PSFCHs are all P 1 .
The method according to claim 30 or 33, wherein the value of N2 satisfies
Wherein, M i represents the number of PSFCHs corresponding to priority i among the N 1 PSFCHs, and the value of i is from 1 to K, if K exists such that
Satisfied at least one optional value, then the value of K is the maximum value of the at least one optional value; or,

The value of N 2 satisfies
Among them, M i represents the number of PSFCHs corresponding to priority i among the N 1 PSFCHs, and the value of i is from 0 to K-1, if K exists such that
satisfies at least one optional value, then the value of K is the maximum value of the at least one optional value.
The method of claim 34, wherein if K does not exist such that

satisfies the optional value, then the N 2 PSFCHs are selected from the A PSFCHs corresponding to the first priority among the N 1 PSFCHs, wherein the first priority is the N 1 PSFCHs The highest priority in A indicates the number of PSFCHs corresponding to the first priority.
The method according to claim 29 or 32, wherein the transmission powers of the N 2 PSFCHs are all equal to P 1 .
The method according to any one of claims 30 and 33-35, wherein the transmission powers of the N 2 PSFCHs are the smaller value of P 1 and P 3 , wherein P 3 means that P 2 is an average value obtained after being evenly distributed to the N 2 PSFCHs.
The method according to any one of claims 29-37, wherein the first terminal is configured to perform power control on PSFCH transmission power.
The method according to claim 38, wherein the performing power control on the transmit power of the PSFCH includes performing power control on the transmit power of the PSFCH according to the downlink path loss, and/or performing power control on the transmit power of the PSFCH according to the sidelink The path loss performs power control on the transmit power of the PSFCH.
The method according to claim 39, wherein when the first terminal is configured to perform power control on the PSFCH transmission power, the maximum transmission power P of each PSFCH transmitted by the first terminal is 1 Determine according to the downlink path loss and/or the side link path loss.
The method according to any one of claims 23-40, wherein the multiple carriers are C 2 carriers determined by the first terminal from the C 1 carriers, and the C 2 carriers The sidelink data corresponds to multiple PSFCHs, and the multiple PSFCHs overlap in the time domain, where C 2 ≤ C 3 <C 1 , and C 3 represents the number of carriers on which the first terminal can simultaneously transmit sidelink data quantity.
The method according to claim 41, wherein the C 2 carriers are selected according to the priorities of at least some PSFCHs in the plurality of PSFCHs.
The method according to claim 42, wherein the C 2 carriers are selected according to the priorities of target PSFCHs in the plurality of PSFCHs, and the target PSFCH includes each of the C 1 carriers The PSFCH with the highest priority corresponding to the carriers.
The method according to any one of claims 23-43, wherein the N 1 PSFCHs are located in the same time slot or the same symbol.
A method for wireless communication, comprising:

The first terminal receives sidelink data through C 1 carriers, wherein the sidelink data on the C 1 carriers corresponds to multiple physical sidelink feedback channels PSFCH, and the time domain positions of the multiple PSFCHs overlap;

The first terminal determines C 2 carriers from the C 1 carriers according to the priorities of at least some of the PSFCHs in the multiple PSFCHs, where C 2 ≤ C 3 < C 1 , C 3 means that the first The number of carriers that a terminal can transmit sidelink data at the same time.
The method according to claim 45, wherein the C 2 carriers are selected according to the priorities of target PSFCHs in the plurality of PSFCHs, and the target PSFCH includes each of the C 1 carriers The PSFCH with the highest priority corresponding to the carriers.
The method according to claim 45 or 46, wherein the multiple PSFCHs are located in the same time slot or the same symbol.
A method for wireless communication, comprising:

The second terminal sends sidelink data to the first terminal through C 1 carriers, wherein the sidelink data on the C 1 carriers corresponds to multiple physical sidelink feedback channels PSFCH, and the time domain positions of the multiple PSFCHs overlapping;

The second terminal determines C 2 carriers from the C 1 carriers according to the priorities of at least some of the PSFCHs in the plurality of PSFCHs, where C 2 ≤ C 3 < C 1 , and C 3 indicates that the first The number of carriers that the terminal can transmit sidelink data at the same time.
The method according to claim 48, wherein the C 2 carriers are selected according to the priorities of target PSFCHs in the plurality of PSFCHs, and the target PSFCH includes each of the C 1 carriers The PSFCH with the highest priority corresponding to the carriers.
The method according to claim 48 or 49, wherein the multiple PSFCHs are located in the same time slot or the same symbol.
A terminal, characterized in that the terminal is a first terminal, and the first terminal includes:

A receiving module, configured to receive sidelink data through multiple carriers, wherein the sidelink data on the multiple carriers corresponds to N 1 physical sidelink feedback channels PSFCH, and the time domain positions of the N 1 PSFCHs overlap;

A determining module, configured to determine N 2 PSFCHs to be sent from the N 1 PSFCHs according to the first information, the N 1 and the N 2 are positive integers, and N 2 ≤ N 1 ;

Wherein, the first information includes at least one of the following information:

The priorities of the N 1 PSFCHs;

The number N 3 of PSFCHs that the first terminal can send simultaneously;

The maximum transmit power P 1 of each PSFCH sent by the first terminal; or,

The maximum transmit power P 2 of the first terminal.
The terminal according to claim 51, wherein the N 2 PSFCHs are selected in descending order of the priorities of the N 1 PSFCHs.
The terminal according to claim 52, wherein 1≤N 2 ≤N 3 ; or, N 2 is equal to the smaller value of N 1 and N 3 .
The terminal according to claim 52 or 53, wherein the transmit powers of the N 2 PSFCHs are all equal to P 3 , where P 3 represents the average value obtained after P 2 is evenly distributed to the N 2 PSFCHs value.
The terminal according to any one of claims 52-54, wherein the total transmission power of the N 2 PSFCHs is less than or equal to the maximum transmission power P 2 of the first terminal.
The terminal according to any one of claims 52-55, wherein the first terminal is not configured to perform power control on PSFCH transmission power.
The terminal according to claim 51, wherein, if N 1 ≤ N 3 , and P 4 ≤ P 2 , then N 2 =N 1 , where P 4 means that the transmit power of the N 1 PSFCHs is equal to In the case of P 1 , the total transmission power of the N 1 PSFCHs.
The terminal according to claim 51, wherein if N 1 ≤ N 3 , and P 4 >P 2 , the N 2 PSFCHs are prioritized from high to low according to the priorities of the N 1 PSFCHs selected sequentially, where P 4 represents the total transmission power of the N 1 PSFCHs under the condition that the transmission powers of the N 1 PSFCHs are all P 1 .
The terminal according to claim 51, wherein if N 1 >N 3 , the N 2 PSFCHs are selected from the N 3 PSFCHs with the highest priority among the N 1 PSFCHs.
The terminal according to claim 59, wherein if P 5 ≤ P 2 , then N 2 =N 3 , where P 5 means that when the transmission powers of the N 3 PSFCHs are all P 1 , Total transmit power of the N 3 PSFCHs.
The terminal according to claim 59, wherein if P 5 >P 2 , the N 2 PSFCHs are selected according to the order of priority of the N 1 PSFCHs from high to low, where P 5 represents the total transmission power of the N 3 PSFCHs when the transmission powers of the N 3 PSFCHs are all P 1 .
The terminal according to claim 58 or 61, wherein the value of N2 satisfies
Wherein, M i represents the number of PSFCHs corresponding to priority i among the N 1 PSFCHs, and the value of i is from 1 to K, if K exists such that
Satisfied at least one optional value, then the value of K is the maximum value of the at least one optional value; or,

The value of N 2 satisfies
Among them, M i represents the number of PSFCHs corresponding to priority i among the N 1 PSFCHs, and the value of i is from 0 to K-1, if K exists such that
satisfies at least one optional value, then the value of K is the maximum value of the at least one optional value.
The terminal according to claim 62, wherein if K does not exist such that

satisfies the optional value, then the N 2 PSFCHs are selected from the A PSFCHs corresponding to the first priority among the N 1 PSFCHs, wherein the first priority is the N 1 PSFCHs The highest priority among the priorities, A indicates the number of PSFCHs corresponding to the first priority.
The terminal according to claim 57 or 60, wherein the transmit powers of the N 2 PSFCHs are all equal to P 1 .
The terminal according to any one of claims 58 and 61-63, wherein the transmission powers of the N 2 PSFCHs are the smaller value of P 1 and P 3 , wherein P 3 means that P 2 is an average value obtained after being evenly distributed to the N 2 PSFCHs.
The terminal according to any one of claims 57-65, wherein the first terminal is configured to perform power control on PSFCH transmission power.
The terminal according to claim 66, wherein the performing power control on the PSFCH transmission power includes performing power control on the PSFCH transmission power according to the downlink path loss, and/or performing power control on the PSFCH transmission power according to the sidelink The path loss performs power control on the transmit power of the PSFCH.
The terminal according to claim 67, wherein when the first terminal is configured to perform power control on the PSFCH transmission power, the maximum transmission power P of each PSFCH transmitted by the first terminal is 1 Determine according to the downlink path loss and/or the side link path loss.
The terminal according to any one of claims 51-68, wherein the multiple carriers are C 2 carriers determined by the first terminal from the C 1 carriers, and the C 1 carriers The sidelink data corresponds to multiple PSFCHs, and the multiple PSFCHs overlap in the time domain, where C 2 ≤ C 3 <C 1 , and C 3 represents the number of carriers that the first terminal can simultaneously transmit sidelink data .
The terminal according to claim 69, wherein the C 2 carriers are selected according to the priorities of at least some PSFCHs in the multiple PSFCHs.
The terminal according to claim 70, wherein the C 2 carriers are selected according to the priorities of target PSFCHs in the multiple PSFCHs, and the target PSFCH includes each of the C 1 carriers The PSFCH with the highest priority corresponding to the carriers.
The terminal according to any one of claims 51-71, wherein the N 1 PSFCHs are located in the same time slot or the same symbol.
A terminal, characterized in that the terminal is a second terminal, and the second terminal includes:

A sending module, configured to send sidelink data to the first terminal through multiple carriers, wherein the sidelink data on the multiple carriers correspond to N 1 physical sidelink feedback channels PSFCH, and the time of the N 1 PSFCH domain location overlap;

A determination module, configured to determine N 2 PSFCHs to be received from the N 1 PSFCHs according to the first information, the N 1 and the N 2 are positive integers, and N 2 ≤ N 1 ;

Wherein, the first information includes at least one of the following information:

The priorities of the N 1 PSFCHs;

The number N 3 of PSFCHs that the first terminal can send simultaneously;

The maximum transmit power P 1 of each PSFCH sent by the first terminal; or,

The maximum transmit power P 2 of the first terminal.
The terminal according to claim 73, wherein the N 2 PSFCHs are selected in descending order of the priorities of the N 1 PSFCHs.
The terminal according to claim 74, wherein 1≤N 2 ≤N 3 ; or, N 2 is equal to the smaller value of N 1 and N 3 .
The terminal according to claim 74 or 75, wherein the transmit power of the N 2 PSFCHs is equal to P 3 , where P 3 represents the average value obtained after P 2 is evenly distributed to the N 2 PSFCHs value.
The terminal according to any one of claims 74-76, wherein the total transmission power of the N 2 PSFCHs is less than or equal to the maximum transmission power P 2 of the first terminal.
The terminal according to any one of claims 74-77, wherein the first terminal is not configured to perform power control on PSFCH transmission power.
The terminal according to claim 73, wherein if N 1 ≤ N 3 , and P 4 ≤ P 2 , then N 2 =N 1 , where P 4 means that the transmission power of the N 1 PSFCHs is equal to In the case of P 1 , the total transmission power of the N 1 PSFCHs.
The terminal according to claim 73, wherein if N 1 ≤ N 3 , and P 4 >P 2 , the N 2 PSFCHs are prioritized from high to low according to the priorities of the N 1 PSFCHs selected sequentially, where P 4 represents the total transmission power of the N 1 PSFCHs under the condition that the transmission powers of the N 1 PSFCHs are all P 1 .
The terminal according to claim 73, wherein if N 1 >N 3 , the N 2 PSFCHs are selected from the N 3 PSFCHs with the highest priority among the N 1 PSFCHs.
The terminal according to claim 81, characterized in that, if P 5 ≤ P 2 , then N 2 =N 3 , where P 5 means that when the transmission powers of the N 3 PSFCHs are all P 1 , Total transmit power of the N 3 PSFCHs.
The terminal according to claim 81, wherein if P 5 >P 2 , the N 2 PSFCHs are selected in descending order of the priority of the N 1 PSFCHs, wherein, P 5 represents the total transmission power of the N 3 PSFCHs when the transmission powers of the N 3 PSFCHs are all P 1 .
The terminal according to claim 80 or 83, wherein the value of N2 satisfies
Wherein, M i represents the number of PSFCHs corresponding to priority i among the N 1 PSFCHs, and the value of i is from 1 to K, if K exists such that
Satisfied at least one optional value, then the value of K is the maximum value of the at least one optional value; or,

The value of N 2 satisfies
Among them, M i represents the number of PSFCHs corresponding to priority i among the N 1 PSFCHs, and the value of i is from 0 to K-1, if K exists such that
satisfies at least one optional value, then the value of K is the maximum value of the at least one optional value.
The terminal according to claim 84, wherein if K does not exist such that

satisfies the optional value, then the N 2 PSFCHs are selected from the A PSFCHs corresponding to the first priority among the N 1 PSFCHs, wherein the first priority is the N 1 PSFCHs The highest priority in A indicates the number of PSFCHs corresponding to the first priority.
The terminal according to claim 79 or 82, wherein the transmit powers of the N 2 PSFCHs are all equal to P 1 .
The terminal according to any one of claims 80 and 83-85, wherein the transmission powers of the N 2 PSFCHs are the smaller value of P 1 and P 3 , wherein P 3 means that P 2 is an average value obtained after being evenly distributed to the N 2 PSFCHs.
The terminal according to any one of claims 79-87, wherein the first terminal is configured to perform power control on PSFCH transmission power.
The terminal according to claim 88, wherein the performing power control on the transmit power of the PSFCH includes performing power control on the transmit power of the PSFCH according to the downlink path loss, and/or performing power control on the transmit power of the PSFCH according to the sidelink The path loss performs power control on the transmit power of the PSFCH.
The terminal according to claim 89, wherein when the first terminal is configured to perform power control on PSFCH transmission power, the maximum transmission power P of each PSFCH transmitted by the first terminal is 1 Determine according to the downlink path loss and/or the side link path loss.
The terminal according to any one of claims 73-90, wherein the multiple carriers are C 2 carriers determined by the first terminal from the C 1 carriers, and the C 2 carriers The sidelink data corresponds to multiple PSFCHs, and the multiple PSFCHs overlap in the time domain, where C 2 ≤ C 3 <C 1 , and C 3 represents the number of carriers on which the first terminal can simultaneously transmit sidelink data quantity.
The terminal according to claim 91, wherein the C 2 carriers are selected according to priorities of at least some PSFCHs in the plurality of PSFCHs.
The terminal according to claim 92, wherein the C 2 carriers are selected according to the priorities of target PSFCHs in the plurality of PSFCHs, and the target PSFCH includes each of the C 1 carriers The PSFCH with the highest priority corresponding to the carriers.
The terminal according to any one of claims 73-93, wherein the N 1 PSFCHs are located in the same time slot or the same symbol.
A terminal, characterized in that the terminal is a first terminal, and the first terminal includes:

A receiving module, configured to receive sidelink data through C 1 carriers, wherein the sidelink data on the C 1 carriers corresponds to multiple physical sidelink feedback channels PSFCH, and the time domain positions of the multiple PSFCHs overlap;

A determining module, configured to determine C 2 carriers from the C 1 carriers according to the priorities of at least some of the PSFCHs in the plurality of PSFCHs, where C 2 ≤ C 3 < C 1 , and C 3 represents the first The number of carriers that a terminal can transmit sidelink data at the same time.
The terminal according to claim 95, wherein the C 2 carriers are selected according to the priorities of target PSFCHs in the multiple PSFCHs, and the target PSFCH includes each of the C 1 carriers The PSFCH with the highest priority corresponding to the carriers.
The terminal according to claim 95 or 96, wherein the multiple PSFCHs are located in the same time slot or the same symbol.
A terminal, characterized in that the terminal is a second terminal, and the second terminal includes:

A sending module, configured to send sidelink data to the first terminal through C 1 carriers, wherein the sidelink data on the C 1 carriers correspond to multiple physical sidelink feedback channels PSFCH, and the timing of the multiple PSFCHs domain location overlap;

A determining module, configured to determine C 2 carriers from the C 1 carriers according to the priorities of at least some of the PSFCHs in the plurality of PSFCHs, where C 2 ≤ C 3 < C 1 , and C 3 represents the first The number of carriers that the terminal can transmit sidelink data at the same time.
The terminal according to claim 98, wherein the C 2 carriers are selected according to the priorities of target PSFCHs in the plurality of PSFCHs, and the target PSFCH includes each of the C 1 carriers The PSFCH with the highest priority corresponding to the carriers.
The terminal according to claim 98 or 99, wherein the multiple PSFCHs are located in the same time slot or the same symbol.
A terminal, characterized by comprising a memory and a processor, the memory is used to store a program, and the processor is used to call the program in the memory to execute the method described in any one of claims 1-50 method.
An apparatus, characterized by comprising a processor, configured to call a program from a memory to execute the method according to any one of claims 1-50.
A chip, characterized by comprising a processor, configured to call a program from a memory, so that a device installed with the chip executes the method according to any one of claims 1-50.
A computer-readable storage medium, characterized in that a program is stored thereon, and the program causes a computer to execute the method according to any one of claims 1-50.
A computer program product, characterized by comprising a program, the program causes a computer to execute the method according to any one of claims 1-50.
A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 1-50.