WO2024093649A1 - 一种侧行通信方法及装置 - Google Patents

一种侧行通信方法及装置 Download PDF

Info

Publication number
WO2024093649A1
WO2024093649A1 PCT/CN2023/124547 CN2023124547W WO2024093649A1 WO 2024093649 A1 WO2024093649 A1 WO 2024093649A1 CN 2023124547 W CN2023124547 W CN 2023124547W WO 2024093649 A1 WO2024093649 A1 WO 2024093649A1
Authority
WO
WIPO (PCT)
Prior art keywords
psfch
prb
prbs
prb set
psfchs
Prior art date
Application number
PCT/CN2023/124547
Other languages
English (en)
French (fr)
Inventor
黄海宁
杨帆
李君瑶
张天虹
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2024093649A1 publication Critical patent/WO2024093649A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels

Definitions

  • the present application relates to the field of communication technology, and in particular to a sideline communication method and device.
  • the transmitting UE can transmit data through the physical sidelink shared channel (PSSCH), and the receiving UE can feedback the corresponding acknowledgement (ACK) or negative acknowledgement (NACK) of the data through the physical sidelink feedback channel (PSFCH) after receiving the data.
  • ACK or NACK usually occupies 1 bit, so one PSFCH can occupy one physical resource block (PRB) to transmit ACK or NACK.
  • PRB physical resource block
  • OCB occupied channel bandwidth
  • one PSFCH can occupy multiple PRBs.
  • PSFCH occupies multiple PRBs, there is currently no specific implementation plan for how the UE sends each PSFCH.
  • the present application provides a sideline communication method and apparatus, which are used to provide an implementation scheme for sending PSFCH through multiple PRBs.
  • a sideline communication method may be a terminal device or a chip, a chip system or a circuit located in the terminal device, and the method may be implemented by the following steps: a first terminal device receives X sideline data, and sends X PSFCHs corresponding to the X sideline data; wherein the transmission of the first PSFCH among the X PSFCHs occupies a first PRB set and a second PRB set corresponding to the first PSFCH; the first PRB set includes N PRBs, the N PRBs are common PRBs, and the second PRB set includes m PRBs, N is an integer greater than 1, and m is an integer greater than or equal to 1; the transmit power of the first PSFCH on any PRB in the first PRB set is less than or equal to the transmit power on any PRB in the second PRB set, and X is an integer greater than or equal to 1.
  • the SL communication of the first terminal device can meet the OCB requirements.
  • the transmission power of the first PSFCH on the public PRB it is beneficial to ensure the signal quality of the valid signal (that is, the first PSFCH transmitted on the dedicated PRB), thereby improving the transmission performance.
  • the probability of successful reception by the other party can be increased. Therefore, the above method can improve the performance of PSFCH transmission while meeting the OCB requirements.
  • the transmission power of the first PSFCH on any PRB in the first PRB set and the second PRB set is obtained by equally dividing the transmission power of the first PSFCH according to the total number of PRBs included in the first PRB set and the second PRB set. That is, the transmission power of each PRB in the public PRB set and the dedicated PRB set is the same. This method can reduce the implementation complexity.
  • the transmit power of the first PSFCH on any occupied PRB is
  • the total transmit power of the first PSFCH on the first PRB set and the total transmit power on the second PRB set are determined according to the transmit power of the first PSFCH and the adjustment factor. This method can improve the flexibility of transmission.
  • the total transmit power of the first PSFCH on the first PRB set is Satisfies the following formula:
  • P1 is the transmission power of the first PSFCH
  • ⁇ 1 is the adjustment factor
  • ⁇ 1 is greater than 0 and less than 1.
  • the total transmit power of the first PSFCH on the first PRB set is Satisfies the following formula:
  • P1 is the transmission power of the first PSFCH
  • ⁇ 1 is the adjustment factor
  • the total transmit power of the first PSFCH on the first PRB set is Satisfies the following formula:
  • P1 is the transmission power of the first PSFCH
  • ⁇ 2 is the adjustment factor
  • the first PRB set includes all or part of the PRBs in an interleaved resource block.
  • the second PSFCH among the X PSFCHs occupies the first PRB set and the second PRB set corresponding to the second PSFCH.
  • the X PSFCHs are sent in the same manner, that is, the transmission of each PSFCH occupies N common PRBs and one dedicated PRB, and the implementation complexity is low.
  • the transmission power of the first PSFCH is obtained by equally dividing the maximum transmission power of the first terminal device according to the value of X; or, the transmission power of the first PSFCH is determined according to at least one of the priority of at least one PSFCH to be sent, the maximum number of PSFCHs to be sent, and the maximum transmission power of the first terminal device, wherein at least one PSFCH includes X PSFCHs.
  • transmission of a second PSFCH among the X PSFCHs occupies a second PRB set corresponding to the second PSFCH.
  • the number of PSFCHs transmitted on the public PRB can be reduced, so that the transmission power of the effective signal (i.e., the PSFCH carried on the dedicated PRB) can be improved, and then the signal quality of the effective signal (i.e., the PSFCH transmitted on the dedicated PRB) can be improved, and the transmission performance can be improved. Therefore, the above method can further improve the performance of PSFCH transmission under the premise of meeting the OCB requirements.
  • the transmit power of the first PSFCH is determined based on the maximum transmit power of the first terminal device, the total number of PRBs occupied by X PSFCHs, and the number of PRBs occupied by the first PSFCH.
  • the transmit power P1 of the first PSFCH satisfies the following formula:
  • P is the maximum transmission power of the first terminal device.
  • the first PSFCH is the PSFCH with the lowest priority among the X PSFCHs.
  • a sideline communication method may be a terminal device or a chip, a chip system or a circuit located in the terminal device, and the method may be implemented by the following steps: the second terminal device determines the resources occupied by the transmission of the first PSFCH, and the resources occupied by the transmission of the first PSFCH include a first PRB set and a second PRB set corresponding to the first PSFCH. The second terminal device receives the first PSFCH on the second PRB set corresponding to the first PSFCH.
  • the first PRB set includes N PRBs, the N PRBs are common PRBs, the second PRB set includes m PRBs, N is an integer greater than 1, and m is an integer greater than or equal to 1.
  • the SL communication of the first terminal device can meet the OCB requirements.
  • the transmission power of the first PSFCH on the public PRB it is beneficial to ensure the signal quality of the valid signal (that is, the first PSFCH transmitted on the dedicated PRB), thereby improving the transmission performance.
  • the probability of successful reception by the other party can be increased. Therefore, the above method can improve the performance of PSFCH transmission while meeting the OCB requirements.
  • the second terminal device receives the first PSFCH on a second PRB set corresponding to the first PSFCH, including:
  • the second terminal device receives the first PSFCH on the second PRB set corresponding to the first PSFCH, and does not receive the first PSFCH on the first PRB set.
  • a sideline communication method is provided.
  • the execution subject of the method may be a terminal device or a chip, a chip system or a circuit located in the terminal device.
  • the method may be implemented by the following steps: the first terminal device receives X sideline data and sends Y PSFCHs. Among them, the transmission of the first PSFCH in the Y PSFCHs occupies the first PRB set, and the transmission of the second PSFCH in the Y PSFCHs occupies the second PRB set corresponding to the second PSFCH; the first PRB set includes N PRBs, and N PRBs are common PRBs; the second PRB set includes m PRBs; N is an integer greater than 1, and m is an integer greater than or equal to 1. X is an integer greater than or equal to 1. Number; Y is an integer greater than or equal to X.
  • the SL communication of the first terminal device can meet the OCB requirements.
  • the transmission of one PSFCH occupies N public PRBs, while the transmission of other PSFCHs only occupies dedicated PRBs, which can reduce the number of PSFCHs transmitted on the public PRBs, thereby improving the transmission power of the effective signal (that is, the PSFCH carried on the dedicated PRB), and then improving the signal quality of the effective signal (that is, the PSFCH transmitted on the dedicated PRB), and improving the transmission performance. Therefore, the above method can further improve the performance of PSFCH transmission while meeting the OCB requirements.
  • Y PSFCHs are X PSFCHs corresponding to X sidelink data
  • the first PSFCH is the PSFCH with the lowest priority among the X PSFCHs.
  • Y X+1
  • the Y PSFCHs include X PSFCHs corresponding to X sidelink data and one preconfigured or predefined PSFCH
  • the first PSFCH is a preconfigured or predefined PSFCH.
  • the transmission power of the first PSFCH on any PRB in the first PRB set is obtained by equally dividing the transmission power of the first PSFCH according to the total number of PRBs included in the first PRB set. This design can reduce the implementation complexity.
  • the transmission power of the second PSFCH on any PRB in the second PRB set is obtained by equally dividing the transmission power of the second PSFCH according to the total number of PRBs included in the second PRB set. This design can reduce the implementation complexity.
  • the first PRB set includes all or part of the PRBs in one or more staggered resource blocks.
  • the transmission power of the first PSFCH is obtained by equally dividing the maximum transmission power of the first terminal device according to the value of X; or, the transmission power of the first PSFCH is determined according to at least one of the priority of at least one PSFCH to be sent, the maximum number of PSFCHs to be sent, and the maximum transmission power of the first terminal device, wherein at least one PSFCH includes X PSFCHs.
  • a sideline communication method may be a terminal device or a chip, a chip system or a circuit located in the terminal device, and the method may be implemented by the following steps: a second terminal device determines the resources occupied by the transmission of a first PSFCH, and the resources occupied by the transmission of the first PSFCH are a first PRB set. The second terminal device receives the first PSFCH on the first PRB set.
  • the first PRB set includes N PRBs, and the N PRBs are common PRBs; N is an integer greater than 1.
  • the SL communication of the first terminal device can meet the OCB requirements.
  • the transmission of one PSFCH occupies N public PRBs, while the transmission of other PSFCHs only occupies dedicated PRBs, which can reduce the number of PSFCHs transmitted on the public PRBs, thereby improving the transmission power of the effective signal (that is, the PSFCH carried on the dedicated PRB), and then improving the signal quality of the effective signal (that is, the PSFCH transmitted on the dedicated PRB), and improving the transmission performance. Therefore, the above method can further improve the performance of PSFCH transmission while meeting the OCB requirements.
  • a sideline communication method may be a terminal device or a chip, a chip system or a circuit located in the terminal device, and the method may be implemented by the following steps: a first terminal device successfully accesses a channel at a first start symbol in a first time slot or before the first start symbol; the first terminal device starts transmitting sideline data at the first start symbol, and the sideline data is carried on a PSSCH; wherein the first time slot includes the first start symbol and a second start symbol, and the second start symbol is a symbol after the first start symbol; the first start symbol and the second start symbol are automatic gain control (AGC) symbols.
  • AGC automatic gain control
  • the first starting symbol is the first symbol in the first time slot.
  • the second starting symbol is the sixth symbol in the first time slot.
  • the PSSCH DMRS time domain position does not include the sixth symbol, so the use of this symbol as AGC will not affect the DMRS symbols included in the time slot, thereby ensuring the demodulation performance of the receiving terminal equipment.
  • the second starting symbol is the first symbol in the first time slot and the first symbol after the first symbol that does not include a PSSCH demodulation reference signal (DMRS).
  • the first symbol is the next symbol of the symbol occupied by the PSCCH in the first time slot or the fifth symbol.
  • the resource pool corresponding to the first terminal device includes a resource block set, and the resource pool is a resource set used for the first terminal device to perform side communication.
  • the method also includes: the first terminal device sends reference signal indication information, the reference signal indication information indicates the time domain position of the DMRS symbol of the PSSCH, and the time domain position of the DMRS symbol does not include the position of the second start symbol.
  • an embodiment of the present application provides a side communication device, which can implement the method implemented by the first terminal device in the first aspect or any possible design thereof, or the third aspect or any possible design thereof, or the fifth aspect or any possible design thereof.
  • the device includes corresponding units or components for executing the above method.
  • the units included in the device can be implemented by software and/or hardware.
  • the device can be, for example, a first terminal device, or a component or baseband chip, chip system, or processor that can support the implementation of the above method in the first terminal device.
  • the communication device includes a processor configured to support the communication device to perform the corresponding functions of the terminal device in the method shown above.
  • the communication device may also include a memory, which may be coupled to the processor and stores the necessary program instructions and data of the communication device.
  • the communication device also includes an interface circuit, which is used to support communication between the communication device and other terminal devices.
  • the communication device may include modular components such as a transceiver unit (or communication module, transceiver module) and a processing unit (or processing module), which can perform the corresponding functions of the first terminal device in the first aspect or any possible design thereof, or the third aspect or any possible design thereof, or the fifth aspect or any possible design thereof.
  • the transceiver unit may be a transmitter and a receiver, or a transceiver obtained by integrating the transmitter and the receiver.
  • the transceiver unit may include an antenna and a radio frequency circuit, etc.
  • the processing unit may be a processor, such as a baseband chip, etc.
  • the transceiver unit may be a radio frequency unit, and the processing unit may be a processor.
  • the transceiver unit may be an input and output interface of the chip system, and the processing unit may be a processor of the chip system, such as a central processing unit (CPU).
  • CPU central processing unit
  • the transceiver unit may be used to perform the receiving and/or sending actions performed by the first terminal device in the first aspect or any possible design thereof, or the third aspect or any possible design thereof, or the fifth aspect or any possible design thereof.
  • the processing unit may be used to perform actions other than receiving and sending performed by the first terminal device in the first aspect or any possible design thereof, or the third aspect or any possible design thereof, or the fifth aspect or any possible design thereof.
  • an embodiment of the present application provides a side communication device, which can implement the method implemented by the second terminal device in the second aspect or any possible design thereof, or the fourth aspect or any possible design thereof.
  • the device includes corresponding units or components for executing the above method.
  • the units included in the device can be implemented by software and/or hardware.
  • the device can be, for example, a second terminal device, or a component or baseband chip, chip system, or processor that can support the implementation of the above method in the second terminal device.
  • the communication device includes a processor configured to support the communication device to perform the corresponding functions of the terminal device in the method shown above.
  • the communication device may also include a memory, which may be coupled to the processor and stores the necessary program instructions and data of the communication device.
  • the communication device also includes an interface circuit, which is used to support communication between the communication device and other terminal devices.
  • the communication device may include modular components such as a transceiver unit (or communication module, transceiver module) and a processing unit (or processing module), which can perform the corresponding functions of the second terminal device in the above-mentioned second aspect or any possible design thereof, or the fourth aspect or any possible design thereof.
  • the transceiver unit may be a transmitter and a receiver, or a transceiver obtained by integrating the transmitter and the receiver.
  • the transceiver unit may include an antenna and a radio frequency circuit, etc.
  • the processing unit may be a processor, such as a baseband chip, etc.
  • the transceiver unit may be a radio frequency unit, and the processing unit may be a processor.
  • the transceiver unit may be an input and output interface of the chip system, and the processing unit may be a processor of the chip system, such as a central processing unit (CPU).
  • CPU central processing unit
  • the transceiver unit may be used to perform the receiving and/or sending actions performed by the second terminal device in the second aspect or any possible design thereof, or the fourth aspect or any possible design thereof.
  • the processing unit may be used to perform actions other than receiving and sending performed by the first terminal device in the second aspect or any possible design thereof, or the fourth aspect or any possible design thereof.
  • a side communication system comprising the device described in the sixth aspect and the device described in the seventh aspect.
  • a computer-readable storage medium which is used to store computer instructions.
  • the computer instructions When the computer instructions are executed on a computer, the computer executes the method shown in any one of the first to fifth aspects above or any possible implementation manner thereof.
  • a computer program product comprising instructions
  • the computer program product is used to store computer instructions, and when the computer instructions are executed on a computer, the computer is caused to execute any one of the first to fifth aspects or any one of them.
  • the method shown in the embodiment of the present invention can be implemented.
  • a circuit is provided, the circuit being coupled to a memory, and the circuit being used to execute the method shown in any one of the first to fifth aspects or any possible implementation manner thereof.
  • the circuit may include a chip circuit.
  • FIG1 is a schematic diagram of the architecture of a V2X system according to an embodiment of the present application.
  • FIG2 is a schematic diagram of a flow chart of a side communication method according to an embodiment of the present application.
  • FIG3A is a schematic diagram of a common PRB according to an embodiment of the present application.
  • FIG3B is a schematic diagram of a public resource according to an embodiment of the present application.
  • FIG3C is a schematic diagram of a public resource according to an embodiment of the present application.
  • FIG4 is a schematic diagram of a common PRB according to an embodiment of the present application.
  • FIG5 is a schematic diagram of sending X PSFCHs according to an embodiment of the present application.
  • FIG6 is a schematic diagram of sending X PSFCHs according to an embodiment of the present application.
  • FIG7 is a schematic diagram of a side communication method according to an embodiment of the present application.
  • FIG8 is a schematic diagram of sending X PSFCHs according to an embodiment of the present application.
  • FIG9 is a schematic diagram of sending X PSFCHs according to an embodiment of the present application.
  • FIG10 is a schematic diagram of the structure of a side communication device according to an embodiment of the present application.
  • FIG11 is a schematic structural diagram of a side communication device according to an embodiment of the present application.
  • Terminal equipment including equipment that provides voice and/or data connectivity to users, specifically, including equipment that provides voice to users, or including equipment that provides data connectivity to users, or including equipment that provides voice and data connectivity to users.
  • the terminal equipment can communicate with the core network via the radio access network (RAN), exchange voice or data with the RAN, or exchange voice and data with the RAN.
  • RAN radio access network
  • the terminal device may include user equipment, wireless terminal equipment, mobile terminal equipment, device-to-device (D2D) terminal equipment, vehicle to everything (V2X) terminal equipment, machine-to-machine/machine-type communications (M2M/MTC) terminal equipment, Internet of Things (IoT) terminal equipment, subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, or user equipment, etc.
  • D2D device-to-device
  • V2X vehicle to everything
  • M2M/MTC machine-to-machine/machine-type communications
  • IoT Internet of Things
  • subscriber unit subscriber station
  • mobile station mobile station
  • remote station access point
  • AP access terminal
  • access terminal user terminal, user agent, or user equipment, etc.
  • it may include a mobile phone (or "cellular" phone), a computer with a mobile terminal device, a portable, pocket-sized, handheld, or computer-built-in mobile device, etc.
  • PCS personal communication service
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • restricted devices such as devices with low power consumption, or devices with limited storage capacity, or devices with limited computing power, etc.
  • information sensing devices such as barcodes, radio frequency identification (RFID), sensors, global positioning systems (GPS), laser scanners, etc.
  • the terminal device in the V2X technology may be a road side unit (RSU).
  • the RSU may be a fixed infrastructure entity that supports V2X applications and may exchange messages with other entities that support V2X applications.
  • the road side unit may exchange messages with other entities that support V2X applications through the PC5 port.
  • the terminal equipment in V2X technology can also be a whole vehicle, a communication module in the whole vehicle (such as a communication chip, a chip system, etc.), and so on.
  • the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a smart speaker in an IoT network, a wireless terminal device in telemedicine, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc., and the embodiments of the present application are not limited to this.
  • Wearable devices can also be called wearable smart devices or smart wearable devices, etc., which are a general term for devices that are intelligently designed and developed for daily wear using wearable technology, such as Glasses, gloves, watches, clothing and shoes, etc.
  • wearable devices can be virtual reality (VR) devices and augmented reality (AR) devices.
  • Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothes or accessories.
  • Wearable devices are not only hardware devices, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets, smart helmets, and smart jewelry for vital sign monitoring.
  • the terminal device can also be a complete vehicle, a wireless communication module in the vehicle, a vehicle-mounted T-box (Telematics BOX), or a roadside unit RSU.
  • a vehicle-mounted T-box Telematics BOX
  • RSU roadside unit
  • the terminal device can also be a V2X device, such as a smart car (or intelligent car), a digital car, an unmanned car (or driverless car or pilotless car or automobile), a self-driving car (or autonomous car), a pure electric vehicle (or battery EV), a hybrid electric vehicle (HEV), a range extended EV (REEV), a plug-in hybrid electric vehicle (PHEV), a new energy vehicle (new energy vehicle), or a roadside unit (RSU).
  • the terminal device can also be a device in device to device (D2D) communication, such as an electric meter or a water meter.
  • the terminal device can also be a terminal device in an IoT system.
  • IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network that interconnects people and machines and things.
  • the various terminal devices introduced above if located on a vehicle (for example, placed in a vehicle or installed in a vehicle), can be considered as vehicle-mounted terminal devices, which are also called on-board units (OBU).
  • the terminal device of the present application can also be an on-board module, on-board module, on-board component, on-board chip or on-board unit built into a vehicle as one or more components or units.
  • the vehicle can implement the method of the present application through the built-in on-board module, on-board module, on-board component, on-board chip or on-board unit.
  • the terminal device may also include a relay.
  • a relay any device that can communicate data with the base station.
  • the device for realizing the function of the terminal device can be a terminal device, or it can be a device applied to the terminal device that can support the terminal device to realize the function, such as a component or assembly with a communication function, or a chip system, which can be installed in the terminal device.
  • the chip system can be composed of chips, or it can include chips and other discrete devices.
  • Network equipment for example, including access network (AN) equipment, such as a base station (e.g., access point), which may refer to equipment in the access network that communicates with a wireless terminal device through one or more cells over the air interface, or, for example, a network device in a V2X technology is a base station type RSU.
  • the base station can be used to convert received air frames to and from Internet protocol (IP) packets, acting as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network.
  • IP Internet protocol
  • the base station type RSU may be a fixed infrastructure entity that supports V2X applications and may exchange messages with other entities that support V2X applications, for example, the base station type roadside unit may exchange messages with other entities that support V2X applications over a Uu port.
  • the network equipment may also coordinate attribute management of the air interface.
  • the network device may include an evolved Node B (eNB or e-Node B) in an LTE system or an advanced long term evolution (LTE-A), or may include a next generation node B (gNB) in a fifth generation mobile communication technology (5G) NR system (also referred to as an NR system), or may include a centralized unit (CU) and a distributed unit (DU) in a cloud radio access network (Cloud RAN) system, which is not limited in the embodiments of the present application.
  • the network device may be a CU in a Cloud RAN system, or a DU, or a combination of a CU and a DU.
  • the network equipment may also include core network equipment, such as access and mobility management function (AMF), etc. Since the embodiments of the present application mainly involve access networks, the network equipment described in the following text refers to access network equipment unless otherwise specified.
  • core network equipment such as access and mobility management function (AMF), etc.
  • the device for realizing the function of the network device may be a network device, or may be a device capable of supporting the network device to realize the function, such as a chip system, which may be installed in the network device.
  • the technical solution provided in the embodiment of the present application is described by taking the device for realizing the function of the network device as an example that the network device is used as the device.
  • Interlaced resource blocks can include multiple equally spaced resource blocks (RBs), or in other words, are composed of multiple equally spaced resource blocks.
  • NR defines the interlacing of multiple resource blocks.
  • the interlacing value is m and the number of interlaced resource blocks is M.
  • a resource block group (or a group of interleaved resource blocks) may include resource blocks indexed as ⁇ m, M+m, 2M+m, 3M+m, ... ⁇ , where m ⁇ 0,1,...,M-1 ⁇ . M is an integer greater than 0.
  • the number of PRBs included in different interleaved resource blocks differs by at most 1 PRB, that is, the number of PRBs included in any two interleaved resource blocks differs by 0 PRBs or 1 PRB.
  • H is the number of all PRBs.
  • Authorized bands are usually only available to certain organizations or operators, while unlicensed bands are shared bands that can be used by different operators/organizations. Authorized bands can be referred to as authorized spectrum, authorized spectrum resources, etc., and unlicensed bands can be referred to as unlicensed spectrum, unlicensed spectrum resources, etc.
  • COT Channel occupancy time
  • Sidelink communication refers to a sidelink communication mode in which two peer user nodes directly communicate with each other. For example, sidelink communication can be performed between terminals.
  • the transmitter can send data to the receiver through the sidelink physical shared channel (PSSCH).
  • PSSCH sidelink physical shared channel
  • the receiver can feedback the hybrid automatic repeat request (HARQ) information of the data to the transmitter.
  • HARQ hybrid automatic repeat request
  • a dedicated HARQ feedback channel namely the sidelink physical feedback channel (PSFCH) is defined in sidelink communication.
  • Public PRB used for transmission by multiple terminal devices.
  • Public PRB is a PRB used by each terminal device, which can also be understood as a PRB used in common. Optional, it can also be understood as a frequency domain and code domain resource used in common. It should be noted that public PRB supports transmission by multiple terminal devices, but at a time, there may be transmission by one terminal device or multiple terminal devices on the public PRB. By transmitting on the public PRB, the OCB requirements can be met.
  • Dedicated PRB used for transmission by one terminal device. For a dedicated PRB, only one terminal device can transmit at a time.
  • all PRBs included in a PSFCH occasion (PSFCH occasion) except the common PRBs can be used as dedicated PRBs.
  • all PSFCH resources included in a PSFCH occasion except the common resources can be used as dedicated PSFCH resources.
  • At least one refers to one or more
  • plural refers to two or more.
  • And/or describes the association relationship of associated objects, indicating that three relationships may exist.
  • a and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.
  • the character “/” generally indicates that the previous and next associated objects are in an “or” relationship.
  • At least one of the following” or similar expressions refers to any combination of these items, including any combination of single or plural items.
  • At least one of a, b, or c can represent: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.
  • ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the size, content, order, timing, priority or importance of the multiple objects.
  • the first physical resource block (PRB) set and the second PRB set are only used to distinguish different PRB sets, and do not indicate the difference in priority, number of PRBs or importance of the two PRB sets.
  • the communication method provided in the present application can be applied to a 5G new radio (NR) unlicensed system, or can also be applied to other communication systems, for example, an Internet of Things (IoT) system, a vehicle-to-everything (V2X) system, a narrowband Internet of Things (NB-IoT) system, a long term evolution (LTE) system, a fifth generation (5G) communication system, or a hybrid architecture of LTE and 5G. It can also be a 5G new radio (NR) system, as well as new communication systems that will emerge in the future development of communications.
  • IoT Internet of Things
  • V2X vehicle-to-everything
  • NB-IoT narrowband Internet of Things
  • LTE long term evolution
  • 5G fifth generation
  • V2X vehicle-to-vehicle
  • V2I vehicle-to-roadside infrastructure
  • V2P vehicle-to-pedestrian
  • V2N vehicle-to-network
  • V2V refers to communication between vehicles
  • V2P refers to communication between vehicles and people (including pedestrians, cyclists, drivers, or passengers)
  • V2I refers to communication between vehicles and network devices, such as RSU.
  • V2N refers to communication between vehicles and base stations/networks.
  • the network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application.
  • a person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • the terminal device on the transmitting side can transmit data through PSSCH, and the terminal device on the receiving side can feedback the HARQ information corresponding to the data through PSFCH after receiving the data.
  • HARQ information usually occupies 1 bit, so one PSFCH can occupy one physical resource block (PRB) to transmit HARQ information.
  • PRB physical resource block
  • the UE needs to meet the OCB requirement after preempting the channel, that is, the bandwidth of the channel occupied during communication needs to be greater than a certain threshold.
  • one PSFCH can occupy multiple PRBs.
  • the maximum transmit power of the terminal device is equally divided into the multiple PSFCHs according to the number of PSFCHs to allocate the transmit power. Or the terminal device determines the number and power of the PSFCHs to be sent based on the transmit power determined based on the downlink path loss, the maximum transmit power, the number of PSFCHs to be sent, and the upper limit of the number of PSFCHs that can be sent.
  • the PSFCH occupies multiple PRBs, there is currently no specific implementation plan for how the UE sends each PSFCH.
  • the embodiment of the present application provides a sideline communication method and device, which is used to provide an implementation scheme for sending PSFCH through multiple PRBs.
  • the method and the device are based on the same inventive concept. Since the principles of solving problems by the method and the device are similar, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.
  • a terminal device it may receive side data sent by other terminal devices.
  • the terminal device that sends data is referred to as a sending-side terminal device
  • the terminal device that receives data is referred to as a receiving-side terminal device.
  • the sending-side terminal device may also have a receiving function
  • the receiving-side terminal device may also have a sending function.
  • the transmission of information occupies the first resource can be understood as transmitting the information on the first resource, or the resource used to transmit the information is the first resource.
  • the transmission of the first PSFCH occupies the first PRB set and the second PRB set corresponding to the first PSFCH, which can be understood as the first terminal device sending the first PSFCH on the first PRB set and the second PRB set corresponding to the first PSFCH.
  • the PSFCH resources used to send the first PSFCH are: the first PRB set and the second PRB set corresponding to the first PSFCH.
  • S201 A first terminal device receives X sideline data.
  • X is an integer greater than or equal to 1.
  • the X side data may come from one terminal device or from multiple terminal devices, which is not specifically limited here.
  • the first terminal device receives X side data from X terminal devices. That is, the first terminal device receives one side data from each of the X terminal devices.
  • the first terminal device receives X side data from Z terminal devices. Where Z is a value greater than or equal to 1 and less than or equal to X. That is, the first terminal device receives multiple side data from the same terminal device.
  • the first terminal device can receive the sideline data from the second terminal device, that is, the first terminal device receives a sideline data from the second terminal device.
  • the first terminal device receives 5 sideline data from 5 terminal devices. That is, the first terminal device receives one sideline data from each of the five terminal devices. Alternatively, the first terminal device receives 5 sideline data from 3 terminal devices. Among them, the first terminal device receives 1 sideline data from terminal device A, 3 sideline data from terminal device B, and 1 sideline data from terminal device C.
  • the sidelink data is data transmitted between terminal devices.
  • the sidelink data may be a sidelink transmission block (TB).
  • the first terminal device may receive a plurality of sideline data, wherein the plurality of sideline data includes the above-mentioned X That is, the amount of sideline data received by the first terminal device may be greater than or equal to X.
  • the first terminal device may determine at least one PSFCH to be sent based on the multiple sidelink data, and determine the X PSFCHs corresponding to the above X sidelink data in the at least one PSFCH to be sent.
  • the above at least one PSFCH may include a PSFCH carrying HARQ information and/or a PSFCH carrying conflict information.
  • the HARQ information indicates whether the first terminal device successfully decodes the sidelink data. If the decoding is successful, the HARQ information is a positive acknowledgment (ACK). If the first terminal device does not successfully decode the sidelink data, the HARQ information is a negative acknowledgment (NACK).
  • the conflict information indicates that the first terminal device has detected the sidelink control information (SCI) of other terminal devices, and the reserved resources indicated by the SCI conflict.
  • one PSFCH carries one HARQ information, or one PSFCH carries one conflict information.
  • the sidelink data received by the first terminal device may be broadcast data, multicast data or unicast data.
  • the following describes the manner in which the first terminal device determines whether to send the PSFCH carrying HARQ information in conjunction with the transmission of the sidelink data.
  • the first terminal device determines to send a PSFCH carrying HARQ information
  • the first terminal device determines to send a PSFCH carrying HARQ information
  • the first terminal device determines to send a PSFCH carrying the HARQ information.
  • the first terminal device detects the SCI of the scheduling data, and the reserved resources indicated by the SCI conflict occurs, that is, the reserved resources indicated by the SCI conflict with the reserved resources indicated by another SCI, or the time slot where the reserved resources indicated by the SCI are located is a time slot where the first terminal device does not expect to receive data.
  • the above-mentioned X PSFCHs may include a PSFCH carrying HARQ information and/or a PSFCH carrying conflict information.
  • the X PSFCHs include A HARQ information corresponding to the A sidelink data, and X-A PSFCHs carrying conflict information.
  • S201 may be understood as or replaced by "the first terminal device receives X' sidelink data, X' is less than or equal to X.”
  • A may be equal to 0, that is, the X PSFCHs are all PSFCHs carrying conflicting information.
  • the above S201 may also not be performed.
  • the first terminal device may determine to send X PSFCHs among at least one PSFCH to be sent through the following scheme 1 or scheme 2.
  • X PSFCHs can be determined by the following example A or example B.
  • Example A If P PSFCH,one +10log 10 N sch,Tx,PSFCH ⁇ P total , then the X PSFCHs are equal to the number of the at least one PSFCH to be sent, that is, the X PSFCHs are the at least one PSFCH to be sent.
  • PL is the path loss value measured according to the reference signal resource.
  • the reference signal (reference signal, RS) resource can be an RS resource used by the first terminal device to determine the power of the physical uplink shared channel (physical uplink shared channel, PUSCH) transmission scheduled by the downlink control information (downlink control information, DCI) format 0-0, or it can be an RS resource corresponding to the synchronization signal/physical broadcast channel block (sync signal/physical broadcast channel, SSB) block for obtaining the master information block (master indication block, MIB).
  • RS reference signal
  • Example B If P PSFCH,one +10log 10 N sch,Tx,PSFCH > P total , the first terminal device determines X PSFCHs from at least one PSFCH to be sent, where X ⁇ N sch,Tx,PSFCH , wherein, if 1 ⁇ i ⁇ k, Mi represents the number of PSFCHs carrying HARQ information with a priority value of i in at least one PSFCH to be sent. If k ⁇ i ⁇ K, Mi represents the number of PSFCHs carrying conflicting information with a priority value of ik in at least one PSFCH to be sent. k is greater than or equal to 1 and less than or equal to K, and k represents the maximum priority value of the PSFCH carrying HARQ information.
  • Mi represents the number of PSFCHs carrying HARQ information with a priority value of i in at least one PSFCH to be sent. If 8 ⁇ i ⁇ K, Mi represents the number of PSFCHs carrying conflicting information with a priority value of i-8 in at least one PSFCH to be sent. K satisfies The maximum value of . If there is no value of K that can satisfy Then K is equal to 0. The higher the priority value, the lower the priority.
  • the X PSFCHs may be determined by example C or example D.
  • Example C if P PSFCH, one + 10log 10 N max,PSFCH ⁇ P total , then the above X PSFCHs are equal to N max,PSFCH , that is, the first terminal device determines N max,PSFCH PSFCHs in at least one PSFCH to be sent. Specifically, for the PSFCHs carrying HARQ information in at least one PSFCH to be sent, the first terminal device may sort them in ascending order of priority values to determine W PSFCHs. Among them, if the number of PSFCHs carrying HARQ information is greater than or equal to X, then W may be equal to X, and the determined W PSFCHs are the above X PSFCHs.
  • the PSFCHs carrying HARQ information may be sorted in ascending order of priority values to determine XW PSFCHs, and the above X PSFCHs include the above W PSFCHs and the above XW PSFCHs.
  • Example D If P PSFCH, one + 10log 10 N max, PSFCH > P total , the first terminal device determines X PSFCHs in at least one PSFCH to be sent, X ⁇ N max, PSFCH .
  • the method of determining X PSFCHs in at least one PSFCH to be sent is similar to the method of determining X PSFCHs in at least one PSFCH to be sent in Example B, and will not be described in detail here.
  • Solution 2 If the high-level parameter dl-P0-PSFCH is not provided, the first terminal device selects X PSFCHs from at least one PSFCH to be sent, first in ascending order of the priority values of the PSFCHs carrying HARQ information, and then in ascending order of the priority values of the PSFCHs carrying conflict information.
  • S202 The first terminal device sends X PSFCHs corresponding to the X sidelink data.
  • X PSFCHs may occupy the first PRB set and X second PRB sets. That is, the frequency domain resources of the X PSFCHs are the first PRB set and the X second PRB set.
  • the first PRB set includes N PRBs, N PRBs are public PRBs, and N is an integer greater than 1.
  • the above-mentioned N PRBs are used for (or support) multiple terminal devices for transmission, but in actual transmission, only one terminal device may transmit on the N PRBs.
  • the public PRBs used by different terminal devices are the same PRBs. Exemplarily, the public PRBs are PRBs that can be used by any terminal device.
  • the public PRBs can be understood as the same PRBs used by different terminal devices in the same PSFCH time domain resource.
  • the public PRBs can be understood as the PRBs used by any terminal device that sends PSFCH in the PSFCH time domain resource. That is, the public PRBs are PRBs that any terminal device in the system is eligible to use. In other words, the public PRBs are PRBs that can be used by any terminal device in the system.
  • the first terminal device, the second terminal device, and the third terminal device all send PSFCH in the PSFCH time domain resources, and the resources used by the three terminal devices to send PSFCH all include the common PRB.
  • the first PRB set may include all or part of the PRBs in an interleaved resource block.
  • the first PRB set may be part of all PRBs included in the PSFCH symbol.
  • the first PRB set may be two PRBs with the largest and smallest frequency domain indexes among all PRBs included in the PSFCH symbol.
  • the first PRB set may be a PRB at the edge of the bandwidth among all PRBs included in the PSFCH symbol.
  • the common code domain resources corresponding to the N common PRBs in the present application may be a cyclic shift (CS) value or a CS pair, or all CS pairs configured in the resource pool.
  • CS cyclic shift
  • the first PRB set may be replaced with a first resource set, the first resource set including N common resources, specifically N groups of frequency domain code domain resources, one group of frequency domain code domain resources including one or more frequency domain code domain resources.
  • a frequency domain code domain resource may be understood as a resource consisting of a PRB and a CS value.
  • one common resource includes two frequency domain code domain resources obtained by combining a CS pair (for ease of description, referred to as a designated CS pair) with a PRB.
  • the frequency domain code domain resources consisting of each PRB in the N PRBs and the designated CS pair are common resources, while the frequency domain resources consisting of the PRB and other CS pairs are not common resources.
  • the first terminal device transmits in the common resource, it will only use one of the CS pairs corresponding to the PRB.
  • one common resource includes a frequency domain code domain resource obtained by combining one CS (for ease of description, referred to as a designated CS) with one PRB.
  • the frequency domain code domain resource composed of each PRB in the N PRBs and the designated CS is a common resource, while the frequency domain resource composed of the PRB and other CSs is not a common resource.
  • the CS values corresponding to the N PRBs may be the same or different.
  • the N frequency-domain code domain resources may be selected from all frequency-domain code domain resources corresponding to the N PRBs in ascending order of CS values (0 to 11) Then sort in ascending order of PRB index (or first in ascending order of PRB index and then in ascending order of CS value), the common frequency domain and code domain resources can be distributed according to a fixed step size, for example, the step size is 6.
  • one common resource includes all frequency domain code domain resources corresponding to one PRB. That is to say, all frequency domain code domain resources corresponding to one PRB are not dedicated resources.
  • the first terminal device transmits in the common resource, it will only use one of all frequency domain code domain resources corresponding to one PRB.
  • the above scheme designs public resources from two dimensions, frequency domain and code domain, and can more effectively utilize code domain resources on public PRBs.
  • the second PRB set includes m PRBs, and the m PRBs can be dedicated PRBs, where m is an integer greater than or equal to 1.
  • the above m PRBs are used for transmission by one terminal device.
  • Dedicated PRBs can be understood as PRBs used by a certain terminal device. Different terminal devices use different dedicated PRBs.
  • Dedicated PRBs can be understood as different PRBs used by different terminal devices that send PSFCH in the same PSFCH time domain resource.
  • the second PRB set may be replaced by a second resource set, which includes m dedicated resources, specifically m groups of frequency domain and code domain resources.
  • m dedicated resources specifically m groups of frequency domain and code domain resources.
  • the design idea of dedicated resources is similar to that of public resources, and specific reference may be made to the description of public resources in the first PRB, and the repetitions will not be described in detail.
  • the PRBs occupied by the above X PSFCHs correspond to the same PSFCH occasion (PSFCH occasion) in the time domain, that is, the PRBs occupied by the above X PSFCHs belong to the PRB set corresponding to the same PSFCH occasion in the time domain. That is, the time domain resources used by the X PSFCHs are the same.
  • the first terminal device sends the X PSFCHs in the same time slot, or the first terminal device sends the X PSFCHs in the same PSFCH time domain resource. That is, the resources used by the X PSFCHs are all located in all time-frequency resources corresponding to the same PSFCH time domain resource.
  • PSFCH occasion can also be called PSFCH symbol or PSFCH time domain resource.
  • the above PSFCH opportunity may include a symbol for transmitting PSFCH (hereinafter referred to as PSFCH symbol).
  • PSFCH symbol a symbol for transmitting PSFCH
  • the symbol before the PSFCH symbol is a copy of the PSFCH symbol (i.e., the contents of the PSFCH AGC symbol and the PSFCH symbol are exactly the same) and is used as AGC.
  • the N common PRBs may be preconfigured, preset, or indicated by a network device.
  • the three indication methods are in an "or" relationship.
  • the N common PRBs may be PRBs specified in a PRB set corresponding to a PSFCH opportunity.
  • the N common PRBs may be PRBs at the edge of the bandwidth.
  • they may be the first and last PRBs in the RB set (the two PRBs with the smallest and largest indexes in the RB set).
  • they may be the first and last PRBs in the resource pool (the two PRBs with the smallest and largest indexes in the RB set).
  • a PSFCH opportunity includes PRBs with indexes of 0 to 51, and the N common PRBs may include PRBs with indexes of 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, and 50.
  • the network device may specifically indicate the common PRBs in the PRB set corresponding to the PSFCH opportunity through a bitmap.
  • the network device indicates the common PRBs in the PSFCH resources corresponding to the PSFCH symbol through a bitmap.
  • the PSFCH resource is a set of PRBs configured for transmitting PSFCH in all PRBs corresponding to the PSFCH symbol.
  • the PSFCH resource is a set of PRBs configured for transmitting PSFCH in all PRBs corresponding to the PSFCH symbol for transmitting PSFCH carrying HARQ information.
  • the bitmap may include Y bits, wherein one bit may indicate whether the corresponding PRB is a common bit, and Y is an integer greater than or equal to N. For example, if the value of a bit is a first value indicating that the corresponding PRB is a common bit, and the value is a second value indicating that the corresponding PRB is not a common PRB. The first value may be 0, the second value may be 1, or the first value may be 1 and the second value may be 0. It can be understood that in the present application, the number of bits having the first value in the bitmap is N, indicating N common PRBs. The length of the bitmap (that is, the number of bits) may be less than or equal to the number of PRBs included in the PRB set corresponding to the PSFCH opportunity.
  • the PRB corresponding to the first bit of the bitmap may be preset, preconfigured, or indicated by a network device, which is not specifically limited here.
  • the first bit of the bitmap may correspond to the PRB with the smallest index in the PRB set corresponding to the PSFCH opportunity.
  • the N common resources may be composed of resources (time-frequency resources) specified in a resource set corresponding to a PSFCH opportunity and a corresponding CS pair.
  • the network device may specifically indicate the common PRBs in the PRB set corresponding to the PSFCH opportunity through a bitmap, as described above.
  • the common PRB and the corresponding CS pair constitute a common resource.
  • the CS pair corresponding to the common PRB can be the first CS pair in the CS pairs configured in the resource pool.
  • the total number of CS pairs is 6 pairs, namely ⁇ 0,6 ⁇ ; ⁇ 1,7 ⁇ ; ⁇ 2,8 ⁇ ; ⁇ 3,9 ⁇ ; ⁇ 4,10 ⁇ ; ⁇ 5,11 ⁇ , and the CS pair corresponding to the common PRB is ⁇ 0,6 ⁇ .
  • a PSFCH opportunity includes PRBs with indexes of 0 to 51, and N common resources may include PRBs with indexes of 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 and frequency domain code domain resources corresponding to the CS pair of ⁇ 0,6 ⁇ , as shown in Figure 3B.
  • the CS pair can be one of the 6 CS pairs.
  • the CS pair can be preset, or preconfigured, or indicated by a network device.
  • the above-mentioned N common resources may be composed of resources (time-frequency resources) specified in the resource set corresponding to the PSFCH opportunity and a corresponding CS value.
  • the network device may specifically indicate the common PRB in the PRB set corresponding to the PSFCH opportunity through a bitmap, as described above.
  • the common PRB and the corresponding CS pair constitute common resources.
  • the CS value corresponding to the common PRB may be the first CS value in the CS value configured by the resource pool.
  • the CS values configured by the resource pool include 12, namely 0; 1; 2; 3; 4; 5; 6; 7; 8; 9; 10; 11, and the CS value corresponding to the common PRB is 0.
  • a PSFCH opportunity includes PRBs with indexes of 0 to 51, and N common resources may include frequency domain code domain resources composed of PRBs with indexes of 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 and the corresponding CS value 0, as shown in FIG3C.
  • the CS value may be one of the 12 CS values.
  • the CS value may be preset, preconfigured, or indicated by the network device.
  • the N common PRBs may belong to an interleaved resource block, which may be an interleaved resource block specified in an interleaved resource block set corresponding to a PSFCH opportunity.
  • the positions of the N common PRBs in the interleaved resource block may be preset, preconfigured, or indicated by a network device.
  • a PSFCH opportunity includes PRBs with indices 0 to 51, which include interleaved resource blocks with indices 1 to 5, and the interleaved resource block with index 1 can be used as a common PRB.
  • the remaining PRBs are dedicated PRBs.
  • the positions of the N common PRBs in the interleaved resource block may be indicated by a bitmap.
  • the manner in which the network device indicates the positions of the N common PRBs in the interleaved resource block by a bitmap is similar to the manner in which the network device may indicate the common PRBs in the PRB set corresponding to the PSFCH opportunity by a bitmap, and will not be further described here.
  • the N common PRBs may be defaulted to the PRBs included in the interleaved resource blocks with the largest index or the smallest index, or the interleaved resource blocks in the middle position in the interleaved resource block set corresponding to the PSFCH opportunity.
  • the N common resources may be composed of a PRB included in an interleaved resource block set corresponding to the PSFCH opportunity and a corresponding CS pair.
  • the N common resources may be a PRB included in an interleaved resource block with the largest index or the smallest index, or an interleaved resource block in the middle position in the interleaved resource block set corresponding to the PSFCH opportunity in the frequency domain, and correspond to a CS pair in the code domain.
  • the CS pair may be one of six CS pairs.
  • the CS pair may be preset, preconfigured, or indicated by a network device.
  • the N common resources may include a PRB included in an interleaved resource block set corresponding to the PSFCH opportunity in the frequency domain, and correspond to a CS value in the code domain.
  • the CS value may be one of 12 CS values.
  • the CS value may be preset, preconfigured, or indicated by a network device.
  • the transmission of the first PSFCH among the X PSFCHs occupies the above-mentioned first PRB set and the second PRB set corresponding to the first PSFCH.
  • it can also be described as sending the first PSFCH on the above-mentioned first PRB set and the second PRB set corresponding to the first PSFCH. That is, the first PSFCH repeatedly sends the first PSFCH on each PRB in the above-mentioned first PRB set and the second PRB set corresponding to the first PSFCH.
  • the first PSFCH sent in the second PRB set is truly valid, that is, the receiving terminal device corresponding to the first PSFCH may not receive the first PSFCH transmitted on the first PRB set, and receive the first PSFCH on the second PRB set corresponding to the first PSFCH. Since the first PRB set is a public PRB set. Therefore, the transmission signal on the PRB set includes but is not limited to the first PSFCH, so the receiving terminal device of the first PSFCH cannot identify the first PSFCH. The receiving terminal device of the first PSFCH can only receive the first PSFCH on the dedicated PRB corresponding to the first PSFCH.
  • the first PSFCH sent on the first PRB set may be the first PSFCH itself, or it may be a variation of the first PSFCH, for example, the first PSFCH after cyclic shift processing.
  • the cyclic shifts of any two first PSFCHs sent on the first PRB set may be the same or different, and are not specifically limited here.
  • the first PSFCH is repeatedly sent on each PRB in the first PRB set.
  • the first PSFCH is repeatedly sent on each PRB in the first PRB set, and the CS value corresponding to the PSFCH sent on each PRB is different.
  • the first PSFCH is repeatedly sent on each PRB in the second PRB set.
  • the first PSFCH is repeatedly sent on each PRB in the second PRB set, and the CS value corresponding to the PSFCH sent on each PRB is different.
  • the first PSFCH can be understood as PSFCH format 0 or PSFCH sequence
  • the CS value corresponding to the PSFCH is the CS value corresponding to the PSFCH sequence.
  • the first terminal device may determine the second PRB set corresponding to the first PSFCH in the following manner: according to the location of resources used by data corresponding to the first PSFCH, determine the second PRB set corresponding to the first PSFCH in the PRB set corresponding to the PSFCH opportunity.
  • the second PRB set corresponding to the first PSFCH can be determined in the dedicated PRB set corresponding to the PSFCH opportunity according to the starting subchannel or all subchannels of the subchannel used by the data corresponding to the first PSFCH and the time slot where the data is located.
  • the dedicated PRB set corresponding to the PSFCH opportunity is the set of remaining PRBs in all PSFCH resources corresponding to the PSFCH opportunity, excluding the common PRB set.
  • the first terminal device determines an available PRB set according to the time slot and the subchannel, and determines the available frequency domain code domain resources in the frequency domain code domain resources corresponding to the PRB set. Assuming that all code domain resources corresponding to the public PRB set are not dedicated resources, the corresponding PRB set in the PSFCH time slot can be determined according to the time slot and the subchannel. Specifically, the PRB set may include an index belonging to of PRB.
  • N subch is the number of sub-channels, which can be understood as the sub-channels included in an RB set or the sub-channels included in a resource pool.
  • the PSSCH transmitted in this PSSCH time slot feeds back the corresponding HARQ information in this PSFCH opportunity.
  • the time slot where the PSFCH opportunity is located is the PSSCH time slot.
  • N is the minimum value.
  • the number of the second PRB set may be less than or equal to in, It is 1 or the number of subchannels used by PSSCH. That is, if PSSCH uses more than one subchannel, the PSFCH resources corresponding to each of the multiple subchannels can be used to transmit the PSFCH corresponding to the data.
  • the frequency domain and code domain resources corresponding to the first PSFCH are: in, The number of CS pairs configured in the resource pool.
  • the first terminal device determines a resource set available for transmitting the first PSFCH in the PSFCH resource corresponding to the PSFCH opportunity according to the starting subchannel or the number of subchannels and the time slot used by the data corresponding to the first PSFCH.
  • the number of frequency domain and code domain resources in the resource set available for transmitting the first PSFCH is in, It is the number of all PSFCH resources corresponding to the PSFCH opportunity.
  • the number of public PRBs and public code domain resources corresponding to the public PRBs, where the public code domain resources can be a CS value or a CS pair or all CS pairs in the resource pool. The meanings of other parameters refer to the above description and will not be repeated here.
  • the sorting method of the resource set available for the first PSFCH may be to sort by frequency domain resources first and then by code domain resources. Alternatively, it may be to sort by code domain resources first and then by frequency domain resources. Specifically, sorting by frequency domain resources is to sort by PRB index from small to large or by PRB index in ascending order. Sorting by code domain resources is to sort by CS from small to large or by CS in ascending order.
  • the PSFCH resources may only include PSFCH resources used to transmit HARQ information.
  • the PSFCH resources may only include PSFCH resources used to transmit conflict information.
  • the PSFCH resources may include PSFCH resources used to transmit conflict information or HARQ information.
  • the first resource set is N public resources (frequency domain and code domain resources).
  • the dedicated resource set is a dedicated PSFCH resource set excluding N public resources from all PSFCH resources corresponding to the PSFCH opportunity. That is, the dedicated resource set is a set of remaining resources after excluding N public resources from all PSFCH resources corresponding to the PSFCH opportunity.
  • the N public resources can be one CS pair corresponding to N PRBs, or one CS value corresponding to N PRBs, or all CS pairs in a resource pool corresponding to N PRBs.
  • N PRBs can correspond to the same CS value or different PRBs can correspond to different CS values.
  • N PRBs can correspond to the same CS pair or different PRBs can correspond to different CS pairs.
  • the frequency domain and code domain resources corresponding to the first PSFCH are: in, The number of CS pairs configured in the resource pool. It can be a public resource, and the frequency domain resource corresponding to the public resource can be the above-mentioned public code domain resource.
  • the public resource is the public CS value corresponding to the public PRB, and the CS value corresponding to the public CS value (public CS value + 6) is used for multicast option option 1.
  • the determination method of the frequency domain code domain resource corresponding to the first PSFCH is the same as above, and will not be repeated here. The difference is that in this implementation method, is a PRB set (including dedicated PRBs and common PRBs) used to transmit PSFCH. In this case, the number of m dedicated resources may be less than or equal to the number of frequency-domain and code-domain resources corresponding to the first PSFCH.
  • the N PRBs in the first PRB set are referred to as common PRBs, and the m PRBs in the second PRB set are referred to as dedicated PRBs.
  • the number m of PRBs included in the second PRB sets may be the same or different, and the present invention does not limit this.
  • the transmit power of the first PSFCH on any PRB in the first PRB set is less than or equal to the transmit power on any PRB in the second PRB set. That is, the transmit power of the first PSFCH on any public PRB is less than or equal to the transmit power on any dedicated PRB.
  • the transmission power of the first PSFCH on any PRB in the first PRB set and the second PRB set is obtained by equally dividing the transmission power of the first PSFCH according to the total number of PRBs included in the first PRB set and the second PRB set (i.e., N+m). In the above manner, the transmission power of the first PSFCH on any two occupied PRBs is the same.
  • the transmit power of the first PSFCH on any occupied PRB is Or the transmission power of the first PSFCH on any occupied PRB satisfies the following formula: P PSFCH1 -10log 10 (N+m) [dBm], where P PSFCH1 is the transmission power of the first PSFCH.
  • the first PSFCH is repeatedly transmitted N+1 times on N common PRBs and one dedicated PRB, and the transmission power of the first PSFCH on any occupied PRB (that is, the transmission power of each first PSFCH) is the transmission power of the first PSFCH.
  • the transmission power of the first PSFCH on any occupied PRB satisfies the following formula: P PSFCH1 -10log 10 (N+1) [dBm], where P PSFCH1 is the transmission power of the first PSFCH.
  • the transmit power of the first PSFCH on any PRB in the first PRB set is equal to the transmit power on any PRB in the second PRB set (that is, any dedicated PRB).
  • the total transmit power of the first PSFCH on the first PRB set (that is, N common PRBs) and the total transmit power on the second PRB set (that is, m dedicated PRBs) are determined according to the transmit power of the first PSFCH and the adjustment factor.
  • the adjustment factor may be a fixed value, a preset value, a preconfigured value, a value indicated by a network device, and the like.
  • the total transmit power of the first PSFCH on the first PRB set is Satisfies the following formula:
  • P1 is the transmission power of the first PSFCH
  • ⁇ 1 is the adjustment factor
  • ⁇ 1 is greater than 0 and less than 1.
  • the total transmit power of the first PSFCH on the first PRB set is Satisfies the following formula:
  • ⁇ 1 is the adjustment factor.
  • the total transmit power of the first PSFCH on the first PRB set is Satisfies the following formula:
  • ⁇ 2 is the adjustment factor.
  • the transmission power of the first PSFCH on any public PRB can be made less than or equal to the transmission power on any dedicated PRB.
  • the above ⁇ 1 can be less than or equal to Take a PSFCH transmission occupying one PRB as an example.
  • m 1, and the above ⁇ 1 can be less than
  • the total power of the first PSFCH on the common PRB may be less than or equal to the total power on the second PRB, and in this case, the above ⁇ 1 may be less than or equal to 1/2.
  • the above ⁇ 1 can be greater than or equal to
  • the above ⁇ 1 is less than Take a PSFCH transmission occupying one PRB as an example.
  • m 1, and the above ⁇ 1 can be greater than or equal to
  • the above ⁇ 2 may be greater than or equal to 0.
  • the above ⁇ 2 is less than
  • a transmission of a PSFCH occupies one PRB.
  • the total transmit power of the first PSFCH on the second PRB set is is greater than a power threshold, and the power threshold is less than the transmit power of the first PSFCH.
  • the remaining power after deducting the power threshold from the transmit power of the first PSFCH is the total transmit power of the first PSFCH on the first PRB set.
  • the power threshold may be preset, preconfigured, or indicated by a network device.
  • the transmit power of the first PSFCH on one PRB in the second PRB set is obtained by equally dividing the transmit power of the first PSFCH on the PRBs occupied by the first PSFCH and the adjustment factor. The remaining power (the transmit power of the first PSFCH minus the total transmit power of the first PSFCH on the second PRB set) is used for transmission on the first PRB set.
  • the transmit power of the first PSFCH on each PRB in the second PRB set is The total transmit power of the first PSFCH on the second PRB set Satisfies the following formula:
  • the transmit power of the first PSFCH on each PRB in the first PRB set is
  • P1 is the transmission power of the first PSFCH
  • ⁇ 2 is the adjustment factor
  • ⁇ 2 is greater than 0.
  • the adjustment factor or power threshold may be related to the degree of channel congestion, the number of LBT failures, the number of retransmissions, etc. Specifically, the greater the degree of channel congestion, the smaller the adjustment factor ⁇ 1, the larger the adjustment factor ⁇ 1, the larger the adjustment factor ⁇ 2, and the greater the total transmission power of the first PSFCH on the second PRB set. This is because when the channel is congested, the power used to transmit valid information should be increased to ensure performance. When the number of LBT failures is too high, the power allocated to valid information should also be increased to ensure performance. When the number of retransmissions is too high, the power allocated to valid information should also be increased to ensure performance.
  • the power originally used to send the first PSFCH on a dedicated PRB is used to send multiple first PSFCHs (that is, the first PSFCH is sent on a dedicated PRB and N public PRBs), and the PSFCH transmitted on the public PRB is invalid. Therefore, the transmission power of the first PSFCH transmitted on the dedicated PRB will be reduced.
  • the above method improves the signal quality of the valid signal (that is, the first PSFCH transmitted on the dedicated PRB) by reducing the transmission power of the first PSFCH on the public PRB and increasing the transmission power of the first PSFCH on the dedicated PRB, thereby improving the transmission performance.
  • the transmit power of the first PSFCH on any PRB in the first PRB set can be of Or satisfy the following formula:
  • the transmission power of the first PSFCH on any PRB in the second PRB set (that is, any dedicated PRB) can be of Or satisfy the following formula:
  • the transmission of the first PSFCH in the first PRB set and the second PRB set meets the power spectral density limit (PSD limit). If the transmission of the first PSFCH in the first PRB set and the second PRB set does not meet the power spectral density limit, the transmission of part of the first PSFCH in the first PRB set and the second PRB set can be discarded. Or the PRB resources in the second PRB set are replaced. That is, resources that can meet the PSD limit are selected from the resource set available for the first PSFCH.
  • PSD limit power spectral density limit
  • the above describes the transmission method of the first PSFCH among the X PSFCHs.
  • the following describes the transmission method of the other PSFCHs among the X PSFCHs.
  • the transmission manner of other PSFCHs in the X PSFCHs is the same as that of the first PSFCH.
  • the second PSFCH may also occupy the first PRB set and the second PRB set corresponding to the second PSFCH. It should be understood that the first PSFCH and the second PSFCH occupy the same first PRB set, but different second PRB sets.
  • the allocation method of the transmission power of the second PSFCH on the occupied PRB is the same as the allocation method of the transmission power of the first PSFCH on the occupied PRB.
  • the allocation method of the transmission power of the second PSFCH on any occupied PRB can be specifically referred to the allocation method of the transmission power of the first PSFCH on any occupied PRB, which will not be described in detail here.
  • the X PSFCHs are as follows: the transmission of PSFCH#1 occupies all 11 PRBs of interleaved resource block #1, and the first PRB of interleaved resource block #2.
  • the transmission of PSFCH#2 occupies all 11 PRBs of interleaved resource block #1, and the first PRB of interleaved resource block #3.
  • the transmission of PSFCH#3 occupies all 11 PRBs of interleaved resource block #1, and the first PRB of interleaved resource block #4.
  • the transmission of PSFCH#4 occupies all 11 PRBs of interleaved resource block #1, and the first PRB of interleaved resource block #5.
  • the transmission of PSFCH#5 occupies all 11 PRBs of interleaved resource block #1 and the second PRB of interleaved resource block #2, as shown in FIG5 .
  • the transmission power of each PSFCH in X PSFCHs may be determined by the following method 1 or method 2.
  • the maximum transmit power Ptotal of the first terminal device can be obtained by equally dividing the maximum transmit power Ptotal of the first terminal device according to the value of X.
  • Method 2 The transmission power of each PSFCH among X PSFCHs can be determined based on at least one of the priority of at least one PSFCH to be transmitted, the maximum number of PSFCHs to be transmitted, and the maximum transmission power of the first terminal device, wherein at least one PSFCH includes X PSFCHs.
  • the transmit power of each of the X PSFCHs will be described below in conjunction with different determination methods of the X PSFCHs in S301.
  • Pi PPSFCH,one , that is, the transmission power of each PSFCH in the X PSFCHs is PPSFCH,one .
  • Pi min( Ptotal - 10log10X , PPSFCH,one ), that is, the transmission power of each PSFCH in the X PSFCHs is min( Ptotal - 10log10X , PPSFCH,one ).
  • Pi PPSFCH,one , that is, the transmission power of each PSFCH in the X PSFCHs is PPSFCH,one .
  • Pi min( Ptotal - 10log10X , PPSFCH,one ), that is, the transmission power of each PSFCH in the X PSFCHs is min( Ptotal - 10log10X , PPSFCH,one ).
  • the transmission mode of other PSFCHs in the above X PSFCHs is different from that of the first PSFCH.
  • the second PSFCH may also occupy the second PRB set corresponding to the second PSFCH. It should be understood that the second PRB set occupied by the first PSFCH and the second PSFCH is different.
  • the difference here can be understood as different frequency domain resources, or it can be understood as different frequency domain code domain resources (specifically, it can include two situations: different frequency domain resources and the same frequency domain resources but different code domain resources).
  • each PSFCH occupies both the public PRB and the dedicated PRB
  • only one PSFCH i.e., the first PSFCH
  • the transmission of other PSFCHs only occupies the dedicated PRB.
  • the minimum occupied bandwidth requirement can be met while avoiding the use of excessive power to transmit invalid information.
  • the first PSFCH may be the PSFCH with the lowest priority among the X PSFCHs. Taking the smaller the priority value, the higher the priority as an example, the first PSFCH may be the PSFCH with the largest priority value among the X PSFCHs. In a specific example, if the X PSFCHs are all PSFCHs carrying HARQ information, the first PSFCH may be the PSFCH with the largest priority value among the X PSFCHs. If the X PSFCHs include a PSFCH carrying HARQ information and a PSFCH carrying conflict information, the first PSFCH may be the PSFCH with the largest priority value among the X PSFCHs carrying conflict information.
  • X PSFCHs include PSFCH#1 to PSFCH#5, and PSFCH#1 has the lowest priority. If one transmission of a PSFCH occupies 1 PRB, then the X PSFCHs are as follows: the transmission of PSFCH#1 occupies all 11 PRBs of interleaved resource block #1 and the first PRB of interleaved resource block #2. The transmission of PSFCH#2 occupies the first PRB of interleaved resource block #3. The transmission of PSFCH#3 occupies the first PRB of interleaved resource block #4. The transmission of PSFCH#4 occupies the first PRB of interleaved resource block #5. The transmission of PSFCH#4 occupies the second PRB of interleaved resource block #2. As shown in Figure 6.
  • the transmission power of the second PSFCH on any PRB in the second PRB set may be times the transmission power of the second PSFCH.
  • m the transmission power of the second PSFCH on the occupied dedicated PRB is the transmission power of the second PSFCH.
  • the transmission power of each PSFCH in the X PSFCHs may be determined by the following method 1 or the above method 2 or the following method 3.
  • methods 1 and 2 please refer to the above description and will not be repeated here.
  • the transmission power of PSFCH#1 can be determined based on the maximum transmission power of the first terminal device, the total number of PRBs occupied by X PSFCHs (i.e., N+X ⁇ m), and the number of PRBs occupied by PSFCH#1. If one transmission of a PSFCH occupies one PRB, this mode can also be described as: the transmission power of PSFCH#1 can be determined based on the maximum transmission power of the first terminal device, the total number of transmissions of X PSFCHs, and the number of transmissions of PSFCH#1.
  • the transmit power of the first PSFCH is determined according to the maximum transmit power Ptotal of the first terminal device, the total number of PRBs occupied by X PSFCHs (ie, N+X ⁇ m), and the number of PRBs occupied by the first PSFCH (ie, N+m).
  • the transmit power P1 of the first PSFCH satisfies the following formula:
  • the transmission power of the second PSFCH is determined according to the maximum transmission power Ptotal of the first terminal device, the total number of PRBs occupied by X PSFCHs (ie, N+X ⁇ m), and the number of PRBs occupied by the second PSFCH (ie, m).
  • the transmission power P1 of the first PSFCH satisfies the following formula:
  • the number of PSFCHs transmitted on the public PRB can be reduced, so that the transmission power of the effective signal (i.e., the PSFCH carried on the dedicated PRB) can be improved, and then the signal quality of the effective signal (i.e., the PSFCH transmitted on the dedicated PRB) can be improved, and the transmission performance can be improved. Therefore, the above method can further improve the performance of PSFCH transmission under the premise of meeting the OCB requirements.
  • the SL communication of the first terminal device can meet the OCB requirements.
  • the signal quality of the effective signal that is, the first PSFCH transmitted on the dedicated PRB
  • the above method can improve the performance of PSFCH transmission while meeting the OCB requirements.
  • the transmission of the first PSFCH among X PSFCHs occupies N public PRBs and one dedicated PRB, and the transmission of other PSFCHs occupies only dedicated PRBs
  • the number of PSFCHs transmitted on public PRBs can be reduced, thereby improving the transmission power of effective signals (i.e., PSFCHs carried on dedicated PRBs), and further improving the signal quality of effective signals (i.e., PSFCHs transmitted on dedicated PRBs), thereby improving transmission performance. Therefore, the above method can further improve the performance of PSFCH transmission while meeting the OCB requirements.
  • the present application provides a flow chart of another sideline communication method.
  • the difference between this method and the method described in FIG2 is that in the method described in FIG2, at least one PSFCH transmission occupies N PRBs and m dedicated PRBs, while in this sideline communication method, one PSFCH transmission only occupies N public PRBs, and other PSFCH transmissions only occupy dedicated PRBs.
  • FIG. 7 a flow chart of another side communication method provided by the present application is shown, and the method includes:
  • a first terminal device receives X sideline data, where X is an integer greater than or equal to 1.
  • the first terminal device sends Y PSFCHs, where Y is an integer greater than or equal to X.
  • the transmission of PSFCH#A among the Y PSFCHs occupies the first PRB set
  • the transmission of PSFCH#B among the Y PSFCHs occupies the second PRB set corresponding to PSFCH#B.
  • PSFCH#A corresponds to the first PSFCH in the second aspect of the invention
  • PSFCH#B corresponds to the second PSFCH in the second aspect of the invention.
  • first PRB set and the second PRB set For the first PRB set and the second PRB set, reference may be made to the relevant descriptions about the first PRB set and the second PRB set in the method described in FIG2 , and will not be repeated here.
  • PSFCH#A may be any PSFCH among X PSFCHs.
  • PSFCH#A may be the PSFCH with the lowest priority among the X PSFCHs. Taking the example that the smaller the priority value, the higher the priority, PSFCH#A may be the PSFCH with the highest priority value among the X PSFCHs. In a specific example, if the X PSFCHs are all PSFCHs carrying HARQ information, then PSFCH#A may be the PSFCH with the highest priority value among the X PSFCHs. If the X PSFCHs include PSFCHs carrying HARQ information and PSFCHs carrying conflict information, then PSFCH#A may be The PSFCH with the highest priority value among the PSFCHs that carries conflicting information.
  • PSFCH#A may be selected by the first terminal device from among X PSFCHs during implementation.
  • PSFCH#A may be the PSFCH corresponding to the sidelink data with the smallest number of retransmissions among the X sidelink data.
  • X PSFCHs include PSFCH#1 to PSFCH#5, and PSFCH#1 has the lowest priority. If one transmission of a PSFCH occupies 1 PRB, then the X PSFCHs are as follows: the transmission of PSFCH#1 occupies all 11 PRBs of interleaved resource block #1. The transmission of PSFCH#2 occupies the first PRB of interleaved resource block #2. The transmission of PSFCH#3 occupies the first PRB of interleaved resource block #3. The transmission of PSFCH#4 occupies the first PRB of interleaved resource block #4. The transmission of PSFCH#4 occupies the second PRB of interleaved resource block #5. As shown in Figure 8.
  • the Y PSFCHs include X PSFCHs corresponding to X sideline data and a preconfigured (or predefined) PSFCH.
  • Y X+1.
  • the preconfigured (or predefined) PSFCH is a randomly generated PSFCH. That is, there is no limitation on the information carried in the PSFCH.
  • the information carried in the PSFCH can be any CS value corresponding to the PSFCH sequence.
  • the PSFCH is a PSFCH sequence with a CS value of 0.
  • the PSFCH sent on the first PRB set can be generated at any time.
  • the preconfigured (or predefined) PSFCH may include one or more randomly generated PSFCHs.
  • the PSFCH sent on the first PRB set can be generated at any time, and the PSFCHs transmitted on any two PRBs in the first PRB set can be the same or different, and no specific limitation is made here.
  • PSFCH#A may be the preconfigured (or predefined) PSFCH mentioned above.
  • the Y PSFCHs are as follows: the transmission of the preconfigured PSFC1 occupies all 11 PRBs of interleaved resource block #1.
  • the transmission of PSFCH#1 occupies the first PRB of interleaved resource block #2.
  • the transmission of PSFCH#2 occupies the first PRB of interleaved resource block #3.
  • the transmission of PSFCH#3 occupies the first PRB of interleaved resource block #4.
  • the transmission of PSFCH#4 occupies the first PRB of interleaved resource block #5.
  • the transmission of PSFCH#5 occupies the second PRB of interleaved resource block #2.
  • the specific method for determining the transmit power of each PSFCH in the above Y PSFCHs can refer to the relevant descriptions in the above methods 1 to 3, which will not be repeated here.
  • the priority of the preconfigured (or predefined) PSFCH can be the highest priority.
  • the priority of the preconfigured (or predefined) PSFCH is preconfigured or configured by the network device.
  • the value range of the priority can be a positive integer from 1 to 8.
  • the transmit power of PSFCH#A on any PRB in the first PRB set is obtained by equally dividing the transmit power of PSFCH#A according to the total number of PRBs included in the first PRB set (that is, the total number of public PRBs N). If one transmission of a PSFCH occupies one PRB, this method can also be described as: the transmit power of each transmission of PSFCH#A is obtained by equally dividing the total transmit power of PSFCH#A according to the number of transmissions of PSFCH#A (that is, N).
  • the transmit power of PSFCH#A on any occupied PRB is
  • the transmit power of PSFCH#B on any PRB in the second PRB set is obtained by equally dividing the transmit power of PSFCH#B according to the total number of PRBs m included in the second PRB set.
  • the SL communication of the first terminal device can meet the OCB requirements.
  • sending the lowest priority PSFCH or pre-configured PSFCH on the public PRB can ensure the signal quality of the high priority PSFCH, thereby improving the transmission performance. Therefore, the above method can improve the performance of PSFCH transmission while meeting the OCB requirements.
  • the transmission of one PSFCH occupies N public PRBs, while the transmission of other PSFCHs only occupies dedicated PRBs, which can reduce the number of PSFCHs transmitted on public PRBs, thereby improving the transmission power of effective signals (i.e., PSFCHs carried on dedicated PRBs), and further improving the signal quality of effective signals (i.e., PSFCHs transmitted on dedicated PRBs), thereby improving transmission performance. Therefore, the above method can further improve the performance of PSFCH transmission while meeting the OCB requirements.
  • the present application also provides another sideline communication method.
  • the method includes: the first terminal device successfully accesses the channel at the first start symbol in the first time slot or before the first start symbol; the first terminal device starts to transmit sideline data at the first start symbol, and the sideline data is carried on the PSSCH; wherein the first time slot includes the first start symbol and the second start symbol, and the second start symbol is the symbol after the first start symbol; the first start symbol and the second start symbol are automatic gain control (automatic gain control, AGC) symbols.
  • AGC automatic gain control
  • the first start symbol is a copy of the next symbol of the first start symbol
  • the second start symbol is a copy of the first symbol of the second start symbol.
  • the second terminal device receives the PSSCH and the corresponding PSCCH after the first start symbol.
  • the second terminal device performs AGC at the second starting position.
  • the symbols used by the PSSCH during rate matching do not include the first start symbol and the second start symbol.
  • the second starting symbol can be understood as a candidate starting symbol for transmitting PSCCH/PSSCH.
  • the candidate starting symbol is an AGC symbol, so it is not used to transmit a truly valid PSCCH/PSSCH.
  • the second starting symbol can be a copy of the next symbol, or a copy of one of the symbols occupied by other PSCCH/PSSCH transmissions.
  • the above-mentioned first start symbol can be understood as a candidate start symbol for transmitting PSCCH/PSSCH.
  • the PSSCH and the corresponding PSCCH are transmitted starting from the first start symbol.
  • the PSSCH and the corresponding PSCCH are transmitted starting from the second start symbol.
  • the first starting symbol may be the first symbol in the first time slot.
  • a time slot includes 14 symbols, which are respectively recorded as symbol 0, symbol 1, symbol 2, symbol 3, symbol 4, symbol 5, symbol 6, symbol 7, symbol 8, symbol 9, symbol 10, symbol 11, symbol 12, and symbol 13 in the order of time domain.
  • the first symbol in the first time slot is symbol 0.
  • the second starting symbol may be the sixth symbol in the first time slot. That is, the second starting symbol may be symbol 5.
  • the time domain resource length occupied by the transmission of the PSSCH and the corresponding PSCCH is 13, and the time domain length occupied by the PSCCH is 2:
  • the DMRS time domain position of 2 symbols includes symbol 3 and symbol 10;
  • the DMRS time domain position of 3 symbols includes symbol 1, symbol 6 and symbol 11;
  • the DMRS time domain positions of 4 symbols include symbol 1, symbol 4, symbol 7, and symbol 10;
  • the DMRS time domain position of 2 symbols includes symbol 4 and symbol 10;
  • the DMRS time domain position of 3 symbols includes symbol 1, symbol 6 and symbol 11;
  • the DMRS time domain positions of 4 symbols include symbol 1, symbol 4, symbol 7, and symbol 10;
  • the second starting symbol is symbol 5
  • it will not affect the DMRS symbol in any configuration. It can be ensured that the DMRS is not affected by the second starting symbol, thereby ensuring the demodulation performance.
  • the second starting symbol is the first symbol in the first time slot and the first symbol after the first symbol that does not include a PSSCH demodulation reference signal (DMRS).
  • the first symbol is the next symbol of the symbol occupied by the PSCCH in the first time slot or the fifth symbol.
  • the PSCCH occupied symbols are symbol 1 and symbol 2
  • the first symbol is symbol 3.
  • the PSCCH occupied symbols are symbol 1, symbol 2 and symbol 3, the first symbol is symbol 4.
  • the second starting symbol affects neither the PSCCH symbol nor the DMRS symbol.
  • the resource pool corresponding to the first terminal device includes a resource block set, and the resource pool is a resource set used for the first terminal device to perform sideline communication.
  • the first terminal device may also send reference signal indication information, the reference signal indication information indicating the time domain position of the DMRS symbol of the PSSCH, and the time domain position of the DMRS symbol does not include the position of the second starting symbol. For example, if the second starting symbol is symbol 4, then when the first terminal device sends the reference signal indication information, the time domain position of the DMRS symbol indicated by the reference signal indication information does not include the position of symbol 4. For example, when the time domain resource length occupied by the transmission of the PSSCH and the corresponding PSCCH is 13, and the time domain length occupied by the PSCCH is 3:
  • the DMRS time domain position of 2 symbols includes symbol 4 and symbol 10;
  • the DMRS time domain position of 3 symbols includes symbol 1, symbol 6 and symbol 11;
  • the DMRS time domain positions of 4 symbols include symbol 1, symbol 4, symbol 7, and symbol 10;
  • the first terminal device can indicate the DMRS time domain position of symbol 3. In this way, the second AGC symbol will not affect the demodulation performance brought by DMRS.
  • the first terminal device receives first enabling information, and the first enabling information is used to determine whether the resource pool supports one start symbol (first start symbol) in a time slot, or two start symbols (first start symbol and second start symbol) in a time slot.
  • the first enabling information comes from a network device, or the first enabling information is preconfigured.
  • the position of the second start symbol in the first time slot is configured or preconfigured by a network device.
  • the position of the second start symbol is from a candidate position set, and the candidate position set includes one or more elements in the following set: ⁇ 4, 5, 6, 7 ⁇ .
  • the candidate position set is configured or preconfigured or predefined by a network device.
  • the present application embodiment provides a side communication device, the structure of which may be as shown in FIG10, including a communication module 1001 and a processing module 1002.
  • the processing module 1002 is used to process the communication process.
  • the communication module 1001 is used to send and receive signals.
  • the communication module 1001 may include a sending module and a receiving module.
  • the sending module is used to send wireless signals
  • the receiving module is used to receive wireless signals.
  • the communication device can be specifically used to implement the method executed by the first terminal device in the embodiment described in FIG. 2.
  • the device can be the first terminal device itself, or a chip or a chipset in the first terminal device or a part of the chip used to execute the function of the related method.
  • the communication module 1001 is used to communicate with other terminal devices.
  • the processing module 1002 is used to receive X side data through the communication module 1001, where X is an integer greater than or equal to 1; and, send X PSFCHs corresponding to the X side data through the communication module 1001; wherein the transmission of the first PSFCH among the X PSFCHs occupies the first PRB set and the second PRB set corresponding to the first PSFCH; the first PRB set includes N PRBs, where N PRBs are common PRBs, and the second PRB set includes m PRBs, where N is an integer greater than 1, and m is an integer greater than or equal to 1; the transmission power of the first PSFCH on any PRB in the first PRB set is less than or equal to the transmission power on any PRB in the second PRB set.
  • the transmission power of the first PSFCH on any PRB in the first PRB set and the second PRB set is obtained by equally dividing the transmission power of the first PSFCH according to the total number of PRBs included in the first PRB set and the second PRB set.
  • the total transmit power of the first PSFCH on the first PRB set and the total transmit power on the second PRB set are determined according to the transmit power of the first PSFCH and the adjustment factor.
  • the total transmit power of the first PSFCH on the first PRB set is Satisfies the following formula:
  • P1 is the transmission power of the first PSFCH
  • ⁇ 1 is the adjustment factor
  • ⁇ 1 is greater than 0 and less than 1.
  • the total transmit power of the first PSFCH on the first PRB set is Satisfies the following formula:
  • P1 is the transmission power of the first PSFCH
  • ⁇ 1 is the adjustment factor
  • the total transmit power of the first PSFCH on the first PRB set is Satisfies the following formula:
  • P1 is the transmission power of the first PSFCH
  • ⁇ 2 is the adjustment factor
  • the first PRB set includes all or part of the PRBs in an interleaved resource block.
  • a second PSFCH among the X PSFCHs occupies the first PRB set and a second PRB set corresponding to the second PSFCH.
  • the transmit power of the first PSFCH is obtained by equally dividing the maximum transmit power of the first terminal device according to the value of X;
  • the transmission power of the first PSFCH is determined based on at least one of the priority of at least one PSFCH to be transmitted, the maximum number of PSFCHs to be transmitted, and the maximum transmission power of the first terminal device, wherein at least one PSFCH includes X PSFCHs.
  • transmission of a second PSFCH among the X PSFCHs occupies a second PRB set corresponding to the second PSFCH.
  • the transmit power of the first PSFCH is determined based on the maximum transmit power of the first terminal device, the total number of PRBs occupied by X PSFCHs, and the number of PRBs occupied by the first PSFCH.
  • the transmit power P1 of the first PSFCH satisfies the following formula:
  • P is the maximum transmission power of the first terminal device.
  • the first PSFCH is the PSFCH with the lowest priority among the X PSFCHs.
  • the communication device can be specifically used to implement the method executed by the first terminal device in the embodiment described in FIG. 7 , and the device can be the first terminal device itself, or a chip or a chipset in the first terminal device or a part of the chip used to execute the function of the related method.
  • the communication module 1001 is used to communicate with other terminal devices.
  • the processing module 1002 is configured to receive X sideline data through the communication module 1001, where X is an integer greater than or equal to 1; and send Y PSFCHs through the communication module 1001, where Y is an integer greater than or equal to X; wherein the first PSFCH in the Y PSFCHs
  • the transmission occupies the first physical resource block PRB set, and the transmission of the second PSFCH in Y PSFCHs occupies the second PRB set corresponding to the second PSFCH;
  • the first PRB set includes N PRBs, and N PRBs are common PRBs;
  • the second PRB set includes m PRBs; N is an integer greater than 1, and m is an integer greater than or equal to 1.
  • the Y PSFCHs are X PSFCHs corresponding to X sidelink data
  • the first PSFCH is a PSFCH with the lowest priority among the X PSFCHs.
  • the Y PSFCHs include X PSFCHs corresponding to X sidelink data and one preconfigured or predefined PSFCH, and the first PSFCH is a preconfigured or predefined PSFCH.
  • the transmit power of the first PSFCH on any PRB in the first PRB set is obtained by equally dividing the transmit power of the first PSFCH according to the total number of PRBs included in the first PRB set.
  • the transmit power of the second PSFCH on any PRB in the second PRB set is obtained by equally dividing the transmit power of the second PSFCH according to the total number of PRBs included in the second PRB set.
  • the first PRB set includes all or part of the PRBs in one or more staggered resource blocks.
  • the transmission power of the first PSFCH is obtained by equally dividing the maximum transmission power of the first terminal device according to the value of X; or, the transmission power of the first PSFCH is determined based on at least one of the priority of at least one PSFCH to be sent, the maximum number of PSFCHs to be sent, and the maximum transmission power of the first terminal device, wherein at least one PSFCH includes X PSFCHs.
  • each functional module in each embodiment of the present application may be integrated into a processor, or may exist physically separately, or two or more modules may be integrated into one module.
  • the above-mentioned integrated modules may be implemented in the form of hardware or in the form of software functional modules. It is understood that the functions or implementations of each module in the embodiments of the present application may further refer to the relevant description of the method embodiment.
  • the communication device may be as shown in FIG11, and the device may be a communication device or a chip in the communication device, wherein the communication device may be the first terminal device in the above embodiment or the second terminal device in the above embodiment.
  • the device includes a processor 1101 and a communication interface 1102, and may also include a memory 1103.
  • the processing module 1002 may be the processor 1101.
  • the communication module 1001 may be the communication interface 1102.
  • the processor 1101 may be a CPU, or a digital processing unit, etc.
  • the communication interface 1102 may be a transceiver, or an interface circuit such as a transceiver circuit, or a transceiver chip, etc.
  • the device further includes: a memory 1103 for storing programs executed by the processor 1101.
  • the memory 1103 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), such as a random-access memory (RAM).
  • the memory 1103 is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.
  • the processor 1101 is used to execute the program code stored in the memory 1103, specifically to execute the actions of the processing module 1002, which will not be described in detail in this application.
  • the communication interface 1102 is specifically used to execute the actions of the communication module 1001, which will not be described in detail in this application.
  • the communication device may further include a bus 1104 connection, wherein the bus 1104 connection is used to connect the communication interface 1102 , the processor 1101 and the memory 1103 .
  • connection medium between the communication interface 1102, the processor 1101 and the memory 1103 is not limited in the embodiment of the present application.
  • the memory 1103, the processor 1101 and the communication interface 1102 are connected through a bus 1104.
  • the bus is represented by a bold line in FIG11.
  • the connection mode between other components is only for schematic illustration and is not limited.
  • the bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one bold line is used in FIG11, but it does not mean that there is only one bus or one type of bus.
  • An embodiment of the present invention further provides a computer-readable storage medium for storing computer software instructions required to be executed by the above-mentioned processor, which includes a program required to be executed by the above-mentioned processor.
  • An embodiment of the present application also provides a side communication system, including a communication device for implementing the function of the first terminal device in the embodiment described in Figure 2 and a communication device for implementing the functions of other terminal devices in the embodiment described in Figure 2.
  • An embodiment of the present application also provides a side communication system, including a communication device for implementing the function of the first terminal device in the embodiment described in Figure 7 and a communication device for implementing the functions of other terminal devices in the embodiment described in Figure 7.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of one or more computer-usable storage media (including but not limited to disk storage, In the form of a computer program product implemented on a CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.
  • These computer program instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

Landscapes

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

Abstract

本申请提供一种侧行通信方法及装置，用于提供通过多个PRB发送PSFCH的方案。该方法包括：第一终端设备接收X个侧行数据，并发送X个PSFCH；其中，X个PSFCH中第一PSFCH的传输占用第一PRB集合以及第一PSFCH对应的第二PRB集合；第一PRB集合包括N个公共PRB，第二PRB集合包括m个PRB；第一PSFCH在第一PRB集合中任一PRB上的发送功率小于或等于在第二PRB集合中任一PRB上的发送功率。通过在公共PRB上发送第一PSFCH，使得第一终端设备的SL通信可以满足OCB需求。通过限制第一PSFCH在公共PRB上的发送功率，可以提升专用PRB上的有效信号的信号质量。

Description

一种侧行通信方法及装置
相关申请的交叉引用
本申请要求在2022年11月04日提交中国专利局、申请号为202211380062.0、申请名称为“一种侧行通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种侧行通信方法及装置。
背景技术
用户设备(user equipment，UE)与UE之间的侧行链路(sidelink，SL)通信中，发送端UE可以通过物理层侧行链路共享信道(physical sidelink shared channel，PSSCH)传输数据，接收端UE在接收到数据后，可以通过物理层侧行链路反馈信道(physical sidelink feedback channel，PSFCH)反馈该数据对应的肯定应答(acknowledgement，ACK)或否定应答(negative acknowledgement，NACK)。ACK或NACK通常占用1比特，因此一个PSFCH可以占用一个物理资源块(physical resource block，PRB)即可传输ACK或NACK。
在基于非授权频谱的SL通信中，UE在进行抢占信道之后需要满足占用信道带宽(occupied channel bandwidth，OCB)要求，也就是通信时占用信道的带宽需要大于一定阈值。为了满足OCB要求，可以使一个PSFCH占用多个PRB。但是，当PSFCH占用多个PRB时，UE如何发送各个PSFCH，目前并没有具体实施方案。
发明内容
本申请提供一种侧行通信方法及装置，用于提供一种通过多个PRB发送PSFCH的实施方案。
第一方面，提供一种侧行通信方法，该方法的执行主体可以是终端设备或者位于终端设备中的芯片、芯片系统或者电路，该方法可以通过以下步骤实现：第一终端设备接收X个侧行数据，并发送X个侧行数据对应的X个PSFCH；其中，X个PSFCH中的第一PSFCH的传输占用第一PRB集合以及第一PSFCH对应的第二PRB集合；第一PRB集合包括N个PRB，N个PRB为公共PRB，第二PRB集合包括m个PRB，N为大于1的整数，m为大于或等于1的整数；第一PSFCH在第一PRB集合中任一PRB上的发送功率小于或等于在第二PRB集合中任一PRB上的发送功率，X为大于或等于1的整数。
本申请中通过在公共PRB上发送第一PSFCH，使得第一终端设备的SL通信可以满足OCB需求。并且，通过限制第一PSFCH在公共PRB上的发送功率，有利于保证有效信号(也就是专用PRB上传输的第一PSFCH)的信号质量，从而提升传输性能。通过专用PRB上的发送功率高一些，公共PRB上的发送功率低一些，可以增加对方成功接收的概率。因此通过上述方式可以在满足OCB需求的前提下提升PSFCH传输的性能。
一种可能的设计中，第一PSFCH在第一PRB集合和第二PRB集合中的任一PRB上的发送功率为将第一PSFCH的发送功率根据第一PRB集合和第二PRB集合包括的PRB总数进行等分得到。即公共PRB集合和专用PRB集合中各个PRB的发送功率相同。通过该方式可以降低实现复杂度。
一种可能的设计中，所述第一PSFCH在任一占用的PRB上的发送功率为所述第一PSFCH的发送功率的
一种可能的设计中，第一PSFCH在第一PRB集合上总的发送功率与在第二PRB集合上总的发送功率为根据第一PSFCH的发送功率和调整因子确定的。通过该方式可以提升传输的灵活性。
一种可能的设计中，第一PSFCH在第一PRB集合上总的发送功率满足如下公式：
第一PSFCH在第二PRB集合上总的发送功率满足如下公式：
其中，P1为第一PSFCH的发送功率，α1为调整因子，α1大于0且小于1。
一种可能的设计中，第一PSFCH在第一PRB集合上总的发送功率满足如下公式：
第一PSFCH在第二PRB集合上总的发送功率满足如下公式：
其中，P1为第一PSFCH的发送功率，β1为调整因子。
一种可能的设计中，第一PSFCH在第一PRB集合上总的发送功率满足如下公式：
第一PSFCH在第二PRB集合上总的发送功率满足如下公式：
其中，P1为第一PSFCH的发送功率，β2为调整因子。
一种可能的设计中，第一PRB集合包括一个交错资源块中的全部或部分PRB。
一种可能的设计中，X个PSFCH中的第二PSFCH占用第一PRB集合和第二PSFCH对应的第二PRB集合。上述设计中，X个PSFCH的发送方式相同，即每个PSFCH的传输均占用N个公共PRB以及一个专用PRB的方案，实现复杂度较低。
一种可能的设计中，第一PSFCH的发送功率为将第一终端设备的最大发送功率根据X的取值进行等分得到的；或者，第一PSFCH的发送功率为根据待发送的至少一个PSFCH的优先级、PSFCH的最大发送个数、第一终端设备的最大发送功率中的至少一个确定，其中，至少一个PSFCH包括X个PSFCH。
一种可能的设计中，所述X个PSFCH中的第二PSFCH的传输占用第二PSFCH对应的第二PRB集合。
上述实施方式中，可以减少公共PRB上传输的PSFCH的数量，从而可以提升有效信号(即专用PRB上承载的PSFCH)的发送功率，进而可以提升有效信号(也就是专用PRB上传输的PSFCH)的信号质量，提升传输性能。因此通过上述方式可以在满足OCB需求的前提下进一步提升PSFCH传输的性能。
一种可能的设计中，第一PSFCH的发送功率为根据第一终端设备的最大发送功率、X个PSFCH占用的PRB总数以及第一PSFCH占用的PRB数量确定的。
一种可能的设计中，第一PSFCH的发送功率P1满足如下公式：
其中，P总为第一终端设备的最大发送功率。
一种可能的设计中，第一PSFCH为X个PSFCH中优先级最低的PSFCH。
第二方面，提供一种侧行通信方法，该方法的执行主体可以是终端设备或者位于终端设备中的芯片、芯片系统或者电路，该方法可以通过以下步骤实现：第二终端设备确定第一PSFCH的传输占用的资源，所述第一PSFCH的传输占用的资源包括第一PRB集合以及第一PSFCH对应的第二PRB集合。第二终端设备在第一PSFCH对应的第二PRB集合上接收第一PSFCH。其中，第一PRB集合包括N个PRB，N个PRB为公共PRB，第二PRB集合包括m个PRB，N为大于1的整数，m为大于或等于1的整数。
本申请中通过在公共PRB上发送第一PSFCH，使得第一终端设备的SL通信可以满足OCB需求。并且，通过限制第一PSFCH在公共PRB上的发送功率，有利于保证有效信号(也就是专用PRB上传输的第一PSFCH)的信号质量，从而提升传输性能。通过专用PRB上的发送功率高一些，公共PRB上的发送功率低一些，可以增加对方成功接收的概率。因此通过上述方式可以在满足OCB需求的前提下提升PSFCH传输的性能。
一种可能的设计中，第二终端设备在第一PSFCH对应的第二PRB集合上接收第一PSFCH，包括：
第二终端设备在第一PSFCH对应的第二PRB集合上接收第一PSFCH，且不在第一PRB集合上接收第一PSFCH。
第三方面，提供一种侧行通信方法，该方法的执行主体可以是终端设备或者位于终端设备中的芯片、芯片系统或者电路，该方法可以通过以下步骤实现：第一终端设备接收X个侧行数据，并发送Y个PSFCH。其中，Y个PSFCH中第一PSFCH的传输占用第一PRB集合，Y个PSFCH中第二PSFCH的传输占用第二PSFCH对应的第二PRB集合；第一PRB集合包括N个PRB，N个PRB为公共PRB；第二PRB集合包括m个PRB；N为大于1的整数，m为大于或等于1的整数。X为大于或等于1的整 数；Y为大于或等于X的整数。
本申请中通过在公共PRB上发送PSFCH，使得第一终端设备的SL通信可以满足OCB需求。并且，一个PSFCH的传输占用N个公共PRB，而其他PSFCH的传输仅占用专用PRB，可以减少公共PRB上传输的PSFCH的数量，从而可以提升有效信号(即专用PRB上承载的PSFCH)的发送功率，进而可以提升有效信号(也就是专用PRB上传输的PSFCH)的信号质量，提升传输性能。因此通过上述方式可以在满足OCB需求的前提下进一步提升PSFCH传输的性能。
一种可能的设计中，Y个PSFCH为X个侧行数据对应的X个PSFCH，第一PSFCH为X个PSFCH中优先级最低的PSFCH。上述设计通过在公共PRB上发送优先级最低的PSFCH，可以保证优先级高的PSFCH的信号质量，从而提升传输性能。因此通过上述方式可以在满足OCB需求的前提下提升PSFCH传输的性能。
一种可能的设计中，Y＝X+1，Y个PSFCH包括X个侧行数据对应的X个PSFCH和一个预配置或预定义的PSFCH，第一PSFCH为预配置或预定义的PSFCH。上述设计通过在公共PRB上发送预配置的PSFCH，可以保证承载有效信息的PSFCH的信号质量，从而提升传输性能。因此通过上述方式可以在满足OCB需求的前提下提升PSFCH传输的性能。
一种可能的设计中，第一PSFCH在第一PRB集合中的任一PRB上的发送功率为将第一PSFCH的发送功率根据第一PRB集合包括的PRB总数进行等分得到。通过该设计可以降低实现复杂度。
一种可能的设计中，第二PSFCH在第二PRB集合中的任一PRB上的发送功率为将第二PSFCH的发送功率根据第二PRB集合包括的PRB总数进行等分得到。通过该设计可以降低实现复杂度。
一种可能的设计中，第一PRB集合包括一个或多个交错资源块中的全部或部分PRB。
一种可能的设计中，第一PSFCH的发送功率为将第一终端设备的最大发送功率根据X的取值进行等分得到的；或者，第一PSFCH的发送功率为根据待发送的至少一个PSFCH的优先级、PSFCH的最大发送个数、第一终端设备的最大发送功率中的至少一个确定，其中，至少一个PSFCH包括X个PSFCH。
第四方面，提供一种侧行通信方法，该方法的执行主体可以是终端设备或者位于终端设备中的芯片、芯片系统或者电路，该方法可以通过以下步骤实现：第二终端设备确定第一PSFCH的传输占用的资源，所述第一PSFCH的传输占用的资源为第一PRB集合。第二终端设备在第一PRB集合上接收第一PSFCH。第一PRB集合包括N个PRB，N个PRB为公共PRB；N为大于1的整数。
本申请中通过在公共PRB上发送PSFCH，使得第一终端设备的SL通信可以满足OCB需求。并且，一个PSFCH的传输占用N个公共PRB，而其他PSFCH的传输仅占用专用PRB，可以减少公共PRB上传输的PSFCH的数量，从而可以提升有效信号(即专用PRB上承载的PSFCH)的发送功率，进而可以提升有效信号(也就是专用PRB上传输的PSFCH)的信号质量，提升传输性能。因此通过上述方式可以在满足OCB需求的前提下进一步提升PSFCH传输的性能。
第五方面，提供一种侧行通信方法，该方法的执行主体可以是终端设备或者位于终端设备中的芯片、芯片系统或者电路，该方法可以通过以下步骤实现：第一终端设备在第一时隙中的第一起始符号或所述第一起始符号前成功接入信道；所述第一终端设备在所述第一起始符号开始传输侧行数据，所述侧行数据承载于PSSCH；其中，所述第一时隙包括所述第一起始符号和第二起始符号，所述第二起始符号为所述第一起始符号之后的符号；所述第一起始符号和所述第二起始符号为自动增益控制(automatic gain control，AGC)符号。所述第一起始符号为所述第一起始符号的下一个符号的复制，所述第二起始符号为所述第二起始符号的第一个符号的复制。
一种可能的设计中，所述第一起始符号为所述第一时隙中的第一个符号。
一种可能的设计中，所述第二起始符号为所述第一时隙中的第六个符号。
在一个时隙中用于传输PSCCH和相应PSSCH占用的符号个数为13时，PSSCH DMRS时域位置不包括第六个符号，因此该符号用作AGC不会影响时隙中包括的DMRS符号，因此可以保证接收终端设备的解调性能。
一种可能的设计中，所述第二起始符号为第一时隙中第一符号以及所述第一符号之后第一个不包括PSSCH解调参考信号(demodulation reference signal，DMRS)的符号。其中，所述第一符号为所述第一时隙中PSCCH占用的符号的下一个符号或者为第五个符号。
一种可能的设计中，所述第一终端设备对应的资源池包括一个资源块集合，所述资源池为用于第一终端设备进行侧行通信的资源集合。
一种可能的设计中，所述方法还包括：所述第一终端设备发送参考信号指示信息，所述参考信号指示信息指示所述PSSCH的DMRS符号的时域位置，所述DMRS符号的时域位置不包括第二起始符号的位置。
第六方面，本申请实施例提供一种侧行通信装置，可以实现上述第一方面或其任一可能的设计、或第三方面或其任一可能的设计中、或第五方面或其任一可能的设计中由第一终端设备实现的方法。该装置包括用于执行上述方法的相应的单元或部件。该装置包括的单元可以通过软件和/或硬件方式实现。该装置例如可以为第一终端设备、或者为可支持第一终端设备中实现上述方法的部件或基带芯片、芯片系统、或处理器等。
示例性的，该通信装置包括处理器，该处理器被配置为支持该通信装置执行以上所示方法中终端设备的相应功能。该通信装置还可以包括存储器，该存储可以与处理器耦合，其保存该通信装置必要的程序指令和数据。可选地，该通信装置还包括接口电路，该接口电路用于支持该通信装置与其他终端设备之间的通信。
示例性的，该通信装置可包括收发单元(或称通信模块、收发模块)和处理单元(或称处理模块)等等模块化组件，这些模块可以执行上述第一方面或其任一可能的设计、或第三方面或其任一可能的设计中、或第五方面或其任一可能的设计中第一终端设备的相应功能。当通信装置是第一终端设备时，收发单元可以是发送器和接收器，或发送器和接收器整合获得的收发器。收发单元可以包括天线和射频电路等，处理单元可以是处理器，例如基带芯片等。当通信装置是具有上述第一终端设备功能的部件时，收发单元可以是射频单元，处理单元可以是处理器。当通信装置是芯片系统时，收发单元可以是芯片系统的输入输出接口、处理单元可以是芯片系统的处理器，例如：中央处理单元(central processing unit，CPU)。
收发单元可用于执行第一方面或其任一可能的设计、或第三方面或其任一可能的设计中、或第五方面或其任一可能的设计中由第一终端设备执行的接收和/或发送的动作。处理单元可用于执行第一方面或其任一可能的设计、或第三方面或其任一可能的设计中、或第五方面或其任一可能的设计中由第一终端设备执行的接收和发送以外的动作。
第七方面，本申请实施例提供一种侧行通信装置，可以实现上述第二方面或其任一可能的设计、或第四方面或其任一可能的设计中由第二终端设备实现的方法。该装置包括用于执行上述方法的相应的单元或部件。该装置包括的单元可以通过软件和/或硬件方式实现。该装置例如可以为第二终端设备、或者为可支持第二终端设备中实现上述方法的部件或基带芯片、芯片系统、或处理器等。
示例性的，该通信装置包括处理器，该处理器被配置为支持该通信装置执行以上所示方法中终端设备的相应功能。该通信装置还可以包括存储器，该存储可以与处理器耦合，其保存该通信装置必要的程序指令和数据。可选地，该通信装置还包括接口电路，该接口电路用于支持该通信装置与其他终端设备之间的通信。
示例性的，该通信装置可包括收发单元(或称通信模块、收发模块)和处理单元(或称处理模块)等等模块化组件，这些模块可以执行上述第二方面或其任一可能的设计、或第四方面或其任一可能的设计中第二终端设备的相应功能。当通信装置是第二终端设备时，收发单元可以是发送器和接收器，或发送器和接收器整合获得的收发器。收发单元可以包括天线和射频电路等，处理单元可以是处理器，例如基带芯片等。当通信装置是具有上述第二终端设备功能的部件时，收发单元可以是射频单元，处理单元可以是处理器。当通信装置是芯片系统时，收发单元可以是芯片系统的输入输出接口、处理单元可以是芯片系统的处理器，例如：中央处理单元(central processing unit，CPU)。
收发单元可用于执行第二方面或其任一可能的设计、或第四方面或其任一可能的设计中由第二终端设备执行的接收和/或发送的动作。处理单元可用于执行第二方面或其任一可能的设计、或第四方面或其任一可能的设计中由第一终端设备执行的接收和发送以外的动作。
第八方面，提供一种侧行通信系统，该通信系统包括第六方面所述的装置以及第七方面所述的装置。
第九方面，提供一种计算机可读存储介质，该计算机可读存储介质用于存储计算机指令，当该计算机指令在计算机上运行时，使得该计算机执行上述第一方面至第五方面中任一方面或其任意一种可能的实施方式中所示的方法。
第十方面，提供一种包含指令的计算机程序产品，该计算机程序产品用于存储计算机指令，当该计算机指令在计算机上运行时，使得该计算机执行上述第一方面至第五方面中任一方面或其任意一种可 能的实施方式中所示的方法。
第十一方面，提供一种电路，该电路与存储器耦合，该电路被用于执行上述第一方面至第五方面中任一方面或其任意一种可能的实施方式中所示的方法。该电路可包括芯片电路。
附图说明
图1为本申请实施例的一种V2X系统的架构示意图；
图2为本申请实施例的一种侧行通信方法的流程示意图；
图3A为本申请实施例的一种公共PRB的示意图；
图3B为本申请实施例的一种公共资源的示意图；
图3C为本申请实施例的一种公共资源的示意图；
图4为本申请实施例的一种公共PRB的示意图；
图5为本申请实施例的一种发送X个PSFCH的示意图；
图6为本申请实施例的一种发送X个PSFCH的示意图；
图7为本申请实施例的一种侧行通信方法的示意图；
图8为本申请实施例的一种发送X个PSFCH的示意图；
图9为本申请实施例的一种发送X个PSFCH的示意图；
图10为本申请实施例的一种侧行通信装置的结构示意图；
图11为本申请实施例的一种侧行通信装置的结构示意图。
具体实施方式
为了使本申请实施例的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施例作进一步地详细描述。
以下，对本申请实施例中的部分用语进行解释说明，以便于本领域技术人员理解。
1)终端设备，包括向用户提供语音和/或数据连通性的设备，具体的，包括向用户提供语音的设备，或包括向用户提供数据连通性的设备，或包括向用户提供语音和数据连通性的设备。例如可以包括具有无线连接功能的手持式设备、或连接到无线调制解调器的处理设备。该终端设备可以经无线接入网(radio access network，RAN)与核心网进行通信，与RAN交换语音或数据，或与RAN交互语音和数据。该终端设备可以包括用户设备、无线终端设备、移动终端设备、设备到设备通信(device-to-device，D2D)终端设备、车到一切(vehicle to everything，V2X)终端设备、机器到机器/机器类通信(machine-to-machine/machine-type communications，M2M/MTC)终端设备、物联网(internet of things，IoT)终端设备、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、远程站(remote station)、接入点(access point，AP)、远程终端(remote terminal)、接入终端(access terminal)、用户终端(user terminal)、用户代理(user agent)、或用户装备(user device)等。例如，可以包括移动电话(或称为“蜂窝”电话)，具有移动终端设备的计算机，便携式、袖珍式、手持式、计算机内置的移动装置等。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(session initiation protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、等设备。还包括受限设备，例如功耗较低的设备，或存储能力有限的设备，或计算能力有限的设备等。例如包括条码、射频识别(radio frequency identification，RFID)、传感器、全球定位系统(global positioning system，GPS)、激光扫描器等信息传感设备。
V2X技术中的终端设备可以为路侧单元(road side unit，RSU)，RSU可以是支持V2X应用的固定基础设施实体，可以与支持V2X应用的其他实体交换消息，例如该路侧单元可以通过PC5口与支持V2X应用的其他实体交换消息。
V2X技术中的终端设备还可以为整车、整车中的通信模块(例如通信芯片、芯片系统等)等等。
例如，所述终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、可穿戴设备、工业控制中的无线终端、无人驾驶中的无线终端、IoT网络中智能音箱、远程医疗中的无线终端设备、智能电网中的无线终端设备、运输安全中的无线终端设备、智慧城市中的无线终端设备，或智慧家庭中的无线终端设备等等，本申请实施例对此并不限定。可穿戴设备也可以称为穿戴式智能设备或智能穿戴式设备等，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如 眼镜、手套、手表、服饰及鞋等。示例性地，可穿戴设备可以是虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能头盔、智能首饰等。
终端设备还可以是整车、整车中的无线通信模块、车载T-box(Telematics BOX)、路侧单元RSU。
终端设备还可以是V2X设备，例如，智能汽车(smart car或intelligent car)、数字汽车(digital car)、无人汽车(unmanned car或driverless car或pilotless car或automobile)、自动汽车(self-driving car或autonomous car)、纯电动汽车(pure EV或Battery EV)、混合动力汽车(hybrid electric vehicle，HEV)、增程式电动汽车(range extended EV，REEV)、插电式混合动力汽车(plug-in HEV，PHEV)、新能源汽车(new energy vehicle)、路边装置(road site unit，RSU)。终端设备也可以是设备到设备(device to device，D2D)通信中的设备，例如，电表、水表等。
此外，在本申请实施例中，终端设备还可以是IoT系统中的终端设备，IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。
而如上介绍的各种终端设备，如果位于车辆上(例如放置在车辆内或安装在车辆内)，都可以认为是车载终端设备，车载终端设备例如也称为车载单元(on-board unit，OBU)。本申请的终端设备还可以是作为一个或多个部件或者单元而内置于车辆的车载模块、车载模组、车载部件、车载芯片或者车载单元，车辆通过内置的所述车载模块、车载模组、车载部件、车载芯片或者车载单元可以实施本申请的方法。
本申请实施例中，终端设备还可以包括中继(relay)。或者理解为，能够与基站进行数据通信的都可以看作终端设备。
本申请实施例中，用于实现终端设备的功能的装置可以是终端设备，也可以是应用于终端设备中能够支持终端设备实现该功能的装置，例如具备通信功能的部件或组件，或者芯片系统，该装置可以被安装在终端设备中。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。本申请实施例提供的技术方案中，以用于实现终端的功能的装置是终端设备为例，描述本申请实施例提供的技术方案。
2)网络设备，例如包括接入网(access network，AN)设备，例如基站(例如，接入点)，可以是指接入网中在空口通过一个或多个小区与无线终端设备通信的设备，或者例如，一种V2X技术中的网络设备为基站型RSU。基站可用于将收到的空中帧与互联网协议(internet protocol，IP)分组进行相互转换，作为终端设备与接入网的其余部分之间的路由器，其中接入网的其余部分可包括IP网络。基站型RSU可以是支持V2X应用的固定基础设施实体，可以与支持V2X应用的其他实体交换消息，例如该基站型路侧单元可以通过Uu口与支持V2X应用的其他实体交换消息。网络设备还可协调对空口的属性管理。例如，网络设备可以包括LTE系统或高级长期演进(long term evolution-advanced，LTE-A)中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，或者也可以包括第五代移动通信技术(the 5th generation，5G)NR系统(也简称为NR系统)中的下一代节点B(next generation node B，gNB)或者也可以包括云接入网(cloud radio access network，Cloud RAN)系统中的集中式单元(centralized unit，CU)和分布式单元(distributed unit，DU)，本申请实施例并不限定。例如网络设备可以为Cloud RAN系统中的CU，或为DU，或为CU和DU的整体。
网络设备还可以包括核心网设备，核心网设备例如包括访问和移动管理功能(access and mobility management function，AMF)等。本申请实施例由于主要涉及接入网，因此在后文中如无特殊说明，则所述的网络设备均是指接入网设备。
本申请实施例中，用于实现网络设备的功能的装置可以是网络设备，也可以是能够支持网络设备实现该功能的装置，例如芯片系统，该装置可以被安装在网络设备中。在本申请实施例提供的技术方案中，以用于实现网络设备的功能的装置是网络设备为例，描述本申请实施例提供的技术方案。
3)交错资源块(interlace)可以包括多个等间隔的资源块(resource block，RB)，或者说，由多个等间隔的资源块组成。NR中定义了多个资源块的交错，以交错值为m，交错资源块的数量为M为例， 一个资源块组(或称为一组交错资源块)可以包括索引为{m、M+m、2M+m、3M+m、...}的资源块，其中，m∈{0,1,...,M-1}。M为大于0的整数。可选的，不同交错资源块包括的PRB的个数相差最多1个PRB，即任意两个交错资源块中包括的PRB个数相差0个PRB或者1个PRB。对于M个交错资源块中的前mod(H，M)个)交错资源块，对于剩下的交错资源块，其中，H为所有PRB的数量。
4)授权频段和非授权频段：授权频段通常只能让某一些机构或运营商使用，而非授权频段为共享频段，不同的运营商/机构都可以使用。授权频段可以称为授权频谱、授权频谱资源等，非授权频段可以称为非授权频谱、非授权频谱资源等。
5)信道占用时间(channel occupancy time，COT)：发送端在先听后说(listen before talk，LBT)成功之后，对信道并非永久占用，而是会确定一个占用时长，该占用时长可以称作COT。在COT内，设备在传输信号时需要满足占用信道带宽(occupied channel bandwidth，OCB)要求，也就是通信时占用信道的带宽需要大于一定阈值。
6)侧行链路(sidelink)通信：sidelink通信是指两个对等的用户节点之间直接进行通信的一种侧行通信方式，例如，终端和终端之间可以进行sidelink通信。
在sidelink通信中，发送端可以通过sidelink物理共享信道(physical sidelink shared channel，PSSCH)向接收端发送数据。接收端在接收到数据之后，可以向发送端反馈该数据的混合自动重传请求(hybrid automatic repeat request，HARQ)信息。目前，sidelink通信中定义了HARQ反馈专用信道即sidelink物理反馈信道(physical sidelink feedback channel，PSFCH)。
7)公共PRB：用于多个终端设备进行传输。公共PRB是每个终端设备公共使用的PRB，又可以理解为共同使用的PRB。可选的，又可以理解为公共使用的频域码域资源。需要说明的是，公共PRB支持多个终端设备进行传输，但是在一个时刻，公共PRB上可能存在一个终端设备的传输，也可能存在多个终端设备的传输。通过在公共PRB上进行传输，可以满足OCB需求。
8)专用PRB：用于一个终端设备进行传输。对于一个专用PRB，一个时刻只能有一个终端设备进行传输。可选的，一个PSFCH时机(PSFCH occasion)包括的所有PRB中去除公共PRB之后的PRB可以作为专用PRB。可选的，一个PSFCH时机包括的所有PSFCH资源中除去公共资源之后的资源可以作为专用PSFCH资源。
本申请实施例中“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，可以表示：a，b，c，a和b，a和c，b和c，或a和b和c，其中a,b,c可以是单个，也可以是多个。
以及，除非有相反的说明，本申请实施例提及“第一”、“第二”等序数词是用于对多个对象进行区分，不用于限定多个对象的大小、内容、顺序、时序、优先级或者重要程度等。例如，第一物理资源块(physical resource block，PRB)集合和第二PRB集合，只是为了区分不同的PRB集合，而并不是表示这两个PRB集合的优先级、PRB数量或者重要程度等的不同。
需要说明的是，本申请中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其他实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
本申请实施例如下描述中所提到的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括其他没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
前文介绍了本申请实施例所涉及的部分用语，下面介绍本申请所提供的方法应用的网络系统的架构。
本申请提供的通信方法可以应用于5G新无线(new radio，NR)非授权(Unlicensed)系统，或者，也可以应用于其他通信系统中，例如，可以是物联网(internet of things，IoT)系统、车联网(vehicle-to-everything,V2X)系统，窄带物联网(narrow band internet of things，NB-IoT)系统、长期演进(long term evolution，LTE)系统，也可以是第五代(5G)通信系统，还可以是LTE与5G混合架 构、也可以是5G新无线(new radio，NR)系统，以及未来通信发展中出现的新的通信系统等。
示例性的，以V2X系统为例，本申请实施例可以应用于如图1所示的架构中。V2X系统可以包括车与车(vehicle-to-vehicle，V2V)、车与路侧基础设施(vehicle-to-infrastructure，V2I)、车与行人(vehicle-to-pedestrian，V2P)的直接通信，以及车与网络(vehicle-to-network，V2N)的通信交互等几种应用需求。V2V指的是车辆间的通信；V2P指的是车辆与人(包括行人、骑自行车的人、司机、或乘客)的通信；V2I指的是车辆与网络设备的通信，网络设备例如RSU，另外还有一种V2N可以包括在V2I中，V2N指的是车辆与基站/网络的通信。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题同样适用。
下面介绍本申请实施例涉及的技术特征。
SL通信中，发送侧终端设备可以通过PSSCH传输数据，接收侧终端设备在接收到数据后，可以通过PSFCH反馈该数据对应的HARQ信息。HARQ信息通常占用1比特，因此一个PSFCH可以占用一个物理资源块(physical resource block，PRB)即可传HARQ信息。在基于非授权频谱的SL通信中，UE在进行抢占信道之后需要满足OCB要求，也就是通信时占用信道的带宽需要大于一定阈值。为了满足OCB要求，可以使一个PSFCH占用多个PRB。当一个PSFCH占用1个PRB时，终端设备发送多个PSFCH时，根据PSFCH的数量将终端设备的最大发送功率进行功率等分为该多个PSFCH分配发送功率。或者终端设备根据基于下行路损确定的发送功率，最大发送功率，发送的PSFCH的数量，能够发送的PSFCH的数量的上限，确定发送PSFCH的数量和功率。但是，当PSFCH占用多个PRB时，UE如何发送各个PSFCH，目前并没有具体实施方案。
基于此，本申请实施例提供一种侧行通信方法及装置，用于提供一种通过多个PRB发送PSFCH的实施方案。其中，方法和装置是基于同一发明构思的，由于方法及装置解决问题的原理相似，因此装置与方法的实施可以相互参见，重复之处不再赘述。
对于一个终端设备而言，可能接收其他终端设备发送的侧行数据，下面将发送数据的终端设备称为发送侧终端设备，接收数据的终端设备称为接收侧终端设备。需要理解的是，发送侧终端设备和接收侧终端设备是相对而言的，发送侧终端设备也可以具有接收功能，接收侧终端设备也可以具有发送功能。
本申请中，“信息的传输占用第一资源”可以理解为在该第一资源上传输该信息，或者，传输该信息使用的资源为第一资源。例如，第一PSFCH的传输占用第一PRB集合和第一PSFCH对应的第二PRB集合，可以理解为，第一终端设备在第一PRB集合和第一PSFCH对应的第二PRB集合上发送该第一PSFCH。或者，也可以理解为，发送第一PSFCH所使用的PSFCH资源为：第一PRB集合和第一PSFCH对应的第二PRB集合。
下面结合图1所示场景对本申请实施例提供的技术方案进行说明。参见图2，为本申请提供的一种侧行通信方法的流程示意图。该方法包括：
S201，第一终端设备接收X个侧行数据。
其中，X为大于或等于1的整数。
X个侧行数据可以是来自一个终端设备，也可以是来自多个终端设备，这里不做具体限定。示例性的，第一终端设备接收来自X个终端设备的X个侧行数据。即第一终端设备分别从X个终端设备接收一个侧行数据。又或者，第一终端设备接收来自Z个终端设备的X个侧行数据。其中Z为大于或者等于1，且小于或者等于X的数值。即第一终端设备接收来自同一个终端设备的多个侧行数据。
以X等于1为例，第一终端设备可以接收来自第二终端设备的侧行数据。即第一终端设备从第二终端设备接收一个侧行数据。
以X等于5为例，第一终端设备接收来自5个终端设备的5个侧行数据。即第一终端设备分别从5个终端设备接收一个侧行数据。又或者，第一终端设备接收来自3个终端设备的5个侧行数据。其中，第一终端设备接收来自终端设备A的1个侧行数据，来自终端设备B的3个侧行数据，以及来自终端设备C的1个侧行数据。
侧行数据为终端设备之间传输的数据。一个示例中，侧行数据可以为侧行传输块(transmission block，TB)。
一种可能的实施方式中，第一终端设备可以接收多个侧行数据，其中该多个侧行数据包括上述X 个侧行数据。即第一终端设备接收的侧行数据的数量可以大于或等于X。
进一步的，第一终端设备可以根据该多个侧行数据确定待发送的至少一个PSFCH，并在该待发送的至少一个PSFCH确定上述X个侧行数据对应的X个PSFCH。其中，上述至少一个PSFCH可以包括承载HARQ信息的PSFCH和/或承载冲突信息的PSFCH。其中，HARQ信息指示第一终端设备是否成功解码侧行数据，若成功解码，则HARQ信息为肯定确认(acknowledgment，ACK)，第一终端设备没有成功解码侧行数据，HARQ信息为否定确认(negative acknowledgment，NACK)。冲突信息指示第一终端设备检测到其他终端设备的边缘链路控制信息(sidelink control information，SCI)，且SCI所指示的预留资源发生了冲突。这里，一个PSFCH承载一个HARQ信息，或者一个PSFCH承载一个冲突信息。
对于承载了HARQ信息的PSFCH，第一终端设备接收的侧行数据可以来自广播数据，组播数据或单播数据。下面结合侧行数据的传输情况，对第一终端设备确定是否发送承载HARQ信息的PSFCH的方式进行说明。
若侧行数据为单播，且相应的HARQ被使能，第一终端设备确定发送承载HARQ信息的PSFCH；
若侧行数据为组播，且组播反馈方式为ACK或NACK的反馈方式，且相应的HARQ被使能，第一终端设备确定发送承载HARQ信息的PSFCH；
若侧行数据为组播，且组播反馈方式为NACK only的反馈方式，且相应的HARQ被使能，且第一终端设备解码该侧行数据的结果为NACK，则第一终端设备确定发送承载HARQ信息的PSFCH。
对于承载了冲突信息的PSFCH，第一终端设备检测到调度数据的SCI，该SCI所指示的预留资源发生了冲突，即该SCI所指示的预留资源和另一个SCI所指示的预留资源发生了冲突，或者该SCI所指示的预留资源所在时隙为第一终端设备不期待接收数据的时隙。
应理解的，上述X个PSFCH可以包括承载HARQ信息的PSFCH和/或承载冲突信息的PSFCH。例如，X个PSFCH包括该A个侧行数据对应的A个HARQ信息，以及X-A个承载了冲突信息的PSFCH。若X个PSFCH包括承载冲突信息的PSFCH，S201可以理解为或者替换为“第一终端设备接收X’个侧行数据，X’小于或等于X。
一种具体的方式中，A可以等于0，即X个PSFCH均为承载冲突信息的PSFCH。上述S201也可以不执行。
可选的，第一终端设备可以通过如下方案1或方案2在待发送的至少一个PSFCH中确定发送X个PSFCH。
方案1，,在高层参数dl-P0-PSFCH被提供的情况下，若待发送的至少一个PSFCH的数量Nsch,Tx,PSFCH小于或等于第一终端设备支持的PSFCH的最大发送个数Nmax,PSFCH，X个PSFCH可以通过如下示例A或者示例B确定。
示例A：若PPSFCH，one+10log10Nsch,Tx,PSFCH≤P总，则上述X个PSFCH等于该待发送的至少一个PSFCH的数量，也就是上述X个PSFCH为该待发送的至少一个PSFCH。
其中，PPSFCH，one＝PO，PSFCH+10log102μ+αPSFCH·PL，其中，PO，PSFCH为高层参数dl-P0-PSFCH的取值；αPSFCH为高层参数dl-Alpha-PSFCH的取值，如没有配置高层参数dl-Alpha-PSFCH的取值，则αPSFCH＝1；αPSFCH和PO，PSFCH为基于下行路损调整发送功率的调整参数。PL为根据参考信号资源测量的路损值。参考信号(reference signal，RS)资源可以为第一终端设备用于确定下行控制信息(downlink control information，DCI)格式0-0调度的物理上行共享信道(physical uplink shared channel，PUSCH)传输的功率的RS资源，也可以为用于获取主信息块(master indication block，MIB)的同步信号/物理广播信道块(sync signal/physical broadcast channel，SSB)块相应的RS资源。
示例B，若PPSFCH，one+10log10Nsch,Tx,PSFCH＞P总，则第一终端设备在待发送的至少一个PSFCH中确定X个PSFCH，其中，X＜Nsch,Tx,PSFCH，其中，若1≤i≤k，Mi表示待发送的至少一个PSFCH中优先级值为i的承载HARQ信息的PSFCH的数量。若k≤i≤K，Mi表示待发送的至少一个PSFCH中优先级值为i-k的承载冲突信息的PSFCH的数量。k大于或等1，小于或等于K，k表示承载HARQ信息的PSFCH的最大优先级值。例如，若k＝8，则若1≤i≤8，Mi表示待发送的至少一个PSFCH中优先级值为i的承载HARQ信息的PSFCH的数量。若8≤i≤K，Mi表示待发送的至少一个PSFCH中优先级值为i-8的承载冲突信息的PSFCH的数量。K为满足 的最大值。若没有K的取值可以满足 则K等于0。其中，优先级值越高，表示优先级越低。
若待发送的至少一个PSFCH的数量Nsch,Tx,PSFCH大于第一终端设备支持的PSFCH的最大发送个数Nmax,PSFCH，X个PSFCH可以通过示例C或者示例D确定。
示例C，若PPSFCH，one+10log10Nmax,PSFCH≤P总，则上述X个PSFCH等于Nmax,PSFCH，也就是，第一终端设备在待发送的至少一个PSFCH中确定Nmax,PSFCH个PSFCH。具体的，对于待发送的至少一个PSFCH中承载HARQ信息的PSFCH，第一终端设备可以按照优先级值的升序进行排序，确定W个PSFCH。其中，若承载HARQ信息的PSFCH的数量大于或等于X，则W可以等于X，确定的W个PSFCH即为上述X个PSFCH。若承载HARQ信息的PSFCH的数量W小于X，则对于待发送的至少一个PSFCH中承载冲突信息的PSFCH，可以按照优先级值的升序进行排序，确定X-W个PSFCH，则上述X个PSFCH包括上述W个PSFCH以及上述X-W个PSFCH。
示例D，若PPSFCH，one+10log10Nmax,PSFCH＞P总，则第一终端设备在待发送的至少一个PSFCH中确定X个PSFCH，X＜Nmax,PSFCH。其中，在待发送的至少一个PSFCH中确定X个PSFCH的方式与示例B中在待发送的至少一个PSFCH中确定X个PSFCH的方式类似，这里不再展开说明。
方案2：若高层参数dl-P0-PSFCH未被提供，则第一终端设备在待发送的至少一个PSFCH中先按照承载HARQ信息的PSFCH的优先级值的升序，再按照承载冲突信息的PSFCH的优先级值的升序选择X个PSFCH。
S202，第一终端设备发送上述X个侧行数据对应的X个PSFCH。
可选的，本申请中X个PSFCH可以占用第一PRB集合以及X个第二PRB集合。即，该X个PSFCH的频域资源为第一PRB集合和X个第二PRB集合。第一PRB集合包括N个PRB，N个PRB为公共PRB，N为大于1的整数。可选的，上述N个PRB用于(或者支持)多个终端设备进行传输，但是在实际传输时该N个PRB上可以只有一个终端设备进行传输。不同的终端设备使用的公共PRB为相同的PRB。示例性的，公共PRB为任一终端设备均能够使用的PRB。或者公共PRB可以理解为不同终端设备在同一个PSFCH时域资源所使用的相同的PRB。或者，公共PRB可以理解为任何在该PSFCH时域资源发送PSFCH的终端设备均使用的PRB。即该公共PRB为系统内任一个终端设备均有资格使用的PRB。或者说该公共PRB为系统内任一个终端设备均能够使用的PRB。示例性的，第一终端设备，第二终端设备，第三终端设备均在该PSFCH时域资源发送PSFCH，该三个终端设备发送PSFCH所使用的资源均包括该公共PRB。
可选的，第一PRB集合可以包括一个交错资源块中的全部或部分PRB。
或者，第一PRB集合可以为PSFCH符号包括的全部PRB中的部分PRB。示例性的，第一PRB集合可以为PSFCH符号包括的全部PRB中的频域索引最大和最小的两个PRB。或者示例性的，第一PRB集合可以为PSFCH符号包括的全部PRB中在带宽边缘的PRB。
可选的，本申请中的N个公共PRB对应的公共码域资源可以为一个循环移位(cyclic shift，CS)值或者一个CS对，或者为资源池内配置的全部CS对。
为了便于理解，可以将第一PRB集合可以替换为第一资源集合，该第一资源集合包括N个公共资源，具体可以是N组频域码域资源，一组频域码域资源中包括一个或多个频域码域资源。其中，一个频域码域资源可以理解为由一个PRB和一个CS值构成的资源。
一种实现方式下，若N个公共PRB对应的公共码域资源为一个CS对，则一个公共资源包括由一个CS对(为了便于描述，称为指定CS对)与一个PRB组合得到的两个频域码域资源。在该实现方式中，N个PRB中每个PRB与指定CS对组成的频域码域资源为公共资源，而该PRB与其他CS对组成的频域资源不是公共资源。可选的，第一终端设备在公共资源中传输时，只会使用该PRB对应的CS对中的一个。
另一种实现方式下，若N个公共PRB对应的公共码域资源为一个CS值，则一个公共资源包括由一个CS(为了便于描述，称为指定CS)与一个PRB组合得到的频域码域资源。在该实现方式中，N个PRB中每个PRB与指定CS组成的频域码域资源为公共资源，而该PRB与其他CS组成的频域资源不是公共资源。
可选的，N个PRB分别对应的CS值可以为同一个，也可以各不相同。本申请对此不做限定。可选的，N个频域码域资源可以是在N个PRB对应的全部频域码域资源中，先按照CS值的升序(0至 11)再按照PRB索引的升序排序(或者先按照PRB索引的升序再按照CS值的升序排序)，公共频域码域资源可以按照固定的步长分布。例如步长为6。
另一种实现方式下，若N个公共PRB对应的公共码域资源为资源池内配置的全部CS对，则一个公共资源包括一个PRB对应的所有频域码域资源。也就是说该一个PRB对应的所有频域码域资源均不是专用资源。可选的，第一终端设备在公共资源中传输时，只会使用一个PRB对应的所有频域码域资源中的一个。
上述方案从频域和码域两个维度去设计公共资源，可以更有效的利用公共PRB上码域资源。
第二PRB集合包括m个PRB，m个PRB可以为专用(dedicated)PRB，m为大于或等于1的整数。上述m个PRB用于一个终端设备进行传输。专用PRB可以理解为某一个终端设备所使用的PRB。不同的终端设备所使用的专用PRB不同。专用PRB可以理解为在同一个PSFCH时域资源发送PSFCH的不同终端设备所使用的不同的PRB。
为了便于理解，可以将第二PRB集合可以替换为第二资源集合，该第二资源集合包括m个专用资源，具体可以是m组频域码域资源。专用资源的设计思路与公共资源的设计思路类似，具体可以参阅第一PRB中公共资源的相关描述，重复之处不再展开说明。
可以理解的，上述X个PSFCH占用的PRB在时域上对应相同的PSFCH时机(PSFCH occasion)，也就是，上述X个PSFCH占用的PRB在时域上属于相同的PSFCH occasion对应的PRB集合。即该X个PSFCH所使用的时域资源相同。或者理解为，第一终端设备在同一个时隙发送该X个PSFCH，或者，第一终端设备在同一个PSFCH时域资源发送该X个PSFCH。即该X个PSFCH所使用资源均位于同一个PSFCH时域资源所对应的全部时频资源内。其中，PSFCH occasion也可以称为PSFCH符号或者PSFCH时域资源。
需要说明的是，若不考虑自动增益控制(automatic gain control，AGC)符号，上述PSFCH时机可以包括用于传输PSFCH的符号(下面称为PSFCH符号)。PSFCH符号的前一个符号为PSFCH符号的复制(即PSFCH AGC符号和PSFCH符号中的内容完全相同)，用作AGC。
上述N个公共PRB可以是预配置的，也可以是预设的，也可以是网络设备指示的。该三种指示方式为“或”的关系。
一种实现方式中，上述N个公共PRB可以是PSFCH时机对应的PRB集合中指定的PRB。
例如，上述N个公共PRB可以为带宽边缘的PRB。例如，可以为RB set中首尾两个PRB(RB set中index最小和最大的两个PRB)。或者，可以为资源池中首尾两个PRB(RB set中index最小和最大的两个PRB)。
又例如，如图3A所示，一个PSFCH时机包括索引为0～51的PRB，上述N个公共PRB可以包括索引为0，5，10，15，20，25，30，35，40，45，50的PRB。
在网络设备指示上述N个公共PRB的方式中，网络设备具体可以是通过比特位图(bitmap)指示PSFCH时机对应的PRB集合中的公共PRB。或者，网络设备通过比特位图指示PSFCH符号对应的PSFCH资源中的公共PRB。该PSFCH资源为PSFCH符号对应的全部PRB中被配置用于传输PSFCH的PRB的集合。或者该PSFCH资源为PSFCH符号对应的全部PRB中被配置用于传输承载HARQ信息的PSFCH的PRB的集合。例如，该比特位图可以包括Y个比特，其中，一个比特可以指示对应的PRB是否为公共比特，Y为大于或等于N的整数。例如，若一个比特的取值为第一值指示对应的PRB为公共比特，取值为第二值指示对应的PRB不是公共PRB。第一值可以为0，第二值可以为1，或者，第一值为1，第二值为0。可以理解的，本申请中，比特位图中取值为第一值的比特个数为N，指示N个公共PRB。其中，比特位图的长度(也就是比特的个数)可以小于或等于PSFCH时机对应的PRB集合中包括的PRB的个数。
比特位图的第一个比特对应的PRB可以是预设的，也可以是预配置的，也可以是网络设备指示的，这里不做具体限定。
一种具体的实现方式中，比特位图的第一个比特可以对应PSFCH时机对应的PRB集合中索引最小的PRB。
在第一PRB集合包括N个公共资源的实施方式中，上述N个公共资源可以由PSFCH时机对应的资源集合中指定的资源(时频资源)以及对应的一个CS对组成。在网络设备指示的方式中，网络设备具体可以是通过比特位图(bitmap)指示PSFCH时机对应的PRB集合中的公共PRB，具体参阅前文描 述。该公共PRB与对应的CS对组成公共资源。举例说明，公共PRB对应的CS对可以为资源池配置的CS对中的第一个CS对。例如，CS对的总数为6对，分别为{0,6}；{1,7}；{2,8}；{3,9}；{4,10}；{5,11}，公共PRB对应的CS对为{0,6}。结合图3A所示举例，一个PSFCH时机包括索引为0～51的PRB，N个公共资源可以包括索引为0，5，10，15，20，25，30，35，40，45，50的PRB与对应CS对为{0,6}组成的频域码域资源，如图3B所示。该CS对可以是6个CS对中的一个。该CS对可以是预设的，或者预配置的，或者网络设备指示的。
上述N个公共资源可以由PSFCH时机对应的资源集合中指定的资源(时频资源)以及对应的一个CS值组成。在网络设备指示的方式中，网络设备具体可以是通过比特位图(bitmap)指示PSFCH时机对应的PRB集合中的公共PRB，具体参阅前文描述。该公共PRB与对应的CS对组成公共资源。举例说明，公共PRB对应的CS值可以为资源池配置的CS值中的第一个CS值。例如，资源池配置的CS值包括12个，分别为0；1；2；3；4；5；6；7；8；9；10；11，公共PRB对应的CS值为0。结合图3A所示举例，一个PSFCH时机包括索引为0～51的PRB，N个公共资源可以包括索引为0，5，10，15，20，25，30，35，40，45，50的PRB与对应的CS值0组成的频域码域资源，如图3C所示。该CS值可以是12个CS值中的一个。该CS值可以是预设的，或者预配置的，或者网络设备指示的。
另一种实现方式中，上述N个公共PRB可以属于一个交错资源块，该交错资源块可以是PSFCH时机对应的交错资源块集合中指定的交错资源块。示例性的，上述N个公共PRB在交错资源块中的位置可以是预设的，也可以是预配置的，还可以是网络设备指示的。
例如，如图4所示，一个PSFCH时机包括索引为0～51的PRB，该索引为0～51的PRB包括索引为1～5的交错资源块，可以将索引为1的交错资源块作为公共PRB。其余的PRB为专用PRB。
在网络设备指示上述N个公共PRB在交错资源块中的位置的方式中，具体可以通过比特位图指示N个公共PRB在交错资源块中的位置。其中，网络设备通过比特位图指示N个公共PRB在交错资源块中的位置的方式，与网络设备可以通过比特位图指示PSFCH时机对应的PRB集合中的公共PRB的方式类似，这里不再展开说明。
示例性的，上述N个公共PRB可以默认为PSFCH时机对应的交错资源块集合中index最大或index最小，或者中间位置的交错资源块所包括的PRB。
在第一PRB集合包括N个公共资源的实施方式中，N个公共资源可以由PSFCH时机对应的交错资源块集合中的一个交错资源块包括的PRB以及对应的一个CS对组成。例如，N个公共资源在频域上可以为PSFCH时机对应的交错资源块集合中index最大或index最小，或者中间位置的交错资源块所包括的PRB，在码域上对应一个CS对。该CS对可以是6个CS对中的一个。该CS对可以是预设的，或者预配置的，或者网络设备指示的。
或者N个公共资源可以在频域上包括PSFCH时机对应的交错资源块集合中的一个交错资源块包括的PRB，在码域上对应一个CS值。该CS值可以是12个CS值中的一个。该CS值可以是预设的，或者预配置的，或者网络设备指示的。
本申请中，X个PSFCH中的第一PSFCH的传输占用上述第一PRB集合以及第一PSFCH对应的第二PRB集合。或者，也可以描述为在上述第一PRB集合以及第一PSFCH对应的第二PRB集合上发送第一PSFCH。即第一PSFCH在上述第一PRB集合以及第一PSFCH对应的第二PRB集合中的每个PRB上重复发送第一PSFCH。其中，在第二PRB集合中发送的第一PSFCH为真正有效的，也就是，第一PSFCH对应的接收终端设备可以不接收第一PRB集合上传输的第一PSFCH，在第一PSFCH对应的第二PRB集合上接收第一PSFCH。由于第一PRB集合为公共PRB集合。因此该PRB集合上的传输信号包括但不限于第一PSFCH，因此第一PSFCH的接收终端设备无法识别出第一PSFCH。第一PSFCH的接收终端设备可以只在第一PSFCH对应的专用PRB上接收第一PSFCH。
第一PRB集合上发送的第一PSFCH可以是第一PSFCH本身，也可以是第一PSFCH的变形，例如，通过循环移位处理后的第一PSFCH。可选的，第一PRB集合上发送的任意两个第一PSFCH的循环移位可以相同，也可以不同，这里不做具体限定。示例性的，第一PSFCH在第一PRB集合中的每个PRB上重复发送。或者第一PSFCH在第一PRB集合中的每个PRB上重复发送且每个PRB上发送的PSFCH对应的CS值不同。第一PSFCH在第二PRB集合中的每个PRB上重复发送。或者第一PSFCH在第二PRB集合中的每个PRB上重复发送且每个PRB上发送的PSFCH对应的CS值不同。这里第一PSFCH可以理解为PSFCH格式0或者PSFCH序列，PSFCH对应的CS值即PSFCH序列对应的CS值。
可选的，第一终端设备可以通过如下方式确定第一PSFCH对应的第二PRB集合：根据第一PSFCH对应的数据所使用的资源的位置，在PSFCH时机对应的PRB集合中确定第一PSFCH对应的第二PRB集合。
示例性的，可以根据第一PSFCH对应的数据所使用的子信道的起始子信道或者全部子信道以及该数据所在时隙，在PSFCH时机对应的专用PRB集合中确定第一PSFCH对应的第二PRB集合。其中，该PSFCH时机对应的专用PRB集合为PSFCH时机对应的全部PSFCH资源中，排除了公共PRB集合后的剩余PRB的集合。
一种实施方式中，第一终端设备根据时隙和子信道确定可用的PRB集合，并确定PRB集合对应的频域码域资源中可用的频域码域资源。假设公共PRB集合对应的全部码域资源均不是专用资源，可以根据时隙和子信道确定PSFCH时隙中对应的PRB集合，具体的，PRB集合可以包括索引属于的PRB。
其中，
Nsubch是子信道的个数。这里可以理解为一个RB set包括的子信道，或者是一个资源池内包括的子信道。
是PSFCH时机对应的PSSCH时隙的数量，该PSSCH时隙传输的PSSCH在该PSFCH时机中反馈相应的HARQ信息。其中，PSFCH时机所在时隙为PSSCH时隙，间隔N个时隙后，第一个包括PSFCH资源的时隙。这里N为最小值。
为用于传输PSFCH的专用PRB集合中PRB的数量。
为单个时隙单个子信道对应的PRB集合中PRB的数量。第二PRB集合的数量可以小于或者等于其中，为1或者为PSSCH所使用的子信道的个数。即PSSCH所使用的子信道多于一个，该多个子信道中的每个子信道对应的PSFCH资源均可以用于传输该数据对应的PSFCH。
该第一PSFCH对应的频域码域资源为：其中，为资源池内配置的CS对的数量。
另一种实施方式中，第一终端设备根据第一PSFCH对应的数据所使用的起始子信道或子信道数量以及所在时隙，在PSFCH时机对应的PSFCH资源中确定传输第一PSFCH可用的资源集合。传输第一PSFCH可用的资源集合中频域码域资源的数量为其中，是PSFCH时机对应的全部PSFCH资源的数量。为公共PRB以及公共PRB对应的公共码域资源的数量，这里公共码域资源可以为一个CS值或者一个CS对或者资源池内的全部CS对。其他参数的含义参阅前文的描述，这里不再重复说明。
第一PSFCH可用的资源集合的排序方式可以是先根据频域资源排序，再根据码域资源排序。或者，也可以是先根据码域资源排序，再根据频域资源排序。具体的，根据频域资源排序为根据PRB索引从小到大的顺序排序或者根据PRB索引的升序排序。根据码域资源排序为根据CS对从小到大的顺序排序或者根据CS的升序排序。
需要说明的是，上述PSFCH资源可以只包括用于传输承载HARQ信息的PSFCH资源。或者，上述PSFCH资源可以只包括用于传输承载冲突信息的PSFCH资源。或者上述PSFCH资源可以包括用于传输冲突信息或HARQ信息的PSFCH资源。
可选的，第一资源集合为N个公共资源(频域码域资源)。则专用资源集合为PSFCH时机对应的全部PSFCH资源中，除了N个公共资源以外的专用PSFCH资源集合。即专用资源集合为PSFCH时机对应的全部PSFCH资源中，排除了N个公共资源后的剩余资源的集合。这里N个公共资源可以为N个PRB对应的1个CS对，或者N个PRB对应的一个CS值，或者N个PRB对应的资源池内的全部CS对。这里N个PRB可以对应同一个CS值或者不同的PRB可以对应不同的CS值。或者N个PRB可以对应同一个CS对或者不同的PRB可以对应不同的CS对。
该第一PSFCH对应的频域码域资源为其中，为资源池内配置的CS对的数量。可以是公共资源，公共资源对应的频域资源可以为上述公共码域资源。其中。该公共资源为公共PRB对应的公共CS值，则该公共CS值对应的CS值(公共CS值+6)用于组播选项option1。该第一PSFCH对应的频域码域资源的确定方式和上述相同，这里不再重复说明，区别点在于该实施方式中，为用于传输PSFCH的PRB集合(包括专用的PRB和公共的PRB)。该情况下，m个专用资源的数量可以小于或者等于第一PSFCH对应的频域码域资源的数量。
为了便于描述，下面将上述第一PRB集合中的N个PRB称为公共PRB，第二PRB集合中的m个PRB均称为专用PRB。
需要说明的是，每个PSFCH对应的第二PRB集合不同，则第二PRB集合包括的PRB个数m可以相同或者不同，本发明对此不做限定。
可选的，第一PSFCH在第一PRB集合中任一PRB上的发送功率小于或等于在第二PRB集合中任一PRB上的发送功率。也就是，第一PSFCH在任一公共PRB上的发送功率小于或等于在任一专用PRB上的发送功率。
一种可能的实现方式中，第一PSFCH在第一PRB集合和第二PRB集合中的任一PRB上的发送功率为将第一PSFCH的发送功率根据第一PRB集合和第二PRB集合包括的PRB总数(即N+m)进行等分得到。通过上述方式，第一PSFCH在任意两个占用的PRB上的发送功率相同。
示例性的，第一PSFCH在任一占用的PRB上的发送功率为第一PSFCH的发送功率的或者第一PSFCH在任一占用的PRB上的发送功率满足下述公式：PPSFCH1-10log10(N+m)[dBm]，其中PPSFCH1为第一PSFCH的发送功率。
以一个PSFCH的一次传输占用一个PRB为例，在该举例中，m＝1，第一PSFCH在N个公共PRB以及一个专用PRB上重复发送N+1次，第一PSFCH在任一占用的PRB上的发送功率(也就是每个第一PSFCH的发送功率)为第一PSFCH的发送功率的或者第一PSFCH在任一占用的PRB上的发送功率满足下述公式：PPSFCH1-10log10(N+1)[dBm]，其中PPSFCH1为第一PSFCH的发送功率。
可见，在上述实现方式中，第一PSFCH在第一PRB集合中任一PRB(也就是任一公共PRB)上的发送功率等于在第二PRB集合中任一PRB(也就是任一专用PRB)上的发送功率。
m的数量越大(m的值越大)，则在第二PRB集合上的总的功率越高，即承载有效信息的PSFCH所分配的功率越高，对于接收第一PSFCH的终端设备而言，接收成功的概率越高，越能保证性能。
另一种可能的实现方式中，第一PSFCH在第一PRB集合(也就是N个公共PRB)上总的发送功率与在第二PRB集合(也就是m个专用PRB)上总的发送功率为根据第一PSFCH的发送功率和调整因子确定的。其中，调整因子可以是一个固定值，也可以是预设的值，也可以是预配置的值，也可以是网络设备指示的值等等。
一个示例中，第一PSFCH在第一PRB集合上总的发送功率满足如下公式：
第一PSFCH在第二PRB集合上总的发送功率满足如下公式：
其中，P1为第一PSFCH的发送功率，α1为调整因子，α1大于0且小于1。
另一个示例中，第一PSFCH在第一PRB集合上总的发送功率满足如下公式：
第一PSFCH在第二PRB集合上总的发送功率满足如下公式：
其中，β1为调整因子。
再一个示例中，第一PSFCH在第一PRB集合上总的发送功率满足如下公式：
第一PSFCH在第二PRB集合上总的发送功率满足如下公式：
其中，β2为调整因子。
可选的，通过调整上述调整因子的大小可以使得第一PSFCH在任一公共PRB上的发送功率小于或者等于在任一专用PRB上的发送功率。例如，上述α1可以小于或者等于以一个PSFCH的一次传输占用一个PRB为例，在该举例中，m＝1，上述α1可以小于又或者，可以使得第一PSFCH在公共PRB上的总功率小于或等于在第二PRB上的总功率，此时上述α1可以小于或者等于1/2。
又例如，上述β1可以大于或者等于可选的，上述β1小于以一个PSFCH的一次传输占用一个PRB为例，在该举例中，m＝1，上述β1可以大于或者等于再例如，上述 β2可以大于或等于0。可选的，上述β2小于以一个PSFCH的一次传输占用一个PRB为例，在该举例中，m＝1，上述β2可以大于或等于0。
再一个示例中，第一PSFCH在第二PRB集合上总的发送功率大于一个功率阈值，该功率阈值小于第一PSFCH的发送功率。第一PSFCH的发送功率减去该功率阈值的剩余功率为第一PSFCH在第一PRB集合上总的发送功率。该功率阈值可以是预设的，或者预配置的，或者由网络设备指示的。
再一个示例中，第一PSFCH在第二PRB集合中的一个PRB上的发送功率是根据第一PSFCH的发送功率在第一PSFCH占用的PRB上等分的功率和调整因子得到的。剩余的功率(第一PSFCH的发送功率减去第一PSFCH在第二PRB集合上总的发送功率)用于在第一PRB集合上发送。具体的，第一PSFCH在第二PRB集合中每个PRB上的发送功率为第一PSFCH在第二PRB集合上总的发送功率满足如下公式：
第一PSFCH在第一PRB集合上总的发送功率满足如下公式：
第一PSFCH在第一PRB集合中每个PRB上的发送功率为
其中，P1为第一PSFCH的发送功率，α2为调整因子，α2大于0。
进一步，该调整因子或功率阈值可以和信道拥塞程度、LBT失败次数、重传次数等相关。具体，信道拥塞程度越大，调整因子α1越小，调整因子β1越大，调整因子β2越大，第一PSFCH在第二PRB集合上总的发送功率越大。这是因为信道拥塞时，用于传输有效信息的功率应该增加来保证性能。LBT失败次数过多时也应该提高有效信息分配的功率来保证性能，重传次数过多时，也可应该提高有效信息分配的功率来保证性能。
由于在第一终端设备的最大发送功率的限制下，原本在一个专用PRB上发送第一PSFCH的功率用于发送多个第一PSFCH(即在一个专用PRB上以及N个公共PRB上均发送第一PSFCH)，且公共PRB传输的PSFCH是无效的。因此会导致专用PRB上传输的第一PSFCH的发送功率下降。上述方式通过降低第一PSFCH在公共PRB上的发送功率，增加第一PSFCH在专用PRB上的发送功率，则提升有效信号(也就是专用PRB上传输的第一PSFCH)的信号质量，从而提升传输性能。
可选的，在上述两个示例中，第一PSFCH在第一PRB集合中任一PRB(也就是任一公共PRB)上的发送功率可以为的或者满足下述公式：
第一PSFCH在第二PRB集合中任一PRB(也就是任一专用PRB)上的发送功率可以为的或者满足下述公式：
可选的，第一PSFCH在第一PRB集合和第二PRB集合中的传输满足功率频谱密度限制(PSD limit)。若第一PSFCH在第一PRB集合和第二PRB集合中的传输不满足功率频谱密度限制，可以丢弃第一PRB集合和第二PRB集合中部分第一PSFCH的传输。或者更换第二PRB集合中PRB资源。即从第一PSFCH可用的资源集合中选择可以满足PSD limit的资源。
以上介绍了X个PSFCH中第一PSFCH的发送方式。下面介绍X个PSFCH中其他PSFCH的发送方式。
一种可能的实施方式中，上述X个PSFCH中其他PSFCH的发送方式与第一PSFCH的方式相同。
以上述X个PSFCH中的第二PSFCH为例，第二PSFCH也可以占用第一PRB集合和第二PSFCH对应的第二PRB集合。应理解，第一PSFCH与第二PSFCH占用的第一PRB集合相同，占用的第二PRB集合不同。
第二PSFCH的发送功率在占用的PRB上的分配方式与第一PSFCH的发送功率在占用的PRB上的分配方式相同。第二PSFCH在任一占用的PRB上的发送功率的分配方式，具体可以参阅第一PSFCH在任一占用的PRB上的发送功率的分配方式，这里不再展开说明。
举例说明，以图4所示PSFCH时机为例，假设X个PSFCH包括PSFCH#1～PSFCH#5，一个PSFCH的一次传输占用1个PRB，则该X个PSFCH的方式为：PSFCH#1的传输占用交错资源块#1的全部11个PRB，以及交错资源块#2的第一个PRB。PSFCH#2的传输占用交错资源块#1的全部11个PRB，以及交错资源块#3的第一个PRB。PSFCH#3的传输占用交错资源块#1的全部11个PRB，以及交错资源块#4的第一个PRB。PSFCH#4的传输占用交错资源块#1的全部11个PRB，以及交错资源块#5的第一 个PRB。PSFCH#5的传输占用交错资源块#1的全部11个PRB，以及交错资源块#2的第二个PRB。如图5所示。
可选的，在上述实施方式中，X个PSFCH中每个PSFCH的发送功率可以通过如下方式1或方式2确定。
方式1：可以为将第一终端设备的最大发送功率P总根据X的取值进行等分得到的。示例性的，X个PSFCH中任一PSFCH的发送功率可以为第一终端设备的最大发送功率P总的即Pi＝P总-10log10X[dBm]。
例如，在高层参数dl-P0-PSFCH未被提供的情况下，X个PSFCH中每个PSFCH的发送功率Pi可以满足：Pi＝P总-10log10X[dBm]。其中，Pi＝P总-10log10X[dBm]等同于
方式2：X个PSFCH中每个PSFCH的发送功率可以为根据待发送的至少一个PSFCH的优先级、PSFCH的最大发送个数、第一终端设备的最大发送功率中的至少一个确定，其中，至少一个PSFCH包括X个PSFCH。
下面结合S301中X个PSFCH的不同确定方式，对X个PSFCH中每个PSFCH的发送功率进行说明。
结合上述示例A，Pi＝PPSFCH，one，也就是X个PSFCH中每个PSFCH的发送功率均为PPSFCH，one。
结合上述示例B，Pi＝min(P总-10log10X，PPSFCH，one)，也就是，X个PSFCH中每个PSFCH的发送功率均为min(P总-10log10X，PPSFCH，one)。
结合上述示例C，Pi＝PPSFCH，one，也就是X个PSFCH中每个PSFCH的发送功率均为PPSFCH，one。
结合上述示例D，Pi＝min(P总-10log10X，PPSFCH，one)，也就是，X个PSFCH中每个PSFCH的发送功率均为min(P总-10log10X，PPSFCH，one)。
另一种可能的实施方式中，上述X个PSFCH中其他PSFCH的发送方式与第一PSFCH的方式不同。以上述X个PSFCH中的第二PSFCH为例，第二PSFCH也可以占用第二PSFCH对应的第二PRB集合。应理解，第一PSFCH与第二PSFCH占用的第二PRB集合不同。这里的不同可以理解为频域资源不同，也可以理解为频域码域资源不同(具体可以包括频域资源不同和频域资源相同码域资源不同两种情况)。
该实施方式与上一个实施方式的区别在于，上一个实施方式中每个PSFCH的传输均占用公共PRB和专用PRB，而该实施方式中只有一个PSFCH(即第一PSFCH)的传输占用公共PRB和专用PRB，其他PSFCH的传输仅占用专用PRB。该方法下，既可以满足最小占用带宽的要求，又避免使用过多的功率传输无效信息。
示例性的，在上述实施方式中，第一PSFCH可以为X个PSFCH中优先级最低的PSFCH。以优先级值越小，优先级越高为例，第一PSFCH可以为X个PSFCH中优先级值最大的PSFCH。一个具体的示例中，若X个PSFCH均为承载HARQ信息的PSFCH，则第一PSFCH可以为X个PSFCH中优先级值最大的PSFCH。若X个PSFCH包括承载HARQ信息的PSFCH和承载冲突信息的PSFCH，则第一PSFCH可以为X个PSFCH中优先级值最大的承载冲突信息的PSFCH。
举例说明，以图4所示PSFCH时机为例，假设X个PSFCH包括PSFCH#1～PSFCH#5，PSFCH#1的优先级最低。若一个PSFCH的一次传输占用1个PRB，则该X个PSFCH的方式为：PSFCH#1的传输占用交错资源块#1的全部11个PRB，以及交错资源块#2的第一个PRB。PSFCH#2的传输占用交错资源块#3的第一个PRB。PSFCH#3的传输占用交错资源块#4的第一个PRB。PSFCH#4的传输占用交错资源块#5的第一个PRB。PSFCH#4的传输占用交错资源块#2的第二个PRB。如图6所示。
第二PSFCH在第二PRB集合中任一PRB(也就是任一专用PRB)上的发送功率可以为第二PSFCH在第二PSFCH的发送功率的其中，以一个PSFCH的一次传输占用一个PRB为例，该举例中m＝1，第二PSFCH在占用的专用PRB上的发送功率为该第二PSFCH的发送功率。
在上述实施方式中，X个PSFCH中每个PSFCH的发送功率可以通过如下上述方式1或上述方式2或如下方式3确定。其中，方式1和方式2可以参阅前文的描述，这里不再重复说明。
方式3：以X个PSFCH中PSFCH#1为例，PSFCH#1的发送功率可以为根据第一终端设备的最大发送功率、X个PSFCH占用的PRB总数(即N+X×m)以及该PSFCH#1占用的PRB数量确定的。若一个PSFCH的一次传输占用一个PRB，该方式也可以描述为：PSFCH#1的发送功率可以为根据第一终端设备的最大发送功率、X个PSFCH的总发送次数以及该PSFCH#1的发送次数确定的。
例如，第一PSFCH的发送功率为根据第一终端设备的最大发送功率P总、X个PSFCH占用的PRB总数(即N+X×m)以及第一PSFCH占用的PRB数量(即N+m)确定的。示例性的，第一PSFCH的发送功率P1满足如下公式：
以一个PSFCH的一次传输占用一个PRB为例，该举例中m＝1第一PSFCH的发送功率P1满足如下公式：
第二PSFCH的发送功率为根据第一终端设备的最大发送功率P总、X个PSFCH占用的PRB总数(即N+X×m)以及第二PSFCH占用的PRB数量(即m)确定的。示例性的，第一PSFCH的发送功率P1满足如下公式：
以一个PSFCH的一次传输占用一个PRB为例，该举例中m＝1第二PSFCH的发送功率P2满足如下公式：
上述实施方式中，可以减少公共PRB上传输的PSFCH的数量，从而可以提升有效信号(即专用PRB上承载的PSFCH)的发送功率，进而可以提升有效信号(也就是专用PRB上传输的PSFCH)的信号质量，提升传输性能。因此通过上述方式可以在满足OCB需求的前提下进一步提升PSFCH传输的性能。
本申请中通过在公共PRB上发送第一PSFCH，使得第一终端设备的SL通信可以满足OCB需求。并且，通过降低第一PSFCH在公共PRB上的发送功率，增加第一PSFCH在专用PRB上的发送功率，则提升有效信号(也就是专用PRB上传输的第一PSFCH)的信号质量，从而提升传输性能。因此通过上述方式可以在满足OCB需求的前提下提升PSFCH传输的性能。
并且，在X个PSFCH的发送方式相同，即每个PSFCH的传输均占用N个公共PRB以及一个专用PRB的方案中，实现复杂度较低。
在X个PSFCH中第一PSFCH的传输占用N个公共PRB以及一个专用PRB，而其他PSFCH的传输仅占用专用PRB的方案中，可以减少公共PRB上传输的PSFCH的数量，从而可以提升有效信号(即专用PRB上承载的PSFCH)的发送功率，进而可以提升有效信号(也就是专用PRB上传输的PSFCH)的信号质量，提升传输性能。因此通过上述方式可以在满足OCB需求的前提下进一步提升PSFCH传输的性能。
本申请提供另一种侧行通信方法的流程示意图。该方法与图2所述方法不同的是，图2所述方法中至少有一个PSFCH的传输占用N个PRB和m个专用PRB，而本侧行通信方法中一个PSFCH的传输仅占用N个公共PRB，其他PSFCH的传输仅占用专用PRB。
参见图7，为本申请提供的另一种侧行通信方法的流程示意图，该方法包括：
S701，第一终端设备接收X个侧行数据，X为大于或等于1的整数。
S701具体可以参阅上述S201的相关描述，这里不再重复说明。
S702，第一终端设备发送Y个PSFCH，Y为大于或等于X的整数。
其中，Y个PSFCH中PSFCH#A的传输占用第一PRB集合，Y个PSFCH中PSFCH#B的传输占用PSFCH#B对应的第二PRB集合。应理解，PSFCH#A对应发明内容的第二方面中的第一PSFCH，PSFCH#B对应发明内容的第二方面中的第二PSFCH。
第一PRB集合和第二PRB集合可以参阅图2所述方法中关于第一PRB集合和第二PRB集合的相关描述，这里不再重复说明。
第一种可能的实施方式中，Y个PSFCH为X个侧行数据对应的X个PSFCH。该方式中，Y＝X。
在该方案中，PSFCH#A可以为X个PSFCH中任一PSFCH。
一个具体的示例中，PSFCH#A可以为X个PSFCH中优先级最低的PSFCH。以优先级值越小，优先级越高为例，PSFCH#A可以为X个PSFCH中优先级值最大的PSFCH。一个具体的示例中，若X个PSFCH均为承载HARQ信息的PSFCH，则PSFCH#A可以为X个PSFCH中优先级值最大的PSFCH。若X个PSFCH包括承载HARQ信息的PSFCH和承载冲突信息的PSFCH，则PSFCH#A可以为X个 PSFCH中优先级值最大的承载冲突信息的PSFCH。
另一个具体的示例中，PSFCH#A可以由第一终端设备在实现时在X个PSFCH中选择。可选的，PSFCH#A可以是X个侧行数据中重传次数中最小的侧行数据对应的PSFCH。
举例说明，以图4所示PSFCH时机为例，假设X个PSFCH包括PSFCH#1～PSFCH#5，PSFCH#1的优先级最低。若一个PSFCH的一次传输占用1个PRB，则该X个PSFCH的方式为：PSFCH#1的传输占用交错资源块#1的全部11个PRB。PSFCH#2的传输占用交错资源块#2的第一个PRB。PSFCH#3的传输占用交错资源块#3的第一个PRB。PSFCH#4的传输占用交错资源块#4的第一个PRB。PSFCH#4的传输占用交错资源块#5的第二个PRB。如图8所示。
第二种实施方式中，Y个PSFCH包括X个侧行数据对应的X个PSFCH和一个预配置(或预定义)的PSFCH。该方式中，Y＝X+1。可选的，上述预配置(或预定义)的PSFCH是随机生成的PSFCH。即对于PSFCH中承载的信息不做限定。该PSFCH中承载的信息可以是PSFCH序列对应的任一个CS值。或者PSFCH为CS值为0的PSFCH序列。或者，也可以理解为在第一PRB集合上发送的PSFCH可以是随时生成的。一种示例性说明中，上述预配置(或预定义)的PSFCH可以包括一个或多个随机生成的PSFCH。或者，也可以理解为在第一PRB集合上发送的PSFCH可以是随时生成的，且第一PRB集合中任意两个PRB上传输的PSFCH可以相同，也可以不同，这里不做具体限定。
在该方案中，PSFCH#A可以为上述预配置(或预定义)的PSFCH。
举例说明，以图4所示PSFCH时机为例，假设X个PSFCH包括PSFCH#1～PSFCH#5，一个PSFCH的一次传输占用1个PRB，则该Y个PSFCH的方式为：预配置的PSFC1的传输占用交错资源块#1的全部11个PRB。PSFCH#1的传输占用交错资源块#2的第一个PRB。PSFCH#2的传输占用交错资源块#3的第一个PRB。PSFCH#3的传输占用交错资源块#4的第一个PRB。PSFCH#4的传输占用交错资源块#5的第一个PRB。PSFCH#5的传输占用交错资源块#2的第二个PRB。如图9所示。
可选的，上述Y个PSFCH中每个PSFCH的发送功率的确定方式具体可以参阅前文方式1～方式3中的相关描述，这里不再重复说明。需要说明的是，在第二实施方式中，预配置(或预定义)的PSFCH的优先级可以为最高优先级。可选的，预配置(或预定义)的PSFCH的优先级为预配置的或者由网络设备配置的。示例性的，优先级的取值范围可以是正整数1至8。
可选的，PSFCH#A在第一PRB集合中的任一PRB(也就是任一公共PRB)上的发送功率为将PSFCH#A的发送功率根据第一PRB集合包括的PRB总数(也就是公共PRB的总数N)进行等分得到。若一个PSFCH的一次传输占用一个PRB，该方式也可以描述为：PSFCH#A每次传输的发送功率为将PSFCH#A的总发送功率根据PSFCH#A的发送次数(也就是N)进行等分得到。
示例性的，PSFCH#A在任一占用的PRB上的发送功率为PSFCH#A的发送功率的
PSFCH#B在第二PRB集合中的任一PRB(也就是任一专用PRB)上的发送功率为将PSFCH#B的发送功率根据第二PRB集合包括的PRB总数m进行等分得到。示例性的，PSFCH#B在任一占用的PRB上的发送功率为PSFCH#B的发送功率的以一个PSFCH的一次传输占用一个PRB为例，在该举例中，m＝1，PSFCH#B在对应的专用PRB上的发送功率即为该PSFCH#B的总发送功率。
本申请中通过在公共PRB上发送PSFCH，使得第一终端设备的SL通信可以满足OCB需求。并且，在公共PRB上发送优先级最低的PSFCH或者预配置的PSFCH，可以保证优先级高的PSFCH的信号质量，从而提升传输性能。因此通过上述方式可以在满足OCB需求的前提下提升PSFCH传输的性能。
并且，通过上述方式中，一个PSFCH的传输占用N个公共PRB，而其他PSFCH的传输仅占用专用PRB，可以减少公共PRB上传输的PSFCH的数量，从而可以提升有效信号(即专用PRB上承载的PSFCH)的发送功率，进而可以提升有效信号(也就是专用PRB上传输的PSFCH)的信号质量，提升传输性能。因此通过上述方式可以在满足OCB需求的前提下进一步提升PSFCH传输的性能。
本申请还提供另一种侧行通信方法。该方法包括：第一终端设备在第一时隙中的第一起始符号或所述第一起始符号前成功接入信道；所述第一终端设备在所述第一起始符号开始传输侧行数据，所述侧行数据承载于PSSCH；其中，所述第一时隙包括所述第一起始符号和第二起始符号，所述第二起始符号为所述第一起始符号之后的符号；所述第一起始符号和所述第二起始符号为自动增益控制(automatic gain control，AGC)符号。所述第一起始符号为所述第一起始符号的下一个符号的复制，所述第二起始符号为所述第二起始符号的第一个符号的复制。对应的，第二终端设备在第一起始符号后接收PSSCH和相应的PSCCH。所述第二终端设备在第二起始位置进行AGC。
可选的，所述PSSCH在速率匹配时所使用的符号不包括第一起始符号和第二起始符号。
上述第二起始符号可以理解为用于传输PSCCH/PSSCH的候选起始符号。该候选起始符号为AGC符号，因此不用于传输真正有效的PSCCH/PSSCH。该第二起始符号可以为下一个符号的复制，也可以为其他PSCCH/PSSCH传输占用符号的其中一个符号的复制。
上述第一起始符号可以理解为用于传输PSCCH/PSSCH的候选起始符号。当第一终端设备在第一起始符号或者之前成功接入信道，则从第一起始符号开始传输PSSCH和相应的PSCCH。相应的，当第一终端设备在第一起始符号之后，第二起始符号或者之前成功接入信道，则从第二起始符号开始传输PSSCH和相应的PSCCH。
上述第一起始符号可以为所述第一时隙中的第一个符号。以常规循环前缀(normal cyclic prefix，NCP)为例，一个时隙中包括14个符号，按照时域先后顺序分别记为符号0，符号1，符号2，符号3，符号4，符号5，符号6，符号7，符号8，符号9，符号10，符号11，符号12，符号13。这里第一时隙中的第一个符号为符号0。
第二起始符号可以为所述第一时隙中的第六个符号。即第二起始符号可以为符号5。PSSCH和相应PSCCH的传输占用的时域资源长度为13，且PSCCH占用的时域长度为2时：
2符号的DMRS时域位置包括符号3和符号10；
3符号的DMRS时域位置包括符号1、符号6和符号11；
4符号的DMRS时域位置包括符号1、符号4、符号7、符号10；
PSSCH和相应PSCCH的传输占用的时域资源长度为13，且PSCCH占用的时域长度为3时：
2符号的DMRS时域位置包括符号4和符号10；
3符号的DMRS时域位置包括符号1、符号6和符号11；
4符号的DMRS时域位置包括符号1、符号4、符号7、符号10；
因此当第二起始符号为符号5时，不会影响任一种配置下的DMRS符号。可以保证DMRS不受第二起始符号影响，来保证解调性能。
或者，第二起始符号为第一时隙中第一符号以及所述第一符号之后第一个不包括PSSCH解调参考信号(demodulation reference signal，DMRS)的符号。其中，所述第一符号为所述第一时隙中PSCCH占用的符号的下一个符号或者为第五个符号。PSCCH占用符号为符号1和符号2时，第一符号为符号3。PSCCH占用符号为符号1、符号2和符号3时，第一符号为符号4。这样第二起始符号既不影响PSCCH符号也不影响DMRS符号。
可选的，第一终端设备对应的资源池包括一个资源块集合，所述资源池为用于第一终端设备进行侧行通信的资源集合。
一种可能的实施方式中，所述第一终端设备还可以发送参考信号指示信息，所述参考信号指示信息指示所述PSSCH的DMRS符号的时域位置，所述DMRS符号的时域位置不包括第二起始符号的位置。例如，第二个起始符号为符号4，则第一终端设备发送参考信号指示信息时，所述参考信号指示信息所指示的DMRS符号的时域位置不包括符号4的位置。例如，PSSCH和相应PSCCH的传输占用的时域资源长度为13，且PSCCH占用的时域长度为3时：
2符号的DMRS时域位置包括符号4和符号10；
3符号的DMRS时域位置包括符号1、符号6和符号11；
4符号的DMRS时域位置包括符号1、符号4、符号7、符号10；
此时所述第一终端设备可以指示3符号的DMRS时域位置。这样第二个AGC符号不会影响DMRS带来的解调性能。
可选的，所述第一终端设备接收第一使能信息，所述第一使能信息用于确定所述资源池内支持一个时隙内包括一个起始符号(第一起始符号)，还是一个时隙内包括两个起始符号(第一起始符号和第二起始符号)。所述第一使能信息来自网络设备，或者所述第一使能信息是预配置的。
可选的，所述第一时隙中的所述第二起始符号的位置由网络设备配置或者预配置。其中，所述第二起始符号的位置来自候选位置集合，所述候选位置集合包括以下集合中一个或多个元素：{4,5,6,7}。所述候选位置集合由网络设备配置或预配置或预定义。
基于与方法实施例的同一发明构思，本申请实施例提供一种侧行通信装置，该通信装置的结构可以如图10所示，包括通信模块1001和处理模块1002。其中，处理模块1002用于处理通信过程中涉 及到的算法、软件、程序、存储等。通信模块1001用于收发信号，可选的，通信模块1001可以包括发送模块和接收模块，发送模块用于发送无线信号，接收模块用于接收无线信号。
在一种具体的实施方式中，通信装置具体可以用于实现图2所述的实施例中第一终端设备执行的方法，该装置可以是第一终端设备本身，也可以是第一终端设备中的芯片或芯片组或芯片中用于执行相关方法功能的一部分。其中，通信模块1001，用于与其他终端设备进行通信。处理模块1002，用于通过通信模块1001接收X个侧行数据，X为大于或等于1的整数；以及，通过通信模块1001发送X个侧行数据对应的X个PSFCH；其中，X个PSFCH中的第一PSFCH的传输占用第一PRB集合以及第一PSFCH对应的第二PRB集合；第一PRB集合包括N个PRB，N个PRB为公共PRB，第二PRB集合包括m个PRB，N为大于1的整数，m为大于或等于1的整数；第一PSFCH在第一PRB集合中任一PRB上的发送功率小于或等于在第二PRB集合中任一PRB上的发送功率。
示例性的，第一PSFCH在第一PRB集合和第二PRB集合中的任一PRB上的发送功率为将第一PSFCH的发送功率根据第一PRB集合和第二PRB集合包括的PRB总数进行等分得到。
示例性的，第一PSFCH在第一PRB集合上总的发送功率与在第二PRB集合上总的发送功率为根据第一PSFCH的发送功率和调整因子确定的。
示例性的，第一PSFCH在第一PRB集合上总的发送功率满足如下公式：
第一PSFCH在第二PRB集合上总的发送功率满足如下公式：
其中，P1为第一PSFCH的发送功率，α1为调整因子，α1大于0且小于1。
示例性的，第一PSFCH在第一PRB集合上总的发送功率满足如下公式：
第一PSFCH在第二PRB集合上总的发送功率满足如下公式：
其中，P1为第一PSFCH的发送功率，β1为调整因子。
示例性的，第一PSFCH在第一PRB集合上总的发送功率满足如下公式：
第一PSFCH在第二PRB集合上总的发送功率满足如下公式：
其中，P1为第一PSFCH的发送功率，β2为调整因子。
示例性的，第一PRB集合包括一个交错资源块中的全部或部分PRB。
示例性的，X个PSFCH中的第二PSFCH占用第一PRB集合和第二PSFCH对应的第二PRB集合。
示例性的，第一PSFCH的发送功率为将第一终端设备的最大发送功率根据X的取值进行等分得到的；
或者，第一PSFCH的发送功率为根据待发送的至少一个PSFCH的优先级、PSFCH的最大发送个数、第一终端设备的最大发送功率中的至少一个确定，其中，至少一个PSFCH包括X个PSFCH。
示例性的，X个PSFCH中的第二PSFCH的传输占用第二PSFCH对应的第二PRB集合。
示例性的，第一PSFCH的发送功率为根据第一终端设备的最大发送功率、X个PSFCH占用的PRB总数以及第一PSFCH占用的PRB数量确定的。
示例性的，第一PSFCH的发送功率P1满足如下公式：
其中，P总为第一终端设备的最大发送功率。
示例性的，第一PSFCH为X个PSFCH中优先级最低的PSFCH。
在一种具体的实施方式中，通信装置具体可以用于实现图7所述的实施例中第一终端设备执行的方法，该装置可以是第一终端设备本身，也可以是第一终端设备中的芯片或芯片组或芯片中用于执行相关方法功能的一部分。其中，通信模块1001，用于与其他终端设备进行通信。
处理模块1002，用于通过通信模块1001接收X个侧行数据，X为大于或等于1的整数；以及，通过通信模块1001发送Y个PSFCH，Y为大于或等于X的整数；其中，Y个PSFCH中第一PSFCH的 传输占用第一物理资源块PRB集合，Y个PSFCH中第二PSFCH的传输占用第二PSFCH对应的第二PRB集合；第一PRB集合包括N个PRB，N个PRB为公共PRB；第二PRB集合包括m个PRB；N为大于1的整数，m为大于或等于1的整数。
示例性的，Y个PSFCH为X个侧行数据对应的X个PSFCH，第一PSFCH为X个PSFCH中优先级最低的PSFCH。
示例性的，Y＝X+1，Y个PSFCH包括X个侧行数据对应的X个PSFCH和一个预配置或预定义的PSFCH，第一PSFCH为预配置或预定义的PSFCH。
示例性的，第一PSFCH在第一PRB集合中的任一PRB上的发送功率为将第一PSFCH的发送功率根据第一PRB集合包括的PRB总数进行等分得到。
示例性的，第二PSFCH在第二PRB集合中的任一PRB上的发送功率为将第二PSFCH的发送功率根据第二PRB集合包括的PRB总数进行等分得到。
示例性的，第一PRB集合包括一个或多个交错资源块中的全部或部分PRB。
示例性的，第一PSFCH的发送功率为将第一终端设备的最大发送功率根据X的取值进行等分得到的；或者，第一PSFCH的发送功率为根据待发送的至少一个PSFCH的优先级、PSFCH的最大发送个数、第一终端设备的最大发送功率中的至少一个确定，其中，至少一个PSFCH包括X个PSFCH。
本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，另外，在本申请各个实施例中的各功能模块可以集成在一个处理器中，也可以是单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。可以理解的是，本申请实施例中各个模块的功能或者实现可以进一步参考方法实施例的相关描述。
一种可能的方式中，通信装置可以如图11所示，该装置可以是通信设备或者通信设备中的芯片，其中该通信设备可以为上述实施例中的第一终端设备也可以是上述实施例中的第二终端设备。该装置包括处理器1101和通信接口1102，还可以包括存储器1103。其中，处理模块1002可以为处理器1101。通信模块1001可以为通信接口1102。
处理器1101，可以是一个CPU，或者为数字处理单元等等。通信接口1102可以是收发器、也可以为接口电路如收发电路等、也可以为收发芯片等等。该装置还包括：存储器1103，用于存储处理器1101执行的程序。存储器1103可以是非易失性存储器，比如硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)等，还可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)。存储器1103是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其它介质，但不限于此。
处理器1101用于执行存储器1103存储的程序代码，具体用于执行上述处理模块1002的动作，本申请在此不再赘述。通信接口1102具体用于执行上述通信模块1001的动作，本申请在此不再赘述。
可选的，上述通信装置还可以包括总线1104连接，其中，总线1104连接用于连接通信接口1102、处理器1101以及存储器1103。
本申请实施例中不限定上述通信接口1102、处理器1101以及存储器1103之间的具体连接介质。本申请实施例在图11中以存储器1103、处理器1101以及通信接口1102之间通过总线1104连接，总线在图11中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。总线可以分为地址总线、数据总线、控制总线等。为便于表示，图11中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
本发明实施例还提供了一种计算机可读存储介质，用于存储为执行上述处理器所需执行的计算机软件指令，其包含用于执行上述处理器所需执行的程序。
本申请实施例还提供一种侧行通信系统，包括用于实现图2所述的实施例中第一终端设备功能的通信装置和用于实现图2所述的实施例中其他终端设备功能的通信装置。
本申请实施例还提供一种侧行通信系统，包括用于实现图7所述的实施例中第一终端设备功能的通信装置和用于实现图7所述的实施例中其他终端设备功能的通信装置。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、 CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (26)

  1. 一种侧行通信方法，其特征在于，所述方法包括：
    接收X个侧行数据，所述X为大于或等于1的整数；
    发送所述X个侧行数据对应的X个物理层侧行链路反馈信道PSFCH；
    其中，所述X个PSFCH中的第一PSFCH的传输占用第一物理资源块PRB集合以及所述第一PSFCH对应的第二PRB集合；
    所述第一PRB集合包括N个PRB，所述N个PRB为公共PRB，所述第二PRB集合包括m个PRB，所述N为大于1的整数，所述m为大于或等于1的整数；
    所述第一PSFCH在所述第一PRB集合中任一PRB上的发送功率小于或等于在所述第二PRB集合中任一PRB上的发送功率。
  2. 如权利要求1所述的方法，其特征在于，所述第一PSFCH在所述第一PRB集合和所述第二PRB集合中的任一PRB上的发送功率为将所述第一PSFCH的发送功率根据所述第一PRB集合和所述第二PRB集合包括的PRB总数进行等分得到。
  3. 如权利要求1所述的方法，其特征在于，所述第一PSFCH在所述第一PRB集合上总的发送功率与在所述第二PRB集合上总的发送功率为根据所述第一PSFCH的发送功率和调整因子确定的。
  4. 如权利要求3所述的方法，其特征在于，所述第一PSFCH在所述第一PRB集合上总的发送功率满足如下公式：
    所述第一PSFCH在所述第二PRB集合上总的发送功率满足如下公式：
    其中，所述P1为所述第一PSFCH的发送功率，所述α1为所述调整因子，所述α1大于0且小于1。
  5. 如权利要求3所述的方法，其特征在于，所述第一PSFCH在所述第一PRB集合上总的发送功率满足如下公式：
    所述第一PSFCH在所述第二PRB集合上总的发送功率满足如下公式：
    其中，所述P1为所述第一PSFCH的发送功率，所述β1为所述调整因子。
  6. 如权利要求3所述的方法，其特征在于，所述第一PSFCH在所述第一PRB集合上总的发送功率满足如下公式：
    所述第一PSFCH在所述第二PRB集合上总的发送功率满足如下公式：
    其中，所述P1为所述第一PSFCH的发送功率，所述β2为所述调整因子。
  7. 如权利要求1-6任一项所述的方法，其特征在于，所述第一PRB集合包括一个交错资源块中的全部或部分PRB。
  8. 如权利要求1-7任一项所述的方法，其特征在于，所述X个PSFCH中的第二PSFCH占用所述第一PRB集合和所述第二PSFCH对应的第二PRB集合。
  9. 如权利要求8所述的方法，其特征在于，所述第一PSFCH的发送功率为将
    或者，所述第一PSFCH的发送功率为根据待发送的至少一个PSFCH的优先级、PSFCH的最大发送个数、终端设备的最大发送功率中的至少一个确定，其中，所述至少一个PSFCH包括所述X个PSFCH。
  10. 如权利要求1-7任一项所述的方法，其特征在于，所述X个PSFCH中的第二PSFCH的传输占用所述第二PSFCH对应的所述第二PRB集合。
  11. 如权利要求10所述的方法，其特征在于，所述第一PSFCH的发送功率为根据终端设备的最大发送功率、所述X个PSFCH占用的PRB总数以及所述第一PSFCH占用的PRB数量确定的。
  12. 如权利要求11所述的方法，其特征在于，所述第一PSFCH的发送功率P1满足如下公式：
    其中，所述P总为终端设备的最大发送功率。
  13. 如权利要求10-12任一项所述的方法，其特征在于，所述第一PSFCH为所述X个PSFCH中优先级最低的PSFCH。
  14. 一种侧行通信方法，其特征在于，所述方法包括：
    确定第一物理层侧行链路反馈信道PSFCH的传输占用的资源，所述第一PSFCH的传输占用的资源包括第一物理资源块PRB集合以及所述第一PSFCH对应的第二PRB集合；
    在所述第二PRB集合上接收所述第一PSFCH；
    其中，第一PRB集合包括N个PRB，所述N个PRB为公共PRB，第二PRB集合包括m个PRB，所述N为大于1的整数，所述m为大于或等于1的整数。
  15. 一种侧行通信方法，其特征在于，所述方法包括：
    接收X个侧行数据，所述X为大于或等于1的整数；
    发送Y个物理层侧行链路反馈信道PSFCH，所述Y为大于或等于X的整数；
    其中，所述Y个PSFCH中第一PSFCH的传输占用第一物理资源块PRB集合，
    所述Y个PSFCH中第二PSFCH的传输占用所述第二PSFCH对应的第二PRB集合；
    所述第一PRB集合包括N个PRB，所述N个PRB为公共PRB；所述第二PRB集合包括m个PRB；所述N为大于1的整数，所述m为大于或等于1的整数。
  16. 如权利要求15所述的方法，其特征在于，所述Y个PSFCH为所述X个侧行数据对应的X个PSFCH，所述第一PSFCH为所述X个PSFCH中优先级最低的PSFCH。
  17. 如权利要求15所述的方法，其特征在于，Y＝X+1，所述Y个PSFCH包括所述X个侧行数据对应的X个PSFCH和一个预配置或预定义的PSFCH，所述第一PSFCH为预配置或预定义的PSFCH。
  18. 如权利要求15-17任一项所述的方法，其特征在于，所述第一PSFCH在所述第一PRB集合中的任一PRB上的发送功率为将所述第一PSFCH的发送功率根据所述第一PRB集合包括的PRB总数进行等分得到。
  19. 如权利要求15-18任一项所述的方法，其特征在于，所述第二PSFCH在所述第二PRB集合中的任一PRB上的发送功率为将所述第二PSFCH的发送功率根据所述第二PRB集合包括的PRB总数进行等分得到。
  20. 如权利要求15-19任一项所述的方法，其特征在于，所述第一PRB集合包括一个或多个交错资源块中的全部或部分PRB。
  21. 如权利要求15-20任一项所述的方法，其特征在于，所述第一PSFCH的发送功率为将终端设备的最大发送功率根据所述X的取值进行等分得到的；
    或者，所述第一PSFCH的发送功率为根据待发送的至少一个PSFCH的优先级、PSFCH的最大发送个数、终端设备的最大发送功率中的至少一个确定，其中，所述至少一个PSFCH包括所述X个PSFCH。
  22. 一种侧行通信方法，其特征在于，所述方法包括：
    确定第一物理层侧行链路反馈信道PSFCH的传输占用的资源，所述第一PSFCH的传输占用的资源为第一物理资源块PRB集合；
    在所述第一PRB集合上接收所述第一PSFCH；
    其中，所述第一PRB集合包括N个PRB，所述N个PRB为公共PRB；所述N为大于1的整数。
  23. 一种侧行通信装置，其特征在于，所述装置包括用于实现如权利要求1-13任一项所述的方法的模块；或者，所述装置包括用于实现如权利要求14所述的方法的模块；或者，所述装置包括用于实现如权利要求15-21任一项所述的方法的模块；或者，所述装置包括用于实现如权利要求22所述的方法的模块。
  24. 一种侧行通信装置，其特征在于，包括：
    存储器，用于存储指令；
    处理器，用于从所述存储器中调用并运行所述指令，使得所述通信装置执行如权利要求1-13中任一项所述的方法；或者执行如权利要求14所述的方法；或者执行如权利要求15-21中任一项所述的方法；或者执行如权利要求22所述的方法。
  25. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有指令，当所述指令在计算机上被调用执行时，使得所述计算机执行如权利要求1-13中任一项所述的方法；或者执行如权 利要求14所述的方法；或者执行如权利要求15-21中任一项所述的方法；或者执行如权利要求22所述的方法。
  26. 一种计算机程序产品，其特征在于，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如权利要求1-13中任一项所述的方法；或者执行如权利要求14所述的方法；或者执行如权利要求15-21中任一项所述的方法；或者执行如权利要求22所述的方法。
PCT/CN2023/124547 2022-11-04 2023-10-13 一种侧行通信方法及装置 WO2024093649A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211380062.0A CN117997492A (zh) 2022-11-04 2022-11-04 一种侧行通信方法及装置
CN202211380062.0 2022-11-04

Publications (1)

Publication Number Publication Date
WO2024093649A1 true WO2024093649A1 (zh) 2024-05-10

Family

ID=90889955

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/124547 WO2024093649A1 (zh) 2022-11-04 2023-10-13 一种侧行通信方法及装置

Country Status (2)

Country Link
CN (1) CN117997492A (zh)
WO (1) WO2024093649A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111294808A (zh) * 2020-02-13 2020-06-16 中国信息通信研究院 一种边链路反馈信道资源确定方法
CN111435909A (zh) * 2019-01-11 2020-07-21 华为技术有限公司 发送和接收反馈信道的方法以及装置
US20210391951A1 (en) * 2019-05-03 2021-12-16 Lg Electronics Inc. Sidelink harq feedback for groupcast transmission
CN114009070A (zh) * 2021-09-27 2022-02-01 北京小米移动软件有限公司 一种反馈信息传输方法、装置及存储介质
WO2022222106A1 (zh) * 2021-04-22 2022-10-27 Oppo广东移动通信有限公司 传输物理侧行反馈信道psfch的方法和终端设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111435909A (zh) * 2019-01-11 2020-07-21 华为技术有限公司 发送和接收反馈信道的方法以及装置
US20210391951A1 (en) * 2019-05-03 2021-12-16 Lg Electronics Inc. Sidelink harq feedback for groupcast transmission
CN111294808A (zh) * 2020-02-13 2020-06-16 中国信息通信研究院 一种边链路反馈信道资源确定方法
WO2022222106A1 (zh) * 2021-04-22 2022-10-27 Oppo广东移动通信有限公司 传输物理侧行反馈信道psfch的方法和终端设备
CN114009070A (zh) * 2021-09-27 2022-02-01 北京小米移动软件有限公司 一种反馈信息传输方法、装置及存储介质

Also Published As

Publication number Publication date
CN117997492A (zh) 2024-05-07

Similar Documents

Publication Publication Date Title
US20210329568A1 (en) Signal sending method, priority configuration method, and device
CN108365934A (zh) 无线通信方法和无线通信设备
US10873430B2 (en) Signal sending method and apparatus
WO2021017792A1 (zh) 一种反馈信息的传输方法及终端装置
WO2021027815A1 (zh) 一种反馈信息传输方法及装置
WO2022011699A1 (zh) 一种通信方法及侧行设备
CN113647163B (zh) 一种通信方法及设备
WO2023273743A1 (zh) 一种侧行通信方法及装置
WO2024093649A1 (zh) 一种侧行通信方法及装置
WO2022222106A1 (zh) 传输物理侧行反馈信道psfch的方法和终端设备
WO2022077453A1 (zh) 一种通信方法及通信装置
WO2020020049A1 (zh) 电子装置、无线通信方法和计算机可读介质
CN116420360A (zh) 侧行传输方法和通信装置
WO2023093531A1 (zh) 一种通信方法及装置
WO2024067429A1 (zh) 通信方法及通信装置
WO2023029976A1 (zh) 一种通信方法及装置
WO2024065707A1 (zh) 侧行通信方法、装置、设备、存储介质及程序产品
WO2024099166A1 (zh) 侧行链路通信方法和装置
WO2024032418A1 (zh) 一种通信方法及装置
WO2024067092A1 (zh) 通信方法和装置
US20240073868A1 (en) Wireless communication method, and device
WO2020156339A1 (zh) 一种通信方法及装置
WO2024130651A1 (zh) 侧行控制信息的发送方法、装置、设备及介质
WO2021146968A1 (zh) 一种通信方法及装置
WO2024093832A1 (zh) 一种资源选择方法及装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23884581

Country of ref document: EP

Kind code of ref document: A1