WO2022104711A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2022104711A1
WO2022104711A1 PCT/CN2020/130473 CN2020130473W WO2022104711A1 WO 2022104711 A1 WO2022104711 A1 WO 2022104711A1 CN 2020130473 W CN2020130473 W CN 2020130473W WO 2022104711 A1 WO2022104711 A1 WO 2022104711A1
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WIPO (PCT)
Prior art keywords
terminal device
information
resource
resource pool
communication
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PCT/CN2020/130473
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English (en)
French (fr)
Inventor
刘荣宽
张鹏
许华
彭文杰
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.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2020/130473 priority Critical patent/WO2022104711A1/zh
Priority to CN202080105834.2A priority patent/CN116325831A/zh
Publication of WO2022104711A1 publication Critical patent/WO2022104711A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Definitions

  • the present application relates to the field of wireless communication technologies, and particularly designs a communication method and device.
  • Wireless relay communication is a form of wireless communication networking, which can effectively expand the coverage of wireless networks.
  • the remote node When the remote node is out of the signal coverage of the data sending node, the data from the data sending node can be obtained through the relay node. Similarly, when the remote node is outside the signal coverage of the data receiving node, the remote node can send data to the data receiving node through the relay node.
  • the remote node and the relay node can realize mutual discovery and discovery through discovery, so as to establish a relay connection between the remote node and the relay node.
  • the discovery process in the long term evolution (LTE) technology needs to be realized through the signaling interaction of the physical sidelink discovery channel (PSDCH).
  • PSDCH physical sidelink discovery channel
  • the PSDCH is not set under the new radio (NR) technology of the fifth generation (5G) mobile communication, and the discovery process under the LTE technology cannot be followed, resulting in a low reliability of the discovery process.
  • NR new radio
  • the present application provides a communication method and device to improve the reliability of the discovery process.
  • an embodiment of the present application provides a method for determining transmission resources.
  • the method may be performed by a first terminal device, a component in the first
  • the components such as processors, chips or systems of chips, etc.
  • the first terminal device and/or the second terminal device supports PC5 interface communication.
  • the second terminal device can receive the first information from the first terminal device through the first resource, the first resource belongs to the first resource pool, and the resources in the first resource pool are managed by the physical side
  • the resource occupied by the link shared channel PSSCH or the physical sidelink control channel PSCCH, the first resource pool is a resource pool used for determining a candidate relay device.
  • the second terminal device may also determine whether to use the first terminal device as a candidate relay device in response to the first information.
  • the second terminal device when the second terminal device receives the first information transmitted by the first terminal device through the first resource, it can determine whether to use the first terminal device as a candidate relay device in response to the first information, wherein the first terminal device is used as a relay device candidate.
  • a resource is a resource in the first resource pool, and the resource in the first resource pool is a resource occupied by PSSCH or PSCCH. Based on this method, the reliability of the discovery process can be improved.
  • the second terminal device may, in response to the first information, perform signal measurement and filtering on the channel carrying the first information to obtain the received signal strength.
  • the second terminal device may also determine whether to use the first terminal device as a candidate relay device according to the received signal strength.
  • the second terminal device can perform signal measurement at the physical layer in response to the first information, so as to improve the discovery efficiency and reduce the delay of the discovery process.
  • the filtering includes medium access control MAC layer filtering (or referred to as layer 2 filtering) and/or radio resource control RRC layer filtering (or referred to as layer 3 filtering).
  • the second terminal device may determine to use the first terminal device as a candidate relay device according to the received signal strength.
  • the first threshold when the second terminal device is located within the coverage of the network device, the first threshold is a, and when the second terminal device is located outside the coverage of the network device, The first threshold is b, and a is greater than b.
  • two first thresholds a and b can be set for the second terminal device, and the second terminal device selects the first threshold according to whether it is currently within the coverage of the network device.
  • a larger first threshold is selected to improve the success rate of establishing a relay connection.
  • a smaller first threshold is selected to improve the quality of relay communication.
  • the first resource is a resource occupied by PSSCH; the transmission code rate of the first information is not higher than the set code rate, and/or the transmission power of the first information is not lower than Set power.
  • the first resource is a resource occupied by the PSCCH, and the transmission power of the first information is not lower than the set power.
  • the second terminal device may receive second information from the network device, where the second information is used to indicate the first resource pool.
  • an embodiment of the present application provides a method for determining transmission resources.
  • the method may be performed by a first terminal device, a component in the first terminal device (such as a processor, a chip or a chip system, etc.), a second terminal device, or a first terminal device.
  • the components such as processors, chips or systems of chips, etc.
  • the first terminal device and/or the second terminal device supports PC5 interface communication.
  • the first terminal device can send the first information through the first resource, the first resource belongs to the first resource pool, and the resources in the first resource pool are the physical sidelink shared channel PSSCH or the physical The resources occupied by the sidelink control channel PSCCH, the first resource pool is a resource pool used for determining candidate relay devices.
  • the first resource is a resource occupied by PSSCH; the transmission code rate of the first information is not higher than the set code rate, and/or the transmission power of the first information is not lower than Set power.
  • the first resource is a resource occupied by the PSCCH, and the transmission power of the first information is not lower than the set power.
  • the first terminal device may further receive second information from the network device, where the second information is used to indicate the first resource pool.
  • an embodiment of the present application provides a communication apparatus, which can implement the method implemented by the first terminal device in the first aspect or any possible design thereof.
  • the apparatus comprises corresponding units or components for carrying out the above-described method.
  • the units included in the apparatus may be implemented by software and/or hardware.
  • the apparatus may be, for example, a first terminal device, or a component or a baseband chip, a chip system, or a processor that can support the implementation of the above method in the first terminal device.
  • the communication device may include modular components such as a transceiver unit (or a communication module, a transceiver module) and a processing unit (or a processing module), and these modules may implement the first 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, a radio frequency circuit, and the like, and the processing unit may be a processor, such as a baseband chip.
  • the transceiver unit may be a radio frequency unit, and the processing unit may be a processor.
  • the transceiver unit can be an input and output interface of the chip system, and the processing unit can be a processor of the chip system, such as a central processing unit (central processing unit, CPU).
  • the transceiving unit may be configured to perform the actions of receiving and/or sending performed by the first terminal device in the first aspect or any possible design thereof.
  • the processing unit may be configured to perform actions other than reception and transmission performed by the first terminal device in the first aspect or any possible design thereof.
  • the communication device may include a transceiver module and/or a communication module.
  • the communication device may include a processor and/or a transceiver.
  • the communication device may also include a memory.
  • an embodiment of the present application provides a communication apparatus, which can implement the method implemented by the second terminal device in the first aspect or any possible design thereof.
  • the apparatus comprises corresponding units or components for carrying out the above-described method.
  • the units included in the apparatus may be implemented by software and/or hardware.
  • the apparatus may be, for example, a second terminal device, or a component or a baseband chip, a chip system, or a processor that can support the implementation of the above method in the second terminal device.
  • the communication device may include modular components such as a transceiver unit (or a communication module, a transceiver module) and a processing unit (or a processing module), and these modules may implement the first 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, a radio frequency circuit, and the like, and the processing unit may be a processor, such as a baseband chip.
  • the transceiver unit may be a radio frequency unit, and the processing unit may be a processor.
  • the transceiver unit may be an input/output interface of the system-on-chip, and the processing unit may be a processor of the system-on-chip, such as a CPU.
  • the transceiving unit may be configured to perform the actions of receiving and/or sending performed by the second terminal device in the first aspect or any possible design thereof.
  • the processing unit may be configured to perform actions other than reception and transmission performed by the second terminal device in the first aspect or any possible design thereof, such as determining the first resource from the first resource pool.
  • the communication device may include a transceiver module and/or a communication module.
  • the communication device may include a processor and/or a transceiver.
  • the communication device may also include a memory.
  • a communication system in a fifth aspect, includes the communication apparatus shown in the third aspect and the fourth aspect.
  • a computer-readable storage medium is provided, the computer-readable storage medium is used to store computer instructions, and when the computer instructions are executed on a computer, the computer is made to execute the above-mentioned first to second aspects or any of them.
  • a seventh aspect provides a computer program product comprising instructions, the computer program product is used to store computer instructions, when the computer instructions are executed on a computer, the computer is made to execute the above-mentioned first to second aspects or any one of them method shown in a possible implementation.
  • a circuit is provided, the circuit is coupled to a memory, the circuit is used to perform the method shown in the above-mentioned first aspect to the second aspect or any one of possible implementations thereof.
  • the circuit may include a chip circuit, a chip or a chip system, or the like.
  • FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the architecture of another communication system provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of the architecture of another communication system provided by an embodiment of the present application.
  • Fig. 4 is a kind of step schematic diagram of discovery process
  • Fig. 6 is the step schematic diagram of another kind of discovery process
  • FIG. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 10 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 11 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • the resource determination method provided by the embodiment of the present application can be applied to the communication scenario of sideline transmission shown in FIG. 1 .
  • the communication scenario may include UE1 (or referred to as a first terminal device) and UE2 (or referred to as a second terminal device).
  • UE1 and/or UE2 may be a terminal device or components such as a chip, a chip system, a module, a circuit or a unit in the terminal device.
  • the terminal device may be a terminal (terminal), a mobile station (mobile station, MS), a mobile terminal (mobile terminal), and the like.
  • the terminal device in this embodiment of the present application may be a mobile phone (or a "cellular" phone), a computer with a mobile terminal, a smart vehicle, a smart device related to the Internet of Vehicles (such as smart street lights, etc.), a roadside unit (road side unit, RSU), wearable device, etc.
  • the terminal device can also be a portable, pocket-sized, hand-held, computer built-in or vehicle-mounted mobile device, such as an on-board unit (OBU).
  • the terminal device can also be a communication chip with a communication module, such as a chip in a handheld or vehicle-mounted device.
  • terminal equipment may be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, unmanned vehicles, wearable devices, terminal devices in future 5G networks or in future evolved PLMN networks terminal device, etc.
  • Terminal devices can be deployed on land, including indoors or outdoors, held by users or in vehicles; terminal devices can also be deployed on water (such as ships, etc.); terminal devices can also be deployed in the air (such as aircraft, balloons and satellites) superior).
  • D2D device-to-device
  • the application of D2D technology can reduce the burden of cellular networks, reduce battery power consumption of user equipment, increase data rates, and can well meet the needs of proximity services.
  • the D2D technology allows direct discovery and direct communication between multiple D2D-enabled user equipment (or terminal equipment) with or without network infrastructure.
  • the application scenario of the Internet of Vehicles based on D2D technology is proposed.
  • UE1 and UE2 shown in FIG. 1 may be configured to support sidelink communication, for example, SL communication may be performed between UE1 and UE2 through a PC5 interface.
  • UE1 and/or UE2 can also communicate with network equipment (such as a base station) (for example, communicate through a universal user to network interface (universal user to network interface, Uu interface)), and accept network services provided by the network equipment .
  • network equipment such as a base station
  • Uu interface universal user to network interface
  • the resources used for the SL communication between UE1 and UE2 can be scheduled by the network device through sidelink control information (SCI), or can be selected by UE1 and/or UE2 through perception. Therefore, the network device can be used for V2X communication. It is not necessary. In the future, the V2X communication scheduled by the network device can be called the V2X communication with the participation of the network device, and the V2X communication that does not need to be scheduled by the network device can be called the V2X communication without the
  • wireless relay communication supports UE1 to obtain services provided by network equipment or UE through UE2 as shown in Figure 1.
  • UE2 is the relay node
  • UE1 is the remote node
  • the network equipment or UE is the data receiving node and/or the data receiving node. or data sending node.
  • a network device or UE When a network device or UE sends data to UE1 through a relay node, the network device or UE is a data sending node (or called a source node), and UE1 can be called a data receiving node (or a destination node) ); when UE1 sends data to a network device or UE through a relay node, UE1 can be called a data sending node (or called a source node), and the network device or UE is a data receiving node (or called a sink node).
  • a communication system may include a remote UE (remote UE), a relay UE (relay UE), and a network equipment.
  • the network device when the network device sends data to the remote UE, the network device acts as the source node, the relay UE acts as the relay node, and the remote UE acts as the sink node; when the remote UE sends data to the network device, the remote UE acts as the source node.
  • the source node, the relay UE acts as a relay node, and the network device acts as a sink node.
  • the interface between the remote UE and the relay UE is the PC5 interface
  • the interface between the relay UE and the network device is the Uu interface.
  • the relay UE can help the remote UE to access the network device, so that the remote UE obtains the network service provided by the network device, where the network service includes but is not limited to data transmission between the remote UE and the network device.
  • the access network device refers to a device that provides a network access function, such as a radio access network (radio access network, RAN) base station, and the like.
  • the network equipment may specifically include a base station (base station, BS), or include a base station and a radio resource management device for controlling the base station, and the like.
  • the network equipment may also include a relay station (relay device), an access point, a base station in a future 5G network, a base station in a future evolved PLMN network, or an NR base station, and the like.
  • the network device can be a wearable device or a vehicle-mounted device. Network equipment is implemented by RSU.
  • the network device can also be a chip with a communication module. It should be understood that in this application, the network device may support Uu interface communication, for example, configure UE1 and/or UE2 with information such as transmission resources, SL parameters or perception parameters for SL communication through the Uu interface. Network equipment can access the core network (or core network equipment), such as the 5G core network, to obtain services on the core network side. It should be understood that the network device may be a core network device or a network node other than the core network device, or the like.
  • a communication system may include a remote UE, a relay UE, and a UE.
  • the UE sends data to the remote UE, the UE acts as a source node, the relay UE acts as a relay node, and the remote UE acts as a sink node;
  • the remote UE sends data to the UE, the remote UE acts as a source node , the relay UE acts as a relay node, and the UE acts as a sink node.
  • the interface between the remote UE and the relay UE is the PC5 interface
  • the interface between the relay UE and the UE is the PC5 interface.
  • the relay UE can help the remote UE to access the UE, so that the remote UE obtains network services, where the network service includes but is not limited to data transmission between the remote UE and the UE.
  • the functions of the remote UE, the relay UE and/or the UE in this application may be implemented by a terminal device or components in the terminal device.
  • a terminal device for the form of the terminal device, reference may be made to the foregoing description of the terminal device.
  • the discovery process between the relay node and the remote node is shown in, for example, FIG. 4 or FIG. 5 .
  • Figure 4 shows the discovery process in mode A.
  • the relay UE sends an announcement message (announcement message), so that the remote UE that monitors the announcement message (such as the remote UE1 and/or the remote UE2 in FIG. 4 ) can discover the relay
  • the UE may subsequently establish a relay connection between the remote UE and the relay UE, and the relay connection may be used to forward data, information, messages or signaling, etc. from or to the remote UE.
  • Figure 5 shows the discovery process in mode B.
  • the remote UE sends a solicitation message (solicitation message).
  • the relay UE (relay UE1 and/or relay UE2 shown in FIG. 5 ) can provide data forwarding to the remote UE, The relay UE may send a response message to the remote UE, and subsequently a relay connection may be established between the remote UE and the relay UE.
  • direct discovery of the UE can be realized.
  • UE-1 sends a direct communication request message, which can be detected by terminal devices such as UE-2 and UE-3.
  • terminal devices such as UE-2 and UE-3.
  • UE-2 determines that a relay connection can be established with UE-1 according to the message
  • UE-2 can establish a communication between UE-2 and UE-1 by sending a direct communication accept message to UE-1.
  • the direct communication connection between the remote UE and the relay UE can be established.
  • the direct communication request message and the direct communication accept message are carried on the PDSCH.
  • the signaling for discovery involved in the processes shown in FIGS. 4 to 6 above is carried in the PSDCH, where the signaling for discovery is, for example, an announcement message, a request message, or a direct communication request message. Therefore, after the relay node or the remote node receives the signaling for discovery carried on the PSDCH, a relay connection between the relay node and the remote node can be established according to the discovery process.
  • the PSDCH is not defined in the NR technology, the discovery process between the relay node and the remote node under NR needs to be redesigned.
  • an embodiment of the present application provides a communication method.
  • the communication method may be implemented by a relay node and/or a remote node.
  • the remote node is, for example, UE1 shown in FIG. 1 , the remote UE shown in FIG. 2 , or the remote UE shown in FIG. 3 .
  • the relay node is, for example, the UE2 shown in FIG. 1 , the relay UE shown in FIG. 2 , or the relay UE shown in FIG. 3 .
  • relay node and/or the remote node may be implemented by a terminal device.
  • FIG. 7 shows a possible schematic structural diagram of a terminal device, and the structure may include a processing module 710 and a transceiver module 720 .
  • the structure shown in FIG. 7 may be a terminal device, a chip applied in the terminal device, or other combined devices, components (or components), etc. having the functions of the terminal device shown in this application.
  • the transceiver module 720 may be a transceiver, and the transceiver may include an antenna, a radio frequency circuit, etc.
  • the processing module 710 may be a processor, such as a baseband processor, and the baseband processor may include one or more central Processing unit (central processing unit, CPU).
  • CPU central processing unit
  • the transceiver module 720 may be a radio frequency unit, and the processing module 710 may be a processor, such as a baseband processor.
  • the transceiver module 720 may be an input/output interface of a chip (eg, a baseband chip), and the processing module 710 may be a processor of the chip system, which may include one or more central processing units.
  • the processing module 710 in this embodiment of the present application may be implemented by a processor or a circuit component related to the processor, and the transceiver module 720 may be implemented by a transceiver or a circuit component related to the transceiver.
  • the processing module 710 may be configured to perform all operations performed by the relay node and/or the remote node in any embodiment of the present application except for the transceiving operations, such as processing operations, and/or to support the operations described herein.
  • Other processes of the described techniques such as generating messages, information, and/or signaling sent by transceiving module 720, and processing messages, information, and/or signaling received by transceiving module 720.
  • Transceiver module 720 may be used to perform all receive and transmit operations performed by the relay node and/or remote node in any of the embodiments of the present application, and/or to support other processes described herein, such as data sending and/or receiving.
  • the transceiver module 720 can be a functional module, which can perform both sending and receiving operations.
  • the transceiver module 720 can be used to perform all sending operations and/or sending operations performed by the relay node and/or the remote node.
  • the transceiver module 720 can be considered as a sending module, and when performing a receiving operation, the transceiver module 720 can be considered as a receiving module; alternatively, the transceiver module 720 can also be two functional modules.
  • the module 720 can be regarded as a general term for these two functional modules, which are respectively a sending module and a receiving module.
  • the sending module is used to complete the sending operation.
  • the receiving module is used to complete the receiving operation
  • the receiving module can be used to perform all the receiving operations performed by the relay node and/or the remote node.
  • FIG. 8 shows a schematic structural diagram of another terminal device, which is used to perform the actions performed by the relay node and/or the remote node provided by the embodiments of the present application. Easy to understand and easy to illustrate.
  • the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control terminal equipment, execute software programs, and process data of software programs.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal equipment may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • FIG. 8 only one memory and processor are shown in FIG. 8 . In an actual end device product, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or a storage device or the like.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.
  • the antenna and the radio frequency circuit with the transceiver function may be regarded as the transceiver unit of the terminal device (the transceiver unit may be a functional unit, and the function unit can realize the sending function and the receiving function; alternatively, the transceiver unit may also be It includes two functional units, namely a receiving unit capable of realizing a receiving function and a transmitting unit capable of realizing a transmitting function), and a processor with a processing function is regarded as a processing unit of the terminal device. As shown in FIG. 8 , the terminal device includes a transceiver unit 810 and a processing unit 820 .
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, or the like.
  • the processing unit may also be referred to as a processor, a processing single board, a processing module, a processing device, and the like.
  • the device for implementing the receiving function in the transceiver unit 810 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 810 may be regarded as a transmitting unit, that is, the transceiver unit 810 includes a receiving unit and a transmitting unit.
  • the transceiver unit may also sometimes be referred to as a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may also sometimes be referred to as a receiver, receiver, or receiving circuit, or the like.
  • the transmitting unit may also sometimes be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like.
  • transceiver unit 810 may correspond to the transceiver module 720 , or the transceiver module 720 may be implemented by the transceiver unit 810 .
  • Transceiver unit 810 is used to perform transmission and reception operations of the relay node and/or remote node in the embodiments shown in the present application, and/or to support other processes of the techniques described herein.
  • the processing unit 820 may correspond to the processing module 710 , or in other words, the processing module 710 may be implemented by the processing unit 820 .
  • the processing unit 820 is configured to perform other operations of the relay node and/or the remote node in the embodiment shown in the present application except for the sending and receiving operations, for example, is configured to perform the operation performed by the relay node and/or the remote node in the embodiment shown in the present application. All operations performed by a node other than receiving and transmitting, and/or other processes used to support the techniques described herein.
  • the communication method provided by the embodiment of the present application may be implemented by a first terminal device and a second terminal device.
  • the structures of the first terminal device and the second terminal device are shown in FIG. 7 and/or FIG. 8 .
  • the transceiving module 720 and/or the transceiving unit 810 may be configured to perform the sending operation and the receiving operation performed by the first terminal device and/or the second terminal device in the communication method.
  • the processing module 710 and/or the processing unit 820 may be configured to perform processing operations performed by the first terminal device and/or the second terminal device and/or all operations except receiving and sending in the communication method.
  • the method may include the following steps:
  • a first terminal device sends first information through a first resource, where the first resource belongs to a first resource pool, the first resource pool is a resource pool used to determine a candidate relay device, and the resources included in the first resource pool is the resource occupied by the physical sidelink shared channel (PSSCH) or the physical sidelink control channel (PSCCH). That is, the first resource is a resource occupied by the PSSCH or the PSCCH in the first resource pool, and the first information is carried on the PSSCH or the PSCCH.
  • PSSCH physical sidelink shared channel
  • PSCCH physical sidelink control channel
  • the first resource pool may be a preconfigured resource pool, or may be a resource pool configured by an access network device and/or a core network device.
  • the first resource pool may be a protocol-defined or pre-configured resource pool for determining candidate relay devices.
  • the second terminal device may receive second information, where the second information is used to configure the first resource pool. It should be understood that in this application, the first terminal device and the second terminal device need to be configured with the same first resource pool.
  • the first resource pool may be the resource pool of the discovery sender
  • the first resource pool may be the resource pool of the discovery receiver.
  • the first resource pool is configured by a network device (a network device such as a base station) (or a core network device), a possible implementation manner is:
  • the network device may configure the terminal device with the configuration of the resource pool of the sender and/or the configuration of the resource pool of the receiver.
  • the resources in the resource pool of the sender and the resource pool of the receiver are the same, and the resource pool of the sender and the resource pool of the receiver are the first resource pool.
  • the sender resource pool and the receiver resource pool are different from the resource pool (communication resource pool) used for performing the communication function of the first terminal device and/or the second terminal device configured by the network device.
  • the resource pool for performing the communication function is referred to as the second resource pool.
  • the resources included in the second resource pool are resources occupied by PSSCH or PSCCH.
  • the first terminal device can send data, information, signaling or messages to the second terminal device through the second resource pool.
  • the second terminal device may send data, information, signaling or messages to the first terminal device through the second resource pool.
  • PSSCH can be used to transmit data, information, signaling or messages between UEs. It should be understood that a message (or information, signaling or message) transmitted by PSSCH may be referred to as a PSCCH message (or information, signaling or message).
  • the PSCCH may be used to carry control information for scheduling PSSCH messages (or information, signaling or messages), such as sidelink control information (SCI).
  • SCI sidelink control information
  • the second terminal device receives the first information.
  • the second terminal device determines whether to use the first terminal device as a candidate relay device in response to the first information.
  • the second terminal device when the second terminal device receives the first information transmitted by the first terminal device through the first resource, it can determine whether to use the first terminal device as a candidate relay device in response to the first information. Based on this method, the reliability of the discovery process can be improved.
  • the second terminal device does not need to parse the content of the first information, but only needs to know that the first information is a resource borne in the first resource pool, and then trigger the determination of whether to select the first terminal device as a candidate following the action of the device.
  • the process of identifying the resource from the first information can be implemented by the physical layer of the second terminal device.
  • the physical layer of the second terminal device can trigger the determination of whether to use the first terminal device as a candidate relay. The action of the device improves the discovery efficiency.
  • the first terminal device may use a low transmission code rate in S101 to send the first information, In other words, the code transmission rate of the first information is not higher than the set code rate; or, the first information is transmitted by using a high transmission power, or the transmission power of the first information is not lower than the set power.
  • the first information when the first information is sent through the PSSCH, the first information can be sent by using a code rate not higher than the set code rate, which can be defined by the protocol or decided by the first terminal device, so as to improve the reception of the first information. time reliability.
  • MCS modulation and coding scheme
  • the network device configures the first terminal device and the second terminal device with a modulation and coding scheme (modulation and coding scheme, MCS) list (table) for sideline transmission (for example, the list is denoted as sl-MCS-Table)
  • MCS modulation and coding scheme
  • the first terminal device only uses the lowest-order modulation and coding scheme in the sl-MCS-Table (or any one of the first n lower-order modulation and coding schemes, where n is a positive integer) to send the first information.
  • the first terminal device may use the MCS corresponding to the smallest index (or any one of the first n smaller indices, where n is a positive integer) in the configured M
  • the first information when the first information is sent through the PSSCH, the first information can be sent by using a higher transmit power as determined by the protocol or determined by the first terminal device, so as to improve the reliability when the first information is received.
  • the transmit power of the first information may be higher than the transmit power when the first terminal device sends the PSSCH message through the second resource pool.
  • the configuration information of the first resource pool includes power control configuration information of the first information in the first resource pool, and the configuration information of the first resource pool can be used to configure the first resource pool.
  • the power control configuration information of the first information in the first resource pool includes a transmit power offset value X, and the defined transmit power offset value is X, where X ⁇ 0, where X represents the transmit power of the first information in the first resource pool The offset value compared to the transmission power of the PSSCH message carried in the second resource pool.
  • the transmission power control configuration of the first information is the same as the transmission power control configuration of the PSSCH message carried in the second resource pool, that is, under the same conditions, the first terminal device sends the first information
  • the transmission power of the first terminal device may be the same as the transmission power of the PSSCH message carried in the second resource pool by the first terminal device; when the offset value X>0, the transmission power of the PSSCH in the first resource pool is higher than that carried in the second resource pool under the same conditions.
  • the transmission power of PSSCH messages in the second resource pool may be the same as the transmission power of the PSSCH message carried in the second resource pool by the first terminal device; when the offset value X>0, the transmission power of the PSSCH in the first resource pool is higher than that carried in the second resource pool under the same conditions.
  • the first information when the first information is sent through the PSCCH, the first information can be sent by using a higher transmit power (such as a transmit power greater than the set power) as defined by the protocol or by the decision of the first terminal device, so as to improve the reliability when the first information is received. reliability.
  • the transmit power of the first information may be higher than the transmit power when the first terminal device sends the PSCCH message through the second resource pool.
  • the first terminal device may periodically send the first information.
  • the period and start time of the periodically sent first information may be configured by a network device or a core network device, or may be pre-configured.
  • the second terminal device may become a remote UE, or in other words, the second terminal device enters a remote UE state.
  • the second terminal device becomes the remote UE:
  • the frequency used by the second terminal device for SL communication is out of coverage.
  • the frequency used by the UE for SL communication is out of coverage, which means that the UE cannot meet the communication requirement on the frequency used by the SL.
  • the second terminal device has a service frequency for SL communication, and the RSRP measurement value of the cell or the primary cell where the second terminal device resides is lower than the threshold.
  • the threshold is represented as threshHigh.
  • the threshold can be configured by the network or determined by pre-configuration.
  • the second terminal device may, in response to the first information, measure and filter the channel carrying the first information to obtain the received signal strength, and determine whether to send the first terminal according to the received signal strength.
  • device as a candidate relay device.
  • the first terminal device can identify the first information by the physical layer, so the physical layer can measure the channel signal in response to the first information without waiting for a measurement instruction from a higher layer, which can reduce the delay of the discovery process.
  • the second terminal device may measure the PSSCH-reference signal received power (reference signal received power, RSRP), and the PSSCH-RSRP is the demodulation reference signal (demodulation reference signals) of the PSSCH.
  • RSRP reference signal received power
  • DMRS demodulation reference signal
  • RE resource element
  • the second terminal device may measure the PSCCH-RSRP, where the PSCCH-RSRP is the linear average of the resource element power occupied by the DMRS of the PSCCH.
  • the above process of obtaining the measurement result may be implemented by the physical layer of the second terminal device.
  • the second terminal device may perform filtering according to the pre-configured or configured filtering parameters at a high layer according to the measurement result to obtain a filtering result, where the filtering result is used to indicate the received signal strength.
  • the upper layer may include a protocol layer above a physical layer such as a media access control (media access control, MAC) layer and/or a radio resource control (radio resource control, RRC) layer.
  • the measurement result may be a measurement result determined according to the newly received first information. For example, if the second terminal device receives the periodically sent first information, the second terminal device can obtain a periodic measurement result according to the periodically received first information, and the second terminal device determines according to the latest measurement result the filter result.
  • the filtering result F n obtained after filtering and the measurement result Mn satisfies:
  • M n is the latest measurement result of the physical layer for the channel of the first resource
  • F n is the updated filtering result obtained according to the latest measurement result
  • F n-1 is the old filtering measurement result
  • the upper layer may include layer 2 and/or layer 3.
  • the filtering process can be called layer 2 filtering, and when the high layer is layer 3, the filtering process can be called layer 3 filtering.
  • the above layer 2 may also be replaced by a MAC layer
  • layer 3 may be replaced by an RRC layer, or in other words, layer 2 filtering may also be referred to as MAC layer filtering, and layer 3 filtering may also be referred to as RRC layer filtering.
  • the second terminal device may use the first terminal device as a candidate relay device according to the received signal strength.
  • the first threshold may be configured by a network device or a core network device, or may be pre-configured.
  • the first threshold may be labeled RxLevMin.
  • the first threshold when the second terminal device is located within the coverage of the network device, the first threshold may be represented as a; when the second terminal device is located outside the coverage of the network device, the first threshold is b, and a is greater than b. Therefore, when the second terminal device is located outside the coverage of the network device, one or more first terminal devices are selected as candidate relay devices according to a, and the first terminal device can be selected within a larger range of received signal strength to maximize the The candidate relay device is selected from more first terminal devices, so as to improve the success rate of establishing a relay connection.
  • one or more first terminal devices are selected as candidate relay devices according to b, so one or more of the first terminal devices selected according to b
  • the signal quality of the first terminal devices is better than the signal quality of the one or more first terminal devices selected according to a, so as to improve the relay communication quality.
  • the above values of a and/or b may be configured by network equipment or core network equipment, or may be pre-configured.
  • the value of a is configured through reselectionInfoIC in minHyst (or called sidelink relay reselection configuration information), reselectionInfoIC is the reselection configuration information when the UE is within the coverage of the network device, including Parameters used by the UE when selecting and/or reselection of the relay UE on the sidelink.
  • reselectionInfoOoC is the reselection configuration information when the UE is out of the coverage of the network device, including the selection of the out-of-coverage UE performing the sidelink relay UE selection and/or Parameters to use when reselection.
  • the network device or the core network device configures reselectionInfoIC and reselectionInfoOoC to the second terminal device, where reselectionInfoIC and reselectionInfoOoC respectively include the configuration information of a and b.
  • reselectionInfoIC and reselectionInfoOoC respectively include the configuration information of a and b.
  • the second terminal device selects the first terminal device according to a; when the second terminal device is located outside the coverage of the network device, the second terminal device selects the first terminal device according to b a terminal device.
  • the second terminal device may select the first terminal device with the best PC5 link quality according to the received signal strength to establish a relay connection. For example, when the second terminal device receives the first information respectively sent by multiple first terminal devices, the second terminal device can obtain the received signal strength of each first terminal device, and select the one with the best signal quality according to the received signal strength The first terminal device is used as a candidate relay device.
  • the second terminal device may be Re-determine the relay device, for example, re-execute the action of S102, or re-execute the actions of S101 and S102.
  • the second threshold may be configured by network equipment or core network equipment, or may be pre-configured. For the configuration of the second threshold, reference may be made to the foregoing description about the first threshold. The second threshold may be the same as the first threshold.
  • the second terminal device may re-execute the action of S102, or re-execute the actions of S101 and S102 after the upper layer instructs to re-determine the relay device (or instructs not to use the current relay device). For example, when the PSSCH-RSRP of the currently selected relay UE is lower than the threshold q-RxLevMin, or when the upper layer instructs not to use the currently selected relay UE, the second terminal device reselects at least one PSSCH-RSRP For the candidate relay devices that exceed the threshold q-RxLevMin, then determine the relay device from the candidate relay devices, and establish a relay connection.
  • PSSCH is used as an example for description in the above examples, and in actual use, the PSSCH in the above examples can be replaced with PSCCH as required.
  • a communication method provided by an embodiment of the present application is described below by taking the first information carried on the PSSCH as an example.
  • the communication method may include the steps shown in Figure 10:
  • the second terminal device becomes a remote UE.
  • the first terminal device acquires the configuration information of the first resource pool, and the second terminal device acquires the configuration information of the first resource pool.
  • the first resource pool may be the resource pool of the discovery sender
  • the first resource pool may be the resource pool of the discovery receiver.
  • the resources included in the first resource pool are resources occupied by PSSCH or PSSCH.
  • S201 may be executed before S202, or S202 may be executed before S201, or S201 and S202 may be executed simultaneously.
  • S203 The first terminal device sends the first information through the first resource in the first resource pool.
  • the first terminal device may use a low transmission code rate to send the first information, or in other words, the code transmission rate of the first information is not higher than the set code rate; or , the first information is sent with high transmit power, or in other words, the transmit power of the first information is not lower than the set power.
  • the sending of the first information is periodic.
  • the sending period and starting moment of the first information may be configured by the network (core network device and/or access network device, etc.), or may be pre-configured.
  • the second terminal device receives the first information.
  • the second terminal device measures the PSSCH-RSRP at the physical layer, and performs filtering according to the configured or preconfigured filtering parameters to obtain the received signal strength.
  • the second terminal device measures the PSSCH-RSRP at the physical layer after detecting the first information at the physical layer, compared to the prior art implementation that needs to trigger the physical layer to measure the signal reception strength after identifying the discovery message at the high layer, It can improve the discovery efficiency.
  • the filtering performed in S204 may be layer 2 filtering or layer 3 filtering.
  • the second terminal device determines whether to use the first terminal device as a candidate relay device according to the received signal strength.
  • S205 may be performed by a higher layer of the second terminal device.
  • the physical layer reports the PSSCH-RSRP to the MAC layer, and the MAC layer filters the PSSCH-RSRP according to the configured or pre-configured filtering parameters to obtain the received signal strength, and then the MAC layer and/or the RRC layer determines whether to The first terminal device is used as a candidate relay device.
  • the physical layer reports the PSSCH-RSRP to the RRC layer, and the RRC layer filters the PSSCH-RSRP according to the configured or pre-configured filtering parameters to obtain the received signal strength, and then the RRC layer determines whether to send the first terminal according to the received signal strength. device as a candidate relay device.
  • the second terminal device sorts the latest PSSCH-RSRP filtering results (that is, the received signal strength), and selects the terminal devices corresponding to the top n filtering results with the best link quality that meet the candidate conditions as candidates. follow the device.
  • the candidate condition here, for example, the received signal strength of the candidate relay device is not lower than the first threshold.
  • the first threshold when the second terminal device is located within the coverage of the network device, the first threshold may be represented as a; when the second terminal device is located outside the coverage of the network device, the first threshold is b, and a is greater than b.
  • the second terminal device determines that no relay device is available.
  • the second terminal device determines a relay device from at least one candidate relay device, and establishes a connection with the relay device.
  • the second terminal device may select other terminal devices that satisfy the candidate condition as the relay device from the candidate relay devices.
  • the mutual discovery process between the remote UE (ie the second terminal device) and the relay UE (such as the first terminal device) can be implemented based on the first resource pool, which can improve the reliability of the discovery process.
  • a communication method provided by an embodiment of the present application is described below by taking the first information carried on the PSCCH as an example.
  • the communication method may include the steps shown in Figure 11:
  • the second terminal device becomes a remote UE.
  • the first terminal device obtains the configuration information of the first resource pool
  • the second terminal device obtains the configuration information of the first resource pool.
  • the first resource pool may be the resource pool of the discovery sender
  • the first resource pool may be the resource pool of the discovery receiver.
  • the resources included in the first resource pool are resources occupied by PSCCH or PSCCH.
  • S301 may be executed before S302, or S302 may be executed before S301, or S301 and S302 may be executed simultaneously.
  • S303 The first terminal device sends the first information through the first resource in the first resource pool.
  • the first terminal device may use high transmit power to send the first information, or in other words, the transmit power of the first information is not lower than the set power.
  • the sending of the first information is periodic.
  • the sending period and starting moment of the first information may be configured by the network (core network device and/or access network device, etc.), or may be pre-configured.
  • the second terminal device receives the first information.
  • the second terminal device measures the PSCCH-RSRP at the physical layer, and performs filtering according to the configured or preconfigured filtering parameters to obtain the received signal strength.
  • the second terminal device measures the PSCCH-RSRP at the physical layer after detecting the first information at the physical layer, compared to the implementation method in the prior art that requires the physical layer to measure the signal reception strength after identifying the discovery message at the high layer, It can improve the discovery efficiency.
  • the filtering performed in S304 may be layer 2 filtering or layer 3 filtering.
  • the second terminal device determines whether to use the first terminal device as a candidate relay device according to the received signal strength.
  • S305 may be performed by a higher layer of the second terminal device.
  • the physical layer reports the PSCCH-RSRP to the MAC layer, and the MAC layer filters the PSCCH-RSRP according to the configured or pre-configured filtering parameters to obtain the received signal strength, and then the MAC layer and/or the RRC layer determines whether to The first terminal device is used as a candidate relay device.
  • the physical layer reports the PSCCH-RSRP to the RRC layer, and the RRC layer filters the PSCCH-RSRP according to the configured or pre-configured filtering parameters to obtain the received signal strength, and then the RRC layer determines whether to send the first terminal according to the received signal strength. device as a candidate relay device.
  • the second terminal device sorts the latest PSCCH-RSRP filtering results (that is, the received signal strength), and selects the terminal device corresponding to the top n filtering results with the best link quality satisfying the candidate condition as the candidate. follow the device.
  • the candidate condition here, for example, the received signal strength of the candidate relay device is not lower than the first threshold.
  • the first threshold when the second terminal device is located within the coverage of the network device, the first threshold may be represented as a; when the second terminal device is located outside the coverage of the network device, the first threshold is b, and a is greater than b.
  • the second terminal device determines that no relay device is available.
  • the second terminal device determines a relay device from at least one candidate relay device, and establishes a connection with the relay device.
  • the second terminal device may select other terminal devices that satisfy the candidate condition as the relay device from the candidate relay devices.
  • the mutual discovery process between the remote UE (ie the second terminal device) and the relay UE (such as the first terminal device) can be implemented based on the PSCCH, which can improve the reliability of the discovery process.
  • an embodiment of the present application further provides a communication apparatus for implementing the above functions implemented by the first terminal device (or relay device) and/or the second terminal device (or remote device).
  • the device may include the structure shown in FIGS. 7 and or 8 .
  • Embodiments of the present application provide a communication system.
  • the communication system may include the first terminal device (or relay device) and/or the second terminal device (or remote device) involved in the above embodiments.
  • the communication system may include any one of the structures shown in FIG. 1 to FIG. 3 .
  • the communication apparatus can be used to implement the steps implemented by the first terminal device (or relay device) and/or the second terminal device (or remote device) in any of the communication methods shown in FIG. 9 to FIG. 11 .
  • Embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium is used to store a computer program.
  • the computer program When the computer program is executed by a computer, the computer can implement the methods shown in FIG. 9 to FIG. 11 provided by the foregoing method embodiments. Processes related to the first terminal device (or relay device) and/or the second terminal device (or remote device) in the embodiment.
  • Embodiments of the present application further provide a computer program product, where the computer program product is used to store a computer program, and when the computer program is executed by a computer, the computer can implement the same functions as in the embodiments shown in FIGS. 9 to 11 provided by the foregoing method embodiments. Processes related to the first terminal device (or relay device) and/or the second terminal device (or remote device).
  • Embodiments of the present application further provide a chip or a chip system (or circuit), where the chip may include a processor, and the processor may be configured to call a program or an instruction in a memory to execute the methods shown in FIGS. 9 to 11 provided by the foregoing method embodiments. flow related to the first terminal device (or relay device) and/or the second terminal device (or remote device) in the illustrated embodiment.
  • the chip system may include the chip and other components such as memory or transceivers.
  • processors mentioned in the embodiments of the present application may be a CPU, and may also be other general-purpose processors, digital signal processors (digital signal processors, DSPs), application specific integrated circuits (application specific integrated circuits, ASICs), ready-made Field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • DSPs digital signal processors
  • ASICs application specific integrated circuits
  • FPGA Field programmable gate array
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM enhanced synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SCRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components
  • the memory storage module
  • memory described herein is intended to include, but not be limited to, these and any other suitable types of memory.
  • the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.
  • the disclosed communication method and communication device may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of units is only a logical function division.
  • there may be other division methods for example, multiple units or components may be combined or integrated. to another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • Units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that makes a contribution or a part of the technical solution.
  • the computer software product is stored in a storage medium and includes several instructions for A computer device (which may be a personal computer, a server, or a network device, etc.) is caused to execute all or part of the steps of the methods of the various embodiments of the present application.
  • the aforementioned computer-readable storage medium can be any available medium that can be accessed by a computer.
  • the computer-readable medium may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (electrically erasable programmable read-only memory) read only memory, EEPROM), compact disc read-only memory (CD-ROM), universal serial bus flash disk (universal serial bus flash disk), removable hard disk, or other optical disk storage, disk storage A medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • RAM random access memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • CD-ROM compact disc read-only memory
  • universal serial bus flash disk universal serial bus flash disk
  • removable hard disk or other optical disk storage
  • disk storage A medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

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Abstract

本申请公开了一种通信方法及装置，适用于通信技术领域，包括但不限于车与任何事物(V2X)通信、设备到设备(D2D)通信、物联网(IoT)等领域。本申请使得第二终端设备在接收到第一终端设备通过第一资源传输的第一信息时，可响应于该第一信息确定是否将第一终端设备作为候选中继设备，提高发现可靠性。其中，该第一资源为第一资源池中的资源，第一资源池中的资源为由PSSCH或者PSCCH占用的资源。

Description

一种通信方法及装置 技术领域
本申请涉及无线通信技术领域，特别设计一种通信方法及装置。
背景技术
无线中继通信是无线通信组网的一种形式，可以有效地扩大无线网络的覆盖范围。当远端节点处于数据发送节点的信号覆盖范围以外时，可通过中继节点获取来自于数据发送节点的数据。同理，当远端节点处于数据接收节点的信号覆盖范围以外时，远端节点可通过中继节点向数据接收节点发送数据。其中，远端节点与中继节点之间可通过发现(discovery)实现相互之间的发现和被发现，以便建立远端节点与中继节点之间的中继连接。
目前，长期演进(long term evolution，LTE)技术中的发现过程需要通过物理侧行链路发现信道(physical sidelink discovery channel，PSDCH)的信令交互实现，当远端节点或中继节点接收到PSDCH信令，可根据自身需求以及该信令中携带的远端节点的中继需求或中继节点的中继能力，确定是否与发送该信令的节点建立中继连接。
然而，第五代(5G)移动通信的新空口(new radio，NR)技术下未设置PSDCH，无法沿用LTE技术下的发现过程，导致发现过程的可靠性不高。
发明内容
本申请提供一种通信方法及装置，用以提高发现过程的可靠性。
第一方面，本申请实施例提供一种传输资源确定方法，该方法可以由第一终端设备、第一终端设备中的部件(比如处理器、芯片或芯片***等)、第二终端设备或第二终端设备中的部件(比如处理器、芯片或芯片***等)执行。其中，第一终端设备和/或第二终端设备支持PC5接口通信。
根据该方法，第二终端设备可通过第一资源接收来自于第一终端设备的第一信息，所述第一资源属于第一资源池，所述第一资源池中的资源为由物理侧行链路共享信道PSSCH或者物理侧行链路控制信道PSCCH占用的资源，所述第一资源池为用于确定候选中继设备的资源池。第二终端设备还可响应于第一信息确定是否将所述第一终端设备作为候选中继设备。
采用以上方法，当第二终端设备接收到第一终端设备通过第一资源传输的第一信息时，可响应于该第一信息确定是否将第一终端设备作为候选中继设备，其中，该第一资源为第一资源池中的资源，第一资源池中的资源为由PSSCH或者PSCCH占用的资源。基于该方法可提高发现过程的可靠性。
在一种可能的设计中，第二终端设备可响应于所述第一信息，对承载第一信息的信道进行信号测量及滤波，获得接收信号强度。第二终端设备还可根据所述接收信号强度确定是否将所述第一终端设备作为候选中继设备。采用该设计，第二终端设备可在物理层响应于第一信息进行信号测量，以提高发现效率，降低发现过程的延时。
在一种可能的设计中，所述滤波包括媒体接入控制MAC层滤波(或称层2滤波)和/ 或无线资源控制RRC层滤波(或称层3滤波)。
在一种可能的设计中，当所述接收信号强度不低于第一阈值时，第二终端设备可根据所述接收信号强度确定将所述第一终端设备作为候选中继设备。
在一种可能的设计中，当所述第二终端设备位于网络设备的覆盖范围之内时，所述第一阈值为a，当所述第二终端设备位于网络设备的覆盖范围之外时，所述第一阈值为b，a大于b。采用该设计，可针对第二终端设备设置两个第一阈值a和b，第二终端设备根据当前是否处于网络设备的覆盖范围内选择第一阈值。当第二终端设备位于网络设备覆盖外时，选择较大的第一阈值，以提高建立中继连接的成功率。当第二终端设备位于网络设备覆盖内时，选择较小的第一阈值，以提高中继通信质量。
在一种可能的设计中，第一资源为由PSSCH占用的资源；所述第一信息的传输码率不高于设定码率，和/或，所述第一信息的发射功率不低于设定功率。采用该设计，可提高第一信息的接收成功率，提高发现可靠性。
在一种可能的设计中，第一资源为由PSCCH占用的资源，所述第一信息的发送功率不低于设定功率。采用该设计，可提高第一信息的接收成功率，提高发现可靠性。
在一种可能的设计中，第二终端设备可接收来自于网络设备的第二信息，所述第二信息用于指示所述第一资源池。
第二方面，本申请实施例提供一种传输资源确定方法，该方法可以由第一终端设备、第一终端设备中的部件(比如处理器、芯片或芯片***等)、第二终端设备或第二终端设备中的部件(比如处理器、芯片或芯片***等)执行。其中，第一终端设备和/或第二终端设备支持PC5接口通信。
根据该方法，第一终端设备可通过第一资源发送第一信息，所述第一资源属于第一资源池，所述第一资源池中的资源为由物理侧行链路共享信道PSSCH或者物理侧行链路控制信道PSCCH占用的资源，所述第一资源池为用于确定候选中继设备的资源池。
在一种可能的设计中，第一资源为由PSSCH占用的资源；所述第一信息的传输码率不高于设定码率，和/或，所述第一信息的发射功率不低于设定功率。
在一种可能的设计中，第一资源为由PSCCH占用的资源，所述第一信息的发送功率不低于设定功率。
在一种可能的设计中，第一终端设备还可接收来自于网络设备的第二信息，所述第二信息用于指示所述第一资源池。
以上第二方面所示有益效果可参见前述第一方面的有益效果。
第三方面，本申请实施例提供一种通信装置，可以实现上述第一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***、或处理器等。
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***时，收发单元可以 是芯片***的输入输出接口、处理单元可以是芯片***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中由第一终端设备执行的接收和发送以外的动作。
可选的，该通信装置可包括收发模块和/或通信模块。
可选的，该通信装置可包括处理器和/或收发器。该通信装置还可包括存储器。
第四方面，本申请实施例提供一种通信装置，可以实现上述第一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***、或处理器等。
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***时，收发单元可以是芯片***的输入输出接口、处理单元可以是芯片***的处理器，例如：CPU。
收发单元可用于执行第一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一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发送以外的动作，如从第一资源池中确定第一资源。
可选的，该通信装置可包括收发模块和/或通信模块。
可选的，该通信装置可包括处理器和/或收发器。该通信装置还可包括存储器。
第五方面，提供一种通信***，该通信***包括第三方面以及第四方面所示的通信装置。
第六方面，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二方面或其任意一种可能的实施方式中所示的方法。
第七方面，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二方面或其任意一种可能的实施方式中所示的方法。
第八方面，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二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、芯片或芯片***等。
附图说明
图1为本申请实施例提供的一种通信***的架构示意图；
图2为本申请实施例提供的另一种通信***的架构示意图；
图3为本申请实施例提供的另一种通信***的架构示意图；
图4为一种发现过程的步骤示意图；
图5为另一种发现过程的步骤示意图；
图6为另一种发现过程的步骤示意图；
图7为本申请实施例提供的一种通信装置的结构示意图；
图8为本申请实施例提供的另一种通信装置的结构示意图；
图9为本申请实施例提供的一种通信方法的流程示意图；
图10为本申请实施例提供的另一种通信方法的流程示意图；
图11为本申请实施例提供的另一种通信方法的流程示意图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述。方法实施例中的具体操作方法也可以应用于装置实施例或***实施例中。
本申请实施例提供的资源确定方法可应用于图1所示的侧行传输的通信场景。该通信场景中可包括UE1(或称为第一终端设备)以及UE2(或称为第二终端设备)。示例性的，UE1和/或UE2可以是终端设备或终端设备中的芯片、芯片***、模块、电路或单元等组件。本申请中，终端设备可以是终端(terminal)、移动台(mobile station，MS)、移动终端(mobile terminal)等。举例来说，本申请实施例中的终端设备可以是移动电话(或称为“蜂窝”电话)、具有移动终端的计算机、智能车辆、车联网相关智能设备(例如智能路灯等)、路侧单元(road side unit，RSU)、可穿戴设备等，终端设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载上的移动装置，如车载单元(on-board unit，OBU)。终端设备也可以是具有通信模块的通信芯片，如手持或车载设备中的芯片。
应理解，以上终端设备的具体形态可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、无人驾驶车辆、可穿戴设备、未来5G网络中的终端装置或者未来演进的PLMN网络中的终端装置等。终端设备可以部署在陆地上，包括部署于室内或室外、由用户手持或由车载；终端设备也可以部署在水面上(如轮船等)；终端设备还可以部署在空中(例如飞机、气球和卫星上等)。
下面结合图1所示场景，对本申请的技术背景进行简要说明。
随着无线通信技术的发展，人们对高数据速率和用户体验的需求日益增长，人们对了解周边人或事物并与之通信的邻近服务的需求逐渐增加，因此设备到设备(device-to-device，D2D)技术应运而生。D2D技术的应用，可以减轻蜂窝网络的负担、减少用户设备的电池功耗、提高数据速率，并能很好地满足邻近服务的需求。D2D技术允许多个支持D2D功能的用户设备(或称终端设备)之间在有网络基础设施或无网络基础设施的情况下进行直接发现和直接通信。鉴于D2D技术的特点和优势，基于D2D技术的车联网应用场景被提出。在第三代合作伙伴计划(The 3rd Generation Partnership Project，3GPP)提出的长期演进(long term evolution，LTE)技术的网络下，车与任何事物(vehicle-to-everything，V2X)通信的车联网技术被提出。3GPP标准组织在2017年初正式发布第一代LTE V2X标准，LTE版本号为Release 14。为了满足更加广泛的应用场景需求，5G NR V2X在3GPP标准组织中被进一步研究。以上D2D、V2X技术中，UE和UE之间的通信协议，称为直接通信(PC5)接口，对应的链路称为侧行链路(sidelink，SL)。
应理解，图1所示的UE1以及UE2可被配置为支持侧行链路通信，例如UE1与UE2之间可通过PC5接口进行SL通信。此外，UE1和/或UE2还能够与网络设备(如基站)进行通信(例如，通过通用用户和网络的空口(universal user to network interface，Uu接口)进行通信)，并接受网络设备提供的网络服务。应理解，UE1与UE2进行SL通信所采用的资源可由网络设备通过侧行控制信息(sidelink control information，SCI)调度，或者可由UE1和/或UE2通过感知选择，因此，网络设备对于V2X通信来说并不是必须的，后续可将由网络设备调度的V2X通信称为有网络设备参与的V2X通信，将不需要通过网络设备调度即可进行的V2X通信称为无网络设备参与的V2X通信。
目前，无线中继通信支持如图1所示的UE1通过UE2获得网络设备或UE提供的服务，此时，UE2即中继节点，UE1即远端节点，网络设备或UE为数据接收节点和/或数据发送节点。当由网络设备或UE通过中继节点向UE1发送数据时，网络设备或UE为数据发送节点(或称为信源(source)节点)，UE1可称为数据接收节点(或信宿(destination)节点)；当由UE1通过中继节点向网络设备或UE发送数据时，UE1可称为数据发送节点(或称为信源节点)，网络设备或UE为数据接收节点(或称为信宿节点)。
如图2所示，当数据发送节点和/或数据接收节点为网络设备时，本申请实施例提供的一种通信***可包括远端UE(remote UE)、中继UE(relay UE)和网络设备。其中，当网络设备向远端UE发送数据时，网络设备作为信源节点，中继UE作为中继节点，远端UE作为信宿节点；当远端UE向网络设备发送数据时，远端UE作为信源节点，中继UE作为中继节点，网络设备作为信宿节点。图2中，远端UE和中继UE之间的接口为PC5接口，中继UE和网络设备之间的接口为Uu接口。中继UE可以帮助远端UE接入网络设备，从而由远端UE获取由网络设备提供的网络服务，这里的网络服务包括但不限于远端UE和网络设备之间的数据传输。
示例性的，本申请中的网络设备的功能可由接入网设备实现。其中，接入网设备是指有提供网络接入功能的设备，如无线接入网(radio access network，RAN)基站等等。网络设备具体可包括基站(base station，BS)，或包括基站以及用于控制基站的无线资源管理设备等。该网络设备还可包括中继站(中继设备)、接入点以及未来5G网络中的基站、未来演进的PLMN网络中的基站或者NR基站等。网络设备可以是可穿戴设备或车载设备。网络设备由RSU实现。网络设备也可以是具有通信模块的芯片。应理解，本申请中，网络设备可支持Uu接口通信，例如，通过Uu接口向UE1和/或UE2配置进行SL通信的传输资源、SL参数或感知参数等信息。网络设备可接入核心网(或核心网设备)，如5G核心网，以获得核心网侧的服务。应理解，该网络设备可以是核心网设备或核心网设备以外的网络节点等。
如图3所示，当数据发送节点和/或数据接收节点为终端设备时，本申请实施例提供的一种通信***可包括远端UE、中继UE和UE。其中，当UE向远端UE发送数据时，UE作为信源节点，中继UE作为中继节点，远端UE作为信宿节点；当远端UE向UE发送数据时，远端UE作为信源节点，中继UE作为中继节点，UE作为信宿节点。图3中，远端UE和中继UE之间的接口为PC5接口，中继UE和UE之间的接口为PC5接口。中继UE可以帮助远端UE接入UE，从而由远端UE获取网络服务，这里的网络服务包括但不限于远端UE和UE之间的数据传输。
示例性的，本申请中的远端UE、中继UE和/或UE的功能可由终端设备或终端设备 中的组件实现。该终端设备的形态可参照前述对于终端设备的说明。
以图2所示场景为例，中继节点与远端节点之间的发现过程例如图4或图5所示。
如图4所示为模式A下的发现过程。其中，模式A下的发现过程由中继UE发送通告消息(announcement message)，使得监听到通告消息的远端UE(如图4中的远端UE1和/或远端UE2)可以发现该中继UE，后续可在远端UE与中继UE之间建立中继连接，该中继连接可用于转发来自于远端UE或转发至远端UE的数据、信息、消息或信令等。
如图5所示为模式B下的发现过程。其中，模式B下的发现过程由远端UE发送请求消息(solicitation message)，当中继UE(如图5所示的中继UE1和/或中继UE2)可以向远端UE提供数据转发时，中继UE可向远端UE发送应答消息(response message)，后续可在远端UE与中继UE之间建立中继连接。
另外，在UE间的直接通信中，可实现UE的直接发现。比如图6所示，UE-1发送直接通信请求(direct communication request)消息，该消息可由UE-2、UE-3等终端设备检测到。其中，如果UE-2根据该消息判断可以与UE-1建立中继连接，则UE-2可以通过向UE-1发送直接通信接受(direct communication accept)消息，建立UE-2和UE-1之间的直接通信连接，即可建立远端UE与中继UE之间的中继连接。其中，直接通信请求消息以及直接通信接受消息承载于PDSCH。
应理解，图3所示场景下中继节点与远端节点之间的发现过程可参照图4至图6执行。
目前，在LTE技术中，以上图4至图6所示流程中涉及的用于发现的信令承载于PSDCH，其中，用于发现的信令例如通告消息、请求消息或直接通信请求消息。因此，当中继节点或远端节点接收到承载于PSDCH的用于发现的信令后，可根据发现过程建立中继节点与远端节点之间的中继连接。然而，由于NR技术中未定义PSDCH，因此NR下中继节点与远端节点之间的发现过程需要重新设计。
为了实现NR技术下的发现过程，提高发现过程的可靠性，本申请实施例提供一种通信方法。该通信方法可由中继节点和/或远端节点实施。该远端节点例如图1所示UE1、图2所示远端UE或图3所示远端UE。该中继节点例如图1所示UE2、图2所示中继UE或图3所示中继UE。
应理解，该中继节点和/或远端节点可由终端设备实现。
示例性的，图7示出了终端设备的一种可能的结构示意图，该结构可包括处理模块710和收发模块720。示例性地，图7所示结构可以是终端设备，也可以是应用于终端设备中的芯片或者其他具有本申请所示终端设备功能的组合器件、部件(或称组件)等。当该结构是终端设备时，收发模块720可以是收发器，收发器可以包括天线和射频电路等，处理模块710可以是处理器，例如基带处理器，基带处理器中可以包括一个或多个中央处理单元(central processing unit，CPU)。当该结构是具有本申请所示终端设备功能的部件时，收发模块720可以是射频单元，处理模块710可以是处理器，例如基带处理器。当该结构是芯片***时，收发模块720可以是芯片(例如基带芯片)的输入输出接口、处理模块710可以是芯片***的处理器，可以包括一个或多个中央处理单元。应理解，本申请实施例中的处理模块710可以由处理器或处理器相关电路组件实现，收发模块720可以由收发器或收发器相关电路组件实现。
例如，处理模块710可以用于执行本申请任一实施例中由中继节点和/或远端节点所执行的除了收发操作之外的全部操作，例如处理操作，和/或用于支持本文所描述的技术的其 它过程，比如生成由收发模块720发送的消息、信息和/或信令，和对由收发模块720接收的消息、信息和/或信令进行处理。收发模块720可以用于执行本申请任一实施例中由中继节点和/或远端节点所执行的全部接收和发送操作，和/或用于支持本文所描述的技术的其它过程，例如数据的发送和/或接收。
另外，收发模块720可以是一个功能模块，该功能模块既能完成发送操作也能完成接收操作，例如收发模块720可以用于执行由中继节点和/或远端节点所执行的全部发送操作和接收操作，例如，在执行发送操作时，可以认为收发模块720是发送模块，而在执行接收操作时，可以认为收发模块720是接收模块；或者，收发模块720也可以是两个功能模块，收发模块720可以视为这两个功能模块的统称，这两个功能模块分别为发送模块和接收模块，发送模块用于完成发送操作，例如发送模块可以用于执行由中继节点和/或远端节点所执行的全部发送操作，接收模块用于完成接收操作，接收模块可以用于执行由中继节点和/或远端节点所执行的全部接收操作。
图8示出了另一种终端设备的结构示意图，用于执行本申请实施例提供的由中继节点和/或远端节点执行的动作。便于理解和图示方便。如图8所示，终端设备包括处理器、存储器、射频电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对终端设备进行控制，执行软件程序，处理软件程序的数据等。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。需要说明的是，有些种类的终端设备可以不具有输入输出装置。
当需要发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。为便于说明，图8中仅示出了一个存储器和处理器。在实际的终端设备产品中，可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置，也可以是与处理器集成在一起，本申请实施例对此不做限制。
在本申请实施例中，可以将具有收发功能的天线和射频电路视为终端设备的收发单元(收发单元可以是一个功能单元，该功能单元能够实现发送功能和接收功能；或者，收发单元也可以包括两个功能单元，分别为能够实现接收功能的接收单元和能够实现发送功能的发送单元)，将具有处理功能的处理器视为终端设备的处理单元。如图8所示，终端设备包括收发单元810和处理单元820。收发单元也可以称为收发器、收发机、收发装置等。处理单元也可以称为处理器，处理单板，处理模块、处理装置等。可选的，可以将收发单元810中用于实现接收功能的器件视为接收单元，将收发单元810中用于实现发送功能的器件视为发送单元，即收发单元810包括接收单元和发送单元。收发单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
应理解，收发单元810可与收发模块720对应，或者说，收发模块720可由收发单元810实现。收发单元810用于执行本申请所示实施例中的中继节点和/或远端节点的发送操 作和接收操作，和/或用于支持本文所描述的技术的其它过程。处理单元820可与处理模块710对应，或者说，处理模块710可由处理单元820实现。处理单元820用于执行本申请所示实施例中继节点和/或远端节点除了收发操作之外的其他操作，例如用于执行本申请所示实施例中由中继节点和/或远端节点所执行的除接收和发送以外的全部操作，和/或用于支持本文所描述的技术的其它过程。
本申请实施例提供的通信方法可由第一终端设备和第二终端设备实施。其中，第一终端设备和第二终端设备的结构如图7和/或图8所示。收发模块720和/或收发单元810可用于执行该通信方法中由第一终端设备和/或第二终端设备执行的发送操作和接收操作。处理模块710和/或处理单元820可用于执行该通信方法中由第一终端设备和/或第二终端设备执行的处理操作和/或除接收和发送以外的全部操作。
以第一终端设备和第二终端设备执行该方法为例，如图9所示，该方法可包括以下步骤：
S101：第一终端设备通过第一资源发送第一信息，其中，第一资源属于第一资源池，该第一资源池为用于确定候选中继设备的资源池，第一资源池包括的资源为由物理侧行链路共享信道(physical sidelink shared channel，PSSCH)或者物理侧行链路控制信道(physical sidelink control channel，PSCCH)占用的资源。也就是说，第一资源为第一资源池中的由PSSCH或者PSCCH占用的资源，第一信息承载于PSSCH或者PSCCH。
其中，第一资源池可以是预配置的资源池，或者可以是由接入网设备和/或核心网设备配置的资源池。比如，第一资源池可以是协议定义或预配置的用于确定候选中继设备的资源池。此外，若第一资源池由接入网设备和/或核心网设备配置，则第二终端设备可接收第二信息，第二信息用于配置第一资源池。应理解，本申请中需要对第一终端设备和第二终端设备配置相同的第一资源池。其中，对于第一终端设备来说，第一资源池可以是发现发送端资源池，对于第二终端设备来说，第一资源池可以是发现接收端资源池。
示例性的，当第一资源池由网络设备(网络设备例如基站)(或核心网设备)配置时，一种可能的实现方式为：
对于第一终端设备配置用于确定候选中继设备的发送端资源池(如称为发现发送端资源池(Tx resource pool for discovery))，以及对于第二终端设备配置用于确定候选中继设备的接收端资源池(如称为发现接收端资源池(Rx resource pool for discovery))。对于一个终端设备来说，网络设备可能向该终端设备配置发送端资源池配置和/或接收端资源池配置。
其中，发送端资源池与接收端资源池中的资源相同，发送端资源池以及接收端资源池即第一资源池。该发送端资源池和接收端资源池与网络设备配置的第一终端设备和/或第二终端设备的用于进行通信功能的资源池(communication resource pool)不同。现为了方便说明，将用于进行通信功能的资源池成为第二资源池。
应理解，第二资源池包括的资源为PSSCH或PSCCH占用的资源。当第一终端设备与第二终端设备之间建立中继连接后，第一终端设备可通过该第二资源池向第二终端设备发送数据、信息、信令或消息。同理，第二终端设备可通过第二资源池向第一终端设备发送数据、信息、信令或消息。
在NR技术中，PSSCH可用于传输UE之间的数据、信息、信令或消息等。应理解，PSSCH传输的消息(或信息、信令或消息)可被称为PSCCH消息(或信息、信令或消息)。PSCCH可用于承载调度PSSCH消息(或信息、信令或消息)的控制信息，控制信息例如 侧行控制信息(sidelink control information，SCI)。
相应地，第二终端设备接收该第一信息。
S102：第二终端设备响应于该第一信息确定是否将第一终端设备作为候选中继设备。
采用以上方法，当第二终端设备接收到第一终端设备通过第一资源传输的第一信息时，可响应于该第一信息确定是否将第一终端设备作为候选中继设备。基于该方法可提高发现过程的可靠性。
应理解，在S102中，第二终端设备不必解析第一信息的内容，只需要获知第一信息是承载于第一资源池中的资源的，即可触发确定是否将第一终端设备作为候选中继设备的动作。而识别从在第一信息的资源的过程可由第二终端设备的物理层实现，因此换句话说，采用以上方法，可由第二终端设备的物理层触发确定是否将第一终端设备作为候选中继设备的动作，提高发现效率。
在S101的实施中，当第一信息承载于PSSCH时，为了提高第一信息接收的可靠性以提高发现过程效率，第一终端设备可在S101中采用低传输码率进行第一信息的发送，或者说，第一信息的发码率不高于设定码率；或者，采用高发射功率发送第一信息，或者说，第一信息的发射功率不低于设定功率。
在一种可能的示例中，在通过PSSCH发送第一信息时，可由协议定义或者由第一终端设备决策采用不高于设定码率的码率发送第一信息，以提高第一信息被接收时的可靠性。比如，当网络设备向第一终端设备和第二终端设备配置用于侧行传输的调制编码方案(modulation and coding scheme，MCS)列表(table)(该列表比如记为sl-MCS-Table)，第一终端设备只使用sl-MCS-Table中的最低阶调制编码方案(或前n低阶的调制编码方案中的任意一个，n为正整数)发送第一信息。更具体的示例为，第一终端设备可使用配置的MCS列表中最小索引(或前n小的索引中的任意一个，n为正整数)对应的MCS发送PSSCH。
在另外的示例中，在通过PSSCH发送第一信息时，可由协议定义或者由第一终端设备决策采用较高发射功率发送第一信息，以提高第一信息被接收时的可靠性。比如，该第一信息的发射功率可高于第一终端设备通过第二资源池发送PSSCH消息时的发射功率。
其中，第一资源池的配置信息包括第一资源池中的第一信息的功率控制配置信息，第一资源池的配置信息可用于配置第一资源池。例如，第一资源池的第一信息的功率控制配置信息包括发送功率偏移值X，且定义发送功率偏移值为X，X≥0，X表示第一资源池中第一信息的发送功率相比于承载于第二资源池的PSSCH消息的发送功率的偏移值。当偏移值X＝0时，第一信息的发送功率控制配置与承载于第二资源池的PSSCH消息的发送功率控制配置相同，也就是说，相同条件下，第一终端设备发送第一信息的发送功率可以与第一终端设备发送承载于第二资源池的PSSCH消息的发送功率相同；当偏移值X>0时，第一资源池中PSSCH的发送功率高于相同条件下承载于第二资源池的PSSCH消息的发送功率。
此外，在通过PSCCH发送第一信息时，可由协议定义或者由第一终端设备决策采用较高发射功率(比如大于设定功率的发射功率)发送第一信息，以提高第一信息被接收时的可靠性。比如，该第一信息的发射功率可高于第一终端设备通过第二资源池发送PSCCH消息时的发射功率。具体实现方式可参照前述按照较高发射功率发送承载于PSSCH的第一信息时的说明。
可选的，在S101的实施中，第一终端设备可周期性发送第一信息。其中，周期性发 送的第一信息的周期和起始时刻可由网络设备或核心网设备等配置，或者可以是预配置的。
可选的，在S102之前，第二终端设备可成为远端UE，或者说，第二终端设备进入远端UE状态。
当满足以下条件一或条件二时，第二终端设备成为远端UE：
条件一，第二终端设备用于进行SL通信的频率在覆盖外。UE用于进行SL通信的频率在覆盖外，是指UE在SL使用的频率上，无法满足通信需求。无法满足通信需求的情况例如信号强度或速率不满足通信需求。
条件二，第二终端设备有用于SL通信的服务频率，且第二终端设备驻留小区或主小区的RSRP测量值低于阈值。可选的，该阈值表示为threshHigh。该阈值可由网络配置或由预配置确定。
应理解，以上条件一和条件二仅仅是举例说明，也可在满足本领域的其他的用于确定UE为远端UE的条件时，确定第二终端设备成为远端UE。
可选的，在S102的实施中，第二终端设备可响应于第一信息，对承载于第一信息的信道进行测量及滤波，获得接收信号强度，根据该接收信号强度确定是否将第一终端设备作为候选中继设备。其中，第一终端设备可由物理层识别第一信息，因此可由物理层响应于该第一信息进行信道的信号测量，而无须等待高层的测量指示，可降低发现过程的延时。
示例性的，如果第一资源为PSSCH占用的资源，则第二终端设备可测量PSSCH-参考信号接收功率(reference signal received power，RSRP)，PSSCH-RSRP是PSSCH的解调参考信号(demodulation reference signals，DMRS)所占资源粒子(RE)功率的线性平均。
示例性的，如果第一资源为PSCCH占用的资源，则第二终端设备可测量PSCCH-RSRP，PSCCH-RSRP是PSCCH的DMRS所占资源粒子功率的线性平均。
可选的，以上获得测量结果的过程可由第二终端设备的物理层实现。
进一步的，第二终端设备可根据测量结果在高层根据预配置或配置的滤波参数进行滤波，获得滤波结果，该滤波结果用于指示接收信号强度。本申请中，高层可包括媒体接入控制(media access control，MAC)层和/或无线资源控制(radio resource control，RRC)层等物理层之上的协议层。
其中，该测量结果可以是根据最新接收到的第一信息确定的测量结果。比如，第二终端设备接收到周期性发送的第一信息，则第二终端设备可根据周期性的接收到的第一信息获得周期性的测量结果，则第二终端设备根据最新的测量结果确定该滤波结果。
其中，滤波后获得的滤波结果F n，与测量结果M n之间满足：
F n＝(1-a)·F n-1+a·M n；
其中，M n是物理层对于第一资源的信道的最新测量结果，F n是根据最新测量结果获得的更新的滤波结果，F n-1是旧的滤波测量结果，F 0＝M 1是物理层首次的测量结果，a＝1/2 (k/4)或a＝1/2 (ki/4)，k或ki是滤波系数。
应理解，以上滤波方式仅仅是示例性的说明，本申请也不排除采用其他方式和/或公式对于物理层的测量结果确定第一资源的信道的接收信号强度。
本申请中，高层可包括层2和/或层3。当高层为层2时，该滤波过程可称为层2滤波，当高层为层3时，该滤波过程可称为层3滤波。以上层2也可替换为MAC层，层3可替换为RRC层，或者说，层2滤波也可被称为MAC层滤波，层3滤波也可被称为RRC层滤波。
在S102的实施中，当第一终端设备的接收信号强度不低于第一阈值时，第二终端设备可根据接收信号强度将该第一终端设备作为候选中继设备。其中，第一阈值可由网络设备或核心网设备等配置，或者可以是预配置的。第一阈值可标记为RxLevMin。
示例性的，当第二终端设备位于网络设备的覆盖范围之内时，第一阈值可表示为a，当第二终端设备位于网络设备的覆盖范围之外时，第一阈值为b，a大于b。因此，当第二终端设备位于网络设备覆盖外时，根据a选择一个或多个第一终端设备作为候选中继设备，可在更大的接收信号强度范围内选择第一终端设备，以尽可能的从更多第一终端设备中选择候选中继设备，以提高建立中继连接的成功率。而在第二终端设备位于网络设备的覆盖范围内时，为了提高中继连接的可靠性，根据b选择一个或多个第一终端设备作为候选中继设备，因此可根据b选择的一个或多个第一终端设备的信号质量好于根据a选择的一个或多个第一终端设备的信号质量，以提高中继通信质量。
可选的，以上a和/或b的取值可由网络设备或核心网设备等配置，或者可以是预配置的。比如，a的取值通过minHyst(或称侧行链路中继重选配置信息)中的reselectionInfoIC配置，reselectionInfoIC为UE位于网络设备的覆盖范围之内时的重选配置信息，包含覆盖范围内的UE在进行侧行链路的中继UE的选择和/或重选时使用的参数。b的取值通过minHyst中的reselectionInfoOoC配置，reselectionInfoOoC为UE位于网络设备的覆盖范围之外时的重选配置信息，包含覆盖范围外的UE在进行侧行链路的中继UE的选择和/或重选时使用的参数。
例如，一种可能的实现中，网络设备或核心网设备向第二终端设备配置reselectionInfoIC和reselectionInfoOoC，其中，reselectionInfoIC和reselectionInfoOoC分别包括a和b的配置信息。当第二终端设备位于网络设备的覆盖范围之内时，第二终端设备根据a选择第一终端设备；当第二终端设备位于网络设备的覆盖范围之外时，第二终端设备根据b选择第一终端设备。
进一步的，当第一终端设备的数量为多个时，第二终端设备可根据接收信号强度选择PC5链路质量最好的第一终端设备建立中继连接。比如，当第二终端设备接收到多个第一终端设备分别发送的第一信息时，第二终端设备可获得每个第一终端设备的接收信号强度，根据接收信号强度选择信号质量最好的第一终端设备作为候选中继设备。
可选的，当第二终端设备与第一终端设备之间建立中继连接后，如果第二终端设备确定第一终端设备的接收信号强度低于(或不高于)第二阈值，则可重新确定中继设备，比如重新执行S102的动作，或者重新执行S101和S102的动作。其中，第二阈值可由网络设备或核心网设备等配置，或者可以是预配置的。第二阈值的配置方式可参照前述有关第一阈值的说明。第二阈值可以与第一阈值相同。
可选的，第二终端设备可在高层指示重新确定中继设备(或指示不使用当前的中继设备)后，重新执行S102的动作，或者重新执行S101和S102的动作。比如，在当前选定的中继UE的PSSCH-RSRP低于阈值q-RxLevMin时，或者，在高层指示不使用当前选定的中继UE时，第二终端设备重新选定至少一个PSSCH-RSRP超过阈值q-RxLevMin的候选中继设备，再从候选中继设备中确定中继设备，并建立中继连接。
应理解，以上示例中以PSSCH为例进行说明，在实际使用中，可根据需要将以上示例中的PSSCH替换为PSCCH。
作为一种示例性的实现方式，下面以第一信息承载于PSSCH为例，介绍本申请实施 例提供的一种通信方法。该通信方法可包括图10所示步骤：
S201：第二终端设备成为远端UE。
S202：第一终端设备获取第一资源池的配置信息，第二终端设备获取第一资源池的配置信息。其中，对于第一终端设备来说，第一资源池可以是发现发送端资源池，对于第二终端设备来说，第一资源池可以是发现接收端资源池。第一资源池包括的资源为由PSSCH或者PSSCH占用的资源。
应理解，本申请不限定S201与S202之间的时序关系，比如，S201可以先于S202执行，或者，S202可以先于S201执行，或者，S201与S202可同时执行。
S203：第一终端设备通过第一资源池中的第一资源发送第一信息。
可选的，为了提高第一信息接收的可靠性，第一终端设备可采用低传输码率进行第一信息的发送，或者说，第一信息的发码率不高于设定码率；或者，采用高发射功率发送第一信息，或者说，第一信息的发射功率不低于设定功率。
可选的，第一信息的发送是周期性的。其中，第一信息的发送周期和起始时刻可由网络(核心网设备和/或接入网设备等)配置，或者是预配置的。
相应地，第二终端设备接收第一信息。
S204：第二终端设备在物理层测量PSSCH-RSRP，并根据配置或预配置的滤波参数进行滤波，获得接收信号强度。
S204中，第二终端设备在物理层检测到第一信息后在物理层测量PSSCH-RSRP，相比于现有技术中需要在高层识别发现消息后再触发物理层测量信号接收强度的实现方式，能够提高发现效率。
可选的，S204中进行的滤波可以是层2滤波或者层3滤波。
S205：第二终端设备根据该接收信号强度确定是否将第一终端设备作为候选中继设备。
S205可由第二终端设备的高层执行。比如，物理层将PSSCH-RSRP上报至MAC层，MAC层根据配置或预配置的滤波参数对PSSCH-RSRP进行滤波，获得接收信号强度，之后由MAC层和/或RRC层根据接收信号强度确定是否将第一终端设备作为候选中继设备。再比如，物理层将PSSCH-RSRP上报至RRC层，RRC层根据配置或预配置的滤波参数对PSSCH-RSRP进行滤波，获得接收信号强度，之后由RRC层根据接收信号强度确定是否将第一终端设备作为候选中继设备。
可选的，第二终端设备对最新的PSSCH-RSRP的滤波结果(即接收信号强度)进行排序，选择满足候选条件的链路质量最好的前n个滤波结果所对应的终端设备作为候选中继设备。这里的候选条件，例如候选中继设备的接收信号强度不低于第一阈值。
可选的，当第二终端设备位于网络设备的覆盖范围之内时，第一阈值可表示为a，当第二终端设备位于网络设备的覆盖范围之外时，第一阈值为b，a大于b。
可选的，如果没有满足候选条件的终端设备，则第二终端设备确定没有中继设备可用。
S206：第二终端设备从至少一个候选中继设备中确定中继设备，并建立与中继设备之间的连接。
可选的，第二终端设备在从至少一个候选中继设备中确定中继设备后，若确定该中继设备不满足候选条件，比如，中继设备的接收信号强度低于第二阈值，或者，若第二终端设备的高层指示不使用当前选定的中继设备，则第二终端设备可从候选中继设备中选择其他的满足候选条件的终端设备作为中继设备。
采用图10所示步骤，可基于第一资源池实现远端UE(即第二终端设备)和中继UE(比如第一终端设备)相互之间的发现过程，可提高发现过程的可靠性。
作为一种示例性的实现方式，下面以第一信息承载于PSCCH为例，介绍本申请实施例提供的一种通信方法。该通信方法可包括图11所示步骤：
S301：第二终端设备成为远端UE。
S302：第一终端设备获取第一资源池的配置信息，第二终端设备获取第一资源池的配置信息。其中，对于第一终端设备来说，第一资源池可以是发现发送端资源池，对于第二终端设备来说，第一资源池可以是发现接收端资源池。第一资源池包括的资源为由PSCCH或者PSCCH占用的资源。
应理解，本申请不限定S301与S302之间的时序关系，比如，S301可以先于S302执行，或者，S302可以先于S301执行，或者，S301与S302可同时执行。
S303：第一终端设备通过第一资源池中的第一资源发送第一信息。
可选的，为了提高第一信息接收的可靠性，第一终端设备可采用高发射功率发送第一信息，或者说，第一信息的发射功率不低于设定功率。
可选的，第一信息的发送是周期性的。其中，第一信息的发送周期和起始时刻可由网络(核心网设备和/或接入网设备等)配置，或者是预配置的。
相应地，第二终端设备接收第一信息。
S304：第二终端设备在物理层测量PSCCH-RSRP，并根据配置或预配置的滤波参数进行滤波，获得接收信号强度。
S304中，第二终端设备在物理层检测到第一信息后在物理层测量PSCCH-RSRP，相比于现有技术中需要在高层识别发现消息后再触发物理层测量信号接收强度的实现方式，能够提高发现效率。
可选的，S304中进行的滤波可以是层2滤波或者层3滤波。
S305：第二终端设备根据该接收信号强度确定是否将第一终端设备作为候选中继设备。
S305可由第二终端设备的高层执行。比如，物理层将PSCCH-RSRP上报至MAC层，MAC层根据配置或预配置的滤波参数对PSCCH-RSRP进行滤波，获得接收信号强度，之后由MAC层和/或RRC层根据接收信号强度确定是否将第一终端设备作为候选中继设备。再比如，物理层将PSCCH-RSRP上报至RRC层，RRC层根据配置或预配置的滤波参数对PSCCH-RSRP进行滤波，获得接收信号强度，之后由RRC层根据接收信号强度确定是否将第一终端设备作为候选中继设备。
可选的，第二终端设备对最新的PSCCH-RSRP的滤波结果(即接收信号强度)进行排序，选择满足候选条件的链路质量最好的前n个滤波结果所对应的终端设备作为候选中继设备。这里的候选条件，例如候选中继设备的接收信号强度不低于第一阈值。
可选的，当第二终端设备位于网络设备的覆盖范围之内时，第一阈值可表示为a，当第二终端设备位于网络设备的覆盖范围之外时，第一阈值为b，a大于b。
可选的，如果没有满足候选条件的终端设备，则第二终端设备确定没有中继设备可用。
S306：第二终端设备从至少一个候选中继设备中确定中继设备，并建立与中继设备之间的连接。
可选的，第二终端设备在从至少一个候选中继设备中确定中继设备后，若确定该中继设备不满足候选条件，比如，中继设备的接收信号强度低于第二阈值，或者，若第二终端 设备的高层指示不使用当前选定的中继设备，则第二终端设备可从候选中继设备中选择其他的满足候选条件的终端设备作为中继设备。
采用图11所示步骤，可基于PSCCH实现远端UE(即第二终端设备)和中继UE(比如第一终端设备)相互之间的发现过程，可提高发现过程的可靠性。
基于相同的发明构思，本申请实施例还提供一种通信装置，用于实现以上由第一终端设备(或中继设备)和/或第二终端设备(或远端设备)实现的功能。该装置可包括图7和或图8所示结构。
本申请实施例提供一种通信***。该通信***可以包括上述实施例所涉及的第一终端设备(或中继设备)和/或第二终端设备(或远端设备)。可选的，该通信***可包括图1至图3中任一所示结构。该通信装置可用于实现图9-图11中任一所示的通信方法中由第一终端设备(或中继设备)和/或第二终端设备(或远端设备)实现的步骤。
本申请实施例还提供一种计算机可读存储介质，计算机可读存储介质用于存储计算机程序，该计算机程序被计算机执行时，计算机可以实现上述方法实施例提供的图9-图11所示的实施例中与第一终端设备(或中继设备)和/或第二终端设备(或远端设备)相关的流程。
本申请实施例还提供一种计算机程序产品，计算机程序产品用于存储计算机程序，该计算机程序被计算机执行时，计算机可以实现上述方法实施例提供的图9-图11所示的实施例中与第一终端设备(或中继设备)和/或第二终端设备(或远端设备)相关的流程。
本申请实施例还提供一种芯片或芯片***(或电路)，该芯片可包括处理器，该处理器可用于调用存储器中的程序或指令，执行上述方法实施例提供的图9-图11所示的实施例中与第一终端设备(或中继设备)和/或第二终端设备(或远端设备)相关的流程。该芯片***可包括该芯片，还可存储器或收发器等其他组件。
应理解，本申请实施例中提及的处理器可以是CPU，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)集成在处理器中。
应注意，本文描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的***、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的通信方法和通信装置，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，单元的划分，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，例如多个单元或组件可以结合或者可以集成到另一个***，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
以上功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例方法的全部或部分步骤。而前述的计算机可读存储介质，可以是计算机能够存取的任何可用介质。以此为例但不限于：计算机可读介质可以包括随机存取存储器(random access memory，RAM)、只读存储器(read-only memory，ROM)、电可擦可编程只读存储器(electrically erasable programmable read only memory，EEPROM)、紧凑型光盘只读存储器(compact disc read-only memory，CD-ROM)、通用串行总线闪存盘(universal serial bus flash disk)、移动硬盘、或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者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他介质。
以上仅为本申请的具体实施方式，但本申请实施例的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请实施例揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请实施例的保护范围之内。因此，本申请实施例的保护范围应以权利要求的保护范围为准。

Claims (30)

  1. 一种通信方法，其特征在于，包括：
    通过第一资源接收来自于第一终端设备的第一信息，所述第一资源属于第一资源池，所述第一资源池中的资源为由物理侧行链路共享信道PSSCH或者物理侧行链路控制信道PSCCH占用的资源，所述第一资源池为用于确定候选中继设备的资源池；
    响应于第一信息确定是否将所述第一终端设备作为候选中继设备。
  2. 如权利要求1所述的方法，其特征在于，所述响应于第一信息确定是否将所述第一终端设备作为候选中继设备，包括：
    响应于所述第一信息，对承载第一信息的信道进行信号测量及滤波，获得接收信号强度；
    根据所述接收信号强度确定是否将所述第一终端设备作为候选中继设备。
  3. 如权利要求2所述的方法，其特征在于，所述滤波包括媒体接入控制MAC层滤波和/或无线资源控制RRC层滤波。
  4. 如权利要求2或3所述的方法，其特征在于，当所述接收信号强度不低于第一阈值时，所述根据所述接收信号强度确定是否将所述第一终端设备作为候选中继设备，包括：
    根据所述接收信号强度确定将所述第一终端设备作为候选中继设备。
  5. 如权利要求4所述的方法，其特征在于，所述方法应用于第二终端设备，当所述第二终端设备位于网络设备的覆盖范围之内时，所述第一阈值为a，当所述第二终端设备位于网络设备的覆盖范围之外时，所述第一阈值为b，a大于b。
  6. 如权利要求1-5中任一所述的方法，其特征在于，所述第一资源为由PSSCH占用的资源；
    所述第一信息的传输码率不高于设定码率，和/或，所述第一信息的发射功率不低于设定功率。
  7. 如权利要求1-6中任一所述的方法，其特征在于，所述第一资源为由PSCCH占用的资源，所述第一信息的发送功率不低于设定功率。
  8. 如权利要求1-7中任一所述的方法，其特征在于，还包括：
    接收来自于网络设备的第二信息，所述第二信息用于指示所述第一资源池。
  9. 一种通信方法，其特征在于，包括：
    通过第一资源发送第一信息，所述第一资源属于第一资源池，所述第一资源池中的资源为由物理侧行链路共享信道PSSCH或者物理侧行链路控制信道PSCCH占用的资源，所述第一资源池为用于确定候选中继设备的资源池。
  10. 如权利要求9所述的方法，其特征在于，所述第一资源为由PSSCH占用的资源；
    所述第一信息的传输码率不高于设定码率，和/或，所述第一信息的发射功率不低于设定功率。
  11. 如权利要求9或10所述的方法，其特征在于，所述第一资源为由PSCCH占用的资源，所述第一信息的发送功率不低于设定功率。
  12. 如权利要求9-11中任一所述的方法，其特征在于，还包括：
    接收来自于网络设备的第二信息，所述第二信息用于指示所述第一资源池。
  13. 一种通信装置，其特征在于，包括：
    收发模块，用于通过第一资源接收来自于第一终端设备的第一信息，所述第一资源属于第一资源池，所述第一资源池中的资源为由物理侧行链路共享信道PSSCH或者物理侧行链路控制信道PSCCH占用的资源，所述第一资源池为用于确定候选中继设备的资源池；
    处理模块，用于响应于第一信息确定是否将所述第一终端设备作为候选中继设备。
  14. 如权利要求13所述的通信装置，其特征在于，所述处理模块具体用于：
    响应于所述第一信息，对承载第一信息的信道进行信号测量及滤波，获得接收信号强度；
    根据所述接收信号强度确定是否将所述第一终端设备作为候选中继设备。
  15. 如权利要求14所述的通信装置，其特征在于，所述滤波包括媒体接入控制MAC层滤波和/或无线资源控制RRC层滤波。
  16. 如权利要求14或15所述的通信装置，其特征在于，当所述接收信号强度不低于第一阈值时，所述处理模块具体用于：
    根据所述接收信号强度确定将所述第一终端设备作为候选中继设备。
  17. 如权利要求16所述的通信装置，其特征在于，所述方法应用于第二终端设备，当所述第二终端设备位于网络设备的覆盖范围之内时，所述第一阈值为a，当所述第二终端设备位于网络设备的覆盖范围之外时，所述第一阈值为b，a大于b。
  18. 如权利要求13-17中任一所述的通信装置，其特征在于，所述第一资源为由PSSCH占用的资源；
    所述第一信息的传输码率不高于设定码率，和/或，所述第一信息的发射功率不低于设定功率。
  19. 如权利要求13-18中任一所述的通信装置，其特征在于，所述第一资源为由PSCCH占用的资源，所述第一信息的发送功率不低于设定功率。
  20. 如权利要求13-19中任一所述的通信装置，其特征在于，所述收发模块还用于：
    接收来自于网络设备的第二信息，所述第二信息用于指示所述第一资源池。
  21. 一种通信装置，其特征在于，包括：
    处理模块，用于确定第一资源，所述第一资源属于第一资源池，所述第一资源池中的资源为由物理侧行链路共享信道PSSCH或者物理侧行链路控制信道PSCCH占用的资源，所述第一资源池为用于确定候选中继设备的资源池；
    收发模块，用于通过所述第一资源发送第一信息。
  22. 如权利要求21所述的通信装置，其特征在于，所述第一资源为由PSSCH占用的资源；
    所述第一信息的传输码率不高于设定码率，和/或，所述第一信息的发射功率不低于设定功率。
  23. 如权利要求21或22所述的通信装置，其特征在于，所述第一资源为由PSCCH占用的资源，所述第一信息的发送功率不低于设定功率。
  24. 如权利要求21-23中任一所述的通信装置，其特征在于，所述收发模块还用于：
    接收来自于网络设备的第二信息，所述第二信息用于指示所述第一资源池。
  25. 一种通信装置，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1-8中任一项所述的方法。
  26. 一种通信装置，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9-12中任一项所述的方法。
  27. 一种通信***，其特征在于，包括如权利要求13-20或25中任一所述的通信装置和如权利要求21-24或26中任一所述的通信装置。
  28. 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1-12中任一项所述的方法。
  29. 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1-12中任一项所述的方法。
  30. 一种电路，其特征在于，所述电路与存储器耦合，所述电路用于读取并执行所述存储器中存储的程序以执行如权利要求1-12中任一项所述的方法。
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160337935A1 (en) * 2015-05-14 2016-11-17 Qualcomm Incorporated Measurement of d2d channels
CN107534832A (zh) * 2015-04-17 2018-01-02 Lg电子株式会社 在无线通信***中测量d2d信号或选择中继的方法和设备
WO2019183961A1 (zh) * 2018-03-30 2019-10-03 华为技术有限公司 一种通信方法及终端设备
CN110461020A (zh) * 2019-08-16 2019-11-15 展讯通信（上海）有限公司 用于辅链路的中继选择方法及装置、存储介质、终端

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107534832A (zh) * 2015-04-17 2018-01-02 Lg电子株式会社 在无线通信***中测量d2d信号或选择中继的方法和设备
US20160337935A1 (en) * 2015-05-14 2016-11-17 Qualcomm Incorporated Measurement of d2d channels
WO2019183961A1 (zh) * 2018-03-30 2019-10-03 华为技术有限公司 一种通信方法及终端设备
CN110461020A (zh) * 2019-08-16 2019-11-15 展讯通信（上海）有限公司 用于辅链路的中继选择方法及装置、存储介质、终端

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MEDIATEK INC.: "Initiation of relaying operation", 3GPP DRAFT; R2-2006573, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. electronic; 20200817 - 20200828, 7 August 2020 (2020-08-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051911516 *

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