WO2021092925A1 - Procédé de communication et appareil de communication - Google Patents

Procédé de communication et appareil de communication Download PDF

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Publication number
WO2021092925A1
WO2021092925A1 PCT/CN2019/118876 CN2019118876W WO2021092925A1 WO 2021092925 A1 WO2021092925 A1 WO 2021092925A1 CN 2019118876 W CN2019118876 W CN 2019118876W WO 2021092925 A1 WO2021092925 A1 WO 2021092925A1
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Prior art keywords
terminal
parameter
group
value
terminals
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PCT/CN2019/118876
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English (en)
Chinese (zh)
Inventor
张云昊
陈雁
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2019/118876 priority Critical patent/WO2021092925A1/fr
Priority to CN201980101568.3A priority patent/CN114600481B/zh
Publication of WO2021092925A1 publication Critical patent/WO2021092925A1/fr
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management

Definitions

  • This application relates to the field of communication, and more specifically, to a communication method and communication device.
  • the long term evolution (LTE) standard of the 3rd generation partnership project (3GPP) supports terminal-to-terminal sidelink communication.
  • the terminal and the terminal can form a terminal group for group communication.
  • a terminal group When a terminal group is working, it may be in three cellular network coverage states, including in-coverage, out-of-coverage, and partial-coverage.
  • the terminal group in Figure 1 can be located outside the network coverage area, or it can also be located within the network coverage area, or it can be that some terminals in the terminal group are outside the network coverage area, and some terminals Within the network coverage.
  • a terminal group can also be called a terminal cluster, or "cluster" for short.
  • the terminal group includes one cooperative terminal and at least one target terminal.
  • the cooperative terminal is used to assist other terminals in the terminal group to forward data.
  • Cooperative terminals can also be called "cluster heads".
  • the target terminal may also be referred to as a "cluster member".
  • the base station clusters devices that are close to each other according to the distance from the device to the device (D2D), and assigns a cluster head to each cluster.
  • the base station plays a control role in the process of clustering and specifying the cluster head.
  • RRC radio resource control
  • the terminal needs to be in a radio resource control (RRC) connection (CONNECTED) state before entering a cluster, and terminals in other states need to perform random access first, which increases the delay of the terminal entering the cluster.
  • RRC radio resource control
  • a large amount of signaling interaction is required between the terminal and the base station.
  • the base station signaling overhead will be very large, which affects normal uplink and downlink scheduling.
  • this method is no longer applicable to terminals outside the network coverage in FIG. 1.
  • the present application provides a communication method and communication device. Whether it is within or outside the network coverage, the terminal can determine whether it is the target terminal or the cooperative terminal in the terminal group, which helps to improve the efficiency of the group. Save signaling overhead.
  • a communication method is provided.
  • the communication method may be executed by a first terminal, or may be executed by a device (for example, one or more of a chip, a processor, or a chip system) in the first terminal.
  • a device for example, one or more of a chip, a processor, or a chip system
  • the communication method includes: a first terminal (or a chip, a processor, a chip system in the first terminal, etc.) acquires a first parameter of a second terminal; the first terminal determines the first parameter of the second terminal according to the first parameter of the second terminal.
  • the first terminal is a cooperative terminal, or it is determined that the first terminal is a target terminal.
  • the first terminal obtains the first parameter of the second terminal, and then can determine its own terminal type based on the first parameter, for example, a cooperative terminal or a target terminal.
  • the embodiment of the present application is determined by the terminal itself.
  • the embodiments of the present application are applicable to terminals within or outside the network coverage.
  • the process of terminal grouping may not require the participation of network equipment. Instead, the terminal determines the cooperative terminal, that is, the cluster head. In this way, the first terminal does not need to establish a connection with the network device, report information, etc., which helps to save signaling overhead and reduce time delay.
  • the first terminal determines that the first terminal is a cooperative terminal according to the first parameter of the second terminal, or determines that the first terminal is a target terminal, including: When the value of the first parameter of the first terminal is greater than the value of the first parameter of the second terminal, it is determined that the first terminal is a cooperative terminal; when the value of the first parameter of the first terminal When it is less than or equal to the value of the first parameter of the second terminal, it is determined that the first terminal is the target terminal.
  • the first terminal may compare the value of the first parameter of the first terminal with the value of the first parameter of the second terminal, and then determine whether it is a cooperative terminal of the terminal group or the target of the terminal group based on the comparison result terminal. In this way, suitable cooperative terminals can be determined for the terminal group.
  • the first parameter is related to the following parameters: a parameter related to a signal from a network device, and/or a parameter related to a terminal.
  • the parameter related to the signal from the network device includes one or more of the following: received power and frequency response flatness.
  • the parameters related to the terminal include one or more of the following: total battery capacity, number of antennas, maximum transmission power, receiver sensitivity, processor operation speed, memory capacity, heat dissipation capability, mobility capability, Remaining power, whether it is connected to a sufficient power supply, moving speed, whether it is the leader in the convoy, and the direction of movement of the vehicle.
  • P represents the first parameter
  • P_SS represents a parameter related to the network device signal
  • P_LO represents a parameter related to the terminal
  • ⁇ and ⁇ are predefined values, ⁇ >1, 0 ⁇ 1.
  • the P_SS is weighted to emphasize that the channel attenuation with the network device is small, and the terminal with good flatness can be preferentially used as the cooperative terminal, which helps to select a more suitable cooperative terminal for the terminal group.
  • the value of the first parameter satisfies the following formula:
  • P represents the first parameter
  • P_SS represents a parameter related to the network device signal
  • P_LO represents a parameter related to the terminal
  • ⁇ and ⁇ are predefined values, ⁇ >1, 0 ⁇ 1.
  • the foregoing description of the first parameter is applicable to the terminals appearing in the embodiments of the present application, for example, the first terminal, the second terminal, and so on.
  • the method further includes: the first terminal acquiring first information, the first information is used to indicate the number of terminals in a terminal group, the terminal group includes one cooperative terminal, and at least one Target terminal; the first terminal determines the group joining operation of the first terminal according to the number of terminals in the terminal group.
  • the embodiments of the present application may introduce an upper limit for the number of terminals in a terminal group. In this way, the first terminal can determine whether to join the group based on the number of terminals in the terminal group, so as to ensure that the number of terminals in the current terminal group does not exceed the upper limit of the number of terminals in the terminal group.
  • the first terminal determines the joining operation of the first terminal according to the number of terminals in the terminal group, including: when the number of terminals in the terminal group meets a preset condition When, the first terminal determines to join the group; when the number of terminals in the terminal group does not meet a preset condition, the first terminal determines not to join the group.
  • the preset condition for the number of terminals in a terminal group can be implemented in many possible ways.
  • the number of terminals in the terminal group may belong to a certain preset number interval, or for example, it may be the number of terminals in the terminal group. Meet a certain preset value.
  • the number of terminals in the terminal group meets a preset condition includes: the number of terminals in the terminal group is less than a preset value.
  • the preset value is the upper limit of the number of terminals in the terminal group.
  • the communication method further includes: the first terminal sending second information, where the second information is used to indicate one or more of the following: the first parameter of the first terminal, the The identity of the first terminal, and the number of terminals in the terminal group after the first terminal joins the group.
  • the first terminal can broadcast its own information, such as the first parameter of the first terminal, the ID of the first terminal, and the number of terminals in the terminal group after the first terminal joins the group, so that other terminals can learn.
  • the first terminal determines that it is the target terminal, and the first terminal may send the second information to the cooperative terminal of the terminal group, so as to facilitate the management of the cooperative terminal.
  • the sending of the second information by the first terminal includes: the first terminal sending the second information on a first resource, and the first resource is related to the identity of the first terminal.
  • the first terminal can avoid collisions with resources occupied by other terminals by sending the second information on the first resource.
  • the communication method further includes: the first terminal receiving third information, where the third information includes first parameters and/or identification information corresponding to one or more target terminals.
  • the first terminal can also obtain information broadcast by other terminals.
  • the first terminal can assist the one or more target terminals to forward data by learning the first parameter and/or identification information corresponding to the one or more target terminals.
  • a communication method is provided.
  • the communication method may be executed by a third terminal, or may be executed by a device (for example, one or more of a chip, a processor, or a chip system) in the third terminal.
  • the communication method includes: a third terminal (or a chip, a processor, a chip system in the third terminal, etc.) acquires a first parameter of a fourth terminal, and the value of the first parameter of the fourth terminal is more than one in the terminal group.
  • the maximum value among the values of the first parameter of the four target terminals, the terminal group includes one cooperative terminal and at least one target terminal; the third terminal determines to continue to manage the office based on the first parameter of the fourth terminal.
  • the terminal group, or sending the fourth information to the fourth terminal helps to improve the reliability of the terminal group communication.
  • the third terminal determines to continue to manage the terminal group based on the first parameter of the fourth terminal, or sends fourth information to the fourth terminal, including: When the value of the first parameter of the fourth terminal is greater than the value of the first parameter of the third terminal, the third terminal sends fourth information to the fourth terminal, and the fourth information includes the The first parameter and/or identification information corresponding to one or more target terminals in the terminal group; when the value of the first parameter of the fourth terminal is less than or equal to the value of the first parameter of the third terminal , The third terminal continues to manage the terminal group.
  • the third terminal can compare the value of the first parameter of the third terminal with the value of the first parameter of the fourth terminal, and then decide whether to continue to manage the terminal group based on the comparison result, which can improve the cluster head of the terminal group Reliability.
  • the communication method further includes: the third terminal receives from the fourth terminal Feedback information of the terminal, where the feedback information is used to indicate a successful handover between the fourth terminal and the third terminal.
  • “Successful handover” can be understood as: the fourth terminal has obtained the relevant information of the terminal group managed by the third terminal, for example, the P value and/or ID corresponding to one or more target terminals included in the terminal group, in the terminal group The number of terminals, etc. In this way, the third terminal helps to improve the reliability of the terminal group handover by receiving the feedback information from the fourth terminal.
  • the first parameter is related to the following parameters: a parameter related to a signal from a network device, and/or a parameter related to a terminal.
  • the parameters related to the signal from the network device include one or more of the following: received power and frequency response flatness.
  • the parameters related to the terminal include one or more of the following: total battery capacity, number of antennas, maximum transmission power, receiver sensitivity, processor operation speed, memory capacity, heat dissipation capability, mobility capability, Remaining power, whether it is connected to a sufficient power supply, moving speed, whether it is the leader in the convoy, and the direction of movement of the vehicle.
  • P represents the first parameter
  • P_SS represents a parameter related to the network device signal
  • P_LO represents a parameter related to the terminal
  • ⁇ and ⁇ are predefined values, ⁇ >1, 0 ⁇ 1.
  • the value of the first parameter is determined by satisfying the following formula:
  • P represents the first parameter
  • P_SS represents a parameter related to the network device signal
  • P_LO represents a parameter related to the terminal
  • ⁇ and ⁇ are predefined values, ⁇ >1, 0 ⁇ 1.
  • a communication device in a third aspect, includes a module for executing the method in the foregoing first aspect or any possible implementation of the first aspect; or, including a module for executing the foregoing second aspect or the first aspect.
  • the module of the method in any possible implementation of the two aspects.
  • a communication device including a processor.
  • the processor is coupled with the memory and can be used to execute instructions in the memory to implement the method in any one of the possible implementation manners of the first aspect or the second aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled with the communication interface.
  • the communication device is a terminal device.
  • the communication interface may be a transceiver, or an input/output interface.
  • the communication device is a chip configured in a terminal device.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a processor including: an input circuit, an output circuit, and a processing circuit.
  • the processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any one of the possible implementation manners of the first aspect and the second aspect.
  • the above-mentioned processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, and various logic circuits.
  • the input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver, and the signal output by the output circuit may be, for example, but not limited to, output to the transmitter and transmitted by the transmitter, and the input circuit and output
  • the circuit can be the same circuit, which is used as an input circuit and an output circuit at different times.
  • the embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.
  • an apparatus including a processor and a memory.
  • the processor is used to read instructions stored in the memory, and can receive signals through a receiver, and transmit signals through a transmitter, so as to execute the method in any one of the possible implementation manners of the first aspect and the second aspect.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory and the processor may be provided separately.
  • the memory can be a non-transitory (non-transitory) memory, such as a read only memory (ROM), which can be integrated with the processor on the same chip, or can be set in different On the chip, the embodiment of the present application does not limit the type of the memory and the setting mode of the memory and the processor.
  • ROM read only memory
  • sending instruction information may be a process of outputting instruction information from the processor
  • receiving capability information may be a process of the processor receiving input capability information.
  • the processed output data may be output to the transmitter, and the input data received by the processor may come from the receiver.
  • the transmitter and receiver can be collectively referred to as a transceiver.
  • the device in the above sixth aspect may be a chip, and the processor may be implemented by hardware or software.
  • the processor When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software
  • the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory.
  • the memory may be integrated in the processor, may be located outside the processor, and exist independently.
  • a computer-readable storage medium stores a computer program or instruction. When the computer program or instruction is executed, it realizes the first aspect or any of the possibilities of the first aspect. The method in the implementation.
  • a computer-readable storage medium stores a computer program or instruction.
  • the computer program or instruction When the computer program or instruction is executed, the second aspect or any possibility of the second aspect is realized.
  • a computer program product containing instructions is provided. When the instructions are executed, the method in any possible implementation manner of the first aspect or the first aspect is implemented, or the second aspect or the second aspect mentioned above is implemented. The method in any possible implementation of the aspect.
  • a communication chip in which instructions are stored, which when run on a computer device, cause the communication chip to execute the method in the first aspect or any possible implementation manner in the first aspect.
  • a communication chip in which instructions are stored, which when run on a computer device, cause the communication chip to execute the above-mentioned second aspect or any possible implementation method of the second aspect.
  • a communication system in a twelfth aspect, includes a first terminal and a second terminal.
  • the communication system further includes other devices for communicating with the first terminal and/or the second terminal.
  • a communication system in a thirteenth aspect, includes a third terminal and a fourth terminal.
  • the communication system further includes other devices for communicating with the third terminal and/or the fourth terminal.
  • Figure 1 is a schematic diagram of terminal groups in different network coverage states
  • Figure 2 is a schematic diagram of a system architecture to which an embodiment of the present application is applied;
  • Fig. 3 is a schematic interaction diagram of a communication method according to an embodiment of the present application.
  • Fig. 4 is a schematic flowchart of an example of a communication method according to an embodiment of the present application.
  • FIG. 5 is an example diagram of PSDCH resources in a physical sidelink discovery channel (physical sidelink discovery channel, PSDCH) period;
  • PSDCH physical sidelink discovery channel
  • Fig. 6 is a schematic flowchart of another example of a communication method according to an embodiment of the present application.
  • Fig. 7 is a schematic interaction diagram of a communication method according to another embodiment of the present application.
  • FIG. 8 is a schematic flowchart of an example of a communication method according to another embodiment of the present application.
  • Fig. 9 is a schematic structural diagram of a device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • Fig. 11 is a schematic block diagram of a device according to an embodiment of the present application.
  • multiple can be understood as “at least two” or “two or more”; “multiple” can be understood as “at least two” or “two or more” .
  • LTE long term evolution
  • 5G fifth generation
  • NR new radio
  • D2D Device to device
  • V2X vehicle to everything
  • V2X can realize communication between vehicle and Internet (V2N), vehicle to vehicle (V2V), vehicle to pedestrian (V2P), or vehicle to infrastructure (V2I) Information interaction, etc., can improve the intelligent level of the vehicle and the ability of automatic driving.
  • V2N vehicle to vehicle
  • V2V vehicle to pedestrian
  • V2I vehicle to infrastructure
  • V2N is a terminal device, and the other participant is a network device.
  • V2N is a commonly used form of car networking. Its main function is to connect vehicles to network devices (such as servers, or cloud servers, etc.) through the network, and can use network devices to obtain navigation, entertainment, or anti-theft functions.
  • network devices such as servers, or cloud servers, etc.
  • V2V can be used as a reminder of information interaction between vehicles, for example, in an anti-collision safety system between vehicles.
  • V2P can be used to provide safety warnings to pedestrians or non-motorized vehicles on the road.
  • V2I can be used for communication between vehicles and infrastructure.
  • the infrastructure can be roads, traffic lights, roadblocks, etc., and road management information such as traffic light signal timing can be obtained.
  • Fig. 2 is a schematic diagram of a system architecture to which an embodiment of the present application is applied.
  • the architecture includes a network device 110 and multiple terminals.
  • the terminal 140 to be joined has a group requirement.
  • the terminal group includes one cooperative terminal 120 and at least one target terminal 130. All the terminals shown in FIG. 2 may be all within the coverage area of the network device 110, or all outside the coverage area of the access network device 110, or partly within the coverage area of the network device 110, and partly within the coverage area of the network device 110. 110 out of coverage.
  • FIG. 2 is only a schematic diagram, and the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 2.
  • the embodiment of the present application does not limit the number of access network devices and terminal devices included in the communication system.
  • a terminal that needs to use other terminals to establish contact with an access network device is called a target terminal, for example, a target user equipment (TUE).
  • the target terminal does not directly communicate with the access network equipment.
  • a terminal that assists in forwarding information is called a cooperative (cooperating) terminal, for example, a cooperative user equipment (CUE).
  • the cooperative terminal communicates directly with the access network equipment.
  • the target terminal can communicate with the network device and/or other terminals with the assistance of the cooperative terminal.
  • a cooperative terminal can be used as the cluster head of a terminal group, and the target terminal can be a cluster member.
  • the target terminal communicates with the base station by relaying and forwarding information through the cooperative terminal, or cluster members communicate with other members in the cluster through the scheduling and forwarding of the cluster head. Communication.
  • Network equipment is the access equipment that terminal equipment accesses to the communication system in a wireless way, which can be radio access network (RAN) equipment, base station NodeB, evolved base station (evloved NodeB, eNB), 5G communication
  • the base station (gNB) the transmission point in the system, the base station in the future communication system or the access node in the wireless fidelity (Wi-Fi) system, one or a group (including multiple) of the base station in the 5G system Antenna panel) Antenna panel, or, it can also be a network node that constitutes a gNB or transmission point, such as a baseband unit (BBU), a centralized unit (CU), or a distributed unit (DU). )Wait.
  • BBU baseband unit
  • CU centralized unit
  • DU distributed unit
  • gNB may include CU and DU.
  • the gNB may also include an active antenna unit (AAU).
  • AAU active antenna unit
  • the CU implements some of the functions of the gNB
  • the DU implements some of the functions of the gNB.
  • the CU is responsible for processing non-real-time protocols and services to implement radio resource control (radio resource control, RRC) and packet data convergence protocol (packet data convergence protocol, PDCP) layer functions.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • the DU is responsible for processing physical layer protocols and real-time services to implement the functions of the radio link control (RLC) layer, media access control (MAC) layer, and physical (PHY) layer.
  • RLC radio link control
  • MAC media access control
  • PHY physical
  • AAU realizes some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU , Or, sent by DU and AAU.
  • the network device may be a device that includes one or more of a CU node, a DU node, and an AAU node.
  • the CU may be used as a network device in an access network, or as a network device in a core network (core network, CN), which is not limited in this application.
  • the terminal device may also be called a terminal (terminal), user equipment (UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), and so on.
  • Terminal devices can be mobile phones, tablets, computers with wireless transceiver functions, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, industrial control (industrial control) Wireless terminals in ), wireless terminals in unmanned driving (self-driving), wireless terminals in remote medical surgery, wireless terminals in smart grid (smart grid), wireless terminals in transportation safety (transportation safety) Terminals, wireless terminals in a smart city, wireless terminals in a smart home (smart home), D2D equipment, V2X equipment, roadside unit (RSU), etc.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.
  • Network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, balloons, and satellites.
  • the embodiments of the present application do not limit the application scenarios of the access network device and the terminal device.
  • the embodiments of the present application can be applied to downlink signal transmission, can also be applied to uplink signal transmission, and can also be applied to device-to-device D2D signal transmission.
  • the sending device is an access network device, and the corresponding receiving device is a terminal device.
  • the sending device is a terminal device, and the corresponding receiving device is an access network device.
  • the sending device is a terminal device, and the corresponding receiving device is another terminal device.
  • Communication between network equipment and terminal equipment and between terminal equipment and terminal equipment can be carried out through licensed spectrum (licensed spectrum), communication can also be carried out through unlicensed spectrum (unlicensed spectrum), or through licensed spectrum and unlicensed spectrum at the same time Communication.
  • Communication between access network equipment and terminal equipment and between terminal equipment and terminal equipment can be carried out through the frequency spectrum below 6 gigahertz (gigahertz, GHz), or through the frequency spectrum above 6 GHz, and can also use the frequency below 6 GHz at the same time.
  • the frequency spectrum communicates with the frequency spectrum above 6GHz.
  • the embodiment of the present application does not limit the spectrum resource used between the access network device and the terminal device.
  • the terminal device or network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems or windows operating systems.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the application do not specifically limit the specific structure of the execution body of the method provided in the embodiments of the application, as long as the program that records the code of the method provided in the embodiments of the application can be executed according to the method provided in the embodiments of the application.
  • the method only needs to communicate.
  • the execution subject of the method provided in the embodiments of the present application may be a terminal device or a network device, or a functional module (such as a processor, a chip) that can call and execute the program in the terminal device or the network device. , Or chip system, etc.).
  • various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques.
  • article of manufacture used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • machine-readable medium may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • the terminal group in the embodiment of the present application includes one cooperative terminal and at least one target terminal.
  • the cooperative terminal can also be referred to as the cluster head of the terminal group.
  • the target terminal in the terminal group has a group requirement and needs to use the cooperative terminal to forward data. For example, in a massive machine type of communication (mMTC) large connection scenario, the channel quality between some terminals and network devices is poor, and nearby terminals are required to assist in forwarding data. Another example is that in scenarios with low latency requirements such as V2X, terminals need to directly exchange information to reduce latency.
  • mMTC massive machine type of communication
  • the device-to-device direct communication link is called a secondary link, a side link, or a side link (sidelink).
  • the side link is distinguished from the uplink (uplink) and the downlink (downlink) between the device and the network device.
  • the device-to-device direct communication link includes sidelink communication and sidelink discovery.
  • the side link communication can use a physical side link control channel (PSCCH), and its period is called the PSCCH period.
  • Side link discovery can use PSDCH, and its period is called PSDCH period.
  • the PSDCH period is configured by the network device.
  • the PSDCH period may be configured by the network device through high-level signaling.
  • the PSDCH period can be configured in multiple ways.
  • the PSDCH cycle may be selected by the sending terminal, or the PSDCH cycle may also be predefined in a subscriber identity modula (SIM) card.
  • SIM subscriber identity modula
  • the resources may include one or more of time domain resources, frequency domain resources, code domain resources, or space domain resources.
  • the time domain resource included in the physical resource may include at least one frame, at least one sub-frame, at least one slot, at least one mini-slot, and at least one time unit. , Or at least one time domain symbol, etc.
  • the frequency domain resources included in the physical resource may include at least one carrier (carrier), at least one component carrier (CC), at least one bandwidth part (BWP), and at least one resource block group (resource block group).
  • the airspace resources included in the physical resources may include at least one beam, at least one port, at least one antenna port, or at least one layer/space layer, or the like.
  • the code domain resources included in the physical resources may include at least one orthogonal cover code (OCC), or at least one non-orthogonal multiple access (NOMA) code, and so on.
  • the time unit may be other time domain units such as frames, subframes, slots, mini-slots (or mini-slots), or time domain symbols (or symbols for short).
  • a mini-slot is a time-domain unit whose time-domain length is less than a time slot.
  • the time length of one frame is 10 milliseconds (ms), including 10 sub-frames, and the time length of one sub-frame is 1 ms.
  • a time slot includes 12 time domain symbols in the case of an extended cyclic prefix, and 14 time domain symbols in the case of a normal cyclic prefix.
  • the time domain symbols here may be, for example, orthogonal frequency division multiplexing (OFDM) symbols.
  • the number of time-domain symbols included in a mini-slot is less than 14, such as 2 or 4 or 7, and so on.
  • one slot may include 7 time-domain symbols, and the number of time-domain symbols included in a mini-slot is less than 7, such as 2 or 4, and the specific value is not limited.
  • FIG. 3 is a schematic diagram of a communication method 300 according to an embodiment of the present application.
  • the first terminal in FIG. 3 may be the terminal 140 in FIG. 2 to be added to the group, or may refer to a device or component (such as a processor, a chip, or a chip system, etc.) in the terminal.
  • part or all of the information exchanged between the first terminal and the network in the method 300, or part or all of the information exchanged between the first terminal and the second terminal may be carried in existing messages, channels, and signals.
  • the signaling may also be a newly defined message, channel, signal or signaling, which is not specifically limited.
  • the method 300 includes:
  • S310 The first terminal obtains the first parameter of the second terminal.
  • the second terminal may be the cooperative terminal 120 in FIG. 2.
  • the embodiment of the present application does not specifically limit the manner in which the first terminal obtains the first parameter of the second terminal.
  • the first terminal may receive the first parameter from the second terminal, that is, obtain the first parameter of the second terminal from the second terminal.
  • the second terminal broadcasts its first parameter.
  • the first terminal may also obtain the first parameter of the second terminal from another device.
  • the first terminal obtains the first parameter of the second terminal from the network device.
  • the first terminal device obtains the first parameter of the second terminal from another terminal.
  • the first terminal blindly detects the PSDCH to obtain the first parameter of the second terminal.
  • the first parameter is related to the following parameters: parameters related to the signal from the network device, and/or parameters related to the terminal.
  • terminal in the “terminal-related parameters” here refers to a general term.
  • terminal-related parameters is “parameters related to the first terminal”
  • terminal-related parameters are “parameters related to the second terminal”. Terminal related parameters”.
  • the first parameter is related to the following parameters: parameters related to the signal from the network device, and parameters related to the terminal.
  • the first parameter is related to the following parameters: parameters related to the signal from the network device.
  • the first parameter is related to the following parameters: parameters related to the terminal.
  • the parameters related to the signal from the network device include one or more of the following: received power (such as the received power of the signal from the network device), frequency response flatness (such as the frequency of the signal from the network device) Response flatness).
  • An optional way to obtain the foregoing received power is: in the detected synchronization signal block, the terminal obtains the received power of the primary synchronization signal, or obtains the received power of the secondary synchronization signal, or obtains the received power of the primary synchronization signal and the secondary synchronization signal. The sum of the received power of the synchronization signal. Optionally, normalize the received power.
  • An optional way to obtain frequency response flatness is: the terminal obtains and normalizes the variance of a demodulation reference signal (DMRS) on multiple symbols.
  • DMRS demodulation reference signal
  • P_SS parameters related to the signal from the network device
  • P_SS_A the received power
  • P_SS_B the frequency response flatness
  • the parameters ⁇ and ⁇ can be predefined. If the terminal is not within the coverage area of the network device, or the terminal is in the signal blind zone of the network device without detecting the synchronous broadcast block, the value of P_SS can be considered as 0.
  • the parameters related to the terminal include one or more of the following: total battery capacity, number of antennas, maximum transmission power, receiver sensitivity, processor operation speed, memory capacity, heat dissipation capacity, mobility capacity, remaining power , Whether it is connected to a sufficient power source, moving speed, whether it is the leader in the convoy, and the direction of the vehicle.
  • the parameters related to the terminal may include fixed parameters of the terminal and/or variable parameters of the terminal.
  • the fixed parameters of the terminal may include one or more of the following: total battery capacity of the terminal, number of antennas, maximum transmission power, receiver sensitivity, processor operation speed, memory capacity, heat dissipation capability, mobility capability, etc.
  • the variable parameters of the terminal may include one or more of the following: remaining power, whether to connect a sufficient power supply, moving speed, whether it is the lead vehicle in the fleet, the moving direction of the vehicle, and so on.
  • x represents the value of the fixed parameter of the terminal
  • N represents the total number of fixed parameters of the terminal
  • ⁇ (i) represents the weight of the i-th parameter
  • P_st(i) represents the i-th parameter Value.
  • the value of the first parameter satisfies the following formula (3):
  • P represents the first parameter
  • P_SS represents the parameter related to the network device signal
  • P_LO represents the parameter related to the terminal
  • ⁇ and ⁇ are predefined values, ⁇ >1, 0 ⁇ 1.
  • the P_SS is weighted to emphasize that the channel attenuation between the network equipment is small and the terminal with good flatness can be preferentially used as a cooperative terminal.
  • the value of the first parameter satisfies the following formula (4):
  • P represents the first parameter
  • P_SS represents the parameter related to the network device signal
  • P_LO represents the parameter related to the terminal
  • ⁇ and ⁇ are predefined values, ⁇ >1, 0 ⁇ 1.
  • the foregoing description of the first parameter is applicable to the terminals appearing in the embodiments of the present application (including the terminals that have already appeared, and the terminals appearing below), such as the first terminal, the second terminal, and so on.
  • the first terminal After acquiring the first parameter of the second terminal, the first terminal can compare the value of the first parameter of the second terminal with the value of the first parameter of the first terminal, and then determine whether it can As a cooperative terminal.
  • the value of the first parameter of the first terminal and the value of the first parameter of the second terminal can be compared after being obtained in the same manner.
  • the value of the first parameter of the first terminal and the value of the first parameter of the second terminal are both obtained by formula (3).
  • the value of the first parameter of the first terminal and the value of the first parameter of the second terminal are both obtained by formula (4).
  • the first terminal determines that the first terminal is a cooperative terminal according to the first parameter of the second terminal, or determines that the first terminal is a target terminal.
  • the first terminal obtains the first parameter of the second terminal, and then can determine its own terminal type based on the first parameter, for example, a cooperative terminal or a target terminal.
  • the embodiment of the present application is determined by the terminal itself.
  • the embodiments of the present application are applicable to terminals within or outside the network coverage. For terminals outside the coverage of network equipment, the process of terminal grouping may not require network equipment to participate, but the terminal itself determines the cooperative terminal, that is, the cluster head. In this way, the first terminal does not need to establish a connection with the network device, report information, etc., which helps to save signaling overhead and reduce time delay.
  • S320 includes: when the value of the first parameter of the first terminal is greater than the value of the first parameter of the second terminal, determining that the first terminal is a cooperative terminal; when the value of the first parameter of the first terminal is When it is less than or equal to the value of the first parameter of the second terminal, it is determined that the first terminal is the target terminal.
  • the first terminal can determine that it is a cooperative terminal, that is, the cluster head of the terminal group;
  • the first terminal may determine that it is the target terminal instead of the cluster head of the terminal group.
  • the value of the first parameter of the first terminal is equal to the value of the first parameter of the second terminal
  • the value of the first parameter of the first terminal is only exemplarily described, and does not constitute a limitation to the embodiment of the present application.
  • the value of the first parameter of the first terminal is equal to the value of the first parameter of the second terminal
  • the terminal to enter the group can perform the following steps:
  • the terminal to be added to the group blindly detects the side link broadcast channel.
  • the terminal to be added to the group can blindly detect the side link broadcast channel after the side link broadcast period starts.
  • the side link broadcast period can be a PSCCH period or a PSDCH period;
  • the side link broadcast channel includes one or more of the following: PSCCH, physical sidelink shared channel (PSSCH), physical side Link broadcast channel (physical sidelink broadcast channel, PSBCH), PSDCH.
  • the current cooperative terminal broadcasts its ID and P values on one or more PSDCH resources in the PSDCH period.
  • the PSDCH resource used to broadcast the ID and P value of the cooperative terminal can be configured by the network device; if the cooperative terminal is outside the coverage of the network device, the PSDCH resource used to broadcast the cooperative terminal
  • the PSDCH resource of the ID and P value may be predefined or selected by the cooperative terminal.
  • the terminal to be added to the group performs blind detection on the PSDCH resource.
  • the terminal to be added to the group judges whether a cooperative terminal is detected.
  • the terminal to be added to the group executes 403.
  • the terminal to be added to the group executes 406.
  • the terminal to be added to the group records the ID (for example, ID_c) and P value (for example, P_c) of the cooperative terminal.
  • P_i represents the P value of the terminal to be added to the group.
  • P_c represents the P value of the cooperative terminal detected by the terminal to be added to the group.
  • the terminal to be added to the group determines that it is a cooperative terminal.
  • the terminal to be entered into the group determines that it is a collaborative terminal and broadcasts its ID and P_i on the side chain broadcast channel so that other terminals can obtain ID and P_i to the cooperative terminal.
  • the terminal to be entered into the group determines that it is the target terminal.
  • the terminal to be entered into the group determines that it is the target terminal. After the terminal entering the group determines that it is the target terminal, it can continue to monitor the side chain broadcast channel. In this way, when the cooperative terminal is changed, the target terminal can know the ID of the new cooperative terminal.
  • terminal to be added to the group can repeat the above steps 401-406.
  • the above steps 401-406 can be repeated periodically to determine whether there is a new cooperative terminal. If there is, it is determined that it is the target terminal. Then broadcast your own ID and P value.
  • the cooperative terminal broadcasts its own ID and P value through the side link, so that the terminal to be added to the group can compare its P value with the P value of the cooperative terminal to determine whether it is a new cooperative terminal. Terminal; It is also possible for the terminal to be added to the group to know the ID of the cooperating terminal after determining that it is the target terminal.
  • the method 300 further includes:
  • the first terminal obtains first information, where the first information is used to indicate the number of terminals in the terminal group, and the terminal group includes one cooperative terminal and at least one target terminal.
  • the first terminal determines the group joining operation of the first terminal according to the number of terminals in the terminal group.
  • the first information may be obtained by the first terminal from a cooperative terminal of the terminal group.
  • the cooperative terminal broadcasts the number of terminals currently included in the terminal group.
  • the first information may be obtained by the first terminal from another terminal (for example, a newly joined terminal).
  • a new terminal joining the group can broadcast the number of terminals in the terminal group after joining the group. If the first information is obtained from the cooperative terminal, the first terminal needs to add one to the number of terminals in the terminal group before judging whether the number of terminals in the terminal group meets the preset condition, that is, it is also included in the number of terminals in the terminal group.
  • the first terminal determines the joining operation of the first terminal according to the number of terminals in the terminal group, including: when the number of terminals in the terminal group meets a preset condition, the first terminal determines to join the group; When the data of the terminal does not meet the preset condition, the first terminal determines not to join the group.
  • the first terminal judges whether to join the group according to the preset conditions. If the number of terminals in the terminal group meets the preset condition, the first terminal determines that it can join the group; if the number of terminals in the terminal group does not meet the preset condition, the first terminal determines not to join the group.
  • the foregoing "the number of terminals in the terminal group meets the preset condition" can be implemented in multiple ways.
  • the number of terminals in the terminal group meets the preset condition may be “the number of terminals in the terminal group meets the preset interval”. For example, when the number of terminals in the terminal group is within a preset interval, the first terminal determines that it can join the group; when the number of terminals in the terminal group is not within the preset interval, the first terminal determines not to join the group.
  • the number of terminals in the terminal group meets the preset condition may be "the data of the terminals in the terminal group meets the preset value".
  • the preset value is the upper limit of the number of terminals in the terminal group. For example, when the number of terminals in the terminal group is less than a preset value, the first terminal determines that it can join the group; when the number of terminals in the terminal group is greater than or equal to the preset value, the first terminal determines not to join the group.
  • the method 300 further includes: the first terminal sends second information, the second information is used to indicate one or more of the following: the first parameter of the first terminal, the identifier of the first terminal, the first terminal The number of terminals in the terminal group after the terminal joins the group.
  • the first terminal may broadcast second information, and the second information is used to indicate the first parameter, identifier, and the number of terminals in the terminal group after joining the first terminal, so that other terminals can learn about it.
  • the first terminal may send second information to the cooperative terminal of the terminal group, and the second information is used to indicate the identity of the first terminal, so as to notify the cooperative terminal of the identity of the first terminal.
  • the first terminal may send the second information on the first resource, and the first resource is related to the identity of the first terminal.
  • the first resource is a resource obtained by the first terminal according to its own identifier.
  • the first terminal obtains the identifier of the resource corresponding to the ID of the first terminal according to the ID of the first terminal.
  • ⁇ (x) can be a compression or expansion mapping function. If the ID of the first terminal is used as a variable, the ID of the first terminal can be mapped to the available resources excluding the head and tail in one side link broadcast cycle.
  • the “Remove the available resources at the beginning and the end” refers to the side link broadcast resources corresponding to the side link broadcast period: the first block of resources and other resources of the last segment of resources are removed.
  • the first resource refers to the time-frequency resource that occupies the first time unit (for example, a time slot) in the time domain in the side link broadcast resource, and occupies part of the frequency domain unit corresponding to the first time unit in the frequency domain.
  • the last segment of resources refers to the time-frequency resources that occupy the last time unit in the time domain in the side link broadcast resources, and occupy some or all of the time-frequency resources of the frequency domain units corresponding to the last time unit in the frequency domain.
  • the frequency domain unit may be other frequency domain units such as RBG, PRG, RB, or SC.
  • first block of resources and “last block of resources” is that the number of frequency domain units occupied by the first block of resources in the frequency domain is smaller than the number of frequency domain units occupied by the last block of resources in the frequency domain.
  • the first resource occupies the first time unit in the time domain and the first frequency domain unit in the frequency domain; the last resource occupies the last time unit in the time domain and the last time in the frequency domain All frequency domain units corresponding to the unit.
  • the first block of resources is used for broadcast by the current cooperative terminal of the terminal group.
  • the last segment of resources is generally used for cooperative terminals to hand over relevant information of the terminal group, for example, used for the old cluster head to send the terminal group information to the new cluster head.
  • the resource Rn cannot be the first block of resources and the last block of resources in the side link broadcast resources.
  • the first terminal sends the second information on the resource acquired through the identifier of the first terminal, which can reduce collisions with other terminals to be added to the group occupying resources.
  • the side link broadcast period may be a PSDCH period
  • the side link broadcast resource corresponding to the side link broadcast period may be a PSDCH resource.
  • Fig. 5 shows an example diagram of PSDCH resources in one PSDCH period.
  • the first block of resources is used for the current cooperative terminal to broadcast the number of terminals currently included in the terminal group, the ID of the cooperative terminal, and the P value of the cooperative terminal.
  • the first terminal is the terminal UE_i to be joined
  • Rn is the identifier of a resource obtained by the terminal UE_i to be joined according to its own ID, for example, the resource Rn shown in FIG. 5.
  • the terminal UE_i to be added to the group can declare its entry into the group on the resource Rn.
  • "Declare group entry" means that the terminal UE_i to be added to the group can broadcast its own information on the resource Rn, for example, the ID of UE_i, and/or the P value of UE_i, etc.
  • the resource Rn cannot be the last segment of the resource.
  • the resource between the first block of resources and the resource Rn is the detection range of the terminal UE_i to be added to the group.
  • the terminal UE_i to be added to the group detects whether there is information or parameters sent by other terminals, such as one or more of the P value of the terminal, the ID of the terminal, or the number of terminals in the terminal group after the terminal has joined the group .
  • the last period of time resources in a PSDCH cycle are used for handover or handover of cooperative terminals, not for declaring group entry.
  • the description is combined with the flowchart in FIG. 6 here. It is still assumed that the first terminal is UE_i, the identification information of UE_i is represented by ID_i, and the first parameter of UE_i is represented by P_i, as shown in FIG. 6, including:
  • UE_i determines a resource Rn.
  • UE_i determines a resource Rn in the side link broadcast period.
  • Rn refer to the foregoing description, and refer to the example in FIG. 5 for details.
  • UE_i detects side link broadcast resources.
  • the detection range of UE_i is the resources corresponding to all time units between the first block of resources and Rn illustrated in FIG. 5.
  • UE_i judges whether the parameter of UE_k is detected.
  • the parameters of UE_k include one or more of the following: ID_k, P_k, N_k.
  • ID_k represents the ID of UE_k
  • P_k represents the P value of UE_k
  • N_k represents the number of terminals in the terminal group after UE_k joins the group.
  • step 605 is executed.
  • UE_i records ID_k, P_k, and N_k broadcast by UE_k.
  • the UE_i judges whether the time unit of the resource Rn is reached.
  • UE_i executes 602.
  • UE_i executes 606 to determine whether the upper limit of the group membership of the terminal group has been reached.
  • UE_i judges whether N_k is less than Nmax.
  • Nmax represents the upper limit of the group membership of the terminal group.
  • UE_i declares to join the group on Rn, and execute 607.
  • N_k is not less than Nmax, UE_i will not join the group in this period, and execute 609.
  • UE_i broadcasts ID_i, P_i, and N_i on the resource Rn.
  • N_i N_k+1.
  • N_i is the number of group members of the terminal group after UE_i joins the group.
  • UE_i joins the group successfully.
  • one time unit may carry information of one or more UEs to be added to the group. It should be noted that, in FIG. 6, a case in which information of a UE to be joined into a group is carried on a time unit is taken as an example for description. In addition, even if multiple UEs in the same time unit declare to join the group subsequently, the subsequent UEs to be joined or the cooperating terminal of the terminal group can recognize that multiple UEs have joined the group at the time unit, and declare joining the group in the next time slot.
  • the UE will count the number of UEs that have joined the group in the time unit, that is, the number of members of the terminal group broadcast by the UE that announces that it has joined the group in the next time slot, including the UEs that have joined the group in the time unit The number of.
  • the first terminal can learn related information of other terminals, such as the P value, the ID of the terminal, and so on.
  • the method 300 further includes: the first terminal receives third information, where the third information includes first parameters and/or identification information (for example, ID) corresponding to one or more target terminals.
  • the first terminal may receive a previous cooperative terminal from the terminal group (for example, the value of the first parameter of the former cooperative terminal is smaller than the value of the first parameter of the first terminal).
  • the third information includes the first parameter and/or identification information corresponding to one or more target terminals in the terminal group. Therefore, the first terminal can assist the one or more target terminals to forward data by knowing the first parameter and/or identification information corresponding to the one or more target terminals.
  • FIG. 7 is a schematic diagram of a communication method 700 according to an embodiment of the present application.
  • the third terminal in FIG. 7 may be the cooperative terminal 120 in FIG. 2 or may refer to a device or component (such as a processor, a chip, or a chip system, etc.) in the terminal.
  • part or all of the information exchanged between the third terminal and the network in the method 700, or part or all of the information exchanged between the third terminal and the fourth terminal may be carried in existing messages, channels, and signals.
  • the signaling may also be a newly defined message, channel, signal or signaling, which is not specifically limited.
  • the method 700 includes:
  • the third terminal acquires the first parameter of the fourth terminal, where the value of the first parameter of the fourth terminal is the maximum value among the values of the first parameters of the multiple target terminals in the terminal group, and the terminal group It includes one cooperative terminal and at least one target terminal.
  • the third terminal is a cooperative terminal in the terminal group, and is used to manage the terminal group.
  • the third terminal can also be understood as the cluster head of the terminal group.
  • the third terminal may receive the first parameter of the fourth terminal from the fourth terminal.
  • the third terminal may obtain the first parameter of the fourth terminal from the network device.
  • the third terminal may obtain the first parameter of the fourth terminal from another terminal.
  • the third terminal determines to continue managing the terminal group based on the first parameter of the fourth terminal, or sends fourth information to the fourth terminal.
  • the fourth information includes the first parameter and/or identification information corresponding to one or more target terminals in the terminal group.
  • the third terminal may decide whether to continue to be a cooperative terminal of the terminal group based on the value of the first parameter of the fourth terminal, or decide whether to continue to manage the terminal group, which helps to improve the reliability of terminal group communication.
  • the third terminal may determine whether the value of the first parameter of the fourth terminal satisfies a preset condition. If the value of the first parameter of the fourth terminal meets the preset condition, the third terminal does not continue to manage the terminal group, or sends fourth information to the fourth terminal; if the value of the first parameter of the fourth terminal does not meet If the preset condition is set, the third terminal continues to manage the terminal group.
  • the value of the first parameter of the fourth terminal satisfies the preset condition includes: the value of the first parameter of the fourth terminal is within the preset interval. For example, if the value of the first parameter of the fourth terminal is within the preset interval, the third terminal no longer manages the terminal group or sends fourth information to the fourth terminal; the value of the first parameter of the fourth terminal is not in the preset interval. Set within the interval, the third terminal continues to manage the terminal group.
  • the value of the first parameter of the fourth terminal satisfies the preset condition includes: the value of the first parameter of the fourth terminal is greater than the value of the first parameter of the third terminal.
  • the third terminal sends fourth information to the fourth terminal; when the value of the first parameter of the fourth terminal is less than or When it is equal to the value of the first parameter of the third terminal, the third terminal continues to manage the terminal group.
  • the division of the boundary situation "the value of the first parameter of the fourth terminal is equal to the value of the first parameter of the third terminal" is described here as an example, and does not limit the embodiment of the present application.
  • the value of the first parameter of the fourth terminal is equal to the value of the first parameter of the third terminal may also be the same as "the value of the first parameter of the fourth terminal is greater than the value of the first parameter of the third terminal. "Divided together.
  • the fourth terminal may send feedback information to the third terminal to indicate that the fourth terminal and the third terminal are successfully handed over.
  • "Successful handover" can be understood as: the fourth terminal has obtained the relevant information of the terminal group managed by the third terminal, for example, the P value and/or ID corresponding to one or more target terminals included in the terminal group, in the terminal group The number of terminals, etc.
  • the third terminal receives feedback information from the fourth terminal, and the feedback information is used to indicate the fourth terminal The handover with the third terminal is successful.
  • the fourth terminal may send an acknowledgement (acknowledge, ACK) to the third terminal, where the ACK is used to indicate that the fourth terminal and the third terminal are successfully handed over. In this way, it helps to improve the reliability of the terminal group handover.
  • acknowledgement acknowledgement
  • the following description is made in conjunction with the flowchart in FIG. 8.
  • the flow in Figure 8 is described by taking a side link broadcast cycle from start to end as an example.
  • the side link broadcast period is the PSDCH period.
  • ID_c the ID of the CUE
  • P_c the first parameter of the CUE
  • the CUE sends ID_c, P_c, and N_c on the first block of resources in the side link broadcast period, where N_c is the number of UEs in the current group.
  • the first block of resources refers to the time domain resources occupied by the first time unit in the side link broadcast resources (for example, PSDCH resources).
  • the CUE detects side link broadcast resources.
  • the CUE performs detection on the side link broadcast resources.
  • the CUE obtains the information of the newly added terminal detected in the side link broadcast resource, including the ID of the terminal, the P value of the terminal, and the number of terminals in the terminal group after the terminal has joined the group.
  • UE_i represents the i-th newly added terminal
  • ID_i represents the ID of UE_i
  • P_i represents the P value of UE_i
  • N_i represents the number of terminals in the terminal group after UE_i has joined the group.
  • the CUE can compare the maximum value of the multiple P values of all newly joined terminals with its own P value. For example, max(P) is used to represent the maximum value among multiple P values of all newly joined terminals.
  • the CUE judges whether max(P) is greater than P_c.
  • P_c represents the P value of CUE.
  • the CUE When max(P) is greater than P_c, the CUE sends the terminal group information to the terminal corresponding to max(P), and step 804 is executed.
  • the CUE sends the member information of the terminal group to UE_m in the last segment of the side link broadcast cycle, that is, the member information of the terminal group is handed over to UE_m.
  • the CUE can send the information of all target terminals in the terminal group to UE_m on the last segment of the resource in a PSDCH cycle, for example, the P value of one or more target terminals and / Or ID.
  • the CUE judges whether an ACK from UE_m is received.
  • step 806 is executed.
  • step 807 is executed.
  • the CUE determines that it is a TUE or leaves the group.
  • the CUE determines that it is still the CUE of the terminal group.
  • FIG. 8 It can be understood that the process in FIG. 8 is described by taking a side link broadcast period as an example. After the side link broadcast period ends, the next side link broadcast period can be started. In the next side link broadcast cycle, the CUE can also perform the process in FIG. 8.
  • FIG. 4, FIG. 6 and FIG. 8 are only to facilitate those skilled in the art to understand the embodiments of the present application, and are not intended to limit the embodiments of the present application to the specific scenarios illustrated. Those skilled in the art can obviously make various equivalent modifications or changes based on the examples in FIG. 4, FIG. 6 and FIG. 8, and such modifications or changes also fall within the scope of the embodiments of the present application.
  • the target terminal can also choose to leave the group.
  • the target terminal in a terminal group if it is determined to leave the group, it needs to monitor the number of terminals in a terminal group broadcast by a cooperating terminal or a newly joined terminal, and then monitor the resources of the number of terminals in the terminal group. On the next resource, broadcast its own information, such as the ID and the number of terminals in the terminal group after leaving the group.
  • the cooperative terminal records the information broadcasted by the target terminal to be withdrawn from the group to update the number of terminals in the terminal group.
  • the embodiments of the present application also provide corresponding devices, and the devices include corresponding modules for executing the foregoing embodiments.
  • the module can be software, hardware, or a combination of software and hardware. It can be understood that the technical features described in the method embodiments are also applicable to the following device embodiments.
  • Figure 9 shows a schematic diagram of the structure of a device.
  • the apparatus 1500 may be a terminal device, or a chip, a chip system, or a processor that supports the terminal device to implement the foregoing method.
  • the device can be used to implement the method described in the foregoing method embodiment, and for details, please refer to the description in the foregoing method embodiment.
  • the apparatus 1500 may include one or more processors 1501, and the processor 1501 may also be referred to as a processing unit, which may implement certain control functions.
  • the processor 1501 may be a general-purpose processor or a special-purpose processor. For example, it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control communication devices (such as terminals, terminal chips, etc.), execute software programs, and process data in the software programs.
  • the processor 1501 may also store instructions and/or data 1503, and the instructions and/or data 1503 may be executed by the processor, so that the apparatus 1500 executes the above method embodiments. Described method.
  • the processor 1501 may include a transceiver unit for implementing receiving and sending functions.
  • the transceiver unit may be a transceiver circuit, or an interface, or an interface circuit.
  • the transceiver circuits, interfaces, or interface circuits used to implement the receiving and transmitting functions can be separated or integrated.
  • the foregoing transceiver circuit, interface, or interface circuit may be used for code/data reading and writing, or the foregoing transceiver circuit, interface, or interface circuit may be used for signal transmission or transmission.
  • the apparatus 1500 may include a circuit, and the circuit may implement the sending or receiving or communication function in the foregoing method embodiment.
  • the device 1500 may include one or more memories 1502, on which instructions 1504 may be stored, and the instructions may be executed on the processor, so that the device 1500 executes the foregoing method embodiments. Described method.
  • data may also be stored in the memory.
  • instructions and/or data may also be stored in the processor.
  • the processor and the memory can be provided separately or integrated together. For example, the corresponding relationship described in the foregoing method embodiment may be stored in a memory or in a processor.
  • the device 1500 may further include a transceiver 1505 and/or an antenna 1506.
  • the processor 1501 may be referred to as a processing unit, and controls the device 1500.
  • the transceiver 1505 may be called a transceiver unit, a transceiver, a transceiver circuit or a transceiver, etc., for implementing the transceiver function.
  • an apparatus 1500 may include: the processor 1501 is configured to control the transceiver 1505 to obtain the first terminal of the second terminal. A parameter; and, according to the first parameter of the second terminal, determine that the first terminal is a cooperative terminal, or determine that the first terminal is a target terminal.
  • the processor 1501 is configured to determine that the first terminal is a cooperative terminal according to a first parameter of the second terminal, or determine that the first terminal is a target terminal, including: When the value of the first parameter of a terminal is greater than the value of the first parameter of the second terminal, it is determined that the first terminal is a cooperative terminal; when the value of the first parameter of the first terminal is less than or equal to When the value of the first parameter of the second terminal is taken, it is determined that the first terminal is the target terminal.
  • the processor 1501 is further configured to control the transceiver 1505 to obtain first information, where the first information is used to indicate the number of terminals in a terminal group, and the terminal group includes one cooperative terminal, and at least one Target terminal; and, configured to determine the group joining operation of the first terminal according to the number of terminals in the terminal group.
  • the processor 1501 is configured to determine the joining operation of the first terminal according to the number of terminals in the terminal group, including: when the number of terminals in the terminal group meets a preset condition, determining The first terminal joins the group; when the number of terminals in the terminal group does not meet a preset condition, it is determined that the first terminal does not join the group.
  • that the number of terminals in the terminal group meets a preset condition includes: the number of terminals in the terminal group is less than a preset value.
  • the processor 1501 is further configured to control the transceiver 1505 to send second information, where the second information is used to indicate one or more of the following: the first parameter of the first terminal, The identity of the first terminal, and the number of terminals in the terminal group after the first terminal joins the group.
  • the processor 1501 is further configured to control the transceiver 1505 to send the second information on a first resource, where the first resource is related to the identity of the first terminal.
  • the processor 1501 is further configured to control the transceiver 1505 to receive third information, where the third information includes first parameters and/or identification information corresponding to one or more target terminals.
  • the device 1500 according to the embodiment of the present application can be used to implement the corresponding steps of the method of the first terminal in the foregoing method embodiment, for example, the method in FIG. 3 to FIG. 6, so that the benefits in the foregoing method embodiment can also be realized.
  • the effect, for the sake of brevity, will not be repeated here.
  • an apparatus 1500 may include: the processor 1501 is configured to control the transceiver 1505 to obtain the information of the fourth terminal The first parameter, the value of the first parameter of the fourth terminal is the maximum value of the first parameter values of the multiple target terminals in the terminal group, and the terminal group includes one cooperative terminal and at least one target terminal And, based on the first parameter of the fourth terminal, determine that the third terminal continues to manage the terminal group, or determine that the third terminal sends fourth information to the fourth terminal.
  • the processor 1501 is configured to determine, based on the first parameter of the fourth terminal, that the third terminal continues to manage the terminal group, or determine that the third terminal sends to the fourth terminal
  • the fourth information includes: when the value of the first parameter of the fourth terminal is greater than the value of the first parameter of the third terminal, controlling the transceiver 1505 to send fourth information to the fourth terminal ,
  • the fourth information includes the first parameter and/or identification information corresponding to one or more target terminals in the terminal group; when the value of the first parameter of the fourth terminal is less than or equal to the third When the value of the first parameter of the terminal is taken, it is determined that the third terminal continues to manage the terminal group.
  • the processor 1501 is further configured to control the transceiver 1505 to receive feedback information from the fourth terminal, where the feedback information is used to indicate a successful handover between the fourth terminal and the third terminal.
  • the device 1500 according to the embodiment of the present application can be used to implement the corresponding steps of the method of the third terminal in the foregoing method embodiment, for example, the method in FIG. 7 to FIG. 8. Therefore, it can also implement the method in the foregoing method embodiment.
  • the beneficial effects are not repeated here for the sake of brevity.
  • the processor and transceiver described in this application can be implemented in integrated circuit (IC), analog IC, radio frequency integrated circuit RFIC, mixed signal IC, application specific integrated circuit (ASIC), printed circuit board ( printed circuit board, PCB), electronic equipment, etc.
  • the processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), and P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS nMetal-oxide-semiconductor
  • PMOS bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the device described in the above embodiment may be a network device or a terminal device, but the scope of the device described in this application is not limited to this, and the structure of the device may not be limited by FIG. 9.
  • the device can be a stand-alone device or can be part of a larger device.
  • the device may be:
  • the IC collection may also include storage components for storing data and/or instructions;
  • ASIC such as modem (MSM)
  • FIG. 10 provides a schematic structural diagram of a terminal device.
  • the terminal device can be applied to the scenario shown in FIG. 2.
  • FIG. 10 only shows the main components of the terminal device.
  • the terminal device 1600 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the entire terminal, execute the software program, and process the data of the software program.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal.
  • the antenna is 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, keyboards, etc., are mainly used to receive data input by users and output data to users.
  • the processor can read the software program in the storage unit, parse and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit processes the baseband signal to obtain a radio frequency 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, the radio frequency signal is further converted into a baseband signal, and the baseband signal is output to the processor, and the processor converts the baseband signal into data and performs processing on the data. deal with.
  • FIG. 10 only shows a memory and a processor. In an actual terminal device, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present invention.
  • the processor may include a baseband processor and a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data.
  • the central processing unit is mainly used to control the entire terminal device and execute Software program, processing the data of the software program.
  • the processor in FIG. 10 integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors and are interconnected by technologies such as a bus.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and the various components of the terminal device may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and the communication data may be built in the processor, or stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the antenna and control circuit with the transceiving function can be regarded as the transceiving unit 1611 of the terminal device 1600, and the processor with the processing function can be regarded as the processing unit 1612 of the terminal device 1600.
  • the terminal device 1600 includes a transceiver unit 1611 and a processing unit 1612.
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, and so on.
  • the device for implementing the receiving function in the transceiver unit 1611 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 1611 as the sending unit, that is, the transceiver unit 1611 includes a receiving unit and a sending unit.
  • the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • the foregoing receiving unit and sending unit may be an integrated unit or multiple independent units.
  • the above-mentioned receiving unit and sending unit may be in one geographic location, or may be scattered in multiple geographic locations.
  • Fig. 11 is a schematic block diagram of a device according to an embodiment of the present application.
  • the device may be a terminal or a component of the terminal (for example, an integrated circuit, a chip, etc.).
  • the device may also be another communication module, which is used to implement the method in the method embodiment of the present application.
  • the apparatus 1700 may include: a processing unit 1702 (processing module).
  • the device 1700 may further include a transceiving unit 1701 (transceiving module) and a storage unit 1703 (storing module).
  • one or more units as shown in Figure 11 may be implemented by one or more processors, or by one or more processors and memories; or by one or more processors It may be implemented with a transceiver; or implemented by one or more processors, memories, and transceivers, which is not limited in the embodiment of the present application.
  • the processor, memory, and transceiver can be set separately or integrated.
  • the device has the function of implementing the terminal device (first terminal or third terminal) described in the embodiment of this application.
  • the device includes a module or unit corresponding to the terminal device that executes the steps related to the terminal device described in the embodiment of this application.
  • the function or unit or means can be realized by software, or by hardware, or by hardware executing corresponding software, or by a combination of software and hardware.
  • each module in the apparatus 1700 in the embodiment of the present application may be used to execute the method described in FIG. 3 to FIG. 6 in the embodiment of the present application.
  • the apparatus 1700 is the first terminal or a component of the first terminal, and the apparatus 1700 may include: a transceiver unit 1701 and a processing unit 1702.
  • the transceiving unit 1701 is configured to obtain the first parameter of the second terminal.
  • the processing unit 1702 is configured to determine that the first terminal is a cooperative terminal according to the first parameter of the second terminal, or determine that the first terminal is a target terminal.
  • the processing unit 1702 is configured to determine that the first terminal is a cooperative terminal according to the first parameter of the second terminal, or determine that the first terminal is a target terminal, including: When the value of the first parameter of a terminal is greater than the value of the first parameter of the second terminal, it is determined that the first terminal is a cooperative terminal; when the value of the first parameter of the first terminal is less than or equal to When the value of the first parameter of the second terminal is taken, it is determined that the first terminal is the target terminal.
  • the first parameter is related to the following parameters: a parameter related to a signal from a network device, and/or a parameter related to a terminal.
  • the parameter related to the signal from the network device includes one or more of the following: received power and frequency response flatness.
  • the parameters related to the terminal include one or more of the following: total battery capacity, number of antennas, maximum transmission power, receiver sensitivity, processor operation speed, memory capacity, heat dissipation capability, mobility capability, Remaining power, whether it is connected to a sufficient power supply, moving speed, whether it is the leader in the convoy, and the direction of movement of the vehicle.
  • the value of the first parameter satisfies the following formula:
  • P represents the first parameter
  • P_SS represents a parameter related to the network device signal
  • P_LO represents a parameter related to the terminal
  • ⁇ and ⁇ are predefined values, ⁇ >1, 0 ⁇ 1.
  • the value of the first parameter satisfies the following formula:
  • P represents the first parameter
  • P_SS represents a parameter related to the network device signal
  • P_LO represents a parameter related to the terminal
  • ⁇ and ⁇ are predefined values, ⁇ >1, 0 ⁇ 1.
  • the transceiving unit 1701 is further configured to obtain first information, where the first information is used to indicate the number of terminals in a terminal group, and the terminal group includes one cooperative terminal and at least one target terminal;
  • the processing unit 1702 is further configured to determine the group joining operation of the first terminal according to the number of terminals in the terminal group.
  • the processing unit 1702 is configured to determine the joining operation of the first terminal according to the number of terminals in the terminal group, including: determining when the number of terminals in the terminal group meets a preset condition The first terminal joins the group; when the number of terminals in the terminal group does not meet a preset condition, it is determined that the first terminal does not join the group.
  • that the number of terminals in the terminal group meets a preset condition includes: the number of terminals in the terminal group is less than a preset value.
  • the transceiving unit 1701 is further configured to send second information, where the second information is used to indicate one or more of the following: the first parameter of the first terminal, the first terminal , The number of terminals in the terminal group after the first terminal joins the group.
  • the transceiving unit 1701 is configured to send second information, including: the transceiving unit 1701 is configured to send the second information on a first resource, the first resource and the identification of the first terminal Related.
  • the transceiving unit 1701 is further configured to receive third information, where the third information includes first parameters and/or identification information corresponding to one or more target terminals.
  • the device 1700 may correspond to the method of the first terminal in the foregoing method embodiment, for example, the method in FIG. 3 to FIG. 6, and the foregoing and other management operations and/or management operations of each unit in the device 1700
  • the functions are to implement the corresponding steps of the method of the first terminal in the foregoing method embodiment, and therefore, the beneficial effects in the foregoing method embodiment can also be achieved. For the sake of brevity, details are not described here.
  • the device 1700 is a third terminal or a component of the third terminal, and the device 1700 may include: a transceiver unit 1701 and a processing unit 1702.
  • the transceiving unit 1701 is configured to obtain the first parameter of the fourth terminal, and the value of the first parameter of the fourth terminal is the maximum value among the values of the first parameters of the multiple target terminals in the terminal group, so
  • the terminal group includes one cooperative terminal and at least one target terminal.
  • the processing unit 1702 is configured to determine that the third terminal continues to manage the terminal group based on the first parameter of the fourth terminal, or determine that the third terminal sends fourth information to the fourth terminal .
  • the processing unit 1702 is configured to determine that the third terminal continues to manage the terminal group based on the first parameter of the fourth terminal, or determine that the third terminal sends to the fourth terminal
  • the fourth information includes: when the value of the first parameter of the fourth terminal is greater than the value of the first parameter of the third terminal, controlling the transceiver unit 1701 to send fourth information to the fourth terminal ,
  • the fourth information includes the first parameter and/or identification information corresponding to one or more target terminals in the terminal group; when the value of the first parameter of the fourth terminal is less than or equal to the third When the value of the first parameter of the terminal is taken, it is determined that the third terminal continues to manage the terminal group.
  • the transceiving unit 1701 is further configured to receive feedback information from the fourth terminal, where the feedback information is used to indicate a successful handover between the fourth terminal and the third terminal.
  • the first parameter is related to the following parameters: a parameter related to a signal from a network device, and/or a parameter related to a terminal.
  • the parameters related to the signal from the network device include one or more of the following: received power and frequency response flatness.
  • the parameters related to the terminal include one or more of the following: total battery capacity, number of antennas, maximum transmission power, receiver sensitivity, processor operation speed, memory capacity, heat dissipation capability, mobility capability, Remaining power, whether it is connected to a sufficient power supply, moving speed, whether it is the leader in the convoy, and the direction of movement of the vehicle.
  • the value of the first parameter satisfies the following formula:
  • P represents the first parameter
  • P_SS represents a parameter related to the network device signal
  • P_LO represents a parameter related to the terminal
  • ⁇ and ⁇ are predefined values, ⁇ >1, 0 ⁇ 1.
  • the value of the first parameter is determined by satisfying the following formula:
  • P represents the first parameter
  • P_SS represents a parameter related to the network device signal
  • P_LO represents a parameter related to the terminal
  • ⁇ and ⁇ are predefined values, ⁇ >1, 0 ⁇ 1.
  • the device 1700 may correspond to the method of the third terminal in the foregoing method embodiment, for example, the method in FIG. 7 and FIG. 8, and the above-mentioned and other management operations and/or the various modules in the device 1700
  • the functions are to implement the corresponding steps of the method of the third terminal in the foregoing method embodiment, and therefore, the beneficial effects in the foregoing method embodiment can also be achieved.
  • details are not described here.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components, and can also be system on chip (SoC), central processor unit (CPU), or network processor (network processor).
  • SoC system on chip
  • CPU central processor unit
  • network processor network processor
  • processor can also be a digital signal processing circuit (digital signal processor, DSP), can also be a microcontroller (microcontroller unit, MCU), can also be a programmable controller (programmable logic device, PLD) or other Integrated chip.
  • DSP digital signal processor
  • MCU microcontroller unit
  • PLD programmable controller
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the processing unit used to execute these technologies at a communication device can be implemented in one or more general-purpose processors, DSPs, digital signal processing devices, ASICs, Programmable logic device, FPGA, or other programmable logic device, discrete gate or transistor logic, discrete hardware component, or any combination of the above.
  • the general-purpose processor may be a microprocessor.
  • the general-purpose processor may also be any traditional processor, controller, microcontroller, or state machine.
  • the processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration. achieve.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic RAM
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM
  • the present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, the function of any of the foregoing method embodiments is realized.
  • This application also provides a computer program product, which, when executed by a computer, realizes the functions of any of the foregoing method embodiments.
  • the present application also provides a system, which includes the aforementioned one or more terminal devices (for example, a first terminal, a second terminal) and one or more network devices.
  • the present application also provides a system, which includes the aforementioned one or more terminal devices (for example, the third terminal, the fourth terminal) and one or more network devices.
  • the computer may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk, SSD)) etc.
  • system and “network” in this article are often used interchangeably in this article.
  • the term “and/or” in this article is only an association relationship describing the associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone In the three cases of B, A can be singular or plural, and B can be singular or plural.
  • the character "/" generally indicates that the associated objects before and after are in an "or” relationship.
  • At least one of! or "at least one of" as used herein means all or any combination of the listed items, for example, "at least one of A, B and C", It can mean: A alone exists, B alone exists, C exists alone, A and B exist at the same time, B and C exist at the same time, there are six cases of A, B and C at the same time, where A can be singular or plural, and B can Singular or plural, C can be singular or plural.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B based on A does not mean that B is determined only based on A, and B can also be determined based on A and/or other information.
  • the "pre-defined” in the embodiments of the present application can be understood as definition, pre-defined, stored, pre-stored, pre-negotiation, pre-configured, cured, or pre-fired.
  • the configuration in the embodiments of this application can be understood as being notified through RRC signaling, MAC signaling, and physical layer information, where the physical layer information can be transmitted through PDCCH or PDSCH.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

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Abstract

La présente invention concerne un procédé de communication et un appareil de communication, qui permettent à des terminaux de déterminer un chef de groupe d'un groupe de terminaux par eux-mêmes sans nécessiter la participation d'un dispositif de réseau dans le processus de regroupement de terminaux, réduisant ainsi les surdébits de signalisation et réduisant les délais. Le procédé comprend les étapes suivantes : un premier terminal acquiert un premier paramètre d'un deuxième terminal ; et le premier terminal détermine, en fonction du premier paramètre du deuxième terminal, que le premier terminal est un terminal coopératif ou un terminal cible.
PCT/CN2019/118876 2019-11-15 2019-11-15 Procédé de communication et appareil de communication Ceased WO2021092925A1 (fr)

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