WO2021204232A1 - 启动方法及装置、重选方法及装置、设备、存储介质 - Google Patents

启动方法及装置、重选方法及装置、设备、存储介质 Download PDF

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Publication number
WO2021204232A1
WO2021204232A1 PCT/CN2021/086085 CN2021086085W WO2021204232A1 WO 2021204232 A1 WO2021204232 A1 WO 2021204232A1 CN 2021086085 W CN2021086085 W CN 2021086085W WO 2021204232 A1 WO2021204232 A1 WO 2021204232A1
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Prior art keywords
communication node
interface
relay
relay function
priority
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PCT/CN2021/086085
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English (en)
French (fr)
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张博源
汪梦珍
刁雪莹
陈琳
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中兴通讯股份有限公司
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Priority to US17/918,041 priority Critical patent/US20230141478A1/en
Priority to EP21785687.1A priority patent/EP4135402A1/en
Priority to KR1020227039245A priority patent/KR20220166852A/ko
Priority to JP2022560225A priority patent/JP2023520891A/ja
Publication of WO2021204232A1 publication Critical patent/WO2021204232A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00837—Determination of triggering parameters for hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/03—Reselecting a link using a direct mode connection
    • H04W36/033—Reselecting a link using a direct mode connection in pre-organised networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/03—Reselecting a link using a direct mode connection
    • H04W36/037—Reselecting a link using a direct mode connection by reducing handover delay, e.g. latency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H04W36/322—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by location data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This application relates to the field of communications, such as a startup method and device, a reselection method and device, equipment, and storage medium.
  • the relative distance between the UEs that are in Sidelink communication may change, and it is no longer suitable for Sidelink communication, or the UE may return to network coverage. Status, no need to relay data through Sidelink.
  • two UEs that are communicating via cellular find close to each other. In order to reduce the load on the cellular network and reduce transmission delay, it is hoped that the data communication will be switched from cellular to Sidelink. In these cases, it is necessary to consider switching the service flow between Sidelink UEs between the Sidelink path and the cellular path. In the process of service flow switching, service continuity must be ensured, and users must not feel that the quality of communication services is degraded. Therefore, how to select and start and reselect the relay UE is a problem to be solved urgently.
  • the embodiment of the present application provides a starting method and device, a reselection method and device, equipment, and storage medium, which realize the selection of the relay UE and the reselection.
  • the embodiment of the present application provides a startup method, which is applied to a first communication node, and the first communication node is in a connected state or an idle state or an inactive state, including:
  • the relay function configuration information sent by the second communication node; start the corresponding relay function according to the comparison result of the relay function configuration information and the first current parameter value, where the first current parameter value includes: current measured value , Current business priority.
  • the embodiment of the present application also provides a startup method applied to the second communication node, including:
  • the relay function configuration information for the first communication node; send the relay function configuration information to the first communication node; the relay function configuration information is used to trigger the first communication node to start the relay service transmission function.
  • the embodiment of the present application also provides a reselection method, which is applied to a third communication node, and includes:
  • the second current parameter value of the current first communication node currently in communication is detected; and the current first communication node is reselected according to the second current parameter value.
  • the embodiment of the present application also provides a starting device, which is applied to the first communication node, and includes:
  • the receiver is configured to receive the relay function configuration information sent by the second communication node; the starter is configured to start the corresponding relay service transmission function according to the comparison result of the relay function configuration information and the first current parameter value,
  • the first current parameter value includes: current measurement value and current service priority.
  • An embodiment of the present application also provides a starting device, which is applied to a second communication node, and includes:
  • the first configuration module is configured to configure relay function configuration information for the first communication node; the transmitter is configured to send the relay function configuration information to the first communication node; and the relay function configuration information is used to trigger the first communication node.
  • a communication node activates the relay service transmission function.
  • An embodiment of the present application also provides a reselection device, which is applied to a third communication node, and includes:
  • the first detector is configured to detect the second current parameter value of the current first communication node currently in communication; the first reselector is configured to reselect the current first communication node according to the second current parameter value .
  • An embodiment of the present application also provides a device, including: a communication module, a memory, and one or more processors; the communication module is configured to perform between a first communication node, a second communication node, and a third communication node Communication interaction; the memory is configured to store one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors implement any of the foregoing embodiments The method described.
  • An embodiment of the present application also provides a storage medium, the storage medium stores a computer program, and the computer program is executed by a processor to implement the method described in any of the foregoing embodiments.
  • FIG. 1 is a schematic diagram of SideLink communication provided by an embodiment of the present application
  • FIG. 2 is a flowchart of a startup method provided by an embodiment of the present application.
  • FIG. 3 is a flowchart of another startup method provided by an embodiment of the present application.
  • FIG. 4 is a flowchart of a reselection method provided by an embodiment of the present application.
  • Figure 5 is a structural block diagram of a starting device provided by an embodiment of the present application.
  • Fig. 6 is a structural block diagram of another starting device provided by an embodiment of the present application.
  • FIG. 7 is a structural block diagram of a reselection device provided by an embodiment of the present application.
  • Fig. 8 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • Sidelink technology includes Sidelink discovery technology and Sidelink communication technology.
  • Sidelink discovery technology is used to determine/determine the proximity of two or more Sidelink user equipments (for example, within the range where Sidelink direct communication is possible) or to determine/determine that the first user equipment is adjacent to the second user equipment Technology.
  • Sidelink user equipment can discover each other by sending or receiving discovery signals/information. Under the coverage of a cellular network, the network can assist Sidelink user equipment in Sidelink discovery.
  • Sidelink communication technology refers to a technology in which part or all of the communication data between Sidelink user equipment can be directly communicated without going through the network infrastructure.
  • FIG. 1 is a schematic diagram of a SideLink communication provided by an embodiment of the present application. There are three main application use cases for Sidelink:
  • Use case 1 in Figure 1 can include the following two branches:
  • Sidelink communication It can be divided into Sidelink broadcast communication, Sidelink multicast communication, and Sidelink unicast communication.
  • UE-to-Network Relay transmission in weak/uncovered areas allows UE4 with poor signal quality to communicate with the network through nearby UE3 with network coverage. It can help operators expand coverage and increase capacity.
  • multi-hop communication between devices (UE-to-UE Relay) is allowed, as shown in use case 3 in Figure 1, the control plane between UE5, UE6 and UE7
  • the one-hop or multi-hop data communication is carried out with the user plane without going through the network infrastructure.
  • Service continuity For the Sidelink communication of use case 1, use case 2 and use case 3, as the UE moves, the relative distance between the UEs that are in Sidelink communication may change, and it is no longer suitable for Sidelink communication, or UE Back to the state of network coverage, there is no need to relay data through Sidelink.
  • two UEs that are communicating via cellular find close to each other. In order to reduce the load on the cellular network and reduce transmission delay, it is hoped that the data communication will be switched from cellular to Sidelink. In these cases, it is necessary to consider switching the service flow between Sidelink UEs between the Sidelink path and the cellular path. In the process of service flow switching, service continuity must be ensured, and users must not feel that the quality of communication services is degraded.
  • the embodiments of the present application provide a method for starting a relay UE and a method for reselection, which ensure service continuity and improve user experience.
  • FIG. 2 is a flowchart of a startup method provided by an embodiment of the present application.
  • This embodiment is applied to the first communication node.
  • the first communication node may be a relay UE (relay UE).
  • this embodiment includes: S110-S120.
  • S120 Start the corresponding relay function according to the comparison result of the relay function configuration information and the first current parameter value, where the first current parameter value includes: current measurement value and current service priority.
  • the first communication node may determine whether to start the first communication node according to the comparison result of the relay function configuration information and the first current parameter value. Relay function, thus ensuring the continuity of service.
  • the second communication node is the network side, for example, it may be a base station or a New Radio-Radio Access Network (NR-RAN), which is not limited.
  • the relay function configuration information refers to related configuration information of the relay function that the first communication node can support.
  • the first current parameter value may include: current measurement value and current service priority.
  • the current measurement value may include: Reference Signal Receiving Power (RSRP) measurement value on Uu interface, resource pool busyness measurement value, and driving speed measurement value; current service priority may include: Uu interface Service priority value, the service priority value on the direct link interface (PC5 interface).
  • RSRP Reference Signal Receiving Power
  • current service priority may include: Uu interface Service priority value, the service priority value on the direct link interface (PC5 interface).
  • the Uu interface refers to the interface between the first communication node and the second communication node.
  • the relay function configuration information includes at least one of the following information: user equipment UE to network relay function configuration information; UE to UE relay function configuration information.
  • the UE-to-network relay function configuration information refers to the configuration information corresponding to the first communication node supporting the UE-to-network relay function; the UE-to-UE relay function configuration information refers to the first communication node Support the configuration information corresponding to the UE-to-UE relay function.
  • the second communication node supporting the relay function is selected.
  • the first communication node judges whether the second communication node supports the relay function of the UE to the network by at least one of the following methods:
  • the configuration information related to the relay function of the UE to the network is received within the current coverage of the second communication node, and the configuration information is included in the System Information Block (SIB) message of the Internet of Vehicles (Vehicle to Everything, V2X) In the current or independent SIB message; the current serving cell indicated in SIB1, SIB2, or SIB4 is received within the current coverage area of the second communication node, indicating that the current serving cell supports the relay function of the UE to the network; Receive physical random access channel (Physical Random Access Channel, PRACH) resources dedicated to the relay function of the UE to the network within the coverage area; receive a relay dedicated to the UE to the network within the current coverage area of the second communication node The access category and access identification of the function.
  • SIB System Information Block
  • V2X Vehicle to Everything
  • the location where the UE to Network (UE to Network, U2N) relay function configuration information is included includes one of the following: V2X SIB message; UE to UE (U2U); independent SIB message.
  • the V2X SIB message includes U2N and U2U relay function configuration information; or, U2N relay function configuration information and U2U relay function configuration information are two independently configured information; or, U2N medium
  • the relay function configuration information and U2U relay function configuration information are combined into one SIB message; or the V2X SIB message includes U2N relay function configuration information and U2U relay function configuration information independently configured.
  • the first communication node judges whether the second communication node supports the UE-to-UE relay function by at least one of the following methods:
  • the configuration information related to the relay function from the UE to the UE is received within the coverage of the current second communication node, and the configuration information is included in the SIB message of V2X or the SIB message of the UE to the network relay or an independent SIB message ; Receive the indication that the current serving cell indicated in SIB1, SIB2, or SIB4 supports the UE-to-UE relay function within the coverage of the current second communication node; receive the indication information dedicated to the UE in the coverage of the current second communication node.
  • the PRACH resource of the relay function from the UE to the UE; the access category and the access identifier dedicated to the relay function from the UE to the UE are received within the coverage of the current second communication node.
  • the location where the U2U relay function configuration information is included includes one of the following: V2X SIB message; U2N; independent SIB message.
  • the V2X SIB message includes U2N and U2U relay function configuration information; or, U2N relay function configuration information and U2U relay function configuration information are two independently configured information; or, U2N medium
  • the relay function configuration information and U2U relay function configuration information are combined into one SIB message; or, the V2X SIB message includes U2N relay function configuration information and U2U relay function configuration information independently configured.
  • the startup method applied to the first communication node further includes: selecting a corresponding frequency point that supports the relay function according to the included position of the relay function configuration information.
  • the frequency point corresponding to the relay function is selected according to the storage location of the relay function configuration information, including one of the following :
  • the UE-to-network relay function configuration information is in a separate SIB message, the frequency that supports the UE-to-network relay function is preferred; the UE-to-network relay function configuration information is in the V2X SIB message In the case of NR, it is preferred to support the relay function from the UE to the network, and to support the frequency point of NR V2X.
  • the frequency point corresponding to the relay function is selected according to the included position of the relay function configuration information, including the following: one:
  • the UE-to-UE relay function configuration information is in a separate SIB message, the frequency point that supports the UE-to-network relay function is preferred; the UE-to-UE relay function configuration information is in the V2X SIB message In the case of the UE-to-UE relay function, and support the frequency of NR V2X; when the UE-UE relay function configuration information is in the SIB message from the UE to the network relay, the priority is selected to support UE-to-UE relay function, and support the frequency of the UE-to-network relay function; when the UE-to-UE relay function configuration information is in the UE-to-network relay SIB message and V2X SIB message, It is preferred to support the UE-to-UE relay function, support the UE-to-network relay function, and support NR V2X frequency points.
  • the configuration information of the relay function from the UE to the network includes at least one of the following:
  • RSRP threshold of the reference signal received power on the Uu interface RSRP threshold on the direct link interface (PC5 interface); business priority threshold on the Uu interface; business priority threshold on the PC5 interface; Resource pool busyness threshold; absolute speed threshold; Uu interface is the interface between the first communication node and the second communication node.
  • starting the corresponding relay function according to the comparison result of the relay function configuration information and the first current parameter value includes at least one of the following:
  • the relay function from the UE to the network is activated; the RSRP measurement value on the PC5 interface If it is less than or equal to the maximum threshold value and greater than or equal to the minimum threshold value, the relay function from the UE to the network is started; when the priority value of all services on the Uu interface is greater than or less than the priority threshold value of the service , Start the relay function from the UE to the network; when the priority value of all non-relay services on the PC5 interface is greater than or less than the service priority threshold, start the relay function from the UE to the network; in the resource pool busyness When the measured value is lower or higher than the resource pool busyness threshold, start the relay function of the UE to the network; when the driving speed of the first communication node is lower than or greater than the absolute speed threshold, start the UE Re
  • the UE-to-UE relay function configuration information includes at least one of the following:
  • RSRP threshold on the Uu interface RSRP threshold on the PC5 interface
  • business priority threshold on the Uu interface business priority threshold on the PC5 interface
  • resource pool busy and idle threshold absolute Speed threshold.
  • starting the corresponding relay function according to the comparison result of the relay function configuration information and the first current parameter value includes at least one of the following:
  • the UE to UE relay function When the RSRP measurement value on the Uu interface is less than or equal to the maximum threshold minus the hysteresis value, and/or is greater than or equal to the minimum threshold plus the hysteresis value, the UE to UE relay function is activated; the RSRP measurement value on the PC5 interface If it is less than or equal to the maximum threshold value and greater than or equal to the minimum threshold value, the UE-to-UE relay function is activated; when the priority value of all services on the Uu interface is greater than the service priority threshold value, it is activated UE to UE relay function; when the priority value of all non-relay services on the PC5 interface is greater than the service priority threshold, the UE to UE relay function is activated; the measured value of the resource pool busyness is lower than the service priority threshold. In the case of the resource pool busyness threshold, the UE to UE relay function is activated; in the case where the driving speed of the first communication node is less than the absolute speed threshold, the
  • the first communication node satisfies the relay UE selection criterion information pre-configured or configured by the second communication node.
  • the startup method applied to the first communication node further includes: broadcasting the relay UE selection criterion information to the third communication node through a discovery message or a direct communication request message.
  • the relay UE selection criterion information includes one of the following: the RSRP measurement value on the PC5 interface is greater than the RSRP threshold; Uu The current service priority on the interface is the highest service priority; the current service priority on the PC5 interface is the highest priority; the domain address indication information in the synchronization cell indication (SCI) information; the resource scheduling mode is the pre-configuration mode; Uu wireless Access technology (Radio Access Technology, RAT) indication information; new radio access cell global identifier (NRCell Global Identifier, NCGI) information; relay priority indication information.
  • the RSRP measurement value on the PC5 interface is greater than the RSRP threshold
  • Uu The current service priority on the interface is the highest service priority
  • the current service priority on the PC5 interface is the highest priority
  • the resource scheduling mode is the pre-configuration mode
  • NRCell Global Identifier, NCGI new radio access cell global
  • the relay UE selection criterion information includes one of the following: the RSRP measurement value on the PC5 interface is greater than the RSRP threshold; The RSRP measurement value between the first communication node and the third communication node is the largest; the current service priority on the Uu interface is the highest priority; the current service priority on the PC5 interface is the highest priority; the domain address indication information in the SCI information ; The resource scheduling mode is a pre-configured mode; Uu RAT indication information; NCGI information; relay priority indication information.
  • FIG. 3 is a flowchart of another startup method provided by an embodiment of the present application. This embodiment is applied to the second communication node.
  • the second communication node is the network side, for example, it may be a base station or NR-RAN. As shown in Figure 3, this embodiment includes: S210-S220.
  • S220 Send the relay function configuration information to the first communication node; the relay function configuration information is used to trigger the first communication node to start the relay service transmission function.
  • the second communication node configures the relay function configuration information for the first communication node, and sends the relay function configuration information to the first communication node, so that the first communication node determines whether to start according to the relay function configuration information Its own relay function.
  • the startup method applied to the second communication node further includes: configuring the relay UE selection criterion information for the third communication node.
  • the relay function configuration information includes at least one of the following information: user equipment UE to network relay function configuration information; UE to UE relay function configuration information.
  • At least one of the following methods is used to determine whether the second communication node supports the relay function of the UE to the network:
  • the configuration information related to the relay function of the UE to the network is received within the current coverage area of the second communication node, and the configuration information is included in the V2X SIB message or an independent SIB message; in the current coverage area of the second communication node Receive the indication information indicating that the current serving cell in SIB1, SIB2, or SIB4 supports the relay function of the UE to the network; receive the PRACH resource dedicated to the relay function of the UE to the network within the current coverage of the second communication node ; Receive the access category and access identifier dedicated to the relay function of the UE to the network within the current coverage of the second communication node.
  • the location where the U2N relay function configuration information is included includes one of the following: V2X SIB message; UE to UE (U2U); independent SIB message.
  • At least one of the following methods is used to determine whether the second communication node supports the UE-to-UE relay function:
  • the configuration information related to the relay function from the UE to the UE is received within the coverage of the current second communication node, and the configuration information is included in the SIB message of V2X or the SIB message of the UE to the network relay or an independent SIB message ; Receive the indication that the current serving cell indicated in SIB1, SIB2, or SIB4 supports the UE-to-UE relay function within the coverage of the current second communication node; receive the indication information dedicated to the UE in the coverage of the current second communication node.
  • the PRACH resource of the relay function from the UE to the UE; the access category and the access identifier dedicated to the relay function from the UE to the UE are received within the coverage of the current second communication node.
  • the location where the U2U relay function configuration information is included includes one of the following: V2X SIB message; U2N; independent SIB message.
  • the configuration information of the relay function from the UE to the network includes at least one of the following:
  • RSRP threshold of the reference signal received power on the Uu interface RSRP threshold on the direct link interface (PC5 interface); business priority threshold on the Uu interface; business priority threshold on the PC5 interface; Resource pool busyness threshold; absolute speed threshold; Uu interface is the interface between the first communication node and the second communication node.
  • the UE-to-UE relay function configuration information includes at least one of the following:
  • RSRP threshold on the Uu interface RSRP threshold on the PC5 interface
  • business priority threshold on the Uu interface business priority threshold on the PC5 interface
  • resource pool busy and idle threshold absolute Speed threshold.
  • the startup method applied to the second communication node further includes: configuring the relay UE selection criterion information for the first communication node.
  • the relay UE selection criterion information includes one of the following: the RSRP measurement value on the PC5 interface is greater than the RSRP threshold; Uu The current service priority on the interface is the highest service priority; the current service priority on the PC5 interface is the highest priority; the domain address indication information in the SCI information; the resource scheduling mode is the pre-configured mode; Uu RAT indication information; NCGI information ; Relay priority indication information.
  • the relay UE selection criterion information includes one of the following: the RSRP measurement value on the PC5 interface is greater than the RSRP threshold; The RSRP measurement value between the first communication node and the third communication node is the largest; the current service priority on the Uu interface is the highest priority; the current service priority on the PC5 interface is the highest priority; the domain address indication information in the SCI information ; The resource scheduling mode is a pre-configured mode; Uu RAT indication information; NCGI information; relay priority indication information.
  • the explanation of the relay function configuration information and the selection criterion information of the relay UE can be found in the description of the activation method applied to the first communication node in the above embodiment, which will not be repeated here.
  • the relay UE1 in the process of selecting the relay UE1 for relay service transmission by the third communication node, the relay UE1 is no longer suitable for performing relay service transmission due to some reasons.
  • the third communication node may Reselect the relay UE.
  • a reselection method is proposed in this embodiment.
  • Fig. 4 is a flowchart of a reselection method provided by an embodiment of the present application. This embodiment is applied to the third communication node.
  • the third communication node may be a remote UE.
  • the reselection method in this embodiment includes: S310-S320.
  • S320 Reselect the current first communication node according to the second current parameter value.
  • the third communication node detects the second parameter value of the current first communication node currently at the communication node, and determines whether to reselect the current first communication node according to the second current parameter value, thereby ensuring the relay The normal transmission of business.
  • the second current parameter value when the first communication node is connected to the network, includes at least one of the following: the RSRP measurement value on the Uu interface is less than the RSRP threshold value on the Uu interface; the current power Less than the preset power threshold; the RSRP measurement value on the PC5 interface between the first communication node and the third communication node is less than the RSRP threshold on the PC5 interface; the priority of the service on the Uu interface is greater than the service on the Uu interface Priority threshold; the business priority on the PC5 interface is greater than the business priority threshold on the PC5 interface.
  • the second current parameter value when the first communication node accesses the UE, includes at least one of the following: the RSRP measurement value on the Uu interface is less than the RSRP threshold value on the Uu interface; the current power Less than the preset power threshold; the RSRP measurement value on the PC5 interface between the first communication node and the third communication node is less than the RSRP threshold on the PC5 interface; the priority of the service on the Uu interface is greater than the service on the Uu interface Priority threshold; the service priority on the PC5 interface is greater than the service priority threshold on the PC5 interface; the RSRP measurement value between the first communication node and the opposite third communication node is less than the RSRP threshold on the PC5 interface Value; Uu RAT indication information; NCGI information; relay priority indication information.
  • the reselection method applied to the third communication node further includes: detecting a discovery message, a connection establishment request message, or a connection establishment sent by a first communication node other than the first communication node currently in communication Response message: The first communication node is reselected according to the first preset message carried in the discovery message, connection establishment request message, or connection establishment response message.
  • the first preset message when the first communication node accesses the network, includes at least one of the following: the service priority on the Uu interface is lower than the service priority of the first communication node in the current communication ; The service priority on the PC5 interface is less than the service priority of the first communication node in the current communication; the RSRP measurement value is greater than the RSRP measurement value between the first communication node in the current communication; the zone identifier (ID) information in the SCI message The indication is the closest node; the resource scheduling mode is the priority mode; Uu RAT indication information; NCGI information; relay priority indication information.
  • the first preset message when the first communication node accesses the UE, includes at least one of the following: the service priority on the Uu interface is lower than the service priority of the first communication node in the current communication ; The service priority on the PC5 interface is less than the service priority of the first communication node in the current communication; the RSRP measurement value is greater than the RSRP measurement value between the first communication nodes in the current communication; the zone ID information in the SCI message indicates the closest distance
  • the resource scheduling mode is priority mode; Uu RAT indication information; NCGI information; relay priority indication information.
  • the network side supports the NR UE-to-Network relay function (UE-to-Network relay), that is, the network side meets the following requirements At least one of the conditions:
  • the configuration information related to the relay function of the UE to the network is received within the current coverage of the second communication node, and the configuration information is included in the system message block SIB message of the Internet of Vehicles V2X or an independent SIB message; in the second communication In the current coverage area of the node, the indication information that the current serving cell indicated in SIB1, SIB2 or SIB4 supports the relay function of the UE to the network is received; in the current coverage area of the second communication node, it receives the information dedicated to the UE to the network.
  • the physical random access of the relay function to the PRACH resource; the access category and the access identifier dedicated to the relay function of the UE to the network are received within the current coverage of the second communication node.
  • the current cell is a cell that supports the UE-to-Network relay function.
  • the configuration information of the related UE-to-Network relay can be placed in the SIB message of V2X, or the configuration information of the related UE-to-Netowrk relay can be placed in a single SIB message.
  • the indication information can be carried in SIB1, SIB2, or SIB4 (indication information is used to indicate that the current serving cell supports the UE-to-Network relay function), and the UE is in SIB1, SIB2, or SIB2. Or if the indication information is read in SIB4, the access cell enters the connected state and obtains UE-to-Network relay-related configuration information through dedicated signaling.
  • the network side can configure a PRACH resource dedicated to UE-to-Network relay for the relay UE.
  • the network side can configure the access category and access identifier dedicated to the UE-to-Network relay for the relay UE.
  • the network side (for example, a base station) supports the NR UE-to-UE relay function (UE-to-UE relay), that is, the network The side meets at least one of the following conditions:
  • the configuration information related to the relay function from the UE to the UE is received within the coverage of the current second communication node, and the configuration information is included in the SIB message of V2X or the SIB message of the UE to the network relay or an independent SIB message ; Receive the indication that the current serving cell indicated in SIB1, SIB2, or SIB4 supports the UE-to-UE relay function within the coverage of the current second communication node; receive the indication information dedicated to the UE in the coverage of the current second communication node Physical random access to the PRACH resource for the UE-to-UE relay function; the access category and access identifier dedicated to the UE-to-UE relay function are received within the coverage of the current second communication node.
  • the current cell is a cell that supports the UE-to-UE relay function.
  • the related UE-to-UE relay configuration information can be placed in the V2X SIB message, or the related UE-to-UE relay configuration information can be placed in the UE-to-Network relay SIB message , Or the related UE-to-UE relay configuration information can be put in a separate SIB message.
  • the network side If the network side supports the UE-to-UE relay function, it can carry indication information in SIB1, SIB2, or SIB4 (indication information is used to indicate that the current serving cell supports the UE-to-UE relay function), and the UE is in SIB1, SIB2, or SIB4. Or if the indication information is read in SIB4, the access cell enters the connected state, and the UE-to-UE relay-related configuration information is obtained through dedicated signaling.
  • the network side can configure a PRACH resource dedicated to UE-toUE relay for the relay UE.
  • the network side can configure the access category and access identifier dedicated to UE-toUE relay for the relay UE.
  • the frequency point corresponding to the relay function is selected according to the included position of the relay function configuration information.
  • the relay function configuration information is the configuration information of the relay function from the UE to the network
  • the relay UE when the relay UE performs cell selection, it preferentially selects authorized frequencies that support UE-to-Network relay, including One of the following:
  • the frequency point that supports the relay function from the UE to the network is preferentially selected.
  • the UE preferentially selects the one that supports the UE-to-Network relay Frequency.
  • the configuration information of the relay function from the UE to the network is in the SIB message of V2X
  • the UE-to-Network relay configuration information is in the V2X-related SIB message, and the UE is capable of performing UE-to-Network relay services, the UE prefers to support both UE-to-Network
  • the relay also supports the frequency of NR V2X.
  • the UE when the relay function configuration information is the configuration information of the relay function from the UE to the UE, the UE preferentially selects the frequency points that can be authorized to support UE-to-UE relay when performing cell selection, including the following one:
  • the frequency point that supports the UE-to-UE relay function is preferentially selected.
  • the UE-to-UE relay configuration information is in a separate SIB message, and the UE is capable of performing UE-to-UE relay services, the UE preferentially selects the one that supports UE-to-UE relay Frequency.
  • the UE-to-UE relay function configuration information is in the V2X SIB message
  • priority is given to supporting the UE-to-UE relay function and the frequency of NR V2X.
  • the UE-to-UE relay configuration information is in the V2X-related SIB message, and the UE is capable of performing UE-to-UE relay services, the UE prefers to support both UE-to-UE The relay also supports NR V2X frequency points.
  • the frequency points that support the UE-to-UE relay function and support the UE-to-network relay function are preferentially selected.
  • the UE-to-UE relay configuration information is in the UE-to-Network relay-related SIB message, and the UE has the ability to perform the UE-to-UE relay service, the UE prefers to support both UE-to -The UE relay also supports the frequency of the UE-to-Network relay.
  • the UE-to-UE relay function configuration information is in the UE-to-network relay SIB message and the V2X SIB message, priority is given to supporting the UE-to-UE relay function and the UE-to-network relay function, and Support NR V2X frequency points.
  • the UE-to-UE relay configuration information is in the UE-to-Network relay and V2X-related SIB messages, and the UE is capable of performing UE-to-UE relay services, the UE prefers to select It supports both UE-to-UE relay and UE-to-Netowrk relay and V2X-related frequency points.
  • the base station configures the relay UE with corresponding relay function configuration information to assist the relay UE in determining whether its current parameter value conforms to the relay function configuration information of the relay UE.
  • the base station provides relay function configuration information to the relay UE to assist the relay UE in determining whether it is currently suitable for acting as a relay UE.
  • the configuration information of the relay function from the UE to the network includes at least one of the following:
  • RSRP threshold of the reference signal received power on the Uu interface RSRP threshold on the PC5 interface of the through link interface
  • business priority threshold on the Uu interface business priority threshold on the PC5 interface
  • resource pool Threshold of busy and idle degree Absolute speed threshold
  • Uu interface is the interface between the first communication node and the second communication node.
  • the base station may configure the RSRP threshold on the Uu interface for the UE, including the maximum threshold and/or the minimum threshold.
  • a hysteresis value may be included.
  • the UE When the UE becomes a relay UE, when the RSRP measurement value on the Uu interface measured by the UE is greater than or equal to the maximum threshold plus the hysteresis value, or less than or equal to the minimum threshold minus the hysteresis value, the UE cannot act as a relay UE .
  • the base station can configure the RSRP threshold on the PC5 interface for the UE, including the maximum threshold and the minimum threshold.
  • the UE measures the RSRP of the direct communication request message sent by other UEs or the RSRP of the discovery message, When the RSRP measurement value is less than or equal to the maximum threshold value and at the same time greater than or equal to the minimum threshold value, the UE can become a relay UE, thereby ensuring the link quality when the relay UE transmits, thereby ensuring the reliability of service transmission.
  • the base station can configure the service priority threshold on the Uu interface for the UE (for example, the priority indicator can be 5QI (PC5 5QI, PQI) on the PC5 interface, the fifth-generation mobile communication system service quality identifier (the 5th Generation mobile communication system Quality of Service Identifier, 5G QoS ID, 5QI), priority), when the priority value of all services of the UE on the Uu interface is higher than the service priority threshold (the higher the priority value is) Higher, the lower the service priority), the UE can become a relay UE.
  • the priority indicator can be 5QI (PC5 5QI, PQI) on the PC5 interface, the fifth-generation mobile communication system service quality identifier (the 5th Generation mobile communication system Quality of Service Identifier, 5G QoS ID, 5QI), priority)
  • the priority value of all services of the UE on the Uu interface is higher than the service priority threshold (the higher the priority value is) Higher, the lower the service priority)
  • the UE can become a relay
  • the base station can configure the service priority threshold on the PC5 interface for the UE (for example, the priority indicator can be PQI, 5QI, priority), when the UE has all non-relay services on the PC5 interface
  • the priority values are higher than the service priority threshold (the higher the priority value, the lower the service priority)
  • the UE can become a relay UE.
  • the base station may configure a resource pool busyness threshold (Channel Busy Rate (CBR) Threshold) for the UE.
  • CBR Channel Busy Rate
  • the UE can use the resource pool to transmit relay services, thereby avoiding the probability of the UE selecting resources that collide with other UEs during transmission, and ensuring the reliability of UE transmission.
  • the base station may configure an absolute speed threshold for the UE.
  • the traveling speed of the UE is less than the configured absolute speed threshold, the UE may become a relay UE.
  • the UE to UE relay function configuration information includes at least one of the following: RSRP threshold on the Uu interface; RSRP threshold on the PC5 interface; service priority threshold on the Uu interface ; The business priority threshold on the PC5 interface; the busy and idle threshold of the resource pool; the absolute speed threshold.
  • the base station may configure the RSRP threshold on the Uu interface for the UE, including the maximum threshold and/or the minimum threshold.
  • a hysteresis value may be included.
  • the UE When the UE becomes a relay UE, when the RSRP measurement value on the Uu interface measured by the UE is greater than or equal to the maximum threshold plus the hysteresis value, or less than or equal to the minimum threshold minus the hysteresis value, the UE cannot act as a relay UE In this way, the link quality during relay UE transmission can be guaranteed, thereby ensuring the reliability of service transmission.
  • the base station can configure the RSRP threshold on the PC5 interface for the UE, including the maximum RSRP threshold and/or minimum RSRP threshold between the UE and remote UE1, and the maximum RSRP threshold between the UE and remote UE2.
  • RSRP threshold and minimum RSRP threshold may be included.
  • the RSRP measurement value between the UE and the remote UE1 is greater than or equal to the configured minimum RSRP threshold plus the hysteresis value and less than or equal to the configured maximum RSRP threshold minus the hysteresis value, and at the same time with remote UE2 If the measured RSRP value between the two is greater than or equal to the configured minimum RSRP threshold plus hysteresis and less than or equal to the configured maximum RSRP threshold minus the hysteresis, the UE can become a relay UE, which can guarantee relay The link quality during UE transmission, so as to ensure the reliability of service transmission.
  • the base station may configure the service priority threshold value on the Uu interface for the UE (for example, the priority indicator may be PQI, 5QI, priority), when the UE has all service priority values on the Uu interface When both are higher than the service priority threshold (the higher the priority value, the lower the service priority), the UE can become a relay UE.
  • the service priority threshold value for example, the priority indicator may be PQI, 5QI, priority
  • the base station can configure the service priority threshold on the PC5 interface for the UE (for example, the priority indicator can be PQI, 5QI, priority), when the UE has all non-relay services on the PC5 interface
  • the priority values are higher than the service priority threshold (the higher the priority value, the lower the service priority)
  • the UE can become a relay UE.
  • the base station may configure a resource pool busyness threshold for the UE.
  • the measured value of the busyness degree measured by the UE on the configured resource pool is lower than the configured resource pool busyness threshold, The UE can use the resource pool to transmit the relay service, so that the probability of the UE selecting resources that collide with other UEs during transmission can be avoided, and the reliability of UE transmission can be ensured.
  • the base station may configure an absolute speed threshold for the UE. In the case where the traveling speed of the UE is less than the configured absolute speed threshold, the UE may become a relay UE.
  • the RSRP threshold on the PC5 interface the service priority threshold on the PC5 interface, and the configuration information of the resource pool busyness threshold in the above embodiment
  • it can also be delivered to the UE in a pre-configured manner.
  • the first communication node satisfies the relay UE selection criterion information pre-configured or configured by the second communication node.
  • the third communication node for example, the remote UE
  • the remote UE can read the relay UE selection criterion information configured or pre-configured by the base station, thereby selecting the one that satisfies the following conditions: Following UE.
  • the relay UE selection criterion information includes one of the following: the RSRP measurement value on the PC5 interface is greater than the RSRP threshold; the Uu interface The current service priority is the highest service priority; the current service priority on the PC5 interface is the highest priority; the domain address indication information in the SCI information; the resource scheduling mode is the pre-configuration mode; the Uu radio access technology (RAT) indication Information; current serving cell identity (NCGI) information; relay priority indication information.
  • RAT radio access technology
  • NCGI current serving cell identity
  • the base station configures the RSRP threshold on the PC5 interface for the remote UE, and the remote UE performs the PC5 interface RSRP measurement on the surrounding relay UEs to obtain the RSRP measurement value on the PC5 interface.
  • the discovery message or the direct communication request message or the direct communication response message sent by the relay UE is screened out to select all the relay UEs whose RSRP measurement value is greater than the RSRP threshold as candidate relay UEs. Then, the remote UE may sort the RSRP measurement values of the candidate relay UEs, and select the candidate relay UE corresponding to the largest RSRP measurement value as the last selected relay UE.
  • the relay UE selection criterion information is that the current service priority on the Uu interface is the highest service priority.
  • the relay UE carries the highest priority indication of the current service of the Uu interface in the discovery message, connection establishment request message, and connection establishment response message (for example, the priority indication can be PQI, 5QI, priority), and the remote UE reads the surrounding relay
  • the UE discovers the highest priority indication in the message, and selects the relay UE corresponding to the largest priority indication (the larger the priority indication value is, the lower the service priority of the Uu interface of the relay UE is).
  • the relay UE when the relay UE selection criterion information is that the current service priority on the PC5 interface is the highest priority.
  • the relay UE carries the highest priority indication of the current service of the PC5 interface in the discovery message, connection establishment request message, and connection establishment response message (for example, the priority indication may be PQI, 5QI, priority), and the remote UE Read the highest priority indication in the discovery message, connection establishment request message, and connection establishment response message of surrounding relay UEs, and select the relay UE corresponding to the largest priority indication (the higher the priority indication value, the higher the priority indication). The lower the service priority of the PC5 interface following the UE).
  • the remote UE when the relay UE selection criterion information is the domain address indication information in the SCI information.
  • the remote UE reads the SCI information corresponding to the discovery message, connection establishment request message, and connection establishment response message sent by the surrounding relay UE, and reads the indication information of the zone ID of the relay UE from the SCI. , The remote UE preferentially selects the relay UE closest to itself.
  • the relay UE selection criterion information is that the resource scheduling mode is a pre-configured mode.
  • the pre-configuration mode can be mode 1 and mode 2.
  • the relay UE carries its own resource scheduling mode in the discovery message, connection establishment request message, and connection establishment response message. After the remote UE reads the discovery message of the relay UE, it preferentially selects the mode according to its own resource scheduling mode. 1 or Mode 2 relay UE.
  • the relay UE selection criterion information is Uu radio access technology (RAT) indication information, current NCGI information or relay priority indication information.
  • the relay UE carries the Uu RAT indication (for example, Long Term Evolution (LTE), NR, multi-radio technology dual connection) in the discovery message, discovery additional message, connection establishment request message, and connection establishment response message.
  • RAT radio access technology
  • Multi-RAT Dual Connectivity, MR-DC indication, dual-link (Dual Connectivity, DC) type (for example, ENDC, NEDC, or NGENDC), the UE selects the appropriate relay UE according to its own capabilities; NCGI (relay UE current Serving cell identification); relay priority indication, indicating the priority degree suitable for acting as a relay (for example, the higher the priority, the better the relay, such as its own power is sufficient, the Uu interface service is small, or the Uu interface has no High priority services, etc.).
  • NCGI relay UE current Serving cell identification
  • relay priority indication indicating the priority degree suitable for acting as a relay (for example, the higher the priority, the better the relay, such as its own power is sufficient, the Uu interface service is small, or the Uu interface has no High priority services, etc.).
  • ENDC refers to the dual connection of 4G wireless access network and 5G NR
  • NEDC refers to the dual connection of 5G NR and 4G wireless access network
  • NGENDC refers to the 4G wireless connection under the 5G core network. Dual connection between network access and 5G NR.
  • the remote UE when the remote UE initially selects the relay UE, the remote UE can read the base station or pre-configured relay selection criterion information, so as to select the relay UE that meets the following conditions.
  • the relay selection criterion information includes one of the following: the RSRP measurement value on the PC5 interface is greater than the RSRP threshold; the first communication node and the third communication node The RSRP measurement value is the largest; the current business priority on the Uu interface is the highest priority; the current business priority on the PC5 interface is the highest priority; the domain address indication information in the SCI information; the resource scheduling mode is the pre-configuration mode ; Uu RAT indication information; NCGI information; relay priority indication information.
  • the remote UE when the relay UE selection criterion information is that the RSRP measurement value on the PC5 interface is greater than the RSRP threshold.
  • the remote UE performs RSRP measurement on the PC5 interface on the discovery message, connection establishment request, message, or connection establishment response message sent by all surrounding relay UEs, and the remote UE can perform RSRP measurement on the candidate relay UE. Sort, and select the candidate relay UE corresponding to the largest RSRP measurement value as the last selected relay UE.
  • the relay UE selection criterion information is that the RSRP measurement value between the first communication node and the third communication node is the largest.
  • the relay UE carries the RSRP measurement value with the remote UE2 in the discovery message, the connection establishment request message or the connection establishment response message, and the remote UE1 can select the relay UE with the largest RSRP measurement value carried.
  • the selection criterion information of the relay UE is that the current service priority on the Uu interface is the highest priority.
  • the relay UE carries the Uu interface current service highest priority indication in the discovery message, connection establishment request message, and connection establishment response message, and the remote UE reads the discovery message, connection establishment request message, and connection of the surrounding relay UE. Establish the highest priority indicator in the response message, and select the relay UE corresponding to the largest priority indicator (the larger the priority indicator value, the lower the service priority of the Uu interface of the relay UE).
  • the relay UE selection criterion information is that the current service priority on the PC5 interface is the highest priority.
  • the relay UE carries the highest priority indication of the current service of the PC5 interface in the discovery message, connection establishment request, message or connection establishment response message (for example, the priority indication may be PQI, 5QI, priority), and the remote The UE reads the highest priority indicator in the discovery message, connection establishment request, message, or connection establishment response message of the surrounding relay UE (for example, the priority indicator can be PQI, 5QI, priority), and selects the corresponding largest The relay UE indicated by the priority (the larger the value of the priority indication, the lower the service priority of the PC5 interface of the relay UE).
  • the selection criterion information of the relay UE is the domain address indication information in the SCI information.
  • the remote UE reads the SCI carried in the discovery message, connection establishment request message, or connection establishment response message sent by the surrounding relay UE, and reads the indication information of the zone ID of the relay UE from the SCI, and the remote UE prefers to select The relay UE closest to itself.
  • the relay UE selection criterion information is that the resource scheduling mode is a pre-configured mode.
  • the relay UE carries its own resource scheduling mode in the discovery message or connection establishment request message or connection establishment response message. After the remote UE reads the discovery message of the relay UE, it preferentially selects the mode according to its own resource scheduling mode. 1 or Mode 2 relay UE.
  • the relay UE selection criterion information is Uu RAT indication information, NCGI information, or relay priority indication information.
  • the relay UE carries a Uu RAT indication (for example, LTE, NR, MR-DC indication, and DC type (for example, ENDC, NEDC) in the discovery message or discovery additional message, connection establishment request message, or connection request response message.
  • Uu RAT indication for example, LTE, NR, MR-DC indication, and DC type (for example, ENDC, NEDC) in the discovery message or discovery additional message, connection establishment request message, or connection request response message.
  • the UE selects the appropriate relay UE according to its own capabilities; NCGI (relay UE current serving cell identity); relay priority indicator, indicating the priority degree suitable for acting as a relay (for example, the higher the priority, it means It is a better relay, such as its own power is sufficient, the Uu interface has little service, or the Uu interface has no high-priority service, etc.).
  • NCGI relay UE current serving cell identity
  • relay priority indicator indicating the priority degree suitable for acting as a relay (for example, the higher the priority, it means It is a better relay, such as its own power is sufficient, the Uu interface has little service, or the Uu interface has no high-priority service, etc.).
  • a reselection method is proposed, which includes detecting the second current parameter value of the current first communication node currently in communication; and reselecting the current first communication node according to the second current parameter value.
  • the second current parameter value includes at least one of the following: the RSRP measurement value on the Uu interface is less than the RSRP threshold value on the Uu interface; the current power is less than The preset power threshold; the RSRP measurement value on the PC5 interface between the first communication node and the third communication node is less than the RSRP threshold on the PC5 interface; the service priority on the Uu interface is greater than the service priority on the Uu interface Level threshold; the service priority on the PC5 interface is greater than the service priority threshold on the PC5 interface.
  • the relay UE can actively initiate a relay UE reselection request due to at least one of the following conditions, and carry the corresponding cause value: the RSRP measurement value on the Uu interface has deteriorated, which is already smaller than the RSRP gate configured by the base station.
  • the relay UE1 sends data on the high-priority Uu interface Requirements (for example, the priority indicator can be PQI, 5QI, priority), the service priority on the Uu interface has exceeded the service priority threshold on the Uu interface configured by the base station; the relay UE1 has a high transmission Priority data requirements on the PC5 interface (for example, the priority indicator can be PQI, 5QI, priority), the service priority on the PC5 interface has exceeded the service priority threshold on the PC5 interface configured by the base station .
  • the priority indicator can be PQI, 5QI, priority
  • the remote UE itself may also initiate the reselection of the relay UE.
  • the remote UE when the remote UE has previously established a PC5-S/Radio Resource Control (Radio Resource Control, RRC) connection with the relay UE1, it continuously monitors the discovery messages, connection establishment request messages, or connection establishment request messages sent by other relay UEs around it. , Connection establishment response message, and judge whether other surrounding relay UEs are more suitable to act as a relay UE for it than the current relay UE1 according to some conditions.
  • RRC Radio Resource Control
  • the reselection method applied to the third communication node further includes: detecting a discovery message, a connection establishment request message, or a connection establishment response sent by a first communication node other than the first communication node currently in communication Message: The first communication node is reselected according to the first preset message carried in the discovery message, the connection establishment request message, or the connection establishment response message.
  • the first preset message when the first communication node accesses the network, includes at least one of the following: the service priority on the Uu interface is lower than the service priority of the first communication node in the current communication ; The service priority on the PC5 interface is less than the service priority of the first communication node in the current communication; the RSRP measurement value is greater than the RSRP measurement value between the first communication node in the current communication; the zone ID information in the SCI message indicates the closest distance Node; resource scheduling mode is priority mode; Uu RAT indication information; NCGI information; relay priority indication information.
  • the discovery message carries the priority indication of the Uu port service with the highest priority of the current relay UE.
  • the remote UE uses the priority indication to compare with the Uu port service priority of the relay UE1. After the service priority of the Uu interface of the UE is lower than the service priority of the relay UE1, the remote UE can be reselected to the corresponding other relay UE.
  • the discovery message carries the priority indication of the PC5 interface service with the highest priority of the current relay UE.
  • the remote UE uses the priority indication to compare with the priority indication of the PC5 interface service of the relay UE1. After the service priority of the PC5 interface of the UE is lower than the service priority of the relay UE1, the remote UE can be reselected to the corresponding other relay UE.
  • the remote UE measures the RSRP measurement value of the discovery message, connection establishment request message, or connection establishment response message sent by other relay UEs, which is higher than the RSRP measurement value between the remote UE and the corresponding relay UE1, then the remote UE It can be reselected to the corresponding other relay UE.
  • the remote UE can read the zone ID information in the SCI corresponding to the discovery message, connection establishment request message, or connection establishment response message sent by other relay UEs to determine the distance between the other relay UE and the remote UE. If the other relay UE is closer to the remote UE, the remote UE can reselect to the nearest other relay UE.
  • the resource scheduling mode information of the relay UE can be carried in the discovery message, the connection establishment request message, or the connection establishment response message.
  • the base station can configure the priority mode for the remote UE, and the remote UE can re-select the one that is configured as the priority mode.
  • Relay UE can be carried in the discovery message, the connection establishment request message, or the connection establishment response message.
  • the relay UE carries a Uu RAT indication (for example, LTE, NR, MR-DC indication, DC type--ENDC/NEDC/ NGENDC), the UE selects the appropriate relay UE according to its own capabilities; NCGI (relay UE current serving cell identity); relay priority indicator, indicating the priority degree suitable for acting as a relay (for example, the higher the priority, the more Excellent relay, such as its own power is sufficient/Uu interface has little service/Uu interface has no high-priority service, etc.).
  • a Uu RAT indication for example, LTE, NR, MR-DC indication, DC type--ENDC/NEDC/ NGENDC
  • NCGI relay UE current serving cell identity
  • relay priority indicator indicating the priority degree suitable for acting as a relay (for example, the higher the priority, the more Excellent relay, such as its own power is sufficient/Uu interface has little service/Uu interface has no high-priority service, etc.).
  • a reselection method which includes detecting the second current parameter value of the current first communication node currently in communication; and reselecting the current first communication node according to the second current parameter value.
  • the second current parameter value includes at least one of the following: the RSRP measurement value on the Uu interface is less than the RSRP threshold value on the Uu interface; the current power Less than the preset power threshold; the RSRP measurement value on the PC5 interface between the first communication node and the third communication node is less than the RSRP threshold on the PC5 interface; the priority of the service on the Uu interface is greater than the service on the Uu interface Priority threshold; the service priority on the PC5 interface is greater than the service priority threshold on the PC5 interface; the RSRP measurement value between the first communication node and the opposite third communication node is less than the RSRP threshold on the PC5 interface Value; Uu RAT indication information; NCGI information; relay priority indication information.
  • the relay UE may initiate a relay UE reselection request or a PC5-RRC link release message by the remote UE proactively due to at least one of the following conditions, and carry the corresponding cause
  • the RSRP measurement value on the Uu interface becomes worse and is less than the RSRP threshold configured by the base station; when the current power of the relay UE is too low and there is a need for power saving; RSRP measurement on the PC5 interface between the remote UE and the relay UE1 The value becomes worse; the relay UE1 needs to send data on the high-priority Uu interface, and the service priority on the Uu interface has exceeded the service priority threshold on the Uu interface configured by the base station; the relay UE1 sends Data requirements on the high-priority PC5 interface.
  • the service priority on the PC5 interface has exceeded the service priority threshold on the PC5 interface configured by the base station; the RSRP measurement value between the relay UE1 and the remote UE2 has deteriorated , When it is less than the RSRP threshold configured by the base station; the relay UE carries the U RAT indication (for example, LTE, NR, MR-DC indication, DC Type--ENDC/NEDC/NGENDC), the UE selects the appropriate relay UE according to its own capabilities; NCGI (relay UE current serving cell identity); relay priority indicator, indicating the priority degree suitable for acting as a relay (such as priority The higher the value, the better the relay, such as its own battery is sufficient/the Uu interface has little service/the Uu interface has no high-priority service, etc.); in the embodiment, the relay UE discovers messages, discovers additional messages, and connects The establishment request message or the connection establishment response message carries the carrier aggregation configuration of the relay UE itself and/or the capability of frequency band combination.
  • the remote UE itself may also initiate the reselection of the relay UE.
  • the remote UE when it has established a PC5-RRC connection with the relay UE1 before, it will also continuously monitor the discovery messages sent by other relay UEs around it, and determine whether other relay UEs around it are better than the current one according to some conditions. Then UE1 is more suitable to act as a relay UE for it.
  • the reselection method applied to the third communication node further includes: detecting a discovery message, a connection establishment request message, or a connection establishment response sent by a first communication node other than the first communication node currently in communication Message: The first communication node is reselected according to the first preset message carried in the discovery message, the connection establishment request message, or the connection establishment response message.
  • the first preset message when the first communication node accesses the UE, includes at least one of the following: the service priority on the Uu interface is lower than the service priority of the first communication node in the current communication ; The service priority on the PC5 interface is less than the service priority of the first communication node in the current communication; the RSRP measurement value is greater than the RSRP measurement value between the first communication nodes in the current communication; the zone ID information in the SCI message indicates the closest distance
  • the resource scheduling mode is priority mode; Uu RAT indication information; NCGI information; relay priority indication information.
  • the discovery message carries the priority indication of the Uu port service with the highest priority of the current relay UE.
  • the remote UE uses the priority indication to compare with the Uu port service priority of the relay UE1. After the service priority of the Uu interface of the UE is lower than the service priority of the relay UE1, the remote UE can be reselected to the corresponding other relay UE.
  • the discovery message carries the priority indication of the PC5 interface service with the highest priority of the current relay UE.
  • the remote UE uses the priority indication to compare with the priority indication of the PC5 interface service of the relay UE1. After the service priority of the PC5 interface of the UE is lower than the service priority of the relay UE1, the remote UE can be reselected to the corresponding other relay UE.
  • the remote UE measures the RSRP measurement value of the discovery message sent by other relay UEs that is higher than the RSRP measurement value between the remote UE and the corresponding relay UE1, then the remote UE can reselect to the corresponding other relay UE .
  • the remote UE can read the zone ID information in the SCI corresponding to the discovery message sent by the other relay UE, and determine the distance between the other relay UE and the remote UE. If the other relay UE is closer to the remote UE , The remote UE can reselect to the nearest other relay UE.
  • the resource scheduling mode information of the relay UE may be carried in the discovery message, the base station may configure the priority mode for the remote UE, and the remote UE may reselect the relay UE configured as the priority mode.
  • the relay UE carries a Uu RAT indication (for example, LTE, NR, MR-DC indication, DC type--ENDC/NEDC/ NGENDC), the UE selects the appropriate relay UE according to its own capabilities; NCGI (relay UE current serving cell identity); relay priority indicator, indicating the priority degree suitable for acting as a relay (for example, the higher the priority, it is expressed as a The better the relay, such as its own battery is sufficient/the Uu interface has little service/the Uu interface has no high-priority service, etc.); in the embodiment, the relay UE discovers messages or additional messages, connection establishment request messages, connection establishment The response message carries the carrier aggregation configuration and/or frequency band combination capability of the relay UE itself.
  • a Uu RAT indication for example, LTE, NR, MR-DC indication, DC type--ENDC/NEDC/ NGENDC
  • NCGI relay UE current serving cell identity
  • relay priority indicator indicating the priority degree suitable for acting as a relay (for
  • the remote UE1 may consider that it is no longer suitable for UE-to-UE relay services with the remote UE2 at this time. Therefore, the remote UE1 should send a remote UE release request to the relay UE1, instructing the relay UE1 to release the unicast link with the remote UE2, but the remote UE1 still has unsent data at this time. Therefore, the relay UE1 should perform remote UE reselection to find a remote UE2' that is interested in the current relay service.
  • the remote UE1 can configure a remote UE reselection timer for the relay UE1.
  • the remote UE1 instructs the relay UE1 to release the connection with the remote UE2
  • the reselection timer is started when the reselection timer expires, the relay UE1 still does not find a suitable remote UE2', the remote UE1 may consider reselecting the relay UE.
  • the remote UE2 triggers the relay UE reselection.
  • the remote UE2 when the quality of the link between the relay UE1 and the remote UE2 deteriorates, the remote UE2 actively releases the unicast link with the relay UE1.
  • the surrounding relay UEs all start to send messages carrying the remote UE1.
  • the remote UE2 performs RSRP measurement according to the discovery messages sent by different relay UEs, and selects the relay UE with the best RSRP measurement value as the new relay UE to be reselected.
  • a transmission method applied to a UE includes: receiving through-link security configuration information; and performing through-link communication transmission according to the through-link security configuration information.
  • the through link security configuration information includes at least one of the following: encryption indication; integrity protection indication.
  • the configuration granularity of the pass-through link security configuration information includes one of the following: configure pass-through link security configuration information for a specific communication target; configure pass-through link security configuration information for each pass-through link bearer.
  • the received through link security configuration information includes at least one of the following:
  • the method before performing the through link communication transmission according to the through link security configuration information, the method further includes: sending the through link security configuration information to the target UE through a PC5RRC message.
  • the direct link unicast communication supports encryption and integrity protection transmission of Sidelink (SL) signaling and data.
  • SL Sidelink
  • the base station configures the direct link security configuration information through RRC dedicated signaling or system message, and indicates whether the direct link unicast communication is encrypted and/or integrity protected transmission.
  • direct link security configuration information is configured in the pre-configuration information, indicating whether the direct link unicast communication is encrypted and/or integrity protected transmission.
  • the UE receives the sidelink security configuration information; the UE performs sidelink communication and transmission according to the sidelink security configuration information.
  • the sidelink security configuration information includes at least one of the following: an encryption instruction and an integrity protection instruction.
  • the configuration granularity of the sidelink security configuration information includes one of the following: configuring the sidelink security configuration information for a specific communication target; configuring the sidelink security configuration information for each sidelink bearer.
  • the sidelink security configuration information received by the UE includes at least one of the following:
  • the UE receives the sidelink security configuration information sent by the base station through RRC dedicated signaling or system messages; the UE receives the sidelink security configuration information in the pre-configuration information.
  • the method before the UE performs sidelink communication transmission according to the sidelink security configuration information, the method further includes:
  • the UE sends the sidelink security configuration information to the target UE through the PC5RRC message.
  • Sidelink unicast communication supports encryption and integrity protection transmission of SL signaling and data.
  • the base station may configure sidelink security configuration information through RRC dedicated signaling or system messages to indicate whether sidelink unicast communication is encrypted and or integrity protected transmission.
  • sidelink security configuration information may be configured in the pre-configuration information, indicating whether the sidelink unicast communication is encrypted and or integrity protected transmission.
  • the sidelink security configuration information includes at least one of the following: an encryption instruction and an integrity protection instruction.
  • the sidelink security configuration information may be configured for a specific communication target, that is, the sidelink security configuration information is applicable to all sidelink bearer data transmissions for the specific communication target or a specific unicast communication link; or, the sidelink security configuration The information can be configured for each sidelink bearer, that is, the sidelink security configuration information is carried in the sidelink bearer configuration information, indicating whether to perform encryption and or integrity protection transmission during the current sidelink bearer data transmission.
  • the UE performs sidelink communication transmission according to the sidelink security configuration information. If the sidelink security configuration information indicates to perform encryption and or integrity protection transmission for a specific communication target or a specific sidelink bearer, the UE will target all sidelinks of the specific communication target. Carrying data transmission or encrypting and/or integrity protection transmission for specific sidelink carrying data transmission.
  • the UE may send sidelink security configuration information to the target UE through PC5RRC signaling, so that the target UE can perform decryption and/or integrity protection verification accordingly. Receive data correctly.
  • the UE receives the PC5RRC response message sent by the target UE.
  • this embodiment provides a priority determination method, including: obtaining priority information of a through link channel state information (CSI) report; determining the priority of the through link report according to the priority information class.
  • CSI channel state information
  • the priority information of the through link CSI report includes: priority information of the through link CSI report that has not timed out; priority information of the through link CSI report that has timed out.
  • acquiring the priority information of the through link CSI report includes: acquiring the priority information of the through link CSI report through a pre-configuration method or receiving the priority information of the through link CSI report through the network side.
  • the priority information of the through link CSI report includes: the priority value of the through link CSI report that has not timed out; the priority value of the through link CSI report that has timed out.
  • the priority information of the through link CSI report includes: the priority of the timed through link CSI report is the lowest; or the priority logical channel of the timed through link CSI report.
  • the process of determining the priority includes step 1 to step 2.
  • Step 1 The UE obtains the priority information of the sidelink CSI report;
  • Step 2 The UE determines the priority of the sidelink CSI report.
  • the priority information of the sidelink CSI report includes the priority information of the sidelink CSI report that has not timed out and the priority information of the sidelink CSI report that has timed out.
  • obtaining the priority information of the sidelink CSI report by the UE includes: obtaining the priority information of the sidelink CSI report by the UE in a pre-configured manner or receiving the priority information of the sidelink CSI report through the network side.
  • the priority information of the sidelink CSI report includes: the priority value of the sidelink CSI report that has not timed out or the priority information value of the sidelink CSI report that has timed out.
  • the priority information of the sidelink CSI report includes: the priority of the sidelink CSI report that has timed out is the lowest; or the priority logical channel of the sidelink CSI report that has timed out.
  • the sidelink CSI report that has timed out has the lowest priority.
  • Medium Access Control Medium Access Control
  • the UE in mode 2 performs the initial selection of the resource pool, for the resource pool configured by the upper layer of each UE, if the current measured CBR value of the resource pool is less than all the UEs that have data to be sent
  • the CBR reselection threshold corresponding to the logical channel with the highest priority in the logical channel is to enable Hybrid Automatic Repeat reQuest (HARQ) feedback
  • the resource pool is configured with Physical Sidelink Feedback Channel (PSFCH) resources, then the UE can use this resource pool as an optional alternative resource pool.
  • PSFCH Physical Sidelink Feedback Channel
  • the UE In the case of mode2UE performing resource pool reselection, if the UE triggers resource reselection, and the trigger condition for resource reselection is not because the MAC protocol data unit (Protocol Data Unit, PDU) assembled by the UE needs to enable HARQ feedback but the current
  • the used resource pool is not configured with feedback resources, and the currently used resource pool CBR measurement value is less than the CBR residency threshold corresponding to the highest priority logical channel among all the logical channels on which the UE has data to be sent, the UE can continue Use the current resource pool.
  • PDU Network Data Unit
  • the CBR measurement value of the currently used resource pool is greater than the CBR residency threshold corresponding to the highest priority logical channel among all the logical channels on which the UE has data to be sent, for each UE’s higher-level configuration resource pool, the current The CBR measurement value of the resource pool is less than the CBR residency threshold corresponding to the highest priority logical channel among all the logical channels on which the UE has data to be sent, and the UE may use the resource pool as an optional resource pool.
  • the current resource pool CBR measurement The value is less than the CBR reselection threshold corresponding to the highest priority logical channel among all the logical channels on which the UE has data to be sent, then the UE can use this resource pool as an optional resource pool.
  • the UE can select the resource pool with the lowest CBR measurement value to use.
  • FIG. 5 is a structural block diagram of a starting device provided in an embodiment of the present application. This embodiment is applied to the first communication node. As shown in FIG. 5, the activation device in this embodiment includes: a receiver 410 and an initiator 420.
  • the receiver 410 is configured to receive the relay function configuration information sent by the second communication node; the starter 420 is configured to start the corresponding relay service transmission function according to the comparison result of the relay function configuration information and the first current parameter value,
  • the first current parameter value includes: current measurement value and current business priority.
  • the activation device provided in this embodiment is configured to implement the activation method of the embodiment shown in FIG.
  • the relay function configuration information includes at least one of the following information: user equipment UE to network relay function configuration information; UE to UE relay function configuration information.
  • the second communication node supporting the relay function is selected.
  • the first communication node judges whether the second communication node supports the relay function of the UE to the network by at least one of the following methods:
  • the configuration information related to the relay function of the UE to the network is received within the current coverage of the second communication node, and the configuration information is included in the system message block SIB message of the Internet of Vehicles V2X or an independent SIB message; in the second communication In the current coverage area of the node, the indication information that the current serving cell indicated in SIB1, SIB2 or SIB4 supports the relay function of the UE to the network is received; in the current coverage area of the second communication node, it receives the information dedicated to the UE to the network.
  • the physical random access of the relay function to the PRACH resource; the access category and the access identifier dedicated to the relay function of the UE to the network are received within the current coverage of the second communication node.
  • the location where the U2N relay function configuration information is included includes one of the following: V2X SIB message; UE to UE (U2U); independent SIB message.
  • the first communication node judges whether the second communication node supports the UE-to-UE relay function by at least one of the following methods:
  • the configuration information related to the relay function from the UE to the UE is received within the coverage of the current second communication node, and the configuration information is included in the SIB message of V2X or the SIB message of the UE to the network relay or an independent SIB message ; Receive the indication that the current serving cell indicated in SIB1, SIB2, or SIB4 supports the UE-to-UE relay function within the coverage of the current second communication node; receive the indication information dedicated to the UE in the coverage of the current second communication node Physical random access to the PRACH resource for the UE-to-UE relay function; the access category and access identifier dedicated to the UE-to-UE relay function are received within the coverage of the current second communication node.
  • the location where the U2U relay function configuration information is included includes one of the following: V2X SIB message; U2N; independent SIB message.
  • the activation device applied to the first communication node further includes a selector configured to select a frequency point corresponding to the relay function according to the contained position of the relay function configuration information.
  • the frequency point corresponding to the relay function is selected according to the storage location of the relay function configuration information, including one of the following :
  • the UE-to-network relay function configuration information is in a separate SIB message, the frequency point that supports the UE-to-network relay function is preferred; the UE-to-network relay function configuration information is in the V2X SIB message In the case of NR, it is preferred to support the relay function from the UE to the network, and to support the frequency point of NR V2X.
  • the frequency point corresponding to the relay function is selected according to the included position of the relay function configuration information, including the following: one:
  • the frequency that supports the UE-UE relay function is preferentially selected; the UE-to-UE relay function configuration information is in the V2X SIB message In the case of the UE-to-UE relay function, and support the frequency of NR V2X; when the UE-to-UE relay function configuration information is in the SIB message from the UE to the network relay, the priority is selected to support UE-to-UE relay function, and support the frequency of UE-to-network relay function; when the UE-to-UE relay function configuration information is in the UE-to-network relay SIB message and V2X SIB message, priority choose to support the UE-to-UE relay function, support the UE-to-network relay function, and support NR V2X frequency.
  • the configuration information of the relay function from the UE to the network includes at least one of the following:
  • RSRP threshold of the reference signal received power on the Uu interface RSRP threshold on the direct link interface (PC5 interface); business priority threshold on the Uu interface; business priority threshold on the PC5 interface; Resource pool busyness threshold; absolute speed threshold; Uu interface is the interface between the first communication node and the second communication node.
  • starting the corresponding relay function according to the comparison result of the relay function configuration information and the first current parameter value includes at least one of the following:
  • the relay function from the UE to the network is activated; the RSRP measurement value on the PC5 interface If it is less than or equal to the maximum threshold value and greater than or equal to the minimum threshold value, start the relay function from the UE to the network; when the priority value of all services on the Uu interface is greater than or less than the priority threshold value of the service , Start the relay function from the UE to the network; when the priority value of all non-relay services on the PC5 interface is greater than or less than the service priority threshold, start the relay function from the UE to the network; in the resource pool busyness When the measured value is lower or higher than the resource pool busyness threshold, start the relay function of the UE to the network; when the driving speed of the first communication node is lower than or greater than the absolute speed threshold, start the UE Relay
  • the UE-to-UE relay function configuration information includes at least one of the following:
  • RSRP threshold on the Uu interface RSRP threshold on the PC5 interface
  • business priority threshold on the Uu interface business priority threshold on the PC5 interface
  • resource pool busy and idle threshold absolute Speed threshold.
  • starting the corresponding relay function according to the comparison result of the relay function configuration information and the first current parameter value includes at least one of the following:
  • the UE to UE relay function When the RSRP measurement value on the Uu interface is less than or equal to the maximum threshold minus the hysteresis value, and/or is greater than or equal to the minimum threshold plus the hysteresis value, the UE to UE relay function is activated; the RSRP measurement value on the PC5 interface If it is less than or equal to the maximum threshold value and greater than or equal to the minimum threshold value, the UE-to-UE relay function is activated; when the priority value of all services on the Uu interface is greater than the service priority threshold value, it is activated UE to UE relay function; when the priority value of all non-relay services on the PC5 interface is greater than the service priority threshold, the UE to UE relay function is activated; the measured value of the resource pool busyness is lower than the service priority threshold. In the case of the resource pool busyness threshold, the UE to UE relay function is activated; in the case where the driving speed of the first communication node is less than the absolute speed threshold, the
  • the first communication node satisfies the relay UE selection criterion information pre-configured or configured by the second communication node.
  • the activation device applied to the first communication node further includes a broadcaster configured to broadcast relay UE selection criterion information to the third communication node through a discovery message or a direct communication request message.
  • the relay UE selection criterion information includes one of the following: the RSRP measurement value on the PC5 interface is greater than the RSRP threshold; Uu The current service priority on the interface is the highest service priority; the current service priority on the PC5 interface is the highest priority; the domain address indication information in the SCI information; the resource scheduling mode is the pre-configuration mode; Uu radio access technology (RAT ) Indication information; current serving cell identity (NCGI) information; relay priority indication information.
  • RAT radio access technology
  • NCGI current serving cell identity
  • the relay UE selection criterion information includes one of the following: the RSRP measurement value on the PC5 interface is greater than the RSRP threshold; The RSRP measurement value between the first communication node and the third communication node is the largest; the current service priority on the Uu interface is the highest priority; the current service priority on the PC5 interface is the highest priority; the domain address indication information in the SCI information ; The resource scheduling mode is a pre-configured mode; Uu RAT indication information; NCGI information; relay priority indication information.
  • FIG. 6 is a structural block diagram of another starting device provided in an embodiment of the present application. This embodiment is applied to the second communication node. As shown in FIG. 6, the starting device in this embodiment includes: a first configuration module 510 and a transmitter 520.
  • the first configuration module 510 is configured to configure the relay function configuration information for the first communication node; the transmitter 520 is configured to send the relay function configuration information to the first communication node; the relay function configuration information is used to trigger the first communication The node starts the relay service transmission function.
  • the activation device provided in this embodiment is configured to implement the activation method of the embodiment shown in FIG.
  • the activation device applied to the second communication node further includes: a second configuration module configured to configure relay UE selection criterion information for the third communication node.
  • the relay function configuration information includes at least one of the following information: user equipment UE to network relay function configuration information; UE to UE relay function configuration information.
  • At least one of the following methods is used to determine whether the second communication node supports the relay function of the UE to the network:
  • the configuration information related to the relay function of the UE to the network is received within the current coverage area of the second communication node, and the configuration information is included in the V2X SIB message or an independent SIB message; in the current coverage area of the second communication node Receive the indication information indicating that the current serving cell in SIB1, SIB2, or SIB4 supports the relay function of the UE to the network; receive the PRACH resource dedicated to the relay function of the UE to the network within the current coverage of the second communication node ; Receive the access category and access identifier dedicated to the relay function of the UE to the network within the current coverage of the second communication node.
  • the location where the U2N relay function configuration information is included includes one of the following: V2X SIB message; UE to UE (U2U); independent SIB message.
  • At least one of the following methods is used to determine whether the second communication node supports the UE-to-UE relay function:
  • the configuration information related to the relay function from the UE to the UE is received within the coverage of the current second communication node, and the configuration information is included in the SIB message of V2X or the SIB message of the UE to the network relay or an independent SIB message ; Receive the indication that the current serving cell indicated in SIB1, SIB2, or SIB4 supports the UE-to-UE relay function within the coverage of the current second communication node; receive the indication information dedicated to the UE in the coverage of the current second communication node.
  • the PRACH resource of the relay function from the UE to the UE; the access category and the access identifier dedicated to the relay function from the UE to the UE are received within the coverage of the current second communication node.
  • the location where the U2U relay function configuration information is included includes one of the following: V2X SIB message; U2N; independent SIB message.
  • the configuration information of the relay function from the UE to the network includes at least one of the following:
  • RSRP threshold of the reference signal received power on the Uu interface RSRP threshold on the direct link interface (PC5 interface); business priority threshold on the Uu interface; business priority threshold on the PC5 interface; Resource pool busyness threshold; absolute speed threshold; Uu interface is the interface between the first communication node and the second communication node.
  • the UE-to-UE relay function configuration information includes at least one of the following:
  • RSRP threshold on the Uu interface RSRP threshold on the PC5 interface
  • business priority threshold on the Uu interface business priority threshold on the PC5 interface
  • resource pool busy and idle threshold absolute Speed threshold.
  • the activation device applied to the second communication node further includes: a third configuration module configured to configure the relay UE selection criterion information for the first communication node.
  • the relay UE selection criterion information includes one of the following: the RSRP measurement value on the PC5 interface is greater than the RSRP threshold; Uu The current service priority on the interface is the highest service priority; the current service priority on the PC5 interface is the highest priority; the domain address indication information in the SCI information; the resource scheduling mode is the pre-configured mode; Uu RAT indication information; NCGI information ; Relay priority indication information.
  • the relay UE selection criterion information includes one of the following: the RSRP measurement value on the PC5 interface is greater than the RSRP threshold; The RSRP measurement value between the first communication node and the third communication node is the largest; the current service priority on the Uu interface is the highest priority; the current service priority on the PC5 interface is the highest priority; the domain address indication information in the SCI information ; The resource scheduling mode is a pre-configured mode; Uu RAT indication information; NCGI information; relay priority indication information.
  • FIG. 7 is a structural block diagram of a reselection device provided by an embodiment of the present application. This embodiment is applied to the third communication node. As shown in FIG. 7, the reselection device in this embodiment includes: a first detector 610 and a first reselector 620.
  • the first detector 610 is configured to detect the second current parameter value of the current first communication node currently in communication; the first reselector 620 is configured to reselect the current first communication node according to the second current parameter value .
  • the reselection device provided in this embodiment is configured to implement the reselection method of the embodiment shown in FIG.
  • the second current parameter value when the first communication node is connected to the network, includes at least one of the following: the RSRP measurement value on the Uu interface is less than the RSRP threshold value on the Uu interface; the current power Less than the preset power threshold; the RSRP measurement value on the PC5 interface between the first communication node and the third communication node is less than the RSRP threshold on the PC5 interface; the priority of the service on the Uu interface is greater than the service on the Uu interface Priority threshold; the business priority on the PC5 interface is greater than the business priority threshold on the PC5 interface.
  • the second current parameter value when the first communication node accesses the UE, includes at least one of the following: the RSRP measurement value on the Uu interface is less than the RSRP threshold value on the Uu interface; the current power Less than the preset power threshold; the RSRP measurement value on the PC5 interface between the first communication node and the third communication node is less than the RSRP threshold on the PC5 interface; the priority of the service on the Uu interface is greater than the service on the Uu interface Priority threshold; the service priority on the PC5 interface is greater than the service priority threshold on the PC5 interface; the RSRP measurement value between the first communication node and the opposite third communication node is less than the RSRP threshold on the PC5 interface Value; Uu RAT indication information; NCGI information; relay priority indication information.
  • the reselection device applied to the third communication node further includes: a second detector configured to detect discovery messages sent by other first communication nodes except the first communication node currently in communication, The connection establishment request message or the connection establishment response message; the second reselector is configured to reselect the first communication node according to the first preset message carried in the discovery message, the connection establishment request message or the connection establishment response message.
  • the first preset message when the first communication node accesses the network, includes at least one of the following: the service priority on the Uu interface is lower than the service priority of the first communication node in the current communication ; The service priority on the PC5 interface is less than the service priority of the first communication node in the current communication; the RSRP measurement value is greater than the RSRP measurement value between the first communication node in the current communication; the zone ID information in the SCI message indicates the closest distance Node; resource scheduling mode is priority mode; Uu RAT indication information; NCGI information; relay priority indication information.
  • the first preset message when the first communication node accesses the UE, includes at least one of the following: the service priority on the Uu interface is lower than the service priority of the first communication node in the current communication ; The service priority on the PC5 interface is less than the service priority of the first communication node in the current communication; the RSRP measurement value is greater than the RSRP measurement value between the first communication nodes in the current communication; the zone ID information in the SCI message indicates the closest distance
  • the resource scheduling mode is priority mode; Uu RAT indication information; NCGI information; relay priority indication information.
  • Fig. 8 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • the device provided by the present application includes: a processor 710, a memory 720, and a communication module 730.
  • the number of processors 710 in the device may be one or more. In FIG. 8, one processor 710 is taken as an example.
  • the number of memories 720 in the device may be one or more. In FIG. 8, one memory 720 is taken as an example.
  • the processor 710, the memory 720, and the communication module 730 of the device may be connected through a bus or in other ways. In FIG. 8, the connection through a bus is taken as an example.
  • the device is a passive optical network device.
  • the memory 720 can be configured to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the device of any embodiment of the present application (for example, start-up receivers and start-ups in the center). ⁇ ).
  • the memory 720 may include a program storage area and a data storage area.
  • the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the device, and the like.
  • the memory 720 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.
  • the memory 720 may include a memory remotely provided with respect to the processor 710, and these remote memories may be connected to the device through a network.
  • Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.
  • the communication module is configured to perform communication interaction among the first communication node, the second communication node and the third communication node.
  • the above-provided device can be configured to execute the startup method applied to the first communication node provided by any of the above-mentioned embodiments, and has corresponding functions and effects.
  • the device is the second communication node
  • the device provided above can be configured to execute the startup method applied to the second communication node provided by any of the foregoing embodiments, and has corresponding functions and effects.
  • the device is a third communication node
  • the device provided above can be configured to execute the reselection method applied to the third communication node provided by any of the above embodiments, and has corresponding functions and effects.
  • An embodiment of the present application also provides a storage medium containing computer-executable instructions.
  • the computer-executable instructions are executed by a computer processor, they are used to execute a startup method applied to a first communication node.
  • the method includes: receiving a second communication node.
  • the first current parameter value includes: current measurement value and current service priority.
  • An embodiment of the present application also provides a storage medium containing computer-executable instructions.
  • the computer-executable instructions When executed by a computer processor, they are used to execute a startup method applied to a second communication node.
  • the method includes: The communication node configures the relay function configuration information; sends the relay function configuration information to the first communication node; the relay function configuration information is used to trigger the first communication node to start the relay service transmission function.
  • An embodiment of the present application also provides a storage medium containing computer-executable instructions.
  • the computer-executable instructions are executed by a computer processor, they are used to execute a reselection method applied to a third communication node.
  • the method includes: detecting current The second current parameter value of the current first communication node in communication; the current first communication node is reselected according to the second current parameter value.
  • user equipment encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicular mobile stations.
  • the various embodiments of the present application can be implemented in hardware or dedicated circuits, software, logic or any combination thereof.
  • some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor, or other computing device, although the present application is not limited thereto.
  • Computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or written in any combination of one or more programming languages Source code or object code.
  • ISA Instruction Set Architecture
  • the block diagram of any logic flow in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions.
  • the computer program can be stored on the memory.
  • the memory can be of any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as but not limited to read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), optical Memory devices and systems (Digital Video Disc (DVD) or Compact Disk (CD)), etc.
  • Computer-readable media may include non-transitory storage media.
  • the data processor can be any type suitable for the local technical environment, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (ASICs) ), programmable logic devices (Field-Programmable Gate Array, FPGA), and processors based on multi-core processor architecture.
  • DSP Digital Signal Processing
  • ASICs application specific integrated circuits
  • FPGA Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array

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Abstract

本文公开一种启动方法及装置、重选方法及装置、设备、存储介质。该启动方法应用于第一通信节点，第一通信节点处于连接态或空闲态或非活跃态，包括：接收第二通信节点发送的中继功能配置信息；根据中继功能配置信息和第一当前参数值的比较结果，启动所述比较结果对应的中继功能，第一当前参数值包括：测量值、业务优先级。

Description

启动方法及装置、重选方法及装置、设备、存储介质 技术领域
本申请涉及通信领域，例如涉及一种启动方法及装置、重选方法及装置、设备、存储介质。
背景技术
在无线通信领域，随着智能终端和移动互联网应用的快速发展，人们对用户体验和高速率、大数据量的要求越来越高，代表未来通信技术发展新方向的直通链路(Sidelink)技术应运而生。Sidelink技术可以工作在授权频段或非授权频段，允许多个支持Sidelink功能的用户设备在有网络覆盖或无网络覆盖的情况下进行直接发现/直接通信。
在Sidelink通信过程中，随着用户设备(User Equipment，UE)的移动，可能出现正在进行Sidelink通信的UE之间相对距离发生变化，不再适合进行Sidelink通信，或是UE重新回到有网络覆盖状态，不需要通过Sidelink中继转发数据。此外，正在通过蜂窝通信的两个UE发现彼此邻近，为了降低蜂窝网络负荷，减少传输延迟，希望数据通信从蜂窝切换到Sidelink。在这些情况下，需要考虑将Sidelink UE之间的业务流在Sidelink路径和蜂窝路径之间切换。在业务流切换的过程中，要保证服务连续性，不能让用户感到通信服务质量下降。因此，如何对中继UE进行选择启动以及重选，是亟待解决的问题。
发明内容
本申请实施例提供一种启动方法及装置、重选方法及装置、设备、存储介质，实现了对中继UE的选择启动和重选。
本申请实施例提供一种启动方法，应用于第一通信节点，所述第一通信节点处于连接态或空闲态或非活跃态，包括：
接收第二通信节点发送的中继功能配置信息；根据所述中继功能配置信息和第一当前参数值的比较结果，启动对应的中继功能，所述第一当前参数值包括：当前测量值、当前业务优先级。
本申请实施例还提供一种启动方法，应用于第二通信节点，包括：
为第一通信节点配置中继功能配置信息；将所述中继功能配置信息发送至第一通信节点；所述中继功能配置信息用于触发第一通信节点启动中继业务传 输功能。
本申请实施例还提供一种重选方法，应用于第三通信节点，包括：
检测当前处于通信中的当前第一通信节点的第二当前参数值；根据所述第二当前参数值对当前第一通信节点进行重选。
本申请实施例还提供一种启动装置，应用于第一通信节点，包括：
接收器，配置为接收第二通信节点发送的中继功能配置信息；启动器，配置为根据所述中继功能配置信息和第一当前参数值的比较结果，启动对应的中继业务传输功能，所述第一当前参数值包括：当前测量值、当前业务优先级。
本申请实施例还提供一种启动装置，应用于第二通信节点，包括：
第一配置模块，配置为为第一通信节点配置中继功能配置信息；发送器，配置为将所述中继功能配置信息发送至第一通信节点；所述中继功能配置信息用于触发第一通信节点启动中继业务传输功能。
本申请实施例还提供一种重选装置，应用于第三通信节点，包括：
第一检测器，配置为检测当前处于通信中的当前第一通信节点的第二当前参数值；第一重选器，配置为根据所述第二当前参数值对当前第一通信节点进行重选。
本申请实施例还提供一种设备，包括：通信模块，存储器，以及一个或多个处理器；所述通信模块，配置为在第一通信节点、第二通信节点和第三通信节点之间进行通信交互；所述存储器，配置为存储一个或多个程序；当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现上述任一实施例所述的方法。
本申请实施例还提供了一种存储介质，所述存储介质存储有计算机程序，所述计算机程序被处理器执行时实现上述任一实施例所述的方法。
附图说明
图1是本申请实施例提供的一种SideLink通信的示意图；
图2是本申请实施例提供的一种启动方法的流程图；
图3是本申请实施例提供的另一种启动方法的流程图；
图4是本申请实施例提供的一种重选方法的流程图；
图5是本申请实施例提供的一种启动装置的结构框图；
图6是本申请实施例提供的另一种启动装置的结构框图；
图7是本申请实施例提供的一种重选装置的结构框图；
图8是本申请实施例提供的一种设备的结构示意图。
具体实施方式
下文中将结合附图对本申请的实施例进行说明。
Sidelink技术包括Sidelink发现技术和Sidelink通信技术。Sidelink发现技术是指用于判断/确定两个或多个Sidelink用户设备之间相互邻近(例如，在可进行Sidelink直接通信范围之内)或用于判断/确定第一用户设备邻近第二用户设备的技术。Sidelink用户设备间可通过发送或接收发现信号/信息来发现对方，在有蜂窝网络覆盖下，网络可辅助Sidelink用户设备进行Sidelink发现。Sidelink通信技术是指Sidelink用户设备之间部分或全部通信数据可以不通过网络基础设施而直接进行通信的技术。
Sidelink技术可以工作在授权频段或非授权频段，允许多个支持Sidelink功能的用户设备在有网络覆盖或无网络覆盖的情况下进行直接发现/直接通信。图1是本申请实施例提供的一种SideLink通信的示意图。Sidelink的应用用例主要有三种：
其一，UE1和UE2在蜂窝网络的覆盖下进行Sidelink发现或通信，用户面数据不经过网络基础设施。如图1中的用例1，用例1可以包括如下两个分支：
a)Sidelink发现：可分为开放的Sidelink发现以及受限的Sidelink发现。
b)Sidelink通信：可分为Sidelink广播通信，Sidelink组播通信，Sidelink单播通信。
其二，在弱/无覆盖区域的UE中继传输(UE-to-Network Relay)，如图1中的用例2，允许信号质量较差的UE4通过附近有网络覆盖的UE3与网络进行通信，能帮助运营商扩展覆盖、提高容量。
其三，在发生地震或紧急情况，蜂窝网络不能正常工作的情况下，允许设备间多跳通信(UE-to-UE Relay)，如图1中的用例3，UE5，UE6和UE7间控制面和用户面都不经过网络基础设施而进行一跳或多跳的数据通信。
服务连续性：对于用例1，用例2和用例3进行的Sidelink通信，随着UE的移动，有可能出现正在进行Sidelink通信的UE之间相对距离发生变化，不再适合进行Sidelink通信，或是UE重新回到有网络覆盖状态，不需要通过Sidelink中继转发数据。此外，正在通过蜂窝通信的两个UE发现彼此邻近，为了降低蜂窝网络负荷，减少传输延迟，希望数据通信从蜂窝切换到Sidelink。在这些情况下，需要考虑将Sidelink UE之间的业务流在Sidelink路径和蜂窝路径之间切换。 在业务流切换的过程中，要保证服务连续性，不能让用户感到通信服务质量下降。有鉴于此，本申请实施例提供一种中继UE的启动方法和重选方法，保证了服务连续性，以及提高了用户的使用体验。
在一实施例中，图2是本申请实施例提供的一种启动方法的流程图。本实施例应用于第一通信节点。示例性地，第一通信节点可以为中继UE(relay UE)。如图2所示，本实施例包括：S110-S120。
S110、接收第二通信节点发送的中继功能配置信息。
S120、根据中继功能配置信息和第一当前参数值的比较结果，启动对应的中继功能，第一当前参数值包括：当前测量值、当前业务优先级。
在实施例中，第一通信节点在接收到第二通信节点发送的中继功能配置信息之后，可根据中继功能配置信息和第一当前参数值的比较结果，确定是否启动第一通信节点的中继功能，从而保证了服务的连续性。在实施例中，第二通信节点为网络侧，比如，可以为基站，也可以为新空口-无线接入网(New Radio-Radio Access Network，NR-RAN)，对此并不进行限定。在实施例中，中继功能配置信息指的是第一通信节点所能支持中继功能的相关配置信息。在实施例中，第一当前参数值可以包括：当前测量值和当前业务优先级。当前测量值可以包括：Uu接口上的参考信号接收功率(Reference Signal Receiving Power，RSRP)测量值，资源池忙闲程度测量值，行驶速度的测量值；当前业务优先级可以包括：Uu接口上的业务优先级值，直通链路接口(PC5接口)上的业务优先级值。其中，Uu接口指的是第一通信节点与第二通信节点之间的接口。
在一实施例中，中继功能配置信息包括下述信息中的至少之一：用户设备UE到网络的中继功能配置信息；UE到UE的中继功能配置信息。在实施例中，UE到网络的中继功能配置信息指的是第一通信节点支持UE到网络的中继功能对应的配置信息；UE到UE的中继功能配置信息指的是第一通信节点支持UE到UE的中继功能对应的配置信息。
在一实施例中，在第一通信节点处于空闲态或非活跃态进行小区选择的情况下，选择支持中继功能的第二通信节点。
在一实施例中，第一通信节点通过以下方式中的至少之一判断第二通信节点是否支持UE到网络的中继功能：
在第二通信节点的当前覆盖范围内接收到UE到网络的中继功能相关的配置信息，配置信息被包含在车联网(Vehicle to Everything，V2X)的系统消息块(System Information Block，SIB)消息中或独立的SIB消息中；在第二通信节点的当前覆盖范围内接收到SIB1、SIB2或SIB4中指示的当前服务小区支持UE 到网络的中继功能的指示信息；在第二通信节点的当前覆盖范围内接收到专用于UE到网络的中继功能的物理随机接入信道(Physical Random Access Channel，PRACH)资源；在第二通信节点的当前覆盖范围内接收到专用于UE到网络的中继功能的访问类别和访问标识。
在一实施例中，UE到网络(UE to Network，U2N)的中继功能配置信息被包含的位置，包括下述之一：V2X的SIB消息；UE到UE(U2U)；独立的SIB消息。在实施例中，V2X的SIB消息包括U2N和U2U的中继功能配置信息；或者，U2N的中继功能配置信息和U2U的中继功能配置信息是两个独立配置的信息；或者，U2N的中继功能配置信息和U2U的中继功能配置信息合并在一个SIB消息中；或者V2X的SIB消息包括U2N的中继功能配置信息和U2U的中继功能配置信息独立配置。
在一实施例中，第一通信节点通过以下方式中的至少之一判断第二通信节点是否支持UE到UE的中继功能：
在当前第二通信节点的覆盖范围内接收到UE到UE的中继功能相关的配置信息，配置信息被包含在V2X的SIB消息中或UE到网络中继的SIB消息中或独立的SIB消息中；在当前第二通信节点的覆盖范围内接收到SIB1、SIB2或SIB4中指示的当前服务小区支持UE到UE的中继功能的指示信息；在当前第二通信节点的覆盖范围内接收到专用于UE到UE的中继功能的PRACH资源；在当前第二通信节点的覆盖范围内接收到专用于UE到UE的中继功能的访问类别和访问标识。
在一实施例中，U2U的中继功能配置信息被包含的位置，包括下述之一：V2X的SIB消息；U2N；独立的SIB消息。在实施例中，V2X的SIB消息包括U2N和U2U的中继功能配置信息；或者，U2N的中继功能配置信息和U2U的中继功能配置信息是两个独立配置的信息；或者，U2N的中继功能配置信息和U2U的中继功能配置信息合并在一个SIB消息中；或者，V2X的SIB消息包括U2N的中继功能配置信息和U2U的中继功能配置信息独立配置。
在一实施例中，应用于第一通信节点的启动方法，还包括：根据中继功能配置信息的被包含位置选择对应支持中继功能的频点。
在一实施例中，在中继功能配置信息为UE到网络的中继功能配置信息的情况下，根据中继功能配置信息的存储位置选择对应支持中继功能的频点，包括下述之一：
在UE到网络的中继功能配置信息在独立的SIB消息中的情况下，优先选择支持UE到网络的中继功能的频点；在UE到网络的中继功能配置信息在V2X 的SIB消息中的情况下，优先选择支持UE到网络的中继功能，且支持NR V2X的频点。
在一实施例中，在中继功能配置信息为UE到UE的中继功能配置信息的情况下，根据中继功能配置信息的被包含位置选择对应支持中继功能的频点，包括下述之一：
在UE到UE的中继功能配置信息在独立的SIB消息中的情况下，优先选择支持UE到网络的中继功能的频点；在UE到UE的中继功能配置信息在V2X的SIB消息中的情况下，优先选择支持UE到UE的中继功能，且支持NR V2X的频点；在UE到UE的中继功能配置信息在UE到网络中继的SIB消息中的情况下，优先选择支持UE到UE的中继功能，且支持UE到网络的中继功能的频点；在UE到UE的中继功能配置信息在UE到网络中继的SIB消息和V2X的SIB消息中的情况下，优先选择支持UE到UE的中继功能，支持UE到网络的中继功能，且支持NR V2X的频点。
在一实施例中，UE到网络的中继功能配置信息，至少包括下述之一：
Uu接口上的参考信号接收功率RSRP门限值；直通链路接口(PC5接口)上的RSRP门限值；Uu接口上的业务优先级门限值；PC5接口上的业务优先级门限值；资源池忙闲程度门限值；绝对速度门限值；Uu接口为第一通信节点和第二通信节点之间的接口。
在一实施例中，根据中继功能配置信息和第一当前参数值的比较结果，启动对应的中继功能，至少包括下述之一：
在Uu接口上的RSRP测量值小于或等于最大门限减迟滞值，和/或，大于或等于最小门限加迟滞值的情况下，启动UE到网络的中继功能；在PC5接口上的RSRP测量值小于或等于最大门限值，且大于或等于最小门限值的情况下，启动UE到网络的中继功能；在Uu接口上所有业务优先级数值大于或小于业务优先级门限值的情况下，启动UE到网络的中继功能；在PC5接口上所有非中继业务优先级数值大于或小于业务优先级门限值的情况下，启动UE到网络的中继功能；在资源池忙闲程度测量值低于或高于资源池忙闲程度门限值的情况下，启动UE到网络的中继功能；在第一通信节点的行驶速度小于或大于绝对速度门限值的情况下，启动UE到网络的中继功能。
在一实施例中，UE到UE的中继功能配置信息，至少包括下述之一：
Uu接口上的RSRP门限值；PC5接口上的RSRP门限值；Uu接口上的业务优先级门限值；PC5接口上的业务优先级门限值；资源池忙闲程度门限值；绝对速度门限值。
在一实施例中，根据中继功能配置信息和第一当前参数值的比较结果，启动对应的中继功能，至少包括下述之一：
在Uu接口上的RSRP测量值小于或等于最大门限减迟滞值，和/或，大于或等于最小门限加迟滞值的情况下，启动UE到UE的中继功能；在PC5接口上的RSRP测量值小于或等于最大门限值，且大于或等于最小门限值的情况下，启动UE到UE的中继功能；在Uu接口上所有业务优先级数值大于业务优先级门限值的情况下，启动UE到UE的中继功能；在PC5接口上所有非中继业务优先级数值大于业务优先级门限值的情况下，启动UE到UE的中继功能；在资源池忙闲程度测量值低于资源池忙闲程度门限值的情况下，启动UE到UE的中继功能；在第一通信节点的行驶速度小于绝对速度门限值的情况下，启动UE到UE的中继功能。
在一实施例中，第一通信节点满足预配置或第二通信节点配置的中继UE选择准则信息。
在一实施例中，应用于第一通信节点的启动方法，还包括：通过发现消息或者直接通信请求消息向第三通信节点广播中继UE选择准则信息。
在一实施例中，在第一通信节点支持UE到网络的中继功能的情况下，中继UE选择准则信息，包括下述之一：PC5接口上的RSRP测量值大于RSRP门限值；Uu接口上的当前业务优先级为最高业务优先级；PC5接口上的当前业务优先级为最高优先级；同步小区指示(SCI)信息中的域地址指示信息；资源调度模式为预先配置模式；Uu无线接入技术(Radio Access Technology，RAT)指示信息；新无线接入小区全局标识(NRCell Global Identifier，NCGI)信息；中继优先级指示信息。
在一实施例中，在第一通信节点支持UE到UE的中继功能的情况下，中继UE选择准则信息，包括下述之一：PC5接口上的RSRP测量值大于RSRP门限值；第一通信节点与第三通信节点之间的RSRP测量值最大；Uu接口上的当前业务优先级为最高优先级；PC5接口上的当前业务优先级为最高优先级；SCI信息中的域地址指示信息；资源调度模式为预先配置模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
在一实施例中，图3是本申请实施例提供的另一种启动方法的流程图。本实施例应用于第二通信节点。在实施例中，第二通信节点为网络侧，比如，可以为基站，也可以为NR-RAN。如图3所示，本实施例包括：S210-S220。
S210、为第一通信节点配置中继功能配置信息。
S220、将中继功能配置信息发送至第一通信节点；中继功能配置信息用于 触发第一通信节点启动中继业务传输功能。
在实施例中，第二通信节点为第一通信节点配置中继功能配置信息，并将中继功能配置信息发送至第一通信节点，以使第一通信节点根据中继功能配置信息确定是否启动自身的中继功能。
在一实施例中，应用于第二通信节点的启动方法，还包括：为第三通信节点配置中继UE选择准则信息。
在一实施例中，中继功能配置信息包括下述信息中的至少之一：用户设备UE到网络的中继功能配置信息；UE到UE的中继功能配置信息。
在一实施例中，通过以下方式中的至少之一判断第二通信节点是否支持UE到网络的中继功能：
在第二通信节点的当前覆盖范围内接收到UE到网络的中继功能相关的配置信息，配置信息被包含在V2X的SIB消息中或独立的SIB消息中；在第二通信节点的当前覆盖范围内接收到SIB1、SIB2或SIB4中指示的当前服务小区支持UE到网络的中继功能的指示信息；在第二通信节点的当前覆盖范围内接收到专用于UE到网络的中继功能的PRACH资源；在第二通信节点的当前覆盖范围内接收到专用于UE到网络的中继功能的访问类别和访问标识。
在一实施例中，U2N的中继功能配置信息被包含的位置，包括下述之一：V2X的SIB消息；UE到UE(U2U)；独立的SIB消息。
在一实施例中，通过以下方式中的至少之一判断第二通信节点是否支持UE到UE的中继功能：
在当前第二通信节点的覆盖范围内接收到UE到UE的中继功能相关的配置信息，配置信息被包含在V2X的SIB消息中或UE到网络中继的SIB消息中或独立的SIB消息中；在当前第二通信节点的覆盖范围内接收到SIB1、SIB2或SIB4中指示的当前服务小区支持UE到UE的中继功能的指示信息；在当前第二通信节点的覆盖范围内接收到专用于UE到UE的中继功能的PRACH资源；在当前第二通信节点的覆盖范围内接收到专用于UE到UE的中继功能的访问类别和访问标识。
在一实施例中，U2U的中继功能配置信息被包含的位置，包括下述之一：V2X的SIB消息；U2N；独立的SIB消息。
在一实施例中，UE到网络的中继功能配置信息，至少包括下述之一：
Uu接口上的参考信号接收功率RSRP门限值；直通链路接口(PC5接口)上的RSRP门限值；Uu接口上的业务优先级门限值；PC5接口上的业务优先级 门限值；资源池忙闲程度门限值；绝对速度门限值；Uu接口为第一通信节点和第二通信节点之间的接口。
在一实施例中，UE到UE的中继功能配置信息，至少包括下述之一：
Uu接口上的RSRP门限值；PC5接口上的RSRP门限值；Uu接口上的业务优先级门限值；PC5接口上的业务优先级门限值；资源池忙闲程度门限值；绝对速度门限值。
在一实施例中，应用于第二通信节点的启动方法，还包括：为第一通信节点配置中继UE选择准则信息。
在一实施例中，在第一通信节点支持UE到网络的中继功能的情况下，中继UE选择准则信息，包括下述之一：PC5接口上的RSRP测量值大于RSRP门限值；Uu接口上的当前业务优先级为最高业务优先级；PC5接口上的当前业务优先级为最高优先级；SCI信息中的域地址指示信息；资源调度模式为预先配置模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
在一实施例中，在第一通信节点支持UE到UE的中继功能的情况下，中继UE选择准则信息，包括下述之一：PC5接口上的RSRP测量值大于RSRP门限值；第一通信节点与第三通信节点之间的RSRP测量值最大；Uu接口上的当前业务优先级为最高优先级；PC5接口上的当前业务优先级为最高优先级；SCI信息中的域地址指示信息；资源调度模式为预先配置模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
在实施例中，对中继功能配置信息、中继UE选择准则信息的解释见上述实施例应用于第一通信节点的启动方法中的描述，在此不再赘述。
在一实施例中，在第三通信节点选择到中继UE1进行中继业务传输的过程中，由于某些原因导致中继UE1不再适合执行中继业务传输，此时，第三通信节点可对中继UE进行重选。有鉴于此，本实施例中提出一种重选方法。图4是本申请实施例提供的一种重选方法的流程图。本实施例应用于第三通信节点。示例性地，第三通信节点可以为远程UE。如图4所示，本实施例中的重选方法包括：S310-S320。
S310、检测当前处于通信中的当前第一通信节点的第二当前参数值。
S320、根据第二当前参数值对当前第一通信节点进行重选。
在实施例中，第三通信节点检测当前处于通信节点的当前第一通信节点的第二参数值，并根据第二当前参数值确定是否对当前第一通信节点进行重选，从而保证了中继业务的正常传输。
在一实施例中，在第一通信节点接入网络的情况下，第二当前参数值，至少包括下述之一：Uu接口上的RSRP测量值小于Uu接口上的RSRP门限值；当前电量小于预设电量门限值；第一通信节点和第三通信节点之间的PC5接口上的RSRP测量值小于PC5接口上的RSRP门限值；Uu接口上的业务优先级大于Uu接口上的业务优先级门限值；PC5接口上的业务优先级大于PC5接口上的业务优先级门限值。
在一实施例中，在第一通信节点接入UE的情况下，第二当前参数值，至少包括下述之一：Uu接口上的RSRP测量值小于Uu接口上的RSRP门限值；当前电量小于预设电量门限值；第一通信节点和第三通信节点之间的PC5接口上的RSRP测量值小于PC5接口上的RSRP门限值；Uu接口上的业务优先级大于Uu接口上的业务优先级门限值；PC5接口上的业务优先级大于PC5接口上的业务优先级门限值；第一通信节点和对端第三通信节点之间的RSRP测量值小于PC5接口上的RSRP门限值；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
在一实施例中，应用于第三通信节点的重选方法，还包括：检测除当前通信中的第一通信节点之外的其它第一通信节点发送的发现消息、连接建立请求消息或连接建立响应消息；根据发现消息、连接建立请求消息或连接建立响应消息中携带的第一预设消息对第一通信节点进行重选。
在一实施例中，在第一通信节点接入网络的情况下，第一预设消息，至少包括下述之一：Uu接口上的业务优先级小于当前通信中第一通信节点的业务优先级；PC5接口上的业务优先级小于当前通信中第一通信节点的业务优先级；RSRP测量值大于当前通信中第一通信节点之间的RSRP测量值；SCI消息中zone标识(Identifier，ID)信息指示为距离最近的节点；资源调度模式为优先模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
在一实施例中，在第一通信节点接入UE的情况下，第一预设消息，至少包括下述之一：Uu接口上的业务优先级小于当前通信中第一通信节点的业务优先级；PC5接口上的业务优先级小于当前通信中第一通信节点的业务优先级；RSRP测量值大于当前通信中第一通信节点之间的RSRP测量值；SCI消息中的zone ID信息指示为距离最近的节点；资源调度模式为优先模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
在一实现方式中，以第一通信节点接入网络为例，即以中继UE接入网络为例，对判断第二通信节点是否支持中继功能进行说明。
为了使一个NR SideLink UE成为UE到网络的中继UE(UE-to-Network relay UE)，网络侧支持NR的UE到网络的中继功能(UE-to-Network relay)，即网 络侧满足以下条件中的至少之一：
在第二通信节点的当前覆盖范围内接收到UE到网络的中继功能相关的配置信息，配置信息被包含在车联网V2X的系统消息块SIB消息中或独立的SIB消息中；在第二通信节点的当前覆盖范围内接收到SIB1、SIB2或SIB4中指示的当前服务小区支持UE到网络的中继功能的指示信息；在第二通信节点的当前覆盖范围内接收到专用于UE到网络的中继功能的物理随机接入PRACH资源；在第二通信节点的当前覆盖范围内接收到专用于UE到网络的中继功能的访问类别和访问标识。
在实施例中，在网络侧可以在小区内广播UE-to-Network relay相关的配置信息的情况下，本小区是支持UE-to-Network relay功能的小区。在实施例中，相关的UE-to-Network relay的配置信息可以放在V2X的SIB消息中，或者，相关的UE-to-Netowrk relay的配置信息可以被单独放在一个SIB消息里。
如果网络侧是支持UE-to-Network relay功能的，则可以在SIB1、SIB2或SIB4中携带指示信息(指示信息用于指示当前服务小区支持UE-to-Network relay功能)，UE在SIB1、SIB2或SIB4中读取到该指示信息，则接入小区进入连接态，并通过专有信令获取UE-to-Network relay相关的配置信息。
网络侧可以为中继UE配置专用于UE-to-Network relay的PRACH资源。
在实施例中，网络侧可以为中继UE配置专用于UE-to-Network relay的访问类别和访问标识。
为了使一个NR SideLink UE成为UE到UE的中继UE(UE to UE relay UE)，网络侧(比如，基站)支持NR的UE到UE的中继功能(UE-to-UE relay)，即网络侧满足以下条件至少之一：
在当前第二通信节点的覆盖范围内接收到UE到UE的中继功能相关的配置信息，配置信息被包含在V2X的SIB消息中或UE到网络中继的SIB消息中或独立的SIB消息中；在当前第二通信节点的覆盖范围内接收到SIB1、SIB2或SIB4中指示的当前服务小区支持UE到UE的中继功能的指示信息；在当前第二通信节点的覆盖范围内接收到专用于UE到UE的中继功能的物理随机接入PRACH资源；在当前第二通信节点的覆盖范围内接收到专用于UE到UE的中继功能的访问类别和访问标识。
在实施例中，在网络侧可以在小区内广播UE-to-UE relay相关的配置信息的情况下，本小区是支持UE-to-UE relay功能的小区。在实施例中，相关的UE-to-UE relay的配置信息可以放在V2X的SIB消息中，或者相关的UE-to-UE relay的配置信息可以放在UE-to-Network relay的SIB消息中，或者相关的UE-to-UE relay 的配置信息可以放在一个独立的SIB消息中。
如果网络侧是支持UE-to-UE relay功能的，则可以在SIB1、SIB2或SIB4中携带指示信息(指示信息用于指示当前服务小区支持UE-to-UE relay功能)，UE在SIB1、SIB2或SIB4中读取到该指示信息，则接入小区进入连接态，并通过专有信令获取UE-to-UE relay相关的配置信息。
网络侧可以为中继UE配置专用于UE-toUE relay的PRACH资源。
网络侧可以为中继UE配置专用于UE-toUE relay的访问类别和访问标识。
在一实现方式中，在中继UE进行小区选择的情况下，根据中继功能配置信息的被包含位置选择对应支持中继功能的频点。
在实施例中，中继功能配置信息为UE到网络的中继功能配置信息的情况下，中继UE在进行小区选择时，优先选择能够授权的支持UE-to-Network relay的频点，包括下述之一：
在UE到网络的中继功能配置信息在独立的SIB消息中的情况下，优先选择支持UE到网络的中继功能的频点。在实施例中，如果UE-to-Network relay的配置信息在独立的SIB消息中，以及UE有能力执行UE-to-Network relay的业务的情况下，UE优先选择支持UE-to-Network relay的频点。
在UE到网络的中继功能配置信息在V2X的SIB消息中的情况下，优先选择支持UE到网络的中继功能，且支持NR V2X的频点。在实施例中，如果UE-to-Network relay的配置信息在V2X相关的SIB消息中，以及UE有能力执行UE-to-Network relay的业务的情况下，UE优先选择既支持UE-to-Network relay又支持NR V2X的频点。
在实施例中，中继功能配置信息为UE到UE的中继功能配置信息的情况下，UE在进行小区选择时，优先选择能够授权的支持UE-to-UE relay的频点，包括下述之一：
在UE到UE的中继功能配置信息在独立的SIB消息中的情况下，优先选择支持UE到UE的中继功能的频点。在实施例中，如果UE-to-UE relay的配置信息在独立的SIB消息中，以及UE有能力执行UE-to-UE relay的业务的情况下，UE优先选择支持UE-to-UE relay的频点。
在UE到UE的中继功能配置信息在V2X的SIB消息中的情况下，优先选择支持UE到UE的中继功能，且支持NR V2X的频点。在实施例中，如果UE-to-UE relay的配置信息在V2X相关的SIB消息中，以及UE有能力执行UE-to-UE relay的业务的情况下，UE优先选择既支持UE-to-UE relay又支持NR V2X的频点。
在UE到UE的中继功能配置信息在UE到网络中继的SIB消息中的情况下，优先选择支持UE到UE的中继功能，且支持UE到网络的中继功能的频点。在实施例中，如果UE-to-UE relay的配置信息在UE-to-Network relay相关的SIB消息中，以及UE有能力执行UE-to-UE relay的业务，UE优先选择既支持UE-to-UE relay又支持UE-to-Network relay的频点。
在UE到UE的中继功能配置信息在UE到网络中继的SIB消息和V2X的SIB消息中的情况下，优先选择支持UE到UE的中继功能，支持UE到网络的中继功能，且支持NR V2X的频点。在实施例中，如果UE-to-UE relay的配置信息在UE-to-Network relay和V2X相关的SIB消息中，以及UE有能力执行UE-to-UE relay的业务的情况下，UE优先选择既支持UE-to-UE relay又支持UE-to-Netowrk relay和V2X相关的频点。
在一实现方式中，为了触发中继UE启动，基站向中继UE配置对应的中继功能配置信息，以辅助中继UE判断自身的当前参数值是否符合中继UE的中继功能配置信息。在实施例中，当中继UE接入网络后，基站向中继UE提供中继功能配置信息，以辅助中继UE判断当前自身是否适合充当中继UE。
在实施例中，UE到网络的中继功能配置信息，至少包括下述之一：
Uu接口上的参考信号接收功率RSRP门限值；直通链路接口PC5接口上的RSRP门限值；Uu接口上的业务优先级门限值；PC5接口上的业务优先级门限值；资源池忙闲程度门限值；绝对速度门限值；Uu接口为第一通信节点和第二通信节点之间的接口。
在实施例中，基站可以为UE配置Uu接口上的RSRP门限值，包括最大门限值和/或最小门限值。在实施例中，为了避免乒乓效应，可以包括迟滞值，在UE测量的Uu接口上的RSRP测量值小于或等于最大门限减迟滞值，和/或大于或等于最小门限时加迟滞值的情况下，UE可以成为中继UE。而当UE成为中继UE后，当UE测量的Uu接口上的RSRP测量值大于或等于最大门限值加迟滞值，或小于等于最小门限值减迟滞值时，UE则不能充当中继UE。
在实施例中，基站可以为UE配置PC5接口上的RSRP门限值，包括最大门限值和最小门限值，在UE测量其他UE发送的直接通信请求消息或者发现消息的RSRP的情况下，当RSRP测量值小于或等于最大门限值，同时大于或等于最小门限值时，UE可以成为中继UE，从而可以保证中继UE传输时的链路质量，从而保证业务传输可靠性。
在实施例中，基站可以为UE配置Uu接口上的业务优先级门限值(比如，优先级指示可以为PC5接口上的5QI(PC5 5QI，PQI)，第五代移动通信系统 服务质量标识(the 5th Generation mobile communication system Quality of Service Identifier，5G QoS ID，5QI)，优先级)，当该UE在Uu接口上的所有业务优先级数值都高于业务优先级门限值时(优先级数值越高，业务优先级越低)，该UE可以成为中继UE。
在实施例中，基站可以为UE配置PC5接口上的业务优先级门限值(比如，该优先级指示可以为PQI，5QI，优先级)，当该UE在PC5接口上的所有非中继业务优先级数值都高于业务优先级门限值时(优先级数值越高，业务优先级越低)，该UE可以成为relay UE。
在实施例中，基站可以为UE配置资源池忙闲程度门限值(信道忙碌比率(Channel Busy Rate，CBR)Threshold)，当UE在基站配置的资源池上测量的忙闲程度测量值低于所配置的资源池忙闲程度门限值时，UE可以使用该资源池传输中继业务，从而可以避免UE在传输时选择到与其他UE碰撞的资源的概率，保证UE传输的可靠性。
在实施例中，基站可以为UE配置绝对速度门限值，当UE的行驶速度小于所配置的绝对速度门限值时，UE可以成为relay UE。
在实施例中，UE到UE的中继功能配置信息，至少包括下述之一：Uu接口上的RSRP门限值；PC5接口上的RSRP门限值；Uu接口上的业务优先级门限值；PC5接口上的业务优先级门限值；资源池忙闲程度门限值；绝对速度门限值。
在实施例中，基站可以为UE配置Uu接口上的RSRP门限值，包括最大门限值和/或最小门限值。在实施例中，为了避免乒乓效应，可以包括迟滞值，在UE测量的Uu接口上的RSRP测量值小于或等于最大门限减迟滞值，和/或大于或等于最小门限时加迟滞值的情况下，UE可以成为中继UE。而当UE成为中继UE后，当UE测量的Uu接口上的RSRP测量值大于或等于最大门限值加迟滞值，或小于等于最小门限值减迟滞值时，UE则不能充当中继UE，从而可以保证relay UE传输时的链路质量，从而保证业务传输可靠性。
在实施例中，基站可以为UE配置PC5接口上的RSRP门限值，包括UE与remote UE1之间的最大RSRP门限值和/或最小RSRP门限值，以及UE与remote UE2之间的最大RSRP门限值和最小RSRP门限值。在实施例中，为了避免乒乓效应，可以包括迟滞值。在实施例中，在UE与remote UE1之间的RSRP测量值大于或等于所配置的最小RSRP门限值加迟滞值并小于或等于所配置的最大RSRP门限值减迟滞值，同时与remote UE2之间的RSRP测量值大于或等于所配置的最小RSRP门限值加迟滞值并小于或等于所配置的最大RSRP门限值减迟滞值的情况下，UE可以成为中继UE，可以保证中继UE传输时的链路质量， 从而保证业务传输可靠性。
在实施例中，基站可以为UE配置Uu接口上的业务优先级门限值(比如，该优先级指示可以为PQI，5QI，优先级)，当该UE在Uu接口上的所有业务优先级数值都高于业务优先级门限值时(优先级数值越高，业务优先级越低)，该UE可以成为中继UE。
在实施例中，基站可以为UE配置PC5接口上的业务优先级门限值(比如，该优先级指示可以为PQI，5QI，优先级)，当该UE在PC5接口上的所有非中继业务优先级数值都高于业务优先级门限值时(优先级数值越高，业务优先级越低)，该UE可以成为中继UE。
在实施例中，基站可以为UE配置资源池忙闲程度门限值，在UE在配置的资源池上测量的忙闲程度测量值低于所配置的资源池忙闲程度门限值的情况下，UE可以使用该资源池传输relay业务，从而可以避免UE在传输时选择到与其他UE碰撞的资源的概率，保证UE传输的可靠性。
在实施例中，基站可以为UE配置绝对速度门限值，在UE的行驶速度小于所配置的绝对速度门限值的情况下，UE可以成为relay UE。
在一实施例中，对于中继功能配置信息，上述实施例中的PC5接口上的RSRP门限值、PC5接口上的业务优先级门限值，以及资源池忙闲程度门限值的配置信息对于覆盖外UE，也可以通过预配置的方式下发至UE。
在一实现方式中，第一通信节点满足预配置或第二通信节点配置的中继UE选择准则信息。在实施例中，在第三通信节点(比如，远程UE)初始选择中继UE的情况下，远程UE可以读取基站配置或预配置的中继UE选择准则信息，从而选择满足以下条件的中继UE。
在实施例中，在第一通信节点支持UE到网络的中继功能的情况下，中继UE选择准则信息包括下述之一：PC5接口上的RSRP测量值大于RSRP门限值；Uu接口上的当前业务优先级为最高业务优先级；PC5接口上的当前业务优先级为最高优先级；SCI信息中的域地址指示信息；资源调度模式为预先配置模式；Uu无线接入技术(RAT)指示信息；当前服务小区标识(NCGI)信息；中继优先级指示信息。
在实施例中，在中继UE选择准则信息为PC5接口上的RSRP测量值大于RSRP门限值的情况下。在实施例中，基站为远程UE配置PC5接口上的RSRP门限值，远程UE对周围中继UE进行PC5接口RSRP测量，得到PC5接口上的RSRP测量值。在实施例中，中继UE发送的发现消息或直接通信请求消息或直接通信响应消息等，筛选出RSRP测量值大于RSRP门限值的所有中继UE作 为备选中继UE。然后，远程UE可以对备选中继UE的RSRP测量值进行排序，选择出最大的RSRP测量值对应的备选relay UE作为最后选择的中继UE。
在实施例中，在中继UE选择准则信息为Uu接口上的当前业务优先级为最高业务优先级的情况下。中继UE在发现消息、连接建立请求消息、连接建立响应消息中携带Uu接口当前业务最高优先级指示(比如，该优先级指示可以为PQI，5QI，优先级)，远程UE读取周围中继UE的发现消息中的最高优先级指示，并选择出对应最大的优先级指示的中继UE(优先级指示数值越大，表明该中继UE的Uu接口的业务优先级越低)。
在实施例中，在中继UE选择准则信息为PC5接口上的当前业务优先级为最高优先级的情况下。在实施例中，中继UE在发现消息、连接建立请求消息、连接建立响应消息中携带PC5接口当前业务最高优先级指示(比如，该优先级指示可以为PQI，5QI，优先级)，远程UE读取周围中继UE的发现消息、连接建立请求消息、连接建立响应消息中的最高优先级指示，并选择出对应最大的优先级指示的中继UE(优先级指示数值越大，表明该中继UE的PC5接口的业务优先级越低)。
在实施例中，在中继UE选择准则信息为SCI信息中的域地址指示信息的情况下。在实施例中，远程UE读取周围中继UE发送发现消息、连接建立请求消息、连接建立响应消息时对应的SCI信息，从SCI中读取中继UE所在域地址(zone ID)的指示信息，远程UE优先选择距离自身最近的中继UE。
在实施实例中，在中继UE选择准则信息为资源调度模式为预先配置模式的情况下。比如，预先配置模式可以为模式1、模式2。在实施例中，中继UE在发现消息、连接建立请求消息、连接建立响应消息中携带自身的资源调度模式，远程UE读取中继UE的发现消息后，根据自身的资源调度模式优先选择模式1或者模式2的中继UE。
在实施例中，在中继UE选择准则信息为Uu无线接入技术(RAT)指示信息、当前NCGI信息或中继优先级指示信息的情况下。在实施例中，中继UE在发现消息、发现附加消息、连接建立请求消息、连接建立响应消息中携带Uu RAT指示(比如，长期演进(Long Term Evolution，LTE)、NR、多射频技术双连接(Multi-RAT Dual Connectivity，MR-DC)指示、双链接(Dual Connectivity，DC)类型(比如，ENDC、NEDC或NGENDC))，UE根据自身能力选择合适的中继UE；NCGI(中继UE当前服务小区标识)；中继优先级指示，指示适合充当中继的优先程度(比如，优先级越高，表示为一个越优秀的中继，比如其自身电量充足、Uu接口业务少或Uu接口无高优先级业务等)。在实施例中，ENDC指的是4G无线接入网与5G NR的双连接；NEDC指的是5G NR与4G 无线接入网的双连接；NGENDC指的是在5G核心网下的4G无线接入网与5G NR的双连接。
在一实现方式中，在远程UE初始选择中继UE的情况下，远程UE可以读取基站或预配置的中继选择准则信息，从而选择满足以下条件的中继UE。在第一通信节点支持UE到UE的中继功能的情况下，中继选择准则信息包括下述之一：PC5接口上的RSRP测量值大于RSRP门限值；第一通信节点与第三通信节点之间的RSRP测量值最大；Uu接口上的当前业务优先级为最高优先级；PC5接口上的当前业务优先级为最高优先级；SCI信息中的域地址指示信息；资源调度模式为预先配置模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
在实施例中，在中继UE选择准则信息为PC5接口上的RSRP测量值大于RSRP门限值的情况下。在实施例中，远程UE对周围所有中继UE发送的发现消息、连接建立请求、消息或连接建立响应消息进行PC5接口上的RSRP测量，远程UE可以对备选中继UE的RSRP测量值进行排序，选择出最大的RSRP测量值对应的备选中继UE作为最后选择的中继UE。
在实施例中，在中继UE选择准则信息为第一通信节点与第三通信节点之间的RSRP测量值最大的情况下。在实施例中，中继UE在发现消息、连接建立请求消息或连接建立响应消息中携带与远程UE2之间的RSRP测量值，远程UE1可以选择所携带RSRP测量值最大的中继UE。
在实施例中，在中继UE选择准则信息为Uu接口上的当前业务优先级为最高优先级。在实施例中，中继UE在发现消息、连接建立请求消息、连接建立响应消息中携带Uu接口当前业务最高优先级指示，远程UE读取周围中继UE的发现消息、连接建立请求消息、连接建立响应消息中的最高优先级指示，并选择出对应最大的优先级指示的中继UE(优先级指示数值越大，表明该中继UE的Uu接口的业务优先级越低)。
在实施例中，在中继UE选择准则信息为PC5接口上的当前业务优先级为最高优先级的情况下。在实施例中，中继UE在发现消息、连接建立请求、消息或连接建立响应消息中携带PC5接口当前业务最高优先级指示(比如，该优先级指示可以为PQI，5QI，优先级)，远程UE读取周围中继UE的发现消息、连接建立请求、消息或连接建立响应消息中的最高优先级指示(比如，该优先级指示可以为PQI，5QI，优先级)，并选择出对应最大的优先级指示的中继UE(优先级指示数值越大，表明该中继UE的PC5接口的业务优先级越低)。
在实施例中，在中继UE选择准则信息为SCI信息中的域地址指示信息。在实施例中，远程UE读取周围中继UE发送发现消息、连接建立请求消息或连接建立响应消息时携带的SCI，从SCI中读取中继UE所在zone ID的指示信息， 远程UE优先选择距离自身最近的中继UE。
在实施例中，在中继UE选择准则信息为资源调度模式为预先配置模式的情况下。在实施例中，中继UE在发现消息或连接建立请求消息或连接建立响应消息中携带自身的资源调度模式，远程UE读取中继UE的发现消息后，根据自身的资源调度模式优先选择模式1或者模式2的中继UE。
在实施例中，在中继UE选择准则信息为Uu RAT指示信息、NCGI信息或中继优先级指示信息的情况下。在实施例中，中继UE在发现消息或发现附加消息、连接建立请求消息或连接请求响应消息中携带Uu RAT指示(比如，LTE、NR、MR-DC指示、DC类型(比如，ENDC、NEDC或NGENDC))，UE根据自身能力选择合适的中继UE；NCGI(中继UE当前服务小区标识)；中继优先级指示，指示适合充当中继的优先程度(比如，优先级越高，表示为一个越优秀的中继，比如其自身电量充足、Uu接口业务少或Uu接口无高优先级业务等)。
在一实现方式中，在远程UE选择到中继UE1并已经开展了一段时间的UE to Network中继业务的情况下，由于某些条件导致中继UE1已经不再适合继续帮助远程UE进行中继业务的转发时，远程UE需要进行中继UE的重选。在实施例中，提出了一种重选方法，包括检测当前处于通信中的当前第一通信节点的第二当前参数值；根据第二当前参数值对当前第一通信节点进行重选。
在一实施例中，在中继UE接入基站的情况下，第二当前参数值，至少包括下述之一：Uu接口上的RSRP测量值小于Uu接口上的RSRP门限值；当前电量小于预设电量门限值；第一通信节点和第三通信节点之间的PC5接口上的RSRP测量值小于PC5接口上的RSRP门限值；Uu接口上的业务优先级大于Uu接口上的业务优先级门限值；PC5接口上的业务优先级大于PC5接口上的业务优先级门限值。也就是说，中继UE可以由于以下条件至少之一，远程UE主动发起中继UE重选请求，并携带对应的原因值：Uu接口上的RSRP测量值变差，已经小于基站配置的RSRP门限值时；中继UE的当前电量过低，有节电需求时；远程UE和中继UE1之间PC5接口上的RSRP测量值变差；中继UE1有发送高优先级Uu接口上的数据需求(比如，该优先级指示可以为PQI，5QI，优先级)，该Uu接口上的业务优先级已经超过之前基站所配置的Uu接口上的业务优先级门限值；中继UE1有发送高优先级PC5接口上的数据需求(比如，该优先级指示可以为PQI，5QI，优先级)，该PC5接口上的业务优先级已经超过之前基站所配置的PC5接口上的业务优先级门限值。
在一实施例中，也可以由远程UE自身发起中继UE的重选。在实施例中，远程UE在之前和中继UE1建立好PC5-S/无线资源控制(Radio Resource Control， RRC)连接时，持续地监测周围其他中继UE发送的发现消息、连接建立请求消息或、连接建立响应消息，并根据一些条件判断周围的其他中继UE是否比当前中继UE1更适合为其充当中继UE。在实施例中，应用于第三通信节点的重选方法，还包括：检测除当前通信中的第一通信节点之外的其它第一通信节点发送的发现消息、连接建立请求消息或连接建立响应消息；根据发现消息、连接建立请求消息或连接建立响应消息中携带的第一预设消息对第一通信节点进行重选。
在一实施例中，在第一通信节点接入网络的情况下，第一预设消息，至少包括下述之一：Uu接口上的业务优先级小于当前通信中第一通信节点的业务优先级；PC5接口上的业务优先级小于当前通信中第一通信节点的业务优先级；RSRP测量值大于当前通信中第一通信节点之间的RSRP测量值；SCI消息中zone ID信息指示为距离最近的节点；资源调度模式为优先模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
在实施例中，在发现消息里携带了当前中继UE最高优先级的Uu口业务的优先级指示，远程UE利用该优先级指示与中继UE1的Uu口业务优先级进行比较，若其他中继UE的Uu口业务优先级低于中继UE1的业务优先级，则远程UE可以重选到对应的其他中继UE。
在实施例中，在发现消息里携带了当前中继UE最高优先级的PC5接口业务的优先级指示，远程UE利用该优先级指示与中继UE1的PC5接口业务优先级进行比较，若其他中继UE的PC5接口业务优先级低于中继UE1的业务优先级，则远程UE可以重选到对应的其他中继UE。
在实施例中，远程UE测量其他中继UE发送的发现消息、连接建立请求消息或连接建立响应消息的RSRP测量值高于远程UE与对应的中继UE1之间的RSRP测量值，则远程UE可以重选到对应的其他中继UE。
在实施例中，远程UE可以读取其他中继UE发送的发现消息、连接建立请求消息或连接建立响应消息对应的SCI中的zone ID信息，判断其他中继UE与远程UE之间的距离，若其他中继UE离远程UE更近，则远程UE可以重选到最近的其他中继UE。
在实施例中，在发现消息、连接建立请求消息或连接建立响应消息里可以携带中继UE的资源调度模式信息，基站可以对远程UE配置优先模式，远程UE可以重新选择被配置为优先模式的中继UE。
在实施例中，中继UE在发现消息、发现附加消息、连接建立请求消息或连接建立响应消息中携带Uu RAT指示(比如，LTE、NR、MR-DC指示、DC类 型--ENDC/NEDC/NGENDC)，UE根据自身能力选择合适的中继UE；NCGI(中继UE当前服务小区标识)；中继优先级指示，指示适合充当中继的优先程度(比如优先级越高，表示为一个越优秀的中继，比如其自身电量充足/Uu接口业务少/Uu接口无高优先级业务等)。
在一实现方式中，在远程UE1选择到中继UE1并且中继UE1已经连接到远程UE2且已经开展UE to UE中继业务的情况下，由于某些条件导致中继UE1已经不再适合继续帮助远程UE1开展中继业务时，远程UE1需要进行中继UE的重选。在实施例中，提出了一种重选方法，包括检测当前处于通信中的当前第一通信节点的第二当前参数值；根据第二当前参数值对当前第一通信节点进行重选。
在一实施例中，在第一通信节点接入UE的情况下，第二当前参数值，至少包括下述之一：Uu接口上的RSRP测量值小于Uu接口上的RSRP门限值；当前电量小于预设电量门限值；第一通信节点和第三通信节点之间的PC5接口上的RSRP测量值小于PC5接口上的RSRP门限值；Uu接口上的业务优先级大于Uu接口上的业务优先级门限值；PC5接口上的业务优先级大于PC5接口上的业务优先级门限值；第一通信节点和对端第三通信节点之间的RSRP测量值小于PC5接口上的RSRP门限值；Uu RAT指示信息；NCGI信息；中继优先级指示信息。也就是说，中继UE可以由于以下条件至少之一，远程UE主动发起中继UE重选请求或者PC5-RRC链路释放消息，并携带对应的原因值：
Uu接口上的RSRP测量值变差，已经小于基站配置的RSRP门限值时；中继UE的当前电量过低，有节电需求时；远程UE和中继UE1之间PC5接口上的RSRP测量值变差；中继UE1有发送高优先级Uu接口上的数据需求，该Uu接口上的业务优先级已经超过之前基站所配置的Uu接口上的业务优先级门限值；中继UE1有发送高优先级PC5接口上的数据需求，该PC5接口上的业务优先级已经超过之前基站所配置的PC5接口上的业务优先级门限值；中继UE1与远程UE2之间的RSRP测量值变差，已经小于基站配置的RSRP门限值时；中继UE在发现消息、发现附加消息、连接建立请求消息或连接建立响应消息中携带Uu RAT指示(比如，LTE、NR、MR-DC指示、DC类型--ENDC/NEDC/NGENDC)，UE根据自身能力选择合适的中继UE；NCGI(中继UE当前服务小区标识)；中继优先级指示，指示适合充当中继的优先程度(如优先级越高，表示为一个越优秀的中继，比如其自身电量充足/Uu接口业务少/Uu接口无高优先级业务等)；在实施例中，中继UE在发现消息、发现附加消息、连接建立请求消息或连接建立响应消息中携带中继UE自身的载波聚合配置，和/或频带组合的能力。
在一实施例中，也可以由远程UE自身发起中继UE的重选。在实施例中，远程UE在之前和中继UE1建立好PC5-RRC连接时也会持续地监测周围其他中继UE发送的发现消息，并根据一些条件判断周围的其他中继UE是否比当前中继UE1更适合为其充当中继UE。在实施例中，应用于第三通信节点的重选方法，还包括：检测除当前通信中的第一通信节点之外的其它第一通信节点发送的发现消息、连接建立请求消息或连接建立响应消息；根据发现消息、连接建立请求消息或连接建立响应消息中携带的第一预设消息对第一通信节点进行重选。
在一实施例中，在第一通信节点接入UE的情况下，第一预设消息，至少包括下述之一：Uu接口上的业务优先级小于当前通信中第一通信节点的业务优先级；PC5接口上的业务优先级小于当前通信中第一通信节点的业务优先级；RSRP测量值大于当前通信中第一通信节点之间的RSRP测量值；SCI消息中的zone ID信息指示为距离最近的节点；资源调度模式为优先模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
在实施例中，在发现消息里携带了当前中继UE最高优先级的Uu口业务的优先级指示，远程UE利用该优先级指示与中继UE1的Uu口业务优先级进行比较，若其他中继UE的Uu口业务优先级低于中继UE1的业务优先级，则远程UE可以重选到对应的其他中继UE。
在实施例中，在发现消息里携带了当前中继UE最高优先级的PC5接口业务的优先级指示，远程UE利用该优先级指示与中继UE1的PC5接口业务优先级进行比较，若其他中继UE的PC5接口业务优先级低于中继UE1的业务优先级，则远程UE可以重选到对应的其他中继UE。
在实施例中，远程UE测量其他中继UE发送的发现消息的RSRP测量值高于远程UE与对应的中继UE1之间的RSRP测量值，则远程UE可以重选到对应的其他中继UE。
在实施例中，远程UE可以读取其他中继UE发送的发现消息对应的SCI中的zone ID信息，判断其他中继UE与远程UE之间的距离，若其他中继UE离远程UE更近，则远程UE可以重选到最近的其他中继UE。
在实施例中，在发现消息里可以携带中继UE的资源调度模式信息，基站可以对远程UE配置优先模式，远程UE可以重新选择被配置为优先模式的中继UE。
在实施例中，中继UE在发现消息、发现附加消息、连接建立请求消息或连接建立响应消息中携带Uu RAT指示(比如，LTE、NR、MR-DC指示、DC类型--ENDC/NEDC/NGENDC)，UE根据自身能力选择合适的中继UE；NCGI(中 继UE当前服务小区标识)；中继优先级指示，指示适合充当中继的优先程度(比如，优先级越高，表示为一个越优秀的中继，比如其自身电量充足/Uu接口业务少/Uu接口无高优先级业务等)；在实施例中，中继UE在发现消息或发现附加消息、连接建立请求消息、连接建立响应消息中携带中继UE自身的载波聚合配置，和/或频带组合的能力。
在一实现方式中，在中继UE1与远程UE2之间的链路质量变差的情况下，远程UE1此时可以认为当前已经不再适合与远程UE2进行UE-to-UE中继的业务。因此，远程UE1应该向中继UE1发送远程UE释放请求，指示中继UE1释放与远程UE2之间的单播链接，但远程UE1此时仍有未发送完的数据。因此，中继UE1应该执行远程UE reselection，寻找一个对当前中继业务感兴趣的远程UE2’，期间远程UE1一直处于等待状态，但为了避免远程UE1等待时间过长或者中继UE1周围已经没有对当前中继业务感兴趣的远程UE2’造成远程UE1浪费过长的等待时间，远程UE1可以为中继UE1配置一个远程UE重选定时器，当远程UE1指示中继UE1释放与远程UE2之间的单播连接时，重选定时器启动，当重选定时器超时后中继UE1仍然没有找到合适的远程UE2’时，远程UE1可以考虑进行中继UE重选。
在一实现方式中，在中继UE1与远程UE2之间的链路质量变差的情况下，由远程UE2触发中继UE重选。在实施例中，当中继UE1与远程UE2之间的链路质量变差，远程UE2主动释放与中继UE1之间的单播链接，此时周围的其他中继UE都开始发送携带远程UE1的信息的发现消息或者direct communication request消息，相应地，远程UE2根据不同中继UE发送的发现消息进行RSRP测量，并选择RSRP测量值最好的中继UE作为重选的新的中继UE。
在一实现方式中，一种传输方法，应用于UE，包括：接收直通链路安全配置信息；根据直通链路安全配置信息进行直通链路通信传输。
在一实施例中，直通链路安全配置信息至少包括下述之一：加密指示；完整性保护指示。
在一实施例中，直通链路安全配置信息的配置粒度包括下述之一：针对特定通信目标配置直通链路安全配置信息；针对每个直通链路承载配置直通链路安全配置信息。
在一实施例中，接收直通链路安全配置信息，至少包括下述之一：
接收基站通过RRC专有信令或系统消息发送的直通链路安全配置信息；接收预配置信息中的直通链路安全配置信息。
在一实施例中，在根据直通链路安全配置信息进行直通链路通信传输之前， 还包括：通过PC5RRC消息发送直通链路安全配置信息至目标UE。
在一实施例中，直通链路单播通信支持对Sidelink(SL)信令和数据进行加密和完整性保护传输。
在一实施例中，针对覆盖内UE，基站通过RRC专有信令或系统消息配置直通链路安全配置信息，指示直通链路单播通信是否进行加密和/或完整性保护传输。
在一实施例中，针对覆盖外UE，预配置信息中配置直通链路安全配置信息，指示直通链路单播通信是否进行加密和/或完整性保护传输。
在一实现方式中，UE接收sidelink安全配置信息；UE根据sidelink安全配置信息进行sidelink通信传输。
在一实施例中，sidelink安全配置信息包括以下至少之一：加密指示，完整性保护指示。
在一实施例中，sidelink安全配置信息的配置粒度包括以下之一：针对特定通信目标配置sidelink安全配置信息；针对每个sidelink承载配置sidelink安全配置信息。
在一实施例中，UE接收sidelink安全配置信息，包括以下至少之一：
UE接收基站通过RRC专有信令或系统消息发送的sidelink安全配置信息；UE接收预配置信息中的sidelink安全配置信息。
在一实施例中，UE根据sidelink安全配置信息进行sidelink通信传输之前，还包括：
UE通过PC5RRC消息发送sidelink安全配置信息给目标UE。
在一实施例中，Sidelink单播通信支持对SL信令和数据进行加密和完整性保护传输。
在一实施例中，对于覆盖内UE，基站可通过RRC专有信令或系统消息配置sidelink安全配置信息，指示sidelink单播通信是否进行加密和或完整性保护传输。
在一实施例中，对于覆盖外UE，预配置信息中可配置sidelink安全配置信息，指示sidelink单播通信是否进行加密和或完整性保护传输。
在一实施例中，sidelink安全配置信息包括以下至少之一：加密指示，完整性保护指示。
在一实施例中，sidelink安全配置信息可以是针对特定通信目标进行配置， 即sidelink安全配置信息适用于针对该特定通信目标或特定单播通信链路的所有sidelink承载数据传输；或者，sidelink安全配置信息可以是针对每个sidelink承载进行配置，即sidelink安全配置信息携带在sidelink承载配置信息中，指示当前sidelink承载数据传输时是否进行加密和或完整性保护传输。
在一实施例中，UE根据sidelink安全配置信息进行sidelink通信传输，若sidelink安全配置信息中指示针对特定通信目标或特定sidelink承载进行加密和或完整性保护传输，则UE针对特定通信目标的所有sidelink承载数据传输或针对特定sidelink承载数据传输进行加密和或完整性保护传输。
在一实施例中，对于要进行sidelink单播通信的两个UE，UE可通过PC5RRC信令发送sidelink安全配置信息给目标UE，以使目标UE能够相应地进行解密和/或完整性保护验证从而正确接收数据。在实施例中，UE接收目标UE发送的PC5RRC响应消息。
在一实现方式中，本实施例提供一种优先级确定方法，包括：获取直通链路信道状态信息(Channel State Information，CSI)报告的优先级信息；根据优先级信息确定直通链路报告的优先级。
在一实施例中，直通链路CSI报告的优先级信息包括：未超时的直通链路CSI报告的优先级信息；超时的直通链路CSI报告的优先级信息。
在一实施例中，获取直通链路CSI报告的优先级信息，包括：通过预配置的方式获取或者通过网络侧接收直通链路CSI report的优先级信息。
在一实施例中，直通链路CSI报告的优先级信息包括：未超时的直通链路CSI报告的优先级值；超时的直通链路CSI报告的优先级值。
在一实施例中，直通链路CSI报告的优先级信息包括：超时的直通链路CSI报告的优先级最低；或者超时的直通链路CSI报告的优先级逻辑信道。
在实施例中，确定优先级的过程包括步骤1-步骤2。
步骤1：UE获取sidelink CSI report的优先级信息；步骤2：UE确定sidelink CSI report的优先级。
在实施例中，sidelink CSI report的优先级信息包括未超时的sidelink CSI report的优先级信息以及超时的sidelink CSI report的优先级信息。
在实施例中，UE获取sidelink CSI report的优先级信息包括：UE通过预配置的方式获取或者通过网络侧接收sidelink CSI report的优先级信息。
在实施例中，sidelink CSI report的优先级信息包括：未超时的sidelink CSI report的优先级值或者超时的sidelink CSI report的优先级信息值。
在实施例中，sidelink CSI report的优先级信息包括：超时的sidelink CSI report的优先级最低；或者超时的sidelink CSI report的优先级逻辑信道。
在实施例中，UE确定sidelink CSI report的优先级后，在媒体接入控制(Medium Access Control，MAC)实体进行组装的过程中，超时的sidelink CSI report的优先级最低。
在一实现方式中，在模式2(mode2)UE进行资源池初始选择的情况下，对于每一个UE的高层配置的资源池，如果该资源池当前的测量CBR值小于UE所有有数据待发送的逻辑信道中最高优先级的逻辑信道对应的CBR重选门限时；且如果有数据待发送的逻辑信道中最高优先级的逻辑信道是使能混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)反馈的且该资源池被配置有物理直通侧链反馈信道(Physical Sidelink Feedback Channel，PSFCH)资源，那么UE可以将这个资源池作为可选的备选资源池。
在mode2UE进行资源池重选的情况下，如果UE触发了资源重选，且资源重选的触发条件不是因为UE组装的MAC协议数据单元(Protocol Data Unit，PDU)需要使能HARQ反馈但是当前所使用的资源池没有被配置反馈资源，且当前所使用的资源池CBR测量值是小于UE所有有数据待发的逻辑信道中最高优先级逻辑信道对应的CBR驻留门限值，则UE可以继续使用当前资源池。
否则，如果当前所使用的资源池CBR测量值是大于UE所有有数据待发的逻辑信道中最高优先级逻辑信道对应的CBR驻留门限值，对于每一个UE的高层配置的资源池，当前资源池CBR测量值是小于UE所有有数据待发的逻辑信道中最高优先级逻辑信道对应的CBR驻留门限值，则UE可以将该资源池作为可选的备选资源池。
否则，如果资源重选的触发条件是因为UE组装的MAC PDU需要使能HARQ反馈但是当前所使用的资源池没有被配置反馈资源，对于每一个UE的高层配置的资源池，当前资源池CBR测量值是小于UE所有有数据待发的逻辑信道中最高优先级逻辑信道对应的CBR重选门限值，那么UE可以将这个资源池作为可选的备选资源池。
在UE有多个备选资源池的情况下，UE可以从中选择CBR测量值最低的资源池进行使用。
在一实施例中，图5是本申请实施例提供的一种启动装置的结构框图。本实施例应用于第一通信节点。如图5所示，本实施例中的启动装置包括：接收器410和启动器420。
接收器410，配置为接收第二通信节点发送的中继功能配置信息；启动器 420，配置为根据中继功能配置信息和第一当前参数值的比较结果，启动对应的中继业务传输功能，第一当前参数值包括：当前测量值、当前业务优先级。
本实施例提供的启动装置设置为实现图2所示实施例的启动方法，本实施例提供的启动装置实现原理和技术效果类似，此处不再赘述。
在一实施例中，中继功能配置信息包括下述中的信息至少之一：用户设备UE到网络的中继功能配置信息；UE到UE的中继功能配置信息。
在一实施例中，在第一通信节点处于空闲态或非活跃态进行小区选择的情况下，选择支持中继功能的第二通信节点。
在一实施例中，第一通信节点通过以下方式中的至少之一判断第二通信节点是否支持UE到网络的中继功能：
在第二通信节点的当前覆盖范围内接收到UE到网络的中继功能相关的配置信息，配置信息被包含在车联网V2X的系统消息块SIB消息中或独立的SIB消息中；在第二通信节点的当前覆盖范围内接收到SIB1、SIB2或SIB4中指示的当前服务小区支持UE到网络的中继功能的指示信息；在第二通信节点的当前覆盖范围内接收到专用于UE到网络的中继功能的物理随机接入PRACH资源；在第二通信节点的当前覆盖范围内接收到专用于UE到网络的中继功能的访问类别和访问标识。
在一实施例中，U2N的中继功能配置信息被包含的位置，包括下述之一：V2X的SIB消息；UE到UE(U2U)；独立的SIB消息。
在一实施例中，第一通信节点通过以下方式中的至少之一判断第二通信节点是否支持UE到UE的中继功能：
在当前第二通信节点的覆盖范围内接收到UE到UE的中继功能相关的配置信息，配置信息被包含在V2X的SIB消息中或UE到网络中继的SIB消息中或独立的SIB消息中；在当前第二通信节点的覆盖范围内接收到SIB1、SIB2或SIB4中指示的当前服务小区支持UE到UE的中继功能的指示信息；在当前第二通信节点的覆盖范围内接收到专用于UE到UE的中继功能的物理随机接入PRACH资源；在当前第二通信节点的覆盖范围内接收到专用于UE到UE的中继功能的访问类别和访问标识。
在一实施例中，U2U的中继功能配置信息被包含的位置，包括下述之一：V2X的SIB消息；U2N；独立的SIB消息。
在一实施例中，应用于第一通信节点的启动装置，还包括：选择器，配置为根据中继功能配置信息的被包含位置选择对应支持中继功能的频点。
在一实施例中，在中继功能配置信息为UE到网络的中继功能配置信息的情况下，根据中继功能配置信息的存储位置选择对应支持中继功能的频点，包括下述之一：
在UE到网络的中继功能配置信息在独立的SIB消息中的情况下，优先选择支持UE到网络的中继功能的频点；在UE到网络的中继功能配置信息在V2X的SIB消息中的情况下，优先选择支持UE到网络的中继功能，且支持NR V2X的频点。
在一实施例中，在中继功能配置信息为UE到UE的中继功能配置信息的情况下，根据中继功能配置信息的被包含位置选择对应支持中继功能的频点，包括下述之一：
在UE到UE的中继功能配置信息在独立的SIB消息中的情况下，优先选择支持UE到UE的中继功能的频点；在UE到UE的中继功能配置信息在V2X的SIB消息中的情况下，优先选择支持UE到UE的中继功能，且支持NR V2X的频点；在UE到UE的中继功能配置信息在UE到网络中继的SIB消息中的情况下，优先选择支持UE到UE的中继功能，且支持UE到网络中继功能的频点；在UE到UE的中继功能配置信息在UE到网络中继的SIB消息和V2X的SIB消息中的情况下，优先选择支持UE到UE的中继功能，支持UE到网络的中继功能，且支持NR V2X的频点。
在一实施例中，UE到网络的中继功能配置信息，至少包括下述之一：
Uu接口上的参考信号接收功率RSRP门限值；直通链路接口(PC5接口)上的RSRP门限值；Uu接口上的业务优先级门限值；PC5接口上的业务优先级门限值；资源池忙闲程度门限值；绝对速度门限值；Uu接口为第一通信节点和第二通信节点之间的接口。
在一实施例中，根据中继功能配置信息和第一当前参数值的比较结果，启动对应的中继功能，至少包括下述之一：
在Uu接口上的RSRP测量值小于或等于最大门限减迟滞值，和/或，大于或等于最小门限加迟滞值的情况下，启动UE到网络的中继功能；在PC5接口上的RSRP测量值小于或等于最大门限值，且大于或等于最小门限值的情况下，启动UE到网络的中继功能；在Uu接口上所有业务优先级数值大于或小于业务优先级门限值的情况下，启动UE到网络的中继功能；在PC5接口上所有非中继业务优先级数值大于或小于业务优先级门限值的情况下，启动UE到网络的中继功能；在资源池忙闲程度测量值低于或高于资源池忙闲程度门限值的情况下，启动UE到网络的中继功能；在第一通信节点的行驶速度小于或大于绝对速度门 限值的情况下，启动UE到网络的中继功能。
在一实施例中，UE到UE的中继功能配置信息，至少包括下述之一：
Uu接口上的RSRP门限值；PC5接口上的RSRP门限值；Uu接口上的业务优先级门限值；PC5接口上的业务优先级门限值；资源池忙闲程度门限值；绝对速度门限值。
在一实施例中，根据中继功能配置信息和第一当前参数值的比较结果，启动对应的中继功能，至少包括下述之一：
在Uu接口上的RSRP测量值小于或等于最大门限减迟滞值，和/或，大于或等于最小门限加迟滞值的情况下，启动UE到UE的中继功能；在PC5接口上的RSRP测量值小于或等于最大门限值，且大于或等于最小门限值的情况下，启动UE到UE的中继功能；在Uu接口上所有业务优先级数值大于业务优先级门限值的情况下，启动UE到UE的中继功能；在PC5接口上所有非中继业务优先级数值大于业务优先级门限值的情况下，启动UE到UE的中继功能；在资源池忙闲程度测量值低于资源池忙闲程度门限值的情况下，启动UE到UE的中继功能；在第一通信节点的行驶速度小于绝对速度门限值的情况下，启动UE到UE的中继功能。
在一实施例中，第一通信节点满足预配置或第二通信节点配置的中继UE选择准则信息。
在一实施例中，应用于第一通信节点的启动装置，还包括：广播器，配置为通过发现消息或者直接通信请求消息向第三通信节点广播中继UE选择准则信息。
在一实施例中，在第一通信节点支持UE到网络的中继功能的情况下，中继UE选择准则信息，包括下述之一：PC5接口上的RSRP测量值大于RSRP门限值；Uu接口上的当前业务优先级为最高业务优先级；PC5接口上的当前业务优先级为最高优先级；SCI信息中的域地址指示信息；资源调度模式为预先配置模式；Uu无线接入技术(RAT)指示信息；当前服务小区标识(NCGI)信息；中继优先级指示信息。
在一实施例中，在第一通信节点支持UE到UE的中继功能的情况下，中继UE选择准则信息，包括下述之一：PC5接口上的RSRP测量值大于RSRP门限值；第一通信节点与第三通信节点之间的RSRP测量值最大；Uu接口上的当前业务优先级为最高优先级；PC5接口上的当前业务优先级为最高优先级；SCI信息中的域地址指示信息；资源调度模式为预先配置模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
在一实施例中，图6是本申请实施例提供的另一种启动装置的结构框图。本实施例应用于第二通信节点。如图6所示，本实施例中的启动装置包括：第一配置模块510和发送器520。
第一配置模块510，配置为为第一通信节点配置中继功能配置信息；发送器520，配置为将中继功能配置信息发送至第一通信节点；中继功能配置信息用于触发第一通信节点启动中继业务传输功能。
本实施例提供的启动装置设置为实现图3所示实施例的启动方法，本实施例提供的启动装置实现原理和技术效果类似，此处不再赘述。
在一实施例中，应用于第二通信节点的启动装置，还包括：第二配置模块，配置为为第三通信节点配置中继UE选择准则信息。
在一实施例中，中继功能配置信息包括下述信息中的至少之一：用户设备UE到网络的中继功能配置信息；UE到UE的中继功能配置信息。
在一实施例中，通过以下方式中的至少之一判断第二通信节点是否支持UE到网络的中继功能：
在第二通信节点的当前覆盖范围内接收到UE到网络的中继功能相关的配置信息，配置信息被包含在V2X的SIB消息中或独立的SIB消息中；在第二通信节点的当前覆盖范围内接收到SIB1、SIB2或SIB4中指示的当前服务小区支持UE到网络的中继功能的指示信息；在第二通信节点的当前覆盖范围内接收到专用于UE到网络的中继功能的PRACH资源；在第二通信节点的当前覆盖范围内接收到专用于UE到网络的中继功能的访问类别和访问标识。
在一实施例中，U2N的中继功能配置信息被包含的位置，包括下述之一：V2X的SIB消息；UE到UE(U2U)；独立的SIB消息。
在一实施例中，通过以下方式中的至少之一判断第二通信节点是否支持UE到UE的中继功能：
在当前第二通信节点的覆盖范围内接收到UE到UE的中继功能相关的配置信息，配置信息被包含在V2X的SIB消息中或UE到网络中继的SIB消息中或独立的SIB消息中；在当前第二通信节点的覆盖范围内接收到SIB1、SIB2或SIB4中指示的当前服务小区支持UE到UE的中继功能的指示信息；在当前第二通信节点的覆盖范围内接收到专用于UE到UE的中继功能的PRACH资源；在当前第二通信节点的覆盖范围内接收到专用于UE到UE的中继功能的访问类别和访问标识。
在一实施例中，U2U的中继功能配置信息被包含的位置，包括下述之一：V2X的SIB消息；U2N；独立的SIB消息。
在一实施例中，UE到网络的中继功能配置信息，至少包括下述之一：
Uu接口上的参考信号接收功率RSRP门限值；直通链路接口(PC5接口)上的RSRP门限值；Uu接口上的业务优先级门限值；PC5接口上的业务优先级门限值；资源池忙闲程度门限值；绝对速度门限值；Uu接口为第一通信节点和第二通信节点之间的接口。
在一实施例中，UE到UE的中继功能配置信息，至少包括下述之一：
Uu接口上的RSRP门限值；PC5接口上的RSRP门限值；Uu接口上的业务优先级门限值；PC5接口上的业务优先级门限值；资源池忙闲程度门限值；绝对速度门限值。
在一实施例中，应用于第二通信节点的启动装置，还包括：第三配置模块，配置为为第一通信节点配置中继UE选择准则信息。
在一实施例中，在第一通信节点支持UE到网络的中继功能的情况下，中继UE选择准则信息，包括下述之一：PC5接口上的RSRP测量值大于RSRP门限值；Uu接口上的当前业务优先级为最高业务优先级；PC5接口上的当前业务优先级为最高优先级；SCI信息中的域地址指示信息；资源调度模式为预先配置模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
在一实施例中，在第一通信节点支持UE到UE的中继功能的情况下，中继UE选择准则信息，包括下述之一：PC5接口上的RSRP测量值大于RSRP门限值；第一通信节点与第三通信节点之间的RSRP测量值最大；Uu接口上的当前业务优先级为最高优先级；PC5接口上的当前业务优先级为最高优先级；SCI信息中的域地址指示信息；资源调度模式为预先配置模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
在一实施例中，图7是本申请实施例提供的一种重选装置的结构框图。本实施例应用于第三通信节点。如图7所示，本实施例中的重选装置包括：第一检测器610和第一重选器620。
第一检测器610，配置为检测当前处于通信中的当前第一通信节点的第二当前参数值；第一重选器620，配置为根据第二当前参数值对当前第一通信节点进行重选。
本实施例提供的重选装置设置为实现图4所示实施例的重选方法，本实施例提供的重选装置实现原理和技术效果类似，此处不再赘述。
在一实施例中，在第一通信节点接入网络的情况下，第二当前参数值，至少包括下述之一：Uu接口上的RSRP测量值小于Uu接口上的RSRP门限值；当前电量小于预设电量门限值；第一通信节点和第三通信节点之间的PC5接口 上的RSRP测量值小于PC5接口上的RSRP门限值；Uu接口上的业务优先级大于Uu接口上的业务优先级门限值；PC5接口上的业务优先级大于PC5接口上的业务优先级门限值。
在一实施例中，在第一通信节点接入UE的情况下，第二当前参数值，至少包括下述之一：Uu接口上的RSRP测量值小于Uu接口上的RSRP门限值；当前电量小于预设电量门限值；第一通信节点和第三通信节点之间的PC5接口上的RSRP测量值小于PC5接口上的RSRP门限值；Uu接口上的业务优先级大于Uu接口上的业务优先级门限值；PC5接口上的业务优先级大于PC5接口上的业务优先级门限值；第一通信节点和对端第三通信节点之间的RSRP测量值小于PC5接口上的RSRP门限值；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
在一实施例中，应用于第三通信节点的重选装置，还包括：第二检测器，配置为检测除当前通信中的第一通信节点之外的其它第一通信节点发送的发现消息、连接建立请求消息或连接建立响应消息；第二重选器，配置为根据发现消息、连接建立请求消息或连接建立响应消息中携带的第一预设消息对第一通信节点进行重选。
在一实施例中，在第一通信节点接入网络的情况下，第一预设消息，至少包括下述之一：Uu接口上的业务优先级小于当前通信中第一通信节点的业务优先级；PC5接口上的业务优先级小于当前通信中第一通信节点的业务优先级；RSRP测量值大于当前通信中第一通信节点之间的RSRP测量值；SCI消息中zone ID信息指示为距离最近的节点；资源调度模式为优先模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
在一实施例中，在第一通信节点接入UE的情况下，第一预设消息，至少包括下述之一：Uu接口上的业务优先级小于当前通信中第一通信节点的业务优先级；PC5接口上的业务优先级小于当前通信中第一通信节点的业务优先级；RSRP测量值大于当前通信中第一通信节点之间的RSRP测量值；SCI消息中的zone ID信息指示为距离最近的节点；资源调度模式为优先模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
图8是本申请实施例提供的一种设备的结构示意图。如图8所示，本申请提供的设备，包括：处理器710、存储器720和通信模块730。该设备中处理器710的数量可以是一个或者多个，图8中以一个处理器710为例。该设备中存储器720的数量可以是一个或者多个，图8中以一个存储器720为例。该设备的处理器710、存储器720和通信模块730可以通过总线或者其他方式连接，图8中以通过总线连接为例。在该实施例中，该设备为无源光网络设备。
存储器720作为一种计算机可读存储介质，可设置为存储软件程序、计算机可执行程序以及模块，如本申请任意实施例的设备对应的程序指令/模块(例如，启动置中的接收器和启动器)。存储器720可包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据设备的使用所创建的数据等。此外，存储器720可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储器720可包括相对于处理器710远程设置的存储器，这些远程存储器可以通过网络连接至设备。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
通信模块，配置为在第一通信节点、第二通信节点和第三通信节点之间进行通信交互。
上述提供的设备可设置为执行上述任意实施例提供的应用于第一通信节点的启动方法，具备相应的功能和效果。
在设备为第二通信节点的情况下，上述提供的设备可设置为执行上述任意实施例提供的应用于第二通信节点的启动方法，具备相应的功能和效果。
在设备为第三通信节点的情况下，上述提供的设备可设置为执行上述任意实施例提供的应用于第三通信节点的重选方法，具备相应的功能和效果。
本申请实施例还提供一种包含计算机可执行指令的存储介质，计算机可执行指令在由计算机处理器执行时用于执行应用于第一通信节点的一种启动方法，该方法包括：接收第二通信节点发送的中继功能配置信息；根据中继功能配置信息和第一当前参数值的比较结果，启动对应的中继功能，第一当前参数值包括：当前测量值、当前业务优先级。
本申请实施例还提供一种包含计算机可执行指令的存储介质，计算机可执行指令在由计算机处理器执行时用于执行应用于第二通信节点的一种启动方法，该方法包括：为第一通信节点配置中继功能配置信息；将中继功能配置信息发送至第一通信节点；中继功能配置信息用于触发第一通信节点启动中继业务传输功能。
本申请实施例还提供一种包含计算机可执行指令的存储介质，计算机可执行指令在由计算机处理器执行时用于执行应用于第三通信节点的一种重选方法，该方法包括：检测当前处于通信中的当前第一通信节点的第二当前参数值；根据第二当前参数值对当前第一通信节点进行重选。
术语用户设备涵盖任何适合类型的无线用户设备，例如移动电话、便携数 据处理装置、便携网络浏览器或车载移动台。
一般来说，本申请的多种实施例可以在硬件或专用电路、软件、逻辑或其任何组合中实现。例如，一些方面可以被实现在硬件中，而其它方面可以被实现在可以被控制器、微处理器或其它计算装置执行的固件或软件中，尽管本申请不限于此。
本申请的实施例可以通过移动装置的数据处理器执行计算机程序指令来实现，例如在处理器实体中，或者通过硬件，或者通过软件和硬件的组合。计算机程序指令可以是汇编指令、指令集架构(Instruction Set Architecture，ISA)指令、机器指令、机器相关指令、微代码、固件指令、状态设置数据、或者以一种或多种编程语言的任意组合编写的源代码或目标代码。
本申请附图中的任何逻辑流程的框图可以表示程序步骤，或者可以表示相互连接的逻辑电路、模块和功能，或者可以表示程序步骤与逻辑电路、模块和功能的组合。计算机程序可以存储在存储器上。存储器可以具有任何适合于本地技术环境的类型并且可以使用任何适合的数据存储技术实现，例如但不限于只读存储器(Read-Only Memory，ROM)、随机访问存储器(Random Access Memory，RAM)、光存储器装置和系统(数码多功能光碟(Digital Video Disc，DVD)或光盘(Compact Disk，CD))等。计算机可读介质可以包括非瞬时性存储介质。数据处理器可以是任何适合于本地技术环境的类型，例如但不限于通用计算机、专用计算机、微处理器、数字信号处理器(Digital Signal Processing，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、可编程逻辑器件(Field-Programmable Gate Array，FPGA)以及基于多核处理器架构的处理器。

Claims (31)

  1. 一种启动方法，应用于第一通信节点，所述第一通信节点处于连接态或空闲态或非活跃态，包括：
    接收第二通信节点发送的中继功能配置信息；
    根据所述中继功能配置信息和第一当前参数值的比较结果，启动所述比较结果对应的中继功能，所述第一当前参数值包括：测量值、业务优先级。
  2. 根据权利要求1所述的方法，其中，所述中继功能配置信息包括下述信息中的至少之一：用户设备UE到网络的中继功能配置信息；UE到UE的中继功能配置信息。
  3. 根据权利要求2所述的方法，还包括：
    在所述第一通信节点处于空闲态或非活跃态进行小区选择的情况下，选择支持中继功能的所述第二通信节点。
  4. 根据权利要求3所述的方法，其中，所述选择支持中继功能的所述第二通信节点，包括：
    所述第一通信节点通过以下方式中的至少之一确定所述第二通信节点支持UE到网络的中继功能：
    在所述第二通信节点的覆盖范围内接收到所述UE到网络的中继功能配置信息，所述配置信息被包含在车联网V2X的系统消息块SIB消息中或独立的SIB消息中；
    在所述第二通信节点的覆盖范围内接收到SIB1、SIB2或SIB4中指示的服务小区支持UE到网络的中继功能的指示信息；
    在所述第二通信节点的覆盖范围内接收到专用于UE到网络的中继功能的物理随机接入信道PRACH资源；
    在所述第二通信节点的覆盖范围内接收到专用于UE到网络的中继功能的访问类别和访问标识。
  5. 根据权利要求4所述的方法，其中，所述UE到网络的中继功能配置信息与所述UE到UE的中继功能配置信息合并在一个SIB消息中。
  6. 根据权利要求3所述的方法，其中，所述选择支持中继功能的所述第二通信节点，包括：
    所述第一通信节点通过以下方式中的至少之一确定所述第二通信节点支持UE到UE的中继功能：
    在所述第二通信节点的覆盖范围内接收到所述UE到UE的中继功能配置信 息，所述配置信息被包含在V2X的SIB消息中或UE到网络的中继功能的SIB消息中或独立的SIB消息中；
    在所述第二通信节点的覆盖范围内接收到SIB1、SIB2或SIB4中指示的服务小区支持UE到UE的中继功能的指示信息；
    在所述第二通信节点的覆盖范围内接收到专用于UE到UE的中继功能的PRACH资源；
    在所述第二通信节点的覆盖范围内接收到专用于UE到UE的中继功能的访问类别和访问标识。
  7. 根据权利要求6所述的方法，其中，所述UE到UE的中继功能配置信息与所述UE到网络的中继功能配置信息合并在一个SIB消息中。
  8. 根据权利要求5或7所述的方法，还包括：
    根据所述配置信息的被包含位置选择支持中继功能的频点。
  9. 根据权利要求8所述的方法，其中，在所述配置信息为所述UE到网络的中继功能配置信息的情况下，所述根据所述配置信息的被包含位置选择支持中继功能的频点，包括下述之一：
    在所述UE到网络的中继功能配置信息被包含在独立的SIB消息中的情况下，优先选择支持UE到网络的中继功能的频点；
    在所述UE到网络的中继功能配置信息被包含在V2X的SIB消息中的情况下，优先选择支持UE到网络的中继功能，且支持新空口NR V2X的频点。
  10. 根据权利要求8所述的方法，其中，在所述配置信息为所述UE到UE的中继功能配置信息的情况下，所述根据所述配置信息的被包含位置选择支持中继功能的频点，包括下述之一：
    在所述UE到UE的中继功能配置信息被包含在独立的SIB消息中的情况下，优先选择支持UE到UE的中继功能的频点；
    在所述UE到UE的中继功能配置信息被包含在V2X的SIB消息的情况下，优先选择支持UE到UE的中继功能，且支持NR V2X的频点；
    在所述UE到UE的中继功能配置信息被包含在UE到网络的中继功能的SIB消息中的情况下，优先选择支持UE到UE的中继功能，且支持UE到网络的中继功能的频点；
    在所述UE到UE的中继功能配置信息被包含在UE到网络的中继功能的SIB消息和V2X的SIB消息中的情况下，优先选择支持UE到UE的中继功能，支持UE到网络的中继功能，且支持NR V2X的频点。
  11. 根据权利要求2所述的方法，其中，所述UE到网络的中继功能配置信息，至少包括下述之一：
    Uu接口上的参考信号接收功率RSRP门限值；PC5接口上的RSRP门限值；Uu接口上的业务优先级门限值；PC5接口上的业务优先级门限值；资源池忙闲程度门限值；绝对速度门限值；所述Uu接口为所述第一通信节点和所述第二通信节点之间的接口。
  12. 根据权利要求11所述的方法，其中，所述根据所述中继功能配置信息和第一当前参数值的比较结果，启动所述比较结果对应的中继功能，至少包括下述之一：
    在以下至少之一的情况下，启动UE到网络的中继功能：Uu接口上的RSRP测量值小于或等于Uu接口上的RSRP最大门限减迟滞值，Uu接口上的RSRP测量值大于或等于Uu接口上的RSRP最小门限加迟滞值；
    在PC5接口上的RSRP测量值小于或等于PC5接口上的RSRP最大门限值，且大于或等于PC5接口上的RSRP最小门限值的情况下，启动UE到网络的中继功能；
    在Uu接口上所有业务优先级数值大于或小于所述Uu接口上的业务优先级门限值的情况下，启动UE到网络的中继功能；
    在PC5接口上所有非中继业务优先级数值大于或小于所述PC5接口上的业务优先级门限值的情况下，启动UE到网络的中继功能；
    在资源池忙闲程度测量值低于或高于所述资源池忙闲程度门限值的情况下，启动UE到网络的中继功能；
    在所述第一通信节点的行驶速度小于或大于所述绝对速度门限值的情况下，启动UE到网络的中继功能。
  13. 根据权利要求2所述的方法，其中，所述UE到UE的中继功能配置信息，至少包括下述之一：
    Uu接口上的RSRP门限值；PC5接口上的RSRP门限值；Uu接口上的业务优先级门限值；PC5接口上的业务优先级门限值；资源池忙闲程度门限值；绝对速度门限值。
  14. 根据权利要求13所述的方法，其中，所述根据所述中继功能配置信息和第一当前参数值的比较结果，启动所述比较结果对应的中继功能，至少包括下述之一：
    在以下至少之一的情况下，启动UE到UE的中继功能：Uu接口上的RSRP 测量值小于或等于Uu接口上的RSRP最大门限减迟滞值，Uu接口上的RSRP测量值大于或等于Uu接口上的RSRP最小门限加迟滞值；
    在PC5接口上的RSRP测量值小于或等于PC5接口上的RSRP最大门限值，且大于或等于PC5接口上的RSRP最小门限值的情况下，启动UE到UE的中继功能；
    在Uu接口上所有业务优先级数值大于所述Uu接口上的业务优先级门限值的情况下，启动UE到UE的中继功能；
    在PC5接口上所有非中继业务优先级数值大于所述PC5接口上的业务优先级门限值的情况下，启动UE到UE的中继功能；
    在资源池忙闲程度测量值低于所述资源池忙闲程度门限值的情况下，启动UE到UE的中继功能；
    在第一通信节点的行驶速度小于所述绝对速度门限值的情况下，启动UE到UE的中继功能。
  15. 根据权利要求1所述的方法，其中，所述第一通信节点满足预配置或所述第二通信节点配置的中继UE选择准则信息。
  16. 根据权利要求15所述的方法，还包括：
    通过发现消息或者直接通信请求消息向第三通信节点广播所述中继UE选择准则信息。
  17. 根据权利要求15所述的方法，其中，在所述第一通信节点支持UE到网络的中继功能的情况下，所述中继UE选择准则信息，包括下述之一：PC5接口上的RSRP测量值大于RSRP门限值；Uu接口上的业务优先级为最高业务优先级；PC5接口上的业务优先级为最高优先级；同步小区指示SCI信息中的域地址指示信息；资源调度模式为预先配置模式；Uu无线接入技术RAT指示信息；新无线接入小区全局标识NCGI信息；中继优先级指示信息。
  18. 根据权利要求15所述的方法，其中，在所述第一通信节点支持UE到UE的中继功能的情况下，所述中继UE选择准则信息，包括下述之一：PC5接口上的RSRP测量值大于RSRP门限值；所述第一通信节点与所述第三通信节点之间的RSRP测量值最大；Uu接口上的业务优先级为最高优先级；PC5接口上的业务优先级为最高优先级；SCI信息中的域地址指示信息；资源调度模式为预先配置模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
  19. 一种启动方法，应用于第二通信节点，包括：
    为第一通信节点配置中继功能配置信息；
    将所述中继功能配置信息发送至所述第一通信节点；所述中继功能配置信息用于触发所述第一通信节点启动中继业务传输功能。
  20. 根据权利要求19所述的方法，还包括：
    为第三通信节点配置中继用户设备UE选择准则信息。
  21. 一种重选方法，应用于第三通信节点，包括：
    检测当前处于通信中的第一通信节点的第二当前参数值；
    根据所述第二当前参数值对所述第一通信节点进行重选。
  22. 根据权利要求21所述的方法，其中，在所述第一通信节点接入网络的情况下，所述第二当前参数值，至少包括下述之一：Uu接口上的参考信号接收功率RSRP测量值小于Uu接口上的RSRP门限值；电量小于预设电量门限值；所述第一通信节点和所述第三通信节点之间的PC5接口上的RSRP测量值小于PC5接口上的RSRP门限值；Uu接口上的业务优先级大于Uu接口上的业务优先级门限值；PC5接口上的业务优先级大于PC5接口上的业务优先级门限值。
  23. 根据权利要求21所述的方法，其中，在第一通信节点接入用户设备UE的情况下，所述第二当前参数值，至少包括下述之一：Uu接口上的RSRP测量值小于Uu接口上的RSRP门限值；电量小于预设电量门限值；所述第一通信节点和所述第三通信节点之间的PC5接口上的RSRP测量值小于PC5接口上的RSRP门限值；Uu接口上的业务优先级大于Uu接口上的业务优先级门限值；PC5接口上的业务优先级大于PC5接口上的业务优先级门限值；所述第一通信节点和所述第三通信节点之间的RSRP测量值小于PC5接口上的RSRP门限值；Uu无线接入技术RAT指示信息；新无线接入小区全局标识NCGI信息；中继优先级指示信息。
  24. 根据权利要求21所述的方法，还包括：
    检测除当前通信中的所述第一通信节点之外的第一通信节点发送的发现消息、连接建立请求消息或连接建立响应消息；
    根据所述发现消息、所述连接建立请求消息或所述连接建立响应消息中携带的第一预设消息对当前通信中的所述第一通信节点进行重选。
  25. 根据权利要求24所述的方法，其中，在所述第一通信节点接入网络的情况下，所述第一预设消息，至少包括下述之一：Uu接口上的业务优先级小于当前通信中的所述第一通信节点的业务优先级；PC5接口上的业务优先级小于当前通信中的所述第一通信节点的业务优先级；RSRP测量值大于当前通信中的所述第一通信节点之间的RSRP测量值；同步小区指示SCI消息中zone标识ID 信息指示为距离最近的节点；资源调度模式为优先模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
  26. 根据权利要求24所述的方法，其中，在所述第一通信节点接入UE的情况下，所述第一预设消息，至少包括下述之一：Uu接口上的业务优先级小于当前通信中的所述第一通信节点的业务优先级；PC5接口上的业务优先级小于当前通信中的所述第一通信节点的业务优先级；RSRP测量值大于当前通信中的所述第一通信节点之间的RSRP测量值；SCI消息中的zone ID信息指示为距离最近的节点；资源调度模式为优先模式；Uu RAT指示信息；NCGI信息；中继优先级指示信息。
  27. 一种启动装置，应用于第一通信节点，包括：
    接收器，配置为接收第二通信节点发送的中继功能配置信息；
    启动器，配置为根据所述中继功能配置信息和第一当前参数值的比较结果，启动所述比较结果对应的中继业务传输功能，所述第一当前参数值包括：测量值、业务优先级。
  28. 一种启动装置，应用于第二通信节点，包括：
    第一配置模块，配置为为第一通信节点配置中继功能配置信息；
    发送器，配置为将所述中继功能配置信息发送至所述第一通信节点；所述中继功能配置信息用于触发所述第一通信节点启动中继业务传输功能。
  29. 一种重选装置，应用于第三通信节点，包括：
    第一检测器，配置为检测当前处于通信中的第一通信节点的第二当前参数值；
    第一重选器，配置为根据所述第二当前参数值对所述第一通信节点进行重选。
  30. 一种设备，包括：通信模块，存储器，以及至少一个处理器；
    所述通信模块，配置为在第一通信节点、第二通信节点和第三通信节点之间进行通信交互；
    所述存储器，配置为存储至少一个程序；
    当所述至少一个程序被所述至少一个处理器执行，使得所述至少一个处理器实现如权利要求1-26中任一项所述的方法。
  31. 一种存储介质，存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1-26任一项所述的方法。
PCT/CN2021/086085 2020-04-09 2021-04-09 启动方法及装置、重选方法及装置、设备、存储介质 WO2021204232A1 (zh)

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