WO2023159492A1 - 无线通信的方法和终端设备 - Google Patents

无线通信的方法和终端设备 Download PDF

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Publication number
WO2023159492A1
WO2023159492A1 PCT/CN2022/078021 CN2022078021W WO2023159492A1 WO 2023159492 A1 WO2023159492 A1 WO 2023159492A1 CN 2022078021 W CN2022078021 W CN 2022078021W WO 2023159492 A1 WO2023159492 A1 WO 2023159492A1
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WIPO (PCT)
Prior art keywords
connection
terminal device
connections
network device
network
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PCT/CN2022/078021
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English (en)
French (fr)
Inventor
卢前溪
冷冰雪
张博源
Original Assignee
Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2022/078021 priority Critical patent/WO2023159492A1/zh
Publication of WO2023159492A1 publication Critical patent/WO2023159492A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition

Definitions

  • the embodiments of the present application relate to the communication field, and in particular to a wireless communication method and a terminal device.
  • the remote terminal can be connected to the network through multiple paths, for example, the remote terminal can be directly connected to the network and connected to the network through a relay terminal.
  • RLF Radio Link Failure
  • the present application provides a wireless communication method and a terminal device.
  • the terminal device can perform operations related to connection restoration and/or operations related to connection switching, which is beneficial to ensure that the terminal device and network device transmission between network devices.
  • a wireless communication method is provided, which is applied to a terminal device, and there are multiple connections between the terminal device and a network device.
  • the method includes: performing a wireless communication on the first connection among the multiple connections.
  • link failure RLF operations related to connection recovery and/or operations related to connection switching are performed.
  • a second aspect provides a terminal device configured to execute the method in the foregoing first aspect or any possible implementation manner of the first aspect.
  • the terminal device includes a unit configured to execute the method in the foregoing first aspect or any possible implementation manner of the first aspect.
  • a terminal device in a third aspect, includes: a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the above first aspect or its various implementations.
  • a chip is provided for implementing the method in the above first aspect or various implementation manners thereof.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the method in the above first aspect or its various implementations.
  • a computer-readable storage medium for storing a computer program, and the computer program causes a computer to execute the method in the above-mentioned first aspect or each implementation manner thereof.
  • a computer program product including computer program instructions, where the computer program instructions cause a computer to execute the method in the above first aspect or various implementation manners thereof.
  • a computer program which, when running on a computer, causes the computer to execute the method in the above first aspect or various implementations thereof.
  • the terminal device can perform connection restoration related operations and/or connection switching related operations to restore the RLF connection Alternatively, switching the transmission between the terminal device and the network device to a connection without RLF is beneficial to ensure the normal execution of the transmission between the terminal device and the network device.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • Fig. 2 is a schematic diagram of a transmission protocol stack in a 5G system.
  • Fig. 3 is a schematic diagram of connection between a terminal device and a network device.
  • Fig. 4 is a schematic diagram of a wireless communication method provided according to an embodiment of the present application.
  • Fig. 5 is a schematic diagram of RLF occurring in a Uu connection between a terminal device and a network device.
  • FIG. 6 is a schematic diagram of RLF occurring in a relay connection between a terminal device and a network device.
  • Fig. 7 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.
  • Fig. 8 is a schematic block diagram of a communication device provided according to an embodiment of the present application.
  • Fig. 9 is a schematic block diagram of a chip provided according to an embodiment of the present application.
  • the technical solution of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.
  • GSM Global System of Mobile
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V Vehicle to Vehicle
  • V2X Vehicle to everything
  • the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, may also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and may also be applied to an independent (Standalone, SA) deployment Web scene.
  • Carrier Aggregation, CA Carrier Aggregation
  • DC Dual Connectivity
  • SA independent deployment Web scene
  • the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered as non-shared spectrum.
  • the embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • user equipment User Equipment, UE
  • access terminal user unit
  • user station mobile station
  • mobile station mobile station
  • remote station remote terminal
  • mobile device user terminal
  • terminal wireless communication device
  • wireless communication device user agent or user device
  • the terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.
  • PLMN Public Land Mobile Network
  • the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites) superior).
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • a virtual reality (Virtual Reality, VR) terminal device an augmented reality (Augmented Reality, AR) terminal Equipment
  • wireless terminal equipment in industrial control wireless terminal equipment in self driving
  • wireless terminal equipment in remote medical wireless terminal equipment in smart grid
  • wireless terminal equipment in transportation safety wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the network device may be a device for communicating with the mobile device, and the network device may be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA , or a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolutional Node B, eNB or eNodeB evolved base station
  • LTE Long Term Evolutional Node B, eNB or eNodeB
  • gNB network equipment in the network or the network equipment in the future evolved PLMN network or the network equipment in the NTN network, etc.
  • the network device may have a mobile feature, for example, the network device may be a mobile device.
  • the network equipment may be a satellite or a balloon station.
  • the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc.
  • the network device may also be a base station installed on land, water, and other locations.
  • the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, a cell corresponding to a base station), the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell), and the small cell here may include: a metro cell (Metro cell), a micro cell (Micro cell), a pico cell ( Pico cell), Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • the transmission resources for example, frequency domain resources, or spectrum resources
  • the cell may be a network device (
  • the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell)
  • the small cell here may include: a metro cell (Metro cell), a micro cell (Micro
  • the communication system 100 may include a network device 110, and the network device 110 may be a device for communicating with a terminal device 120 (or called a communication terminal, terminal).
  • the network device 110 can provide communication coverage for a specific geographical area, and can communicate with terminal devices located in the coverage area.
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This application The embodiment does not limit this.
  • the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.
  • a device with a communication function in the network/system in the embodiment of the present application may be referred to as a communication device.
  • the communication equipment may include a network equipment 110 and a terminal equipment 120 with communication functions.
  • the network equipment 110 and the terminal equipment 120 may be the specific equipment described above, and will not be repeated here.
  • the communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in this embodiment of the present application.
  • the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.
  • predefinition can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate related information in devices (for example, including terminal devices and network devices).
  • the implementation method is not limited.
  • pre-defined may refer to defined in the protocol.
  • the "protocol” may refer to a standard protocol in the communication field, for example, it may include the LTE protocol, the NR protocol, and related protocols applied in future communication systems, which is not limited in the present application.
  • a Layer 2-based UE-to-Network (UE-to-Network) relay (Relay) UE is introduced, and the UE-to-Network relay UE can directly connect to the network.
  • the remote terminal connects the UE to the access network (such as gNB) and the core network (Core Network, CN) (such as 5GC) through the UE-to-Network relay.
  • the access network such as gNB
  • the core network Core Network, CN
  • 5GC 5GC
  • FIG 2 shows a schematic diagram of the transmission protocol stack of the 5G system, specifically involving the remote UE (Remote UE), layer 2 UE-to-Network relay UE, gNB and 5GC.
  • the remote UE may include the following layers: Internet Protocol (Internet Protocol, IP), Uu-Service Data Adaptation Protocol (Service Data Adaptation Protocol, SDAP), Uu-Packet Data Convergence Protocol (Packet Data Convergence Protocol) , PDCP), PC5-Radio Link Control (Radio Link Control, RLC), PC5-Media Access Control (Media Access Control, MAC), PC5-Physics (Physics, PHY).
  • UE-to-Network relay UE may include the following layers: adaptation (Adaptation, ADAPT), PC5-RLC, PC5-MAC, PC5-PHY, Uu-RLC, Uu-MAC, Uu-PHY.
  • the gNB may include the following layers: Uu-SDAP, Uu-PDCP, ADAPT, Uu-RLC, Uu-MAC, Uu-PHY, N3 protocol stack.
  • 5GC can include the following layers: IP, N3 protocol stack.
  • the adaptation layer (ADAPT) of the relay UE is set above the control plane and user plane RLC layers of the Uu interface between the relay UE and the gNB.
  • Uu-SDAP, Uu-PDCP and radio resource control (Radio Resource Control, RRC) are terminated between the remote UE and gNB, and RLC, MAC and PHY are terminated in each link (including between the remote UE and the relay UE the link between the UE and the relay link between the UE and the gNB).
  • the link between the relay UE and the network may be called a Uu link, Uu path, and the direct link between the remote UE and the network may also be called a Uu link, Uu path, remote
  • the link between the terminal UE and the relay UE may be called a PC5 link, a PC5 path.
  • the adaptation layer of the relay UE supports uplink bearer mapping between the access PC5 channels, and is used to perform transmission on the Uu path between the relay UE and the network and access to the Uu channel.
  • uplink relay service different end-to-end bearers of the same remote UE and/or different remote UEs (for example, signaling radio bearers (Signaling radio bearers, SRB), data radio bearers (Data Radio Bearer, DRB) )) N:1 mapping and data multiplexing can be performed on one Uu channel.
  • the adaptation layer of the relay UE includes the identification information of the remote terminal of the uplink service to be relayed and the identification information of the radio bearer of the remote terminal, so that the gNB will associate the specific packet data convergence protocol with the radio bearer of the remote terminal (Packet Data Convergence Protocol, PDCP) entities received data packets are associated.
  • PDCP Packet Data Convergence Protocol
  • the adaptation layer of the relay UE can be used to support the downlink bearer mapping at the gNB to map the end-to-end radio bearers (such as SRB, DRB) of the remote terminal to the Uu channel through the Uu path between the relay UE and the network.
  • the adaptation layer of the relay UE can be used to support multiple end-to-end radio bearers (such as SRB, DRB) of the remote UE and/or different remote UEs and between Uu channels on the Uu path between the relay UE and the network Downlink N:1 bearer mapping and data multiplexing between them.
  • the adaptation layer of the relay UE includes identification information of the remote terminal of the downlink service to be relayed.
  • the identification information of the radio bearer of the remote terminal and the identification information of the remote terminal need to be put into the adaptation layer of the relay UE through the gNB, so that the relay UE can map the data packet received from the radio bearer of the remote terminal to the PC5 channel related to the radio bearer.
  • the remote UE may be connected to the network through multiple paths, for example, the multiple paths include a direct path between the remote UE and the network, and a relay path through which the relay UE is connected to the network.
  • the remote UE can be connected to the network device through the relay UE and directly connected to the network device through the Uu interface.
  • the remote UE and the relay UE are connected and communicated through the PC5 interface, and the relay UE is connected and communicated with the network device through the Uu interface.
  • the relay UEs are connected and communicated through the PC5 interface, and the last relay UE is connected and communicated with the network device through the Uu interface.
  • Radio Link Failure Radio Link Failure
  • FIG. 4 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application, and the method 200 may be executed by a terminal device in the communication system shown in FIG. 1 . Wherein, there are multiple connections between the terminal device and the network device.
  • the method 200 includes the following content:
  • the terminal device performs operations related to connection recovery and/or operations related to connection switching.
  • the operations related to connection restoration may be used to restore the first connection where the RLF occurs, or restore all connections between the terminal device and the network device.
  • the recovery here can be done through the RRC reconstruction process.
  • the operation related to connection switching may be used to switch the transmission between the terminal device and the network device to a connection without RLF.
  • the multiple connections include a direct connection between the terminal device and the network device, and a relay connection between the terminal device and the network device. That is, the terminal device may be directly connected to the network device, or may be connected to the network device through a relay terminal.
  • the embodiment of the present application does not limit the number of relay terminals between the terminal device and the network device.
  • the terminal device may be connected to the network device through one relay terminal, or may be Connect to network devices.
  • the relay terminal may be a layer 2 relay, or may also be a layer 3 relay, which is not limited in this application.
  • the terminal device may be connected to the network device through the relay UE-1, and may also be connected to the network device through the relay UE-2.
  • the relay connection between the terminal device and the network device may include a relay connection in which the terminal device is connected to the network device through the relay UE-1, and a relay connection in which the terminal device is connected to the network device through the relay UE-2.
  • the relay connection may include a PC5 connection between the terminal device and the relay terminal and a Uu connection between the relay terminal and the network device.
  • the direct connection may also be expressed as a direct link, a direct path, a Uu link, a Uu path, and the like.
  • the PC5 connection is called a PC5 link, or a PC5 path.
  • the first connection may include a direct connection between the terminal device and a network device. Recorded as case 1.
  • RLF occurs in the Uu connection between the terminal device and the network device, as shown in FIG. 5 .
  • the first connection may include a relay connection between the terminal device and a network device. Recorded as case 2.
  • the occurrence of RLF on the first connection may refer to the occurrence of RLF on the PC5 connection between the terminal device and the relay terminal, as shown in FIG. 6 .
  • the occurrence of RLF in the direct connection between the terminal device and the network device may refer to the occurrence of RLF in the Uu interface between the terminal device and the network device.
  • the RLF occurring on the relay connection between the terminal device and the network device may include RLF occurring on the PC5 interface between the terminal device and the relay terminal.
  • the trigger event of RLF occurring on the Uu connection includes at least one of the following:
  • the timer T310 on the primary cell (PCell) times out
  • the timer T312 on the primary cell times out
  • An integrity check failure indication (integrity check failure indication) of SRB1 or SRB2 is received.
  • the above trigger condition may exclude the failure of the integrity check detected in the RRC reestablishment message (RRCReestablishment).
  • the triggering event of RLF occurring on the PC5 connection includes at least one of the following:
  • the timer T400 for a specific destination expires
  • An integrity check failure indication of a sideline Packet Data Convergence Protocol PDCP entity associated with a sideline SL-SRB2 or SL-SRB3 for a particular destination is received.
  • the activation conditions of T300 include:
  • RRCSetupRequest Transmission of an RRC setup request (RRCSetupRequest) message.
  • the stop conditions of T300 include:
  • RRCSetup Receives an RRC setup (RRCSetup) message or an RRC rejection (RRCReject) message;
  • the activation conditions of T301 include:
  • the stop conditions of T301 include:
  • RRC Reestablishment RRCReestablishment
  • RRC Setup RRCSetup
  • the starting conditions of T304 include:
  • the stop conditions of T304 include:
  • the random access to the corresponding special cell (SpCell) is successfully completed, and for the timer T304 of the secondary cell group (Secondary Cell Group, SCG), the SCG is released.
  • SCG Secondary Cell Group
  • the RRC reconstruction process For the T304 corresponding to the MCG, after T304 times out, when switching from NR or within NR, start the RRC reconstruction process, and in the case of switching to NR, execute the radio access technology (Radio Access Technology, RAT) applicable to the source Operations defined in the specification. If a dual active protocol stack (DAPS) bearer is configured and no RLF occurs on the source PCell, start the failure notification process.
  • DAPS dual active protocol stack
  • the network synchronization reconfiguration failure is notified by starting the SCG failure notification process.
  • the activation conditions of T310 include:
  • a physical layer problem with the SpCell is detected, eg, N310 consecutive out-of-sync indications (OOS) indications are received from lower layers.
  • OOS out-of-sync indications
  • the stop conditions of T310 include:
  • conditional reconfiguration e.g. apply a stored RRCReconfiguration message containing reconfigurationWithSync to the cell group;
  • the starting condition of T311 includes: initiating an RRC connection reestablishment procedure.
  • the stop conditions of T311 include:
  • a suitable NR cell or a cell using another RAT is selected.
  • T312 is configured in the MCG-related configuration, and the start conditions of T312 include:
  • the measurement report corresponding to the measurement identity is triggered, wherein the measurement identity has been configured with T312, and use T312 (useT312) has been set to true.
  • T312 is configured in the SCG-related configuration, and useT312 is set to true, and the start conditions of T312 include:
  • the measurement report corresponding to the measurement identity is triggered, wherein the measurement identity has been configured with T312.
  • the stop conditions of T312 include:
  • conditional reconfiguration e.g. apply a stored RRCReconfiguration message containing reconfigurationWithSync to the cell group;
  • the activation conditions of T319 include:
  • the stop conditions of T319 include:
  • Receive RRC recovery (RRCResume), RRCSetup, RRC release (RRCRelease), including RRCRelease or RRCReject that suspends the configuration;
  • the starting conditions of T400 include:
  • the stop conditions of T400 include:
  • a side RRC reconfiguration failure (RRCReconfigurationFailureSidelink) message or a side RRC reconfiguration complete (RRCReconfigurationCompleteSidelink) message is received.
  • the performing operations related to connection restoration includes but is not limited to at least one of the following:
  • the performing operations related to connection switching includes at least one of the following:
  • the network device may determine that RLF occurs in the first connection.
  • the network device and the terminal device can switch the transmission to be performed to a connection without RLF, in other words, the network device and the terminal device have the same understanding of the connection used for subsequent transmission, and perform subsequent transmission through the connection without RLF , which is beneficial to ensure the transmission performance.
  • the switching the transmission between the terminal device and the network device to other connections in the plurality of connections except the first connection may include:
  • the terminal device sets carriers on connections other than the first connection among the multiple connections as primary carriers.
  • the terminal device sets the carrier on the connection without RLF as the main carrier, which helps to ensure reliable transmission of services between the terminal device and the network device, and helps to ensure the control and management of the terminal device by the network device.
  • the terminal device sets a carrier on a connection other than the first connection among the multiple connections or a cell corresponding to the carrier as the PCell.
  • the terminal device uses the carrier on the connection where RLF does not occur or the cell corresponding to the carrier as the PCell, which is conducive to ensuring the reliable transmission of services between the terminal device and the network device, and is conducive to ensuring the control and management of the terminal device by the network device .
  • the first carrier on the other connection is set as the primary carrier
  • the first cell corresponding to the first carrier is set as the PCell
  • the configuration information of the primary carrier or the PCell includes the configuration information of the terminal device from the second Tracking Area Code (Tracking Area Code, TAC) and/or Public Land Mobile Network (Public Land Mobile Network, PLMN) acquired by a carrier or the first cell.
  • TAC Tracking Area Code
  • PLMN Public Land Mobile Network
  • the first carrier is a carrier without RLF
  • the first cell is a cell without RLF
  • the main carrier is configured on the carrier without RLF
  • the PCell is configured on the carrier without RLF or the cell corresponding to the carrier
  • the operation related to connection switching is performed when a first condition is met, and the first condition includes at least one of the following:
  • the RLC channel for SRB and/or DRB is configured on the other connection
  • At least one of the home cell, primary cell, TAC, and PLMN of the terminal device is obtained from the network device through the other connection;
  • the occurrence of the RLF on the first connection is triggered by a specific trigger event.
  • the first connection is a direct connection
  • the specific trigger event may include the expiration of the timer T310 or T312 on the PCell.
  • the first connection is a relay connection
  • the specific triggering event may include: determining the maximum number of retransmissions that have reached a specific destination (specific destination) according to an indication of the side RLC entity, or the maximum number of retransmissions for a specific destination Timer T400 times out.
  • Embodiment 1 RLF occurs in the Uu connection between the terminal device and the network device.
  • the operations related to connection recovery include but are not limited to at least one of the following:
  • the performing operations related to connection switching includes at least one of the following:
  • the carrier on the relay connection between the terminal device and the network device or the cell corresponding to the carrier is set as the primary cell.
  • the switching the transmission between the terminal device and the network device to the relay connection between the terminal device and the network device may include:
  • the first carrier on the relay connection is set as the primary carrier, or the first cell corresponding to the first carrier on the relay connection is set as a PCell, the configuration information of the primary carrier or PCell It includes the TAC and/or PLMN acquired by the terminal device from the first carrier or the first cell.
  • the operation related to connection switching is performed when a first condition is met, and the first condition includes at least one of the following:
  • An RLC channel for SRB and/or DRB is configured on the relay connection
  • At least one of the terminal device's home cell, primary cell, TAC, and PLMN is obtained from the network device through the relay connection;
  • the occurrence of RLF in the Uu connection is triggered by a specific trigger event.
  • none of the carriers on the Uu connection is a main carrier, or in other words, none of the cells corresponding to the carriers on the Uu connection is a PCell.
  • at least one carrier on the Uu connection is configured with a reference signal for radio link monitoring (radio link monitoring, RLM) and/or for sending a first Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH) public search space, wherein the first PDCCH is scrambled based on a random access radio network temporary identifier (Random Access Radio Network Temporary Identity, RA-RNTI), and the first PDCCH is used to schedule a random access response (Random Access Response, RAR).
  • RLM radio link monitoring
  • PDCCH Physical Downlink Control Channel
  • RA-RNTI random access radio network temporary identifier
  • RAR Random Access Response
  • the reference signal for RLM may be used to trigger the timer T310.
  • the RAR is used to report a random access problem indication.
  • Embodiment 2 RLF occurs in the relay connection between the terminal device and the network device, for example, the RLF occurs in the PC5 connection between the terminal device and the relay terminal.
  • the operations related to connection recovery include but are not limited to at least one of the following:
  • Release the relay connection between the terminal device and the network device for example, release the PC5 connection between the terminal device and the relay terminal.
  • the performing operations related to connection switching includes at least one of the following:
  • the switching the transmission between the terminal device and the network device to the Uu connection between the terminal device and the network device may include:
  • the second carrier on the Uu connection is set as the main carrier, or the second cell corresponding to the second carrier is set as a PCell, and the configuration information of the main carrier or PCell includes the TAC and/or PLMN acquired by the second carrier or the second cell.
  • the operation related to connection switching is performed when a first condition is met, and the first condition includes at least one of the following:
  • An RLC channel for SRB and/or DRB is configured on the Uu connection between the terminal device and the network device;
  • At least one of the terminal device's home cell, primary cell, TAC, and PLMN is obtained from the network device through a Uu connection between the terminal device and the network device;
  • the occurrence of RLF in the relay connection between the terminal device and the network device is triggered by a specific trigger event.
  • the terminal device may perform operations related to connection recovery and/or operations related to connection switching to Restoring the connection with RLF or switching the transmission between the terminal device and the network device to the connection without RLF is beneficial to ensure the normal execution of the transmission between the terminal device and the network device.
  • Fig. 7 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application.
  • the terminal device 400 includes:
  • the processing unit 410 is configured to perform operations related to connection restoration and/or operations related to connection switching in a case where a radio link failure RLF occurs in the first connection among the multiple connections between the terminal device and the network device.
  • the performing operations related to connection recovery includes at least one of the following:
  • the performing operations related to connection switching includes at least one of the following:
  • switching the transmission between the terminal device and the network device to other connections in the plurality of connections except the first connection includes:
  • the first carrier on the other connection is set as the main carrier, or the first cell corresponding to the first carrier on the other connection is set as the main cell, and the configuration information of the main carrier It includes a tracking area code TAC and/or a public land mobile network PLMN acquired by the terminal device from the first carrier or the first cell.
  • the operation related to connection switching is performed when a first condition is met, and the first condition includes at least one of the following:
  • a radio link control RLC channel for SRB and/or DRB is configured on the other connection;
  • At least one of the home cell, primary cell, TAC, and PLMN of the terminal device is obtained from the network device through the other connection;
  • the occurrence of the RLF on the first connection is triggered by a specific trigger event.
  • the first connection is a direct connection between the terminal device and the network device
  • the other connections include a relay connection between the terminal device and the network device.
  • At least one carrier on the first connection is configured with a reference signal for radio link monitoring RLM and/or a common search space for sending a first physical downlink control channel PDCCH, wherein the second A PDCCH is scrambled based on a random access radio network temporary identifier RA-RNTI, and the first PDCCH is used for scheduling a random access response RAR.
  • none of the carriers on the first connection is a primary carrier.
  • the triggering event of RLF occurring on the first connection includes at least one of the following:
  • the timer T310 on the primary cell times out
  • the timer T312 on the primary cell times out
  • the first connection is a relay connection between the terminal device and the network device
  • the other connections include a direct connection between the terminal device and the network device.
  • the triggering event of RLF occurring on the first connection includes at least one of the following:
  • the timer T400 for a specific destination expires
  • An integrity check failure indication is received for a sideline Packet Data Convergence Protocol PDCP entity associated with a sideline SL-SRB2 or SL-SRB3 for a particular destination.
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip.
  • the aforementioned processing unit may be one or more processors.
  • terminal device 400 may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 400 are to realize the For the sake of brevity, the corresponding process of the terminal device in the shown method 200 will not be repeated here.
  • the terminal device may perform operations related to connection recovery and/or operations related to connection switching to Restoring the connection with RLF or switching the transmission between the terminal device and the network device to the connection without RLF is beneficial to ensure the normal execution of the transmission between the terminal device and the network device.
  • FIG. 8 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application.
  • the communication device 600 shown in FIG. 8 includes a processor 610, and the processor 610 can invoke and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the communication device 600 may further include a memory 620 .
  • the processor 610 can invoke and run a computer program from the memory 620, so as to implement the method in the embodiment of the present application.
  • the memory 620 may be an independent device independent of the processor 610 , or may be integrated in the processor 610 .
  • the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or receive other Information or data sent by the device.
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include antennas, and the number of antennas may be one or more.
  • the communication device 600 may specifically be the network device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here. .
  • the communication device 600 may specifically be the mobile terminal/terminal device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, for the sake of brevity , which will not be repeated here.
  • FIG. 9 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 700 shown in FIG. 9 includes a processor 710, and the processor 710 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the chip 700 may further include a memory 720 .
  • the processor 710 can invoke and run a computer program from the memory 720, so as to implement the method in the embodiment of the present application.
  • the memory 720 may be an independent device independent of the processor 710 , or may be integrated in the processor 710 .
  • the chip 700 may also include an input interface 730 .
  • the processor 710 may control the input interface 730 to communicate with other devices or chips, specifically, may obtain information or data sent by other devices or chips.
  • the chip 700 may also include an output interface 740 .
  • the processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application.
  • the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application.
  • the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application.
  • the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application.
  • the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.
  • the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash.
  • the volatile memory can be Random Access Memory (RAM), which acts as external cache memory.
  • RAM Static Random Access Memory
  • SRAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM, DDR SDRAM enhanced synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM synchronous connection dynamic random access memory
  • Synchlink DRAM, SLDRAM Direct Memory Bus Random Access Memory
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the methods of the embodiments of the present application.
  • the computer program enables the computer to execute the corresponding processes implemented by the network device in the methods of the embodiments of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application , for the sake of brevity, it is not repeated here.
  • the embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the Let me repeat for the sake of brevity, the Let me repeat.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods of the embodiments of the present application, For the sake of brevity, details are not repeated here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program executes the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program executes the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program executes each method in the embodiment of the present application to be implemented by the mobile terminal/terminal device
  • the corresponding process will not be repeated here.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

Abstract

一种无线通信的方法和终端设备，所述方法应用于终端设备，其中，所述终端设备和网络设备之间具有多条连接，所述方法包括：在所述多条连接中的第一连接发生无线链路失败RLF的情况下，执行连接恢复相关操作和/或连接切换相关操作。

Description

无线通信的方法和终端设备 技术领域
本申请实施例涉及通信领域，具体涉及一种无线通信的方法和终端设备。
背景技术
在一些场景中，远端终端可以通过多条路径连接到网络，例如，远端终端可以直连到网络以及通过中继终端连接到网络。当该多条路径中的某条路径发生无线链路失败(Radio Link Failure，RLF)时，远端终端如何进行处理以保证远端终端和网络之间的传输是一项亟需解决的问题。
发明内容
本申请提供了一种无线通信的方法和终端设备，在终端设备和网络设备之间的连接发生RLF时，终端设备可以执行连接恢复相关操作和/或连接切换相关操作，有利于保证终端设备和网络设备之间的传输。
第一方面，提供了一种无线通信的方法，应用于终端设备，所述终端设备和网络设备之间具有多条连接，所述方法包括：在所述多条连接中的第一连接发生无线链路失败RLF的情况下，执行连接恢复相关操作和/或连接切换相关操作。
第二方面，提供了一种终端设备，用于执行上述第一方面或第一方面的任意可能的实现方式中的方法。具体地，该终端设备包括用于执行上述第一方面或第一方面的任一可能的实现方式中的方法的单元。
第三方面，提供了一种终端设备，该终端设备包括：包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第一方面或其各实现方式中的方法。
第四方面，提供了一种芯片，用于实现上述第一方面或其各实现方式中的方法。
具体地，该芯片包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有该芯片的设备执行如上述第一方面或其各实现方式中的方法。
第五方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序使得计算机执行上述第一方面或其各实现方式中的方法。
第六方面，提供了一种计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行上述第一方面或其各实现方式中的方法。
第七方面，提供了一种计算机程序，当其在计算机上运行时，使得计算机执行上述第一方面或其各实现方式中的方法。
基于上述技术方案，在终端设备和网络设备之间的多条连接中的第一连接发生RLF的情况下，终端设备可以执行连接恢复相关操作和/或连接切换相关操作，以恢复发生RLF的连接或将终端设备和网络设备之间的传输切换至未发生RLF的连接，有利于保证终端设备和网络设备之间的传输的正常执行。
附图说明
图1是本申请实施例提供的一种通信系统架构的示意性图。
图2是5G系统中的传输协议栈示意图。
图3是终端设备和网络设备之间的连接示意图。
图4是根据本申请实施例提供的一种无线通信的方法的示意性图。
图5是终端设备和网络设备之间的Uu连接发生RLF的示意图。
图6是终端设备和网络设备之间的中继连接发生RLF的示意图。
图7是根据本申请实施例提供的一种终端设备的示意性框图。
图8是根据本申请实施例提供的一种通信设备的示意性框图。
图9是根据本申请实施例提供的一种芯片的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。针对本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、新无线(New Radio，NR)系统、NR系统的演进系统、非授权频谱上的LTE(LTE-based access to unlicensed spectrum，LTE-U)系统、非授权频谱上的NR(NR-based access to unlicensed spectrum，NR-U)系统、非地面通信网络(Non-Terrestrial Networks，NTN)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、无线局域网(Wireless Local Area Networks，WLAN)、无线保真(Wireless Fidelity，WiFi)、第五代通信(5th-Generation，5G)系统或其他通信系统等。
通常来说，传统的通信系统支持的连接数有限，也易于实现，然而，随着通信技术的发展，移动通信系统将不仅支持传统的通信，还将支持例如，设备到设备(Device to Device，D2D)通信，机器到机器(Machine to Machine，M2M)通信，机器类型通信(Machine Type Communication，MTC)，车辆间(Vehicle to Vehicle，V2V)通信，或车联网(Vehicle to everything，V2X)通信等，本申请实施例也可以应用于这些通信系统。
可选地，本申请实施例中的通信系统可以应用于载波聚合(Carrier Aggregation，CA)场景，也可以应用于双连接(Dual Connectivity，DC)场景，还可以应用于独立(Standalone，SA)布网场景。
可选地，本申请实施例中的通信系统可以应用于非授权频谱，其中，非授权频谱也可以认为是共享频谱；或者，本申请实施例中的通信系统也可以应用于授权频谱，其中，授权频谱也可以认为是非共享频谱。
本申请实施例结合网络设备和终端设备描述了各个实施例，其中，终端设备也可以称为用户设备(User Equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置等。
终端设备可以是WLAN中的站点(STATION，ST)，可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、下一代通信系统例如NR网络中的终端设备，或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)网络中的终端设备等。
在本申请实施例中，终端设备可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。
在本申请实施例中，终端设备可以是手机(Mobile Phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self  driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备或智慧家庭(smart home)中的无线终端设备等。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
在本申请实施例中，网络设备可以是用于与移动设备通信的设备，网络设备可以是WLAN中的接入点(Access Point，AP)，GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA中的基站(NodeB，NB)，还可以是LTE中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者中继站或接入点，或者车载设备、可穿戴设备以及NR网络中的网络设备(gNB)或者未来演进的PLMN网络中的网络设备或者NTN网络中的网络设备等。
作为示例而非限定，在本申请实施例中，网络设备可以具有移动特性，例如网络设备可以为移动的设备。可选地，网络设备可以为卫星、气球站。例如，卫星可以为低地球轨道(low earth orbit，LEO)卫星、中地球轨道(medium earth orbit，MEO)卫星、地球同步轨道(geostationary earth orbit，GEO)卫星、高椭圆轨道(High Elliptical Orbit，HEO)卫星等。可选地，网络设备还可以为设置在陆地、水域等位置的基站。
在本申请实施例中，网络设备可以为小区提供服务，终端设备通过该小区使用的传输资源(例如，频域资源，或者说，频谱资源)与网络设备进行通信，该小区可以是网络设备(例如基站)对应的小区，小区可以属于宏基站，也可以属于小小区(Small cell)对应的基站，这里的小小区可以包括：城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
示例性的，本申请实施例应用的通信系统100如图1所示。该通信系统100可以包括网络设备110，网络设备110可以是与终端设备120(或称为通信终端、终端)通信的设备。网络设备110可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端设备进行通信。
图1示例性地示出了一个网络设备和两个终端设备，可选地，该通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备，本申请实施例对此不做限定。
可选地，该通信系统100还可以包括网络控制器、移动管理实体等其他网络实体，本申请实施例对此不作限定。
应理解，本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图1示出的通信系统100为例，通信设备可包括具有通信功能的网络设备110和终端设备120，网络设备110和终端设备120可以为上文所述的具体设备，此处不再赘述；通信设备还可包括通信系统100中的其他设备，例如网络控制器、移动管理实体等其他网络实体，本申请实施例中对此不做限定。
应理解，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
应理解，在本申请的实施例中提到的“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。
在本申请实施例的描述中，术语“对应”可表示两者之间具有直接对应或间接对应的关系，也可以表示两者之间具有关联关系，也可以是指示与被指示、配置与被配置等关系。
本申请实施例中，"预定义"可以通过在设备(例如，包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定。比如预定义可以是指协议中定义的。
本申请实施例中，所述"协议"可以指通信领域的标准协议，例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议，本申请对此不做限定。
在一些场景中，引入了基于层2的终端至网络(UE-to-Network)中继(Relay)UE，该UE-to-Network中继UE可以直接连接网络。具体的，远端终端通过UE-to-Network中继UE连接到接入网(例如gNB)和核心网(Core Network，CN)(例如5GC)。
图2示出了5G系统的传输协议栈的示意性图，具体涉及远端UE(Remote UE)、层2 UE-to-Network中继UE、gNB和5GC。如图2所示，远端UE可以包括以下层：网络协议(Internet Protocol，IP)、Uu-服务数据适配协议(Service Data Adaptation Protocol，SDAP)、Uu-分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)、PC5-无线链路控制(Radio Link Control，RLC)、PC5-媒体接入控制(Media Access Control，MAC)、PC5-物理(Physics，PHY)。UE-to-Network中继UE可以包括以下层：适配(Adaptation，ADAPT)、PC5-RLC、PC5-MAC、PC5-PHY、Uu-RLC、Uu-MAC、Uu-PHY。gNB可以包括以下层：Uu-SDAP、Uu-PDCP、ADAPT、Uu-RLC、Uu-MAC、Uu-PHY、N3协议栈。5GC可以包括以下层：IP、N3协议栈。
如图2所示，中继UE的适配层(ADAPT)设置在中继UE和gNB之间的Uu接口的控制面和用户面RLC层之上。Uu-SDAP、Uu-PDCP和无线资源控制(Radio Resource Control，RRC)终止在远端UE和gNB之间，RLC、MAC和PHY终止在每个链路中(包括远端UE和中继UE之间的链路以及中继UE和gNB之间的链路)。
在一些实施例中，中继UE和网络之间的链路可以称为Uu链路，Uu路径，远端UE和网络之间的直连链路也可以称为Uu链路，Uu路径，远端UE和中继UE之间的链路可以称为PC5链路，PC5路径。
对于L2 UE-to-Network中继UE的上行链路：
中继UE的适配层支持接入PC5信道之间的上行承载映射，用于执行中继UE和网络之间的Uu路径上的传输和接出Uu信道。对于上行链路的中继业务，同一远端UE和/或不同远端UE的不同端到端承载(例如，信令无线承载(signaling radio bearers，SRB)，数据无线承载(Data Radio Bearer，DRB))可以在一个Uu信道上进行N:1映射和数据复用。
中继UE的适配层包括待中继的上行业务的远端终端的标识信息和远端终端的无线承载的标识信息，以便gNB将与远端终端的无线承载相关联的特定分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)实体的接收数据分组关联起来。
对于L2 UE-to-Network中继UE的下行链路：
中继UE的适配层可用于支持gNB处的下行承载映射，以通过中继UE和网络之间的Uu路径将远端终端的端到端无线承载(例如SRB，DRB)映射到Uu信道。中继UE的适配层可用于支持远端UE和/或不同远端UE的多个端到端无线承载(例如SRB，DRB)和中继UE和网络之间的Uu路径上的Uu信道之间的下行N:1承载映射和数据复用。
中继UE的适配层包括待中继的下行业务的远端终端的标识信息。远端终端的无线 承载的标识信息和远端终端的标识信息需要通过gNB放入中继UE的适配层，以便中继UE将从远端终端的无线承载接收到的数据分组映射到与该无线承载相关的PC5信道。
在一些场景中，远端UE可以通过多条路径连接到网络，例如，该多条路径包括远端UE和网络之间的直连路径，以及通过中继UE连接到网络的中继路径。
例如，如图3所示，远端UE可以通过中继UE连接到网络设备以及通过Uu接口直连至网络设备。其中，远端UE和中继UE之间通过PC5接口连接和通信，中继UE和网络设备之间通过Uu接口连接和通信。在一些场景中，若存在多跳中继UE，则中继UE之间通过PC5接口连接和通信，最后一条中继UE和网络设备之间通过Uu接口连接和通信。
当所述多条路径中的某条路径发生无线链路失败(Radio Link Failure，RLF)时，远端UE如何进行处理以保证远端UE和网络之间的传输是一项亟需解决的问题。
为便于理解本申请实施例的技术方案，以下通过具体实施例详述本申请的技术方案。以上相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。本申请实施例包括以下内容中的至少部分内容。
图4是根据本申请实施例的无线通信的方法200的示意性流程图，该方法200可以由图1所示的通信系统中的终端设备执行。其中，该终端设备和网络设备之间具有多条连接。
如图4所示，该方法200包括如下内容：
S210，在所述多条连接中的第一连接发生无线链路失败RLF的情况下，终端设备执行连接恢复相关操作和/或连接切换相关操作。
在本申请一些实施例中，所述连接恢复相关操作可以用于恢复发生RLF的第一连接，或者，恢复所述终端设备和网络设备之间的所有连接。这里的恢复可以通过RRC重建过程完成。
在本申请一些实施例中，所述连接切换相关操作可以用于将终端设备和网络设备之间的传输切换至未发生RLF的连接。
在一些实施例中，所述多条连接包括所述终端设备和网络设备之间的直连连接，以及所述终端设备和网络设备之间的中继连接。即，所述终端设备可以直接连接至网络设备，还可以通过中继终端连接至网络设备。
应理解，本申请实施例并不限定终端设备和网络设备之间的中继终端的数量，例如所述终端设备可以通过一个中继终端连接至网络设备，或者，也可以通过多个中继终端连接至网络设备。
在一些实施例中，所述中继终端可以是层2中继，或者，也可以是层3中继，本申请对此不作限定。
在一些实施例中，所述终端设备和网络设备之间可以具有一条中继连接，或者，也可以具有多条中继连接，本申请对此不作限定。
例如，终端设备可以通过中继UE-1连接至网络设备，同时还可以通过中继UE-2连接至网络设备。则终端设备和网络设备之间的中继连接可以包括终端设备通过中继UE-1连接至网络设备的中继连接，以及终端设备通过中继UE-2连接至网络设备的中继连接。
在一些实施例中，所述中继连接可以包括终端设备和中继终端之间的PC5连接和中继终端和网络设备之间的Uu连接。
在一些实施例中，所述直连连接也可以表述为直连链路，直连路径，Uu链路，Uu路径等。
在一些实施例中，所述PC5连接或称PC5链路，PC5路径。
在一些实施例中，所述第一连接可以包括所述终端设备和网络设备之间的直连连接。记为情况1。
即，终端设备和网络设备之间的Uu连接发生RLF，如图5所示。
在一些实施例中，所述第一连接可以包括所述终端设备和网络设备之间的中继连接。记为情况2。
在一些实施例中，对于情况2，所述第一连接发生RLF可以指所述终端设备和中继终端之间的PC5连接发生RLF，如图6所示。
在一些实施例中，所述终端设备和网络设备之间的直连连接发生RLF可以指所述终端设备和网络设备之间的Uu接口发生RLF。
在一些实施例中，所述终端设备和网络设备之间的中继连接发生RLF可以包括所述终端设备和中继终端之间的PC5接口发生RLF。
在一些实施例中，Uu连接上发生RLF的触发事件包括以下至少之一：
主小区(PCell)上的定时器T310超时；
主小区上的定时器T312超时；
在定时器T300、T301、T304、T311和T319均没有运行的情况下，接收到来自主小区组(Master Cell Group，MCG)媒体接入控制(Media Access Control，MAC)的随机接入问题指示(random access problem indication)；
根据MCG RLC的指示确定达到最大重传次数；
在定时器T304不运行时，接收到来自MCG MAC的连续的上行先听后说(Listen Before Talk，LBT)失败指示；
接收到SRB1或SRB2的完整性检查失败指示(integrity check failure indication)。
上述触发条件可以排除在RRC重建消息(RRCReestablishment)中检测到完整性(integrity)检查失败。
在一些实施例中，PC5连接上发生RLF的触发事件包括以下至少之一：
根据侧行RLC实体的指示确定已达到最大重传次数；
用于特定目的地的定时器T400超时；
根据MAC实体的指示确定已达到特定目的地的连续混合自动请求重传(Hybrid Automatic Repeat reQuest，HARQ)非连续传输(Discontinuous Transmission，DTX)的最大次数；
接收到侧行分组数据汇聚协议PDCP实体的完整性检查失败指示，所述PDCP实体与用于特定目的地的侧行SL-SRB2或SL-SRB3相关。
在一些实施例中，T300的启动条件包括：
RRC建立请求(RRCSetupRequest)消息的传输。
在一些实施例中，T300的停止条件包括：
接收到RRC建立(RRCSetup)消息或RRC拒绝(RRCReject)消息；
小区重选；
高层终止连接重建。
在一些实施例中，T301的启动条件包括：
RRC重建请求(RRCReestabilshmentRequest)消息的传输。
在一些实施例中，T301的停止条件包括：
接收到RRC重建(RRCReestablishment)消息或RRC建立(RRCSetup)消息，并且选择的小区变得不合适。
在一些实施例中，T304的启动条件包括：
接收到包括reconfigurationWithSync的RRC重配置(RRCReconfiguration)消息，或
执行有条件的重新配置，例如，应用存储的包含reconfigurationWithSync的RRCReconfiguration消息。
在一些实施例中，T304的停止条件包括：
成功完成对相应特殊小区(SpCell)的随机接入，对于辅小区组(Secondary Cell Group，SCG)的定时器T304，SCG释放。
对于MCG对应的T304，在T304超时后，在从NR切换或NR内部切换时，启动RRC重建流程，在切换到NR的情况下，执行适用于源无线接入技术(Radio Access Technology，RAT)的规范中定义的操作。如果配置了双激活协议栈(dual active protocol stack，DAPS)承载，并且源PCell没有发生RLF，则启动失败通知流程。
对于SCG对应的T304，在T304超时后，通过启动SCG失败通知流程通知网络同步重配置失败。
在一些实施例中，T310的启动条件包括：
检测到SpCell的物理层问题，例如，接收到来自低层的N310个连续的不同步(out-of-sync indication，OOS)指示。
在一些实施例中，T310的停止条件包括：
接收到低层的SpCell对应的N311个连续的同步(in-sync，IS)指示；
接收到用于小区组的包括reconfigurationWithSync的RRCReconfiguration；
rlf-TimersAndConstant重配置；
发起连接重建流程；
执行有条件的重配置，例如对小区组应用存储的包含reconfigurationWithSync的RRCReconfiguration消息；
发起MCG失败通知流程；
SCG释放，如果T310保存在SCG相关配置中。
在一些实施例中，T311的启动条件包括：发起RRC连接重建流程。
在一些实施例中，T311的停止条件包括：
选择了一个合适的NR小区或使用其他RAT的小区。
在一些实施例中，MCG相关配置中配置了T312，T312的启动条件包括：
当PCell相关配置中的T310正在运行时，测量标识(measurement identity)对应的测量报告被触发，其中该测量标识已配置T312，并且使用T312(useT312)已设置为true。
在一些实施例中，SCG相关配置中配置了T312，且useT312设置为true，T312的启动条件包括：
当PSCell相关配置中的T310正在运行时，测量标识(measurement identity)对应的测量报告被触发，其中该测量标识已配置T312。
在一些实施例中，T312的停止条件包括：
从低层接收到SpCell对应的N311个连续IS指示；
接收到包括用于小区组的reconfigurationWithSync的RRCReconfiguration；
接收到MobilityFromNRCommand；
发起连接重建过程；
rlf-TimersAndConstant重新配置；
发起MCG失败通知进程；
执行有条件的重新配置，例如对小区组应用存储的包含reconfigurationWithSync的RRCReconfiguration消息；
相应的SpCell中的T310超时；
SCG释放，如果T312保存在SCG相关配置中。
在一些实施例中，T319的启动条件包括：
RRC恢复请求消息(RRCResumeRequest)的传输。
在一些实施例中，T319的停止条件包括：
接收到RRC恢复(RRCResume)、RRCSetup、RRC释放(RRCRelease),包括暂缓配置的RRCRelease或RRCReject；
小区选择。
在一些实施例中，T400的启动条件包括：
侧行RRC重配置(RRCReconfigurationSidelink)的传输。
在一些实施例中，T400的停止条件包括：
接收到侧行RRC重配置失败(RRCReconfigurationFailureSidelink)消息或侧行RRC重配置完成(RRCReconfigurationCompleteSidelink)。
在一些实施例中，所述执行连接恢复相关操作包括但不限于以下中的至少一项：
执行所述终端设备和所述网络设备之间的RRC连接重建流程；
暂停或重建所述多个连接中除所述第一连接之外的其他连接上的传输；
暂停或重建所述第一连接上的传输；
释放所述多个连接中的除所述第一连接之外的其他连接。
释放所述第一连接。
在一些实施例中，所述执行连接切换相关操作包括以下中的至少一项：
通过所述多个连接中除所述第一连接之外的其他连接向所述网络设备发送指示信息，所述指示信息用于指示所述第一连接上发生RLF；
将所述终端设备和所述网络设备之间的传输切换至所述多个连接中除所述第一连接之外的其他连接；
将所述多个连接中除所述第一连接之外的其他连接上的载波设置为主载波；
将所述多个连接中除所述第一连接之外的其他连接上的载波或所述载波对应的小区设置为主小区。
在一些实施例中，所述网络设备接收到终端设备的指示信息之后，可以确定第一连接发生RLF。
进一步地，网络设备和终端设备可以将待进行的传输切换至未发生RLF的连接，换言之，网络设备和终端设备对于执行后续传输所使用的连接的理解一致，通过未发生RLF的连接执行后续传输，有利于保证传输性能。
在一些实施例中，所述将所述终端设备和所述网络设备之间的传输切换至所述多个连接中除所述第一连接之外的其他连接，可以包括：
将SRB和/或DRB切换至所述多个连接中除所述第一连接之外的其他连接。
在一些实施例中，终端设备将所述多个连接中除所述第一连接之外的其他连接上的载波设置为主载波。
即，终端设备将未发生RLF的连接上的载波设置为主载波，有利于保证终端设备和网络设备之间的业务的可靠传输，并且有利于保证网络设备对于终端设备的控制和管理。
在一些实施例中，终端设备将所述多个连接中除所述第一连接之外的其他连接上的载波或所述载波对应的小区设置为PCell。
即，终端设备将未发生RLF的连接上的载波或载波对应的小区作为PCell，有利于保证终端设备和网络设备之间的业务的可靠传输，并且有利于保证网络设备对于终端设备的控制和管理。
在一些实施例中，所述其他连接上的第一载波被设置为主载波，所述第一载波对应的第一小区被设置为PCell，主载波或PCell的配置信息包括所述终端设备从第一载波或第一小区获取的跟踪区代码(Tracking Area Code，TAC)和/或公共陆地移动网络(Public Land Mobile Network，PLMN)。
即，第一载波为未发生RLF的载波，第一小区为未发生RLF的小区，将主载波配置在没有发生RLF的载波上，或者，将PCell配置在没有发生RLF的载波或载波对应的小区上，一方面有利于网络设备对于终端设备的控制和管理，同时还有利于保证终端设备和网络设备之间的业务的可靠传输。
在一些实施例中，所述连接切换相关操作是在满足第一条件的情况下执行的，所述第一条件包括以下至少之一：
所述其他连接上配置了针对SRB和/或DRB的RLC信道；
所述终端设备的归属小区、主小区、TAC和PLMN中的至少一项是通过所述其他连接从所述网络设备获得的；
所述第一连接发生RLF是由特定触发事件触发的。
可选地，所述第一连接为直连连接，特定触发事件可以包括PCell上的定时器T310或T312超时。
可选地，所述第一连接为中继连接，特定触发事件可以包括：根据侧行RLC实体的指示确定已达到特定目的地(specific destination)的最大重传次数，或用于特定目的地的定时器T400超时。
以下结合实施例一和实施例二，分别说明Uu连接和PC5连接发生RLF时，终端设备的行为。
实施例一：终端设备和网络设备之间的Uu连接发生RLF。
此情况下，所述执行连接恢复相关操作包括但不限于以下中的至少一项：
执行所述终端设备和所述网络设备之间的RRC连接重建流程；
暂停或重建所述终端设备和网络设备之间的中继连接上的传输；
暂停或重建所述终端设备和网络设备之间的Uu连接上的传输；
释放所述终端设备和网络设备之间的中继连接。
释放所述终端设备和网络设备之间的Uu连接。
在一些实施例中，所述执行连接切换相关操作包括以下中的至少一项：
通过终端设备和网络设备之间的中继连接向所述网络设备发送第一指示信息，所述第一指示信息用于指示Uu连接上发生RLF；
将终端设备和网络设备之间的传输切换至所述终端设备和网络设备之间的中继连接；
将所述终端设备和网络设备之间的中继连接上的载波设置为主载波；
将所述终端设备和网络设备之间的中继连接上的载波或所述载波对应的小区设置为主小区。
在一些实施例中，所述将终端设备和网络设备之间的传输切换至所述终端设备和网络设备之间的中继连接，可以包括：
将SRB和/或DRB切换至所述终端设备和网络设备之间的中继连接。
在一些实施例中，中继连接上的第一载波被设置为主载波，或者，所述中继连接上的第一载波对应的第一小区被设置为PCell，则主载波或PCell的配置信息包括所述终端设备从第一载波或第一小区获取的TAC和/或PLMN。
在一些实施例中，所述连接切换相关操作是在满足第一条件的情况下执行的，所述第一条件包括以下至少之一：
所述中继连接上配置了针对SRB和/或DRB的RLC信道；
所述终端设备的归属小区、主小区、TAC和PLMN中的至少一项是通过所述中继连接从所述网络设备获得的；
所述Uu连接发生RLF是由特定触发事件触发的。
在一些实施例中，所述Uu连接上的载波均不是主载波，或者说，所述Uu连接上载波对应的小区均不是PCell。在这种情况下，Uu连接上的至少一个载波配置有用于无线链路监测(radio link monitoring，RLM)的参考信号和/或用于发送第一物理下行控制信道(Physical Downlink Control Channel，PDCCH)的公共搜索空间，其中，所述第一PDCCH是基于随机接入无线网络临时标识符(Random Access Radio Network Temporary Identity，RA-RNTI)加扰的，所述第一PDCCH用于调度随机接入响应(Random Access Response，RAR)。
在一些实施例中，所述用于RLM的参考信号可以用于触发定时器T310。
在一些实施例中，所述RAR用于上报随机接入问题指示。
实施例二：终端设备和网络设备之间的中继连接发生RLF，例如终端设备和中继终端之间的PC5连接发生RLF。
此情况下，所述执行连接恢复相关操作包括但不限于以下中的至少一项：
执行所述终端设备和所述网络设备之间的RRC连接重建流程；
暂停或重建所述终端设备和网络设备之间的Uu连接上的传输；
暂停或重建所述终端设备和网络设备之间的中继连接上的传输；
释放所述终端设备和网络设备之间的Uu连接。
释放所述终端设备和网络设备之间的中继连接，例如释放终端设备和中继终端之间的PC5连接。
在一些实施例中，所述执行连接切换相关操作包括以下中的至少一项：
通过终端设备和网络设备之间的Uu连接向所述网络设备发送第二指示信息，所述第二指示信息用于指示终端设备和网络设备之间的中继连接(例如终端设备和中继终端之间的PC5连接)上发生RLF；
将终端设备和网络设备之间的传输切换至所述终端设备和网络设备之间的Uu连接；
将所述终端设备和网络设备之间的Uu连接上的载波设置为主载波；
将所述终端设备和网络设备之间的Uu连接上的载波或所述载波对应的小区设置为主小区。
在一些实施例中，所述将终端设备和网络设备之间的传输切换至所述终端设备和网络设备之间的Uu连接，可以包括：
将SRB和/或DRB切换至所述终端设备和网络设备之间的Uu连接。
在一些实施例中，Uu连接上的第二载波被设置为主载波，或者，所述第二载波对应的第二小区被设置为PCell，则主载波或PCell的配置信息包括所述终端设备从第二载波或第二小区获取的TAC和/或PLMN。
在一些实施例中，所述连接切换相关操作是在满足第一条件的情况下执行的，所述第一条件包括以下至少之一：
所述终端设备和网络设备之间的Uu连接上配置了针对SRB和/或DRB的RLC信道；
所述终端设备的归属小区、主小区、TAC和PLMN中的至少一项是通过终端设备和网络设备之间的Uu连接从所述网络设备获得的；
所述终端设备和网络设备之间的中继连接(例如终端设备和中继终端之间的PC5连接)发生RLF是由特定触发事件触发的。
综上，在本申请实施例中，在终端设备和网络设备之间的多条连接中的第一连接发生RLF的情况下，终端设备可以执行连接恢复相关操作和/或连接切换相关操作，以恢复发生RLF的连接或将终端设备和网络设备之间的传输切换至未发生RLF的连接，有利于保证终端设备和网络设备之间的传输的正常执行。
上文结合图4至图6，详细描述了本申请的方法实施例，下文结合图7至图9，详细描述本申请的装置实施例，应理解，装置实施例与方法实施例相互对应，类似的描述可以参照方法实施例。
图7示出了根据本申请实施例的终端设备400的示意性框图。如图7所示，该终端设备400包括：
处理单元410，用于在所述终端设备和网络设备之间的多条连接中的第一连接发生无线链路失败RLF的情况下，执行连接恢复相关操作和/或连接切换相关操作。
在一些实施例中，所述执行连接恢复相关操作包括以下中的至少一项：
执行所述终端设备和所述网络设备之间的无线资源控制RRC连接重建流程；
暂停或重建所述多个连接中除所述第一连接之外的其他连接上的传输；
暂停或重建所述第一连接上的传输；
释放所述多个连接中的除所述第一连接之外的其他连接。
释放所述第一连接。
在一些实施例中，所述执行连接切换相关操作包括以下中的至少一项：
通过所述多个连接中除所述第一连接之外的其他连接向所述网络设备发送指示信息，所述指示信息用于指示所述第一连接上发生RLF；
将所述终端设备和所述网络设备之间的传输切换至所述多个连接中除所述第一连接之外的其他连接；
将所述多个连接中除所述第一连接之外的其他连接上的载波设置为主载波；
将所述多个连接中除所述第一连接之外的其他连接上的载波或所述载波对应的小区设置为主小区。
在一些实施例中，将所述终端设备和所述网络设备之间的传输切换至所述多个连接中除所述第一连接之外的其他连接，包括：
将信令无线承载SRB和/或数据无线承载DRB切换至所述多个连接中除所述第一连接之外的其他连接。
在一些实施例中，所述其他连接上的第一载波被设置为主载波，或者，所述其他连接上的第一载波对应的第一小区被设置为主小区，所述主载波的配置信息包括所述终端设备从所述第一载波或所述第一小区获取的跟踪区代码TAC和/或公共陆地移动网络PLMN。
在一些实施例中，所述连接切换相关操作是在满足第一条件的情况下执行的，所述第一条件包括以下至少之一：
所述其他连接上配置了针对SRB和/或DRB的无线链路控制RLC信道；
所述终端设备的归属小区、主小区、TAC和PLMN中的至少一项是通过所述其他连接从所述网络设备获得的；
所述第一连接发生RLF是由特定触发事件触发的。
在一些实施例中，所述第一连接为所述终端设备和所述网络设备之间的直连连接，所述其他连接包括所述终端设备和所述网络设备之间的中继连接。
在一些实施例中，所述第一连接上的至少一个载波配置有用于无线链路监测RLM的参考信号和/或用于发送第一物理下行控制信道PDCCH的公共搜索空间，其中，所述第一PDCCH是基于随机接入无线网络临时标识符RA-RNTI加扰的，所述第一PDCCH用于调度随机接入响应RAR。
在一些实施例中，所述第一连接上的载波均不是主载波。
在一些实施例中，所述第一连接上发生RLF的触发事件包括以下至少之一：
主小区上的定时器T310超时；
主小区上的定时器T312超时；
在定时器T300、T301、T304、T311和T319均没有运行的情况下，接收到来自主小区组MCG媒体接入控制MAC的随机接入问题指示；
根据MCG RLC的指示确定达到最大重传次数；
在定时器T304不运行时，接收到来自MCG MAC连续的上行先听后说LBT失败指示；
接收到SRB1或SRB2的完整性检查失败指示，
在一些实施例中，所述第一连接为所述终端设备和所述网络设备之间的中继连接，所述其他连接包括所述终端设备和所述网络设备之间的直连连接。
在一些实施例中，所述第一连接上发生RLF的触发事件包括以下至少之一：
根据侧行RLC实体的指示确定已达到最大重传次数；
用于特定目的地的定时器T400超时；
根据MAC实体的指示确定已达到特定目的地的连续混合自动请求重传HARQ非连 续传输DTX的最大次数；
接收到侧行分组数据汇聚协议PDCP实体的完整性检查失败指示，所述PDCP实体与用于特定目的地的侧行SL-SRB2或SL-SRB3相关。
可选地，在一些实施例中，上述通信单元可以是通信接口或收发器，或者是通信芯片或者片上系统的输入输出接口。上述处理单元可以是一个或多个处理器。
应理解，根据本申请实施例的终端设备400可对应于本申请方法实施例中的终端设备，并且终端设备400中的各个单元的上述和其它操作和/或功能分别为了实现图4至图6所示方法200中终端设备的相应流程，为了简洁，在此不再赘述。
综上，在本申请实施例中，在终端设备和网络设备之间的多条连接中的第一连接发生RLF的情况下，终端设备可以执行连接恢复相关操作和/或连接切换相关操作，以恢复发生RLF的连接或将终端设备和网络设备之间的传输切换至未发生RLF的连接，有利于保证终端设备和网络设备之间的传输的正常执行。
图8是本申请实施例提供的一种通信设备600示意性结构图。图8所示的通信设备600包括处理器610，处理器610可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图8所示，通信设备600还可以包括存储器620。其中，处理器610可以从存储器620中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器620可以是独立于处理器610的一个单独的器件，也可以集成在处理器610中。
可选地，如图8所示，通信设备600还可以包括收发器630，处理器610可以控制该收发器630与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器630可以包括发射机和接收机。收发器630还可以进一步包括天线，天线的数量可以为一个或多个。
可选地，该通信设备600具体可为本申请实施例的网络设备，并且该通信设备600可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该通信设备600具体可为本申请实施例的移动终端/终端设备，并且该通信设备600可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
图9是本申请实施例的芯片的示意性结构图。图9所示的芯片700包括处理器710，处理器710可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图9所示，芯片700还可以包括存储器720。其中，处理器710可以从存储器720中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器720可以是独立于处理器710的一个单独的器件，也可以集成在处理器710中。
可选地，该芯片700还可以包括输入接口730。其中，处理器710可以控制该输入接口730与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
可选地，该芯片700还可以包括输出接口740。其中，处理器710可以控制该输出接口740与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
可选地，该芯片可应用于本申请实施例中的网络设备，并且该芯片可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该芯片可应用于本申请实施例中的移动终端/终端设备，并且该芯片可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
应理解，本申请实施例的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。
可选的，该计算机可读存储介质可应用于本申请实施例中的网络设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机可读存储介质可应用于本申请实施例中的移动终端/终端设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。
可选的，该计算机程序产品可应用于本申请实施例中的网络设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序产品可应用于本申请实施例中的移动终端/终端设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序。
可选的，该计算机程序可应用于本申请实施例中的网络设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序可应用于本申请实施例中的移动终端/终端设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (29)

  1. 一种无线通信的方法，其特征在于，应用于终端设备，其中，所述终端设备和网络设备之间具有多条连接，所述方法包括：
    在所述多条连接中的第一连接发生无线链路失败RLF的情况下，执行连接恢复相关操作和/或连接切换相关操作。
  2. 根据权利要求1所述的方法，其特征在于，所述执行连接恢复相关操作包括以下中的至少一项：
    执行所述终端设备和所述网络设备之间的无线资源控制RRC连接重建流程；
    暂停或重建所述多个连接中除所述第一连接之外的其他连接上的传输；
    暂停或重建所述第一连接上的传输；
    释放所述多个连接中的除所述第一连接之外的其他连接。
    释放所述第一连接。
  3. 根据权利要求1或2所述的方法，其特征在于，所述执行连接切换相关操作包括以下中的至少一项：
    通过所述多个连接中除所述第一连接之外的其他连接向所述网络设备发送指示信息，所述指示信息用于指示所述第一连接上发生RLF；
    将所述终端设备和所述网络设备之间的传输切换至所述多个连接中除所述第一连接之外的其他连接；
    将所述多个连接中除所述第一连接之外的其他连接上的载波设置为主载波；
    将所述多个连接中除所述第一连接之外的其他连接上的载波或所述载波对应的小区设置为主小区。
  4. 根据权利要求3所述的方法，其特征在于，将所述终端设备和所述网络设备之间的传输切换至所述多个连接中除所述第一连接之外的其他连接，包括：
    将信令无线承载SRB和/或数据无线承载DRB切换至所述多个连接中除所述第一连接之外的其他连接。
  5. 根据权利要求3或4所述的方法，其特征在于，所述其他连接上的第一载波被设置为主载波，或者，所述其他连接上的第一载波对应的第一小区被设置为主小区，所述主载波的配置信息包括所述终端设备从所述第一载波或所述第一小区获取的跟踪区代码TAC和/或公共陆地移动网络PLMN。
  6. 根据权利要求2-5中任一项所述的方法，其特征在于，所述连接切换相关操作是在满足第一条件的情况下执行的，所述第一条件包括以下至少之一：
    所述其他连接上配置了针对SRB和/或DRB的无线链路控制RLC信道；
    所述终端设备的归属小区、主小区、TAC和PLMN中的至少一项是通过所述其他连接从所述网络设备获得的；
    所述第一连接发生RLF是由特定触发事件触发的。
  7. 根据权利要求2-6中任一项所述的方法，其特征在于，所述第一连接为所述终端设备和所述网络设备之间的直连连接，所述其他连接包括所述终端设备和所述网络设备之间的中继连接。
  8. 根据权利要求7所述的方法，其特征在于，所述第一连接上的至少一个载波配置有用于无线链路监测RLM的参考信号和/或用于发送第一物理下行控制信道PDCCH的公共搜索空间，其中，所述第一PDCCH是基于随机接入无线网络临时标识符RA-RNTI加扰的，所述第一PDCCH用于调度随机接入响应RAR。
  9. 根据权利要求8所述的方法，其特征在于，所述第一连接上的载波均不是主载波。
  10. 根据权利要求7-9中任一项所述的方法，其特征在于，所述第一连接上发生RLF的触发事件包括以下至少之一：
    主小区上的定时器T310超时；
    主小区上的定时器T312超时；
    在定时器T300、T301、T304、T311和T319均没有运行的情况下，接收到来自主小区组MCG媒体接入控制MAC的随机接入问题指示；
    根据MCG RLC的指示确定达到最大重传次数；
    在定时器T304不运行时，接收到来自MCG MAC连续的上行先听后说LBT失败指示；
    接收到SRB1或SRB2的完整性检查失败指示，
  11. 根据权利要求1-6中任一项所述的方法，其特征在于，所述第一连接为所述终端设备和所述网络设备之间的中继连接，所述其他连接包括所述终端设备和所述网络设备之间的直连连接。
  12. 根据权利要求11所述的方法，其特征在于，所述第一连接上发生RLF的触发事件包括以下至少之一：
    根据侧行RLC实体的指示确定已达到最大重传次数；
    用于特定目的地的定时器T400超时；
    根据MAC实体的指示确定已达到特定目的地的连续混合自动请求重传HARQ非连续传输DTX的最大次数；
    接收到侧行分组数据汇聚协议PDCP实体的完整性检查失败指示，所述PDCP实体与用于特定目的地的侧行SL-SRB2或SL-SRB3相关。
  13. 一种终端设备，其特征在于，包括：
    处理单元，用于在所述终端设备和网络设备之间的多条连接中的第一连接发生无线链路失败RLF的情况下，执行连接恢复相关操作和/或连接切换相关操作。
  14. 根据权利要求13所述的终端设备，其特征在于，所述执行连接恢复相关操作包括以下中的至少一项：
    执行所述终端设备和所述网络设备之间的无线资源控制RRC连接重建流程；
    暂停或重建所述多个连接中除所述第一连接之外的其他连接上的传输；
    暂停或重建所述第一连接上的传输；
    释放所述多个连接中的除所述第一连接之外的其他连接。
    释放所述第一连接。
  15. 根据权利要求13或14所述的终端设备，其特征在于，所述执行连接切换相关操作包括以下中的至少一项：
    通过所述多个连接中除所述第一连接之外的其他连接向所述网络设备发送指示信息，所述指示信息用于指示所述第一连接上发生RLF；
    将所述终端设备和所述网络设备之间的传输切换至所述多个连接中除所述第一连接之外的其他连接；
    将所述多个连接中除所述第一连接之外的其他连接上的载波设置为主载波；
    将所述多个连接中除所述第一连接之外的其他连接上的载波或所述载波对应的小区设置为主小区。
  16. 根据权利要求15所述的终端设备，其特征在于，将所述终端设备和所述网络设备之间的传输切换至所述多个连接中除所述第一连接之外的其他连接，包括：
    将信令无线承载SRB和/或数据无线承载DRB切换至所述多个连接中除所述第一连接之外的其他连接。
  17. 根据权利要求15或16所述的终端设备，其特征在于，所述其他连接上的第一载波被设置为主载波，或者，所述其他连接上的第一载波对应的第一小区被设置为主小区，所述主载波的配置信息包括所述终端设备从所述第一载波或所述第一小区获取的跟踪区代码TAC和/或公共陆地移动网络PLMN。
  18. 根据权利要求14-17中任一项所述的终端设备，其特征在于，所述连接切换相 关操作是在满足第一条件的情况下执行的，所述第一条件包括以下至少之一：
    所述其他连接上配置了针对SRB和/或DRB的无线链路控制RLC信道；
    所述终端设备的归属小区、主小区、TAC和PLMN中的至少一项是通过所述其他连接从所述网络设备获得的；
    所述第一连接发生RLF是由特定触发事件触发的。
  19. 根据权利要求14-18中任一项所述的终端设备，其特征在于，所述第一连接为所述终端设备和所述网络设备之间的直连连接，所述其他连接包括所述终端设备和所述网络设备之间的中继连接。
  20. 根据权利要求19所述的终端设备，其特征在于，所述第一连接上的至少一个载波配置有用于无线链路监测RLM的参考信号和/或用于发送第一物理下行控制信道PDCCH的公共搜索空间，其中，所述第一PDCCH是基于随机接入无线网络临时标识符RA-RNTI加扰的，所述第一PDCCH用于调度随机接入响应RAR。
  21. 根据权利要求21所述的终端设备，其特征在于，所述第一连接上的载波均不是主载波。
  22. 根据权利要求19-21中任一项所述的终端设备，其特征在于，所述第一连接上发生RLF的触发事件包括以下至少之一：
    主小区上的定时器T310超时；
    主小区上的定时器T312超时；
    在定时器T300、T301、T304、T311和T319均没有运行的情况下，接收到来自主小区组MCG媒体接入控制MAC的随机接入问题指示；
    根据MCG RLC的指示确定达到最大重传次数；
    在定时器T304不运行时，接收到来自MCG MAC连续的上行先听后说LBT失败指示；
    接收到SRB1或SRB2的完整性检查失败指示，
  23. 根据权利要求14-18中任一项所述的终端设备，其特征在于，所述第一连接为所述终端设备和所述网络设备之间的中继连接，所述其他连接包括所述终端设备和所述网络设备之间的直连连接。
  24. 根据权利要求23所述的终端设备，其特征在于，所述第一连接上发生RLF的触发事件包括以下至少之一：
    根据侧行RLC实体的指示确定已达到最大重传次数；
    用于特定目的地的定时器T400超时；
    根据MAC实体的指示确定已达到特定目的地的连续混合自动请求重传HARQ非连续传输DTX的最大次数；
    接收到侧行分组数据汇聚协议PDCP实体的完整性检查失败指示，所述PDCP实体与用于特定目的地的侧行SL-SRB2或SL-SRB3相关。
  25. 一种终端设备，其特征在于，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至12中任一项所述的方法。
  26. 一种芯片，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至12中任一项所述的方法。
  27. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求1至12中任一项所述的方法。
  28. 一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求1至12中任一项所述的方法。
  29. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求1至12中任一项所述的方法。
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