WO2021196100A1 - 一种小区切换方法、电子设备及存储介质 - Google Patents

一种小区切换方法、电子设备及存储介质 Download PDF

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Publication number
WO2021196100A1
WO2021196100A1 PCT/CN2020/082855 CN2020082855W WO2021196100A1 WO 2021196100 A1 WO2021196100 A1 WO 2021196100A1 CN 2020082855 W CN2020082855 W CN 2020082855W WO 2021196100 A1 WO2021196100 A1 WO 2021196100A1
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Prior art keywords
terminal device
handover
trigger condition
radio link
timer
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PCT/CN2020/082855
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English (en)
French (fr)
Inventor
李海涛
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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/CN2020/082855 priority Critical patent/WO2021196100A1/zh
Priority to CN202080098041.2A priority patent/CN115280845B/zh
Publication of WO2021196100A1 publication Critical patent/WO2021196100A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point

Definitions

  • This application relates to the field of wireless communication technology, and in particular to a cell handover method, electronic equipment and storage medium.
  • conditional handover Conditional HandOver, CHO
  • MCG failure recovery master cell group failure recovery
  • the embodiments of this application provide a cell handover method, electronic equipment, and storage medium, which clarify how the terminal equipment should operate if the terminal equipment has a radio link failure in the MCG in the scenario where CHO and MCG failure recovery are configured at the same time in the wireless communication system .
  • an embodiment of the present application provides a cell handover method, including: in the case of a radio link failure of a primary cell group for a terminal device in a first connected state, the terminal device determines whether the handover trigger condition is satisfied; The terminal device performs conditional switching or reports failure information of the radio link of the primary cell group based on the determined result.
  • an embodiment of the present application provides a cell handover method, including: a network device sends indication information, the indication information is used to indicate that the terminal device fails in the primary cell group radio link and the terminal device meets the handover trigger condition. At the same moment, the terminal device performs conditional handover to the target cell corresponding to the handover trigger condition, or the terminal device sends a first message.
  • an embodiment of the present application provides a terminal device.
  • the terminal device includes: a processing unit configured to determine whether the terminal device in the first connected state determines whether a handover is satisfied when a radio link failure occurs in the primary cell group Trigger condition: Perform conditional handover based on the determined result or report primary cell group radio link failure information.
  • an embodiment of the present application provides a network device, and the network device includes:
  • the sending unit is configured to send instruction information, the instruction information being used to instruct the terminal device to perform handover to the handover when the primary cell group radio link failure occurs at the same time when the terminal equipment meets the handover trigger condition. Trigger conditional handover of the target cell corresponding to the condition, or the terminal device sends the first message.
  • an embodiment of the present application provides a terminal device, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to execute the above-mentioned terminal when the computer program is running. Steps of the cell handover method performed by the device.
  • an embodiment of the present application provides a terminal device, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to execute the above-mentioned network when the computer program is running. Steps of the cell handover method performed by the device.
  • an embodiment of the present application provides a chip, including a processor, configured to call and run a computer program from a memory, so that a terminal device installed with the chip executes the cell handover method performed by the terminal device.
  • an embodiment of the present application provides a chip, including a processor, configured to call and run a computer program from a memory, so that a network device installed with the chip executes the cell handover method performed by the terminal device.
  • an embodiment of the present application provides a storage medium storing an executable program, and when the executable program is executed by a processor, the above-mentioned cell handover method executed by the terminal device is implemented.
  • an embodiment of the present application provides a storage medium that stores an executable program, and when the executable program is executed by a processor, it implements the cell handover method executed by the network device described above.
  • an embodiment of the present application provides a computer program product, including computer program instructions, which cause a computer to execute the cell handover method performed by the above-mentioned terminal device.
  • an embodiment of the present application provides a computer program product, including computer program instructions that cause a computer to execute the cell handover method performed by the above-mentioned network device.
  • an embodiment of the present application provides a computer program that enables a computer to execute the cell handover method performed by the above terminal device.
  • an embodiment of the present application provides a computer program that enables a computer to execute the cell handover method performed by the terminal network device.
  • the cell handover method, electronic equipment, and storage medium include: when a terminal device in the first connected state has a radio link failure in a primary cell group, the terminal device determines whether the handover trigger condition is satisfied ; The terminal device performs conditional switching based on the determined result or reports the failure information of the radio link of the primary cell group. In this way, in the case of MCG radio link failure, the terminal device first determines whether the handover trigger condition is met, which can effectively avoid sending the MCGFailureInformation message to the network device and starting the first timer. The first timer timeout is introduced.
  • the RRC connection reconstruction process reduces the interruption time of data transmission and improves the performance of data transmission.
  • Figure 1 is a schematic diagram of a carrier aggregation according to this application.
  • FIG. 2 is a schematic diagram of another carrier aggregation of this application.
  • Figure 3 is a schematic diagram of the network deployment and networking architecture of the EN-DC application
  • Figure 4a is a schematic diagram of the communication scenario 3A of the EN-DC of this application.
  • Figure 4b is a schematic diagram of communication scenario 3 of the EN-DC of this application.
  • FIG. 5a is a schematic diagram of a network architecture of a dual connection mode according to this application.
  • Figure 5b is a schematic diagram of the network architecture of another dual-connection mode of this application.
  • FIG. 5c is a schematic diagram of the network architecture of another dual connection mode of this application.
  • Figure 6 is a schematic diagram of the handover process of CHO application
  • Figure 7 is a schematic diagram of the structure of the communication system of this application.
  • FIG. 8 is a schematic diagram of an optional processing flow of a cell handover method according to an embodiment of this application.
  • FIG. 9 is a schematic diagram of an optional detailed processing flow of a cell handover method according to an embodiment of this application.
  • FIG. 10 is a schematic diagram of another optional detailed processing flow of a cell handover method according to an embodiment of this application.
  • FIG. 11 is a schematic diagram of another optional detailed processing flow of the cell handover method according to an embodiment of this application.
  • FIG. 12 is a schematic diagram of another optional processing flow of a cell handover method according to an embodiment of this application.
  • FIG. 13 is a schematic diagram of an optional structure of a terminal device according to an embodiment of the application.
  • FIG. 14 is a schematic diagram of an optional composition structure of a network device according to an embodiment of the application.
  • FIG. 15 is a schematic diagram of the hardware composition structure of an electronic device according to an embodiment of the application.
  • 5G Enhance Mobile Broadband
  • URLLC Ultra Reliable Low Latency Communications
  • mMTC Massive Machine Type Communication
  • eMBB still aims for users to obtain multimedia content, services and data, and its demand is growing very rapidly.
  • eMBB may be deployed in different scenarios, such as indoors, urban areas, rural areas, etc., its capabilities and requirements are also quite different, so it cannot be generalized, and must be analyzed in detail in conjunction with specific deployment scenarios.
  • Typical applications of URLLC include: industrial automation, power automation, telemedicine operations (surgery), traffic safety protection, etc.
  • Typical features of mMTC include: high connection density, small data volume, delay-insensitive services, low-cost modules and long service life.
  • Carrier Aggregation (CA) technology can meet the high-speed requirements of medium terminal equipment.
  • a schematic diagram of carrier aggregation is shown in Figure 1; another schematic diagram of carrier aggregation is shown in Figure 2.
  • Carrier aggregation is through joint scheduling and the use of resources on multiple component carriers (CC) to make The NR system can support a larger bandwidth, which can achieve a higher system peak rate. According to the continuity of the aggregated carriers on the spectrum, it can be divided into: continuous carrier aggregation and discontinuous carrier aggregation; according to whether the bands of the aggregated carriers are the same, it can be divided into: Intra-band carrier aggregation and inter-band carrier aggregation.
  • PCC Primary Component Carrier
  • RRC Radio Resource Control
  • NAS non-access stratum
  • SCC secondary component carrier
  • C-RNTI Cell Radio Network Temporary Identifier
  • the network equipment realizes that the C-RNTI does not conflict in the cell where each carrier is located. Since both asymmetric carrier aggregation and symmetric carrier aggregation are supported, the carriers that require aggregation must have downlink but may not have uplink. Moreover, for the primary carrier cell, there must be a physical downlink control channel (PDCCH) and PUCCH of the cell, and only the primary carrier cell has a PUCCH, and other secondary carrier cells may have a PDCCH.
  • PDCH physical downlink control channel
  • LTE Long Term Evolution
  • NR New Radio
  • EN-DC Dual Connectivity
  • LTE serves as the master node (Master Node, MN)
  • NR serves as the secondary node (Secondary Node, SN).
  • EN-DC communication scenarios include scenario 3A as shown in FIG. 4a and scenario 3 as shown in FIG. 4b.
  • the main RRC control function of the MN node and the control plane leading to the CN, the SN node can be configured with auxiliary signaling, such as SRB3, which mainly provides data transmission functions.
  • SRB3 auxiliary signaling
  • the primary cell of the MN node is still the PCell, and the primary cell of the SN is called the primary secondary cell (Primary Secondary Cell, PSCell).
  • the network architecture diagram of the NE-DC mode is shown in Figure 5a; the network architecture diagram of the 5GC-EN-DC mode is shown in Figure 5b; the network of the NR-DC mode Schematic diagram of the architecture, as shown in Figure 5c.
  • EN-DC the core network connected to the access network is EPC, while the core network connected to other DC modes is 5GC.
  • the handover process of CHO is shown in Figure 6.
  • the terminal equipment performs cell measurement, configuration and reporting according to the configuration information and measurement configuration of the target cell sent by the source network equipment; the source network equipment and the target network equipment prepare for handover; the terminal equipment judges When the CHO handover execution condition for the target cell is met, the terminal device executes handover to the target cell according to the pre-configured CHO command (command) (such as triggering a random access process and sending a handover completion message), and then establishes a connection with the target network The connection of the device.
  • command such as triggering a random access process and sending a handover completion message
  • the CHO command includes the configuration information of the target cell and the CHO handover execution condition configuration; the CHO handover execution condition configuration is determined by the source network device, and the source network device configures the determined CHO handover execution condition configuration through the radio resource control (Radio Resource Control). , RRC) message is sent to the terminal device.
  • Radio Resource Control Radio Resource Control
  • the terminal device determines that the MCG in the MR-DC has a radio link failure, the terminal device will trigger the RRC connection re-establishment process, regardless of the quality of the SCG.
  • R16 is further enhanced.
  • the terminal device reports the MCGFailureInformation information to the MN through the SN node, and at the same time starts the T316 timer. If the terminal device receives an RRC message (such as an RRC connection release message or an RRC reconfiguration message (including a handover command)) sent by the MN node through the SN node before the T316 timer expires, the terminal device stops the T316 timer. If the T316 timer expires, the terminal device triggers the RRC re-establishment process.
  • an RRC message such as an RRC connection release message or an RRC reconfiguration message (including a handover command)
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • LTE frequency division duplex FDD
  • TDD LTE Time division duplex
  • LTE-A advanced long term evolution
  • NR new radio
  • evolution system of NR system LTE on unlicensed frequency bands (LTE-based access to unlicensed spectrum, LTE-U) system, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed frequency bands, universal mobile telecommunication system (UMTS), global Connected microwave access (worldwide interoperability for microwave access, WiMAX) communication systems, wireless local area networks (WLAN), wireless fidelity (WiFi), next-generation communication systems or other communication systems, etc.
  • WiMAX wireless local area networks
  • WiFi wireless fidelity
  • next-generation communication systems or other communication systems etc.
  • the network equipment involved in the embodiments of this application may be a common base station (such as NodeB or eNB or gNB), a new radio controller (NR controller), a centralized network element (centralized unit), a new radio base station, Radio remote module, micro base station, relay, distributed unit, reception point (transmission reception point, TRP), transmission point (transmission point, TP), or any other equipment.
  • a common base station such as NodeB or eNB or gNB
  • NR controller new radio controller
  • a centralized network element centralized unit
  • a new radio base station Radio remote module
  • micro base station relay, distributed unit, reception point (transmission reception point, TRP), transmission point (transmission point, TP), or any other equipment.
  • TRP transmission reception point
  • TP transmission point
  • the terminal device may be any terminal.
  • the terminal device may be a user equipment of machine type communication. That is to say, the terminal equipment can also be referred to as user equipment UE, mobile station (mobile station, MS), mobile terminal (mobile terminal), terminal (terminal), etc., and the terminal device can be accessed via a radio access network.
  • network, RAN communicates with one or more core networks.
  • the terminal device can be a mobile phone (or called a "cellular" phone), a computer with a mobile terminal, etc., for example, the terminal device can also be a portable or pocket-sized , Handheld, computer built-in or vehicle-mounted mobile devices that exchange language and/or data with the wireless access network.
  • the terminal device may be a user equipment of machine type communication. That is to say, the terminal equipment can also be referred to as user equipment UE, mobile station (mobile station, MS), mobile terminal (mobile terminal), terminal (terminal), etc., and the terminal device can be accessed via a radio access network.
  • network, RAN communicates
  • network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, balloons, and satellites.
  • the embodiments of the present application do not limit the application scenarios of network equipment and terminal equipment.
  • communication between network equipment and terminal equipment and between terminal equipment and terminal equipment can be carried out through licensed spectrum, or through unlicensed spectrum, or through licensed spectrum and terminal equipment at the same time. Unlicensed spectrum for communication.
  • Between network equipment and terminal equipment and between terminal equipment and terminal equipment can communicate through the frequency spectrum below 7 gigahertz (gigahertz, GHz), can also communicate through the frequency spectrum above 7 GHz, and can also use the frequency spectrum below 7 GHz and Communication is performed in the frequency spectrum above 7GHz.
  • the embodiment of the present application does not limit the spectrum resource used between the network device and the terminal device.
  • D2D device to device
  • M2M machine to machine
  • MTC machine type communication
  • V2V vehicle to vehicle
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 7.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B
  • eNB evolved base station
  • CRAN Cloud Radio Access Network
  • the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches
  • the communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110.
  • the "terminal equipment” used here includes but is not limited to connection via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, and direct cable connection ; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • PSTN Public Switched Telephone Networks
  • DSL Digital Subscriber Line
  • WLAN wireless local area networks
  • IoT Internet of Things
  • a terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio telephone transceivers Electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the terminal devices 120 may perform direct terminal connection (Device to Device, D2D) communication.
  • D2D Direct terminal connection
  • the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • Figure 7 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 having a communication function and a terminal device 120.
  • the network device 110 and the terminal device 120 may be the specific devices described above, which 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 the embodiment of the present application.
  • An optional processing procedure of the cell handover method provided in the embodiment of the present application, as shown in FIG. 8, includes the following steps:
  • Step S201 When a terminal device in the first connected state has a radio link failure in the primary cell group, the terminal device determines whether a handover trigger condition is met.
  • the first connection state may be a dual connection state.
  • Step S202 The terminal device performs conditional handover or reports the failure information of the radio link of the primary cell group based on the determined result.
  • the terminal device in the dual connection state (such as the terminal device in the MR-DC state) occurs at the same time when the MCG radio link failure occurs and at least one handover trigger condition is met, the terminal device Without sending the first message (such as the MCGFailureInformation message) to the network device, the terminal device performs conditional handover to the target cell corresponding to the handover trigger condition.
  • the terminal device does not start the first timer either; the first timer may be the T316 timer.
  • the terminal device may receive the instruction information sent by the network device, and the instruction information is used to instruct the terminal device to execute the switching trigger when the MCG radio link failure occurs at the same time as the switching trigger condition is met.
  • Conditional handover of the target cell corresponding to the condition in this scenario, the terminal device switches to the conditional handover of the target cell corresponding to the handover trigger condition according to the instruction information sent by the network device.
  • the terminal device can also perform conditional handover to the target cell corresponding to the handover trigger condition when the MCG radio link failure and the handover trigger condition are met at the same time according to the agreement.
  • the indication information may be carried in an RRC message.
  • the terminal device in the dual connection state (such as the terminal device in the MR-DC state) occurs at the same time when the MCG radio link failure occurs and at least one handover trigger condition is met, the terminal device does not perform the handover Trigger the condition handover of the target cell corresponding to the trigger condition, instead, it sends a first message (such as MCGFailureInformation message) to the network device to inform the network device that the radio link of the primary cell has failed; the terminal device can also start the first timer, the first The timer can be a T316 timer. If during the running of the first timer, the terminal device receives an RRC message (such as an RRC connection release message, or an RRC reconfiguration message, etc.) sent by the network device, the terminal device stops running the first timer.
  • an RRC message such as an RRC connection release message, or an RRC reconfiguration message, etc.
  • the terminal device may receive the first indication information sent by the network device, and the indication information is used to indicate that when the MCG radio link fails and the handover trigger condition is met at the same time, the first indication information is sent to the network device.
  • the operation of the message In this scenario, the terminal device sends the first message to the network device according to the instruction information sent by the network device.
  • the terminal device may also send the first message to the network device when the MCG radio link failure and the handover trigger condition are met at the same time according to the agreement.
  • the indication information may be carried in an RRC message.
  • the terminal device in the dual connection state fails in the MCG radio link
  • the terminal device sends the first message (such as MCGFailureInformation Message)
  • the terminal device also starts the first timer (such as the T316 timer)
  • the terminal device continues to perform CHO condition evaluation. Then, during the operation of the first timer, the terminal device does not receive the RRC message sent by the MN node through the SN node, and meets the handover trigger condition of at least one target cell, the terminal device immediately performs conditional handover to the target cell and stops Run the first timer.
  • the cell handover method provided in the embodiments of the present application may further include:
  • the terminal device receives the CHO configuration information sent by the network device, and the configuration information may include the configuration of at least one target cell and the handover trigger condition of the at least one target cell.
  • the cell handover method provided in the embodiments of the present application may further include:
  • the terminal equipment performs MCG radio link detection and CHO condition evaluation.
  • Another optional detailed processing procedure of the cell handover method provided in the embodiment of the present application, as shown in FIG. 9, includes the following steps:
  • Step S301 The terminal device receives the CHO configuration sent by the network device.
  • the terminal device works in a dual connection mode, such as MR-DC mode; the terminal device is a terminal device in a connected state.
  • the configuration of the CHO may include the configuration of at least one target cell and the handover trigger condition of the at least one target cell.
  • Step S302 the terminal equipment performs MCG radio link monitoring and CHO condition evaluation.
  • the terminal device performs CHO condition evaluation for the terminal device to determine or judge whether the handover trigger condition is satisfied.
  • Step S303 If the MCG radio link failure occurs at the same time as the handover trigger condition of at least one target cell is met, the terminal device selects a target cell for conditional handover according to the configuration of the network device.
  • the network device sends configuration information to the terminal device through RRC signaling, and the configuration information is used to indicate that the MCG radio link failure occurs at the same time as the handover trigger condition of at least one target cell is met.
  • the terminal device performs conditional switching.
  • the terminal device does not send the first message to the network device, that is, it does not notify the network device of the MCG radio link failure, and does not start the first timer.
  • the first message may be MCG radio link failure
  • the first timer may be a T316 timer.
  • Another optional detailed processing procedure of the cell handover method provided by the embodiment of the present application, as shown in FIG. 10, includes the following steps:
  • Step S401 The terminal device receives the CHO configuration sent by the network device.
  • the terminal device works in a dual connection mode, such as MR-DC mode; the terminal device is a terminal device in a connected state.
  • the configuration of the CHO may include the configuration of at least one target cell and the handover trigger condition of the at least one target cell.
  • step S402 the terminal equipment performs MCG radio link monitoring and CHO condition evaluation.
  • the terminal device performs CHO condition evaluation for the terminal device to determine or judge whether the handover trigger condition is satisfied.
  • Step S403 If MCG radio link failure occurs, the terminal device sends a first message, continues to perform CHO condition evaluation, and starts a first timer.
  • the terminal device if an MCG radio link failure occurs, the terminal device sends a first message to the network device to inform the network device that the MCG radio link failure occurs; wherein, the first message may be MCG radio link failure ,
  • the first timer may be a T316 timer.
  • Step S404 if the terminal device does not receive the RRC message sent by the MN node through the SN node (such as the RRC connection release message, or the RRC reconfiguration message, etc.) during the running of the first timer, and the terminal device performs the CHO condition evaluation If it is determined that the terminal device meets the handover trigger condition of at least one target cell, the terminal agency selects a target cell for conditional handover.
  • the terminal device does not receive the RRC message sent by the MN node through the SN node (such as the RRC connection release message, or the RRC reconfiguration message, etc.) during the running of the first timer, and the terminal device performs the CHO condition evaluation If it is determined that the terminal device meets the handover trigger condition of at least one target cell, the terminal agency selects a target cell for conditional handover.
  • the terminal device can stop running the first timer.
  • An optional detailed processing flow of the cell handover method provided in the embodiment of the present application, as shown in FIG. 11, includes the following steps:
  • Step S501 The terminal device receives the CHO configuration sent by the network device.
  • the terminal device works in a dual connection mode, such as MR-DC mode; the terminal device is a terminal device in a connected state.
  • the configuration of the CHO may include the configuration of at least one target cell and the handover trigger condition of the at least one target cell.
  • step S502 the terminal equipment performs MCG radio link monitoring and CHO condition evaluation.
  • the terminal device performs CHO condition evaluation for the terminal device to determine or judge whether the handover trigger condition is satisfied.
  • Step S503 If the MCG radio link failure occurs at the same time when the handover trigger condition of at least one target cell is met, the terminal device sends a first message to the network device.
  • the network device sends configuration information to the terminal device through RRC signaling, and the configuration information is used to indicate that the MCG radio link failure occurs at the same time as the handover trigger condition of at least one target cell is met.
  • the terminal device sends a first message to the network device to inform the network device that the MCG radio link failure occurs; the terminal device may also start the first timer.
  • the first message may be MCG radio link failure
  • the first timer may be a T316 timer.
  • the terminal device stops judging whether the handover trigger condition is satisfied.
  • Step S504 During the operation of the first timer, if the terminal device receives the RRC message sent by the network device, the terminal device stops running the first timer.
  • the RRC message may be an RRC connection release message or an RRC reconfiguration message.
  • the terminal device in the case of MCG radio link failure, the terminal device first determines whether the handover trigger condition (ie, CHO condition evaluation) is met, which can effectively avoid sending the MCGFailureInformation message to the network device and start the first timing
  • the RRC connection re-establishment process introduced by the first timer timeout reduces the interruption time of data transmission and improves the performance of data transmission.
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • Another optional processing procedure of the cell handover method provided by the embodiment of the present application, as shown in FIG. 12, includes the following steps:
  • Step S801 The network device sends instruction information, the instruction information is used to instruct the terminal device to perform the handover to the handover when the primary cell group radio link failure occurs at the same time when the terminal equipment meets the handover trigger condition. Trigger conditional handover of the target cell corresponding to the condition, or the terminal device sends the first message.
  • the indication information is carried in an RRC message.
  • An optional structural schematic diagram of the terminal device 600 includes:
  • the processing unit 601 is configured to determine whether the handover trigger condition is satisfied when the terminal device in the first connected state has a radio link failure in the primary cell group; perform conditional handover or report the primary cell group radio link based on the determined result Failure information.
  • the processing unit 601 is further configured to perform the switching to the handover if the radio link failure of the terminal device in the primary cell group occurs at the same time when the terminal device satisfies the handover trigger condition. Trigger the conditional handover of the target cell corresponding to the condition.
  • the terminal device when the primary cell radio link failure occurs at the same time when the handover trigger condition is met, the terminal device performs conditional handover to the target cell corresponding to the handover trigger condition according to an instruction sent by the network device The information is determined or agreed upon by agreement.
  • the processing unit 601 is further configured to prohibit sending the first message.
  • the processing unit 601 is further configured to prohibit starting the first timer.
  • the processing unit 601 is configured to send the first message when a radio link failure occurs in the primary cell group.
  • the processing unit 601 is further configured to start a first timer.
  • the processing unit 601 is further configured to perform conditional handover to the target cell corresponding to the handover trigger condition if the terminal device satisfies the handover trigger condition during the running of the first timer.
  • the terminal device when the primary cell group radio link failure occurs at the same time when the terminal device satisfies the handover trigger condition, the terminal device sends the first message as determined by the instruction information of the network device or agreed by the protocol .
  • the indication information is carried in an RRC message.
  • the processing unit 601 is further configured to stop running the first timer.
  • the processing unit 601 is configured to send the first message if the radio link failure of the terminal device in the primary cell group occurs at the same time when the terminal device satisfies the handover trigger condition.
  • the processing unit 601 is configured to stop determining whether the handover trigger condition is satisfied.
  • the processing unit 601 is further configured to start a first timer.
  • the processing unit 601 is further configured to stop running the first timer if the terminal device receives an RRC message during the running of the first timer.
  • the first timer includes a T316 timer.
  • the first message includes a MCGFailureInformation message of primary cell group failure information.
  • the first connection state includes a dual connection state.
  • An optional structural schematic diagram of the network device 900 includes:
  • the sending unit 901 is configured to send instruction information, the instruction information being used to instruct the terminal device to execute the notification to the Conditional handover of the target cell corresponding to the handover trigger condition, or the terminal device sends a first message.
  • the indication information is carried in an RRC message.
  • An embodiment of the present application further provides a terminal device, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to execute the above-mentioned terminal device when the computer program is running. Steps of the cell handover method.
  • An embodiment of the present application also provides a terminal device, including a processor and a memory for storing a computer program that can run on the processor, where the processor is used to execute the computer program executed by the above-mentioned network device when the computer program is running. Steps of the cell handover method.
  • An embodiment of the present application also provides a chip, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the cell handover method performed by the terminal device.
  • An embodiment of the present application also provides a chip, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the cell handover method performed by the network device.
  • An embodiment of the present application also provides a storage medium storing an executable program, and when the executable program is executed by a processor, the above-mentioned cell handover method executed by the terminal device is implemented.
  • An embodiment of the present application further provides a storage medium storing an executable program, and the executable program is executed by a processor to implement the cell handover method executed by the network device.
  • An embodiment of the present application also provides a storage medium storing an executable program, and when the executable program is executed by a processor, the above-mentioned cell handover method executed by the terminal device is implemented.
  • An embodiment of the present application further provides a storage medium storing an executable program, and the executable program is executed by a processor to implement the cell handover method executed by the network device.
  • the embodiments of the present application also provide a computer program product, including computer program instructions, which cause a computer to execute the cell handover method performed by the above terminal device.
  • the embodiments of the present application also provide a computer program product, including computer program instructions, which cause a computer to execute the cell handover method executed by the above-mentioned network device.
  • the embodiments of the present application also provide a computer program product, including computer program instructions, which cause a computer to execute the cell handover method performed by the above terminal device.
  • the embodiments of the present application also provide a computer program product, including computer program instructions, which cause a computer to execute the cell handover method executed by the above-mentioned network device.
  • the embodiments of the present application also provide a computer program that enables a computer to execute the cell handover method performed by the terminal device described above.
  • An embodiment of the present application also provides a computer program that enables a computer to execute the cell handover method performed by the above-mentioned network device.
  • the electronic device 700 includes: at least one processor 701, a memory 702, and at least one network interface 704.
  • the various components in the electronic device 700 are coupled together through the bus system 705.
  • the bus system 705 is used to implement connection and communication between these components.
  • the bus system 705 also includes a power bus, a control bus, and a status signal bus.
  • various buses are marked as the bus system 705 in FIG. 15.
  • the memory 702 may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory.
  • non-volatile memory can be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), and electrically erasable Programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), magnetic random access memory (FRAM, ferromagnetic random access memory), flash memory (Flash Memory), magnetic surface memory, optical disk, or CD-ROM (CD) -ROM, Compact Disc Read-Only Memory); Magnetic surface memory can be disk storage or tape storage.
  • the volatile memory may be a random access memory (RAM, Random Access Memory), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • SSRAM synchronous static random access memory
  • Synchronous Static Random Access Memory Synchronous Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • SDRAM Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM synchronous connection dynamic random access memory
  • DRRAM Direct Rambus Random Access Memory
  • the memory 702 described in the embodiment of the present application is intended to include, but is not limited to, these and any other suitable types of memory.
  • the memory 702 in the embodiment of the present application is used to store various types of data to support the operation of the electronic device 700.
  • Examples of such data include: any computer program used to operate on the electronic device 700, such as the application program 7022.
  • the program for implementing the method of the embodiment of the present application may be included in the application program 7022.
  • the method disclosed in the foregoing embodiment of the present application may be applied to the processor 701 or implemented by the processor 701.
  • the processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 701 or instructions in the form of software.
  • the aforementioned processor 701 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and the like.
  • the processor 701 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present application.
  • the general-purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a storage medium, and the storage medium is located in the memory 702.
  • the processor 701 reads the information in the memory 702 and completes the steps of the foregoing method in combination with its hardware.
  • the electronic device 700 may be used by one or more application specific integrated circuits (ASIC, Application Specific Integrated Circuit), DSP, programmable logic device (PLD, Programmable Logic Device), and complex programmable logic device (CPLD). , Complex Programmable Logic Device), FPGA, general-purpose processor, controller, MCU, MPU, or other electronic components to implement the foregoing method.
  • ASIC Application Specific Integrated Circuit
  • DSP digital signal processor
  • PLD programmable logic device
  • CPLD complex programmable logic device
  • FPGA field-programmable Logic Device
  • controller MCU
  • MPU or other electronic components to implement the foregoing method.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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Abstract

本申请公开了一种小区切换方法，包括：处于第一连接状态的终端设备在主小区组发生无线链路失败的情况下，所述终端设备确定是否满足切换触发条件；所述终端设备基于所确定的结果执行条件切换或上报主小区组无线链路失败信息。本申请还公开了一种电子设备及存储介质。

Description

一种小区切换方法、电子设备及存储介质
技术领域k
本申请涉及无线通信技术领域，尤其涉及一种小区切换方法、电子设备及存储介质。
背景技术
在无线通信系统同时配置条件切换(Conditional HandOver，CHO)和主小区组失败恢复(Master Cell Group failure recovery，MCG failure recovery)的场景下，若终端设备在MCG发生无线链路失败，终端设备如何进行操作尚未被明确。
发明内容
本申请实施例提供一种小区切换方法、电子设备及存储介质，明确了在无线通信系统同时配置CHO和MCG failure recovery的场景下，若终端设备在MCG发生无线链路失败，终端设备如何进行操作。
第一方面，本申请实施例提供一种小区切换方法，包括：处于第一连接状态的终端设备在主小区组发生无线链路失败的情况下，所述终端设备确定是否满足切换触发条件；所述终端设备基于所确定的结果执行条件切换或上报主小区组无线链路失败信息。
第二方面，本申请实施例提供一种小区切换方法，包括：网络设备发送指示信息，所述指示信息用于指示终端设备在主小区组无线链路失败与所述终端设备满足切换触发条件发生在同一时刻时，所述终端设备执行向所述切换触发条件对应的目标小区的条件切换、或者所述终端设备发送第一消息。
第三方面，本申请实施例提供一种终端设备，所述终端设备包括：处理单元，配置为处于第一连接状态的终端设备在主小区组发生无线链路失败的情况下，确定是否满足切换触发条件；基于所确定的结果执行条件切换或上报主小区组无线链路失败信息。
第四方面，本申请实施例提供一种网络设备，所述网络设备包括：
发送单元，配置为发送指示信息，所述指示信息用于指示终端设备在主小区组无线链路失败与所述终端设备满足切换触发条件发生在同一时刻时，所述终端设备执行向所述切换触发条件对应的目标小区的条件切换、或者所述终端设备发送第一消息。
第五方面，本申请实施例提供一种终端设备，包括处理器和用于存储能够在处理器上运行的计算机程序的存储器，其中，所述处理器用于运行所述计算机程序时，执行上述终端设备执行的小区切换方法的步骤。
第六方面，本申请实施例提供一种终端设备，包括处理器和用于存储能够在处理 器上运行的计算机程序的存储器，其中，所述处理器用于运行所述计算机程序时，执行上述网络设备执行的小区切换方法的步骤。
第七方面，本申请实施例提供一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的终端设备执行上述终端设备执行的小区切换方法。
第八方面，本申请实施例提供一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的网络设备执行上述终端设备执行的小区切换方法。
第九方面，本申请实施例提供一种存储介质，存储有可执行程序，所述可执行程序被处理器执行时，实现上述终端设备执行的小区切换方法。
第十方面，本申请实施例提供一种存储介质，存储有可执行程序，所述可执行程序被处理器执行时，实现上述网络设备执行的小区切换方法。
第十一方面，本申请实施例提供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终端设备执行的小区切换方法。
第十二方面，本申请实施例提供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网络设备执行的小区切换方法。
第十三方面，本申请实施例提供一种计算机程序，所述计算机程序使得计算机执行上述终端设备执行的小区切换方法。
第十四方面，本申请实施例提供一种计算机程序，所述计算机程序使得计算机执行上述终网络设备执行的小区切换方法。
本申请实施例提供的小区切换方法、电子设备设备及存储介质，包括：处于第一连接状态的终端设备在主小区组发生无线链路失败的情况下，所述终端设备确定是否满足切换触发条件；所述终端设备基于所确定的结果执行条件切换或上报主小区组无线链路失败信息。如此，在发生MCG无线链路失败的情况下，终端设备优先确定是否满足切换触发条件，能够有效的避免向网络设备发送MCGFailureInformation消息并启动第一定时器的情况下，第一定时器超时引入的RRC连接重建过程，减小数据传输的中断时间，提高数据传输的性能。
附图说明
图1为本申请一种载波聚合的示意图；
图2为本申请另一种载波聚合的示意图；
图3为本申请EN-DC的网络部署和组网架构示意图；
图4a为本申请EN-DC的通信场景3A示意图；
图4b为本申请EN-DC的通信场景3示意图；
图5a为本申请一种双连接模式的网络架构示意图；
图5b为本申请另一种双连接模式的网络架构示意图；
图5c为本申请又一种双连接模式的网络架构示意图；
图6为本申请CHO的切换流程示意图；
图7为本申请通信系统的结构示意图；
图8为本申请实施例小区切换方法的一种可选处理流程示意图；
图9为本申请实施例小区切换方法的一种可选详细处理流程示意图；
图10为本申请实施例小区切换方法的另种可选详细处理流程示意图；
图11为本申请实施例小区切换方法的又一种可选详细处理流程示意图；
图12为本申请实施例小区切换方法的另一种可选处理流程示意图；
图13为本申请实施例终端设备的一种可选组成结构示意图；
图14为本申请实施例网络设备的一种可选组成结构示意图；
图15为本申请实施例电子设备的硬件组成结构示意图。
具体实施方式
为了能够更加详尽地了解本申请实施例的特点和技术内容，下面结合附图对本申请实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本申请实施例。
在对本申请实施例提供的连接重建方法进行详细说明之前，进行如下简要说明。
当前，随着人们对速率、延迟、高速移动性、能效的追求以及未来生活中业务的多样性和复杂性，3GPP国际标准组织开始研发5G。5G的主要应用场景为：增强移动超宽带(Enhance Mobile Broadband，eMBB)、低时延高可靠通信(Ultra Reliable Low Latency Communications，URLLC)、和大规模机器类通信(Massive Machine Type Communication，mMTC)。
eMBB仍然以用户获得多媒体内容、服务和数据为目标，其需求增长十分迅速。另一方面，由于eMBB可能部署在不同的场景中，便如室内，市区，农村等，其能力和需求的差别也比较大，所以不能一概而论，必须结合具体的部署场景详细分析。URLLC的典型应用包括：工业自动化，电力自动化，远程医疗操作(手术)，交通安全保障等。mMTC的典型特点包括：高连接密度，小数据量，时延不敏感业务，模块的低成本和长使用寿命等。
载波聚合(Carrier Aggregation，CA)技术可满足中终端设备高速率的要求。一种载波聚合的示意图，如图1所示；另一种载波聚合的示意图，如图2所示；载波聚合是通过联合调度和使用多个成员载波(Component Carrier，CC)上的资源，使得NR系统可以支持更大的带宽，从而能够实现更高的系统峰值速率。根据所聚合载波在频谱上的连续性可以分为：连续性载波聚合和非连续性载波聚合；根据聚合的载波所在的band是否相同可以分为：Intra-band载波聚合和inter-band载波聚合。
聚合中的载波中存在唯一的一个主载波(Primary Component Carrier，PCC)，PCC 提供无线资源控制(Radio Resource Control，RRC)信令连接、非接入层(Non-Access Stratum，NAS)功能、以及安全等。物理上行控制信道(Physical Uplink Control Channel，PUCCH)在PCC上且只在PCC上存在。聚合中的载波中还存在辅载波(Secondary Component Carrier，SCC)，SCC只提供额外的无线资源。PCC和SCC统称为服务小区。标准中规定聚合的载波最多支持5个，即聚合后的最大带宽为100MHZ，并且聚合载波属于同一个网络设备。所有的聚合载波使用相同的小区无线网络临时标识(Cell Radio Network Temporary Identifier，C-RNTI)，网络设备实现C-RNTI在每个载波所在的小区不发生冲突。由于支持不对称载波聚合和对称载波聚合两种，所以要求聚合的载波一定有下行，可以没有上行。而且对于主载波小区来说一定有本小区的物理下行控制信道(Physical Downlink Control Channel，PDCCH)和PUCCH，而且只有主载波小区有PUCCH，其他辅载波小区可能有PDCCH。
在NR早期部署时，完整的NR覆盖很难获取，所以典型的网络覆盖是广域的长期演进(Long Term Evolution，LTE)覆盖和新无线(New Ration，NR)的孤岛覆盖模式。而且大量的LTE部署在6GHz以下，可用于5G的6GHz以下频谱很少。所以NR必须研究6GHz以上的频谱应用，而高频段覆盖有限、信号衰落快。同时为了保护移动运营商前期在LTE投资，提出了LTE和NR之间tight interworking的工作模式。
为了能够尽快实现5G网络部署和商业应用，3GPP在2017年12底前首先完成第一个5G版本，LTE-NR Dual Connectivity，简称EN-DC。EN-DC的网络部署和组网架构如图3所示：这里，LTE作为主节点(Master Node，MN)，NR作为辅节点(Secondary Node，SN)。其中，EN-DC的通信场景包括如图4a所示的场景3A和如图4b所述的场景3两种。
其中，MN节点主要的RRC控制功能以及通向CN的控制面，SN节点可以配置辅助的信令，例如SRB3，主要提供数据传输功能。MN节点的主小区仍然为PCell，SN的主小区称为主辅小区(Primary Secondary Cell，PSCell)。
在R15后期，将支持其他DC模式，其中，NE-DC模式的网络架构示意图，如图5a所示；5GC-EN-DC模式的网络架构示意图，如图5b所示；NR-DC模式的网络架构示意图，如图5c所示。对于EN-DC，接入网络连接的核心网是EPC，而其他DC模式连接的核心网是5GC。
针对高速移动场景和高频部署场景存在频繁切换以及切换容易失败的问题，3GPP当前正在讨论为LTE和NR系统引入CHO。CHO的切换流程，如图6所示，终端设备根据源网络设备发送的目标小区的配置信息和测量配置进行小区测量、配置和报告；源网络设备和目标网络设备进行切换准备；在终端设备判断满足针对目标小区的CHO的切换执行条件的情况下，终端设备按照预先配置的CHO命令(command)执行向目标小区的切换(如触发随机接入过程和发送切换完成消息)，进而建立与目标网络设备的连接。在CHO过程中，通过为终端设备提前配置CHO command，避免了由于终端设备高速移动进入覆盖性差的区域，导致来不及或无法发送测量上报和无法接收切换命令的 问题。其中，CHO command包括目标小区的配置信息和CHO的切换执行条件配置；CHO的切换执行条件配置由源网络设备确定，源网络设备将确定的CHO的切换执行条件配置通过无线资源控制(Radio Resource Control，RRC)消息发送至终端设备。
R15协议中，如果终端设备判决在MR-DC中的MCG发生无线链路失败，终端设备会触发RRC连接重建过程，无论SCG质量好坏。R16做了进一步增强，当MCG发生无线链路失败时，终端设备通过SN节点向MN上报MCGFailureInformation信息，同时启动T316定时器。如果T316定时器超时前，终端设备收到MN节点通过SN节点发送的RRC消息(例如RRC连接释放消息，或者RRC重配置消息(包含切换命令))，则终端设备停止T316定时器。如果T316定时器超时，则终端设备触发RRC重建过程。
在版本16(Rel-16)中同时引入了条件切换和MCG failure recovery，然而如何处理条件切换和MCG failure recovery条件切换和MCG failure recovery共存的问题需要解决。一种方案是不允许在T316运行期间执行条件切换，但是禁止执行条件切换可能导致T316超时而进入连接重建过程，容易造成更大的数据传输的中断，影响用户体验。
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、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)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、非授权频段上的LTE(LTE-based access to unlicensed spectrum，LTE-U)系统、非授权频段上的NR(NR-based access to unlicensed spectrum，NR-U)系统、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、无线局域网(wireless local area networks，WLAN)、无线保真(wireless fidelity，WiFi)、下一代通信系统或其他通信系统等。
本申请实施例描述的系统架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
本申请实施例中涉及的网络设备，可以是普通的基站(如NodeB或eNB或者gNB)、新无线控制器(new radio controller，NR controller)、集中式网元(centralized unit)、新无线基站、射频拉远模块、微基站、中继(relay)、分布式网元(distributed unit)、接收点(transmission reception point，TRP)、传输点(transmission point，TP)或者任何其它设备。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。为方便描述，本申请所有实施例中，上述为终端设备提供无线通信功能的装置统称为网络设备。
在本申请实施例中，终端设备可以是任意的终端，比如，终端设备可以是机器类通 信的用户设备。也就是说，该终端设备也可称之为用户设备UE、移动台(mobile station，MS)、移动终端(mobile terminal)、终端(terminal)等，该终端设备可以经无线接入网(radio access network，RAN)与一个或多个核心网进行通信，例如，终端设备可以是移动电话(或称为“蜂窝”电话)、具有移动终端的计算机等，例如，终端设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。本申请实施例中不做具体限定。
可选的，网络设备和终端设备可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和人造卫星上。本申请的实施例对网络设备和终端设备的应用场景不做限定。
可选的，网络设备和终端设备之间以及终端设备和终端设备之间可以通过授权频谱(licensed spectrum)进行通信，也可以通过非授权频谱(unlicensed spectrum)进行通信，也可以同时通过授权频谱和非授权频谱进行通信。网络设备和终端设备之间以及终端设备和终端设备之间可以通过7吉兆赫(gigahertz，GHz)以下的频谱进行通信，也可以通过7GHz以上的频谱进行通信，还可以同时使用7GHz以下的频谱和7GHz以上的频谱进行通信。本申请的实施例对网络设备和终端设备之间所使用的频谱资源不做限定。
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)，以及车辆间(vehicle to vehicle，V2V)通信等，本申请实施例也可以应用于这些通信系统。
示例性的，本申请实施例应用的通信系统100，如图7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。可选地，该网络设备110可以是GSM系统或CDMA系统中的基站(Base Transceiver Station，BTS)，也可以是WCDMA系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者是云无线接入网络(Cloud Radio Access Network，CRAN)中的无线控制器，或者该网络设备可以为移动交换中心、中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器、5G网络中的网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)中的网络设备等。
该通信系统100还包括位于网络设备110覆盖范围内的至少一个终端设备120。作为在此使用的“终端设备”包括但不限于经由有线线路连接，如经由公共交换电话网络(Public Switched Telephone Networks，PSTN)、数字用户线路(Digital Subscriber Line，DSL)、数字电缆、直接电缆连接；和/或另一数据连接/网络；和/或经由无线接口，如，针对蜂窝网络、无线局域网(Wireless Local Area Network，WLAN)、诸如DVB-H网络 的数字电视网络、卫星网络、AM-FM广播发送器；和/或另一终端设备的被设置成接收/发送通信信号的装置；和/或物联网(Internet of Things，IoT)设备。被设置成通过无线接口通信的终端设备可以被称为“无线通信终端”、“无线终端”或“移动终端”。移动终端的示例包括但不限于卫星或蜂窝电话；可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(Personal Communications System，PCS)终端；可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(Global Positioning System，GPS)接收器的PDA；以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。终端设备可以指接入终端、用户设备(User Equipment，UE)、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。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、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、5G网络中的终端设备或者未来演进的PLMN中的终端设备等。
可选地，终端设备120之间可以进行终端直连(Device to Device，D2D)通信。
可选地，5G系统或5G网络还可以称为新无线(New Radio，NR)系统或NR网络。
图7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7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。
本申请实施例提供的小区切换方法的一种可选处理流程，如图8所示，包括以下步骤：
步骤S201，处于第一连接状态的终端设备在主小区组发生无线链路失败的情况下，所述终端设备确定是否满足切换触发条件。
在一些实施例中，所述第一连接状态可以是双连接状态。
步骤S202，所述终端设备基于所确定的结果执行条件切换或上报主小区组无线链路失败信息。
在一些实施例中，若双连接状态下的终端设备(如处于MR-DC状态下的终端设备)在发生MCG无线链路失败与满足至少一个切换触发条件发生在同一时刻的情况下，终 端设备不向网络设备发送第一消息(如MCGFailureInformation消息)，终端设备执行向所述切换触发条件对应的目标小区的条件切换。在该场景下，终端设备也不启动第一定时器；所述第一定时器可以是T316定时器。
在具体实施时，终端设备可以接收网络设备发送的指示信息，所述指示信息用于指示终端设备在MCG无线链路失败与满足切换触发条件发生在同一时刻的情况下，执行向所述切换触发条件对应的目标小区的条件切换；在该场景下，终端设备根据网络设备发送的指示信息，向所述切换触发条件对应的目标小区的条件切换。或者，终端设备也可以根据协议约定，在MCG无线链路失败与满足切换触发条件发生在同一时刻的情况下，执行向所述切换触发条件对应的目标小区的条件切换。其中，所述指示信息可以携带于RRC消息中。
若双连接状态下的终端设备(如处于MR-DC状态下的终端设备)在发生MCG无线链路失败与满足至少一个切换触发条件发生在同一时刻的情况下，终端设备不执行向所述切换触发条件对应的目标小区的条件切换，而是向网络设备发送第一消息(如MCGFailureInformation消息)，以告知网络设备主小区无线链路失败；终端设备也可以启动第一定时器，所述第一定时器可以是T316定时器。若在第一定时器运行期间，终端设备接收到网络设备发送的RRC消息(如RRC连接释放消息，或者RRC重配置消息等)，则终端设备停止运行第一定时器。
在具体实施时，终端设备可以接收网络设备发送的第指示信息，所述指示信息用于指示在MCG无线链路失败与满足切换触发条件发生在同一时刻的情况下，执行向网络设备发送第一消息的操作。在该场景下，终端设备根据网络设备发送的指示信息，向网络设备发送第一消息。或者，终端设备也可以根据协议约定，在MCG无线链路失败与满足切换触发条件发生在同一时刻的情况下，向网络设备发送第一消息。其中，所述指示信息可以携带于RRC消息中。
在另一些实施例中，若双连接状态下的终端设备(如处于MR-DC状态下的终端设备)在发生MCG无线链路失败的情况下，终端设备向网络设备发送第一消息(如MCGFailureInformation消息)，终端设备也启动第一定时器(如T316定时器)，且终端设备继续执行CHO条件评估。那么，在第一定时器运行期间，终端设备未接收到MN节点通过SN节点发送的RRC消息，且满足至少一个目标小区的切换触发条件，终端设备立即执行向该目标小区执行条件切换，并停止运行第一定时器。
在一些实施例中，本申请实施例提供的小区切换方法还可以包括：
终端设备接收网络设备发送的CHO的配置信息，所述配置信息可以包括至少一个目标小区的配置，以及所述至少一个目标小区的切换触发条件。
在一些实施例中，本申请实施例提供的小区切换方法还可以包括：
终端设备执行MCG的无线链路检测和CHO的条件评估。
下面基于不同的情况对本申请实施例提供的小区切换方法进行详细说明。
本申请实施例提供的小区切换方法的又一种可选详细处理流程，如图9所示，包括 以下步骤：
步骤S301，终端设备接收网络设备发送的CHO的配置。
在一些实施例中，所述终端设备工作在双连接模式，如MR-DC模式；终端设备为连接态的终端设备。
在一些实施例中，所述CHO的配置可以包括至少一个目标小区的配置，以及所述至少一个目标小区的切换触发条件。
步骤S302，终端设备执行MCG无线链路监测和CHO条件评估。
在一些实施例中，终端设备执行CHO条件评估可以为终端设备确定或判断是否满足切换触发条件。
步骤S303，若发生MCG无线链路失败与满足至少一个目标小区的切换触发条件发生在同一时刻，则终端设备根据网络设备的配置选择一个目标小区进行条件切换。
在一些实施例中，网络设备通过RRC信令向终端设备发送配置信息，所述配置信息用于指示发生MCG无线链路失败与满足至少一个目标小区的切换触发条件发生在同一时刻的情况下，终端设备执行条件切换。在该场景下，终端设备不向网络设备发送第一消息，即不告知网络设备发生MCG无线链路失败，也不启动第一定时器。其中，所述第一消息可以是MCG无线链路失败，所述第一定时器可以是T316定时器。
本申请实施例提供的小区切换方法的另一种可选详细处理流程，如图10所示，包括以下步骤：
步骤S401，终端设备接收网络设备发送的CHO的配置。
在一些实施例中，所述终端设备工作在双连接模式，如MR-DC模式；终端设备为连接态的终端设备。
在一些实施例中，所述CHO的配置可以包括至少一个目标小区的配置，以及所述至少一个目标小区的切换触发条件。
步骤S402，终端设备执行MCG无线链路监测和CHO条件评估。
在一些实施例中，终端设备执行CHO条件评估可以为终端设备确定或判断是否满足切换触发条件。
步骤S403，若发生MCG无线链路失败，则终端设备发送第一消息，继续执行CHO条件评估，并启动第一定时器。
在一些实施例中，若发生MCG无线链路失败，则终端设备向网络设备发送第一消息，以告知网络设备发生MCG无线链路失败；其中，所述第一消息可以是MCG无线链路失败，所述第一定时器可以是T316定时器。
步骤S404，若在第一定时器运行期间，终端设备未通过SN节点接收到MN节点发送的RRC消息(如RRC连接释放消息，或者RRC重配置消息等)，且终端设备在执行CHO条件评估时确定终端设备满足至少一个目标小区的切换触发条件，则终端社诶选择一个目标小区进行条件切换。
在该场景下，终端设备可以停止运行第一定时器。
本申请实施例提供的小区切换方法的一种可选详细处理流程，如图11所示，包括以下步骤：
步骤S501，终端设备接收网络设备发送的CHO的配置。
在一些实施例中，所述终端设备工作在双连接模式，如MR-DC模式；终端设备为连接态的终端设备。
在一些实施例中，所述CHO的配置可以包括至少一个目标小区的配置，以及所述至少一个目标小区的切换触发条件。
步骤S502，终端设备执行MCG无线链路监测和CHO条件评估。
在一些实施例中，终端设备执行CHO条件评估可以为终端设备确定或判断是否满足切换触发条件。
步骤S503，若发生MCG无线链路失败与满足至少一个目标小区的切换触发条件发生在同一时刻，则终端设备向网络设备发送第一消息。
在一些实施例中，网络设备通过RRC信令向终端设备发送配置信息，所述配置信息用于指示发生MCG无线链路失败与满足至少一个目标小区的切换触发条件发生在同一时刻的情况下，终端设备向网络设备发送第一消息，以告知网络设备发生MCG无线链路失败；终端设备也可以启动第一定时器。其中，所述第一消息可以是MCG无线链路失败，所述第一定时器可以是T316定时器。
在一些实施例中，所述终端设备停止判断是否满足切换触发条件。
步骤S504，在所述第一定时器运行期间，若终端设备接收到网络设备发送的RRC消息，则终端设备停止运行所述第一定时器。
在一些实施例中，所述RRC消息可以是RRC连接释放消息，或者RRC重配置消息。
本申请上述各实施例中，在发生MCG无线链路失败的情况下，终端设备优先确定是否满足切换触发条件(即CHO条件评估)，能够有效的避免向网络设备发送MCGFailureInformation消息并启动第一定时器的情况下，第一定时器超时引入的RRC连接重建过程，减小数据传输的中断时间，提高数据传输的性能。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
本申请实施例提供的小区切换方法的另一种可选处理流程，如图12所示，包括以下步骤：
步骤S801，网络设备发送指示信息，所述指示信息用于指示终端设备在主小区组无线链路失败与所述终端设备满足切换触发条件发生在同一时刻时，所述终端设备执行向所述切换触发条件对应的目标小区的条件切换、或者所述终端设备发送第一消息。
在一些实施例中，所述指示信息携带于RRC消息中。
为实现上述小区切换方法，本申请实施例提供一种终端设备，所述终端设备600 的一种可选组成结构示意图，如图13所示，包括：
处理单元601，配置为处于第一连接状态的终端设备在主小区组发生无线链路失败的情况下，确定是否满足切换触发条件；基于所确定的结果执行条件切换或上报主小区组无线链路失败信息。
在一些实施例中，所述处理单元601，还配置为若所述终端设备在主小区组发生无线链路失败与所述终端设备满足所述切换触发条件发生在同一时刻，执行向所述切换触发条件对应的目标小区的条件切换。
在一些实施例中，所述终端设备在主小区无线链路失败与满足所述切换触发条件发生在同一时刻时，执行向所述切换触发条件对应的目标小区的条件切换根据网络设备发送的指示信息确定，或者由协议约定。
在一些实施例中，所述处理单元601，还配置为禁止发送第一消息。
在一些实施例中，所述处理单元601，还配置为禁止启动第一定时器。
在一些实施例中，所述处理单元601，配置为所述终端设备在主小区组发生无线链路失败时，发送第一消息。
在一些实施例中，所述处理单元601，还配置为启动第一定时器。
在一些实施例中，所述处理单元601，还配置为在第一定时器运行期间，若所述终端设备满足所述切换触发条件，执行向所述切换触发条件对应的目标小区的条件切换。
在一些实施例中，所述终端设备在主小区组无线链路失败与所述终端设备满足所述切换触发条件发生在同一时刻时，发送第一消息根据网络设备的指示信息确定或由协议约定。
在一些实施例中，所述指示信息携带于RRC消息中。
在一些实施例中，所述处理单元601，还配置为停止运行所述第一定时器。
在一些实施例中，所述处理单元601，配置为若所述终端设备在主小区组发生无线链路失败与所述终端设备满足所述切换触发条件发生在同一时刻，发送第一消息。
在一些实施例中，所述处理单元601，配置为停止确定是否满足所述切换触发条件。
在一些实施例中，所述处理单元601，还配置为启动第一定时器。
在一些实施例中，所述处理单元601，还配置为在第一定时器运行期间，若所述终端设备接收到RRC消息，则所述终端设备停止运行所述第一定时器。
在一些实施例中，所述第一定时器包括T316定时器。
在一些实施例中，所述第一消息包括主小区组失败信息MCGFailureInformation消息。
在一些实施例中，所述第一连接状态包括双连接状态。
为实现上述小区切换方法，本申请实施例提供一种终端设备，所述网络设备900的一种可选组成结构示意图，如图14所示，包括：
发送单元901，配置为发送指示信息，所述指示信息用于指示终端设备在主小区组无线链路失败与所述终端设备满足切换触发条件发生在同一时刻时，所述终端设备执行 向所述切换触发条件对应的目标小区的条件切换、或者所述终端设备发送第一消息。
在一些实施例中，所述指示信息携带于RRC消息中。
本申请实施例还提供一种终端设备，包括处理器和用于存储能够在处理器上运行的计算机程序的存储器，其中，所述处理器用于运行所述计算机程序时，执行上述终端设备执行的小区切换方法的步骤。
本申请实施例还提供一种终端设备，包括处理器和用于存储能够在处理器上运行的计算机程序的存储器，其中，所述处理器用于运行所述计算机程序时，执行上述网络设备执行的小区切换方法的步骤。
本申请实施例还提供一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行上述终端设备执行的小区切换方法。
本申请实施例还提供一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行上述网络设备执行的小区切换方法。
本申请实施例还提供一种存储介质，存储有可执行程序，所述可执行程序被处理器执行时，实现上述终端设备执行的小区切换方法。
本申请实施例还提供一种存储介质，存储有可执行程序，所述可执行程序被处理器执行时，实现上述网络设备执行的小区切换方法。
本申请实施例还提供一种存储介质，存储有可执行程序，所述可执行程序被处理器执行时，实现上述终端设备执行的小区切换方法。
本申请实施例还提供一种存储介质，存储有可执行程序，所述可执行程序被处理器执行时，实现上述网络设备执行的小区切换方法。
本申请实施例还提供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终端设备执行的小区切换方法。
本申请实施例还提供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网络设备执行的小区切换方法。
本申请实施例还提供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终端设备执行的小区切换方法。
本申请实施例还提供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网络设备执行的小区切换方法。
本申请实施例还提供一种计算机程序，所述计算机程序使得计算机执行上述终端设备执行的小区切换方法。
本申请实施例还提供一种计算机程序，所述计算机程序使得计算机执行上述网络设备执行的小区切换方法。
图15是本申请实施例的终端设备的硬件组成结构示意图，电子设备700包括：至少一个处理器701、存储器702和至少一个网络接口704。电子设备700中的各个组件通过总线系统705耦合在一起。可理解，总线系统705用于实现这些组件之间的连接通信。总线系统705除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。 但是为了清楚说明起见，在图15中将各种总线都标为总线系统705。
可以理解，存储器702可以是易失性存储器或非易失性存储器，也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ROM、可编程只读存储器(PROM，Programmable Read-Only Memory)、可擦除可编程只读存储器(EPROM，Erasable Programmable Read-Only Memory)、电可擦除可编程只读存储器(EEPROM，Electrically Erasable Programmable Read-Only Memory)、磁性随机存取存储器(FRAM，ferromagnetic random access memory)、快闪存储器(Flash Memory)、磁表面存储器、光盘、或只读光盘(CD-ROM，Compact Disc Read-Only Memory)；磁表面存储器可以是磁盘存储器或磁带存储器。易失性存储器可以是随机存取存储器(RAM，Random Access Memory)，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(SRAM，Static Random Access Memory)、同步静态随机存取存储器(SSRAM，Synchronous Static Random Access Memory)、动态随机存取存储器(DRAM，Dynamic Random Access Memory)、同步动态随机存取存储器(SDRAM，Synchronous Dynamic Random Access Memory)、双倍数据速率同步动态随机存取存储器(DDRSDRAM，Double Data Rate Synchronous Dynamic Random Access Memory)、增强型同步动态随机存取存储器(ESDRAM，Enhanced Synchronous Dynamic Random Access Memory)、同步连接动态随机存取存储器(SLDRAM，SyncLink Dynamic Random Access Memory)、直接内存总线随机存取存储器(DRRAM，Direct Rambus Random Access Memory)。本申请实施例描述的存储器702旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例中的存储器702用于存储各种类型的数据以支持电子设备700的操作。这些数据的示例包括：用于在电子设备700上操作的任何计算机程序，如应用程序7022。实现本申请实施例方法的程序可以包含在应用程序7022中。
上述本申请实施例揭示的方法可以应用于处理器701中，或者由处理器701实现。处理器701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，上述方法的各步骤可以通过处理器701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701可以是通用处理器、数字信号处理器(DSP，Digital Signal Processor)，或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。处理器701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。软件模块可以位于存储介质中，该存储介质位于存储器702，处理器701读取存储器702中的信息，结合其硬件完成前述方法的步骤。
在示例性实施例中，电子设备700可以被一个或多个应用专用集成电路(ASIC，Application Specific Integrated Circuit)、DSP、可编程逻辑器件(PLD，Programmable Logic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、FPGA、 通用处理器、控制器、MCU、MPU、或其他电子元件实现，用于执行前述方法。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
应理解，本申请中术语“系统”和“网络”在本文中常被可互换使用。本申请中术语“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，本申请中字符“/”，一般表示前后关联对象是一种“或”的关系。
以上所述，仅为本申请的较佳实施例而已，并非用于限定本申请的保护范围，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。

Claims (50)

  1. 一种小区切换方法，所述方法包括：
    处于第一连接状态的终端设备在主小区组发生无线链路失败的情况下，所述终端设备确定是否满足切换触发条件；
    所述终端设备基于所确定的结果执行条件切换或上报主小区组无线链路失败信息。
  2. 根据权利要求1所述的方法，其中，所述终端设备基于所确定的结果执行条件切换或上报主小区组无线链路失败信息包括：
    若所述终端设备在主小区组发生无线链路失败与所述终端设备满足所述切换触发条件发生在同一时刻，则所述终端设备执行向所述切换触发条件对应的目标小区的条件切换。
  3. 根据权利要求2所述的方法，其中，所述终端设备在主小区组无线链路失败与满足所述切换触发条件发生在同一时刻时，执行向所述切换触发条件对应的目标小区的条件切换根据网络设备发送的指示信息确定，或者由协议约定。
  4. 根据权利要求1至3任一项所述的方法，其中，所述方法还包括：
    所述终端设备禁止发送第一消息。
  5. 根据权利要求1至4任一项所述的方法，其中，所述方法还包括：
    所述终端设备禁止启动第一定时器。
  6. 根据权利要求1所述的方法，其中，所述终端设备基于所确定的结果执行条件切换或上报主小区组无线链路失败信息包括：
    所述终端设备在主小区组发生无线链路失败时，所述终端设备发送第一消息。
  7. 根据权利要求6所述的方法，其中，所述终端设备基于所确定的结果执行条件切换或上报主小区组无线链路失败信息还包括：
    所述终端设备启动第一定时器。
  8. 根据权利要求6或7所述的方法，其中，所述方法还包括：
    在第一定时器运行期间，若所述终端设备满足所述切换触发条件，则所述终端设备执行向所述切换触发条件对应的目标小区的条件切换。
  9. 根据权利要求8所述的方法，其中，所述方法还包括：
    所述终端设备停止运行所述第一定时器。
  10. 根据权利要求1所述的方法，其中，所述方法还包括：
    若所述终端设备在主小区组发生无线链路失败与所述终端设备满足所述切换触发条件发生在同一时刻，则所述终端设备发送第一消息。
  11. 根据权利要求10所述的方法，其中，所述终端设备在主小区组无线链路失败与所述终端设备满足所述切换触发条件发生在同一时刻时，发送第一消息根据网络设备的指示信息确定或由协议约定。
  12. 根据权利要求3或11所述的方法，其中，所述指示信息携带于无线资源控制RRC消息中。
  13. 根据权利要求10或11所述的方法，其中，所述方法还包括：
    所述终端设备停止确定是否满足所述切换触发条件。
  14. 根据权利要求10至13任一项所述的方法，其中，所述方法还包括：
    所述终端设备启动第一定时器。
  15. 根据权利要求10至14任一项所述的方法，其中，所述方法还包括：
    在第一定时器运行期间，若所述终端设备接收到RRC消息，则所述终端设备停止运行所述第一定时器。
  16. 根据权利要求5、9、13至15任一项所述的方法，其中，所述第一定时器包括T316定时器。
  17. 根据权利要求4、6和10任一项所述的方法，其中，所述第一消息包括主小区组失败信息MCGFailureInformation消息。
  18. 根据权利要求1至17任一项所述的方法，其中，所述第一连接状态包括双连接状态。
  19. 一种终端设备，所述终端设备包括：
    处理单元，配置为处于第一连接状态的终端设备在主小区组发生无线链路失败的情况下，确定是否满足切换触发条件；基于所确定的结果执行条件切换或上报主小区组无线链路失败信息。
  20. 根据权利要求19所述的终端设备，其中，所述处理单元，还配置为若所述终端设备在主小区组发生无线链路失败与所述终端设备满足所述切换触发条件发生在同一时刻，执行向所述切换触发条件对应的目标小区的条件切换。
  21. 根据权利要求20所述的终端设备，其中，所述终端设备在主小区组无线链路失败与满足所述切换触发条件发生在同一时刻时，执行向所述切换触发条件对应的目标小区的条件切换根据网络设备发送的指示信息确定，或者由协议约定。
  22. 根据权利要求19至21任一项所述的终端设备，其中，所述处理单元，还配置为禁止发送第一消息。
  23. 根据权利要求19至22任一项所述的终端设备，其中，所述处理单元，还配置为禁止启动第一定时器。
  24. 根据权利要求19所述的终端设备，其中，所述处理单元，配置为所述终端设备在主小区组发生无线链路失败时，发送第一消息。
  25. 根据权利要求24所述的终端设备，其中，所述处理单元，还配置为启动第一定时器。
  26. 根据权利要求24或25所述的终端设备，其中，所述处理单元，还配置为在第一定时器运行期间，若所述终端设备满足所述切换触发条件，执行向所述切换触发条件对应的目标小区的条件切换。
  27. 根据权利要求26所述的终端设备，其中，所述处理单元，还配置为停止运行所述第一定时器。
  28. 根据权利要求19所述的终端设备，其中，所述处理单元，配置为若所述终端设备在主小区组发生无线链路失败与所述终端设备满足所述切换触发条件发生在同一时刻，发送第一消息。
  29. 根据权利要求28所述的终端设备，其中，所述终端设备在主小区组无线链路失败与所述终端设备满足所述切换触发条件发生在同一时刻时，发送第一消息根据网络设备发生的指示信息确定或由协议约定。
  30. 根据权利要求21或29所述的终端设备，所述指示信息携带于无线资源控制RRC消息中。
  31. 根据权利要求28或29所述的终端设备，其中，所述处理单元，配置为停止确定是否满足所述切换触发条件。
  32. 根据权利要求28至31任一项所述的终端设备，其中，所述处理单元，还配置为启动第一定时器。
  33. 根据权利要求28至32任一项所述的终端设备，其中，所述处理单元，还配置为在第一定时器运行期间，若所述终端设备接收到RRC消息，则所述终端设备停止运行所述第一定时器。
  34. 根据权利要求23、27、31至33任一项所述的终端设备，其中，所述第一定时器包括T316定时器。
  35. 根据权利要求22、24和28任一项所述的终端设备，其中，所述第一消息包括主小区组失败信息MCGFailureInformation消息。
  36. 根据权利要19至35任一项所述的终端设备，其中，所述第一连接状态包括双连接状态。
  37. 一种小区接入方法，所述方法包括：
    网络设备发送指示信息，所述指示信息用于指示终端设备在主小区组无线链路失败与所述终端设备满足切换触发条件发生在同一时刻时，所述终端设备执行向所述切换触发条件对应的目标小区的条件切换、或者所述终端设备发送第一消息。
  38. 根据权利要求37所述的方法，其中，所述指示信息携带于无线资源控制RRC消息中。
  39. 一种网络设备，所述网络设备包括：
    发送单元，配置为发送指示信息，所述指示信息用于指示终端设备在主小区组无线链路失败与所述终端设备满足切换触发条件发生在同一时刻时，所述终端设备执行向所述切换触发条件对应的目标小区的条件切换、或者所述终端设备发送第一消息。
  40. 根据权利要求39所述的网络设备，其中，所述指示信息携带于无线资源控制RRC消息中。
  41. 一种终端设备，包括处理器和用于存储能够在处理器上运行的计算机程序的存 储器，其中，
    所述处理器用于运行所述计算机程序时，执行权利要求1至18任一项所述的小区切换方法的步骤。
  42. 一种网络设备，包括处理器和用于存储能够在处理器上运行的计算机程序的存储器，其中，
    所述处理器用于运行所述计算机程序时，执行权利要求37或38所述的小区切换方法的步骤。
  43. 一种存储介质，存储有可执行程序，所述可执行程序被处理器执行时，实现权利要求1至18任一项所述的小区切换方法。
  44. 一种存储介质，存储有可执行程序，所述可执行程序被处理器执行时，实现权利要求37或38所述的小区切换方法。
  45. 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如权利要求1至18任一项所述的小区切换方法。
  46. 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如权利要求37或38所述的小区切换方法。
  47. 一种计算机程序，所述计算机程序使得计算机执行如权利要求1至18任一项所述的小区切换方法。
  48. 一种计算机程序，所述计算机程序使得计算机执行如权利要求37或38任一项所述的小区切换方法。
  49. 一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至18任一项所述的小区切换方法。
  50. 一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求37或38所述的小区切换方法。
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