WO2023124749A1 - 小区切换方法、装置、网络设备及存储介质 - Google Patents

小区切换方法、装置、网络设备及存储介质 Download PDF

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Publication number
WO2023124749A1
WO2023124749A1 PCT/CN2022/135892 CN2022135892W WO2023124749A1 WO 2023124749 A1 WO2023124749 A1 WO 2023124749A1 CN 2022135892 W CN2022135892 W CN 2022135892W WO 2023124749 A1 WO2023124749 A1 WO 2023124749A1
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Prior art keywords
network device
terminal
release
cell
handover
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PCT/CN2022/135892
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English (en)
French (fr)
Inventor
韩志广
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哲库科技(北京)有限公司
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Publication of WO2023124749A1 publication Critical patent/WO2023124749A1/zh

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

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular to a cell handover method, device, network equipment, and storage medium.
  • a terminal In a wireless communication system, a terminal often needs to perform cell handover, that is, handover from a source cell to a target cell.
  • cell handover that is, handover from a source cell to a target cell.
  • a dual active protocol stack Dual Active Protocol Stack, DAPS
  • Handover Handover, HO
  • the terminal When performing cell handover based on DAPS HO technology, the terminal maintains the connection with the source cell, synchronizes data with the target cell, and realizes connection establishment. radio resources and configuration information, and then notify the terminal to delete the configuration information of the source cell and release the connection with the source cell.
  • the terminal after the connection is established, when the terminal fails in the wireless link on the target cell, the terminal will delete the configuration information of the source cell and the target cell based on the protocol, then perform a network search, and then report to the new cell found in the network Initiate the connection establishment process.
  • Embodiments of the present application provide a cell handover method, device, network equipment, and storage medium, which can reduce network delay. Described technical scheme is as follows:
  • an embodiment of the present application provides a cell handover method, the method is executed by a first network device, and the first network device provides a communication service for a target cell, and the method includes:
  • the second network device In the case of receiving the terminal's release completion notification for the first release instruction, sending a second release instruction to a second network device, the second release instruction indicating to release the connection between the source cell and the terminal , the second network device provides a communication service for the source cell.
  • an embodiment of the present application provides a cell handover method, the method is executed by a second network device, and the second network device provides a communication service for the source cell, and the method includes:
  • the first release indication is sent after the connection with the source cell is released, and the first network device is used to provide communication services for the target cell.
  • an embodiment of the present application provides a cell handover method, the method is executed by a terminal, and the method includes:
  • the first release indication When receiving the first release indication sent by the first network device, release the connection with the source cell, and send a release completion notification of the first release indication to the first network device, the first release indication
  • the release completion notification is used to instruct the first network device to send a second release instruction to the second network device
  • the second release instruction is used to instruct the second network device to release the connection between the source cell and the terminal.
  • an embodiment of the present application provides a cell handover device, the device is executed by a first network device, and the first network device provides a communication service for a target cell, and the device includes:
  • the first sending module is configured to send a first release indication to the terminal when receiving the configuration completion notification of the terminal, where the first release indication indicates to release the connection with the source cell;
  • a second sending module configured to send a second release indication to a second network device when receiving a release completion notification from the terminal for the first release indication, the second release indication indicating to release the source A cell is connected to the terminal, and the second network device provides communication services for the source cell.
  • an embodiment of the present application provides a cell handover device, the device is executed by a second network device, and the second network device provides communication services for the source cell, and the device includes:
  • the first release module is configured to release the connection between the source cell and the terminal when receiving a second release instruction from the terminal, where the second release instruction is that the terminal receives the second release instruction sent by the first network device. After a release indication is sent after releasing the connection with the source cell based on the first release indication, the first network device is used to provide communication services for the target cell.
  • an embodiment of the present application provides a cell switching device, the device is executed by a terminal, and the device includes:
  • the third sending module is configured to send a configuration completion notification to the first network device after switching to the target cell, and the first network device is used to provide communication services for the target cell;
  • the second release module is configured to release the connection with the source cell when receiving the first release instruction sent by the first network device, and send a release completion notification of the first release instruction to the first network device
  • the release completion notification of the first release indication is used to instruct the first network device to send a second release indication to the second network device, and the second release indication is used to instruct the second network device to release the source cell and The connection of the terminal.
  • an embodiment of the present application provides a first network device, the first network device includes a processor and a memory; the memory stores at least one program, and the at least one program is used to be used by the processor Execute to realize the cell handover method as described above.
  • an embodiment of the present application provides a second network device, the second network device includes a processor and a memory; the memory stores at least one program, and the at least one program is used to be used by the processor Execute to realize the cell handover method as described above.
  • an embodiment of the present application provides a terminal, the terminal includes a processor and a memory; the memory stores at least one program, and the at least one program is used to be executed by the processor to implement any of the above A cell switching method described above.
  • an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores at least one program, and the at least one program is used to be executed by a processor to implement any of the above aspects.
  • an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores at least one program, and the at least one program is used to be executed by a processor to implement any of the above aspects.
  • an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores at least one program, and the at least one program is used to be executed by a processor to implement any of the above aspects.
  • an embodiment of the present application provides a computer program product, the computer program product includes computer instructions, and the computer instructions are stored in a computer-readable storage medium; the processor of the first network device reads from the computer-readable storage medium Taking the computer instruction, the processor executes the computer instruction, so that the first network device executes the cell handover method provided in the above aspect.
  • an embodiment of the present application provides a computer program product, the computer program product includes computer instructions, and the computer instructions are stored in a computer-readable storage medium; the processor of the second network device reads from the computer-readable storage medium The computer instruction is fetched, and the processor executes the computer instruction, so that the second network device executes the cell handover method provided in the above aspect.
  • an embodiment of the present application provides a computer program product, the computer program product includes computer instructions, and the computer instructions are stored in a computer-readable storage medium; the processor of the terminal reads the computer program from the computer-readable storage medium. Instructions, the processor executes the computer instructions, so that the terminal executes the cell handover method provided in the above aspects.
  • FIG. 1 shows a schematic diagram of an implementation environment involved in a cell handover method shown in an exemplary embodiment of the present application
  • FIG. 2 shows a flow chart of a cell handover method shown in an exemplary embodiment of the present application
  • FIG. 3 shows a flowchart of a cell handover method shown in an exemplary embodiment of the present application
  • FIG. 4 shows a flowchart of a cell switching method shown in an exemplary embodiment of the present application
  • FIG. 5 shows a flowchart of a cell handover method shown in an exemplary embodiment of the present application
  • FIG. 6 shows a sequence flow chart of a cell handover method shown in an exemplary embodiment of the present application
  • FIG. 7 shows a flowchart of a cell handover method shown in an exemplary embodiment of the present application
  • FIG. 8 shows a sequence flow chart of a cell handover method shown in an exemplary embodiment of the present application
  • Fig. 9 shows a block diagram of a cell switching device shown in an exemplary embodiment of the present application.
  • Fig. 10 shows a block diagram of a cell switching device shown in an exemplary embodiment of the present application
  • Fig. 11 shows a block diagram of a cell switching device shown in an exemplary embodiment of the present application
  • Fig. 12 shows a structural block diagram of a terminal shown in an exemplary embodiment of the present application
  • Fig. 13 shows a structural block diagram of a network device shown in an exemplary embodiment of the present application.
  • the "plurality” mentioned herein means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently.
  • the character “/” generally indicates that the contextual objects are an "or” relationship.
  • Cell also known as a cell, refers to the area covered by one of the base stations or a part of the base station (sector antenna) in the cellular mobile communication system. In this area, the terminal can reliably communicate with the base station through a wireless channel.
  • Cell switching Switch the server cell from the current serving cell to another serving cell when the terminal moves or in other situations.
  • the cell before the handover is called the source cell
  • the cell after the handover is called the target cell.
  • Dual Active Protocol Stack Handover A cell handover standard in the communication industry, which can ensure that the terminal maintains communication during the cell handover process.
  • FIG. 1 shows a schematic diagram of an implementation environment involved in a cell handover method shown in an exemplary embodiment of the present application.
  • the implementation environment includes a terminal 10 , a first network device 20 and a second network device 30 .
  • the terminal 10, the first network device 20 and the second network device 30 are all connected through a network.
  • the first network device 20 and the second network device 30 are any network devices with wireless transceiver function.
  • both the first network device 20 and the second network device 30 may be a base station, an evolved Node B (evolved Node B, eNB), a next generation Node B (next Generation, gNB) Wireless Fidelity (Wireless Fidelity, WIFI) Access point (Access Point, AP), wireless relay node, wireless backhaul node, transmission point (Transmission Point, TP) or sending and receiving point (Transmission and Reception Point, TRP) in the system.
  • eNB evolved Node B
  • gNB next generation Node B
  • WIFI Wireless Fidelity
  • Access Point Access Point
  • AP wireless relay node
  • wireless backhaul node transmission point
  • Transmission Point Transmission Point
  • TRP Transmission and Reception Point
  • Both the first network device 20 and the second network device 30 can allocate transmission resources for the terminal 10, so that the terminal 10 can communicate with the source cell or the target cell based on the transmission resources.
  • the coverage area of each network device can be divided into at least one cell.
  • the source cell and the target cell may be cells corresponding to the same network device or different network devices. That is, the first network device 20 and the second network device 30 are the same network device or different network devices, which is not specifically limited in this embodiment of the present application.
  • the terminal 10 is a terminal 10 having a wireless communication function.
  • the terminal 10 may be a mobile phone, a tablet computer, a computer with a wireless communication function, or a wearable device. In the embodiment of the present application, no specific limitation is made on this.
  • the cell handover process may be a master cell group (Master Cell Group, MCG) handover process, or a secondary cell group (Secondary Cell Group, SCG) change process. In the embodiment of the present application, no specific limitation is made on this.
  • FIG. 2 shows a flowchart of a cell switching method according to an exemplary embodiment of the present application.
  • the method is performed by the first network device, and the method includes the following steps:
  • Step S201 In the case of receiving the configuration completion notification of the terminal, send a first release instruction to the terminal, and the first release instruction indicates to release the connection with the source cell;
  • Step S202 In the case of receiving the terminal's release completion notification for the first release instruction, send a second release instruction to the second network device, the second release instruction indicates to release the connection between the source cell and the terminal, the The second network device provides communication services for the source cell.
  • the method also includes:
  • the method before receiving the configuration completion notification of the terminal, before sending the first release indication to the terminal, the method further includes:
  • the handover request is used to request handover to the target cell, and the handover request response includes first configuration information of the target cell;
  • a handover request response is sent to the second network device.
  • the method also includes:
  • the sequence code information of the second network device represents the encoding information of the Packet Data Convergence Protocol (PDCP).
  • PDCP Packet Data Convergence Protocol
  • the method further includes:
  • the path switching request instructs to switch the serving cell used for data interaction with the terminal;
  • the network device corresponding to the source cell can perform handover
  • the configuration information of the terminal is retained before completion, so that if the cell handover fails, the connection between the terminal and the source cell can be restored, so that there is no need to re-search the network and establish a connection, thereby reducing network delay.
  • FIG. 3 shows a flowchart of a cell switching method according to an exemplary embodiment of the present application.
  • the method is performed by a second network device, and the method includes the following steps:
  • Step S301 Release the connection between the source cell and the terminal when receiving the second release instruction from the terminal, the second release instruction is based on the terminal after receiving the first release instruction sent by the first network device
  • the first release indication is sent after the connection with the source cell is released, and the first network device is used to provide communication services for the target cell.
  • the method also includes:
  • the method also includes:
  • restoring the data transmission configuration of the source cell to the terminal includes:
  • the method when the second release indication of the terminal is received, before releasing the connection between the source cell and the terminal, the method further includes:
  • the method also includes:
  • the sequence code information is fed back based on the handover success notification.
  • the network device corresponding to the source cell can perform handover
  • the configuration information of the terminal is retained before completion, so that if the cell handover fails, the connection between the terminal and the source cell can be restored, so that there is no need to re-search the network and establish a connection, thereby reducing network delay.
  • FIG. 4 shows a flowchart of a cell switching method according to an exemplary embodiment of the present application.
  • the method includes the following steps:
  • Step S401 After switching to the target cell, send a configuration completion notification to the first network device, the first network device is used to provide communication services for the target cell;
  • Step S402 When receiving the first release instruction sent by the first network device, release the connection with the source cell, and send a release completion notification of the first release instruction to the first network device, the first release instruction A release completion notification of a release indication is used to instruct the first network device to send a second release indication to the second network device, and the second release indication is used to instruct the second network device to release the connection between the source cell and the terminal. connect.
  • the method also includes:
  • a handover failure notification is sent to the second network device, and the handover failure notification is used to instruct the second network device to restore the source cell to the Terminal data transmission configuration;
  • the network device corresponding to the source cell can perform handover
  • the configuration information of the terminal is retained before completion, so that if the cell handover fails, the connection between the terminal and the source cell can be restored, so that there is no need to re-search the network and establish a connection, thereby reducing network delay.
  • FIG. 5 shows a flowchart of a cell switching method according to an exemplary embodiment of the present application.
  • a successful cell handover is taken as an example for illustration, and the method includes the following steps:
  • Step S501 the first network device receives a switching request sent by the second network device.
  • the handover request is used to request handover of the terminal from the source cell to the target cell.
  • FIG. 6 shows a sequence diagram of a cell switching method according to an exemplary embodiment of the present application.
  • the terminal measures the current network environment, and reports the measurement result to the second network device, and the second network device makes a cell handover decision based on the measurement result. If it is determined that cell handover is required, the second network device determines the target cell, and sends a handover request to the first network device corresponding to the target cell. Correspondingly, in this step, the first network device receives the switching request sent by the second network device.
  • Step S502 the first network device sends a handover request response to the second network device based on the handover request.
  • the handover request response includes first configuration information of the target cell.
  • the first configuration information is used to indicate configuration parameters of the target cell.
  • the first configuration information includes an identifier of the target cell, a Cell-Radio Network Temporary Identifier (C-RNTI) of the target cell, a security algorithm identifier of a security algorithm selected by the first network device, and the like.
  • C-RNTI Cell-Radio Network Temporary Identifier
  • the first network device generates a handover request response to the handover request based on the handover request, and sends the generated handover request response to the second network device.
  • Step S503 the second network device receives the handover request response, where the handover request response includes the first configuration information of the target cell.
  • Step S504 the second network device sends a reconfiguration instruction to the terminal based on the first configuration information in the handover request response.
  • the reconfiguration instruction also includes a data radio bearer (Data Radio Bearer, DRB) configured with dual activation protocol configuration parameters (dapsConfig-r16), and may also include a set of dedicated Random Access Channel (Random Access Channel, RACH), its associated synchronization signal and physical broadcast channel block (Synchronization Signal and PBCH block, SSB) configuration index and its associated terminal characteristic channel state information reference signal (Channel State Information Reference Signal, CSI-RS), etc.
  • DRB Data Radio Bearer
  • the reconfiguration instruction may be a radio resource control (Radio Resource Control, RRC) instruction, etc., which is not specifically limited in this embodiment of the present application.
  • RRC Radio Resource Control
  • Step S505 the terminal receives the reconfiguration instruction.
  • Step S506 The terminal performs data transmission configuration based on the reconfiguration instruction.
  • the terminal maintains the connection with the second network device corresponding to the source cell, and performs configuration based on the first configuration information.
  • the terminal starts the handover timer T304, performs configuration, synchronization and random access processes based on the first configuration information, thereby completing the configuration for the target cell, and stops the handover timer T304 after the configuration is completed.
  • the terminal modifies the data transmission configuration corresponding to the source cell based on the reconfiguration instruction, so that the modified data transmission configuration can match the target cell.
  • the terminal configures the reconfigured Packet Data Convergence Protocol (PDCP) entity, so that the DRB can meet the requirements of DAPS, and carry the source cell and the target cell at the same time during the cell handover process.
  • PDCP Packet Data Convergence Protocol
  • the terminal configures the terminal based on the DRB parameters in the first configuration information, so that the DRB meets the data transmission requirements of the target cell.
  • the data carried by this non-DAPS DRB includes: PDCP, RLC state variables, security configuration, and data stored in transmit and receive buffers in PDCP and RLC entities.
  • the terminal configures the DRB of the above data as the DRB corresponding to the target cell based on the first configuration information.
  • Signal Radio Bearer Signal Radio Bearers, SRB
  • SRB Signal Radio Bearers
  • RLC Radio Link Control
  • Step S507 After switching to the target cell, the terminal sends a configuration completion notification to the first network device.
  • the configuration completion notification is used to indicate that the configuration of the target cell has been completed and data transmission can be performed.
  • Step S508 the first network device receives the configuration completion notification.
  • Step S509 the first network device sends a first release instruction to the terminal.
  • the first release indication indicates to release the connection with the source cell.
  • Step S510 the terminal receives the first release indication.
  • Step S511 based on the first release indication, the terminal releases the connection between the terminal and the source cell.
  • the terminal deletes the related configuration of the source cell based on the first release instruction, thereby releasing the connection with the source cell.
  • Step S512 the terminal sends a release completion notification for the first release indication to the first network device.
  • the release completion notification indicates that the terminal has currently released the connection with the source cell.
  • Step S513 the first network device receives the release completion notification.
  • Step S514 the first network device sends a second release indication to the second network device, where the second release indication carries the terminal identifier of the terminal.
  • the second release instruction indicates to release the connection between the terminal corresponding to the terminal identifier and the source cell.
  • Step S515 the second network device receives the second release indication.
  • Step S516 The second network device releases the connection between the terminal corresponding to the terminal identifier and the source cell based on the second release instruction.
  • the second network device determines the terminal to be released based on the terminal identifier, and deletes configuration information related to the terminal in the source cell.
  • the first network device before sending the second release indication to the second network device, the first network device first sends a handover completion notification to the second network device.
  • the second network device obtains the current serial code information, and sends the serial code information to the first network device, and receives the serial code information of the second network device
  • the first network device stores the serial code information.
  • the sequence code information may be a Packet Data Convergence Protocol (Packet Data Convergence Protocol, PDCP) sequence code (Sequence Number, SN), which is used to represent coding information of PDCP.
  • PDCP Packet Data Convergence Protocol
  • SN Sequence Number
  • the first network device also sends a path switching request to the data management platform, the path switching request carries the identity of the target cell, and the data management platform switches the data transmission path from the source cell to the data path corresponding to the target cell based on the path switching request , wherein the data transmission path is the transmission path used by the data management platform and the terminal for data transmission, and sends a path switching response to the first network device, and the path switching response indicates that the path switching is currently completed, and the first network device receives the path switching response. Based on the path switching response, the first network device determines that path switching has been completed, so as to transmit data between the data management platform and the terminal based on the path.
  • the data management platform is an access and mobility management function (Access and Mobility Management Function, AMF) platform or a user plane function (User Plane Function, UPF) platform, etc., which are not specifically limited in the application embodiment.
  • AMF Access and Mobility Management Function
  • UPF User Plane Function
  • the first network device can first send a switch success notification to the second network device, and then send a path switching request to the data management platform; the first network device can also first send a path switching request to the data management platform, and then send a path switching request to the data management platform
  • the second network device sends a switch success notification; the first network device may also send a switch success notification to the second network device and a path switch request to the data management platform at the same time. In the embodiment of the present application, no specific limitation is made on this.
  • the network device corresponding to the source cell can perform handover
  • the configuration information of the terminal is retained before completion, so that if the cell handover fails, the connection between the terminal and the source cell can be restored, so that there is no need to re-search the network and establish a connection, thereby reducing network delay.
  • FIG. 7 shows a flowchart of a cell switching method according to an exemplary embodiment of the present application.
  • an example of an unsuccessful cell handover is used for illustration, and the method includes the following steps:
  • Step S701 the first network device receives a switching request sent by the second network device.
  • step S501 The principle of this step is the same as that of step S501, and will not be repeated here.
  • Step S702 the first network device sends a handover request response to the second network device based on the handover request.
  • step S502 The principle of this step is the same as that of step S502, and will not be repeated here.
  • Step S703 the second network device receives the handover request response, where the handover request response includes the first configuration information of the target cell.
  • Step S704 The second network device sends a reconfiguration instruction to the terminal based on the first configuration information in the handover request response.
  • step S504 The principle of this step is the same as that of step S504, and will not be repeated here.
  • Step S705 the terminal receives the reconfiguration instruction.
  • Step S706 the terminal performs data transmission configuration based on the reconfiguration instruction.
  • step S506 The principle of this step is the same as that of step S506, and will not be repeated here.
  • Step S707 the terminal sends a handover failure notification to the second network device when the first release instruction sent by the first network device is not received.
  • the terminal determines that the handover from the source cell to the target cell is not successful, and releases the connection with the target cell.
  • the terminal has not completed the data transmission configuration, so the handover fails, and thus the terminal does not send a handover completion notification to the first network device. For example, if the terminal does not complete the data transmission configuration when the start time of the handover timer T304 reaches the first preset time length, the terminal determines that the handover fails.
  • the first preset duration continues to be set according to needs, which is not specifically limited in this embodiment of the present application. For example, the first preset duration is 1 second or 2 seconds.
  • the terminal completes the data transmission configuration, sends a configuration completion notification to the first network device, and determines that the handover fails when a radio link failure (Radio Link Failure, RLF) occurs in the target cell.
  • RLF Radio Link Failure
  • the terminal sends a configuration completion notification to the first network device, but does not receive a notification response from the first network device within a second preset time period, it is determined that the terminal has RLF in the target cell; or, after the terminal switches to the target cell, , sending detection information to the second network device every third preset time length, and if no response information to the detection information is received, it is determined that RLF occurs in the target cell.
  • the second preset duration and the third preset duration are set as required, and in the embodiment of the present application, the second preset duration and the third preset duration are not specifically limited.
  • the terminal deletes the configuration information of the target cell.
  • the terminal before deleting the configuration information of the target cell, stores the configuration information of the target cell and the configuration information of the source cell. In this step, the terminal determines the configuration information of the target cell from the stored configuration information of the target cell and the configuration information of the source cell, and deletes the configuration information, so that only the configuration information of the active cell is stored in the terminal, so that based on The configuration information of the source cell sends a handover failure notification to the second network device, which avoids re-performing network search and connection establishment according to the existing protocol, thereby improving efficiency.
  • the handover failure notification indicates that the terminal is currently not successfully handed over from the source cell to the target cell.
  • the terminal sends a handover failure notification to the second network device based on the originally stored configuration information of the source cell.
  • the handover failure notification includes failure information of this handover failure, for example, connection timeout and the like.
  • the terminal Before sending the handover notification to the second network device, the terminal needs to restore the data transmission configuration with the source cell.
  • the terminal modifies the data transmission configuration corresponding to the target cell, so that the modified data transmission configuration can match the source cell.
  • the terminal restores the PDCP entity based on the second configuration information, thereby releasing the DRB corresponding to the target cell that meets the DAPS requirement.
  • the terminal configures the terminal based on the DRB parameters in the second configuration information, so that the DRB restores the data transmission requirements of the source cell.
  • the terminal configures the DRB as the DRB corresponding to the source cell based on the second configuration information, and restores the data transmission configuration corresponding to the source cell.
  • the RLC entity of the SRB is rebuilt, and the previously idle SRB is restored to use.
  • Step S708 the second network device receives the handover failure notification.
  • Step S709 based on the handover failure notification, the second network device resumes the data transmission configuration of the source cell.
  • the second network device obtains second configuration information of the source cell corresponding to the terminal based on the handover failure notification; based on the second configuration information, restores the data transmission configuration of the source cell.
  • restoring the data transmission configuration of the source cell by the second network device includes: restoring corresponding parameter settings such as PDCP, DRB, and SRB corresponding to the source cell.
  • the second network device can restore the configuration information corresponding to the source cell. Data transmission configuration, so that there is no need to perform the reconnection establishment process, thereby reducing the communication delay of the terminal when the cell handover fails.
  • Step S710 the second network device sends a recovery completion notification to the terminal.
  • the second network device sends a recovery completion notification to the terminal based on the data transmission configuration with the original terminal.
  • Step S711 the terminal receives the recovery completion notification sent by the second network device.
  • the terminal updates the data transmission configuration corresponding to the restored source cell based on the data transmission configuration configured in the first configuration information.
  • the update process is the same as the principle of restoring the data transmission configuration in step S708, and details are not repeated here.
  • Step S712 the second network device sends a handover cancellation notification to the first network device, where the handover cancellation notification includes the terminal identifier of the terminal.
  • the handover cancellation notification is used to notify the first network device that no cell handover will be performed.
  • Step S713 the first network device receives the handover cancellation notification sent by the second network device.
  • Step S714 based on the handover cancellation notification, the first network device releases the connection between the terminal corresponding to the terminal identifier and the target cell.
  • the first network device determines the target cell of the connection to be released based on the terminal identifier in the handover cancellation notification, and deletes the radio resource and related configuration of the terminal corresponding to the target cell.
  • the terminal can continue to perform measurements.
  • the second network device can continue to judge whether to perform cell handover based on the measurement results. If cell handover is still required, Then the second network device determines the cell to be handed over from cells other than the target cell. This prevents the cell handover from failing again, thereby improving the success rate of the cell handover.
  • the network device corresponding to the source cell can perform handover
  • the configuration information of the terminal is retained before completion, so that if the cell handover fails, the connection between the terminal and the source cell can be restored, so that there is no need to re-search the network and establish a connection, thereby reducing network delay.
  • FIG. 9 shows a structural block diagram of a cell handover device provided by an embodiment of the present application.
  • the cell switching device can be implemented as all or a part of the processor through software, hardware or a combination of the two.
  • the unit includes:
  • the first sending module 901 is configured to send a first release indication to the terminal when receiving the configuration completion notification of the terminal, where the first release indication indicates to release the connection with the source cell;
  • the second sending module 902 is configured to send a second release instruction to a second network device when receiving the terminal's release completion notification for the first release instruction, where the second release instruction indicates to release the source cell and the For terminal connection, the second network device provides communication services for the source cell.
  • the device also includes:
  • the first release module is configured to release the connection between the terminal and the target cell when receiving the handover cancel notification from the second network device.
  • the device also includes:
  • a generating module configured to generate a handover request response to the handover request when the handover request of the second network device is received, the handover request is used to request handover to the target cell, and the handover request response includes the target cell first configuration information;
  • a fourth sending module configured to send a handover request response to the second network device.
  • the device also includes:
  • the fifth sending module is configured to send a handover success notification to the second network device when receiving the terminal's release completion notification for the first release indication, and the second network device is configured to feed back the handover success notification based on the handover success notification.
  • the synchronization module is configured to store the sequence code information of the second network device upon receiving the sequence code information, where the sequence code information represents the encoding information of the Packet Data Convergence Protocol PDCP.
  • the device also includes:
  • the sixth sending module is configured to send a path switching request to the data management platform, where the path switching request instructs to switch the serving cell used for data interaction with the terminal;
  • the first receiving module is configured to receive the path switching response sent by the data management platform.
  • the network device corresponding to the source cell can perform handover
  • the configuration information of the terminal is retained before completion, so that if the cell handover fails, the connection between the terminal and the source cell can be restored, so that there is no need to re-search the network and establish a connection, thereby reducing network delay.
  • FIG. 10 shows a structural block diagram of a cell handover device provided by an embodiment of the present application.
  • the cell switching device can be implemented as all or a part of the processor through software, hardware or a combination of the two.
  • the unit includes:
  • the first release module 1001 is configured to release the connection between the source cell and the terminal when receiving a second release indication from the terminal, where the second release indication is that the terminal receives the first release sent by the first network device After the indication, based on the first release indication, it is sent after releasing the connection with the source cell, and the first network device is used to provide communication services for the target cell.
  • the device also includes:
  • the first restoration module is configured to restore the data transmission configuration of the source cell to the terminal when receiving the handover failure notification of the terminal;
  • the seventh sending module is configured to send a completion recovery notification to the terminal when the data transmission configuration is completed.
  • the device also includes:
  • the eighth sending module is configured to send a handover cancellation notification to the first network device when receiving the handover failure notification of the terminal, and the handover cancellation notification indicates to release the connection between the terminal and the target cell.
  • the first recovery module includes:
  • an acquiring unit configured to acquire second configuration information of the source cell based on the handover failure notification
  • a restoring unit configured to restore the data transmission configuration of the source cell to the terminal based on the second configuration information.
  • the device also includes:
  • a ninth sending module configured to send a handover request to the first network device when the target cell satisfies the cell handover condition, where the handover request is used to request handover to the target cell;
  • a second receiving module configured to receive a handover request response sent by the first network device, where the handover request response includes first configuration information of the target cell;
  • a tenth sending module configured to send a reconfiguration instruction to the terminal based on the first configuration information in the handover request response.
  • the device also includes:
  • the feedback module is configured to, in the case of receiving the handover success notification sent by the first network device, feedback sequence code information based on the handover success notification.
  • the network device corresponding to the source cell can perform handover
  • the configuration information of the terminal is retained before completion, so that if the cell handover fails, the connection between the terminal and the source cell can be restored, so that there is no need to re-search the network and establish a connection, thereby reducing network delay.
  • FIG. 11 shows a structural block diagram of a cell handover device provided by an embodiment of the present application.
  • the cell switching device can be implemented as all or a part of the processor through software, hardware or a combination of the two.
  • the unit includes:
  • the third sending module 1101 is configured to send a configuration completion notification to the first network device after switching to the target cell, where the first network device is used to provide communication services for the target cell;
  • the second release module 1102 is configured to release the connection with the source cell when receiving the first release instruction sent by the first network device, and send a release completion notification of the first release instruction to the first network device,
  • the release completion notification of the first release indication is used to instruct the first network device to send a second release indication to the second network device, and the second release indication is used to instruct the second network device to release the connection between the source cell and the terminal.
  • the device also includes:
  • the eleventh sending module is configured to send a handover failure notification to the second network device when the first release instruction sent by the first network device is not received, and the handover failure notification is used to instruct the second network device to recover Data transmission configuration of the terminal by the source cell;
  • the second restoration module is configured to restore the data transmission configuration with the source cell when receiving the restoration completion notification from the second network device.
  • the network device corresponding to the source cell can perform handover
  • the configuration information of the terminal is retained before completion, so that if the cell handover fails, the connection between the terminal and the source cell can be restored, so that there is no need to re-search the network and establish a connection, thereby reducing network delay.
  • FIG. 12 shows a structural block diagram of a terminal 1200 provided by an exemplary embodiment of the present application.
  • the terminal 1200 may be a terminal with an image processing function such as a smart phone and a tablet computer.
  • the terminal 1200 in this application may include one or more of the following components: a processor 1210 , a memory 1220 , and a communication module 1230 .
  • Processor 1210 may include one or more processing cores.
  • the processor 1210 uses various interfaces and lines to connect various parts of the entire terminal 1200, and executes the terminal by running or executing instructions, programs, code sets or instruction sets stored in the memory 1220, and calling data stored in the memory 1220. 1000's of various functions and processing data.
  • the processor 1210 may adopt at least one of Digital Signal Processing (Digital Signal Processing, DSP), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), and Programmable Logic Array (Programmable Logic Array, PLA). implemented in the form of hardware.
  • DSP Digital Signal Processing
  • FPGA Field-Programmable Gate Array
  • PLA Programmable Logic Array
  • the processor 1210 can integrate one or more of a central processing unit (Central Processing Unit, CPU), an image processor (Graphics Processing Unit, GPU), a neural network processor (Neural-network Processing Unit, NPU) and a modem, etc.
  • a central processing unit Central Processing Unit, CPU
  • an image processor Graphics Processing Unit, GPU
  • a neural network processor Neural-network Processing Unit, NPU
  • the CPU mainly handles the operating system, user interface and application programs, etc.
  • the GPU is used to render and draw the content that needs to be displayed on the display screen
  • the NPU is used to realize artificial intelligence (Artificial Intelligence, AI) functions
  • the modem is used to process wireless communication. It can be understood that, the above-mentioned modem may not be integrated into the processor 1210, but may be implemented by a single chip.
  • the memory 1220 may include a random access memory (Random Access Memory, RAM), and may also include a read-only memory (Read-Only Memory, ROM).
  • the memory 1220 includes a non-transitory computer-readable storage medium.
  • the memory 1220 may be used to store instructions, programs, codes, sets of codes or sets of instructions.
  • the memory 1220 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), It is used to implement the instructions and the like of the various method embodiments described below; the storage data area can store data created according to the use of the terminal 1200 (such as audio data, phonebook) and the like.
  • the communication module 1230 is used for transmitting and receiving radio frequency signals, and the communication module may be a wireless fidelity (Wireless Fidelity, WIFI) module or the like.
  • WIFI wireless Fidelity
  • the terminal 1210 may also include a display screen, which is a display component for displaying a user interface.
  • the display screen is a display screen with a touch function. Through the touch function, the user can use any suitable object such as a finger or a touch pen to perform a touch operation on the display screen.
  • the display screen is usually set on the front panel of the terminal 1200 .
  • the display screen can be designed as full screen, curved screen, special-shaped screen, double-sided screen or folding screen.
  • the display screen can also be designed as a combination of a full screen and a curved screen, a combination of a special-shaped screen and a curved screen, etc., which are not limited in this embodiment.
  • the structure of the terminal 1200 shown in the above drawings does not constitute a limitation on the terminal 1200, and the terminal 1200 may include more or less components than those shown in the figure, or combine certain some components, or a different arrangement of components.
  • the terminal 1200 also includes components such as a microphone, a loudspeaker, a radio frequency circuit, an input unit, a sensor, an audio circuit, a power supply, and a Bluetooth module, which will not be repeated here.
  • FIG. 13 shows a structural block diagram of a network device 1300 provided by an exemplary embodiment of the present application.
  • the network device 1300 may be a first network device or a second network device.
  • the network device 1300 may have relatively large differences due to different configurations or performances, and may include one or more processors (Central Processing Units, CPU) 1310 and one or more memories 1320, wherein the memory 1320 stores There is at least one instruction, and the at least one instruction is loaded and executed by the processor 1310 to implement the cell handover method provided by the foregoing method embodiments.
  • the network device 1300 may also have components such as wired or wireless network interfaces, keyboards, and input/output interfaces for input and output.
  • the network device 1300 may also include other components for implementing device functions, which will not be repeated here.
  • the embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores at least one program, and at least one program is used to be loaded and executed by a processor to implement the first network device as shown in the above embodiments side of the cell handover method.
  • the embodiment of the present application also provides a computer-readable storage medium, the storage medium stores at least one program, and at least one program is used to be loaded and executed by a processor to realize the cell on the second network device side as shown in the above embodiments Switch method.
  • the embodiment of the present application also provides a computer-readable storage medium, the storage medium stores at least one program, and the at least one program is used to be loaded and executed by a processor to implement the cell handover method on the terminal side as shown in the above embodiments.
  • An embodiment of the present application provides a computer program product, the computer program product includes computer instructions, and the computer instructions are stored in a computer-readable storage medium; the processor of the first network device reads the computer instructions from the computer-readable storage medium The processor executes the computer instruction, so that the first network device executes to implement the cell handover method shown in the above embodiments.
  • An embodiment of the present application provides a computer program product, the computer program product includes computer instructions, and the computer instructions are stored in a computer-readable storage medium; the processor of the second network device reads the computer instructions from the computer-readable storage medium The processor executes the computer instruction, so that the second network device executes to implement the cell handover method shown in the above embodiments.
  • An embodiment of the present application provides a computer program product, the computer program product includes computer instructions, and the computer instructions are stored in a computer-readable storage medium; the processor of the terminal reads the computer instructions from the computer-readable storage medium, and the processor Executing the computer instructions causes the terminal to implement the cell handover method shown in the above embodiments.
  • the functions described in the embodiments of the present application may be implemented by hardware, software, firmware or any combination thereof.
  • the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage media may be any available media that can be accessed by a general purpose or special purpose computer.

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Abstract

一种小区切换方法、装置、网络设备及存储介质，属于通信技术领域。该方法包括：在接收到终端的配置完成通知的情况下，向终端发送第一释放指示，第一释放指示指示释放与源小区的连接（S201）；在接收到终端针对第一释放指示的释放完成通知的情况下，向第二网络设备发送第二释放指示，第二释放指示指示释放源小区与终端的连接，第二网络设备为源小区提供通信服务（S202）。通过本方案，源小区对应的网络设备中能够在切换完成前保留终端的配置信息，从而如果小区切换失败，能够恢复终端与源小区的连接，这样无需重新进行网络搜索和建立连接，进而降低了网络延迟。

Description

小区切换方法、装置、网络设备及存储介质
本申请要求于2021年12月31日提交的申请号为202111660335.2、发明名称为“小区切换方法、装置、网络设备及存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信技术领域，特别涉及一种小区切换方法、装置、网络设备及存储介质。
背景技术
在无线通信系统中，终端常需要进行小区切换，即从源小区切换到目标小区。为了保证在切换小区的过程中终端的通信不中断，引入了一种双激活协议栈(Dual Active Protocol Stack，DAPS)切换(Handover，HO)技术。基于DAPS HO技术进行小区切换时，终端保持与源小区的连接，向目标小区进行数据同步，实现连接建立，当连接建立完成时，网络设备会先通知源小区切换成功，释放源小区中终端的无线资源和配置信息，然后，通知终端删除源小区的配置信息，释放与源小区的连接。
相关技术中，在连接建立完成后，当终端在目标小区上发生无线链路失败时，终端会基于协议删除源小区和目标小区的配置信息，然后进行网络搜索，再向网络搜索到的新小区发起连接建立过程。
发明内容
本申请实施例提供了一种小区切换方法、装置、网络设备及存储介质，能够降低了网络延迟。所述技术方案如下：
一方面，本申请实施例提供了一种小区切换方法，所述方法由第一网络设备执行，所述第一网络设备为目标小区提供通信服务，所述方法包括：
在接收到终端的配置完成通知的情况下，向所述终端发送第一释放指示，所述第一释放指示指示释放与源小区的连接；
在接收到所述终端针对所述第一释放指示的释放完成通知的情况下，向第二网络设备发送第二释放指示，所述第二释放指示指示释放所述源小区与所述终端的连接，所述第二网络设备为源小区提供通信服务。
另一方面，本申请实施例提供了一种小区切换方法，所述方法由第二网络设备执行，所述第二网络设备为源小区提供通信服务，所述方法包括：
在接收到终端的第二释放指示的情况下，释放源小区与所述终端的连接，所述第二释放指示是所述终端在接收到第一网络设备发送的第一释放指示后，基于所述第一释放指示，释放与所述源小区的连接后发送的，所述第一网络设备用于为目标小区提供通信服务。
另一方面，本申请实施例提供了一种小区切换方法，所述方法由终端执行，所述方法包括：
在切换至目标小区后，向第一网络设备发送配置完成通知，所述第一网络设备用于为目标小区提供通信服务；
在接收到所述第一网络设备发送的第一释放指示的情况下，释放与源小区的连接，并向所述第一网络设备发送第一释放指示的释放完成通知，所述第一释放指示的释放完成通知用于指示所述第一网络设备向第二网络设备发送第二释放指示，所述第二释放指示用于指示所述第二网络设备释放源小区与所述终端的连接。
另一方面，本申请实施例提供了一种小区切换装置，所述装置由第一网络设备执行，所述第一网络设备为目标小区提供通信服务，所述装置包括：
第一发送模块，用于在接收到终端的配置完成通知的情况下，向所述终端发送第一释放指示，所述第一释放指示指示释放与源小区的连接；
第二发送模块，用于在接收到所述终端针对所述第一释放指示的释放完成通知的情况下，向第二网络设备发送第二释放指示，所述第二释放指示指示释放所述源小区与所述终端的连接，所述第二网络设备为源小区提供通信服务。
另一方面，本申请实施例提供了一种小区切换装置，所述装置由第二网络设备执行，所述第二网络设备为源小区提供通信服务，所述装置包括：
第一释放模块，用于在接收到终端的第二释放指示的情况下，释放源小区与所述终端的连接，所述第二释放指示是所述终端在接收到第一网络设备发送的第一释放指示后，基于所述第一释放指示，释放与所述源小区的连接后发送的，所述第一网络设备用于为目标小区提供通信服务。
另一方面，本申请实施例提供了一种小区切换装置，所述装置由终端执行，所述装置包括：
第三发送模块，用于在切换至目标小区后，向第一网络设备发送配置完成通知，所述第一网络设备用于为目标小区提供通信服务；
第二释放模块，用于在接收到所述第一网络设备发送的第一释放指示的情况下，释放与源小区的连接，并向所述第一网络设备发送第一释放指示的释放完成通知，所述第一释放指示的释放完成通知用于指示所述第一网络设备向第二网络设备发送第二释放指示，所述第二释放指示用于指示所述第二网络设备释放源小区与所述终端的连接。
另一方面，本申请实施例提供了一种第一网络设备，所述第一网络设备包括处理器和存储器；所述存储器存储有至少一段程序，所述至少一段程序用于被所述处理器执行以实现如上述任一所述的小区切换方法。
另一方面，本申请实施例提供了一种第二网络设备，所述第二网络设备包括处理器和存储器；所述存储器存储有至少一段程序，所述至少一段程序用于被所述处理器执行以实现如上述任一所述的小区切换方法。
另一方面，本申请实施例提供了一种终端，所述终端包括处理器和存储器；所述存储器存储有至少一段程序，所述至少一段程序用于被所述处理器执行以实现如上述任一所述的小区切换方法。
另一方面，本申请实施例提供了一种计算机可读存储介质，所述计算机可读存储介质存储有至少一段程序，所述至少一段程序用于被处理器执行以实现如上述任一方面所述的第一网络设备侧的小区切换方法。
另一方面，本申请实施例提供了一种计算机可读存储介质，所述计算机可读存储介质存储有至少一段程序，所述至少一段程序用于被处理器执行以实现如上述任一方面所述的第二网络设备侧的小区切换方法。
另一方面，本申请实施例提供了一种计算机可读存储介质，所述计算机可读存储介质存储有至少一段程序，所述至少一段程序用于被处理器执行以实现如上述任一方面所述的终端侧的小区切换方法。
另一方面，本申请实施例提供了一种计算机程序产品，该计算机程序产品包括计算机指令，该计算机指令存储在计算机可读存储介质中；第一网络设备的处理器从计算机可读存储介质读取该计算机指令，处理器执行该计算机指令，使得该第一网络设备执行上述方面提供的小区切换方法。
另一方面，本申请实施例提供了一种计算机程序产品，该计算机程序产品包括计算机指令，该计算机指令存储在计算机可读存储介质中；第二网络设备的处理器从计算机可读存储介质读取该计算机指令，处理器执行该计算机指令，使得该第二网络设备执行上述方面提供的小区切换方法。
另一方面，本申请实施例提供了一种计算机程序产品，该计算机程序产品包括计算机指令，该计算机指令存储在计算机可读存储介质中；终端的处理器从计算机可读存储介质读取该计算机指令，处理器执行该计算机指令，使得该终端执行上述方面提供的小区切换方法。
附图说明
图1示出了本申请一个示例性实施例示出的小区切换方法所涉及的实施环境的示意图；
图2示出了本申请一个示例性实施例示出的小区切换方法的流程图；
图3示出了本申请一个示例性实施例示出的小区切换方法的流程图；
图4示出了本申请一个示例性实施例示出的小区切换方法的流程图；
图5示出了本申请一个示例性实施例示出的小区切换方法的流程图；
图6示出了本申请一个示例性实施例示出的小区切换方法的时序流程图；
图7示出了本申请一个示例性实施例示出的小区切换方法的流程图；
图8示出了本申请一个示例性实施例示出的小区切换方法的时序流程图；
图9示出了本申请一个示例性实施例示出的小区切换装置的框图；
图10示出了本申请一个示例性实施例示出的小区切换装置的框图；
图11示出了本申请一个示例性实施例示出的小区切换装置的框图；
图12示出了本申请一个示例性实施例示出的终端的结构框图；
图13示出了本申请一个示例性实施例示出的网络设备的结构框图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
在本文中提及的“多个”是指两个或两个以上。“和/或”，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。字符“/”一般表示前后关联对象是一种“或”的关系。
下面对本申请涉及到的若干个名词进行简单介绍：
小区：也称蜂窝小区，是指在蜂窝移动通信系统中，其中的一个基站或基站的一部分(扇形天线)所覆盖的区域，在这个区域内终端可以通过无线信道可靠地与基站进行通信。
小区切换：在终端发生移动或者其他情况下，将服务器小区从当前服务小区切换到其他服务小区。其中，切换前的小区称为源小区，切换后的小区称为目标小区。
双激活协议栈切换(Dual Active Protocol Stack Handover，DAPS HO)：一种通信行业中的小区切换标准，能够保证终端在小区切换过程中保持通信。
请参考图1，其示出了本申请一个示例性实施例示出的小区切换方法所涉及的实施环境的示意图。参见图1，该实施环境包括终端10、第一网络设备20和第二网络设备30。其中，终端10、第一网络设备20和第二网络设备30之间均通过网络连接。
该第一网络设备20和第二网络设备30为任一具有无线收发功能的网络设备。例如，该第一网络设备20和第二网络设备30均可以为基站、演进型节点B(evolved Node B，eNB)、下一代节点B(next Generation，gNB)无线保真(Wireless Fidelity，WIFI)系统中的接入点(Access Point，AP)、无线中继节点、无线回传节点、传输点(Transmission Point，TP)或者发送接收点(Transmission and Reception Point，TRP)等。
第一网络设备20和第二网络设备30均能够为终端10分配传输资源，使得终端10能够基于该传输资源与源小区或目标小区进行通信。每个网络设备的覆盖范围能够被划分为至少一个小区。在本申请实施例中，源小区和目标小区可以是同一网络设备或不同网络设备对应的小区。即第一网络设备20和第二网络设备30为同一网络设备或者不同的网络设备，在本申请实施例中，对此不作具体限定。
该终端10为具有无线通信功能的终端10。其中，该终端10可以为手机、平板电脑、具备无线通信功能的电脑或可穿戴设备等。在本申请实施例中，对此不作具体限定。
该小区切换过程可以为主小区群组(Master Cell Group，MCG)切换过程，或者，为辅小区群组(Secondary Cell Group，SCG)变更过程。在本申请实施例中，对此不作具体限定。
请参见图2，其示出了本申请一个示例性实施例示出的小区切换方法的流程图。该方法由第一网络设备执行，该方法包括以下步骤：
步骤S201：在接收到终端的配置完成通知的情况下，向该终端发送第一释放指示，该第一释放指示指示释放与源小区的连接；
步骤S202：在接收到该终端针对该第一释放指示的释放完成通知的情况下，向第二网络设备发送第二释放指示，该第二释放指示指示释放该源小区与该终端的连接，该第二网络设备为源小区提供通信服务。
在一些实施例中，该方法还包括：
在接收到该第二网络设备的切换取消通知的情况下，释放该终端与该目标小区的连接。
在一些实施例中，该在接收到终端的配置完成通知的情况下，向该终端发送第一释放指示之前，该方法还包括：
在接收到该第二网络设备的切换请求的情况下，生成针对该切换请求的切换请求响应，该切换请求用于请求切换至目标小区，该切换请求响应包括该目标小区的第一配置信息；
向该第二网络设备发送切换请求响应。
在一些实施例中，该方法还包括：
在接收到该终端针对该第一释放指示的释放完成通知的情况下，向该第二网络设备发送切换成功通知，该第二网络设备用于基于该切换成功通知反馈序列码信息；
在接收到该第二网络设备的序列码信息的情况下，存储该序列码信息，该序列码信息表示分组数据汇聚协议PDCP的编码信息。
在一些实施例中，该接收该终端针对该第一释放指示的释放完成通知之后，该方法还包括：
向数据管理平台发送路径倒换请求，该路径倒换请求指示切换与终端进行数据交互时使用的服务小区；
接收该数据管理平台发送的路径倒换响应。
在本申请实施例中，由于第一网络设备在小区切换成功时，先指示终端释放连接，在终端释放完成后，才指示第二网络设备释放连接，这样源小区对应的网络设备中能够在切换完成前保留终端的配置信息，从而如果小区切换失败，能够恢复终端与源小区的连接，这样无需重新进行网络搜索和建立连接，进而降低了网络延迟。
请参见图3，其示出了本申请一个示例性实施例示出的小区切换方法的流程图。所述方法由第二网络设备执行，该方法包括以下步骤：
步骤S301：在接收到终端的第二释放指示的情况下，释放源小区与该终端的连接，该第二释放指示是该终端在接收到第一网络设备发送的第一释放指示后，基于该第一释放指示，释放与该源小区的连接后发送的，该第一网络设备用于为目标小区提供通信服务。
在一些实施例中，该方法还包括：
在接收到终端的切换失败通知的情况下，恢复该源小区对该终端的数据传输配置；
在数据传输配置完成的情况下，向该终端发送完成恢复通知。
在一些实施例中，该方法还包括：
在接收到该终端的切换失败通知的情况下，向第一网络设备发送切换取消通知，该切换取消通知指示释放该终端与该目标小区的连接。
在一些实施例中，该恢复该源小区对该终端的数据传输配置，包括：
基于该切换失败通知，获取该源小区的第二配置信息；
基于该第二配置信息，恢复该源小区对该终端的数据传输配置。
在一些实施例中，在接收到终端的第二释放指示的情况下，释放源小区与该终端的连接之前，还包括：
在目标小区满足小区切换条件的情况下，向该第一网络设备发送切换请求，该切换请求用于请求切换至该目标小区；
接收该第一网络设备发送的切换请求响应，该切换请求响应包括该目标小区的第一配置信息。
在一些实施例中，该方法还包括：
在该第一网络设备发送的切换成功通知的情况下，基于该切换成功通知反馈序列码信息。
在本申请实施例中，由于第一网络设备在小区切换成功时，先指示终端释放连接，在终端释放完成后，才指示第二网络设备释放连接，这样源小区对应的网络设备中能够在切换完成前保留终端的配置信息，从而如果小区切换失败，能够恢复终端与源小区的连接，这样无需重新进行网络搜索和建立连接，进而降低了网络延迟。
请参见图4，其示出了本申请一个示例性实施例示出的小区切换方法的流程图。该方法包括以下步骤：
步骤S401：在切换至目标小区后，向第一网络设备发送配置完成通知，所述第一网络设备用于为目标小区提供通信服务；
步骤S402：在接收到所述第一网络设备发送的第一释放指示的情况下，释放与源小区的连接，并向所述第一网络设备发送第一释放指示的释放完成通知，所述第一释放指示的释放完成通知用于指示所述第一网络设备向第二网络设备发送第二释放指示，所述第二释放指示用于指示所述第二网络设备释放源小区与所述终端的连接。
在一些实施例中，所述方法还包括：
在未接收到所述第一网络设备发送的第一释放指示的情况下，向第二网络设备发送切换失败通知，所述切换失败通知用于指示所述第二网络设备恢复源小区对所述终端的数据传输配置；
在接收到所述第二网络设备的完成恢复通知的情况下，恢复与源小区的数据传输配置。
在本申请实施例中，由于第一网络设备在小区切换成功时，先指示终端释放连接，在终端释放完成后，才指示第二网络设备释放连接，这样源小区对应的网络设备中能够在切换完成前保留终端的配置信息，从而如果小区切换失败，能够恢复终端与源小区的连接，这样无需重新进行网络搜索和建立连接，进而降低了网络延迟。
请参见图5，其示出了本申请一个示例性实施例示出的小区切换方法的流程图。在本方法实施例中，以成功切换小区为例进行说明，该方法包括以下步骤：
步骤S501：第一网络设备接收第二网络设备发送的切换请求。
其中，该切换请求用于请求将终端从源小区切换至目标小区。参见图6，图6示出了本申请一个示例性实施例示出的小区切换方法的时序图。在本步骤之前，终端对当前网络环境进行测量，将测量结果上报至第二网络设备，第二网络设备基于该测量结果进行小区切换判定。如果判定为需要进行小区切换，则第二网络设备确定目标小区，向目标小区对应的第一网络设备发送切换请求。相应的，在本步骤中，第一网络设备接收第二网络设备发送的切换请求。
步骤S502：第一网络设备基于该切换请求，向该第二网络设备发送切换请求响应。
其中，该切换请求响应包括该目标小区的第一配置信息。该第一配置信息用于指示目标 小区的配置参数。例如，该第一配置信息包括目标小区的标识、目标小区的小区无线网络临时标识(Cell-Radio Network Temporary Identifier，C-RNTI)、第一网络设备所选的安全算法的安全算法标识符等。
在本步骤中，第一网络设备基于该切换请求，生成针对该切换请求的切换请求响应，将生成的切换请求响应发送给第二网络设备。
步骤S503：第二网络设备接收该切换请求响应，该切换请求响应包括该目标小区的第一配置信息。
步骤S504：第二网络设备基于该切换请求响应中的第一配置信息，向终端发送重配置指令。
在本步骤中，该重配置指令中除包括上述第一配置信息外，还包括配置双激活协议配置参数(dapsConfig-r16)的数据无线承载(Data Radio Bearer，DRB)，还可以包括一组专用的随机接入信道(Random Access Channel，RACH)、与其关联的同步信号和物理广播信道块(Synchronization Signal and PBCH block，SSB)的配置索引和与其关联的终端特征信道状态信息参考信号(Channel State Information Reference Signal，CSI-RS)等。
该重配置指令可以为无线资源控制(Radio Resource Control，RRC)指令等，在本申请实施例中，对此不作具体限定。
步骤S505：终端接收该重配置指令。
步骤S506：终端基于该重配置指令进行数据传输配置。
在本步骤中，终端保持与源小区对应的第二网络设备的连接，基于第一配置信息进行配置。其中，参见图6，终端开启切换定时器T304，基于第一配置信息执行配置、同步和随机接入等过程，从而完成针对目标小区的配置，完成配置后，停止切换定时器T304。
在本步骤中，终端基于该重配置指令将源小区对应的数据传输配置进行修改，使得修改后的数据传输配置能够与目标小区匹配。其中，终端基于该第一配置信息，对重配置分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)实体进行配置，从而使DRB能够满足DAPS的要求，在小区切换过程中，同时承载源小区和目标小区的数据传输。对于非DAPS DRB，终端基于第一配置信息中DRB参数，对终端进行配置，使得DRB满足目标小区的数据传输需求。该非DAPS DRB承载的数据包括：PDCP、RLC状态变量、安全配置以及存储在PDCP和RLC实体中的传输和接收缓冲区中的数据。在本步骤中，终端基于第一配置信息，将上述数据的DRB配置为目标小区对应的DRB。另外，对于每个信令无线承载(Signal Radio Bearers，SRB)，基于该第一配置信息，建立该SRB的无线链路控制(Radio Link Control，RLC)实体，将源小区对应的SRB闲置。
步骤S507：终端在切换至目标小区后，向第一网络设备发送配置完成通知。
该配置完成通知用于指示已完成针对目标小区的配置，能够进行数据传输。
步骤S508：第一网络设备接收该配置完成通知。
步骤S509：第一网络设备向终端发送第一释放指示。
其中，该第一释放指示指示释放与源小区的连接。
步骤S510：终端接收该第一释放指示。
步骤S511：终端基于该第一释放指示，释放终端与源小区的连接。
在本步骤中，终端基于该第一释放指示删除源小区的相关配置，从而释放与源小区的连接。
步骤S512：终端向第一网络设备发送针对该第一释放指示的释放完成通知。
其中，该释放完成通知表示终端当前已释放与源小区的连接。
步骤S513：第一网络设备接收释放完成通知。
步骤S514：第一网络设备向第二网络设备发送第二释放指示，该第二释放指示携带该终端的终端标识。
其中，该第二释放指示指示释放该终端标识对应的终端与源小区的连接。
步骤S515：第二网络设备接收该第二释放指示。
步骤S516：第二网络设备基于该第二释放指示，释放该终端标识对应的终端与源小区的连接。
在本步骤中，第二网络设备基于该终端标识，确定待释放的终端，删除源小区中该终端相关的配置信息。
需要说明的一点是，第一网络设备在向第二网络设备发送第二释放指示之前，先向第二网络设备发送切换完成通知。在接收到第一网络设备的切换完成通知的情况下，第二网络设备获取当前的序列码信息，向第一网络设备发送该序列码信息，在接收到第二网络设备的序列码信息的情况下，第一网络设备存储该序列码信息。其中，该序列码信息可以为分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)序列码(Sequence Number，SN)，用于表示PDCP的编码信息。
另外，第一网络设备还向数据管理平台发送路径倒换请求，该路径倒换请求携带目标小区的标识，数据管理平台基于该路径倒换请求，将数据传输路径由源小区切换至目标小区对应的数据路径，其中，该数据传输路径为数据管理平台与终端进行数据传输使用的传输路径，向第一网络设备发送路径倒换响应，该路径倒换响应指示当前已完成路径倒换，第一网络设备接收该路径倒换响应。第一网络设备基于该路径倒换响应，确定已完成路径切换，以便基于该路径传输数据管理平台和终端之间的数据。其中，该数据管理平台为接入和移动管理功能(Access and Mobility Management Function，AMF)平台或用户面功能(User Plane Function，UPF)平台等，在申请实施例中，对此不作具体限定。
需要说明的一点是，第一网络设备可以先向第二网络设备发送切换成功通知，再向数据管理平台发送路径倒换请求；第一网络设备还可以先向数据管理平台发送路径倒换请求，再向第二网络设备发送切换成功通知；第一网络设备还可以同时向第二网络设备发送切换成功通知和向数据管理平台发送路径倒换请求。在本申请实施例中，对此不作具体限定。
在本申请实施例中，由于第一网络设备在小区切换成功时，先指示终端释放连接，在终端释放完成后，才指示第二网络设备释放连接，这样源小区对应的网络设备中能够在切换完成前保留终端的配置信息，从而如果小区切换失败，能够恢复终端与源小区的连接，这样无需重新进行网络搜索和建立连接，进而降低了网络延迟。
请参见图7，其示出了本申请一个示例性实施例示出的小区切换方法的流程图。在本方法实施例中，以未成功切换小区为例进行说明，该方法包括以下步骤：
步骤S701：第一网络设备接收第二网络设备发送的切换请求。
本步骤与步骤S501的原理相同，在此不再赘述。
步骤S702：第一网络设备基于该切换请求，向该第二网络设备发送切换请求响应。
本步骤与步骤S502的原理相同，在此不再赘述。
步骤S703：第二网络设备接收该切换请求响应，该切换请求响应包括该目标小区的第一配置信息。
步骤S704：第二网络设备基于该切换请求响应中的第一配置信息，向终端发送重配置指令。
本步骤与步骤S504的原理相同，在此不再赘述。
步骤S705：终端接收该重配置指令。
步骤S706：终端基于该重配置指令进行数据传输配置。
本步骤与步骤S506的原理相同，在此不再赘述。
步骤S707：终端在未接收到第一网络设备发送的第一释放指示的情况下，向第二网络设备发送切换失败通知。
在本步骤中，终端确定未从源小区成功切换至目标小区，释放与目标小区的连接。
在一些实施例中，终端未完成数据传输配置，从而切换失败，从而终端未向第一网络设备发送切换完成通知。例如，终端在切换定时器T304的开启时长达到第一预设时长时未完成数据传输配置，则终端确定切换失败。其中，第一预设时长根据需要继续设置，在本申请实施例中，对此不作具体限定。例如，该第一预设时长为1秒或2秒等。
在一些实施例中，终端完成了数据传输配置，向第一网络设备发送配置完成通知，在目标小区发生无线链路失败(Radio Link Failure，RLF)时，终端确定切换失败。例如，在终端向第一网络设备发送配置完成通知后，在第二预设时长内未接收到第一网络设备的通知响应，确定终端在目标小区发生RLF；或者，终端切换至目标性小区后，每隔第三预设时长，向第二网络设备发送检测信息，如果没有接收到该检测信息的应答信息，则确定在目标小区发生RLF。其中，第二预设时长和第三预设时长根据需要进行设置，在本申请实施例中，对第二预设时长和第三预设时长不作具体限定。
在本步骤中，参见图8，终端确定切换失败后，删除目标小区的配置信息。
需要说明的一点是，终端在删除目标小区的配置信息之前，存储有目标小区的配置信息和源小区的配置信息。在本步骤中，终端从存储的目标小区的配置信息和源小区的配置信息中，确定目标小区的配置信息，将该配置信息删除，这样终端中就只存储有源小区的配置信息，从而基于源小区的配置信息向第二网络设备发送切换失败通知，避免了根据已有的协议重新进行网络搜索和建立连接，进而提高了效率。
其中，参见图8，该切换失败通知指示终端当前未从源小区成功切换至目标小区。在本步骤中，终端基于原来存储的源小区的配置信息，向第二网络设备发送切换失败通知。其中，该切换失败通知包括本次切换失败的故障信息，例如，连接超时等。
终端向第二网络设备发送切换通知之前，需要恢复与源小区的数据传输配置。相应的，在本步骤之前，终端对目标小区对应的数据传输配置进行修改，使得修改后的数据传输配置能够与源小区匹配。其中，终端基于该第二配置信息，恢复PDCP实体，从而释放目标小区对应的满足DAPS要求的DRB。对于非DAPS DRB，终端基于第二配置信息中DRB参数，对终端进行配置，使得DRB恢复源小区的数据传输需求。在本步骤中，终端基于第二配置信息，将DRB配置为源小区对应的DRB，恢复源小区对应的数据传输配置。另外，对于每个SRB，基于该第二配置信息，重建该SRB的RLC实体，将之前闲置的SRB恢复使用。
步骤S708：第二网络设备接收该切换失败通知。
步骤S709：第二网络设备基于该切换失败通知，恢复对该源小区的数据传输配置。
在本步骤中，第二网络设备基于该切换失败通知，获取该终端对应的源小区的第二配置信息；基于该第二配置信息，恢复对该源小区的数据传输配置。其中，第二网络设备恢复对源小区的数据传输配置包括：恢复源小区对应的PDCP、DRB和SRB等对应的参数设置。
在本申请实施例中，由于第二网络设备中仍保存着终端对应的源小区的配置信息，从而当终端向第二网络设备发送切换失败通知后，第二网络设备能够恢复对源小区对应的数据传输配置，这样无需再进行重连接建立过程，进而降低了小区切换失败时，终端的通信延迟。
步骤S710：第二网络设备向终端发送完成恢复通知。
第二网络设备基于与原终端的数据传输配置向终端发送完成恢复通知。
步骤S711：终端接收第二网络设备发送的完成恢复通知。
在本步骤中，终端基于第一配置信息进行配置的数据传输配置，对恢复的源小区对应的数据传输配置进行更新。该更新过程与步骤S708中恢复数据传输配置的原理相同，在此不再赘述。
步骤S712：第二网络设备向第一网络设备发送切换取消通知，该切换取消通知包括终端的终端标识。
该切换取消通知用于通知第一网络设备不再进行小区切换。
步骤S713：第一网络设备接收第二网络设备发送的切换取消通知。
步骤S714：第一网络设备基于该切换取消通知，释放终端标识对应的终端与目标小区的连接。
在本步骤中，第一网络设备基于该切换取消通知中的终端标识，确定待释放连接的目标小区，删除该目标小区对应的终端的无线资源和相关配置。
需要说明一点是，第二网络设备在恢复与终端的连接后，终端还可以继续进行测量，相应的，第二网络设备还可以继续基于测量结果判断是否进行小区切换，若仍需要进行小区切换，则第二网络设备从除该目标小区以外的小区中，确定待切换的小区。这样防止了小区切换再次失败，进而提高了小区切换的成功率。
在本申请实施例中，由于第一网络设备在小区切换成功时，先指示终端释放连接，在终端释放完成后，才指示第二网络设备释放连接，这样源小区对应的网络设备中能够在切换完成前保留终端的配置信息，从而如果小区切换失败，能够恢复终端与源小区的连接，这样无需重新进行网络搜索和建立连接，进而降低了网络延迟。
请参考图9，其示出了本申请一个实施例提供的小区切换装置的结构框图。该小区切换装置可以通过软件、硬件或者两者的结合实现成为处理器的全部或一部分。该装置包括：
第一发送模块901，用于在接收到终端的配置完成通知的情况下，向该终端发送第一释放指示，该第一释放指示指示释放与源小区的连接；
第二发送模块902，用于在接收到该终端针对该第一释放指示的释放完成通知的情况下，向第二网络设备发送第二释放指示，该第二释放指示指示释放该源小区与该终端的连接，该第二网络设备为源小区提供通信服务。
在一些实施例中，该装置还包括：
第一释放模块，用于在接收到该第二网络设备的切换取消通知的情况下，释放该终端与该目标小区的连接。
在一些实施例中，该装置还包括：
生成模块，用于在接收到该第二网络设备的切换请求的情况下，生成针对该切换请求的切换请求响应，该切换请求用于请求切换至目标小区，该切换请求响应包括该目标小区的第一配置信息；
第四发送模块，用于向该第二网络设备发送切换请求响应。
在一些实施例中，该装置还包括：
第五发送模块，用于在接收到该终端针对该第一释放指示的释放完成通知的情况下，向该第二网络设备发送切换成功通知，该第二网络设备用于基于该切换成功通知反馈序列码信息；
同步模块，用于在接收到该第二网络设备的序列码信息的情况下，存储该序列码信息，该序列码信息表示分组数据汇聚协议PDCP的编码信息。
在一些实施例中，该装置还包括：
第六发送模块，用于向数据管理平台发送路径倒换请求，该路径倒换请求指示切换与终端进行数据交互时使用的服务小区；
第一接收模块，用于接收该数据管理平台发送的路径倒换响应。
在本申请实施例中，由于第一网络设备在小区切换成功时，先指示终端释放连接，在终端释放完成后，才指示第二网络设备释放连接，这样源小区对应的网络设备中能够在切换完成前保留终端的配置信息，从而如果小区切换失败，能够恢复终端与源小区的连接，这样无需重新进行网络搜索和建立连接，进而降低了网络延迟。
请参考图10，其示出了本申请一个实施例提供的小区切换装置的结构框图。该小区切换 装置可以通过软件、硬件或者两者的结合实现成为处理器的全部或一部分。该装置包括：
第一释放模块1001，用于在接收到终端的第二释放指示的情况下，释放源小区与该终端的连接，该第二释放指示是该终端在接收到第一网络设备发送的第一释放指示后，基于该第一释放指示，释放与该源小区的连接后发送的，该第一网络设备用于为目标小区提供通信服务。
在一些实施例中，该装置还包括：
第一恢复模块，用于在接收到终端的切换失败通知的情况下，恢复该源小区对该终端的数据传输配置；
第七发送模块，用于在数据传输配置完成的情况下，向该终端发送完成恢复通知。
在一些实施例中，该装置还包括：
第八发送模块，用于在接收到该终端的切换失败通知的情况下，向第一网络设备发送切换取消通知，该切换取消通知指示释放该终端与该目标小区的连接。
在一些实施例中，该第一恢复模块，包括：
获取单元，用于基于该切换失败通知，获取该源小区的第二配置信息；
恢复单元，用于基于该第二配置信息，恢复该源小区对该终端的数据传输配置。
在一些实施例中，该装置还包括：
第九发送模块，用于在目标小区满足小区切换条件的情况下，向该第一网络设备发送切换请求，该切换请求用于请求切换至该目标小区；
第二接收模块，用于接收该第一网络设备发送的切换请求响应，该切换请求响应包括该目标小区的第一配置信息；
第十发送模块，用于基于该切换请求响应中的第一配置信息，向终端发送重配置指令。
在一些实施例中，该装置还包括：
反馈模块，用于在接收到该第一网络设备发送的切换成功通知的情况下，基于该切换成功通知反馈序列码信息。
在本申请实施例中，由于第一网络设备在小区切换成功时，先指示终端释放连接，在终端释放完成后，才指示第二网络设备释放连接，这样源小区对应的网络设备中能够在切换完成前保留终端的配置信息，从而如果小区切换失败，能够恢复终端与源小区的连接，这样无需重新进行网络搜索和建立连接，进而降低了网络延迟。
请参考图11，其示出了本申请一个实施例提供的小区切换装置的结构框图。该小区切换装置可以通过软件、硬件或者两者的结合实现成为处理器的全部或一部分。该装置包括：
第三发送模块1101，用于在切换至目标小区后，向第一网络设备发送配置完成通知，该第一网络设备用于为目标小区提供通信服务；
第二释放模块1102，用于在接收到该第一网络设备发送的第一释放指示的情况下，释放与源小区的连接，并向该第一网络设备发送第一释放指示的释放完成通知，该第一释放指示的释放完成通知用于指示该第一网络设备向第二网络设备发送第二释放指示，该第二释放指示用于指示该第二网络设备释放源小区与该终端的连接。
在一些实施例中，该装置还包括：
第十一发送模块，用于在未接收到该第一网络设备发送的第一释放指示的情况下，向第二网络设备发送切换失败通知，该切换失败通知用于指示该第二网络设备恢复源小区对该终端的数据传输配置；
第二恢复模块，用于在接收到该第二网络设备的完成恢复通知的情况下，恢复与源小区的数据传输配置。
在本申请实施例中，由于第一网络设备在小区切换成功时，先指示终端释放连接，在终端释放完成后，才指示第二网络设备释放连接，这样源小区对应的网络设备中能够在切换完 成前保留终端的配置信息，从而如果小区切换失败，能够恢复终端与源小区的连接，这样无需重新进行网络搜索和建立连接，进而降低了网络延迟。
请参考图12，其示出了本申请一个示例性实施例提供的终端1200的结构方框图。终端1200可以是智能手机、平板电脑等具有图像处理功能的终端。本申请中的终端1200可以包括一个或多个如下部件：处理器1210、存储器1220、通信模块1230。
处理器1210可以包括一个或者多个处理核心。处理器1210利用各种接口和线路连接整个终端1200内的各个部分，通过运行或执行存储在存储器1220内的指令、程序、代码集或指令集，以及调用存储在存储器1220内的数据，执行终端1000的各种功能和处理数据。可选地，处理器1210可以采用数字信号处理(Digital Signal Processing，DSP)、现场可编程门阵列(Field－Programmable Gate Array，FPGA)、可编程逻辑阵列(Programmable Logic Array，PLA)中的至少一种硬件形式来实现。处理器1210可集成中央处理器(Central Processing Unit，CPU)、图像处理器(Graphics Processing Unit，GPU)、神经网络处理器(Neural-network Processing Unit，NPU)和调制解调器等中的一种或几种的组合。其中，CPU主要处理操作系统、用户界面和应用程序等；GPU用于负责显示屏所需要显示的内容的渲染和绘制；NPU用于实现人工智能(Artificial Intelligence，AI)功能；调制解调器用于处理无线通信。可以理解的是，上述调制解调器也可以不集成到处理器1210中，单独通过一块芯片进行实现。
存储器1220可以包括随机存储器(Random Access Memory，RAM)，也可以包括只读存储器(Read-Only Memory，ROM)。可选地，该存储器1220包括非瞬时性计算机可读介质(non-transitory computer-readable storage medium)。存储器1220可用于存储指令、程序、代码、代码集或指令集。存储器1220可包括存储程序区和存储数据区，其中，存储程序区可存储用于实现操作系统的指令、用于至少一个功能的指令(比如触控功能、声音播放功能、图像播放功能等)、用于实现下述各个方法实施例的指令等；存储数据区可存储根据终端1200的使用所创建的数据(比如音频数据、电话本)等。
通信模块1230用于发射和接收射频信号，该通信模块可以为无线保真(Wireless Fidelity，WIFI)模块等。
该终端1210还可以包括显示屏，显示屏是用于显示用户界面的显示组件。可选的，该显示屏为具有触控功能的显示屏，通过触控功能，用户可以使用手指、触摸笔等任何适合的物体在显示屏上进行触控操作。
显示屏通常设置在终端1200的前面板。显示屏可被设计成为全面屏、曲面屏、异型屏、双面屏或折叠屏。显示屏还可被设计成为全面屏与曲面屏的结合，异型屏与曲面屏的结合等，本实施例对此不加以限定。
除此之外，本领域技术人员可以理解，上述附图所示出的终端1200的结构并不构成对终端1200的限定，终端1200可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。比如，终端1200中还包括麦克风、扬声器、射频电路、输入单元、传感器、音频电路、电源、蓝牙模块等部件，在此不再赘述。
请参考图13，其示出了本申请一个示例性实施例提供的网络设备1300的结构方框图。该网络设备1300可以为第一网络设备也可以为第二网络设备。该网络设备1300可因配置或性能不同而产生比较大的差异，可以包括一个或一个以上处理器(Central Processing Units，CPU)1310和一个或一个以上的存储器1320，其中，所述存储器1320中存储有至少一条指令，所述至少一条指令由所述处理器1310加载并执行以实现上述各个方法实施例提供的小区切换方法。当然，该网络设备1300还可以具有有线或无线网络接口、键盘以及输入输出接口等部件，以便进行输入输出，该网络设备1300还可以包括其他用于实现设备功能的部件，在此不做赘述。
本申请实施例还提供了一种计算机可读存储介质，该计算机可读存储介质存储有至少一段程序，至少一段程序用于被处理器加载并执行以实现如上各个实施例示出的第一网络设备侧的小区切换方法。
本申请实施例还提供了一种计算机可读存储介质，该存储介质存储有至少一段程序，至少一段程序用于被处理器加载并执行以实现如上各个实施例示出的第二网络设备侧的小区切换方法。
本申请实施例还提供了一种计算机可读存储介质，该存储介质存储有至少一段程序，至少一段程序用于被处理器加载并执行以实现如上各个实施例示出的终端侧的小区切换方法。
本申请实施例提供了一种计算机程序产品，该计算机程序产品包括计算机指令，该计算机指令存储在计算机可读存储介质中；第一网络设备的处理器从计算机可读存储介质读取该计算机指令，处理器执行该计算机指令，使得该第一网络设备执行以实现如上各个实施例示出的小区切换方法。
本申请实施例提供了一种计算机程序产品，该计算机程序产品包括计算机指令，该计算机指令存储在计算机可读存储介质中；第二网络设备的处理器从计算机可读存储介质读取该计算机指令，处理器执行该计算机指令，使得该第二网络设备执行以实现如上各个实施例示出的小区切换方法。
本申请实施例提供了一种计算机程序产品，该计算机程序产品包括计算机指令，该计算机指令存储在计算机可读存储介质中；终端的处理器从计算机可读存储介质读取该计算机指令，处理器执行该计算机指令，使得该终端执行以实现如上各个实施例示出的小区切换方法。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请实施例所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (25)

  1. 一种小区切换方法，所述方法由第一网络设备执行，所述第一网络设备为目标小区提供通信服务，所述方法包括：
    在接收到终端的配置完成通知的情况下，向所述终端发送第一释放指示，所述第一释放指示指示释放与源小区的连接；
    在接收到所述终端针对所述第一释放指示的释放完成通知的情况下，向第二网络设备发送第二释放指示，所述第二释放指示指示释放所述源小区与所述终端的连接，所述第二网络设备为源小区提供通信服务。
  2. 根据权利要求1所述的方法，其中，所述方法还包括：
    在接收到所述第二网络设备的切换取消通知的情况下，释放所述终端与所述目标小区的连接。
  3. 根据权利要求1所述的方法，其中，所述在接收到终端的配置完成通知的情况下，向所述终端发送第一释放指示之前，所述方法还包括：
    在接收到所述第二网络设备的切换请求的情况下，生成针对所述切换请求的切换请求响应，所述切换请求用于请求切换至目标小区，所述切换请求响应包括所述目标小区的第一配置信息；
    向所述第二网络设备发送切换请求响应。
  4. 根据权利要求1所述的方法，其中，所述方法还包括：
    在接收到所述终端针对所述第一释放指示的释放完成通知的情况下，向所述第二网络设备发送切换成功通知，所述第二网络设备用于基于所述切换成功通知反馈序列码信息；
    在接收到所述第二网络设备的序列码信息的情况下，存储所述序列码信息，所述序列码信息表示分组数据汇聚协议PDCP的编码信息。
  5. 根据权利要求1所述的方法，其中，所述接收所述终端针对所述第一释放指示的释放完成通知之后，所述方法还包括：
    向数据管理平台发送路径倒换请求，所述路径倒换请求指示切换与终端进行数据交互时使用的服务小区；
    接收所述数据管理平台发送的路径倒换响应。
  6. 一种小区切换方法，所述方法由第二网络设备执行，所述第二网络设备为源小区提供通信服务，所述方法包括：
    在接收到终端的第二释放指示的情况下，释放源小区与所述终端的连接，所述第二释放指示是所述终端在接收到第一网络设备发送的第一释放指示后，基于所述第一释放指示，释放与所述源小区的连接后发送的，所述第一网络设备用于为目标小区提供通信服务。
  7. 根据权利要求6所述的方法，其中，所述方法还包括：
    在接收到终端的切换失败通知的情况下，恢复所述源小区对所述终端的数据传输配置；
    在数据传输配置完成的情况下，向所述终端发送完成恢复通知。
  8. 根据权利要求6所述的方法，其中，所述方法还包括：
    在接收到所述终端的切换失败通知的情况下，向第一网络设备发送切换取消通知，所述 切换取消通知指示释放所述终端与所述目标小区的连接。
  9. 根据权利要求7所述的方法，其中，所述恢复所述源小区对所述终端的数据传输配置，包括：
    基于所述切换失败通知，获取所述源小区的第二配置信息；
    基于所述第二配置信息，恢复所述源小区对所述终端的数据传输配置。
  10. 根据权利要求6所述的方法，其中，在接收到终端的第二释放指示的情况下，释放源小区与所述终端的连接之前，所述方法还包括：
    在目标小区满足小区切换条件的情况下，向所述第一网络设备发送切换请求，所述切换请求用于请求切换至所述目标小区；
    接收所述第一网络设备发送的切换请求响应，所述切换请求响应包括所述目标小区的第一配置信息；
    基于所述切换请求响应中的第一配置信息，向终端发送重配置指令。
  11. 根据权利要求6所述的方法，其中，所述方法还包括：
    在接收到所述第一网络设备发送的切换成功通知的情况下，基于所述切换成功通知反馈序列码信息。
  12. 一种小区切换方法，所述方法由终端执行，所述方法包括：
    在切换至目标小区后，向第一网络设备发送配置完成通知，所述第一网络设备用于为目标小区提供通信服务；
    在接收到所述第一网络设备发送的第一释放指示的情况下，释放与源小区的连接，并向所述第一网络设备发送针对第一释放指示的释放完成通知，所述第一释放指示的释放完成通知用于指示所述第一网络设备向第二网络设备发送第二释放指示，所述第二释放指示用于指示所述第二网络设备释放源小区与所述终端的连接。
  13. 根据权利要求12所述的方法，其中，所述方法还包括：
    在未接收到所述第一网络设备发送的第一释放指示的情况下，向第二网络设备发送切换失败通知，所述切换失败通知用于指示所述第二网络设备恢复源小区对所述终端的数据传输配置；
    在接收到所述第二网络设备的完成恢复通知的情况下，恢复与源小区的数据传输配置。
  14. 一种小区切换装置，所述装置由第一网络设备执行，所述第一网络设备为目标小区提供通信服务，所述装置包括：
    第一发送模块，用于在接收到终端的配置完成通知的情况下，向所述终端发送第一释放指示，所述第一释放指示指示释放与源小区的连接；
    第二发送模块，用于在接收到所述终端针对所述第一释放指示的释放完成通知的情况下，向第二网络设备发送第二释放指示，所述第二释放指示指示释放所述源小区与所述终端的连接，所述第二网络设备为源小区提供通信服务。
  15. 一种小区切换装置，所述装置由第二网络设备执行，所述第二网络设备为源小区提供通信服务，所述装置包括：
    第一释放模块，用于在接收到终端的第二释放指示的情况下，释放源小区与所述终端的连接，所述第二释放指示是所述终端在接收到第一网络设备发送的第一释放指示后，基于所述第一释放指示，释放与所述源小区的连接后发送的，所述第一网络设备用于为目标小区提 供通信服务。
  16. 一种小区切换装置，所述装置由终端执行，所述装置包括：
    第三发送模块，用于在切换至目标小区后，向第一网络设备发送配置完成通知，所述第一网络设备用于为目标小区提供通信服务；
    第二释放模块，用于在接收到所述第一网络设备发送的第一释放指示的情况下，释放与源小区的连接，并向所述第一网络设备发送第一释放指示的释放完成通知，所述第一释放指示的释放完成通知用于指示所述第一网络设备向第二网络设备发送第二释放指示，所述第二释放指示用于指示所述第二网络设备释放源小区与所述终端的连接。
  17. 一种第一网络设备，所述第一网络设备包括处理器和存储器；所述存储器存储有至少一段程序，所述至少一段程序代码用于被所述处理器执行以实现如权利要求1至5任一项所述的小区切换方法。
  18. 一种第二网络设备，所述第二网络设备包括处理器和存储器；所述存储器存储有至少一段程序，所述至少一段程序代码用于被所述处理器执行以实现如权利要求6至11任一项所述的小区切换方法。
  19. 一种终端，所述终端包括处理器和存储器；所述存储器存储有至少一段程序，所述至少一段程序用于被所述处理器执行以实现如权利要求12至13任一项所述的小区切换方法。
  20. 一种计算机可读存储介质，所述计算机可读存储介质存储有至少一段程序，所述至少一段程序用于被处理器执行以实现如权利要求1至5任一项所述的小区切换方法。
  21. 一种计算机可读存储介质，所述计算机可读存储介质存储有至少一段程序，所述至少一段程序用于被处理器执行以实现如权利要求6至11任一项所述的小区切换方法。
  22. 一种计算机可读存储介质，所述计算机可读存储介质存储有至少一段程序，所述至少一段程序用于被处理器执行以实现如权利要求12至13任一项所述的小区切换方法。
  23. 一种计算机程序产品，所述计算机程序产品包括计算机指令，所述计算机指令存储在计算机可读存储介质中；第一网络设备的处理器从所述计算机可读存储介质读取所述计算机指令，所述处理器执行所述计算机指令，使得所述第一网络设备实现如权利要求1至5任一项所述的小区切换方法。
  24. 一种计算机程序产品，所述计算机程序产品包括计算机指令，所述计算机指令存储在计算机可读存储介质中；第二网络设备的处理器从所述计算机可读存储介质读取所述计算机指令，所述处理器执行所述计算机指令，使得所述第二网络设备实现如权利要求6至11任一项所述的小区切换方法。
  25. 一种计算机程序产品，所述计算机程序产品包括计算机指令，所述计算机指令存储在计算机可读存储介质中；终端的处理器从所述计算机可读存储介质读取所述计算机指令，所述处理器执行所述计算机指令，使得所述终端实现如权利要求12至13任一项所述的小区切换方法。
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114339914A (zh) * 2021-12-31 2022-04-12 哲库科技(北京)有限公司 小区切换方法、装置、网络设备及存储介质
WO2024092654A1 (en) * 2022-11-03 2024-05-10 Nec Corporation Method, device and computer storage medium of communication

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210185571A1 (en) * 2019-12-11 2021-06-17 Qualcomm Incorporated Bandwidth part activation in handover with supplementary links
CN113286331A (zh) * 2020-02-19 2021-08-20 华为技术有限公司 重建立的方法和通信装置
CN113366885A (zh) * 2021-05-07 2021-09-07 北京小米移动软件有限公司 一种释放远端终端设备的方法及其装置
WO2021232617A1 (zh) * 2020-05-21 2021-11-25 Oppo广东移动通信有限公司 无线通信方法和终端设备
CN114339914A (zh) * 2021-12-31 2022-04-12 哲库科技(北京)有限公司 小区切换方法、装置、网络设备及存储介质

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113301618B (zh) * 2017-03-24 2022-10-04 华为技术有限公司 通信方法、网络设备和终端
US10687263B2 (en) * 2018-02-15 2020-06-16 Qualcomm Incorporated Enhanced make-before-break handover
US11190997B2 (en) * 2019-03-27 2021-11-30 Lg Electronics Inc. Method and apparatus for mobility in wireless communication system
WO2021068174A1 (zh) * 2019-10-10 2021-04-15 Oppo广东移动通信有限公司 一种小区连接方法、电子设备及存储介质
KR102340797B1 (ko) * 2019-11-06 2021-12-21 삼성전자주식회사 무선 통신 시스템에서 핸드오버를 수행하는 방법 및 장치
KR20210094955A (ko) * 2020-01-22 2021-07-30 삼성전자주식회사 차세대 이동통신 시스템에서 조건적 핸드오버 (Conditional Handover)와 듀얼 스택 프로토콜 핸드오버 (Dual Stack Protocol Handover) 시 데이터 포워딩 지원 방법
US11595861B2 (en) * 2020-03-27 2023-02-28 Qualcomm Incorporated Status data unit enhancement for retransmission of packets in handover procedure
WO2021202216A1 (en) * 2020-04-02 2021-10-07 Google Llc Dual active protocol stack operation and full configuration
CN112218348A (zh) * 2020-10-16 2021-01-12 京信通信系统（中国）有限公司 一种小区间切换方法、装置、设备及计算机可读存储介质

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210185571A1 (en) * 2019-12-11 2021-06-17 Qualcomm Incorporated Bandwidth part activation in handover with supplementary links
CN113286331A (zh) * 2020-02-19 2021-08-20 华为技术有限公司 重建立的方法和通信装置
WO2021232617A1 (zh) * 2020-05-21 2021-11-25 Oppo广东移动通信有限公司 无线通信方法和终端设备
CN113366885A (zh) * 2021-05-07 2021-09-07 北京小米移动软件有限公司 一种释放远端终端设备的方法及其装置
CN114339914A (zh) * 2021-12-31 2022-04-12 哲库科技(北京)有限公司 小区切换方法、装置、网络设备及存储介质

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