WO2022152084A1 - 小区切换方法、装置及存储介质 - Google Patents

小区切换方法、装置及存储介质 Download PDF

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Publication number
WO2022152084A1
WO2022152084A1 PCT/CN2022/071025 CN2022071025W WO2022152084A1 WO 2022152084 A1 WO2022152084 A1 WO 2022152084A1 CN 2022071025 W CN2022071025 W CN 2022071025W WO 2022152084 A1 WO2022152084 A1 WO 2022152084A1
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WIPO (PCT)
Prior art keywords
cell
terminal
handover
message
rlf
Prior art date
Application number
PCT/CN2022/071025
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English (en)
French (fr)
Inventor
王睿炜
刘爱娟
Original Assignee
大唐移动通信设备有限公司
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Application filed by 大唐移动通信设备有限公司 filed Critical 大唐移动通信设备有限公司
Priority to EP22738965.7A priority Critical patent/EP4280684A1/en
Priority to US18/261,662 priority patent/US20240080720A1/en
Publication of WO2022152084A1 publication Critical patent/WO2022152084A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/36—Reselection control by user or terminal equipment
    • H04W36/362—Conditional handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0064—Transmission or use of information for re-establishing the radio link of control information between different access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0079—Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835—Determination of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00837—Determination of triggering parameters for hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H04W36/185—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection using make before break
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/305—Handover due to radio link failure

Definitions

  • the present application relates to the field of communications, and in particular, to a cell handover method, device, and storage medium.
  • a terminal In a communication system, a terminal is handed over from one cell to another cell during a moving process, so as to ensure the communication quality during the moving process of the terminal.
  • a handover failure or a radio link failure Radio Link Failure (Radio Link Failure, RLF) occurs, the terminal and the cell will exchange air interface messages, and the cells will exchange XN interface messages, so that the network
  • RLF Radio Link Failure
  • the 3rd Generation Partnership Project (3GPP) has introduced the handover enhancement feature of cell handover, including the introduction of Conditional Handover and Dual Active Protocol Stack in cell handover.
  • 3GPP 3rd Generation Partnership Project
  • air interface messages and/or XN interface messages also need to be enhanced.
  • the present application provides a cell handover method, device, and storage medium, which are used to solve the problem that air interface messages and/or XN interface messages need to be enhanced under cell handover with enhanced handover characteristics.
  • the present application provides a cell handover method, which is applied to a terminal, including:
  • the method also includes:
  • the value of the reporting timer is stored as the first duration, and the reporting timer is restarted again;
  • RLF occurs in the second cell
  • an RLF report is generated, and the timing duration is recorded in the RLF report, including:
  • the value of the reporting timer is determined as the second duration, and the first duration and the second duration are recorded in the RLF report.
  • the method further includes:
  • RLF occurs in the second cell
  • an RLF report is generated, and the timing duration is recorded in the RLF report, including:
  • RLF occurs in the second cell, an RLF report is generated, and the value of the reporting timer is recorded as the timing duration in the RLF report.
  • the method also includes:
  • the reporting timer is restarted again.
  • the present application provides a cell handover method, which is applied to a network device, and the method includes:
  • a failure indication message is generated, and the failure indication message is used for parameter optimization of cell handover.
  • the method also includes:
  • the RLF report sent by the terminal is received, the RLF report is added to the failure indication message.
  • the third cell belongs to one of the multiple candidate cells in the CHO, and the method further includes:
  • a failure indication message is generated in the fourth cell, and the fourth cell is another cell other than the third cell among the plurality of candidate cells;
  • connection failure includes handover failure when the terminal switches from the second cell to the third cell, or RLF occurs in the third cell after the terminal successfully switches from the second cell to the third cell.
  • the failure indication message includes one or more of the following: the identification information of the candidate cell to which the terminal is connected in the CHO, whether the terminal is successfully connected to the candidate cell in the CHO, and the candidate cell after the terminal is successfully connected to the candidate cell in the CHO.
  • the identification information of the terminal includes: the identification information of the target cell to which the terminal is successfully connected in the CHO, and/or the identification information of the source cell of the terminal in the CHO.
  • the method also includes:
  • the handover report message includes failure reasons, and the failure reasons include one or more of the following: handover too early, handover too late, handover to wrong cell, handover report message also includes one or more of the following: the terminal connected in CHO The identification information of the candidate cell, whether the terminal is successfully connected to the candidate cell in the CHO, the camping information of the terminal in the candidate cell after the terminal is successfully connected to the candidate cell in the CHO, and the RLF report.
  • the third cell is the target cell in the DAPS handover, and the method further includes:
  • the RLF report sent by the terminal is received, the RLF report is added to the failure indication message;
  • a failure indication message is sent to the second cell through the third cell.
  • the method also includes:
  • a handover report message is generated, and the handover report message includes the identification information of the target cell in the DAPS handover.
  • the present application provides a cell switching device, which is applied to a terminal and includes a memory, a transceiver and a processor:
  • a transceiver for sending and receiving data under the control of the processor
  • a processor that reads the computer program in memory and performs the following operations:
  • processor is also used to perform the following operations:
  • the value of the reporting timer is stored as the first duration, and the reporting timer is restarted again;
  • RLF occurs in the second cell
  • an RLF report is generated, and the timing duration is recorded in the RLF report, including:
  • the value of the reporting timer is determined as the second duration, and the first duration and the second duration are recorded in the RLF report.
  • the processor is further configured to perform the following operations:
  • RLF occurs in the second cell
  • an RLF report is generated, and the timing duration is recorded in the RLF report, including:
  • RLF occurs in the second cell, an RLF report is generated, and the value of the reporting timer is recorded as the timing duration in the RLF report.
  • processor is also used to perform the following operations:
  • the reporting timer is restarted again.
  • the present application provides a cell switching apparatus, which is applied to network equipment, including a memory, a transceiver and a processor:
  • a transceiver for sending and receiving data under the control of the processor
  • a failure indication message is generated, and the failure indication message is used for parameter optimization of cell handover.
  • processor is also used to perform the following operations:
  • the RLF report sent by the terminal is received, the RLF report is added to the failure indication message.
  • the processor is further configured to perform the following operations:
  • a failure indication message is generated in the fourth cell, and the fourth cell is another cell other than the third cell among the plurality of candidate cells;
  • connection failure includes handover failure when the terminal switches from the second cell to the third cell, or RLF occurs in the third cell after the terminal successfully switches from the second cell to the third cell.
  • the failure indication message includes one or more of the following: the identification information of the candidate cell to which the terminal is connected in the CHO, whether the terminal is successfully connected to the candidate cell in the CHO, and the candidate cell after the terminal is successfully connected to the candidate cell in the CHO.
  • the identification information of the terminal includes: the identification information of the target cell to which the terminal is successfully connected in the CHO, and/or the identification information of the source cell of the terminal in the CHO.
  • processor is also used to perform the following operations:
  • the failure report message includes failure reasons, and the failure reasons include one or more of the following: handover is too early, handover is too late, handover to wrong cell, and the handover report message also includes one or more of the following: the terminal connected in the CHO The identification information of the candidate cell, whether the terminal is successfully connected to the candidate cell in the CHO, the camping information of the terminal in the candidate cell after the terminal is successfully connected to the candidate cell in the CHO, and the RLF report.
  • the third cell is the target cell in the DAPS handover
  • the processor is further configured to perform the following operations:
  • the RLF report sent by the terminal is received, the RLF report is added to the failure indication message;
  • a failure indication message is sent to the second cell through the third cell.
  • processor is also used to perform the following operations:
  • a handover report message is generated, and the handover report message includes the identification information of the target cell in the DAPS handover.
  • the present application provides a cell handover device, which is applied to a terminal, including:
  • a first receiving unit configured to receive a first message sent by a first cell, where the first message instructs the terminal to perform a cell handover with enhanced features or a cell handover with non-enhanced features, wherein the cell handover with enhanced features includes conditional handover CHO Or dual activation protocol stack DAPS switching;
  • a first switching unit configured to switch from the first cell to the second cell according to the first message
  • a second receiving unit configured to receive a second message sent by the second cell, where the second message instructs the terminal to perform cell handover with enhanced features
  • a second switching unit configured to switch from the second cell to the third cell according to the second message
  • the RLF report generating unit is configured to generate an RLF report if RLF occurs in the second cell, and record the timing duration in the RLF report, where the timing duration is the duration from when the terminal receives the first message to when the RLF occurs in the second cell.
  • the device further includes:
  • a first restarting unit configured to restart the reporting timer of the terminal when the terminal receives the first message
  • a second restarting unit configured to store the value of the reporting timer as the first duration when the terminal receives the second message, and restart the reporting timer again;
  • RLF report generation unit specifically for:
  • the value of the reporting timer is determined as the second duration, and the first duration and the second duration are recorded in the RLF report.
  • the apparatus when the first message instructs the terminal to perform cell handover with a non-handover enhanced feature, the apparatus further includes:
  • a third restarting unit configured to restart the reporting timer of the terminal when the terminal receives the first message
  • RLF report generation unit specifically for:
  • RLF occurs in the second cell, an RLF report is generated, and the value of the reporting timer is recorded as the timing duration in the RLF report.
  • the device further includes:
  • the fourth restarting unit is configured to restart the reporting timer again after the terminal switches from the second cell to the third cell according to the second message.
  • the present application provides a cell handover apparatus, which is applied to network equipment, including:
  • a first sending unit configured to send a second message to the terminal through the second cell, where the second message instructs the terminal to perform cell handover with enhanced features, wherein the cell handover with enhanced features includes CHO or DAPS handover;
  • the first generating unit is configured to generate a failure indication message if it is detected that the terminal records an RLF report in the process of handover from the second cell to the third cell according to the second message, and the failure indication message is used for parameter optimization of cell handover.
  • the device further includes:
  • the second adding unit is configured to add the RLF report to the failure indication message if the RLF report sent by the terminal is received.
  • the third cell belongs to one of the multiple candidate cells in the CHO, and the device further includes:
  • the second generating unit is configured to generate a failure in the fourth cell if it is detected that a connection failure occurs during the handover of the terminal from the second cell to the third cell according to the second message, and the terminal is connected to the fourth cell after the connection failure an indication message, the fourth cell is another cell in the multiple candidate cells except the third cell;
  • connection failure includes handover failure when the terminal switches from the second cell to the third cell, or RLF occurs in the third cell after the terminal successfully switches from the second cell to the third cell.
  • the failure indication message includes one or more of the following: the identification information of the candidate cell to which the terminal is connected in the CHO, whether the terminal is successfully connected to the candidate cell in the CHO, and the candidate cell after the terminal is successfully connected to the candidate cell in the CHO.
  • the identification information of the terminal includes: the identification information of the target cell where the terminal is successfully connected in the CHO, and/or the identification information of the source cell of the terminal in the CHO.
  • the device further includes:
  • a third generating unit configured to generate a handover report message according to the failure indication message
  • the failure report message includes failure reasons, and the failure reasons include one or more of the following: handover is too early, handover is too late, handover to wrong cell, and the handover report message also includes one or more of the following: the terminal connected in the CHO The identification information of the candidate cell, whether the terminal is successfully connected to the candidate cell in the CHO, the camping information of the terminal in the candidate cell after the terminal is successfully connected to the candidate cell in the CHO, and the RLF report.
  • the third cell is the target cell in the DAPS handover
  • the device further includes:
  • a first adding unit configured to add the RLF report to the failure indication message if the RLF report sent by the terminal is received
  • the second sending unit is configured to send a failure indication message to the second cell through the third cell if the RLF report indicates that RLF occurs in the second cell during the DAPS handover.
  • the device further includes:
  • the fourth generating unit is configured to generate a handover report message according to the failure indication message, where the handover report message includes the identification information of the target cell in the DAPS handover.
  • the present application provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to cause a processor to execute the method described in the first aspect or the second aspect.
  • the present application provides a computer program product comprising instructions that, when executed on a computer, cause the computer to perform the method of the first aspect or the method of the second aspect.
  • the present application provides a communication system, including the terminal described in any of the above and the network device described in any of the above.
  • the present application provides a cell handover method, device and storage medium, in which a terminal switches from a first cell to a second cell according to a received first message, and then performs cell handover with enhanced characteristics according to the received second message
  • a terminal switches from a first cell to a second cell according to a received first message, and then performs cell handover with enhanced characteristics according to the received second message
  • an RLF report is generated and the timing duration in the RLF report is the duration between the terminal receiving the first message and the occurrence of RLF in the second cell.
  • the RLF report is enhanced in the cell handover of the handover enhanced feature, that is, the air interface message in the cell handover of the handover enhanced feature is enhanced, thereby improving the effect of handover parameter optimization based on the air interface message.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application
  • FIG. 2 is an example diagram of a successful handover in a traditional cell handover process
  • Figure 3 is an example diagram of a successful handover in the CHO process
  • Fig. 4 is an example diagram of a successful DAPS handover
  • FIG. 5 is a schematic flowchart of a cell handover method according to an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a cell handover method provided by another embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a cell handover method according to another embodiment of the present application.
  • FIG. 8 is a schematic flowchart of a cell handover method provided by another embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a cell switching apparatus provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a cell switching apparatus provided by another embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a cell switching apparatus provided by another embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a cell switching apparatus provided by another embodiment of the present application.
  • the term "and/or” describes the relationship between related objects, and means that there can be three relationships, for example, A and/or B, which can mean that A exists alone, A and B exist simultaneously, and B exists alone. a situation.
  • the character "/” generally indicates that the associated objects are an "or" relationship.
  • the term “plurality” refers to two or more than two, and other quantifiers are similar.
  • the applicable system may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet Wireless service (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, Long term evolution advanced (LTE-A) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G New Radio (New Radio, NR) system, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband Code Division Multiple Access
  • general packet Wireless service general packet Radio service
  • GPRS general packet Wireless service
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • time division duplex time division duplex
  • TDD Time division duplex
  • the terminal involved in the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the name of the terminal may be different.
  • the terminal may be called user equipment (User Equipment, UE).
  • a wireless terminal may communicate with one or more core networks (Core Network, CN) via a Radio Access Network (RAN), and the wireless terminal may be a mobile terminal, such as a mobile phone (or "cellular" phone) and computers with mobile terminals, which may be portable, pocket-sized, hand-held, computer built-in or vehicle mounted mobile devices, for example, which exchange language and/or data with the wireless access network.
  • Core Network Core Network
  • RAN Radio Access Network
  • a wireless terminal may also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, A remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), and a user device (user device) are not limited in the embodiments of the present application.
  • the network device involved in the embodiments of the present application may be a base station, and the base station may include a plurality of cells providing services for the terminal.
  • the base station may also be called an access point, or may be a device in an access network that communicates with a wireless terminal through one or more sectors on an air interface, or other names.
  • the network equipment can be used to exchange received air frames with Internet Protocol (IP) packets, and act as a router between the wireless terminal and the rest of the access network, which may include the Internet Protocol (IP) communication network.
  • IP Internet Protocol
  • the network devices may also coordinate attribute management for the air interface.
  • the network device involved in the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile Communications (GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA). ), it can also be a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or it can be an evolved network device in a long term evolution (LTE) system (evolutional Node B, eNB or e-NodeB), 5G base station (gNB) in 5G network architecture (next generation system), or Home evolved Node B (HeNB), relay node (relay node) , a home base station (femto), a pico base station (pico), etc., which are not limited in the embodiments of the present application.
  • a network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.
  • One or more antennas can be used between the network device and the terminal for multiple input multiple output (Multi Input Multi Output, MIMO) transmission, and the MIMO transmission can be single user MIMO (Single User MIMO, SU-MIMO) or multi-user MIMO ( Multiple User MIMO, MU-MIMO).
  • MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or diversity transmission, precoding transmission, or beamforming transmission.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application. As shown in FIG. 1 , this embodiment provides a communication system 100 .
  • the communication system 100 includes a network device 110 and a plurality of terminals 120 , wherein, in FIG. 1 , Take three terminals 120 as an example.
  • the terminal 120 performs cell handover as the user's location changes, and switches from the currently connected cell to another cell with better signal quality, so as to ensure the signal quality of the terminal 120 .
  • the terminal and the network device may perform mobility robustness optimization (Mobility Robustness Optimisation, MRO) to assist the network device in optimizing handover parameters.
  • MRO mobility robustness optimization
  • RLF Radio Link Failure
  • the terminal side will measure the cell configured for measurement and record the measurement result, and also record related information such as random access, handover and re-establishment.
  • the terminal After handover failure or RLF, the terminal re-establishes or re-connects to the network through Radio Resource Control (RRC) connection, and notifies the network device that a message related to the handover failure or RLF is recorded. If necessary, obtain a message related to handover failure or RLF from the terminal, and further generate a failure indication (failure indication) message, and may also generate a handover report (handover report) message, so as to perform handover parameters according to the failure indication message and/or the handover report message. optimization.
  • RRC Radio Resource Control
  • the message related to handover failure or RLF recorded by the terminal side may be called an RLF report.
  • connection or disconnection between the terminal and the cell refers to the connection or disconnection between the terminal and the network device corresponding to the cell.
  • Sending a message by a terminal to a cell means that the terminal sends a message to a network device corresponding to the cell.
  • the message sent by the cell to the terminal refers to that the network device corresponding to the cell sends the message to the terminal. In other words, the network device sends the message to the terminal through the cell.
  • the 3rd Generation Partnership Project (3GPP) has introduced the handover enhancement features of cell handover, including Introduced in Conditional Handover and Dual Active Protocol Stack.
  • the MRO process also needs to be enhanced accordingly, and the air interface message and/or XN interface message in the MRO also needs to be enhanced.
  • the air interface message in the MRO is the RLF report, and the XN interface message is a failure. Indication message, handover report message.
  • RLF report traditional cell handover (ie, cell handover without enhanced handover feature), CHO, DAPS handover, failure indication message, and handover report message:
  • the RLF report mainly covers two scenarios of handover failure and RLF, and one RLF report usually records only one scenario.
  • the RLF report includes the measurement result of the previous cell of the terminal, the measurement result of the terminal confirming the handover failure or the adjacent cell after the RLF, the location information of the terminal, the identification information of the failed cell of the terminal, the identification information of the rebuilt cell of the terminal, the timing duration ( Also known as the terminal's reporting timer), the reason for the connection failure, etc.
  • the terminal failure cell is usually the source cell
  • RLF occurs in the cell connected to the terminal
  • the cell where RLF occurs is the terminal failure cell.
  • the re-established cell by the terminal is the cell to which the terminal is re-established or established through the RRC connection after handover failure or RLF occurs in the cell connected to the terminal.
  • the identity information of the cell is, for example, a cell global identity (Cell Global Identity, CGI), or a physical cell identity (Physical Cell Identity, PCI) combined with frequency points.
  • CGI Cell Global Identity
  • PCI Physical Cell Identity
  • FIG. 2 is an example diagram of a successful handover in a conventional cell handover process, that is, a schematic diagram of a cell handover with non-handover enhanced characteristics.
  • the traditional cell handover process includes:
  • the source cell and the target cell send and receive a handover request message and a handover response message, wherein the source cell sends a handover request message to the target cell, and the target cell sends a handover response message to the source cell;
  • the source cell sends a synchronous reconfiguration message to the terminal message to notify the terminal to switch to the target cell;
  • S203 the terminal disconnects from the source cell and successfully switches to the target cell;
  • S204 the target cell sends a terminal context release message to the source cell to instruct the source cell to release the terminal context.
  • the terminal fails to switch from the source cell to the target cell or RLF occurs in the target cell after the terminal successfully switches from the source cell to the target cell, the terminal generates an RLF report and sends an RRC connection re-establishment to another cell or build request.
  • the network device After the terminal successfully establishes an RCC connection with the other cell, the network device knows through the other cell that an RLF report is recorded on the terminal, and can further generate a failure indication message and a handover report message.
  • the failure indication message in the MRO is as follows (the left side of the following table is the message content, and the right side is the explanation of the message content):
  • the handover report message in the MRO is as follows (the left side of the table below is the message content, and the right side is the explanation of the message content):
  • the general idea of CHO is that the network device sends a synchronization reconfiguration message to the terminal in advance through the source cell, and the synchronization reconfiguration message includes one or more candidate cells. Select the target cell in the cell.
  • the network device specifies the target cell through the source cell, and the terminal itself determines the target cell. Compared with the network device determining the target cell, on the one hand, it can more accurately consider the actual situation of the terminal, and on the other hand, it can solve the traditional cell handover.
  • the problem is that the handover effect is not good because the terminal cannot receive the synchronization reconfiguration message due to high-speed movement or cannot receive the synchronization reconfiguration message in time.
  • FIG. 3 is an example diagram of a successful handover in the CHO process. As shown in Figure 3, the CHO process includes:
  • the source cell determines to use CHO; S302, the source cell sends a CHO synchronization reconfiguration message to the terminal to instruct the terminal to perform CHO; S303, when the terminal detects that a certain candidate cell in the CHO synchronization reconfiguration message meets the conditions, the candidate cell The cell acts as the target cell and is handed over to the target cell.
  • the terminal can also select another candidate cell as the target cell without performing RRC.
  • the connection is re-established or established, so the traditional MRO process will not be triggered, but a connection failure does occur when switching to the previous candidate cell, but the network device cannot generate a corresponding failure indication message and a handover report message.
  • FIG. 4 is an example of a successful DAPS handover, including:
  • S401 Send and receive a 0-millisecond handover request and a 0-millisecond handover response between the source cell and the target cell, where 0 ms means that the source cell and the terminal do not disconnect the data transmission link; S402, the source cell sends a 0-millisecond handover to the terminal. Instruction message; S403, the terminal switches to the target cell; S404, after the connection between the terminal and the target cell is successfully established, the target cell can notify the terminal to complete data transmission and instruct the terminal to release the data transmission with the source cell; S405, the terminal stops and Data transmission between source cells, and release the master cell group (Master Cell Group, also known as Main Cell Group, MCG for short) configuration of the source cell.
  • Master Cell Group also known as Main Cell Group, MCG for short
  • the connection failure during the DAPS handover process includes the failure of handover from the source cell to the target cell, or the occurrence of RLF in the target cell after the terminal is successfully handed over from the source cell to the target cell, or RLF occurs in the source cell during the handover process of the terminal from the source cell to the target cell or after the terminal is successfully handed over to the target cell.
  • the terminal After the terminal successfully switches to the target cell and RLF occurs in the source cell, the terminal does not need to re-establish or establish the RRC connection, so the traditional MRO process will not be triggered, that is, the corresponding failure indication message and handover cannot be generated for this connection failure.
  • the report message causes the network device to ignore handover parameter optimization under such connection failures.
  • the timing duration in the RLF report is the duration from when the terminal receives the DAPS handover command to when RLF occurs in the source cell, and cannot reflect the duration of the terminal switching to the source cell and camping on the source cell.
  • the embodiments of the present application provide a cell handover method, apparatus, device, and medium.
  • the XN interface messages ie, failure indication message, handover report message
  • the XN interface messages ie, failure indication message, handover report message
  • FIG. 5 is a schematic flowchart of a cell handover method provided by an embodiment of the present application. As shown in FIG. 5 , the method of this embodiment may include:
  • the network device sends a first message to the terminal through the first cell, where the first message instructs the terminal to perform cell handover with enhanced feature handover or cell handover with non-handover enhanced feature.
  • the cell handover of the handover enhanced feature includes CHO or DAPS handover.
  • the first cell is the source cell where the terminal equipment is located.
  • the network device when the terminal is connected to the network device through the first cell, the network device sends a first message to the terminal through the first cell to instruct the terminal to perform cell handover.
  • the triggering condition for the network device to send the first message is not set here. Restriction, that is, there is no restriction on the cell handover when the terminal meets the conditions, and can refer to CHO handover, DAPS handover or other handovers.
  • the terminal switches from the first cell to the second cell according to the first message.
  • the second cell is a target cell for the terminal device to perform cell handover according to the first message.
  • the first message may include identification information of the second cell. If the first message instructs the terminal to perform CHO, the first message may include identification information of multiple candidate cells, and the second cell belongs to one of the multiple candidate cells in the first message.
  • the terminal performs handover from the first cell to the second cell according to the instruction of the first message to perform the handover of the cell with the enhanced feature or the handover of the cell with the non-enhanced handover feature.
  • the network device After the terminal is successfully connected to the second cell, the network device sends a second message to the terminal through the second cell, where the second message instructs the terminal to perform cell handover with enhanced features.
  • the network device may send a message to the terminal through the second cell.
  • the second message is used to instruct the terminal to perform cell handover with enhanced features, for example, instruct the terminal to perform CHO or instruct the terminal to perform DAPS.
  • the terminal switches from the second cell to the third cell according to the second message.
  • the second message may include identification information of multiple candidate cells, and the third cell belongs to one of the multiple candidate cells. If the second message instructs the terminal to perform DAPS, the third message includes identification information of the third cell.
  • the terminal performs cell handover again according to the second message.
  • the terminal performs cell handover again according to the second message.
  • the terminal performs cell handover from the second cell to the third cell, where the second cell is the source cell in the secondary cell handover, and the third cell is the secondary cell The target cell in handover.
  • the terminal If RLF occurs in the second cell, the terminal generates an RLF report, and records the timing duration in the RLF report, where the timing duration is the duration between the terminal receiving the first message and the occurrence of RLF in the second cell.
  • the terminal when the terminal switches from the second cell to the third cell according to the second message, the terminal probably has not disconnected the connection with the second cell. If RLF occurs in the second cell, the terminal receives a notification that RLF occurs in the second cell. information. The terminal generates an RLF report when receiving the message that RLF occurs in the second cell.
  • the terminal when the second message instructs the terminal to perform DAPS handover, during the process that the terminal switches from the second cell to the third cell through the DAPS handover, the terminal maintains the communication connection with the second cell and the third cell at the same time until the DAPS handover is completed. Only then does the terminal disconnect the communication connection with the second cell. Therefore, in the process that the terminal maintains the communication connection with the second cell and the third cell at the same time, if RLF occurs in the second cell, the terminal generates an RLF report accordingly.
  • the terminal monitors whether there is a suitable candidate cell that can be used as the target cell. , the terminal maintains a communication connection with the second cell. At this time, if RLF occurs in the second cell, the terminal generates an RLF report accordingly, because the terminal is still in the second cell at this time, but only received the handover command but did not meet the CHO execution conditions. The handover to the third cell is actually performed.
  • the terminal when the terminal generates the RLF report, the terminal obtains the duration from when the terminal receives the first message to the occurrence of RLF in the second cell, and records the duration as the timing duration in the RLF report
  • the timing duration is the duration from the time when the terminal performs the cell handover operation to the occurrence of RLF in the cell).
  • the stability of the last cell handover of the terminal that is, the stability of the cell handover performed after receiving the first message, so that the network device can more accurately analyze the occurrence of RLF in the second cell according to the timing duration included in the RLF during the MRO process s reason.
  • the RLF report can also record the measurement result of the second cell, the identification information of the second cell, the occurrence of RLF in the second cell, etc.
  • the RLF report can also record the measurement result of the second cell, the identification information of the second cell, the occurrence of RLF in the second cell, etc.
  • the terminal switches from the first cell to the second cell, and then switches from the second cell to the third cell through the cell handover with enhanced characteristics. After the instruction, it is likely to maintain the communication connection with the second cell. If RLF occurs in the second cell, the terminal will generate an RLF report accordingly, and the time from the terminal receiving the first message to the occurrence of RLF in the second cell is recorded in the RLF report. , in order to improve the accuracy of the timing duration in the RLF report in this scenario, and realize the enhancement of the RLF report.
  • the terminal when the terminal receives the first message, restarts the reporting timer of the terminal; when the terminal receives the second message, stores the value of the reporting timer as the first duration, and restarts the reporting timer again; If RLF occurs in the second cell, when RLF occurs in the second cell, the terminal generates an RLF report, acquires the value of the reporting timer, and determines the acquired value of the reporting timer as the second duration; records the first time in the RLF report duration and second duration.
  • the first duration is the duration from when the terminal receives the first message to when the terminal receives the second message
  • the second duration is the duration from when the terminal receives the second message to when RLF occurs in the second cell. Therefore, by restarting the reporting timer when the terminal receives the cell handover instruction message, recording the value of the reporting timer before restarting, and recording multiple durations in the RLF report, it is possible to record the first received from the terminal in the RLF.
  • the terminal's reporting timer is restarted.
  • the terminal receives the second message, since the second message instructs the terminal to perform cell handover with the enhanced feature of handover, the reporting timer of the terminal is not restarted. If RLF occurs in the second cell, the terminal generates an RLF report, and records the value of the report timer as the timing duration included in the RLF.
  • the reporting timer is restarted again. Therefore, the reporting timer of the terminal is not restarted when receiving the second message, and the reporting timer of the terminal is restarted after the cell handover according to the second message is completed, so as to avoid the failure of the terminal to restart the reporting timer when receiving the second message.
  • the time period from when the terminal receives the first message to when the RLF occurs in the second cell is obtained through the reporting timer.
  • DAPS when the terminal disconnects the connection with the second cell after the terminal successfully switches from the second cell to the third cell according to the second message, it may be considered that the terminal switches from the second cell according to the second message. to the third area to complete.
  • FIG. 6 is a schematic flowchart of a cell handover method provided by another embodiment of the present application. As shown in FIG. 6 , the method of this embodiment may include:
  • the terminal switches from the second cell to the third cell according to the second message.
  • the network device generates a failure indication message if it detects that the terminal records an RLF report in the process of switching from the second cell to the third cell according to the second message.
  • the failure indication message is used for parameter optimization of cell handover, and is also used to indicate that a connection failure occurs between the terminal and the cell during the handover process.
  • the network device may send a message to the terminal through the third cell to inquire the terminal in the process of switching from the second cell to the third cell Is there an RLF report recorded in the .
  • the terminal may send a message to the third cell to inform the third cell that the terminal records the RLF report during the handover from the second cell to the third cell.
  • Network equipment may send a message to the third cell to inform the third cell that the terminal records the RLF report during the handover from the second cell to the third cell.
  • the network device may generate a failure indication message.
  • the network device in the cell handover of the handover enhanced feature, if the network device detects that the terminal records the RLF report in the process of handover from the second cell to the third cell according to the second message, it generates a failure indication message, so as to When no RRC connection re-establishment or establishment occurs, the network device is triggered to generate a failure indication message, that is, MRO is triggered, which enhances the failure indication message and more comprehensively performs the MRO process for connection failures that occur during cell handover with enhanced features.
  • MRO failure indication message
  • the network device After the network device detects that the terminal records the RLF report in the process of switching from the second cell to the third cell according to the second message, if it receives the RLF report sent by the terminal, it adds the RLF report to the failure indication message RLF reporting to enrich failure indication messages.
  • FIG. 7 is a schematic flowchart of a cell handover method provided by another embodiment of the present application. As shown in FIG. 7 , the method of this embodiment may include:
  • the network device sends a second message to the terminal, where the second message is used to instruct the terminal to perform CHO, and the second message includes identification information of multiple candidate cells.
  • the terminal switches from the second cell to the third cell according to the second message, where the third cell belongs to one cell of the multiple candidate cells.
  • the terminal selects the third cell from the multiple candidate cells as the target cell according to the information monitored by itself, and switches from the second cell to the third cell.
  • connection failure of the terminal during the handover from the second cell to the third cell includes: the handover fails when the terminal is handed over from the second cell to the third cell, or the terminal fails to switch from the second cell to the third cell after the terminal successfully switches from the second cell to the third cell.
  • RLF occurs in three cells.
  • the reason for the connection failure in the RLF report is that the handover fails
  • the cell where the terminal fails is the second cell
  • the timing period is the time when the terminal receives the second message and the handover fails. time between occurrences. If RLF occurs in the third cell after the terminal is successfully handed over from the second cell to the third cell, the connection failure reason in the RLF report is RLF, the cell where the terminal fails is the third cell, and the timing period is the period from when the terminal receives the second message to the third cell. The duration of RLF in the cell.
  • the terminal connects to a fourth cell, where the fourth cell is another cell other than the third cell among the multiple candidate cells.
  • the terminal may continue to select the fourth cell from the remaining multiple candidate cells, and connect to the fourth cell.
  • the network device If the network device detects that a connection failure occurs during the handover of the terminal from the second cell to the third cell according to the second message, and the terminal is connected to the fourth cell after the connection failure, the network device generates a failure indication in the fourth cell information.
  • the connecting of the terminal to the fourth cell includes: the terminal is successfully connected to the fourth cell or the terminal is unsuccessfully connected to the fourth cell.
  • a failure indication message is generated in the fourth cell if the network device detects that a connection failure occurs during the handover of the terminal from the second cell to the third cell according to the second message, and the terminal connects to the fourth cell after the connection failure.
  • the terminal when connecting to the fourth cell, may instruct the terminal that a connection failure occurs during the handover from the second cell to the third cell according to the second message, or indicate that the terminal is handing over from the second cell to the third cell.
  • An RLF report is recorded in the process, and after receiving the indication message, the network device generates a failure indication message in the fourth cell.
  • the network device in the CHO handover, if the terminal equipment fails to switch from the source cell (that is, the second cell in this embodiment) to a candidate cell (that is, the third cell in this embodiment), and then connects to another A candidate cell (that is, the fourth cell in this embodiment), the network device generates a failure indication message in the other candidate cell, so that when CHO selects another candidate cell for connection without RRC connection re-establishment or establishment, triggering The network device generates the failure indication message, that is, triggers the MRO, so as to realize the enhancement of the failure indication message, and perform the MRO process for the connection failure occurring in the CHO more comprehensively.
  • the terminal may send an RLF report to the fourth cell, and the network device adds the RLF report received through the fourth cell to the failure indication message to enrich the failure indication message Content.
  • the network device if the network device detects that the handover fails when the terminal switches from the second cell to the third cell according to the second message, for example, the terminal failure cell in the RLF report is the second cell, the network device will use the fourth cell to The failure indication message is sent to the second cell; and/or, if the network device detects that the terminal successfully switches from the second cell to the third cell according to the second message, the third cell sends an RLF, for example, the terminal failure cell in the RLF report is the first cell. three cells, the network device sends the failure indication message to the third cell through the fourth cell. Therefore, a failure indication message is sent to the cell where the failure occurs, so as to optimize the handover parameters in the corresponding cell.
  • the failure indication message includes one or more of the following: identification information of the candidate cell to which the terminal is connected in the CHO, whether the terminal is successfully connected to the candidate cell in the CHO, after the terminal is successfully connected to the candidate cell in the CHO The camping information in the candidate cell, the RLF report, and the identification information of the terminal.
  • the identification information of the terminal includes: the identification information of the target cell to which the terminal is successfully connected in the CHO, and/or the identification information of the source cell of the terminal in the CHO.
  • the camping information in the candidate cell is used to indicate whether the terminal is stably camping after the terminal is successfully connected with the candidate cell. Therefore, the camping information may include the result of whether the terminal is stably camping, for example "Yes” or "No” can also be the duration of the dwell.
  • the identification information of different terminals within the cell is unique.
  • the failure indication message includes one or more of the following: the third The identification information of the cell, the failure identification of the terminal failing to connect with the third cell, the RLF report, and the identification information of the terminal, wherein the identification information of the terminal includes the identification information of the terminal in the fourth cell and/or the identification information of the terminal in the second cell .
  • the failure indication message includes one or more of the following: the identification information of the third cell, the successful identification of the terminal connecting to the third cell, the camping information of the terminal in the third cell, the RLF report, and the identification information of the terminal, wherein the identification information of the terminal includes the identification information of the terminal in the fourth cell Identification information and/or identification information of the terminal in the second cell.
  • the failure indication message includes one or more of the following: the identification information of the third cell, the successful identification of the successful connection between the terminal and the third cell, and the terminal in the third cell.
  • the corresponding identification indication message will be generated when the terminal and the cell re-establish the RRC connection, establish the RRC connection, and connect to the candidate cell in the CHO.
  • the failure indication message is shown in the following table:
  • the network device may also generate a handover report message according to the failure indication message, where the handover report message includes a failure reason, and the failure reasons include one or more of the following: Handover too early, handover too late, handover to wrong cell, the handover report message also includes one or more of the following: the identification information of the candidate cell that the terminal is connected to in the CHO, whether the terminal is successfully connected to the candidate cell in the CHO, and whether the terminal is in the CHO. The camping information and RLF report of the candidate cell after the CHO is successfully connected to the candidate cell.
  • the content related to CHO handover is added in the handover report message, so that after the terminal in CHO fails to connect with a candidate cell and then connects to another candidate cell, it can generate a corresponding response for the connection failure between the terminal in CHO and the candidate cell. Failure indication message and handover report message.
  • the network device when the terminal failure cell in the RLF report is the second cell, the network device sends the failure indication message to the second cell through the fourth cell, and generates a handover report message in the second cell according to the failure indication message.
  • the network device sends the failure indication message to the third cell through the fourth cell, and generates a handover report message in the third cell according to the failure indication message.
  • the network device may also send the handover report message to the second cell through the third cell, so that the second cell can switch to the wrong cell according to premature handover, late handover or handover. Adjust the switching parameters.
  • a corresponding handover report message may be generated according to the failure indication message corresponding to the RRC connection re-establishment, the failure indication message corresponding to the RRC establishment, and the corresponding failure indication message when the terminal connects to the candidate cell in the CHO.
  • the handover report The messages are shown in the following table:
  • FIG. 8 is a schematic flowchart of a cell handover method provided by another embodiment of the present application. As shown in FIG. 8 , the method of this embodiment may include:
  • the network device sends a second message to the terminal, where the second message is used to instruct the terminal to perform DAPS, and the second message includes identification information of the target cell in the DAPS.
  • the terminal switches from the second cell to the third cell according to the second message, where the third cell is the target cell in the DAPS handover.
  • an indication message may be sent to the network device through the third cell to indicate that an RLF report is recorded on the terminal when switching from the second cell to the third cell, and the network device receives the indication message Afterwards, an acquisition request is sent to the terminal to request to acquire the RLF report. In response to the request, the terminal sends an RLF report to the network device.
  • the network device generates a failure indication message in the third cell, and adds an RLF report to the failure indication message, wherein the RLF report indicates that RLF occurs in the second cell during the DAPS handover.
  • RLF occurs in the second cell.
  • the terminal has successfully connected to the third cell, no RRC connection re-establishment or RRC connection establishment is required, but the RLF in the second cell also requires optimization of handover parameters. Therefore, if the network device detects that the terminal records the RLF report when it switches from the second cell to the third cell according to the second message, or detects that the terminal switches from the second cell to the third cell according to the second message, the second cell When RLF occurs, a failure indication message is generated. When receiving the RLF report sent by the terminal, the network device adds the RLF report to the failure indication message.
  • the network device cannot receive the RLF report sent by the terminal, and the network device may record when detecting that the terminal switches from the second cell to the third cell according to the second message.
  • the network device may record when detecting that the terminal switches from the second cell to the third cell according to the second message.
  • a failure indication message is generated, and the failure indication message does not include the RLF report at this time.
  • the network device sends the failure indication message to the second cell through the third cell.
  • the network device detects that the terminal is handed over from the second cell to the third cell RLF occurs in the second cell, a connection failure occurs at this time.
  • the cell is the second cell, and the network device sends a failure indication message to the second cell through the third cell, so as to optimize the handover parameters in the second cell.
  • the network device in the DAPS handover, if the terminal equipment is successfully handed over from the source cell (that is, the second cell in this embodiment) to the target cell (that is, the third cell in this embodiment), but the terminal is disconnected from the source cell If RLF occurs in the source cell before the connection is opened, the network device generates a failure indication message in the target cell and sends the failure indication message to the source cell, so that when no RRC connection re-establishment or establishment occurs, the network device is triggered to generate a failure indication message, that is, triggering MRO, realizes the enhancement of the failure indication message, and performs the MRO process for the connection failure in the DAPS more comprehensively.
  • a failure indication message can be generated according to the RRC connection re-establishment, RRC establishment, terminal connection to the candidate cell in CHO, and DAPS handover failure (including the occurrence of RLF in the source cell).
  • the failure indication message is shown in the following table. :
  • the network device may also generate a handover report message according to the failure indication message, wherein the handover report message includes the identification information of the target cell in the DAPS handover, so that during the handover The identification information of the target cell in the DAPS handover is added to the report message to improve the completeness of the handover report message.
  • the terminal switches from the first cell to the second cell before switching from the second cell to the third cell through the DAPS handover, and RLF occurs in the second cell during the DAPS handover, which may be handover from the first cell to the second cell To the wrong cell, add the target cell in the DAPS handover in the handover report message, and inform the first cell that the target cell is a cell suitable for handover.
  • the handover report message can be generated according to the failure indication message corresponding to the RRC connection re-establishment, the failure indication message corresponding to the RRC establishment, the failure indication message corresponding to the terminal connecting to the candidate cell in the CHO, and the failure indication message corresponding to the DAPS handover failure.
  • the handover report message is shown in the following table:
  • the cell switching apparatus in this embodiment may be a terminal, and the cell switching apparatus may include a transceiver 901 , a processor 902 , and a memory 903 .
  • the transceiver 901 is used to receive and transmit data under the control of the processor 902 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 902 and various circuits of memory represented by memory 903 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 901 may be a number of elements, including transmitters and receivers, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like Transmission medium.
  • the cell switching apparatus may further include a user interface 904.
  • the user interface 904 may also be an interface capable of externally connecting the required equipment, and the connected equipment includes but is not limited to a keypad, a display, a speaker, and a microphone. , joystick, etc.
  • the processor 902 is responsible for managing the bus architecture and general processing, and the memory 903 may store data used by the processor 902 in performing operations.
  • the processor 902 can be a central processing unit (central processing unit, CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable Logic device (Complex Programmable Logic Device, CPLD), the processor can also use a multi-core architecture.
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • FPGA field programmable gate array
  • CPLD Complex Programmable Logic Device
  • the processor 902 invokes the computer program stored in the memory 903 to execute any one of the methods on the terminal provided by the embodiments of the present application according to the obtained executable instructions.
  • the processor and memory may also be physically separated.
  • the processor 902 implements the following operations when executing the computer program stored in the memory 903: receiving a first message sent by the first cell, the first message instructing the terminal to perform cell handover with enhanced features or cell handover with enhanced features without handover,
  • the cell handover of the handover enhanced feature includes conditional handover CHO or dual activation protocol stack DAPS handover; handover from the first cell to the second cell according to the first message; receiving a second message sent by the second cell, the second message instructs the terminal to perform Cell handover with enhanced features; handover from the second cell to the third cell according to the second message, if RLF occurs in the second cell, an RLF report is generated, and the timing duration is recorded in the RLF report, and the timing duration is received from the terminal.
  • the time period between a message and the occurrence of RLF in the second cell is a message sent by the first cell, the first message instructing the terminal to perform cell handover with enhanced features or cell handover with enhanced features without handover
  • the cell handover of the handover enhanced feature
  • the processor 902 is further configured to perform the following operations: when the terminal receives the first message, restart the reporting timer of the terminal; when the terminal receives the second message, store the value of the reporting timer as the first duration , and restart the reporting timer again;
  • RLF occurs in the second cell, generating an RLF report and recording the timing duration in the RLF report, including: if RLF occurs in the second cell, generating an RLF report; determining the value of the reporting timer as the second duration, and recording the timing in the RLF report The first duration and the second duration are recorded in the report.
  • the processor 902 is further configured to perform the following operations: when the terminal receives the first message, restart the reporting timer of the terminal;
  • RLF occurs in the second cell, generating an RLF report and recording the timing duration in the RLF report, including: if RLF occurs in the second cell, generating an RLF report, and recording the value of the reporting timer as the timing duration in the RLF report .
  • the processor 902 is further configured to perform the following operation: after the terminal switches from the second cell to the third cell according to the second message, restart the reporting timer again.
  • an embodiment of the present application provides a cell switching apparatus.
  • the cell switching apparatus in this embodiment may be a network device.
  • the cell switching apparatus includes a transceiver 1001 , a processor 1002 and a memory 1003 .
  • the transceiver 1001 is used to receive and transmit data under the control of the processor 1002 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors represented by the processor 1002 and various circuits of the memory represented by the memory 1003 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 1001 may be multiple elements, ie, including a transmitter and a receiver, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the processor 1002 is responsible for managing the bus architecture and general processing, and the memory 1003 may store data used by the processor 1002 in performing operations.
  • the processor 1002 may be a CPU, an ASIC, an FPGA or a CPLD, and the processor may also adopt a multi-core architecture.
  • the processor 1002 invokes the computer program stored in the memory 1003 to execute any one of the methods related to the network device provided in the embodiments of the present application according to the obtained executable instructions.
  • the processor and memory may also be physically separated.
  • the processor 1002 implements the following operations when executing the computer program stored in the memory 1003: sending a second message to the terminal through the second cell, the second message instructing the terminal to perform cell handover with enhanced characteristics, wherein the cell with enhanced characteristics is switched Handover includes CHO or DAPS handover; if it is detected that the terminal records an RLF report in the process of handover from the second cell to the third cell according to the second message, a failure indication message is generated, and the failure indication message is used for parameter optimization of cell handover.
  • the processor 1002 is further configured to perform the following operation: if the RLF report sent by the terminal is received, add the RLF report to the failure indication message.
  • the third cell belongs to one of the multiple candidate cells in the CHO
  • the processor 1002 is further configured to perform the following operations: A connection failure occurs during the handover to the third cell, and the terminal connects to the fourth cell after the connection failure, then a failure indication message is generated in the fourth cell, where the fourth cell is the candidate cell except the third cell. Another cell; wherein the connection failure includes handover failure when the terminal switches from the second cell to the third cell, or RLF occurs in the third cell after the terminal successfully switches from the second cell to the third cell.
  • the failure indication message includes one or more of the following: the identification information of the candidate cell to which the terminal is connected in the CHO, whether the terminal is successfully connected to the candidate cell in the CHO, and the candidate cell after the terminal is successfully connected to the candidate cell in the CHO.
  • the processor 1002 is further configured to perform the following operations: generate a handover report message according to the failure indication message; wherein, the handover report message includes a failure cause, and the failure cause includes one or more of the following: switching too early, switching too late , handover to the wrong cell, the handover report message also includes one or more of the following: the identification information of the candidate cell that the terminal is connected to in the CHO, whether the terminal is successfully connected to the candidate cell in the CHO, and the terminal is successfully connected to the candidate cell in the CHO. Then the camping information and RLF report in the candidate cell.
  • the third cell is the target cell in the DAPS handover
  • the processor 1002 is further configured to perform the following operations: if the RLF report sent by the terminal is received, add in the failure indication message. RLF report; if the RLF report indicates that RLF occurs in the second cell during the DAPS handover, send a failure indication message to the second cell through the third cell.
  • the processor 1002 is further configured to perform the following operation: generate a handover report message according to the failure indication message, where the handover report message includes identification information of the target cell in the DAPS handover.
  • an embodiment of the present application further provides a cell switching apparatus.
  • the cell switching apparatus in this embodiment may be a terminal, and the cell switching apparatus includes: a first receiving unit 1101 and a first switching unit 1102 , the second receiving unit 1103 , the second switching unit 1104 and the RLF report generating unit 1105 .
  • the first receiving unit 1101 is configured to receive a first message sent by a first cell, where the first message instructs the terminal to perform cell handover with enhanced features or cell handover with non-enhanced features, wherein the cell handover with enhanced features includes conditional handover CHO or dual activation protocol stack DAPS switching;
  • a first switching unit 1102 configured to switch from the first cell to the second cell according to the first message
  • the second receiving unit 1103 is configured to receive a second message sent by the second cell, where the second message instructs the terminal to perform cell handover with enhanced features;
  • a second switching unit 1104 configured to switch from the second cell to the third cell according to the second message
  • the RLF report generating unit 1105 is configured to generate an RLF report if an RLF occurs in the second cell, and record a timing duration in the RLF report, where the timing duration is the duration from when the terminal receives the first message to when the RLF occurs in the second cell.
  • the device further includes:
  • a first restarting unit configured to restart the reporting timer of the terminal when the terminal receives the first message
  • a second restarting unit configured to store the value of the reporting timer as the first duration when the terminal receives the second message, and restart the reporting timer again;
  • RLF report generation unit specifically for:
  • RLF occurs in the second cell
  • an RLF report is generated; the value of the reporting timer is determined as the second duration, and the first duration and the second duration are recorded in the RLF report.
  • the apparatus when the first message instructs the terminal to perform cell handover with a non-handover enhanced feature, the apparatus further includes:
  • a third restarting unit configured to restart the reporting timer of the terminal when the terminal receives the first message
  • the RLF report generation unit 1105 is specifically used for:
  • RLF occurs in the second cell, an RLF report is generated, and the value of the reporting timer is recorded as the timing duration in the RLF report.
  • the device further includes:
  • the fourth restarting unit is configured to restart the reporting timer again after the terminal switches from the second cell to the third cell according to the second message.
  • an embodiment of the present application further provides a cell switching apparatus.
  • the cell switching apparatus in this embodiment may be a network device, and the cell switching apparatus includes: a first sending unit 1201 and a first generating unit 1202.
  • the first sending unit 1201 is configured to send a second message to the terminal through the second cell, where the second message instructs the terminal to perform cell handover with enhanced feature handover, wherein the cell handover with enhanced feature handover includes CHO or DAPS handover;
  • the first generating unit 1202 is configured to generate a failure indication message if it is detected that the terminal records an RLF report in the process of switching from the second cell to the third cell according to the second message, and the failure indication message is used for parameter optimization of the cell handover .
  • the device further includes:
  • the second adding unit is configured to add the RLF report to the failure indication message if the RLF report sent by the terminal is received.
  • the third cell belongs to one of the multiple candidate cells in the CHO, and the device further includes:
  • the second generating unit is configured to generate a failure in the fourth cell if it is detected that a connection failure occurs during the handover of the terminal from the second cell to the third cell according to the second message, and the terminal is connected to the fourth cell after the connection failure an indication message, the fourth cell is another cell in the multiple candidate cells except the third cell;
  • connection failure includes handover failure when the terminal switches from the second cell to the third cell, or RLF occurs in the third cell after the terminal successfully switches from the second cell to the third cell.
  • the failure indication message includes one or more of the following: the identification information of the candidate cell to which the terminal is connected in the CHO, whether the terminal is successfully connected to the candidate cell in the CHO, and the candidate cell after the terminal is successfully connected to the candidate cell in the CHO.
  • the device further includes:
  • a third generating unit configured to generate a handover report message according to the failure indication message
  • the failure report message includes failure reasons, and the failure reasons include one or more of the following: handover is too early, handover is too late, handover to wrong cell, and the handover report message also includes one or more of the following: the terminal connected in the CHO The identification information of the candidate cell, whether the terminal is successfully connected to the candidate cell in the CHO, the camping information of the terminal in the candidate cell after the terminal is successfully connected to the candidate cell in the CHO, and the RLF report.
  • the third cell is the target cell in the DAPS handover
  • the device further includes:
  • a first adding unit configured to add the RLF report to the failure indication message if the RLF report sent by the terminal is received
  • the second sending unit is configured to send a failure indication message to the second cell through the third cell if the RLF report indicates that RLF occurs in the second cell during the DAPS handover.
  • the device further includes:
  • the fourth generating unit is configured to generate a handover report message according to the failure indication message, where the handover report message includes the identification information of the target cell in the DAPS handover.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium.
  • the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .
  • the embodiments of the present application provide a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to make the processor execute any one of the descriptions related to the terminal provided by the embodiments of the present application.
  • the processor can implement all the method steps implemented by the terminal in the above method embodiments, and can achieve the same technical effects, and the same parts and beneficial effects in this embodiment as those in the method embodiments will not be described in detail here.
  • the embodiments of the present application provide a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute any one of the network devices provided by the embodiments of the present application. described method.
  • the processor can implement all the method steps implemented by the network device in the above method embodiments, and can achieve the same technical effects, and the same parts and beneficial effects in this embodiment as those in the method embodiments will not be described in detail here.
  • the processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg, CD, DVD, BD, HVD, etc.), and semiconductor memory (eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)), etc.
  • magnetic storage eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage eg, CD, DVD, BD, HVD, etc.
  • semiconductor memory eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)
  • the embodiments of the present application provide a computer program product containing instructions, when the instructions are run on a computer, the computer can execute all the method steps implemented by the terminal in the above method embodiments, and can achieve the same technical effect , the same parts and beneficial effects in this embodiment as those in the method embodiment will not be described in detail here.
  • an embodiment of the present application provides a computer program product containing instructions, when the instructions are run on a computer, the computer is made to execute all the method steps implemented by the network device in the above method embodiments, and can achieve the same technology Therefore, the same parts and beneficial effects in this embodiment as those in the method embodiment will not be described in detail here.
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.
  • processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the processor-readable memory result in the manufacture of means including the instructions product, the instruction means implements the functions specified in the flow or flow of the flowchart and/or the block or blocks of the block diagram.
  • processor-executable instructions can also be loaded onto a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process that Execution of the instructions provides steps for implementing the functions specified in the flowchart or blocks and/or the block or blocks of the block diagrams.

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Abstract

本申请提供一种小区切换方法、装置及存储介质，该方法包括：接收第一小区发送的第一消息，第一消息指示终端进行切换增强特性的小区切换或者非切换增强特性的小区切换，其中，切换增强特性的小区切换包括条件切换CHO和双激活协议栈DAPS切换；根据第一消息从第一小区切换至第二小区；接收第二小区发送的第二消息，其中，第二消息指示终端进行切换增强特性的小区切换；根据第二消息从第二小区切换至第三小区，如果第二小区发生RLF，则生成RLF报告、并在RLF报告中记录定时时长，定时时长为终端接收到第一消息到第二小区发送RLF的时长。本申请针对切换增强特性的小区切换对空口消息进行改进，以使得空口消息用于切换参数的优化时提高切换参数优化的效果。

Description

小区切换方法、装置及存储介质
本申请要求于2021年1月14日提交中国专利局、申请号为202110049837.5、申请名称为“小区切换方法、装置及存储介质”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
本申请涉及通信领域，尤其涉及一种小区切换方法、装置及存储介质。
背景技术
在通信系统中，终端在移动过程中从一个小区切换至另一个小区，以确保终端移动过程中的通信质量。现有的小区切换中，如果发生切换失败或者无线链路失败(Radio Link Failure，RLF)，终端与小区之间会进行空口消息的交互，小区与小区之间进行XN接口消息的交互，以便网络设备触发调整切换参数。
目前，第三代合作伙伴项目(the 3rd Generation Partnership Project，3GPP)引入了小区切换的切换增强特性，包括在小区切换中引入条件切换(Conditional Handover)和双激活协议栈切换(Dual Active Protocal Stack)。然而，针对切换增强特性的小区切换，空口消息和/或XN接口消息同样需要增强。
发明内容
本申请提供一种小区切换方法、装置及存储介质，用于解决切换增强特性的小区切换下空口消息和/或XN接口消息需要增强的问题。
第一方面，本申请提供一种小区切换方法，应用于终端，包括：
接收第一小区发送的第一消息，第一消息指示终端进行切换增强特性的小区切换或者非切换增强特性的小区切换，其中，切换增强特性的小区切换包括条件切换CHO或者双激活协议栈DAPS切换；
根据第一消息从第一小区切换至第二小区；
接收第二小区发送的第二消息，第二消息指示终端进行切换增强特性的小区切换；
根据第二消息从第二小区切换至第三小区，如果第二小区发生RLF，则生成RLF报告、并在RLF报告中记录定时时长，定时时长为从终端接收到第一消息到第二小区发生RLF之间的时长。
可选的，方法还包括：
在终端接收到第一消息时，重启终端的上报定时器；
在终端接收到第二消息时，将上报定时器的值存储为第一时长，并再次重启上报定时器；
如果第二小区发生RLF，则生成RLF报告、并在RLF报告中记录定时时长，包括：
如果第二小区发生RLF，则生成RLF报告；
将上报定时器的值确定为第二时长，并在RLF报告中记录第一时长和第二时长。
可选的，第一消息指示终端进行非切换增强特性的小区切换时，方法还包括：
在终端接收到第一消息时，重启终端的上报定时器；
如果第二小区发生RLF，则生成RLF报告、并在RLF报告中记录定时时长，包括：
如果第二小区发生RLF，则生成RLF报告，并将上报定时器的值记录为RLF报告中的定时时长。
可选的，方法还包括：
在终端根据第二消息从第二小区切换至第三小区完成后，再次重启上报定时器。
第二方面，本申请提供一种小区切换方法，应用于网络设备，方法包括：
通过第二小区向终端发送第二消息，第二消息指示终端进行切换增强特性的小区切换，其中，切换增强特性的小区切换包括CHO或者DAPS切换；
如果检测到终端在根据第二消息从第二小区切换至第三小区的过程中记录有RLF报告，则生成失败指示消息，失败指示消息用于小区切换的参数优化。
可选的，方法还包括：
如果接收到终端发送的RLF报告，则在失败指示消息添加RLF报告。
可选的，第二消息指示终端进行CHO时，第三小区属于CHO中多个候选小区中的一个小区，方法还包括：
如果检测到终端根据第二消息从第二小区切换至第三小区的过程中发生连接失败、且在连接失败后终端连接至第四小区，则在第四小区生成失败指示消息，第四小区为多个候选小区中除第三小区之外的另一小区；
其中，连接失败包括终端从第二小区切换至第三小区时切换失败、或者终端从第二小区成功切换至第三小区后第三小区发生RLF。
可选的，失败指示消息包括如下一项或多项：终端在CHO中连接的候选小区的标识信息、终端在CHO中与候选小区是否连接成功、终端在CHO中与候选小区连接成功后在候选小区的驻留信息、RLF报告、终端的标识信息；
其中，终端的标识信息包括：终端在CHO中连接成功的目标小区内的标识信息，和/或，终端在CHO中的源小区内的标识信息。
可选的，方法还包括：
根据失败指示消息，生成切换报告消息；
其中，切换报告消息包括失败原因，失败原因包括如下一项或多项：切换过早、切换过晚、切换到错误小区，切换报告消息还包括如下一项或多项：终端在CHO中连接的候选小区的标识信息、终端在CHO中与候选小区是否连接成功、终端在CHO中与候选小区连接成功后在候选小区的驻留信息、RLF报告。
可选的，第二消息指示终端进行DAPS切换时，第三小区为DAPS切换中的目标小区，方法还包括：
如果接收到终端发送的RLF报告，则在失败指示消息添加RLF报告；
如果RLF报告指示DAPS切换中第二小区发生RLF，则通过第三小区将失败指示 消息发送至第二小区。
可选的，方法还包括：
根据失败指示消息，生成切换报告消息，切换报告消息包括DAPS切换中的目标小区的标识信息。
第三方面，本申请提供一种小区切换装置，应用于终端，包括存储器、收发机和处理器：
存储器，用于存储计算机程序；
收发机，用于在处理器的控制下收发数据；
处理器，用于读取存储器中的计算机程序并执行以下操作：
接收第一小区发送的第一消息，第一消息指示终端进行切换增强特性的小区切换或者非切换增强特性的小区切换，其中，切换增强特性的小区切换包括条件切换CHO或者双激活协议栈DAPS切换；
根据第一消息从第一小区切换至第二小区；
接收第二小区发送的第二消息，第二消息指示终端进行切换增强特性的小区切换；
根据第二消息从第二小区切换至第三小区，如果第二小区发生RLF，则生成RLF报告、并在RLF报告中记录定时时长，定时时长为从终端接收到第一消息到第二小区发生RLF之间的时长。
可选的，处理器还用于执行以下操作：
在终端接收到第一消息时，重启终端的上报定时器；
在终端接收到第二消息时，将上报定时器的值存储为第一时长，并再次重启上报定时器；
如果第二小区发生RLF，则生成RLF报告、并在RLF报告中记录定时时长，包括：
如果第二小区发生RLF，则生成RLF报告；
将上报定时器的值确定为第二时长，并在RLF报告中记录第一时长和第二时长。
可选的，第一消息指示终端进行非切换增强特性的小区切换时，处理器还用于执行以下操作：
在终端接收到第一消息时，重启终端的上报定时器；
如果第二小区发生RLF，则生成RLF报告、并在RLF报告中记录定时时长，包括：
如果第二小区发生RLF，则生成RLF报告，并将上报定时器的值记录为RLF报告中的定时时长。
可选的，处理器还用于执行以下操作：
在终端根据第二消息从第二小区切换至第三小区完成后，再次重启上报定时器。
第四方面，本申请提供一种小区切换装置，应用于网络设备，包括存储器、收发机和处理器：
存储器，用于存储计算机程序；
收发机，用于在处理器的控制下收发数据；
处理器，用于读取在存储器的计算机程序并执行以下操作：
通过第二小区向终端发送第二消息，第二消息指示终端进行切换增强特性的小区切换，其中，切换增强特性的小区切换包括CHO或者DAPS切换；
如果检测到终端在根据第二消息从第二小区切换至第三小区的过程中记录有RLF报告，则生成失败指示消息，失败指示消息用于小区切换的参数优化。
可选的，处理器还用于执行以下操作：
如果接收到终端发送的RLF报告，则在失败指示消息添加RLF报告。
可选的，第二消息指示终端进行CHO时，第三小区属于CHO中多个候选小区中的一个小区，处理器还用于执行以下操作：
如果检测到终端根据第二消息从第二小区切换至第三小区的过程中发生连接失败、且在连接失败后终端连接至第四小区，则在第四小区生成失败指示消息，第四小区为多个候选小区中除第三小区之外的另一小区；
其中，连接失败包括终端从第二小区切换至第三小区时切换失败、或者终端从第二小区成功切换至第三小区后第三小区发生RLF。
可选的，失败指示消息包括如下一项或多项：终端在CHO中连接的候选小区的标识信息、终端在CHO中与候选小区是否连接成功、终端在CHO中与候选小区连接成功后在候选小区的驻留信息、RLF报告、终端的标识信息；
其中，终端的标识信息包括：终端在CHO中连接成功的目标小区内的标识信息，和/或，终端在CHO中的源小区内的标识信息。
可选的，处理器还用于执行以下操作：
根据失败指示消息，生成切换报告消息；
其中，失败报告消息包括失败原因，失败原因包括如下一项或多项：切换过早、切换过晚、切换到错误小区，切换报告消息还包括如下一项或多项：终端在CHO中连接的候选小区的标识信息、终端在CHO中与候选小区是否连接成功、终端在CHO中与候选小区连接成功后在候选小区的驻留信息、RLF报告。
可选的，第二消息指示终端进行DAPS切换时，第三小区为DAPS切换中的目标小区，处理器还用于执行以下操作：
如果接收到终端发送的RLF报告，则在失败指示消息添加RLF报告；
如果RLF报告指示DAPS切换中第二小区发生RLF，则通过第三小区将失败指示消息发送至第二小区。
可选的，处理器还用于执行以下操作：
根据失败指示消息，生成切换报告消息，切换报告消息包括DAPS切换中的目标小区的标识信息。
第五方面，本申请提供了一种小区切换装置，应用于终端，包括：
第一接收单元，用于接收第一小区发送的第一消息，第一消息指示终端进行切换增强特性的小区切换或者非切换增强特性的小区切换，其中，切换增强特性的小区切换包括条件切换CHO或者双激活协议栈DAPS切换；
第一切换单元，用于根据第一消息从第一小区切换至第二小区；
第二接收单元，用于接收第二小区发送的第二消息，第二消息指示终端进行切换增强特性的小区切换；
第二切换单元，用于根据第二消息从第二小区切换至第三小区；
RLF报告生成单元，用于如果第二小区发生RLF，则生成RLF报告、并在RLF报告中记录定时时长，定时时长为从终端接收到第一消息到第二小区发生RLF之间的时长。
可选的，装置还包括：
第一重启单元，用于在终端接收到第一消息时，重启终端的上报定时器；
第二重启单元，用于在终端接收到第二消息时，将上报定时器的值存储为第一时长，并再次重启上报定时器；
RLF报告生成单元，具体用于：
如果第二小区发生RLF，则生成RLF报告；
将上报定时器的值确定为第二时长，并在RLF报告中记录第一时长和第二时长。
可选的，第一消息指示终端进行非切换增强特性的小区切换时，装置还包括：
第三重启单元，用于在终端接收到第一消息时，重启终端的上报定时器；
RLF报告生成单元，具体用于：
如果第二小区发生RLF，则生成RLF报告，并将上报定时器的值记录为RLF报告中的定时时长。
可选的，装置还包括：
第四重启单元，用于在终端根据第二消息从第二小区切换至第三小区完成后，再次重启上报定时器。
第六方面，本申请提供了一种小区切换装置，应用于网络设备，包括：
第一发送单元，用于通过第二小区向终端发送第二消息，第二消息指示终端进行切换增强特性的小区切换，其中，切换增强特性的小区切换包括CHO或者DAPS切换；
第一生成单元，用于如果检测到终端在根据第二消息从第二小区切换至第三小区的过程中记录有RLF报告，则生成失败指示消息，失败指示消息用于小区切换的参数优化。
可选的，装置还包括：
第二添加单元，用于如果接收到终端发送的RLF报告，则在失败指示消息添加RLF报告。
可选的，第二消息指示终端进行CHO时，第三小区属于CHO中多个候选小区中的一个小区，装置还包括：
第二生成单元，用于如果检测到终端根据第二消息从第二小区切换至第三小区的过程中发生连接失败、且在连接失败后终端连接至第四小区，则在第四小区生成失败指示消息，第四小区为多个候选小区中除第三小区之外的另一小区；
其中，连接失败包括终端从第二小区切换至第三小区时切换失败、或者终端从第二小区成功切换至第三小区后第三小区发生RLF。
可选的，失败指示消息包括如下一项或多项：终端在CHO中连接的候选小区的标识信息、终端在CHO中与候选小区是否连接成功、终端在CHO中与候选小区连接成功后在候选小区的驻留信息、RLF报告、终端的标识信息；
其中，终端的标识信息包括：终端在CHO中连接成功的目标小区内的标识信息， 和/或，终端在CHO中的源小区内的标识信息。
可选的，装置还包括：
第三生成单元，用于根据失败指示消息，生成切换报告消息；
其中，失败报告消息包括失败原因，失败原因包括如下一项或多项：切换过早、切换过晚、切换到错误小区，切换报告消息还包括如下一项或多项：终端在CHO中连接的候选小区的标识信息、终端在CHO中与候选小区是否连接成功、终端在CHO中与候选小区连接成功后在候选小区的驻留信息、RLF报告。
可选的，第二消息指示终端进行DAPS切换时，第三小区为DAPS切换中的目标小区，装置还包括：
第一添加单元，用于如果接收到终端发送的RLF报告，则在失败指示消息添加RLF报告；
第二发送单元，用于如果RLF报告指示DAPS切换中第二小区发生RLF，则通过第三小区将失败指示消息发送至第二小区。
可选的，装置还包括：
第四生成单元，用于根据失败指示消息，生成切换报告消息，切换报告消息包括DAPS切换中的目标小区的标识信息。
第七方面，本申请提供一种处理器可读存储介质，处理器可读存储介质存储有计算机程序，计算机程序用于使处理器执行第一方面或第二方面所述的方法。
第八方面，本申请提供一种包含指令的计算机程序产品，当指令在计算机上运行时，使得计算机执行如上述第一方面的方法或者如第二方面的方法。
第九方面，本申请提供一种通信系统，包括如上任一所述的终端和如上任一所述的网络设备。
本申请提供一种小区切换方法、装置及存储介质中，终端在根据接收到的第一消息从第一小区切换至第二小区后，再根据接收到的第二消息通过切换增强特性的小区切换从第二小区切换至第三小区的过程中，如果第二小区发生RLF，则生成RLF报告且RLF报告中的定时时长为终端接收第一消息到第二小区发生RLF之间的时长，因此针对切换增强特性的小区切换中对RLF报告进行了增强，也即对切换增强特性的小区切换中的空口消息进行了增强，进而提高依据空口消息进行切换参数优化的效果。
应当理解，上述发明内容部分中所描述的内容并非旨在限定本发明的实施例的关键或重要特征，亦非用于限制本发明的范围。本发明的其它特征将通过以下的描述变得容易理解。
附图说明
为了更清楚地说明本申请或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本申请一实施例提供的应用场景示意图；
图2为传统的小区切换过程中切换成功的示例图；
图3为CHO过程中切换成功的示例图；
图4为DAPS切换成功的示例图；
图5为本申请一实施例提供的一种小区切换方法的流程示意图；
图6为本申请另一实施例提供的一种小区切换方法的流程示意图；
图7为本申请另一实施例提供的一种小区切换方法的流程示意图；
图8为本申请另一实施例提供的一种小区切换方法的流程示意图；
图9为本申请一实施例提供的小区切换装置的结构示意图；
图10为本申请另一实施例提供的小区切换装置的结构示意图；
图11为本申请另一实施例提供的小区切换装置的结构示意图；
图12为本申请另一实施例提供的小区切换装置的结构示意图。
具体实施方式
本申请中术语“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。
本申请实施例中术语“多个”是指两个或两个以上，其它量词与之类似。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，并不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请实施例提供的技术方案可以适用于多种系统，尤其是5G系统。例如适用的系统可以是全球移动通讯(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)通用分组无线业务(general packet radio service，GPRS)系统、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、高级长期演进(long term evolution advanced，LTE-A)系统、通用移动系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)系统、5G新空口(New Radio,NR)系统等。这多种系统中均包括终端和网络设备。系统中还可以包括核心网部分，例如演进的分组系统(Evloved Packet System,EPS)、5G系统(5GS)等。
本申请实施例涉及的终端，可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备等。在不同的系统中，终端的名称可能也不相同，例如在5G系统中，终端可以称为用户设备(User Equipment，UE)。无线终端可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网(Core Network,CN)进行通信，无线终端可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，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。例如，个人通信业务(Personal Communication Service，PCS)电话、无绳电话、会话发 起协议(Session Initiated Protocol，SIP)话机、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)等设备。无线终端也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point)、远程终端(remote terminal)、接入终端(access terminal)、用户终端(user terminal)、用户代理(user agent)、用户装置(user device)，本申请实施例中并不限定。
本申请实施例涉及的网络设备，可以是基站，该基站可以包括多个为终端提供服务的小区。根据具体应用场合不同，基站又可以称为接入点，或者可以是接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备，或者其它名称。网络设备可用于将收到的空中帧与网际协议(Internet Protocol，IP)分组进行相互更换，作为无线终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)通信网络。网络设备还可协调对空中接口的属性管理。例如，本申请实施例涉及的网络设备可以是全球移动通信系统(Global System for Mobile communications，GSM)或码分多址接入(Code Division Multiple Access，CDMA)中的网络设备(Base Transceiver Station，BTS)，也可以是带宽码分多址接入(Wide-band Code Division Multiple Access，WCDMA)中的网络设备(NodeB)，还可以是长期演进(long term evolution，LTE)系统中的演进型网络设备(evolutional Node B，eNB或e-NodeB)、5G网络架构(next generation system)中的5G基站(gNB)，也可以是家庭演进基站(Home evolved Node B，HeNB)、中继节点(relay node)、家庭基站(femto)、微微基站(pico)等，本申请实施例中并不限定。在一些网络结构中，网络设备可以包括集中单元(centralized unit，CU)节点和分布单元(distributed unit，DU)节点，集中单元和分布单元也可以地理上分开布置。
网络设备与终端之间可以各自使用一或多根天线进行多输入多输出(Multi Input Multi Output,MIMO)传输，MIMO传输可以是单用户MIMO(Single User MIMO,SU-MIMO)或多用户MIMO(Multiple User MIMO,MU-MIMO)。根据根天线组合的形态和数量，MIMO传输可以是2D-MIMO、3D-MIMO、FD-MIMO或massive-MIMO，也可以是分集传输或预编码传输或波束赋形传输等。
图1为本申请实施例提供的应用场景的示意图，如图1所示，本实施例提供了一种通信系统100，该通信系统100包括网络设备110和多个终端120，其中，图1中以3个终端120为例。终端120会随着用户的位置变化而发生小区切换，从当前连接的小区切换至与信号质量更好的另一小区，以确保终端120的信号质量。
在小区切换过程中，如果终端与小区发生连接失败，终端和网络设备可以进行移动健壮性优化(Mobility Robustness Optimisation，MRO)，以辅助网络设备优化切换参数。在MRO中，如果终端从源小区切换至目标小区失败，或者终端与源小区连接时源小区发生无线链路失败(Radio Link Failure，RLF)，或者终端与目标小区连接时目标小区发生RLF，则终端侧会对测量配置的小区进行测量并记录测量结果，还会记录随机接入、切换和重建立等相关信息。在切换失败或者RLF后，终端通过无线资源管理(Radio Resource Control，RRC)连接重建立或者建立重新连接至网络，并向网络设备通知自身记录有与切换失败或RLF相关的消息，网络设备根据自身需要，向终 端获取与切换失败或RLF相关的消息，并进一步生成失败指示(failure indication)消息，还可以生成切换报告(handover report)消息，以依据失败指示消息和/或切换报告消息进行切换参数优化。
其中，终端侧记录的与切换失败或RLF相关的消息可称为RLF报告。
其中，终端与小区连接或者断开连接，是指终端与小区所对应的网络设备连接或断开连接。终端向小区发送消息，是指终端向小区所对应的网络设备发送消息。小区向终端发送的消息，是指小区所对应的网络设备向终端发送消息，换句话说，网络设备通过小区向终端发送消息。
为了提高小区切换的成功率和/或降低小区切换过程中对终端通信的不利影响，第三代合作伙伴项目(the 3rd Generation Partnership Project，3GPP)引入了小区切换的切换增强特性，包括在小区切换中引入条件切换(Conditional Handover)和双激活协议栈切换(Dual Active Protocal Stack)。为适应增强切换特性的小区切换，MRO过程也需要进行相应的增强，MRO中的空口消息和/或XN接口消息也需要进行增强，其中，MRO中的空口消息为RLF报告，XN接口消息为失败指示消息、切换报告消息。
为便于理解本申请实施例，以下对RLF报告、传统的小区切换(即非切换增强特性的小区切换)、CHO、DAPS切换、失败指示消息、切换报告消息进行简单描述：
(一)RLF报告
RLF报告主要涵盖切换失败和RLF两种场景，一个RLF报告通常只记录一种场景。通常的，RLF报告中包含终端上一小区的测量结果、终端确认切换失败或RLF后邻小区的测量结果、终端的位置信息、终端失败小区的标识信息、终端重建小区的标识信息、定时时长(又称为终端的上报定时器)、连接失败原因等内容。其中，终端在切换失败时终端失败小区通常为源小区，与终端连接的小区发生RLF时该发生RLF的小区为终端失败小区。终端重建小区为切换失败或与终端连接的小区发生RLF后，终端通过RRC连接重建立或者建立所连接到的小区。小区的标识信息例如为小区全球标识(Cell Global Identity，CGI)，又如为物理小区标识(Physical Cell Identity，PCI)结合频点进行表示。定时时长通过终端的上报定时器的定时过程获得，终端每接收到一次切换指令则重启一次上报定时器。
(二)传统的小区切换
图2为传统的小区切换过程中切换成功的示例图，也即非切换增强特性的小区切换的示意图。如图2所示，传统的小区切换过程包括：
S201、源小区和目标小区进行切换请求消息和切换响应消息的收发，其中，源小区向目标小区发送切换请求消息，目标小区向源小区发送切换响应消息；S202、源小区向终端发送同步重配置消息，以通知终端切换至目标小区；S203、终端断开与源小区的连接并成功切换至目标小区；S204、目标小区向源小区发送终端上下文释放消息，以指示源小区释放终端上下文。
在传统的小区切换过程中，若终端从源小区切换至目标小区失败或者终端从源小区成功切换至目标小区后目标小区发生RLF，则终端生成RLF报告，并向另一小区发出RRC连接重建立或建立请求。在终端与该另一小区成功建立RCC连接后，网络设备通过该另一小区知道终端上记录有RLF报告，可进一步生成失败指示消息和切换报 告消息。
示例性的，MRO中的失败指示消息如下(下表左侧为消息内容，右侧为对消息内容的解释)：
Figure PCTCN2022071025-appb-000001
示例性的，MRO中的切换报告消息如下(下表左侧为消息内容，右侧为对消息内容的解释)：
Figure PCTCN2022071025-appb-000002
(三)CHO
CHO的总体思想是网络设备通过源小区提前向终端下发同步重配置消息，同步重配置消息中包括一个或多个候选小区，终端接收到同步重配置消息后会根据自身监测到的信号在候选小区中选择目标小区。传统的小区切换中由网络设备通过源小区指定目标小区，终端自身确定目标小区相较于网络设备确定目标小区，一方面能够更准确考虑到终端的实际情况，另一方面能够解决传统的小区切换中终端因为高速移动无法接收到或者无法及时接收到同步重配置消息导致切换效果不佳的问题。
图3为CHO过程中切换成功的示例图。如图3所示，CHO过程包括：
S301、源小区确定使用CHO；S302、源小区向终端发送CHO同步重配置消息，以指示终端进行CHO；S303、终端监测到CHO同步重配置消息中的某一候选小区符合条件时，将该候选小区作为目标小区并切换至目标小区。
可见，在CHO过程中，若终端从源小区切换至目标小区失败或者终端从源小区成功切换至目标小区后目标小区发生RLF，终端还可以从选择另一候选小区作为目标小区，而无需进行RRC连接重建立或建立，因而不会触发传统的MRO过程，但在切换至上一候选小区确实发生了连接失败，网络设备却无法生成相应的失败指示消息、切 换报告消息。
(四)DAPS切换
与传统切换不同的是，DAPS切换过程中终端与源小区的数据传输链路并不断开，在终端与目标小区连接成功后终端才断开与源小区之间的数据传输链路。图4为DAPS切换成功的示例图，包括：
S401、源小区与目标小区之间进行0毫秒切换请求和0毫秒切换响应的收发，其中，0毫秒是表示源小区与终端并不断开数据传输链路；S402、源小区向终端发送0毫秒切换指示消息；S403、终端切换至目标小区；S404、在终端与目标小区的连接建立成功后，目标小区可通知终端完成数据传输并指示终端释放与源小区之间的数据传输；S405、终端停止与源小区之间的数据传输，并释放源小区的主小区组(Master Cell Group，或者又称为Main Cell Group，简称MCG)配置。
由于DAPS切换过程中终端与源小区、目标小区同时保持数据连接，DAPS切换过程中的连接失败包括源小区切换至目标小区失败、或者终端从源小区成功切换至目标小区后目标小区发生RLF，或者终端在从源小区切换至目标小区的过程或者成功切换至目标小区后源小区发生RLF。
在终端在成功切换至目标小区后源小区发生RLF后，终端无需进行RRC连接重建立或者建立，因而不会触发传统的MRO过程，也即无法针对这种连接失败生成相应的失败指示消息、切换报告消息，导致网络设备忽视了在这种连接失败下的切换参数优化。同时，在RLF报告中的定时时长是终端在接收到DAPS切换命令到源小区发生RLF的时长，无法反映出终端切换至源小区并在源小区驻留的时长。
为解决上述问题，本申请实施例提供了一种小区切换方法、装置、设备及介质，在切换增强特性的小区切换中，对终端与小区之间(或者终端与网络设备之间)的空口消息(即RLF报告)，和/或，不同的小区之间(或者不同的网络设备之间)的XN接口消息(即失败指示消息、切换报告消息)进行增强，进而提高网络设备进行切换参数优化的效果。
其中，本申请实施例所提供的方法和装置是基于同一申请构思的，由于方法和装置解决问题的原理相似，因此装置和方法的实施可以相互参见，重复之处不再赘述。
图5为本申请一实施例提供的小区切换方法的流程示意图。如图5所示，本实施例的方法可以包括：
S501、网络设备通过第一小区向终端发送第一消息，第一消息指示终端进行切换增强特性的小区切换或者非切换增强特性的小区切换。
其中，切换增强特性的小区切换包括CHO或者DAPS切换。
其中，第一小区为终端设备所在的源小区。
具体的，终端通过第一小区与网络设备连接时，网络设备通过第一小区向终端发送第一消息，以指示终端进行小区切换，例如，在此对网络设备发送第一消息的触发条件不做限制，即对终端在满足如何的条件时进行小区切换不做限制，可参照CHO切换、DAPS切换或其他切换。
S502、终端根据第一消息从第一小区切换至第二小区。
其中，第二小区为终端设备根据第一消息进行小区切换的目标小区。
具体的，如果第一消息指示终端进行非切换增强特性的小区切换或者DAPS切换，则第一消息中可包括第二小区的标识信息。如果第一消息指示终端进行CHO，则第一消息中可包括多个候选小区的标识信息、且第二小区属于第一消息中多个候选小区中的一个小区。
具体的，终端按照第一消息的指示进行切换增强特性的小区切换或进行非增强切换特性的小区切换，从第一小区切换至第二小区。
S503、在终端成功连接至第二小区后，网络设备通过第二小区向终端发送第二消息，第二消息指示终端进行切换增强特性的小区切换。
具体的，在终端成功连接至第二小区后，可能由于终端与第二小区之间的信号质量不佳、终端的位置发生变化已离开第二小区等，网络设备可通过第二小区向终端发送第二消息，以指示终端进行切换增强特征的小区切换，例如指示终端进行CHO或者指示终端进行DAPS。
S504、终端根据第二消息从第二小区切换至第三小区。
其中，如果第二消息指示终端进行CHO，则第二消息中可包括多个候选小区的标识信息，第三小区属于该多个候选小区中的一个。如果第二消息指示终端进行DAPS，则第三消息中包括第三小区的标识信息。
具体的，终端根据第一消息进行小区切换后，根据第二消息再次进行小区切换。在根据第二消息进行小区切换时，按照切换增强特性的小区切换，从第二小区切换至第三小区，其中，第二小区为该次小区切换中的源小区，第三小区为该次小区切换中的目标小区。
S505、如果第二小区发生RLF，则终端生成RLF报告，并在RLF报告中记录定时时长，其中，定时时长为终端接收到第一消息到第二小区发生RLF之间的时长。
具体的，终端根据第二消息从第二小区切换至第三小区时，终端很可能还未断开与第二小区的连接，如果第二小区发生RLF，则终端接收到第二小区发生RLF的消息。终端在接收到第二小区发生RLF的消息时，生成RLF报告。
一示例中，在第二消息指示终端进行DAPS切换时，终端通过DAPS切换从第二小区切换至第三小区的过程中，终端与第二小区和第三小区同时保持通信连接，直至DAPS切换完成后终端才断开与第二小区的通信连接。因此，终端与第二小区和第三小区同时保持通信连接的过程中，若第二小区发生RLF则终端相应生成RLF报告。
另一示例中，在第二消息指示终端进行CHO时，由于CHO切换中网络设备通过第二小区提前向终端发送第二消息，因此在终端监测是否有合适的候选小区可以作为目标小区的过程中，终端与第二小区保持通信连接，此时若第二小区发生RLF，则终端相应生成RLF报告，因为此时终端还在第二小区，只是收到了切换命令但是没有满足CHO执行条件，并没有实际执行切换到第三小区。
具体的，终端在生成RLF报告时，获取从终端接收到第一消息到第二小区发生RLF之间的时长，并将该时长记录为RLF报告中的定时时长
相较于在每次接收到小区切换的指示消息时重启终端的上报定时器、并在小区发生RLF时将上报定时器的值记录为RLF报告中的定时时长的方式(该方式中RLF报告中的定时时长为从终端执行小区切换操作到小区发生RLF之间的时长)，本实施例 在RLF报告中记录从终端接收到第一消息到第二小区发生RLF之间的时长，更能够反映出终端上一次小区切换的稳定情况，即在接收到第一消息后进行的小区切换的稳定情况，以便在MRO过程中网络设备能够依据RLF包括中的定时时长更准确地分析出第二小区发生RLF的原因。
其中，除定时时长外，RLF报告例如还可以记录第二小区的测量结果、第二小区的标识信息、第二小区发生RLF等内容，具体可参照前述有关RLF报告的内容，再次不再赘述。
本实施例中，终端从第一小区切换至第二小区、又通过切换增强特性的小区切换从第二小区切换至第三小区，考虑到终端在切换增强特性的小区切换中，在接收到切换指示后还很可能保持与第二小区的通信连接，如果第二小区发生RLF，则终端会相应生成RLF报告，将从终端接收到第一消息到第二小区发生RLF的时长记录在RLF报告中，以提高该场景下RLF报告中定时时长的准确性，实现对RLF报告的增强。
在一些实施例中，在终端接收到第一消息时，重启终端的上报计时器；在终端接收到第二消息时，将上报定时器的值存储为第一时长，并再次重启上报定时器；如果第二小区发生RLF，则在第二小区发生RLF时，终端生成RLF报告，并获取上报定时器的值，将获取的上报定时器的值确定为第二时长；在RLF报告中记录第一时长和第二时长。
其中，第一时长为从终端接收到第一消息到终端接收到第二消息之间的时长，第二时长为从终端接收到第二消息到第二小区发生RLF之间的时长。因此，通过在终端接收到小区切换的指示消息时重启上报定时器，在重启前记录上报定时器的值，通过在RLF报告中记录多个时长，以实现在RLF中记录从终端接收到第一消息到第二小区发生RLF之间的时长。
在一些实施例中，第一消息指示终端进行非切换增强特性的小区切换的情形下，在终端接收到第一消息时，重启终端的上报定时器。在终端接收第二消息时，由于第二消息指示终端进行切换增强特性的小区切换，不重启终端的上报定时器。如果第二小区发生RLF，则终端生成RLF报告，并将上报定时器的值记录为RLF包括中的定时时长。
其中，通过在终端接收到第一消息的时候重启上报定时器、且在终端接收到第二消息时不重启上报定时器，使得第二小区发生RLF时上报定时器的值为从终端接收到第一消息到第二小区发生RLF的时长，以实现在RLF中记录从终端接收到第一消息到第二小区发生RLF之间的时长。
进一步的，在终端根据第二消息从第二小区切换至第三小区完成后，再次重新重启上报定时器。因此，在接收到第二消息时不重启终端的上报定时器，在根据第二消息进行的小区切换结束后重启终端的上报定时器，避免终端在接收到第二消息时重启上报定时器导致无法通过上报定时器获得从终端接收到第一消息到第二小区发生RLF之间的时长。
一示例中，在CHO中，终端断开与第二小区之间的连接、并根据第二消息从第二小区切换至第三小区时，可认为是终端根据第二消息从第二小区切换至第三小区完成。
另一示例中，在DAPS中，终端根据第二消息从第二小区成功切换至第三小区后 终端断开与第二小区之间的连接时，可认为终端根据第二消息从第二小区切换至第三小区完成。
图6为本申请另一实施例提供的小区切换方法的流程示意图。如图6所示，本实施例的方法可以包括：
S601、网络设备向终端发送的第二消息，第二消息用于指示终端进行切换增强特性的小区切换。
S602、终端根据第二消息从第二小区切换至第三小区。
其中，S601和S602的实现原理和过程可参见前述实施例，不再赘述。
S603、网络设备如果检测到终端在根据第二消息从第二小区切换至第三小区的过程中记录有RLF报告，则生成失败指示消息。
其中，失败指示消息用于小区切换的参数优化，还用于指示在切换过程中终端与小区之间发生连接失败。
一示例中，终端根据第二消息从第二小区成功切换至第三小区后，例如，网络设备可以通过第三小区向终端发送消息，以询问终端在从第二小区切换至第三小区的过程中是否记录有RLF报告。
另一示例中，终端在成功切换至第三小区后，可向第三小区发送消息，以通过第三小区将终端在从第二小区切换至第三小区的过程中记录有RLF报告的情况告知网络设备。
具体的，网络设备如果检测到终端在根据第二消息从第二小区切换至第三小区的过程中记录有RLF报告，例如上述实施例中第二小区发生RLF时终端所生成的RLF报告，则网络设备可生成失败指示消息。
本实施例中，在切换增强特性的小区切换中，网络设备如果检测到终端在根据第二消息从第二小区切换至第三小区的过程中记录有RLF报告，则生成失败指示消息，从而在未发生RRC连接重建立或建立时触发网络设备生成失败指示消息，即触发MRO，实现对失败指示消息的增强，更全面地对切换增强特性的小区切换中发生的连接失败进行MRO过程。
在一些实施例中，网络设备检测到终端在根据第二消息从第二小区切换至第三小区的过程中记录有RLF报告后，如果接收到终端发送的RLF报告，则在失败指示消息中添加RLF报告，以丰富失败指示消息。
图7为本申请另一实施例提供的小区切换方法的流程示意图。如图7所示，本实施例的方法可以包括：
S701、网络设备向终端发送第二消息，其中，第二消息用于指示终端进行CHO，第二消息中包括多个候选小区的标识信息。
其中，S701的实现原理和过程可参见前述实施例，不再赘述。
S702、终端根据第二消息从第二小区切换至第三小区，第三小区属于多个候选小区的一个小区。
具体的，终端在接收到第二消息后根据自身监测到的信息，从多个候选小区中选择第三小区作为目标小区，从第二小区切换至第三小区。
S703、如果终端根据第二消息从第二小区切换至第三小区的过程中发生连接失败， 则生成RLF报告。
其中，终端在从第二小区切换至第三小区的过程中发生连接失败，包括：终端从第二小区切换至第三小区时切换失败、或者终端从第二小区成功切换至第三小区后第三小区发生RLF。
具体的，如果终端从第二小区切换至第三小区时切换失败，则RLF报告中的连接失败原因为切换失败，终端失败小区为第二小区，定时时长为终端接收到第二消息到切换失败发生之间的时长。如果终端从第二小区成功切换至第三小区后第三小区发生RLF，则RLF报告中的连接失败原因为RLF，终端失败小区为第三小区，定时时长为终端接收到第二消息到第三小区发生RLF的时长。
S704、终端连接至第四小区，其中，第四小区为多个候选小区中除第三小区之外的另一个小区。
具体的，在终端从第二小区切换至第三小区发送连接失败时，终端还可继续从剩下的多个候选小区中挑选第四小区，并连接至第四小区。
S705、如果网络设备检测到终端根据第二消息从第二小区切换至第三小区的过程中发生连接失败、且在连接失败后终端连接至第四小区，则网络设备在第四小区生成失败指示消息。
其中，终端连接至第四小区包括：终端成功连接至第四小区或者终端未成功连接至第四小区。
具体的，如果网络设备检测到终端根据第二消息从第二小区切换至第三小区的过程中发生连接失败、且在连接失败后终端连接至第四小区，则在第四小区生成失败指示消息。
作为示例的，终端在连接至第四小区时可以指示终端在根据第二消息从第二小区切换至第三小区的过程中发生连接失败，或者指示终端在从第二小区切换至第三小区的过程中记载有RLF报告，网络设备在接收到指示消息后，在第四小区生成失败指示消息。
本实施例中，在CHO切换中，如果终端设备从源小区(即本实施例中的第二小区)切换至一个候选小区(即本实施例中的第三小区)失败，再连接至另一个候选小区(即本实施例中的第四小区)，则网络设备在该另一候选小区生成失败指示消息，从而在CHO选择另一个候选小区进行连接而未发生RRC连接重建立或建立时，触发网络设备生成失败指示消息，即触发MRO，实现对失败指示消息的增强，更全面地对CHO中发生的连接失败进行MRO过程。
在一些实施例中，如果终端成功连接至第四小区，则终端可将RLF报告发送至第四小区，网络设备将通过第四小区接收到的RLF报告添加至失败指示消息，以丰富失败指示消息的内容。
在一些实施例中，如果网络设备检测到终端根据第二消息从第二小区切换至第三小区时切换失败，例如RLF报告中的终端失败小区为第二小区，则网络设备通过第四小区将失败指示消息发送给第二小区；和/或，如果网络设备检测到终端根据第二消息从第二小区成功切换至第三小区后第三小区发送RLF，例如RLF报告中的终端失败小区为第三小区，则网络设备通过第四小区将失败指示消息发送给第三小区。因此，将 失败指示消息发送给发生失败的小区，以便在相应的小区进行切换参数的优化。
在一些实施例中，失败指示消息包括如下一项或多项：终端在CHO中连接的候选小区的标识信息、终端在CHO中与候选小区是否连接成功、终端在CHO中与候选小区连接成功后在候选小区的驻留信息、RLF报告、终端的标识信息。其中，终端的标识信息包括：终端在CHO中连接成功的目标小区内的标识信息，和/或，终端在CHO中的源小区内的标识信息。
可选的，终端在CHO中与候选小区连接成功后在候选小区的驻留信息用于指示终端与候选小区连接成功后是否稳定驻留，因此驻留信息可以包括是否稳定驻留的结果，例如“是”或“否”，也可以是驻留的时长。
其中，在一个小区内，不同的终端在该小区内的标识信息唯一。
以图7所示实施例为例，如果终端在从第二小区切换至第三小区时切换失败并在失败后成功连接至第四小区，则失败指示消息包括如下一项或多项：第三小区的标识信息、终端与第三小区连接失败的失败标识、RLF报告、终端的标识信息，其中，终端的标识信息包括终端在第四小区的标识信息和/或终端在第二小区的标识信息。
以图7所示实施例为例，如果终端在第二小区成功切换至第三小区后第三小区发生RLF并在失败后成功连接至第四小区，则失败指示消息包括如下一项或多项：第三小区的标识信息、终端与第三小区连接成功的成功标识、终端在第三小区的驻留信息、RLF报告、终端的标识信息，其中，终端的标识信息包括终端在第四小区的标识信息和/或终端在第二小区的标识信息。
以图6所示实施例为例，如果终端在通过传统切换从第一小区切换至第二小区、又通过CHO从第二小区切换至第三小区，在通过CHO从第二小区切换成第三小区时第二小区发生RLF、且终端成功切换至第三小区，则失败指示消息包括如下一项或多项：第三小区的标识信息、终端与第三小区连接成功的成功标识、终端在第三小区的驻留信息、RLF报告、终端的标识信息，其中，终端的标识信息包括终端在第三小区的标识信息和/或终端在第二小区的标识信息。
结合网络设备在终端与小区进行RRC连接重建立、RRC连接建立、CHO中连接至候选小区时会生成相应的识别指示消息，作为示例的，失败指示消息如下表所示：
Figure PCTCN2022071025-appb-000003
Figure PCTCN2022071025-appb-000004
在一些实施例中，网络设备在通过第四小区生成失败指示消息后，还可以根据失败指示消息，生成切换报告消息，其中，切换报告消息包括失败原因，失败原因包括如下一项或多项：切换过早、切换过晚、切换到错误小区，切换报告消息还包括如下一项或多项：终端在CHO中连接的候选小区的标识信息、终端在CHO中与候选小区是否连接成功、终端在CHO中与候选小区连接成功后在候选小区的驻留信息、RLF报告。因此，在切换报告消息中增加了有关CHO切换的内容，使得CHO中终端与一候选小区连接失败后再连接至另一候选小区后，能够针对CHO中终端与候选小区发生的连接失败生成相应的失败指示消息和切换报告消息。
其中，在RLF报告中的终端失败小区为第二小区时，网络设备通过第四小区将失败指示消息发送给第二小区，并在第二小区根据失败指示消息生成切换报告消息。在RLF报告中的终端失败小区为第三小区时，网络设备通过第四小区将失败指示消息发送给第三小区，并在第三小区根据失败指示消息生成切换报告消息。
可选的，网络设备在第三小区生成切换报告消息时，还可通过第三小区将切换报告消息发送给第二小区，以便第二小区在根据过早切换、过晚切换或者切换至错误小区进行切换参数调整。
结合网络设备可以根据在RRC连接重建立对应的失败指示消息、RRC建立对应的失败指示消息、CHO中终端连接至候选小区时对应的失败指示消息生成对应的切换报告消息，作为示例的，切换报告消息如下表所示：
Figure PCTCN2022071025-appb-000005
Figure PCTCN2022071025-appb-000006
图8为本申请另一实施例提供的小区切换方法的流程示意图。如图8所示，本实施例的方法可以包括：
S801、网络设备向终端发送第二消息，其中，第二消息用于指示终端进行DAPS，第二消息中包括DAPS中目标小区的标识信息。
S802、终端根据第二消息从第二小区切换至第三小区，其中，第三小区为DAPS切换中的目标小区。
S803、如果第二小区发生RLF，则终端生成RLF报告。
其中，S801～S803的实现过程可参照前述实施例的描述，不再赘述。
S804、终端成功切换至第三小区后，将RLF报告发送给网络设备。
例如，终端成功切换至第三小区后，可通过第三小区向网络设备发送指示消息，以指示终端上在从第二小区切换至第三小区时记录有RLF报告，网络设备接收到该指示消息后，向终端发送获取请求，以请求获取RLF报告。终端响应于该请求，向网络设备发送RLF报告。
S805、网络设备在第三小区生成失败指示消息，并在失败指示消息中添加RLF报告，其中，RLF报告指示DAPS切换中第二小区发生RLF。
具体的，终端在进行DAPS切换时第二小区发生RLF，虽然终端已成功连接至第三小区，无需进行RRC连接重建立或RRC连接建立，但针对第二小区发生RLF也需要切换参数的优化。因此，网络设备如果检测到终端在根据第二消息从第二小区切换至第三小区时记录有RLF报告、或者检测到终端在根据第二消息从第二小区切换至第三小区时第二小区发生RLF，则生成失败指示消息。网络设备在接收到终端发送的RLF报告时，将RLF报告添加至失败指示消息。
可选的，如果终端未能成功连接至第三小区，则网络设备无法接收到终端发送的RLF报告，网络设备可在检测到终端在根据第二消息从第二小区切换至第三小区时记录有RLF报告、或者检测到终端在根据第二消息从第二小区切换至第三小区时第二小区发生RLF的情形下，生成失败指示消息，此时失败指示消息中不包括RLF报告。
S806、网络设备通过第三小区将失败指示消息发送给第二小区。
具体的，在RLF报告指示DAPS切换中第二小区发生RLF的情形下，或者网络设备检测到终端在从第二小区切换至第三小区时第二小区发生RLF的情形下，此时发生连接失败的小区为第二小区，网络设备通过第三小区将失败指示消息发送给第二小区，以在第二小区进行切换参数优化。
本实施例中，在DAPS切换中，如果终端设备从源小区(即本实施例中的第二小区)成功切换至目标小区(即本实施例中的第三小区)、但终端与源小区断开连接之前源小区发生RLF，则网络设备在目标小区生成失败指示消息并将失败指示消息发送给源小区，从而在未发生RRC连接重建立或建立时，触发网络设备生成失败指示消息，即触发MRO，实现对失败指示消息的增强，更全面地对DAPS中的连接失败进行MRO 过程。
结合网络设备可以根据在RRC连接重建立、RRC建立、CHO中终端连接至候选小区、DAPS切换失败(包括源小区发生RLF)时都会生成失败指示消息，作为示例的，失败指示消息如下表所示：
Figure PCTCN2022071025-appb-000007
在一些实施例中，网络设备在通过第三小区生成失败指示消息后，还可以根据失败指示消息，生成切换报告消息，其中，切换报告消息包括DAPS切换中的目标小区的标识信息，从而在切换报告消息中增加DAPS切换中的目标小区的标识信息，提高切换报告消息的完备性。例如，终端在通过DAPS切换从第二小区切换至第三小区之前从第一小区切换至第二小区，在DAPS切换中第二小区发生RLF，可能是从第一小区切换至第二小区时切换至错误小区，在切换报告消息中加入DAPS切换中的目标小区，向第一小区告知该目标小区为适合切换的小区的作用。
结合网络设备可以根据在RRC连接重建立对应的失败指示消息、RRC建立对应的失败指示消息、CHO中终端连接至候选小区时对应的失败指示消息、DAPS切换失败对应的失败指示消息生成切换报告消息，作为示例的，切换报告消息如下表所示：
Figure PCTCN2022071025-appb-000008
在终端侧，本申请实施例提供了一种小区切换装置，如图9所示，本实施例的小区切换装置可以为终端，小区切换装置可以包括收发机901、处理器902和存储器903。
收发机901，用于在处理器902的控制下接收和发送数据。
其中，在图9中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器902代表的一个或多个处理器和存储器903代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机901可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元，这些传输介质包括，这些传输介质包括无线信道、有线信道、光缆等传输介质。可选的，小区切换装置还可以包括用户接口904，针对不同的用户设备，用户接口904还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器902负责管理总线架构和通常的处理，存储器903可以存储处理器902在执行操作时所使用的数据。
可选的，处理器902可以是中央处理器(central processing unit，CPU)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field－Programmable Gate Array，FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device，CPLD)，处理器也可以采用多核架构。
处理器902通过调用存储器903存储的计算机程序，用于按照获得的可执行指令执行本申请实施例提供的有关终端的任一所述方法。处理器与存储器也可以物理上分开布置。
具体的，处理器902在执行存储器903存储的计算机程序时实现如下操作：接收第一小区发送的第一消息，第一消息指示终端进行切换增强特性的小区切换或者非切换增强特性的小区切换，其中，切换增强特性的小区切换包括条件切换CHO或者双激活协议栈DAPS切换；根据第一消息从第一小区切换至第二小区；接收第二小区发送的第二消息，第二消息指示终端进行切换增强特性的小区切换；根据第二消息从第二小区切换至第三小区，如果第二小区发生RLF，则生成RLF报告、并在RLF报告中记录定时时长，定时时长为从终端接收到第一消息到第二小区发生RLF之间的时长。
可选的，处理器902还用于执行以下操作：在终端接收到第一消息时，重启终端的上报定时器；在终端接收到第二消息时，将上报定时器的值存储为第一时长，并再次重启上报定时器；
如果第二小区发生RLF，则生成RLF报告、并在RLF报告中记录定时时长，包括：如果第二小区发生RLF，则生成RLF报告；将上报定时器的值确定为第二时长，并在RLF报告中记录第一时长和第二时长。
可选的，第一消息指示终端进行非切换增强特性的小区切换时，处理器902还用于执行以下操作：在终端接收到第一消息时，重启终端的上报定时器；
如果第二小区发生RLF，则生成RLF报告、并在RLF报告中记录定时时长，包括：如果第二小区发生RLF，则生成RLF报告，并将上报定时器的值记录为RLF报告中的定时时长。
可选的，处理器902还用于执行以下操作：在终端根据第二消息从第二小区切换至第三小区完成后，再次重启上报定时器。
在此需要说明的是，本申请提供的上述装置，能够实现上述方法实施例中终端所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
在网络侧，本申请实施例提供了一种小区切换装置，如图10所示，本实施例的小区切换装置可以为网络设备，小区切换装置包括：收发机1001、处理器1002和存储器1003。
收发机1001，用于在处理器1002的控制下接收和发送数据。
其中，在图10中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器1002代表的一个或多个处理器和存储器1003代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机1001可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元，这些传输介质包括无线信道、有线信道、光缆等传输介质。处理器1002负责管理总线架构和通常的处理，存储器1003可以存储处理器1002在执行操作时所使用的数据。
处理器1002可以是CPU、ASIC、FPGA或CPLD，处理器也可以采用多核架构。
处理器1002通过调用存储器1003存储的计算机程序，用于按照获得的可执行指令执行本申请实施例提供的有关网络设备的任一所述方法。处理器与存储器也可以物理上分开布置。
具体的，处理器1002在执行存储器1003存储的计算机程序时实现如下操作：通过第二小区向终端发送第二消息，第二消息指示终端进行切换增强特性的小区切换，其中，切换增强特性的小区切换包括CHO或者DAPS切换；如果检测到终端在根据第二消息从第二小区切换至第三小区的过程中记录有RLF报告，则生成失败指示消息，失败指示消息用于小区切换的参数优化。
可选的，处理器1002还用于执行以下操作：如果接收到终端发送的RLF报告，则在失败指示消息添加RLF报告。
可选的，第二消息指示终端进行CHO时，第三小区属于CHO中多个候选小区中的一个小区，处理器1002还用于执行以下操作：如果检测到终端根据第二消息从第二小区切换至第三小区的过程中发生连接失败、且在连接失败后终端连接至第四小区，则在第四小区生成失败指示消息，第四小区为多个候选小区中除第三小区之外的另一小区；其中，连接失败包括终端从第二小区切换至第三小区时切换失败、或者终端从第二小区成功切换至第三小区后第三小区发生RLF。
可选的，失败指示消息包括如下一项或多项：终端在CHO中连接的候选小区的标识信息、终端在CHO中与候选小区是否连接成功、终端在CHO中与候选小区连接成功后在候选小区的驻留信息、RLF报告、终端的标识信息；其中，终端的标识信息包括：终端在CHO中连接成功的目标小区内的标识信息，和/或，终端在CHO中的源小区内的标识信息。
可选的，处理器1002还用于执行以下操作：根据失败指示消息，生成切换报告消息；其中，切换报告消息包括失败原因，失败原因包括如下一项或多项：切换过早、切换过晚、切换到错误小区，切换报告消息还包括如下一项或多项：终端在CHO中连接的候选小区的标识信息、终端在CHO中与候选小区是否连接成功、终端在CHO中与候选小区连接成功后在候选小区的驻留信息、RLF报告。
可选的，第二消息指示终端进行DAPS切换时，第三小区为DAPS切换中的目标小区，处理器1002还用于执行以下操作：如果接收到终端发送的RLF报告，则在失败指示消息添加RLF报告；如果RLF报告指示DAPS切换中第二小区发生RLF，则通过第三小区将失败指示消息发送至第二小区。
可选的，处理器1002还用于执行以下操作：根据失败指示消息，生成切换报告消息，切换报告消息包括DAPS切换中的目标小区的标识信息。
在此需要说明的是，本申请提供的上述装置，能够实现上述方法实施例中网络设备所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
在终端侧，本申请实施例还提供了一种小区切换装置，如图11所示，本实施例的小区切换装置可以为终端，小区切换装置包括：第一接收单元1101、第一切换单元1102、第二接收单元1103、第二切换单元1104和RLF报告生成单元1105。
第一接收单元1101，用于接收第一小区发送的第一消息，第一消息指示终端进行切换增强特性的小区切换或者非切换增强特性的小区切换，其中，切换增强特性的小区切换包括条件切换CHO或者双激活协议栈DAPS切换；
第一切换单元1102，用于根据第一消息从第一小区切换至第二小区；
第二接收单元1103，用于接收第二小区发送的第二消息，第二消息指示终端进行切换增强特性的小区切换；
第二切换单元1104，用于根据第二消息从第二小区切换至第三小区；
RLF报告生成单元1105，用于如果第二小区发生RLF，则生成RLF报告、并在RLF报告中记录定时时长，定时时长为从终端接收到第一消息到第二小区发生RLF之间的时长。
可选的，该装置还包括：
第一重启单元，用于在终端接收到第一消息时，重启终端的上报定时器；
第二重启单元，用于在终端接收到第二消息时，将上报定时器的值存储为第一时长，并再次重启上报定时器；
RLF报告生成单元，具体用于：
如果第二小区发生RLF，则生成RLF报告；将上报定时器的值确定为第二时长，并在RLF报告中记录第一时长和第二时长。
可选的，第一消息指示终端进行非切换增强特性的小区切换时，装置还包括：
第三重启单元，用于在终端接收到第一消息时，重启终端的上报定时器；
RLF报告生成单元1105，具体用于：
如果第二小区发生RLF，则生成RLF报告，并将上报定时器的值记录为RLF报告中的定时时长。
可选的，该装置还包括：
第四重启单元，用于在终端根据第二消息从第二小区切换至第三小区完成后，再次重启上报定时器。
在此需要说明的是，本申请提供的上述装置，能够实现上述方法实施例中终端所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
在网络侧，本申请实施例还提供了一种小区切换装置，如图12所示，本实施例的小区切换装置可以为网络设备，小区切换装置包括：第一发送单元1201和第一生成单元1202。
第一发送单元1201，用于通过第二小区向终端发送第二消息，第二消息指示终端进行切换增强特性的小区切换，其中，切换增强特性的小区切换包括CHO或者DAPS切换；
第一生成单元1202，用于如果检测到终端在根据第二消息从第二小区切换至第三小区的过程中记录有RLF报告，则生成失败指示消息，失败指示消息用于小区切换的参数优化。
可选的，该装置还包括：
第二添加单元，用于如果接收到终端发送的RLF报告，则在失败指示消息添加RLF报告。
可选的，第二消息指示终端进行CHO时，第三小区属于CHO中多个候选小区中的一个小区，该装置还包括：
第二生成单元，用于如果检测到终端根据第二消息从第二小区切换至第三小区的 过程中发生连接失败、且在连接失败后终端连接至第四小区，则在第四小区生成失败指示消息，第四小区为多个候选小区中除第三小区之外的另一小区；
其中，连接失败包括终端从第二小区切换至第三小区时切换失败、或者终端从第二小区成功切换至第三小区后第三小区发生RLF。
可选的，失败指示消息包括如下一项或多项：终端在CHO中连接的候选小区的标识信息、终端在CHO中与候选小区是否连接成功、终端在CHO中与候选小区连接成功后在候选小区的驻留信息、RLF报告、终端的标识信息；其中，终端的标识信息包括：终端在CHO中连接成功的目标小区内的标识信息，和/或，终端在CHO中的源小区内的标识信息。
可选的，该装置还包括：
第三生成单元，用于根据失败指示消息，生成切换报告消息；
其中，失败报告消息包括失败原因，失败原因包括如下一项或多项：切换过早、切换过晚、切换到错误小区，切换报告消息还包括如下一项或多项：终端在CHO中连接的候选小区的标识信息、终端在CHO中与候选小区是否连接成功、终端在CHO中与候选小区连接成功后在候选小区的驻留信息、RLF报告。
可选的，第二消息指示终端进行DAPS切换时，第三小区为DAPS切换中的目标小区，该装置还包括：
第一添加单元，用于如果接收到终端发送的RLF报告，则在失败指示消息添加RLF报告；
第二发送单元，用于如果RLF报告指示DAPS切换中第二小区发生RLF，则通过第三小区将失败指示消息发送至第二小区。
可选的，该装置还包括：
第四生成单元，用于根据失败指示消息，生成切换报告消息，切换报告消息包括DAPS切换中的目标小区的标识信息。
在此需要说明的是，本申请提供的上述装置，能够实现上述方法实施例中网络设备所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
需要说明的是，本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个处理器可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access  Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
终端侧，本申请实施例提供了一种处理器可读存储介质，处理器可读存储介质存储有计算机程序，计算机程序用于使处理器执行本申请实施例提供的有关终端的任一所述方法。使处理器能够实现上述方法实施例中终端所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
网络侧，本申请实施例提供了一种处理器可读存储介质，处理器可读存储介质存储有计算机程序，计算机程序用于使处理器执行本申请实施例提供的有关网络设备的任一所述方法。使处理器能够实现上述方法实施例中网络设备所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
所述处理器可读存储介质可以是处理器能够存取的任何可用介质或数据存储设备，包括但不限于磁性存储器(例如软盘、硬盘、磁带、磁光盘(MO)等)、光学存储器(例如CD、DVD、BD、HVD等)、以及半导体存储器(例如ROM、EPROM、EEPROM、非易失性存储器(NAND FLASH)、固态硬盘(SSD))等。
终端侧，本申请实施例提供了一种包含指令的计算机程序产品，当指令在计算机上运行时，使得计算机执行如上述方法实施例中终端所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
网络侧，本申请实施例提供了一种包含指令的计算机程序产品，当指令在计算机上运行时，使得计算机执行如上述方法实施例中网络设备所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、装置、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机可执行指令实现流程图和/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。可提供这些计算机可执行指令到通用计算机、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。
这些处理器可执行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处理器可读存储器中，使得存储在该处理器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。
这些处理器可执行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。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (25)

  1. 一种小区切换方法，应用于终端，其特征在于，该方法包括：
    接收第一小区发送的第一消息，所述第一消息指示所述终端进行切换增强特性的小区切换或者非切换增强特性的小区切换，其中，切换增强特性的小区切换包括条件切换CHO或者双激活协议栈DAPS切换；
    根据所述第一消息从第一小区切换至第二小区；
    接收第二小区发送的第二消息，所述第二消息指示终端进行切换增强特性的小区切换；
    根据所述第二消息从所述第二小区切换至第三小区，如果所述第二小区发生RLF，则生成RLF报告、并在所述RLF报告中记录定时时长，所述定时时长为从所述终端接收到所述第一消息到所述第二小区发生RLF之间的时长。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    在所述终端接收到所述第一消息时，重启所述终端的上报定时器；
    在所述终端接收到所述第二消息时，将所述上报定时器的值存储为第一时长，并再次重启所述上报定时器；
    所述如果所述第二小区发生RLF，则生成RLF报告、并在所述RLF报告中记录定时时长，包括：
    如果所述第二小区发生RLF，则生成所述RLF报告；
    将所述上报定时器的值确定为第二时长，并在所述RLF报告中记录所述第一时长和所述第二时长。
  3. 根据权利要求1所述的方法，其特征在于，所述第一消息指示所述终端进行非切换增强特性的小区切换时，所述方法还包括：
    在所述终端接收到所述第一消息时，重启所述终端的上报定时器；
    所述如果所述第二小区发生RLF，则生成RLF报告、并在所述RLF报告中记录定时时长，包括：
    如果所述第二小区发生RLF，则生成所述RLF报告，并将所述上报定时器的值记录为所述RLF报告中的定时时长。
  4. 根据权利要求3所述的方法，其特征在于，所述方法还包括：
    在所述终端根据所述第二消息从所述第二小区切换至所述第三小区完成后，再次重启所述上报定时器。
  5. 一种小区切换方法，应用于网络设备，其特征在于，所述方法包括：
    通过第二小区向终端发送第二消息，所述第二消息指示所述终端进行切换增强特性的小区切换，其中，切换增强特性的小区切换包括CHO或者DAPS切换；
    如果检测到所述终端在根据所述第二消息从所述第二小区切换至第三小区的过程中记录有RLF报告，则生成失败指示消息，所述失败指示消息用于小区切换的参数优化。
  6. 根据权利要求5所述的方法，其特征在于，所述方法还包括：
    如果接收到所述终端发送的所述RLF报告，则在所述失败指示消息添加所述RLF 报告。
  7. 根据权利要求5所述的方法，其特征在于，所述第二消息指示所述终端进行CHO时，所述第三小区属于所述CHO中多个候选小区中的一个小区，所述方法还包括：
    如果检测到所述终端根据所述第二消息从所述第二小区切换至第三小区的过程中发生连接失败、且在所述连接失败后所述终端连接至第四小区，则在所述第四小区生成所述失败指示消息，所述第四小区为所述多个候选小区中除所述第三小区之外的另一小区；
    其中，所述连接失败包括所述终端从所述第二小区切换至所述第三小区时切换失败、或者所述终端从所述第二小区成功切换至所述第三小区后所述第三小区发生RLF。
  8. 根据权利要求5-7任一项所述的方法，其特征在于，所述失败指示消息包括如下一项或多项：所述终端在所述CHO中连接的候选小区的标识信息、所述终端在所述CHO中与候选小区是否连接成功、所述终端在所述CHO中与候选小区连接成功后在所述候选小区的驻留信息、所述RLF报告、所述终端的标识信息；
    其中，所述终端的标识信息包括：所述终端在所述CHO中连接成功的目标小区内的标识信息，和/或，所述终端在所述CHO中的源小区内的标识信息。
  9. 根据权利要求8所述的方法，其特征在于，所述方法还包括：
    根据所述失败指示消息，生成切换报告消息；
    其中，所述切换报告消息包括失败原因，所述失败原因包括如下一项或多项：切换过早、切换过晚、切换到错误小区，所述切换报告消息还包括如下一项或多项：所述终端在CHO中连接的候选小区的标识信息、所述终端在所述CHO中与候选小区是否连接成功、所述终端在所述CHO中与候选小区连接成功后在所述候选小区的驻留信息、所述RLF报告。
  10. 根据权利要求5所述的方法，其特征在于，所述第二消息指示所述终端进行DAPS切换时，所述第三小区为所述DAPS切换中的目标小区，所述方法还包括：
    如果接收到所述终端发送的所述RLF报告，则在所述失败指示消息添加所述RLF报告；
    如果所述RLF报告指示所述DAPS切换中所述第二小区发生RLF，则通过所述第三小区将所述失败指示消息发送至所述第二小区。
  11. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    根据所述失败指示消息，生成切换报告消息，所述切换报告消息包括所述DAPS切换中的目标小区的标识信息。
  12. 一种小区切换装置，应用于终端，其特征在于，所述装置包括存储器、收发机和处理器：
    所述存储器，用于存储计算机程序；
    所述收发机，用于在所述处理器的控制下收发数据；
    所述处理器，用于读取所述存储器中的计算机程序并执行以下操作：
    接收第一小区发送的第一消息，所述第一消息指示所述终端进行切换增强特性的小区切换或者非切换增强特性的小区切换，其中，切换增强特性的小区切换包括条件 切换CHO或者双激活协议栈DAPS切换；
    根据所述第一消息从第一小区切换至第二小区；
    接收第二小区发送的第二消息，所述第二消息指示终端进行切换增强特性的小区切换；
    根据所述第二消息从所述第二小区切换至第三小区，如果所述第二小区发生RLF，则生成RLF报告、并在所述RLF报告中记录定时时长，所述定时时长为从所述终端接收到所述第一消息到所述第二小区发生RLF之间的时长。
  13. 根据权利要求12所述的装置，其特征在于，所述处理器还用于执行以下操作：
    在所述终端接收到所述第一消息时，重启所述终端的上报定时器；
    在所述终端接收到所述第二消息时，将所述上报定时器的值存储为第一时长，并再次重启所述上报定时器；
    所述如果所述第二小区发生RLF，则生成RLF报告、并在所述RLF报告中记录定时时长，包括：
    如果所述第二小区发生RLF，则生成所述RLF报告；
    将所述上报定时器的值确定为第二时长，并在所述RLF报告中记录所述第一时长和所述第二时长。
  14. 根据权利要求12所述的装置，其特征在于，所述第一消息指示所述终端进行非切换增强特性的小区切换时，所述处理器还用于执行以下操作：
    在所述终端接收到所述第一消息时，重启所述终端的上报定时器；
    所述如果所述第二小区发生RLF，则生成RLF报告、并在所述RLF报告中记录定时时长，包括：
    如果所述第二小区发生RLF，则生成所述RLF报告，并将所述上报定时器的值记录为所述RLF报告中的定时时长。
  15. 根据权利要求14所述的装置，其特征在于，所述处理器还用于执行以下操作：
    在所述终端根据所述第二消息从所述第二小区切换至所述第三小区完成后，再次重启所述上报定时器。
  16. 一种小区切换装置，应用于网络设备，其特征在于，所述装置包括存储器、收发机和处理器：
    所述存储器，用于存储计算机程序；
    所述收发机，用于在所述处理器的控制下收发数据；
    所述处理器，用于读取所述存储器中的计算机程序并执行以下操作：
    通过第二小区向终端发送第二消息，所述第二消息指示所述终端进行切换增强特性的小区切换，其中，切换增强特性的小区切换包括CHO或者DAPS切换；
    如果检测到所述终端在根据所述第二消息从所述第二小区切换至第三小区的过程中记录有RLF报告，则生成失败指示消息，所述失败指示消息用于小区切换的参数优化。
  17. 根据权利要求16所述的装置，其特征在于，所述处理器还用于执行以下操作：
    如果接收到所述终端发送的所述RLF报告，则在所述失败指示消息添加所述RLF报告。
  18. 根据权利要求16所述的装置，其特征在于，所述第二消息指示所述终端进行CHO时，所述第三小区属于所述CHO中多个候选小区中的一个小区，所述处理器还用于执行以下操作：
    如果检测到所述终端根据所述第二消息从所述第二小区切换至第三小区的过程中发生连接失败、且在所述连接失败后所述终端连接至第四小区，则在所述第四小区生成所述失败指示消息，所述第四小区为所述多个候选小区中除所述第三小区之外的另一小区；
    其中，所述连接失败包括所述终端从所述第二小区切换至所述第三小区时切换失败、或者所述终端从所述第二小区成功切换至所述第三小区后所述第三小区发生RLF。
  19. 根据权利要求16-18任一项所述的装置，其特征在于，所述失败指示消息包括如下一项或多项：所述终端在所述CHO中连接的候选小区的标识信息、所述终端在所述CHO中与候选小区是否连接成功、所述终端在所述CHO中与候选小区连接成功后在所述候选小区的驻留信息、所述RLF报告、所述终端的标识信息；
    其中，所述终端的标识信息包括：所述终端在所述CHO中连接成功的目标小区内的标识信息，和/或，所述终端在所述CHO中的源小区内的标识信息。
  20. 根据权利要求19所述的装置，其特征在于，所述处理器还用于执行以下操作：
    根据所述失败指示消息，生成切换报告消息；
    其中，所述失败报告消息包括失败原因，所述失败原因包括如下一项或多项：切换过早、切换过晚、切换到错误小区，所述切换报告消息还包括如下一项或多项：所述终端在CHO中连接的候选小区的标识信息、所述终端在所述CHO中与候选小区是否连接成功、所述终端在所述CHO中与候选小区连接成功后在所述候选小区的驻留信息、所述RLF报告。
  21. 根据权利要求16所述的装置，其特征在于，所述第二消息指示所述终端进行DAPS切换时，所述第三小区为所述DAPS切换中的目标小区，所述处理器还用于执行以下操作：
    如果接收到所述终端发送的所述RLF报告，则在所述失败指示消息添加所述RLF报告；
    如果所述RLF报告指示所述DAPS切换中所述第二小区发生RLF，则通过所述第三小区将所述失败指示消息发送至所述第二小区。
  22. 根据权利要求21所述的装置，其特征在于，所述处理器还用于执行以下操作：
    根据所述失败指示消息，生成切换报告消息，所述切换报告消息包括所述DAPS切换中的目标小区的标识信息。
  23. 一种小区切换装置，应用于终端，其特征在于，所述装置包括：
    第一接收单元，用于接收第一小区发送的第一消息，所述第一消息指示所述终端进行切换增强特性的小区切换或者非切换增强特性的小区切换，其中，切换增强特性的小区切换包括条件切换CHO或者双激活协议栈DAPS切换；
    第一切换单元，用于根据所述第一消息从第一小区切换至第二小区；
    第二接收单元，用于接收第二小区发送的第二消息，所述第二消息指示终端进行切换增强特性的小区切换；
    第二切换单元，用于根据所述第二消息从所述第二小区切换至第三小区；
    RLF报告生成单元，用于如果所述第二小区发生RLF，则生成RLF报告、并在所述RLF报告中记录定时时长，所述定时时长为从所述终端接收到所述第一消息到所述第二小区发生RLF之间的时长。
  24. 一种小区切换装置，应用于网络设备，其特征在于，所述装置包括：
    第一发送单元，用于通过第二小区向终端发送第二消息，所述第二消息指示所述终端进行切换增强特性的小区切换，其中，切换增强特性的小区切换包括CHO或者DAPS切换；
    第一生成单元，用于如果检测到所述终端在根据所述第二消息从所述第二小区切换至第三小区的过程中记录有RLF报告，则生成失败指示消息，所述失败指示消息用于小区切换的参数优化。
  25. 一种处理器可读存储介质，其特征在于，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行权利要求1至4任一项所述的方法或者5至11任一项所述的方法。
PCT/CN2022/071025 2021-01-14 2022-01-10 小区切换方法、装置及存储介质 WO2022152084A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024020887A1 (zh) * 2022-07-27 2024-02-01 北京小米移动软件有限公司 检测处理、终端行为确定方法及装置、存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107666672A (zh) * 2016-07-26 2018-02-06 中兴通讯股份有限公司 鲁棒性的优化方法、装置及系统
CN110915259A (zh) * 2019-09-27 2020-03-24 北京小米移动软件有限公司 链路失败的信息处理方法和电子设备
CN113411847A (zh) * 2020-03-16 2021-09-17 华为技术有限公司 通信方法及装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011134108A1 (en) * 2010-04-27 2011-11-03 Nokia Siemens Networks Oy Method of determining a radio link failure associated with a handover of a user equipment from a source access node to a target access node, access node for determining a radio link failure associated with a handover of a user equipment from a source access node to a target access node, and user equipment
WO2022016431A1 (zh) * 2020-07-22 2022-01-27 北京小米移动软件有限公司 切换小区的方法、装置、通信设备及存储介质

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107666672A (zh) * 2016-07-26 2018-02-06 中兴通讯股份有限公司 鲁棒性的优化方法、装置及系统
CN110915259A (zh) * 2019-09-27 2020-03-24 北京小米移动软件有限公司 链路失败的信息处理方法和电子设备
CN113411847A (zh) * 2020-03-16 2021-09-17 华为技术有限公司 通信方法及装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NOKIA, NOKIA SHANGHAI BELL: "On RLF reporting for CHO and DAPS", 3GPP DRAFT; R2-1915497, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Reno, USA; 20191118 - 20191122, 7 November 2019 (2019-11-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051815938 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024020887A1 (zh) * 2022-07-27 2024-02-01 北京小米移动软件有限公司 检测处理、终端行为确定方法及装置、存储介质

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