WO2020164555A1 - 双连接系统中处理连接失败的方法、装置及存储介质 - Google Patents

双连接系统中处理连接失败的方法、装置及存储介质 Download PDF

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WO2020164555A1
WO2020164555A1 PCT/CN2020/075143 CN2020075143W WO2020164555A1 WO 2020164555 A1 WO2020164555 A1 WO 2020164555A1 CN 2020075143 W CN2020075143 W CN 2020075143W WO 2020164555 A1 WO2020164555 A1 WO 2020164555A1
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Prior art keywords
base station
primary base
user terminal
source
target
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English (en)
French (fr)
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刘爱娟
梁靖
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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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
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0027—Control or signalling for completing the hand-off for data sessions of end-to-end connection for a plurality of data sessions of end-to-end connections, e.g. multi-call or multi-bearer end-to-end data connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • 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
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • 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
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure

Definitions

  • This application relates to the field of communications, and in particular to a method, device and storage medium for handling connection failures in a dual connection system.
  • the evolved Universal Terrestrial Radio Access Network In the Long Term Evolution (LTE) system, the evolved Universal Terrestrial Radio Access Network (E-UTRAN) is composed of multiple base stations (eNodeBs), eNodeB and core network (Evolved Packet). Core, EPC) are connected through an S1 interface, and eNodeBs are connected through an X2 interface.
  • a user terminal User Equipment, UE
  • UE User Equipment
  • One of the eNodeBs serves as a master base station (Master Node, MN) and has a control plane connection with the core network; the other eNB serves as a secondary base station (Secondary Node, SN) and has no control plane connection with the core network.
  • 5G 5th Generation mobile communication technology
  • 5g base station 5g base station
  • gNB 5g base station
  • gNB 5g base station
  • Double connection if the UE fails to connect to the primary base station, the data transfer between the network side (including the primary base station and the secondary base station) and the UE will stop.
  • the UE can transparently transmit the connection information to the primary base station through the secondary base station, and the primary base station can maintain the current state (that is, the MN fails but the SN is always transmitting data) Or determine the target base station, and initiate a subsequent handover process to the target base station; at the same time, the data transfer between the SN node and the UE continues.
  • Figure 1 is a schematic diagram of a dual-connection system architecture in which a 5G base station is connected to a core network through an LTE base station
  • Figure 2 is a schematic diagram of a dual-connection system architecture in which both a 5G base station and an LTE base station are connected to the 5G core network.
  • the LTE base station is connected to the core network through the S1 interface as the primary base station, and the 5G base station is connected to the primary base station through the X2 interface as the secondary base station; in Figure 2, both 5G base stations and LTE base stations can be connected to the 5G core through the NG interface
  • the network serves as the main base station, and the LTE base station/5G base station is connected to the main base station through the Xn interface.
  • the UE has a master cell group failure (MCG failure)
  • MCG failure master cell group failure
  • the master base station decides to send an appropriate target base station Initiating the handover process, for the target base station, because it does not know the status of the UE on the source side, reasonable admission control and selection of the target secondary base station cannot be performed.
  • the primary base station decides not to initiate a handover, since the currently serving secondary base station does not know the current connection status between the primary base station and the core network, it may request to release the secondary base station (releases SN), causing the UE to interrupt data transmission with the network side.
  • This application provides a method, device, and storage medium for handling connection failures in a dual-connectivity system to solve the problem in the prior art that in a dual-connectivity system, when MCG failure occurs at the main base station, the user terminal cannot maintain the user terminal and the network Technical problem of side connection.
  • a method for handling connection failure in a dual connectivity system provided by an embodiment of the present application is applied to a source primary base station.
  • the source primary base station and the source secondary base station are connected to form a dual connectivity system.
  • the technical scheme of the method is as follows:
  • a handover request message is sent to the target primary base station; wherein the handover request message carries indication information for indicating that the user terminal has failed MCG in the source primary base station.
  • the source primary base station in the dual connectivity system After receiving the MCG failure information of the primary serving cell set and the channel measurement report of the user terminal sent by the user terminal; let the source primary base station in the dual connectivity system determine whether to perform primary base station handover for the user terminal based on the channel measurement report; When the user terminal performs the primary base station handover, a handover request message is sent to the target primary base station; wherein, the handover request message carries indication information for indicating that the user terminal has failed MCG at the source primary base station.
  • the user terminal can be switched from the source primary base station to the target primary base station in time, so that the user terminal can maintain the connection with the network side.
  • the method further includes:
  • the indication information of the MCG failure is the cause information element in the handover request information.
  • the indication information of the MCG failure is a newly added information element in the handover request information.
  • the embodiment of the present application provides a method for handling connection failure in a dual connectivity system, which is applied to a target primary base station, and the target primary base station and the target secondary base station are connected to form a dual connectivity system.
  • the technical solution of the method is as follows:
  • the target primary base station After the target primary base station receives the handover request message sent by the source primary base station, the target primary base station is asked to indicate that the user terminal has failed MCG at the source primary base station based on the handover request message, and it can be known that the handover is caused by the MCG failure. , It is an emergency situation, and the user terminal needs to be switched to the main base station immediately to complete the admission control of the user terminal. Thus, the user terminal can be switched from the source primary base station to the target primary base station in time, so that the user terminal can maintain the connection with the network side.
  • the method further includes:
  • a source secondary base station connected to the source primary base station is selected as the target secondary base station of the target primary base station.
  • the indication information of the MCG failure is the cause information element in the handover request information.
  • the indication information of the MCG failure is a newly added information element in the handover request information.
  • an embodiment of the present application provides a device for handling connection failure in a dual-connection system, which is applied to a source primary base station, and the device includes:
  • the receiving unit is configured to receive the MCG failure information of the primary serving cell set and the channel measurement report of the user terminal sent by the user terminal;
  • a determining unit configured to determine whether to perform primary base station handover for the user terminal based on the channel measurement report
  • the processing unit is configured to send a handover request message to the target primary base station if it is determined to perform the primary base station handover for the user terminal; wherein, the handover request message carries an instruction to indicate that the user terminal has undergone MCG in the source primary base station. Failure instructions.
  • the processing unit is further configured to:
  • the indication information of the MCG failure is the cause information element in the handover request information.
  • the indication information of the MCG failure is a newly added information element in the handover request information.
  • an embodiment of the present application provides a device for handling connection failures in a dual connectivity system, which is applied to a target primary base station.
  • the target primary base station and the target secondary base station are connected to form a dual connectivity system, and the device includes:
  • a receiving unit configured to receive a handover request message sent by a source primary base station; wherein the handover request message carries information indicating that an MCG failure of the user terminal has occurred in the source primary base station;
  • the switching unit is configured to switch the primary base station of the user terminal from the source primary base station to the target primary base station based on the handover request message.
  • the handover unit is further configured to:
  • a source secondary base station connected to the source primary base station is selected as the target secondary base station of the target primary base station.
  • the indication information of the MCG failure is the cause information element in the handover request information.
  • the indication information of the MCG failure is a newly added information element in the handover request information.
  • an embodiment of the present application also provides a device for handling connection failures in a dual connection system, which is applied to a source primary base station.
  • the source primary base station and the source secondary base station are connected to form a dual connectivity system, and the device includes: a processor, Memory and transceiver;
  • the processor is used to read the program in the memory and execute the following process:
  • a handover request message is sent to the target primary base station; wherein the handover request message carries indication information for indicating that the user terminal has failed MCG in the source primary base station.
  • the processor is further configured to:
  • the indication information of the MCG failure is the cause information element in the handover request information.
  • the indication information of the MCG failure is a newly added information element in the handover request information.
  • the embodiments of the present application also provide a device for handling connection failures in a dual connectivity system, which is applied to a target primary base station, and the target primary base station and the target secondary base station are connected to form a dual connectivity system, and the device includes: a processor, Memory and transceiver;
  • the processor is used to read the program in the memory and execute the following process:
  • the processor is further configured to:
  • a source secondary base station connected to the source primary base station is selected as the target secondary base station of the target primary base station.
  • the indication information of the MCG failure is the cause information element in the handover request information.
  • the indication information of the MCG failure is a newly added information element in the handover request information.
  • an embodiment of the present application also provides a computer-readable storage medium, including:
  • the computer-readable storage medium stores computer instructions, and when the computer instructions run on a computer, the computer executes the method described in the first or second aspect.
  • the embodiments of the present application have at least the following technical effects:
  • the source primary base station in the dual connectivity system determines whether it is correct or not based on the channel measurement report.
  • the user terminal performs the primary base station handover; if it is determined to perform the primary base station handover for the user terminal, it sends a handover request message to the target primary base station; wherein the handover request message carries indication information indicating that the user terminal has failed MCG at the source primary base station .
  • the user terminal can be switched from the source primary base station to the target primary base station in time, so that the user terminal can maintain the connection with the network side.
  • Figure 1 is a schematic diagram of a dual connectivity system architecture in which a 5G base station is connected to a core network through an LTE base station;
  • Figure 2 is a schematic diagram of a dual-connection system architecture in which both 5G base stations and LTE base stations are connected to the 5G core network;
  • Figure 3 is a flow chart of base station handover when MCG fails in the prior art
  • FIG. 4 is a flowchart of a method for handling connection failure in a dual connection system on the source master base station side provided by an embodiment of the application;
  • FIG. 5 is a flowchart of a method for handling connection failure in a dual connection system on the target primary base station side provided by an embodiment of the application;
  • FIG. 6 is a flowchart of handover between a source primary base station and a target primary base station when MCG transmission fails according to an embodiment of the application;
  • FIG. 7 is a flowchart provided by an embodiment of the application when the source primary base station maintains the current state when the MCG transmission fails;
  • FIG. 8 is a schematic structural diagram of an apparatus for processing connection failure in a dual connection system on the source master base station side according to an embodiment of the application;
  • FIG. 9 is a schematic structural diagram of an apparatus for processing connection failure in a dual connection system on the side of a target primary base station provided by an embodiment of the application;
  • FIG. 10 is a schematic structural diagram of an apparatus for processing connection failure in another dual connection system on the source master base station side according to an embodiment of the application;
  • FIG. 11 is a schematic structural diagram of an apparatus for processing connection failure in another dual-connection system on the target primary base station side provided by an embodiment of the application.
  • the implementation column of this application provides a method, device and storage medium for handling connection failures in a dual-connectivity system, so as to solve the problem in the prior art that in a dual-connectivity system, when MCG failure occurs in the main base station, the user terminal cannot maintain the Technical problem of network connection.
  • a method for handling connection failures in a dual connection system is provided, which is applied to a source primary base station.
  • the source primary base station and the source secondary base station are connected to form a dual connection system.
  • the method includes: receiving the MCG failure information of the primary serving cell set sent by a user terminal, and The channel measurement report of the user terminal; based on the channel measurement report, determine whether to perform primary base station handover for the user terminal; if it is determined to perform primary base station handover for the user terminal, send a handover request message to the target primary base station; where the handover request message carries To indicate that the user terminal has failed MCG at the source primary base station.
  • the source primary base station in the dual connectivity system determines whether to perform the measurement on the user terminal based on the channel measurement report.
  • Primary base station handover if it is determined to perform primary base station handover for the user terminal, a handover request message is sent to the target primary base station; where the handover request message carries indication information for indicating that the user terminal has failed MCG at the source primary base station.
  • the user terminal can be switched from the source primary base station to the target primary base station in time, so that the user terminal can maintain the connection with the network side.
  • Step 301 The user terminal sends an MCG failure report (MCG failure) to the source secondary base station.
  • MCG failure MCG failure report
  • the user terminal reports the occurrence of MCG failure to the network side through a separate wireless signal bearer (SPLIT Signal Radio Bearer, SPLIT SRB).
  • SPLIT SRB wireless signal bearer
  • Step 302 The source secondary base station sends a radio resource control (Radio Resource Control, RRC) message to the source primary base station.
  • RRC Radio Resource Control
  • the source secondary base station After receiving the MCG failure report sent by the user terminal, the source secondary base station does not parse the MCG failure report, but transparently transmits the MCG failure report to the source primary base station through an RRC message.
  • Step 303 The source primary base station sends a handover request to the target primary base station.
  • the source primary base station decides to switch the target base station of the user terminal according to the measurement information regularly reported by the user terminal and the MCG failure report, and initiates a handover process to the target primary base station.
  • Step 304 The target primary base station sends a request for adding the target secondary base station to the target secondary base station.
  • the target primary base station After the target primary base station receives the handover request, it finds that its task is too heavy, and there are base stations in the surrounding base stations that can carry the tasks of the source primary base station, so the target primary base station decides to establish a dual connection to carry the tasks of the source primary base station, and then the target primary base station The base station regards the base station capable of carrying the tasks of the source primary base station as the target secondary base station, and sends a request for adding the target secondary base station to it.
  • Step 305 The target secondary base station returns a response message for adding the target secondary base station to the target primary base station.
  • the target primary base station decides to add the target secondary base station according to the existing information, and the establishment of the dual connection is completed.
  • Step 306 The target primary base station feeds back handover completion information to the source primary base station.
  • the target primary base station After the target primary base station completes the establishment of the dual connection, it needs to feed back handover completion information to the source primary base station.
  • Step 307a The source primary base station sends a request to release the source secondary base station to the source secondary base station.
  • Step 307b The source secondary base station returns to the source primary base station a response message for releasing the source secondary base station.
  • the source primary base station is allowed to initiate the release process of the source secondary base station to the source secondary base station through steps 307a and 307b.
  • Step 308a The source primary base station sends an RRC reconfiguration message to the source secondary base station.
  • Step 308b The source secondary base station forwards the RRC reconfiguration message to the user terminal.
  • the source primary base station sends an RRC reconfiguration message to the user terminal through the source secondary base station, where the RRC reconfiguration message carries a handover command for the user terminal to switch from the source primary base station to the target primary base station (handover command)
  • the target primary base station uses dual connectivity and the relevant information about the target secondary base station that establishes dual connectivity with the target primary base station.
  • Step 309 The user terminal completes random access with the target primary base station.
  • the user terminal switches from the source primary base station to the target primary base station according to the handover command carried in the received RRC reconfiguration message to complete random access with the target primary base station.
  • Step 310 The user terminal sends the RRC reconnection completed information to the target primary base station.
  • the user terminal After the user terminal completes the random access with the target primary base station, it also needs to send a complete RRC reconnection message to the target primary base station, so that the target primary base station knows that the user terminal has completed the connection established therewith.
  • Step 311 The user terminal completes random access with the target secondary base station.
  • the user terminal knows that the target primary base station uses dual connectivity, so the user terminal also needs to complete random access with the target secondary base station according to the relevant information of the target secondary base station in the handover command.
  • Step 312 The target primary base station sends to the target secondary base station the completion of the reconfiguration of the target secondary base station.
  • the user terminal initiates random access, and after success, sends a reconfiguration complete message to the target primary base station.
  • Step 313a The source secondary base station sends a data volume report of the secondary base station to the source primary base station.
  • Step 313b The source primary base station forwards the data volume report of the secondary base station to the core network.
  • the network side can initiate the reporting of the data volume report of the secondary base station, so that the core network knows the status of the primary base station corresponding to the user terminal and the secondary base station carrying the data volume of the user terminal.
  • Step 314 The source primary base station sends the secondary base station status forward to the target primary base station.
  • Step 315 The serving gateway completes the data forwarding with the target primary base station through the source primary base station.
  • the source primary base station side initiates the data forwarding process, and transfers the relevant data of the user terminal to the target primary base station.
  • Step 316 The target primary base station sends a path switching request to the core network.
  • Step 317 The core network modifies the bearer of the serving gateway.
  • Step 318a The serving gateway establishes a new path with the target primary base station.
  • Step 318b The serving gateway establishes a new path with the target secondary base station.
  • Step 319 The core network sends a path switch request confirmation to the target primary base station.
  • Step 320 The target primary base station sends the user terminal context release to the source secondary base station.
  • Step 321 The source primary base station sends the user terminal context release to the source secondary base station;
  • the source side deletes the user terminal context.
  • an embodiment of the present application provides a method for handling connection failure in a dual connection system, which is applied to a source primary base station.
  • the source primary base station and the source secondary base station are connected to form a dual connectivity system.
  • the processing process of the method is as follows:
  • Step 401 Receive the MCG failure information of the primary serving cell set and the channel measurement report of the user terminal sent by the user terminal.
  • Step 402 Determine whether to perform primary base station handover for the user terminal based on the channel measurement report.
  • Step 403 If it is determined to perform the primary base station handover for the user terminal, send a handover request message to the target primary base station; wherein, the handover request message carries indication information for indicating that the user terminal has failed MCG in the source primary base station.
  • the user terminal When an MCG failure occurs between the user terminal and the source primary base station, the user terminal sends MCG failure information to the source secondary base station, so that the source secondary base station forwards the MCG failure information to the source primary base station.
  • the source primary base station After the source primary base station receives the MCG failure information sent by the user terminal forwarded by the source secondary base station, it determines whether to perform primary base station handover for the user terminal according to the latest received channel measurement report of the user terminal.
  • the source primary base station determines that the channel quality between the user terminal and base station A is good according to the measurement report of the user terminal, and then determines to let the user terminal perform primary base station handover, and uses base station A as the target primary base station. If the source primary base station determines that no channel quality between the base station and the user terminal reaches the specified threshold according to the measurement report of the user terminal, it decides not to let the user terminal perform primary base station handover temporarily.
  • the source primary base station determines to perform primary base station handover for the user terminal, it sends a handover request message to the target primary base station, where the handover request message carries indication information for indicating that the user terminal has failed MCG at the source primary base station.
  • the target primary base station can perform admission control of the user terminal according to the indication information of MCG failure.
  • the user terminal can be switched from the source primary base station to the target primary base station in time, so that the user terminal can maintain the connection with the network side.
  • the information of the source secondary base station is also carried in the handover request information.
  • the target primary base station can guide the source secondary base station to continue to provide services for the user terminal, so that the source secondary base station is selected as the corresponding target secondary base station when the target secondary base station is selected, and the user terminal is kept in the process of the primary base station handover. Data transfer with the network side is not interrupted.
  • the source primary base station determines whether to perform primary base station handover for the user terminal, if it is determined not to perform primary base station handover for the user terminal, the MCG failure indication information is sent to the source secondary base station.
  • the source secondary base station Since the source secondary base station does not parse the MCG failure information sent by the user terminal when it receives the MCG failure information, the source secondary base station does not know that the user terminal has an MCG failure at the source primary base station.
  • the source primary base station sends the MCG failure indication information to the source secondary base station, so that the source secondary base station can determine a radio resource management (Radio Resource Management, RRM) decision according to the MCG failure indication information.
  • RRM Radio Resource Management
  • the indication information of MCG failure is the cause information element in the handover request information.
  • M stands for maintenance.
  • the user terminal when a user terminal fails an MCG at the source primary base station, the user terminal sends MCG failure information to the source secondary base station connected to the source primary base station, and the source secondary base station forwards the MCG failure information to the source primary base station.
  • the source primary base station When the source primary base station receives the MCG failure information sent by the user terminal, it determines to perform primary base station handover for the user terminal according to the latest channel measurement report of the user terminal, and uses the target primary base station as the handover object.
  • the source primary base station sends a handover request message to the target primary base station.
  • the Cause information element is used to indicate that the user terminal has failed MCG at the source primary base station, so that the target primary base station knows that the handover is caused by the MCG failure , It is an emergency, and the main base station needs to be switched immediately to complete the admission control of the user terminal.
  • the user terminal can be switched from the source primary base station to the target primary base station in time, so that the user terminal can maintain the connection with the network side.
  • the handover request information can also carry the information of the source secondary base station, so that the target primary base station can select the source secondary base station as the target secondary base station when selecting the target secondary base station, thereby maintaining uninterrupted data transmission between the user terminal and the network side .
  • the MCG failure indication information is sent to the source secondary base station, so that the source secondary base station determines the RRM decision based on the MCG failure indication information.
  • the indication information of MCG failure is a newly added information element in the handover request information.
  • MCG Failure indication is the name of the newly added information element, and O represents operation.
  • the user terminal when a user terminal fails an MCG at the source primary base station, the user terminal sends MCG failure information to the source secondary base station connected to the source primary base station, and the source secondary base station forwards the MCG failure information to the source primary base station.
  • the source primary base station When the source primary base station receives the MCG failure information sent by the user terminal, it determines to perform primary base station handover for the user terminal according to the latest channel measurement report of the user terminal, and uses the target primary base station as the handover object.
  • the source primary base station sends a handover request message to the target primary base station, and the newly added information element (MCG Failure indication) is used in the handover request message as the indication information indicating that the user terminal has failed MCG at the source primary base station, so that the target primary base station knows
  • MCG Failure indication the newly added information element
  • the handover is caused by MCG failure, which is an emergency situation, and the main base station needs to be switched immediately to complete the admission control of the user terminal.
  • the user terminal can be switched from the source primary base station to the target primary base station in time, so that the user terminal can maintain the connection with the network side.
  • the handover request information can also carry the information of the source secondary base station, so that the target primary base station can select the source secondary base station as the target secondary base station when selecting the target secondary base station, thereby maintaining uninterrupted data transmission between the user terminal and the network side .
  • the source primary base station After the source primary base station sends the indication information identified by the MCG to the target primary base station, please refer to the following for the processing procedure of the target primary base station.
  • an embodiment of the present application provides a method for handling connection failure in a dual connectivity system, which is applied to a target primary base station, and the target primary base station and the target secondary base station are connected to form a dual connectivity system.
  • the method includes:
  • Step 501 Receive a handover request message sent by the source primary base station; where the handover request message carries information indicating that the user terminal has failed MCG in the source primary base station.
  • Step 502 Based on the handover request message, switch the primary base station of the user terminal from the source primary base station to the target primary base station.
  • the target primary base station After the target primary base station receives the handover request message sent by the source primary base station, the target primary base station indicates that the user terminal has failed MCG at the source primary base station based on the handover request message. It can be seen that the handover is caused by the MCG failure. , It is an emergency situation, and the user terminal needs to be switched to the main base station immediately to complete the admission control of the user terminal. Thus, the user terminal can be switched from the source primary base station to the target primary base station in time, so that the user terminal can maintain the connection with the network side.
  • the source secondary base station connected to the source primary base station can also be selected as the target secondary base station of the target primary base station.
  • the target primary base station can select the source secondary base station as the target secondary base station when selecting the target secondary base station, thereby maintaining uninterrupted data transmission between the user terminal and the network side.
  • the indication information of MCG failure is the cause information element in the handover request information.
  • the indication information of MCG failure is a newly added information element in the handover request information.
  • Step 601 The user terminal sends MCG failure information to the source secondary base station.
  • Step 602 The source secondary base station forwards the MCG failure information to the source primary base station.
  • the source secondary base station After receiving the MCG failure information sent by the user terminal, the source secondary base station does not parse the MCG failure information, but transparently transmits the MCG failure information to the source primary base station through the RRC message.
  • Step 603 The source primary base station sends a handover request message to the target primary base station, which carries the indication information of MCG failure.
  • the handover request message carries indication information for indicating that the user terminal has failed MCG at the source primary base station.
  • the indication information of the MCG failure can be indicated by the cause information element or the newly added information element in the handover request message.
  • the source primary base station decides to switch the primary base station of the user terminal according to the channel measurement information of the user terminal and the indication information of MCG failure, selects the target primary base station as the handover target, and initiates the handover process to the target primary base station.
  • Step 604 The target primary base station sends a request of the source secondary base station to add the target secondary base station to the target secondary base station.
  • Step 605 The source secondary base station returns a response message for adding the target secondary base station to the target primary base station.
  • the target primary base station decides to select the source secondary base station as the newly added target secondary base station according to the information of the source secondary base station carried in the handover request message and the indication information of MCG failure.
  • Step 606 The target primary base station feeds back handover completion information to the source primary base station.
  • Step 607 The source primary base station sends a request to release the source secondary base station to the source secondary base station.
  • Step 608 The source secondary base station returns a response message for releasing the source secondary base station to the source primary base station.
  • step 607 and step 608 the source primary base station is allowed to initiate the release process of the source secondary base station to the source secondary base station.
  • Step 609a The source primary base station sends an RRC reconfiguration message to the source secondary base station.
  • Step 609b The source secondary base station forwards the RRC reconfiguration message to the user terminal.
  • the source primary base station sends an RRC reconfiguration message to the user terminal through the source secondary base station, so that the user terminal is handed over from the source primary base station to the target primary base station.
  • Step 610 The user terminal completes random access with the target primary base station.
  • Step 611 The user terminal sends the RRC reconnection completed information to the target primary base station.
  • Step 612 the target primary base station sends to the target secondary base station (that is, the source secondary base station) to complete the reconfiguration of the target secondary base station.
  • step 610 to step 612 the user terminal initiates random access, and after success, sends a reconfiguration complete message to the target primary base station.
  • Step 613 The source primary base station sends the secondary base station status forward to the target primary base station.
  • Step 614 The serving gateway completes the data forwarding with the target primary base station through the source primary base station.
  • the source primary base station side initiates a data forwarding process to transfer relevant data of the user terminal to the target primary base station.
  • Step 615 The target primary base station sends a path switching request to the core network.
  • Step 616 The core network modifies the bearer of the serving gateway.
  • Step 617a The serving gateway establishes a new path with the target primary base station.
  • Step 617b The serving gateway establishes a new path with the target secondary base station (that is, the source secondary base station).
  • Step 618 The core network sends a path switching request confirmation to the target primary base station.
  • Step 619 The target primary base station sends the user terminal context release to the source base station.
  • Step 620 The source primary base station sends the user terminal context release to the source secondary base station.
  • step 615 and step 620 the source side deletes the user terminal context. Finally, the primary base station of the user terminal is switched from the source primary base station to the target primary base station.
  • the user terminal is in a dual connection state
  • the primary base station is eNB1 (ie, the source primary base station)
  • the secondary base station is gNB2 (ie, the source secondary base station).
  • the user terminal has an MCG failure at the source primary base station, and the user terminal informs the source primary base station of the MCG FAILURE (ie, MCG failure) through the SPLIT SRB.
  • the source master base station decides to keep the current state.
  • the processing flow at this time is as follows:
  • Step 701 The user terminal sends MCG failure information to the source secondary base station.
  • Step 702 The source secondary base station forwards the MCG failure information to the source primary base station.
  • the source secondary base station transparently transmits the MCG failure information to the source primary base station through RRC information transmission.
  • Step 703 The source primary base station sends the MCG failure indication information to the source secondary base station.
  • the source primary base station After the source primary base station receives the MCG failure information sent by the user terminal, according to the channel measurement report of the user terminal, it decides not to switch the primary base station of the user terminal and keeps the current state, so it sends the MCG failure indication information to the source secondary base station.
  • the user terminal is allowed to continue data transmission with the source secondary base station, thereby avoiding the source secondary base station from initiating a bearer change or source secondary base station release process.
  • an embodiment of the present application provides a device for handling connection failure in a dual-connection system.
  • the method for handling connection failure in the dual-connection system of the device please refer to the method embodiment on the source master base station side. Part of the description, the repetitive parts will not be repeated, please refer to Figure 8.
  • the device includes:
  • the receiving unit 801 is configured to receive the MCG failure information of the primary serving cell set and the channel measurement report of the user terminal sent by the user terminal;
  • the determining unit 802 is configured to determine whether to perform primary base station handover for the user terminal based on the channel measurement report;
  • the processing unit 803 is configured to send a handover request message to the target primary base station if it is determined to perform the primary base station handover for the user terminal; wherein, the handover request message carries a message used to indicate that the user terminal has been in the source primary base station. Indication of MCG failure.
  • the processing unit 803 is further configured to:
  • the indication information of the MCG failure is the cause information element in the handover request information.
  • the indication information of the MCG failure is a newly added information element in the handover request information.
  • an embodiment of the present application provides a device for handling connection failure in a dual connection system.
  • the method for handling connection failure in the dual connection system of the device please refer to the method embodiment on the target primary base station side Part of the description, the repetitive parts will not be repeated, please refer to Figure 9.
  • the device includes:
  • the receiving unit 901 is configured to receive a handover request message sent by a source primary base station; wherein the handover request message carries information indicating that an MCG failure of the user terminal has occurred in the source primary base station;
  • the switching unit 902 is configured to switch the primary base station of the user terminal from the source primary base station to the target primary base station based on the handover request message.
  • the handover unit 902 is further configured to:
  • a source secondary base station connected to the source primary base station is selected as the target secondary base station of the target primary base station.
  • the indication information of the MCG failure is the cause information element in the handover request information.
  • the indication information of the MCG failure is a newly added information element in the handover request information.
  • an apparatus for handling connection failures in a dual connectivity system is applied to a source primary base station.
  • the source primary base station and the source secondary base station are connected to form a dual connectivity system, and the device includes: The device 1001, the memory 1002 and the transceiver 1003;
  • the processor 1001 is configured to read a program in the memory 1002 and execute the following process:
  • a handover request message is sent to the target primary base station; wherein the handover request message carries indication information for indicating that the user terminal has failed MCG in the source primary base station.
  • the processor 1001 is further configured to:
  • the indication information of the MCG failure is the cause information element in the handover request information.
  • the indication information of the MCG failure is a newly added information element in the handover request information.
  • the processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1002 can store data used by the processor 1001 when performing operations.
  • the transceiver 1003 is used to receive and transmit data under the control of the processor 1001.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors 1001 represented by the processor 1001 and various circuits of the memory 1002 represented by the memory 1002 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1002 can store data used by the processor 1001 when performing operations.
  • the process disclosed in the embodiment of the present application may be applied to the processor 1001 or implemented by the processor 1001.
  • each step of the signal processing flow can be completed by hardware integrated logic circuits in the processor 1001 or instructions in the form of software.
  • the processor 1001 may be a general-purpose processor 1001, a digital signal processor 1001, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, which can implement or execute the implementation of this application
  • the general-purpose processor 1001 may be a microprocessor 1001 or any conventional processor 1001 or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by the hardware processor 1001, or executed and completed by a combination of hardware and software modules in the processor 1001.
  • the software module may be located in the RAM 1002, flash memory, read only memory 1002, programmable read only memory 1002 or electrically erasable programmable memory 1002, registers and other mature storage media in the field.
  • the storage medium is located in the memory 1002, and the processor 1001 reads the information in the memory 1002, and completes the steps of the signal processing flow in combination with its hardware.
  • an apparatus for handling connection failures in a dual connectivity system provided by an embodiment of the present application is applied to a target primary base station.
  • the target primary base station and the target secondary base station are connected to form a dual connectivity system, and the device includes: processing A device 1101, a memory 1102, and a transceiver 1103;
  • the processor 1101 is configured to read a program in the memory 1102 and execute the following process:
  • the processor 1101 is further configured to:
  • a source secondary base station connected to the source primary base station is selected as the target secondary base station of the target primary base station.
  • the indication information of the MCG failure is the cause information element in the handover request information.
  • the indication information of the MCG failure is a newly added information element in the handover request information.
  • the processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1102 can store data used by the processor 1101 when performing operations.
  • the transceiver 1103 is used to receive and send data under the control of the processor 1101.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors 1101 represented by the processor 1101 and various circuits of the memory 1102 represented by the memory 1102 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1102 can store data used by the processor 1101 when performing operations.
  • the process disclosed in the embodiment of the present application may be applied to the processor 1101 or implemented by the processor 1101.
  • each step of the signal processing flow can be completed by hardware integrated logic circuits in the processor 1101 or instructions in the form of software.
  • the processor 1101 may be a general-purpose processor 1101, a digital signal processor 1101, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the implementation of this application The methods, steps and logic block diagrams disclosed in the examples.
  • the general-purpose processor 1101 may be a microprocessor 1101 or any conventional processor 1101 or the like.
  • the steps of the method disclosed in the embodiment of the present application may be directly embodied as being executed and completed by the hardware processor 1101, or executed and completed by a combination of hardware and software modules in the processor 1101.
  • the software module may be located in a storage medium mature in the art such as random access memory 1102, flash memory, read only memory 1102, programmable read only memory 1102 or electrically erasable programmable memory 1102, registers.
  • the storage medium is located in the memory 1102, and the processor 1101 reads the information in the memory 1102, and completes the steps of the signal processing flow in combination with its hardware.
  • an embodiment of this application also provides a computer-readable storage medium, including:
  • the computer-readable storage medium stores computer instructions that, when run on the computer, cause the computer to execute the method for handling connection failures in the dual-connection system on the source primary base station side or the target primary base station side as described above.
  • the source primary base station in the dual connectivity system determines whether it is correct or not based on the channel measurement report.
  • the user terminal performs the primary base station handover; if it is determined to perform the primary base station handover for the user terminal, it sends a handover request message to the target primary base station; wherein the handover request message carries indication information indicating that the user terminal has failed MCG at the source primary base station .
  • the user terminal can be switched from the source primary base station to the target primary base station in time, so that the user terminal can maintain the connection with the network side.
  • the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the embodiments of the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

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Abstract

本申请公开了双连接系统中处理连接失败的方法、装置及存储介质，用以解决现有技术中存在的在双连接系统中，当用户终端在主基站发生MCG failure时，不能维持用户终端与网络侧连接的技术问题。包括：接收用户终端发送的主服务小区集合MCG失败信息，及用户终端的信道测量报告；基于信道测量报告，确定是否对用户终端进行主基站切换；若确定对用户终端进行主基站切换，则向目标主基站发送切换请求消息；其中，切换请求消息中携带用于指示用户终端在源主基站已发生MCG失败的指示信息。

Description

双连接系统中处理连接失败的方法、装置及存储介质
相关申请的交叉引用
本申请要求在2019年02月14日提交中国专利局、申请号为201910113933.4、申请名称为“双连接系统中处理连接失败的方法、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，尤其是涉及双连接系统中处理连接失败的方法、装置及存储介质。
背景技术
在长期演进(Long Term Evolution，LTE)系统中，演进的通用陆地无线接入网(Evolution-Universal Terrestrial Radio Access Network，E-UTRAN)由多个基站(eNodeB)组成，eNodeB与核心网(Evolved Packet Core，EPC)之间通过S1接口连接，eNodeB之间通过X2接口连接。为了支持更高的数据吞吐量，用户终端(User Equipment，UE)可以通过两个eNodeB实现双连接。其中一个eNodeB作为主基站(Master Node，MN)，与核心网之间有控制面的连接；另外一个eNB作为辅基站(Secondary Node，SN)，与核心网之间没有控制面的连接。
在第五代移动通信(the 5th Generation mobile communication technology，5G)系统中，和LTE系统的双连接类似，也支持eNodeB和gNB(5g基站)的紧耦合互操作(tight interworking)以及gNB和gNB的双连接。在Rel-15以及以前的版本，如果UE在主基站发生连接失败，网络侧(包括主基站和辅基站)和UE之间的数据传递就停止了。为了进一步提高系统性能，Rel-16在主基站发生连接失败的时候，UE可以通过辅基站把该连接信息透传给主基站，主基站可以保持目前状态(即MN失败但是SN一直在传递数据)或者决 定目标基站，并向目标基站发起后续的切换过程；与此同时，SN节点和UE之间的数据传递还在继续。
请参见图1和图2，其中，图1为5G基站通过LTE基站连接到核心网的双连接系统架构示意图，图2为5G基站和LTE基站都连接到5G核心网的双连接系统架构示意图。
在图1中，LTE基站作为主基站通过S1接口与核心网连接，5G基站作为辅基站通过X2接口与主基站连接；在图2中，5G基站/LTE基站都可以通过NG接口连接到5G核心网作为主基站，LTE基站/5G基站通过Xn接口与主基站连接。
在现有技术中，若UE发生主服务小区集合失败(Master Cell Group failure，MCG failure)时，主基站在收到UE通过辅基站传递的MCG failure信息后，如果主基站决定向合适的目标基站发起切换过程，则对于目标基站来说，由于不知道UE在源侧的状态，而无法进行合理的接纳控制以及目标辅基站的选择。另外，如果主基站决定不发起切换，由于当前服务的辅基站不知道目前主基站与核心网的连接状态，可能会请求释放辅基站(releases SN)，从而造成UE与网络侧数据传输中断。
鉴于此，在双连接系统中，当用户终端在主基站发生MCG failure时，如何对连接失败进行处理，来维持用户终端与网络侧的连接成为一个亟待解决的技术问题。
发明内容
本申请提供双连接系统中处理连接失败的方法、装置及存储介质，用以解决现有技术中存在的在双连接系统中，当用户终端在主基站发生MCG failure时，不能维持用户终端与网络侧连接的技术问题。
第一方面，为解决上述技术问题，本申请实施例提供的一种双连接系统中处理连接失败的方法，应用于源主基站，所述源主基站与源辅基站连接构成双连接系统，该方法的技术方案如下：
接收用户终端发送的主服务小区集合MCG失败信息，及所述用户终端的信道测量报告；
基于所述信道测量报告，确定是否对所述用户终端进行主基站切换；
若确定对所述用户终端进行主基站切换，则向目标主基站发送切换请求消息；其中，所述切换请求消息中携带用于指示用户终端在所述源主基站已发生MCG失败的指示信息。
通过在接收用户终端发送的主服务小区集合MCG失败信息，及用户终端的信道测量报告之后；让双连接系统中的源主基站基于信道测量报告，确定是否对用户终端进行主基站切换；若确定对用户终端进行主基站切换，则向目标主基站发送切换请求消息；其中，切换请求消息中携带用于指示用户终端在源主基站已发生MCG失败的指示信息。从而及时的让用户终端从源主基站切换到目标主基站，使用户终端能维持与网络侧的连接。
可选的，确定是否对所述用户终端进行主基站切换之后，还包括：
若确定不对所述用户终端进行主基站切换，则向所述源辅基站发送所述MCG失败的指示信息。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中的cause信息元。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中新增的信息元。
第二方面，本申请实施例提供了一种双连接系统中处理连接失败的方法，应用于目标主基站，所述目标主基站与目标辅基站连接构成双连接系统，该方法的技术方案如下：
接收源主基站发送的切换请求消息；其中，所述切换请求消息中携带用户终端在所述源主基站已发生MCG失败的指示信息；
基于所述切换请求消息，将所述用户终端的主基站从所述源主基站切换到所述目标主基站。
通过目标主基站接收到源主基站发送的切换请求消息，让目标主基站根 据该切换请求消息中携带的用户终端在源主基站已发生MCG失败的指示信息，可知该切换是由MCG失败引起的，属于紧急情况，需要立即对用户终端进行主基站切换，完成用户终端的接纳控制。从而及时的让用户终端从源主基站切换到目标主基站，使用户终端能维持与网络侧的连接。
可选的，接收源主基站发送的切换请求消息之后，还包括：
选取与所述源主基站连接的源辅基站，作为所述目标主基站的目标辅基站。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中的cause信息元。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中新增的信息元。
第三方面，本申请实施例提供了一种用于双连接系统中处理连接失败的装置，应用于源主基站，该装置包括：
接收单元，用于接收用户终端发送的主服务小区集合MCG失败信息，及所述用户终端的信道测量报告；
确定单元，用于基于所述信道测量报告，确定是否对所述用户终端进行主基站切换；
处理单元，用于若确定对所述用户终端进行主基站切换，则向目标主基站发送切换请求消息；其中，所述切换请求消息中携带用于指示用户终端在所述源主基站已发生MCG失败的指示信息。
可选的，确定是否对所述用户终端进行主基站切换之后，所述处理单元还用于：
若确定不对所述用户终端进行主基站切换，则向所述源辅基站发送所述MCG失败的指示信息。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中的cause信息元。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时， 所述MCG失败的指示信息为所述切换请求信息中新增的信息元。
第四方面，本申请实施例提供了一种用于双连接系统中处理连接失败的装置，应用于目标主基站，所述目标主基站与目标辅基站连接构成双连接系统，该装置包括：
接收单元，用于接收源主基站发送的切换请求消息；其中，所述切换请求消息中携带用户终端在所述源主基站已发生MCG失败的指示信息；
切换单元，用于基于所述切换请求消息，将所述用户终端的主基站从所述源主基站切换到所述目标主基站。
可选的，接收源主基站发送的切换请求消息之后，所述切换单元还用于：
选取与所述源主基站连接的源辅基站，作为所述目标主基站的目标辅基站。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中的cause信息元。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中新增的信息元。
第五方面，本申请实施例还提供一种双连接系统中处理连接失败的装置，应用于源主基站，所述源主基站与源辅基站连接构成双连接系统，该装置包括：处理器、存储器和收发机；
其中，处理器，用于读取存储器中的程序并执行下列过程：
接收用户终端发送的主服务小区集合MCG失败信息，及所述用户终端的信道测量报告；
基于所述信道测量报告，确定是否对所述用户终端进行主基站切换；
若确定对所述用户终端进行主基站切换，则向目标主基站发送切换请求消息；其中，所述切换请求消息中携带用于指示用户终端在所述源主基站已发生MCG失败的指示信息。
可选的，确定是否对所述用户终端进行主基站切换之后，所述处理器还用于：
若确定不对所述用户终端进行主基站切换，则向所述源辅基站发送所述MCG失败的指示信息。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中的cause信息元。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中新增的信息元。
第六方面，本申请实施例还提供一种双连接系统中处理连接失败的装置，应用于目标主基站，所述目标主基站与目标辅基站连接构成双连接系统，该装置包括：处理器、存储器和收发机；
其中，处理器，用于读取存储器中的程序并执行下列过程：
接收源主基站发送的切换请求消息；其中，所述切换请求消息中携带用户终端在所述源主基站已发生MCG失败的指示信息；
基于所述切换请求消息，将所述用户终端的主基站从所述源主基站切换到所述目标主基站。
可选的，接收源主基站发送的切换请求消息之后，所述处理器还用于：
选取与所述源主基站连接的源辅基站，作为所述目标主基站的目标辅基站。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中的cause信息元。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中新增的信息元。
第七方面，本申请实施例还提供一种计算机可读存储介质，包括：
所述计算机可读存储介质存储有计算机指令，当所述计算机指令在计算机上运行时，使得计算机执行如上述第一方面或第二方面所述的方法。
通过本申请实施例的上述一个或多个实施例中的技术方案，本申请实施例至少具有如下技术效果：
在本申请提供的实施例中，通过在接收用户终端发送的主服务小区集合 MCG失败信息，及用户终端的信道测量报告之后；让双连接系统中的源主基站基于信道测量报告，确定是否对用户终端进行主基站切换；若确定对用户终端进行主基站切换，则向目标主基站发送切换请求消息；其中，切换请求消息中携带用于指示用户终端在源主基站已发生MCG失败的指示信息。从而及时的让用户终端从源主基站切换到目标主基站，使用户终端能维持与网络侧的连接。
附图说明
图1为5G基站通过LTE基站连接到核心网的双连接系统架构示意图；
图2为5G基站和LTE基站都连接到5G核心网的双连接系统架构示意图；
图3为现有技术中，发生MCG失败时基站的切换流程图；
图4为本申请实施例提供的源主基站侧双连接系统中处理连接失败方法的流程图；
图5为本申请实施例提供的目标主基站侧双连接系统中处理连接失败方法的流程图；
图6为本申请实施例提供的在发送MCG失败时，源主基站与目标主基站进行切换的流程图；
图7为本申请实施例提供的在发送MCG失败时，源主基站保持目前状态时的流程图；
图8为本申请实施例提供的源主基站侧的双连接系统中处理连接失败装置的结构示意图；
图9为本申请实施例提供的目标主基站侧的双连接系统中处理连接失败装置的结构示意图；
图10为本申请实施例提供的源主基站侧的另一双连接系统中处理连接失败装置的结构示意图；
图11为本申请实施例提供的目标主基站侧的另一双连接系统中处理连接失败装置的结构示意图。
具体实施方式
本申请实施列提供双连接系统中处理连接失败的方法、装置及存储介质，以解决现有技术中存在的在双连接系统中，当用户终端在主基站发生MCG failure时，不能维持用户终端与网络侧连接的技术问题。
本申请实施例中的技术方案为解决上述的技术问题，总体思路如下：
提供一种双连接系统中处理连接失败的方法，应用于源主基站，源主基站与源辅基站连接构成双连接系统，该方法包括：接收用户终端发送的主服务小区集合MCG失败信息，及用户终端的信道测量报告；基于信道测量报告，确定是否对用户终端进行主基站切换；若确定对用户终端进行主基站切换，则向目标主基站发送切换请求消息；其中，切换请求消息中携带用于指示用户终端在源主基站已发生MCG失败的指示信息。
由于在上述方案中，通过在接收用户终端发送的主服务小区集合MCG失败信息，及用户终端的信道测量报告之后；让双连接系统中的源主基站基于信道测量报告，确定是否对用户终端进行主基站切换；若确定对用户终端进行主基站切换，则向目标主基站发送切换请求消息；其中，切换请求消息中携带用于指示用户终端在源主基站已发生MCG失败的指示信息。从而及时的让用户终端从源主基站切换到目标主基站，使用户终端能维持与网络侧的连接。
为了使本领域的技术人员能够更清楚的理解本申请实施例提供的技术方案，在详细介绍本申请实施例提供的技术方案之前，先对现有技术中，发生MCG失败时基站的切换流程图进行介绍，如图3所示。
步骤301：用户终端向源辅基站发送MCG失败报告(MCG failure)。
具体的，用户终端通过分离式无线信号承载器(SPLIT Signal Radio Bearer，SPLIT SRB)向网络侧上报发生了MCG failure。
步骤302：源辅基站向源主基站发送无线资源控制(Radio Resource Control，RRC)消息。
源辅基站在接收到用户终端发送的MCG失败报告后，不解析该MCG失 败报告，而是把该MCG失败报告通过RRC消息透传给源主基站。
步骤303：源主基站向目标主基站发送切换请求。
源主基站根据用户终端定时上报的测量信息及MCG失败报告决定切换用户终端的目标基站，并向目标主基站发起切换过程。
步骤304：目标主基站向目标辅基站发送增加目标辅基站的请求。
在目标主基站接收到切换请求之后，发现自身任务过重，而周围的基站中存在可以承载源主基站任务的基站，于是目标主基站决定建立双连接来承载源主基站的任务，进而目标主基站将能承载源主基站任务的基站作为目标辅基站，并向其发送增加目标辅基站的请求。
步骤305：目标辅基站向目标主基站返回增加目标辅基站的响应消息。
通过步骤304和步骤305使目标主基站根据已有的信息决定增加目标辅基站，完成双连接的建立。
步骤306：目标主基站向源主基站反馈切换完成信息。
在目标主基站完成双连接的建立后，需要向源主基站反馈切换完成信息。
步骤307a：源主基站向源辅基站发送释放源辅基站的请求。
步骤307b：源辅基站向源主基站返回释放源辅基站的响应消息。
在目标主基站完成切换后，通过步骤307a和步骤307b让源主基站向源辅基站发起源辅基站的释放过程。
步骤308a：源主基站向源辅基站发送RRC重配置消息。
步骤308b：源辅基站向用户终端转发RRC重配置消息。
通过步骤308a和步骤308b让源主基站通过源辅基站向用户终端发送RRC重配置消息，其中，RRC重配置消息中携带让用户终端从源主基站切换到目标主基站的切换命令(handover command)，在该切换命令中携带了目标主基站使用的是双连接，以及与目标主基站建立双连接的目标辅基站的相关信息。
步骤309：用户终端与目标主基站完成随机接入。
用户终端根据接收到的RRC重配置消息中携带的切换命令，从源主基站 切换到目标主基站，以完成与目标主基站的随机接入。
步骤310：用户终端向目标主基站发送完成RRC重连接信息。
在用户终端完成与目标主基站的随机接入后，还需要向目标主基站发送完成RRC重连接消息，使目标主基站知道用户终端已完成与其建立的连接。
步骤311：用户终端与目标辅基站完成随机接入。
用户终端根据RRC重配置消息中携带的切换命令，知道目标主基站采用的是双连接，所以用户终端还需要根据切换命令中的目标辅基站的相关信息与目标辅基站完成随机接入。
步骤312：目标主基站向目标辅基站发送完成目标辅基站重配置。
通过步骤309～步骤312用户终端发起随机接入，并且在成功后给目标主基站发送重配置完成消息。
步骤313a：源辅基站向源主基站发送辅基站的数据量报告。
步骤313b：源主基站向核心网转发辅基站的数据量报告。
如果需要，通过步骤313a和步骤313b可以使网络侧发起辅基站的数据量报告的上报，使核心网知道用户终端对应的主基站、辅基站承载用户终端的数据量的情况。
步骤314：源主基站向目标主基站发送辅基站状态前传。
步骤315：服务网关通过源主基站完成与目标主基站之间的数据前传。
通过步骤314和步骤315让源主基站侧发起数据前传过程，将用户终端的相关数据转移到目标主基站。
步骤316：目标主基站向核心网发送路径切换请求。
步骤317：核心网对服务网关进行承载修改。
步骤318a：服务网关与目标主基站建立新路径。
步骤318b：服务网关与目标辅基站建立新路径。
步骤319：核心网向目标主基站发送路径切换请求确认。
通过步骤316～步骤319，完成用户面数据通道的更新。
步骤320：目标主基站向源辅基站发送用户终端上下文释放。
步骤321：源主基站向源辅基站发送用户终端上下文释放；
通过步骤320和步骤321使源侧(源主基站、源辅基站)删除用户终端上下文。
为了更好的理解上述技术方案，下面通过附图以及具体实施例对本申请技术方案做详细的说明，应当理解本申请实施例以及实施例中的具体特征是对本申请技术方案的详细的说明，而不是对本申请技术方案的限定，在不冲突的情况下，本申请实施例以及实施例中的技术特征可以相互组合。
请参考图4，本申请实施例提供一种双连接系统中处理连接失败的方法，应用于源主基站，源主基站与源辅基站连接构成双连接系统，该方法的处理过程如下：
步骤401：接收用户终端发送的主服务小区集合MCG失败信息，及用户终端的信道测量报告。
步骤402：基于信道测量报告，确定是否对用户终端进行主基站切换。
步骤403：若确定对用户终端进行主基站切换，则向目标主基站发送切换请求消息；其中，切换请求消息中携带用于指示用户终端在源主基站已发生MCG失败的指示信息。
当用户终端与源主基站之间发生MCG失败后，用户终端向源辅基站发送MCG失败信息，使源辅基站将该MCG失败信息转发给源主基站。
在源主基站接收到由源辅基站转发的用户终端发送的MCG失败信息后，根据接收到的最新的用户终端的信道测量报告，确定是否对用户终端进行主基站切换。
例如，源主基站根据用户终端的测量报告，确定用户终端与A基站之间的信道质量较好，于是确定让用户终端进行主基站切换，并将A基站作为目标主基站。若源主基站根据用户终端的测量报告，确定没有基站与用户终端之间的信道质量达到指定阈值，则决定暂不让用户终端进行主基站切换。
若源主基站确定对用户终端进行主基站切换，则向目标主基站发送切换请求消息，其中，切换请求消息中携带用于指示用户终端在源主基站已发生 MCG失败的指示信息。这样可以使目标主基站根据MCG失败的指示信息，进行用户终端的接纳控制。从而及时的让用户终端从源主基站切换到目标主基站，使用户终端能维持与网络侧的连接。
进一步的，在切换请求信息中还携带了源辅基站的信息。这样使得目标主基站能够指导源辅基站继续为用户终端提供服务，从而在进行目标辅基站选择时将源辅基站选为对应的目标辅基站，进而保持在进行主基站切换的过程中，用户终端与网络侧的数据传递不被中断。
在本申请提供的实施例中，在源主基站确定是否对用户终端进行主基站切换之后，若确定不对用户终端进行主基站切换，则向源辅基站发送MCG失败的指示信息。
由于源辅基站接收用户终端发送的MCG失败信息时，并不会对该MCG失败信息进行解析，所以源辅基站并不知道用户终端在源主基站发生了MCG失败。通过源主基站将MCG失败的指示信息发送给源辅基站，可以使源辅基站根据MCG失败的指示信息确定无线资源管理(Radio Resource Management，RRM)决策。
在本申请提供的实施例中，当源主基站与目标主基站通过X2或Xn接口通信时，MCG失败的指示信息为切换请求信息中的cause信息元。
请参见表1，为切换请求消息(HANDOVER REQUEST)中cause信息元的定义方式。
表1
Figure PCTCN2020075143-appb-000001
其中，M代表维护。
例如，当用户终端在源主基站发生MCG失败时，用户终端将MCG失败信息发送给与源主基站连接的源辅基站，让源辅基站将该MCG失败信息转发给源主基站。
当源主基站接收到用户终端发送的该MCG失败信息时，根据用户终端最新的信道测量报告，确定对用户终端进行主基站切换，并将目标主基站作为切换对象。源主基站向目标主基站发送切换请求消息，在该切换请求消息中使用Cause信息元指示用户终端在源主基站已发生MCG失败的指示信息，使目标主基站知道该切换是由MCG失败引起的，属于紧急情况，需要立即进行主基站切换，完成用户终端的接纳控制。从而及时的让用户终端从源主基站切换到目标主基站，使用户终端能维持与网络侧的连接。
并且，在切换请求信息中还可以携带源辅基站的信息，使目标主基站在选择目标辅基站时可以将源辅基站选择为目标辅基站，从而维持用户终端与网络侧的数据传输不被中断。
若源主基站根据信道测量报告，确定不进行主基站切换，则将MCG失败的指示信息发送给源辅基站，使源辅基站根据MCG失败的指示信息确定RRM决策。
在本申请提供的实施例中，当源主基站与目标主基站通过X2或Xn接口通信时，MCG失败的指示信息为切换请求信息中新增的信息元。
请参见表2，为切换请求消息(HANDOVER REQUEST)中新增的信息元的定义方式。
表2
Figure PCTCN2020075143-appb-000002
在表2中，MCG Failure indication为新增的信息元的名称，O代表操作。
例如，当用户终端在源主基站发生MCG失败时，用户终端将MCG失败信息发送给与源主基站连接的源辅基站，让源辅基站将该MCG失败信息转发给源主基站。
当源主基站接收到用户终端发送的该MCG失败信息时，根据用户终端最新的信道测量报告，确定对用户终端进行主基站切换，并将目标主基站作为切换对象。源主基站向目标主基站发送切换请求消息，在该切换请求消息中使用新增的信息元(MCG Failure indication)作为指示用户终端在源主基站已发生MCG失败的指示信息，使目标主基站知道该切换是由MCG失败引起的，属于紧急情况，需要立即进行主基站切换，完成用户终端的接纳控制。从而及时的让用户终端从源主基站切换到目标主基站，使用户终端能维持与网络侧的连接。
并且，在切换请求信息中还可以携带源辅基站的信息，使目标主基站在选择目标辅基站时可以将源辅基站选择为目标辅基站，从而维持用户终端与网络侧的数据传输不被中断。
在源主基站将MCG识别的指示信息发送给目标主基站之后，目标主基站的处理过程请参见以下内容。
请参见图5，基于同一申请构思，本申请一实施例中提供一种双连接系统 中处理连接失败的方法，应用于目标主基站，所述目标主基站与目标辅基站连接构成双连接系统，该方法包括：
步骤501：接收源主基站发送的切换请求消息；其中，切换请求消息中携带用户终端在源主基站已发生MCG失败的指示信息。
步骤502：基于切换请求消息，将用户终端的主基站从源主基站切换到所述目标主基站。
当目标主基站接收到源主基站发送的切换请求消息后，目标主基站根据该切换请求消息中携带的用户终端在源主基站已发生MCG失败的指示信息，可知该切换是由MCG失败引起的，属于紧急情况，需要立即对用户终端进行主基站切换，完成用户终端的接纳控制。从而及时的让用户终端从源主基站切换到目标主基站，使用户终端能维持与网络侧的连接。
可选的，接收源主基站发送的切换请求消息之后，还可以选取与源主基站连接的源辅基站，作为目标主基站的目标辅基站。
由于在切换请求信息中还携带了源辅基站的信息，所以目标主基站在选择目标辅基站时可以将源辅基站选择为目标辅基站，从而维持用户终端与网络侧的数据传输不被中断。
可选的，源主基站与目标主基站通过X2或Xn接口通信时，MCG失败的指示信息为切换请求信息中的cause信息元。或者，MCG失败的指示信息为切换请求信息中新增的信息元。
由于cause信息元、新增的信息元在切换请求消息中的定义方式、及举例已在介绍源主基站侧的处理过程时介绍，故在此不再赘述。
为了使本领域的技术人员能够充分理解本申请实施提供的方案，下面对用户终端发生MCG失败时的切换过程，进行详细描述，具体切换流程请参见图6：
步骤601：用户终端向源辅基站发送MCG失败信息。
步骤602：源辅基站向源主基站转发MCG失败信息。
源辅基站在接收到用户终端发送的MCG失败信息后，不解析该MCG失 败信息，而是把该MCG失败信息通过RRC消息透传给源主基站。
步骤603：源主基站向目标主基站发送切换请求消息，携带MCG失败的指示信息。
其中，切换请求消息中携带用于指示用户终端在源主基站已发生MCG失败的指示信息。该MCG失败的指示信息，可以通过切换请求消息中的cause信息元或新增的信息元进行指示。
若源主基站根据用户终端的信道测量信息及MCG失败的指示信息，决定对用户终端的主基站进行切换，并将目标主基站选定为切换对象，向目标主基站发起切换过程。
步骤604：目标主基站向目标辅基站发送源辅基站增加目标辅基站的请求。
步骤605：源辅基站向目标主基站返回增加目标辅基站的响应消息。
通过步骤604和步骤605使目标主基站根据切换请求消息中携带的源辅基站的信息及MCG失败的指示信息，决定将源辅基站选择为新增加的目标辅基站。
步骤606：目标主基站向源主基站反馈切换完成信息。
步骤607：源主基站向源辅基站发送释放源辅基站的请求。
步骤608：源辅基站向源主基站返回释放源辅基站的响应消息。
通过步骤607和步骤608让源主基站向源辅基站发起源辅基站的释放过程。
步骤609a：源主基站向源辅基站发送RRC重配置消息。
步骤609b：源辅基站向用户终端转发RRC重配置消息。
通过步骤609a和步骤609b让源主基站通过源辅基站向用户终端发送RRC重配置消息，让用户终端从源主基站切换到目标主基站。
步骤610：用户终端与目标主基站完成随机接入。
步骤611：用户终端向目标主基站发送完成RRC重连接信息。
步骤612：目标主基站向目标辅基站(即源辅基站)发送完成目标辅基站重配置。
通过步骤610～步骤612用户终端发起随机接入，并且在成功后给目标主基站发送重配置完成消息。
步骤613：源主基站向目标主基站发送辅基站状态前传。
步骤614：服务网关通过源主基站完成与目标主基站之间的数据前传。
通过步骤613和步骤614让源主基站侧，发起数据前传过程，将用户终端的相关数据转移到目标主基站。
步骤615：目标主基站向核心网发送路径切换请求。
步骤616：核心网对服务网关进行承载修改。
步骤617a：服务网关与目标主基站建立新路径。
步骤617b：服务网关与目标辅基站(即源辅基站)建立新路径。
步骤618：核心网向目标主基站发送路径切换请求确认。
通过步骤616～步骤618，完成用户面数据通道的更新。
步骤619：目标主基站向源基站发送用户终端上下文释放。
步骤620：源主基站向源辅基站发送用户终端上下文释放。
通过步骤615和步骤620使源侧删除用户终端上下文。最终将用户终端的主基站从源主基站切换到目标主基站。
请参见图7，用户终端处于双连接状态，主基站是eNB1(即源主基站)，辅基站是gNB2(即源辅基站)。用户终端在源主基站发生了MCG失败，用户终端通过SPLIT SRB通知源主基站发生了MCG FAILURE(即MCG失败)。源主基站决定保持目前的状态。此时的处理流程如下：
步骤701：用户终端向源辅基站发送MCG失败信息。
步骤702：源辅基站向源主基站转发MCG失败信息。
具体的，源辅基站是通过RRC信息传输，将MCG失败信息透传给源主基站。
步骤703：源主基站向源辅基站发送MCG失败的指示信息。
在源主基站接收到用户终端发送的MCG失败信息后，根据用户终端的信道测量报告，决定不对用户终端的主基站进行切换，保持目前的状态，于是 向源辅基站发送MCG失败的指示信息，使用户终端继续与源辅基站进行数据传输，从而避免源辅基站发起承载变化或源辅基站释放的过程。
基于同一申请构思，本申请一实施例中提供一种用于双连接系统中处理连接失败的装置，该装置的双连接系统中处理连接失败方法的具体实施方式可参见源主基站侧方法实施例部分的描述，重复之处不再赘述，请参见图8，该装置包括：
接收单元801，用于接收用户终端发送的主服务小区集合MCG失败信息，及所述用户终端的信道测量报告；
确定单元802，用于基于所述信道测量报告，确定是否对所述用户终端进行主基站切换；
处理单元803，用于若确定对所述用户终端进行主基站切换，则向目标主基站发送切换请求消息；其中，所述切换请求消息中携带用于指示用户终端在所述源主基站已发生MCG失败的指示信息。
可选的，确定是否对所述用户终端进行主基站切换之后，所述处理单元803还用于：
若确定不对所述用户终端进行主基站切换，则向所述源辅基站发送所述MCG失败的指示信息。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中的cause信息元。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中新增的信息元。
基于同一申请构思，本申请一实施例中提供一种用于双连接系统中处理连接失败的装置，该装置的双连接系统中处理连接失败方法的具体实施方式可参见目标主基站侧方法实施例部分的描述，重复之处不再赘述，请参见图9，该装置包括：
接收单元901，用于接收源主基站发送的切换请求消息；其中，所述切换请求消息中携带用户终端在所述源主基站已发生MCG失败的指示信息；
切换单元902，用于基于所述切换请求消息，将所述用户终端的主基站从所述源主基站切换到所述目标主基站。
可选的，接收源主基站发送的切换请求消息之后，所述切换单元902还用于：
选取与所述源主基站连接的源辅基站，作为所述目标主基站的目标辅基站。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中的cause信息元。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中新增的信息元。
如图10所示，本申请实施例提供的一种双连接系统中处理连接失败的装置，应用于源主基站，所述源主基站与源辅基站连接构成双连接系统，该装置包括：处理器1001、存储器1002和收发机1003；
其中，处理器1001，用于读取存储器1002中的程序并执行下列过程：
接收用户终端发送的主服务小区集合MCG失败信息，及所述用户终端的信道测量报告；
基于所述信道测量报告，确定是否对所述用户终端进行主基站切换；
若确定对所述用户终端进行主基站切换，则向目标主基站发送切换请求消息；其中，所述切换请求消息中携带用于指示用户终端在所述源主基站已发生MCG失败的指示信息。
可选的，确定是否对所述用户终端进行主基站切换之后，所述处理器1001还用于：
若确定不对所述用户终端进行主基站切换，则向所述源辅基站发送所述MCG失败的指示信息。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中的cause信息元。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时， 所述MCG失败的指示信息为所述切换请求信息中新增的信息元。
处理器1001负责管理总线架构和通常的处理，存储器1002可以存储处理器1001在执行操作时所使用的数据。收发机1003用于在处理器1001的控制下接收和发送数据。
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1001代表的一个或多个处理器1001和存储器1002代表的存储器1002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。处理器1001负责管理总线架构和通常的处理，存储器1002可以存储处理器1001在执行操作时所使用的数据。
本申请实施例揭示的流程，可以应用于处理器1001中，或者由处理器1001实现。在实现过程中，信号处理流程的各步骤可以通过处理器1001中的硬件的集成逻辑电路或者软件形式的指令完成。处理器1001可以是通用处理器1001、数字信号处理器1001、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器1001可以是微处理器1001或者任何常规的处理器1001等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器1001执行完成，或者用处理器1001中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器1002，闪存、只读存储器1002，可编程只读存储器1002或者电可擦写可编程存储器1002、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1002，处理器1001读取存储器1002中的信息，结合其硬件完成信号处理流程的步骤。
如图11所示，本申请实施例提供的一种双连接系统中处理连接失败的装置，应用于目标主基站，所述目标主基站与目标辅基站连接构成双连接系统，该装置包括：处理器1101、存储器1102和收发机1103；
其中，处理器1101，用于读取存储器1102中的程序并执行下列过程：
接收源主基站发送的切换请求消息；其中，所述切换请求消息中携带用 户终端在所述源主基站已发生MCG失败的指示信息；
基于所述切换请求消息，将所述用户终端的主基站从所述源主基站切换到所述目标主基站。
可选的，接收源主基站发送的切换请求消息之后，所述处理器1101还用于：
选取与所述源主基站连接的源辅基站，作为所述目标主基站的目标辅基站。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中的cause信息元。
可选的，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中新增的信息元。
处理器1101负责管理总线架构和通常的处理，存储器1102可以存储处理器1101在执行操作时所使用的数据。收发机1103用于在处理器1101的控制下接收和发送数据。
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1101代表的一个或多个处理器1101和存储器1102代表的存储器1102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。处理器1101负责管理总线架构和通常的处理，存储器1102可以存储处理器1101在执行操作时所使用的数据。
本申请实施例揭示的流程，可以应用于处理器1101中，或者由处理器1101实现。在实现过程中，信号处理流程的各步骤可以通过处理器1101中的硬件的集成逻辑电路或者软件形式的指令完成。处理器1101可以是通用处理器1101、数字信号处理器1101、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器1101可以是微处理器1101或者任何常规的处理器1101等。结合本申请实施例所公 开的方法的步骤可以直接体现为硬件处理器1101执行完成，或者用处理器1101中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器1102，闪存、只读存储器1102，可编程只读存储器1102或者电可擦写可编程存储器1102、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1102，处理器1101读取存储器1102中的信息，结合其硬件完成信号处理流程的步骤。
基于同一申请构思，本申请实施例还提一种计算机可读存储介质，包括：
所述计算机可读存储介质存储有计算机指令，当所述计算机指令在计算机上运行时，使得计算机执行如上所述的源主基站侧或目标主基站侧的双连接系统中处理连接失败方法。
在本申请提供的实施例中，通过在接收用户终端发送的主服务小区集合MCG失败信息，及用户终端的信道测量报告之后；让双连接系统中的源主基站基于信道测量报告，确定是否对用户终端进行主基站切换；若确定对用户终端进行主基站切换，则向目标主基站发送切换请求消息；其中，切换请求消息中携带用于指示用户终端在源主基站已发生MCG失败的指示信息。从而及时的让用户终端从源主基站切换到目标主基站，使用户终端能维持与网络侧的连接。
本领域内的技术人员应明白，本申请实施例可提供为方法、系统、或计算机程序产品。因此，本申请实施例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，本申请实施例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、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请实施例是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器， 使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
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 (21)

  1. 一种双连接系统中处理连接失败的方法，应用于源主基站，所述源主基站与源辅基站连接构成双连接系统，其特征在于，包括：
    接收用户终端发送的主服务小区集合MCG失败信息，及所述用户终端的信道测量报告；
    基于所述信道测量报告，确定是否对所述用户终端进行主基站切换；
    若确定对所述用户终端进行主基站切换，则向目标主基站发送切换请求消息；其中，所述切换请求消息中携带用于指示用户终端在所述源主基站已发生MCG失败的指示信息。
  2. 如权利要求1所述的方法，其特征在于，确定是否对所述用户终端进行主基站切换之后，还包括：
    若确定不对所述用户终端进行主基站切换，则向所述源辅基站发送所述MCG失败的指示信息。
  3. 如权利要求1所述的方法，其特征在于，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中的cause信息元。
  4. 如权利要求1所述的方法，其特征在于，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中新增的信息元。
  5. 如权利要求1所述的方法，其特征在于，所述切换请求消息中还携带源辅基站的信息。
  6. 一种双连接系统中处理连接失败的方法，应用于目标主基站，所述目标主基站与目标辅基站连接构成双连接系统，其特征在于，包括：
    接收源主基站发送的切换请求消息；其中，所述切换请求消息中携带用户终端在所述源主基站已发生MCG失败的指示信息；
    基于所述切换请求消息，将所述用户终端的主基站从所述源主基站切换 到所述目标主基站。
  7. 如权利要求6所述的方法，其特征在于，接收源主基站发送的切换请求消息之后，还包括：
    选取与所述源主基站连接的源辅基站，作为所述目标主基站的目标辅基站。
  8. 如权利要求6或7所述的方法，其特征在于，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中的cause信息元。
  9. 如权利要求6或7所述的方法，其特征在于，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中新增的信息元。
  10. 一种双连接系统中处理连接失败的装置，应用于源主基站，所述源主基站与源辅基站连接构成双连接系统，其特征在于，包括：
    接收单元，用于接收用户终端发送的主服务小区集合MCG失败信息，及所述用户终端的信道测量报告；
    确定单元，用于基于所述信道测量报告，确定是否对所述用户终端进行主基站切换；
    处理单元，用于若确定对所述用户终端进行主基站切换，则向目标主基站发送切换请求消息；其中，所述切换请求消息中携带用于指示用户终端在所述源主基站已发生MCG失败的指示信息。
  11. 一种双连接系统中处理连接失败的装置，应用于目标主基站，所述目标主基站与目标辅基站连接构成双连接系统，其特征在于，包括：
    接收单元，用于接收源主基站发送的切换请求消息；其中，所述切换请求消息中携带用户终端在所述源主基站已发生MCG失败的指示信息；
    切换单元，用于基于所述切换请求消息，将所述用户终端的主基站从所述源主基站切换到所述目标主基站。
  12. 一种双连接系统中处理连接失败的装置，应用于源主基站，所述源 主基站与源辅基站连接构成双连接系统，其特征在于，该装置包括：处理器、存储器和收发机；
    其中，处理器，用于读取存储器中的程序并执行下列过程：
    接收用户终端发送的主服务小区集合MCG失败信息，及所述用户终端的信道测量报告；
    基于所述信道测量报告，确定是否对所述用户终端进行主基站切换；
    若确定对所述用户终端进行主基站切换，则向目标主基站发送切换请求消息；其中，所述切换请求消息中携带用于指示用户终端在所述源主基站已发生MCG失败的指示信息。
  13. 如权利要求12所述的装置，其特征在于，确定是否对所述用户终端进行主基站切换之后，所述处理器还用于：
    若确定不对所述用户终端进行主基站切换，则向所述源辅基站发送所述MCG失败的指示信息。
  14. 如权利要求12所述的装置，其特征在于，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中的cause信息元。
  15. 如权利要求12所述的装置，其特征在于，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中新增的信息元。
  16. 如权利要求12所述的装置，其特征在于，所述切换请求消息中还携带源辅基站的信息。
  17. 一种双连接系统中处理连接失败的装置，应用于目标主基站，所述目标主基站与目标辅基站连接构成双连接系统，其特征在于，该装置包括：处理器、存储器和收发机；
    其中，处理器，用于读取存储器中的程序并执行下列过程：
    接收源主基站发送的切换请求消息；其中，所述切换请求消息中携带用户终端在所述源主基站已发生MCG失败的指示信息；
    基于所述切换请求消息，将所述用户终端的主基站从所述源主基站切换到所述目标主基站。
  18. 如权利要求17所述的装置，其特征在于，接收源主基站发送的切换请求消息之后，所述处理器还用于：
    选取与所述源主基站连接的源辅基站，作为所述目标主基站的目标辅基站。
  19. 如权利要求17或18所述的装置，其特征在于，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中的cause信息元。
  20. 如权利要求17或18所述的装置，其特征在于，当所述源主基站与所述目标主基站通过X2或Xn接口通信时，所述MCG失败的指示信息为所述切换请求信息中新增的信息元。
  21. 一种计算机可读存储介质，其特征在于：
    所述计算机可读存储介质存储有计算机指令，当所述计算机指令在计算机上运行时，使得计算机执行如权利要求1-9中任一项所述的方法。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116133063A (zh) * 2021-11-15 2023-05-16 中国移动通信有限公司研究院 信息上报方法、装置、相关设备及存储介质
CN119789163A (zh) * 2024-12-27 2025-04-08 中国电信股份有限公司技术创新中心 低空通信方法、装置、系统、基站设备和可读存储介质

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114095980B (zh) * 2020-08-25 2023-05-26 大唐移动通信设备有限公司 条件辅小区组中的主小区切换处理方法、设备及存储介质
CN112399515B (zh) * 2020-11-19 2023-06-09 维沃移动通信有限公司 通信处理方法及装置
US12289645B2 (en) 2021-01-28 2025-04-29 Apple Inc. MCG failure recovery enhancement in DC mode
CN115460718A (zh) 2021-06-09 2022-12-09 中兴通讯股份有限公司 通信连接恢复方法、基站、计算机可读存储介质

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101047974A (zh) * 2006-03-29 2007-10-03 华为技术有限公司 一种演进网络系统及该系统切换时数据传输方法
WO2009089782A1 (fr) * 2008-01-08 2009-07-23 Huawei Technologies Co., Ltd. Procédé de gestion d'une liaison radio, et procédé et dispositif de communication utilisés après la défaillance d'une liaison radio
CN103428788A (zh) * 2012-05-18 2013-12-04 华为技术有限公司 一种数据转发的方法、设备及通讯系统
CN108337701A (zh) * 2017-01-19 2018-07-27 工业和信息化部电信研究院 一种传输路径切换方法
CN108880707A (zh) * 2017-05-09 2018-11-23 索尼公司 用于无线通信的电子设备和方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102378287B (zh) * 2010-08-11 2014-12-10 电信科学技术研究院 一种主小区更换的小区配置方法及装置
EP3244657B1 (en) * 2015-01-26 2019-05-22 Huawei Technologies Co. Ltd. Switching device and method
CN107690162B (zh) * 2016-08-03 2021-05-11 中兴通讯股份有限公司 小区连接失败的处理方法及装置
US10820271B2 (en) * 2017-07-25 2020-10-27 FG Innovation Company Limited Method and apparatus of power saving for discontinuous reception

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101047974A (zh) * 2006-03-29 2007-10-03 华为技术有限公司 一种演进网络系统及该系统切换时数据传输方法
WO2009089782A1 (fr) * 2008-01-08 2009-07-23 Huawei Technologies Co., Ltd. Procédé de gestion d'une liaison radio, et procédé et dispositif de communication utilisés après la défaillance d'une liaison radio
CN103428788A (zh) * 2012-05-18 2013-12-04 华为技术有限公司 一种数据转发的方法、设备及通讯系统
CN108337701A (zh) * 2017-01-19 2018-07-27 工业和信息化部电信研究院 一种传输路径切换方法
CN108880707A (zh) * 2017-05-09 2018-11-23 索尼公司 用于无线通信的电子设备和方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA) and NR; Multi-connectivity; Stage 2 (Release 15)", 3GPP STANDARD; TECHNICAL SPECIFICATION; 3GPP TS 37.340, 15 January 2019 (2019-01-15), XP051576841 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116133063A (zh) * 2021-11-15 2023-05-16 中国移动通信有限公司研究院 信息上报方法、装置、相关设备及存储介质
CN119789163A (zh) * 2024-12-27 2025-04-08 中国电信股份有限公司技术创新中心 低空通信方法、装置、系统、基站设备和可读存储介质

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