WO2017181828A1 - 一种双连接操作的方法及装置、计算机存储介质 - Google Patents

一种双连接操作的方法及装置、计算机存储介质 Download PDF

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Publication number
WO2017181828A1
WO2017181828A1 PCT/CN2017/078663 CN2017078663W WO2017181828A1 WO 2017181828 A1 WO2017181828 A1 WO 2017181828A1 CN 2017078663 W CN2017078663 W CN 2017078663W WO 2017181828 A1 WO2017181828 A1 WO 2017181828A1
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Prior art keywords
base station
secondary base
message
identity
primary base
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PCT/CN2017/078663
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English (en)
French (fr)
Inventor
方建民
Original Assignee
中兴通讯股份有限公司
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Priority to EP17785313.2A priority Critical patent/EP3448113A4/en
Publication of WO2017181828A1 publication Critical patent/WO2017181828A1/zh

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    • 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
    • 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
    • H04W36/00695—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using split of the control plane or user plane
    • 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
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • the present application relates to, but is not limited to, the field of communication technologies, and in particular, to a method and apparatus for dual connectivity operation, and a computer storage medium.
  • the Long Term Evolution (LTE) network includes an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and a corresponding Core Network (CN).
  • the E-UTRAN includes an evolved Node B (eNB).
  • the CN includes a Mobile Management Entity (MME) and a Serving Gateway (S-GW).
  • MME Mobile Management Entity
  • S-GW Serving Gateway
  • the eNB and the CN are connected through an S1 interface, and the eNBs can be connected through an X2 interface.
  • One eNB can manage one or more cells (Cells).
  • An interface between a user equipment (UE) and a cell is called a Uu interface (or an air interface).
  • a dual-connected terminal can be connected to two base stations at the same time.
  • One of the base stations is called a master eNB (MeNB for short) and the other base station is called a secondary eNB (SeNB for short).
  • MeNB master eNB
  • SeNB secondary eNB
  • the MeNB Under dual connectivity, the MeNB is responsible for the control of dual connectivity. There are two implementations of the data stream: a split bearer (Split bearer) and a master/secondary cell group bearer (MCG/SCG bearer).
  • Split Bearer As shown in Figure 1
  • MCG/SCG bearer When using Split Bearer (as shown in Figure 1), the downlink data is The S-GW flows to the MeNB, branches off at the MeNB, flows directly to the UE, and the other flows to the UE via the SeNB.
  • MCG/SCG bearer is used (as shown in FIG. 2), the downlink data is sent two data from the S-GW, one through the MeNB to the UE, and the other through the SeNB to the UE.
  • the embodiments of the present invention provide a method and a device for dual-connection operation, and a computer storage medium, so as to implement non-destructive interchange between the MeNB and the SeNB when the UE performs the dual connectivity operation.
  • a method of dual connectivity operation comprising:
  • the primary base station sends a primary base station and a secondary base station identity exchange request message to the secondary base station;
  • the primary base station After receiving the acknowledgement message of the secondary base station, the primary base station sends a radio resource control protocol connection reconfiguration message to the UE, where the radio resource control protocol connection reconfiguration message carries the primary base station and the secondary base station identity interchange indication information.
  • the primary base station and the secondary base station identity exchange request message are a handover request message, and the handover request message carries a primary base station and a secondary base station identity exchange indication information, where the acknowledgement message is a handover request acknowledgement message;
  • the primary base station and the secondary base station identity exchange request message are preset identity exchange request messages, and the preset identity exchange request message carries the X2 interface application protocol identifier of the UE on the primary base station side and the primary base station corresponding to The S1 interface of the UE on the mobile management entity side applies the protocol identifier, and the acknowledgement message is a preset identity exchange request acknowledgement message.
  • a dual connection operation device applied to a primary base station including
  • a first sending module configured to send a primary base station and a secondary base station identity exchange request message to the secondary base station
  • a receiving module configured to receive an acknowledgement message of the secondary base station
  • a second sending module configured to: after the receiving module receives the acknowledgement message of the secondary base station, send a radio resource control protocol connection reconfiguration message to the UE, where the radio resource control protocol
  • the connection reconfiguration message carries the primary base station and the secondary base station identity interchange indication information.
  • the primary base station and the secondary base station identity exchange request message are a handover request message, and the handover request message carries a primary base station and a secondary base station identity exchange indication information, where the acknowledgement message is a handover request acknowledgement message;
  • the primary base station and the secondary base station identity exchange request message are preset identity exchange request messages, and the preset identity exchange request message carries the X2 interface application protocol identifier of the UE on the primary base station side and the primary base station corresponding to The S1 interface of the UE on the mobile management entity side applies the protocol identifier, and the acknowledgement message is a preset identity exchange request acknowledgement message.
  • a method of dual connectivity operation comprising:
  • Radio resource control protocol connection reconfiguration message carries the primary base station and the secondary base station identity exchange indication information
  • the UE sends a radio resource control protocol connection reconfiguration complete message to the secondary base station before the identity exchange.
  • the UE performs identity exchange processing between the primary base station and the secondary base station, including:
  • the control plane connection of the interface between the UE and the cell is switched between the UE and the primary base station to a connection between the UE and the secondary base station.
  • a device for dual connectivity operation applied to a UE, comprising:
  • a receiving module configured to receive a RRC connection reconfiguration message, where the RRC connection reconfiguration message carries the primary base station and the secondary base station identity interchange indication information;
  • a processing module configured to perform identity exchange processing between the primary base station and the secondary base station
  • the sending module is configured to send a RRC connection reconfiguration complete message to the secondary base station before the identity exchange.
  • the processing module performs a primary base station and a secondary base station identity interchange process, including: connecting a control plane connection of the interface between the UE and the cell by using the UE and the primary base station Switch to the connection between the UE and the secondary base station.
  • a method of dual connectivity operation comprising:
  • the secondary base station receives the radio resource control protocol connection reconfiguration complete message of the UE
  • the secondary base station sends a path switch request message to the mobility management entity, where the path switch request message carries the primary base station and the secondary base station identity interchange indication information.
  • the secondary base station refers to a secondary base station before the identity exchange, and after the secondary base station receives the RRC connection reconfiguration complete message of the UE, performs identity exchange processing.
  • a dual connection operation device applied to a secondary base station including
  • a receiving module configured to receive a radio resource control protocol connection reconfiguration complete message of the UE
  • the sending module is configured to send a path switching request message to the mobility management entity, where the path switching request message carries the primary base station and the secondary base station identity interchange indication information.
  • the secondary base station refers to a secondary base station before the identity exchange, and after the receiving module receives the RRC connection reconfiguration complete message of the UE, the secondary base station performs identity exchange processing.
  • a method of dual connectivity operation comprising:
  • the mobility management entity receives a path switch request message of the secondary base station, where the path switch request message carries the primary base station and the secondary base station identity interchange indication information;
  • the mobility management entity performs identity exchange processing between the primary base station and the secondary base station;
  • the mobility management entity sends an acknowledgement message to the secondary base station before the identity exchange.
  • the mobility management entity performs a primary base station and a secondary base station identity interchange process, including:
  • the acknowledgement message is a path switch request acknowledgement message, or
  • the confirmation message is a preset path conversion request acknowledgement message, where the preset path switch request acknowledgement message carries the S1 interface application protocol identifier of the UE and the secondary base station of the mobile management entity side corresponding to the primary base station.
  • the S1 interface of the UE on the side applies a protocol identifier.
  • a dual connectivity operation device for a mobile management entity comprising:
  • a receiving module configured to receive a path switching request message of the secondary base station, where the path switching request message carries the primary base station and the secondary base station identity interchange indication information;
  • a processing module configured to perform identity exchange processing between the primary base station and the secondary base station
  • the sending module is configured to send an acknowledgement message to the secondary base station before the identity exchange.
  • the processing module performs a primary base station and a secondary base station identity interchange process, including: converting an S1 interface control plane connection of the UE from the mobility management entity to a primary base station to the mobility management entity Between the secondary base station and the secondary base station.
  • an embodiment of the present invention further provides a computer storage medium storing a computer program configured to perform the dual connection operation.
  • the embodiments of the present invention provide a dual-connection operation method and apparatus, and a computer storage medium, so that the UE can perform non-destructive interchange of the MeNB and the SeNB when performing the dual connectivity operation.
  • FIG. 1 is a schematic diagram of a related art Split Bearer
  • FIG. 2 is a schematic diagram of a related art MCG/SCG bearer
  • FIG. 3 is a flow chart of Embodiment 1 of the present invention.
  • FIG. 4 is a flow chart of Embodiment 2 of the present invention.
  • FIG. 5 is a first schematic diagram of an apparatus for dual connection operation according to an embodiment of the present invention.
  • FIG. 6 is a second schematic diagram of an apparatus for dual connection operation according to an embodiment of the present invention.
  • FIG. 7 is a third schematic diagram of an apparatus for dual connection operation according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram 4 of the apparatus for dual connection operation according to an embodiment of the present invention.
  • the MeNB is responsible for the control of the dual connection, if the UE and the MeNB lose connection, the impact on the UE is relatively large, and the identity exchange between the MeNB and the SeNB can be performed in time, and the UE only loses the connection with the SeNB, and the impact on the UE will be compared. small.
  • a dual connectivity operation method provided by this embodiment for a UE in a dual connectivity in which a primary/secondary cell group carries an MCG/SCG bearer type, includes:
  • the MeNB initiates an MeNB and SeNB identity exchange request to the SeNB (by carrying the MeNB and SeNB identity interchange indication in the existing HANDOVER REQUEST message or adopting the new MeNB and SeNB identity exchange request message).
  • the MeNB After receiving the acknowledgment message of the SeNB (the existing HANDOVER REQUEST ACKNOWLEDGE message or the new MeNB and SeNB identity exchange request acknowledgement message), the MeNB sends an RRC Connection Reconfiguration message to the UE, carrying the MeNB and SeNB identity interchange indication.
  • the acknowledgment message of the SeNB the existing HANDOVER REQUEST ACKNOWLEDGE message or the new MeNB and SeNB identity exchange request acknowledgement message
  • the MeNB After receiving the acknowledgment message of the SeNB (the existing HANDOVER REQUEST ACKNOWLEDGE message or the new MeNB and SeNB identity exchange request acknowledgement message), the MeNB sends an RRC Connection Reconfiguration message to the UE, carrying the MeNB and SeNB identity interchange indication.
  • the UE After receiving the RRC Connection Reconfiguration message carrying the MeNB and the SeNB identity exchange indication, the UE performs the MeNB and SeNB identity exchange on the UE side (including but not limited to: connecting the control plane connection of the Uu interface between the UE and the eNB1 to the UE and Between eNB2), and send an RRC Connection Reconfiguration Complete message to the SeNB.
  • the SeNB After receiving the RRC Connection Reconfiguration Complete message, the SeNB sends the message to the MME. Initiating a path switch request (by carrying the MeNB and SeNB identity interchange indication in the existing PATH SWITCH REQUEST message or adopting the new MeNB and SeNB Path Switch Request message).
  • the MME After receiving the path switching request of the SeNB, the MME performs the identity exchange between the MeNB and the SeNB on the network side (including but not limited to: the S1 interface control plane connection of the UE is switched between the MME and the eNB1 to the MME and the eNB2), and is sent to the SeNB.
  • An acknowledgment message (an existing PATH SWITCH REQUEST ACKNOWLEDGE message or a new MeNB and SeNB Path Switch Request Acknowledgement message) is sent.
  • the MeNB For the UE in the dual-connection of the Split bearer type, the MeNB first initiates the SeNB Modification process, and the dual-connection of the Split bearer type is modified to the dual connection of the MCG/SCG bearer type, and then the MeNB initiates the MeNB and SeNB identity exchange request to the SeNB. .
  • the UE when the UE performs the dual connectivity operation, the UE can perform the lossless interchange between the MeNB and the SeNB to improve the performance of the dual connectivity.
  • FIG. 3 is a flowchart of this embodiment. As shown in FIG. 3, the method includes the following steps:
  • Step 100 The UE is in the dual connection of the Split bearer type, where eNB1 is the MeNB and eNB2 is the SeNB.
  • the MeNB initiates a SeNB Modification process (existing process) to modify the dual connection of the Split bearer type to a dual connection of the MCG/SCG bearer type.
  • Step 101 The UE is in the dual connection of the MCG/SCG bearer type, where eNB1 is the MeNB and eNB2 is the SeNB.
  • the eNB1 knows that the signal that the UE detects the eNB1 becomes weaker and weaker, and the signal of the eNB2 is better, and the eNB1 decides to trigger the identity exchange of the MeNB and the SeNB of the UE.
  • the eNB1 sends a HANDOVER REQUEST message to the eNB2, carrying the MeNB and SeNB identity interchange indication.
  • Step 102 eNB2 receives a HANDOVER REQUEST message, which is carried according to the message.
  • There is an MeNB and SeNB identity interchange indication which is determined to be a special handover request, the purpose of which is to complete the MeNB and SeNB identity exchange of the UE.
  • the eNB2 agrees to the request, keeps the original bearer of the UE in the eNB2 unchanged, and returns a HANDOVER REQUEST ACKNOWLEDGE message to the eNB1.
  • Step 103 The eNB1 receives the HANDOVER REQUEST ACKNOWLEDGE message, and knows that the eNB2 has agreed to the MeNB and SeNB identity exchange of the UE.
  • the eNB1 sends an RRC Connection Reconfiguration message to the UE, carrying the MeNB and SeNB identity interchange indication.
  • Step 104 The UE receives the RRC Connection Reconfiguration message, and according to the MeNB and the SeNB identity interchange indication, the message is determined to be a special reconfiguration request, and the purpose is to complete the MeNB and SeNB identity exchange of the UE.
  • the UE performs MeNB and SeNB identity exchange on the UE side (including but not limited to: switching the control plane connection of the Uu interface between the UE and the eNB1 to between the UE and the eNB2).
  • Step 105 The UE sends an RRC Connection Reconfiguration Complete message to the eNB2.
  • Step 106 After receiving the RRC Connection Reconfiguration Complete message, the eNB2 sends a PATH SWITCH REQUEST message to the MME, carrying the MeNB and SeNB identity interchange indication.
  • Step 107 The MME receives the PATH SWITCH REQUEST message, and according to the MeNB and the SeNB identity interchange indication, the message is determined to be a special path switch request, and the purpose is to complete the MeNB and SeNB identity exchange of the UE.
  • the MME performs the MeNB and SeNB identity exchange on the network side (including but not limited to: the S1 interface control plane connection of the UE is switched between the MME and the eNB1 to the MME and the eNB2).
  • Step 108 The MME sends a PATH SWITCH REQUEST ACKNOWLEDGE message to the eNB2.
  • the UE is still in the dual connection of the MCG/SCG bearer type, eNB2 is the MeNB, and eNB1 is the SeNB.
  • FIG. 4 is a flowchart of this embodiment. As shown in FIG. 4, the method includes the following steps:
  • Step 201 The UE is in the dual connection of the MCG/SCG bearer type, where eNB1 is the MeNB and eNB2 is the SeNB. According to the measurement report reported by the UE, the eNB1 knows that the signal that the UE detects the eNB1 becomes weaker and weaker, and the signal of the eNB2 is better, and the eNB1 decides to trigger the identity exchange of the MeNB and the SeNB of the UE.
  • the eNB1 sends an MeNB and SeNB identity exchange request message to the eNB2, carrying the Old eNB UE X2AP ID (X2 interface application protocol identifier (ID) of the UE on the old eNB side) (eNB UE X2AP ID of the UE on the eNB1 side), Old MME UE S1AP ID (S1 interface application protocol ID of the UE on the old MME side) (MME UE S1AP ID of the UE on the MME side corresponding to eNB1).
  • ID X2 interface application protocol identifier
  • MME UE S1AP ID S1 interface application protocol ID of the UE on the old MME side
  • Step 202 The eNB2 receives the MeNB and the SeNB identity exchange request message, and the purpose of the message is to complete the MeNB and SeNB identity exchange of the UE.
  • the eNB2 agrees to the request, keeps the original bearer of the UE in the eNB2 unchanged, and returns an MeNB and SeNB identity exchange request acknowledgement message to the eNB1, carrying the Old eNB UE X2AP ID (the eNB UE X2AP ID of the UE on the eNB1 side).
  • Step 203 The eNB1 receives the MeNB and the SeNB identity exchange request acknowledgement message, and knows that the eNB2 has agreed to the MeNB and the SeNB identity exchange of the UE.
  • the eNB1 sends an RRC Connection Reconfiguration message to the UE, carrying the MeNB and SeNB identity interchange indication.
  • Step 204 The UE receives the RRC Connection Reconfiguration message, and according to the MeNB and the SeNB identity interchange indication, the message is determined to be a special reconfiguration request, and the purpose is to complete the MeNB and SeNB identity exchange of the UE.
  • the UE performs MeNB and SeNB identity exchange on the UE side (including but not limited to: switching the control plane connection of the Uu interface between the UE and the eNB1 to between the UE and the eNB2).
  • Step 205 The UE sends an RRC Connection Reconfiguration Complete message to the eNB2.
  • Step 206 After receiving the RRC Connection Reconfiguration Complete message, the eNB2 sends the MeNB and the SeNB path switching request message to the MME, and carries the eNB UE S1AP ID (eNB UE S1AP ID of the UE on the eNB2 side) and the Old MME UE S1AP ID (the corresponding eNB1). MME UE S1AP ID of the UE on the MME side).
  • Step 207 The MME receives the MeNB and the SeNB path switch request message, and the purpose of the message is to complete the MeNB and SeNB identity exchange of the UE.
  • the MME performs the MeNB and SeNB identity exchange on the network side (including but not limited to: the S1 interface control plane connection of the UE is switched between the MME and the eNB1 to the MME and the eNB2).
  • Step 208 The MME sends an MeNB and a SeNB path switching request acknowledgement message to the eNB2, and carries the MME UE S1AP ID (the MME UE S1AP ID of the MME side corresponding to the eNB2) and the eNB UE S1AP ID (the eNB UE S1AP ID of the UE on the eNB2 side) ).
  • eNB2 is the MeNB
  • eNB1 is the SeNB.
  • FIG. 5 is a schematic diagram of a device for dual connectivity operation according to an embodiment of the present invention.
  • the UE in the dual connectivity of the primary/secondary cell group bearer type is applied to the primary base station.
  • the base station in this embodiment includes :
  • the first sending module 51 is configured to send a primary base station and a secondary base station identity exchange request message to the secondary base station;
  • the receiving module 52 is configured to receive an acknowledgement message of the secondary base station
  • the second sending module 53 is configured to: after the receiving module receives the acknowledgement message of the secondary base station, send a radio resource control protocol connection reconfiguration message to the UE, where the radio resource control protocol connection reconfiguration message carries the primary base station and Sub-base station identity interchange indication information.
  • the primary base station and the secondary base station identity exchange request message are a handover request message, and the handover request message carries a primary base station and a secondary base station identity exchange indication information, where the acknowledgement message is a handover request acknowledgement message; or
  • the primary base station and the secondary base station identity exchange request message are preset identity exchange request messages, and the preset identity exchange request message carries the X2 interface application protocol identifier of the UE on the primary base station side and the primary base station corresponding to The S1 interface of the UE on the mobile management entity side applies the protocol identifier, and the acknowledgement message is a preset identity exchange request acknowledgement message.
  • FIG. 6 is a schematic diagram of a device for dual connectivity operation according to an embodiment of the present invention.
  • the UE in this embodiment is in a dual connectivity of a primary/secondary cell group bearer type, and is applied to the UE, including:
  • the receiving module 61 is configured to receive a RRC connection reconfiguration message, where the RRC connection reconfiguration message carries the primary base station and the secondary base station identity interchange indication information;
  • the processing module 62 is configured to perform identity switching processing between the primary base station and the secondary base station;
  • the sending module 63 is configured to send a RRC connection reconfiguration complete message to the secondary base station before the identity exchange.
  • the processing module 62 performs a primary base station and a secondary base station identity exchange process, including: switching a control plane connection of the interface between the UE and the cell, and converting the UE and the primary base station to the UE and the secondary base station. The connection between the two.
  • FIG. 7 is a schematic diagram of a device for dual connectivity operation according to an embodiment of the present invention.
  • the UE in the dual connectivity of the primary/secondary cell group bearer type is applied to the secondary base station.
  • the base station in this embodiment includes :
  • the receiving module 71 is configured to receive a radio resource control protocol connection reconfiguration complete message of the UE;
  • the sending module 72 is configured to send a path switch request message to the mobility management entity, where the path switch request message carries the primary base station and the secondary base station identity interchange indication information.
  • the secondary base station refers to the secondary base station before the identity exchange, and after the receiving module receives the RRC connection reconfiguration complete message of the UE, the secondary base station performs identity exchange processing.
  • FIG. 8 is a schematic diagram 4 of the apparatus for dual connection operation according to an embodiment of the present invention, as shown in FIG.
  • the MME of the embodiment is applied to the MME for the UE in the dual connectivity of the primary/secondary cell group bearer type, including:
  • the receiving module 81 is configured to receive a path switching request message of the secondary base station, where the path switching request message carries the primary base station and the secondary base station identity interchange indication information;
  • the processing module 82 is configured to perform identity switching processing between the primary base station and the secondary base station;
  • the sending module 83 is configured to send an acknowledgement message to the secondary base station before the identity exchange.
  • the processing module 82 includes: converting an S1 interface control plane connection of the UE by the mobility management entity and the primary base station to the mobility management entity, and the Inter-base station.
  • each unit in the above device may be implemented by a Central Processing Unit (CPU), a Micro Processor Unit (MPU), or a digital signal processor located in the device. (Digital Signal Processor, DSP), or Field Programmable Gate Array (FPGA) implementation.
  • CPU Central Processing Unit
  • MPU Micro Processor Unit
  • DSP Digital Signal Processor
  • FPGA Field Programmable Gate Array
  • the apparatus for tracking the service signaling may also be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a separate product.
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions.
  • a computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • program codes such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • an embodiment of the present invention further provides a computer storage medium in which a computer program is stored, the computer program being configured to perform the dual connectivity operation of the embodiment of the present invention.

Abstract

本申请公开了一种双连接操作的方法及装置、计算机存储介质，所述方法包括：主基站向次基站发送主基站和次基站身份互换请求消息；所述主基站接收到所述次基站的确认消息后，向UE发送无线资源控制协议连接重配置消息，所述无线资源控制协议连接重配置消息携带主基站和次基站身份互换指示信息。

Description

一种双连接操作的方法及装置、计算机存储介质 技术领域
本申请涉及但不限于通信技术领域，尤指一种双连接操作的方法及装置、计算机存储介质。
背景技术
长期演进(Long Term Evolution，简称LTE)网络包括演进的通用陆地无线接入网(Evolved Universal Terrestrial Radio Access Network，简称E-UTRAN)及对应的核心网(Core Network，简称CN)。E-UTRAN包括演进基站(evolved Node B，简称eNB)。CN包括移动管理实体(Mobile Management Entity，简称MME)和服务网关(Serving Gateway，简称S-GW)等。eNB和CN之间通过S1接口连接，eNB之间可通过X2接口连接。一个eNB可以管理一个或多个小区(Cell)。用户设备(User Equipment，简称UE)与小区之间的接口称为Uu口(或称空口)。
由于频谱资源的匮乏，以及移动用户的大流量业务的激增，采用高频点如3.5GHz进行热点覆盖的需求日益明显。高频点的信号衰减比较厉害，小区的覆盖范围比较小，采用低功率小小区(Small Cell)的基站成为新的应用场景。为了增强Small Cell部署网络的移动性能及增加用户吞吐量，引入了一种新的增强方案称作双连接(Dual Connectivity，简称DC)。双连接下终端可以同时与两个基站保持连接，其中一个基站称为主基站(Master eNB，简称MeNB)，另一个基站称为次基站(Secondary eNB，简称SeNB)。双连接下MeNB负责双连接的控制。数据流有2种实现方式：分叉承载(Split bearer)方式和主/次小区组承载(Master/Secondary Cell Group bearer，简称MCG/SCG bearer)方式。采用Split bearer时(如图1所示)，下行数据由 S-GW流向MeNB，在MeNB分叉，一股直接流向UE，另一股经SeNB流向UE。采用MCG/SCG bearer时(如图2所示)，下行数据从S-GW发出两股数据，一股经MeNB流向UE，另一股经SeNB流向UE。
目前相关技术无法实现双连接时MeNB和SeNB的无损互换。
发明内容
本发明实施例提供一种双连接操作的方法及装置、计算机存储介质，以实现UE在进行双连接操作时，做到MeNB和SeNB的无损互换。
一种双连接操作的方法，包括：
主基站向次基站发送主基站和次基站身份互换请求消息；
所述主基站接收到所述次基站的确认消息后，向UE发送无线资源控制协议连接重配置消息，所述无线资源控制协议连接重配置消息携带主基站和次基站身份互换指示信息。
在一实施方式中，所述主基站和次基站身份互换请求消息为切换请求消息，所述切换请求消息携带主基站和次基站身份互换指示信息，所述确认消息为切换请求确认消息；或者
所述主基站和次基站身份互换请求消息为预设的身份互换请求消息，所述预设的身份互换请求消息携带主基站侧的所述UE的X2接口应用协议标识以及主基站对应的移动管理实体侧的所述UE的S1接口应用协议标识，所述确认消息为预设的身份互换请求确认消息。
一种双连接操作的装置，应用于主基站，包括，
第一发送模块，配置为向次基站发送主基站和次基站身份互换请求消息；
接收模块，配置为接收所述次基站的确认消息；
第二发送模块，配置为在所述接收模块接收到所述次基站的确认消息后，向UE发送无线资源控制协议连接重配置消息，所述无线资源控制协议 连接重配置消息携带主基站和次基站身份互换指示信息。
在一实施方式中，所述主基站和次基站身份互换请求消息为切换请求消息，所述切换请求消息携带主基站和次基站身份互换指示信息，所述确认消息为切换请求确认消息；或者
所述主基站和次基站身份互换请求消息为预设的身份互换请求消息，所述预设的身份互换请求消息携带主基站侧的所述UE的X2接口应用协议标识以及主基站对应的移动管理实体侧的所述UE的S1接口应用协议标识，所述确认消息为预设的身份互换请求确认消息。
一种双连接操作的方法，包括：
UE接收无线资源控制协议连接重配置消息，所述无线资源控制协议连接重配置消息携带主基站和次基站身份互换指示信息；
所述UE进行主基站和次基站身份互换处理；
所述UE向身份互换前的次基站发送无线资源控制协议连接重配置完成消息。
在一实施方式中，所述UE进行主基站和次基站身份互换处理，包括：
将所述UE与小区之间的接口的控制面连接由所述UE与主基站间转换到所述UE与次基站间的连接。
一种双连接操作的装置，应用于UE，包括：
接收模块，配置为接收无线资源控制协议连接重配置消息，所述无线资源控制协议连接重配置消息携带主基站和次基站身份互换指示信息；
处理模块，配置为进行主基站和次基站身份互换处理；
发送模块，配置为向身份互换前的次基站发送无线资源控制协议连接重配置完成消息。
在一实施方式中，所述处理模块，进行主基站和次基站身份互换处理包括：将所述UE与小区之间的接口的控制面连接由所述UE与主基站间转 换到所述UE与次基站间的连接。
一种双连接操作的方法，包括：
次基站接收UE的无线资源控制协议连接重配置完成消息；
所述次基站向移动管理实体发送路径转换请求消息，所述路径转换请求消息携带主基站和次基站身份互换指示信息。
在一实施方式中，所述次基站是指身份互换前的次基站，当所述次基站接收UE的无线资源控制协议连接重配置完成消息后，进行身份互换处理。
一种双连接操作的装置，应用于次基站，包括，
接收模块，配置为接收UE的无线资源控制协议连接重配置完成消息；
发送模块，配置为向移动管理实体发送路径转换请求消息，所述路径转换请求消息携带主基站和次基站身份互换指示信息。
在一实施方式中，所述次基站是指身份互换前的次基站，当所述接收模块接收UE的无线资源控制协议连接重配置完成消息后，所述次基站进行身份互换处理。
一种双连接操作的方法，包括：
移动管理实体接收次基站的路径转换请求消息，所述路径转换请求消息携带主基站和次基站身份互换指示信息；
所述移动管理实体进行主基站和次基站身份互换处理；
所述移动管理实体向身份互换前的次基站发送确认消息。
在一实施方式中，所述移动管理实体进行主基站和次基站身份互换处理，包括：
将所述UE的S1接口控制面连接由所述移动管理实体与主基站间转换到所述移动管理实体与所述次基站间。
在一实施方式中，所述确认消息为路径切换请求确认消息，或
所述确认消息为预设的路径转换请求确认消息，所述预设的路径转换请求确认消息携带所述主基站对应的移动管理实体侧的所述UE的S1接口应用协议标识和所述次基站侧的所述UE的S1接口应用协议标识。
一种双连接操作的装置，应用于移动管理实体，包括：
接收模块，配置为接收次基站的路径转换请求消息，所述路径转换请求消息携带主基站和次基站身份互换指示信息；
处理模块，配置为进行主基站和次基站身份互换处理；
发送模块，配置为向身份互换前的次基站发送确认消息。
在一实施方式中，所述处理模块，进行主基站和次基站身份互换处理包括：将所述UE的S1接口控制面连接由所述移动管理实体与主基站间转换到所述移动管理实体与所述次基站间。
另一方面，本发明实施例还提供一种计算机存储介质，该计算机存储介质存储有计算机程序，该计算机程序配置为执行上述双连接操作的方法。
综上，本发明实施例提供一种双连接操作的方法及装置、计算机存储介质，使UE在进行双连接操作时，能够做到MeNB和SeNB的无损互换。
附图说明
图1是相关技术的Split bearer示意图；
图2是相关技术的MCG/SCG bearer示意图；
图3是本发明实施例1的流程图；
图4是本发明实施例2的流程图；
图5为本发明实施例的双连接操作的装置的示意图一；
图6为本发明实施例的双连接操作的装置的示意图二；
图7为本发明实施例的双连接操作的装置的示意图三；
图8为本发明实施例的双连接操作的装置的示意图四。
具体实施方式
当MeNB的信号变得越来越弱，而SeNB的信号比较好的时候，如果能将MeNB和SeNB的身份互换，将有助于提高双连接的性能。因为MeNB负责双连接的控制，如果UE与MeNB失去连接对UE的影响比较大，而能及时地进行MeNB和SeNB的身份互换，UE只会失去与SeNB的连接，这对UE的影响将比较小。
因此，如何实现双连接时MeNB和SeNB的无损互换是本申请所要解决的技术问题。
为使本申请的目的、技术方案和优点更加清楚明白，下文中将结合附图对本申请的实施例进行详细说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
本实施例提供的一种双连接操作的方法，针对处于主/次小区组承载MCG/SCG bearer类型的双连接中的UE，包括：
MeNB向SeNB发起MeNB和SeNB身份互换请求(可通过在现有的HANDOVER REQUEST消息中携带MeNB和SeNB身份互换指示或采用新的MeNB和SeNB身份互换请求消息)。
MeNB收到SeNB的确认消息(现有的HANDOVER REQUEST ACKNOWLEDGE消息或新的MeNB和SeNB身份互换请求确认消息)后，MeNB向UE发送RRC Connection Reconfiguration消息，携带MeNB和SeNB身份互换指示。
UE收到携带MeNB和SeNB身份互换指示的RRC Connection Reconfiguration消息后，进行UE侧的MeNB和SeNB身份互换(包括但不限于：将Uu口的控制面连接由UE与eNB1间转换到UE与eNB2间)，并向SeNB发送RRC Connection Reconfiguration Complete消息。
SeNB收到RRC Connection Reconfiguration Complete消息后，向MME 发起路径转换请求(可通过在现有的PATH SWITCH REQUEST消息中携带MeNB和SeNB身份互换指示或采用新的MeNB和SeNB路径转换请求消息)。
MME收到SeNB的路径转换请求后，进行网络侧的MeNB和SeNB身份互换(包括但不限于：将UE的S1接口控制面连接由MME与eNB1间转换到MME与eNB2间)，并向SeNB发送确认消息(现有的PATH SWITCH REQUEST ACKNOWLEDGE消息或新的MeNB和SeNB路径转换请求确认消息)。
针对处于Split bearer类型的双连接中的UE，MeNB先发起SeNB Modification过程，将Split bearer类型的双连接修改为MCG/SCG bearer类型的双连接，然后MeNB再向SeNB发起MeNB和SeNB身份互换请求。
采用本发明实施例所述的方法，UE在进行双连接操作时，能够做到MeNB和SeNB的无损互换，以提高双连接的性能。
以下以两个实施例对本申请的方法进行详细的说明。
实施例1
图3是本实施例的流程图，如图3所示，包括如下步骤：
步骤100、UE处于Split bearer类型的双连接中，eNB1为MeNB，eNB2为SeNB。MeNB发起SeNB Modification(修改)过程(现有过程)，将Split bearer类型的双连接修改为MCG/SCG bearer类型的双连接。
步骤101、UE处于MCG/SCG bearer类型的双连接中，eNB1为MeNB，eNB2为SeNB。根据UE上报的测量报告，eNB1了解到UE测到eNB1的信号变得越来越弱，而eNB2的信号比较好，eNB1决定触发UE的MeNB和SeNB的身份互换。eNB1向eNB2发送HANDOVER REQUEST(切换请求)消息，携带MeNB和SeNB身份互换指示。
步骤102、eNB2收到HANDOVER REQUEST消息，根据消息中携带 有MeNB和SeNB身份互换指示，确定这是一个特殊的切换请求，其目的是为了完成UE的MeNB和SeNB身份互换。eNB2同意该请求，保持UE在eNB2中的原有承载不变，向eNB1回HANDOVER REQUEST ACKNOWLEDGE(切换请求确认)消息。
步骤103、eNB1收到HANDOVER REQUEST ACKNOWLEDGE消息，知道eNB2已同意UE的MeNB和SeNB身份互换。eNB1向UE发送RRC Connection Reconfiguration消息，携带MeNB和SeNB身份互换指示。
步骤104、UE收到RRC Connection Reconfiguration消息，根据消息中携带有MeNB和SeNB身份互换指示，确定这是一个特殊的重配置请求，其目的是为了完成UE的MeNB和SeNB身份互换。UE进行UE侧的MeNB和SeNB身份互换(包括但不限于：将Uu口的控制面连接由UE与eNB1间转换到UE与eNB2间)。
步骤105、UE向eNB2发送RRC Connection Reconfiguration Complete(RRC连接重配置完成)消息。
步骤106、eNB2收到RRC Connection Reconfiguration Complete消息后，向MME发送PATH SWITCH REQUEST(路径切换请求)消息，携带MeNB和SeNB身份互换指示。
步骤107、MME收到PATH SWITCH REQUEST消息，根据消息中携带有MeNB和SeNB身份互换指示，确定这是一个特殊的路径转换请求，其目的是为了完成UE的MeNB和SeNB身份互换。MME进行网络侧的MeNB和SeNB身份互换(包括但不限于：将UE的S1接口控制面连接由MME与eNB1间转换到MME与eNB2间)。
步骤108、MME向eNB2发送PATH SWITCH REQUEST ACKNOWLEDGE(路径切换请求确认)消息。UE仍处于MCG/SCG bearer类型的双连接中，eNB2为MeNB，eNB1为SeNB。
实施例2
图4是本实施例的流程图，如图4所示，包括如下步骤：
步骤201、UE处于MCG/SCG bearer类型的双连接中，eNB1为MeNB，eNB2为SeNB。根据UE上报的测量报告，eNB1了解到UE测到eNB1的信号变得越来越弱，而eNB2的信号比较好，eNB1决定触发UE的MeNB和SeNB的身份互换。eNB1向eNB2发送MeNB和SeNB身份互换请求消息，携带Old eNB UE X2AP ID(旧eNB侧的UE的X2接口应用协议标识(ID))(eNB1侧的UE的eNB UE X2AP ID)、Old MME UE S1AP ID(旧MME侧的UE的S1接口应用协议ID)(eNB1对应的MME侧的UE的MME UE S1AP ID)。
步骤202、eNB2收到MeNB和SeNB身份互换请求消息，了解该消息的目的是为了完成UE的MeNB和SeNB身份互换。eNB2同意该请求，保持UE在eNB2中的原有承载不变，向eNB1回MeNB和SeNB身份互换请求确认消息，携带Old eNB UE X2AP ID(eNB1侧的UE的eNB UE X2AP ID)。
步骤203、eNB1收到MeNB和SeNB身份互换请求确认消息，知道eNB2已同意UE的MeNB和SeNB身份互换。eNB1向UE发送RRC Connection Reconfiguration消息，携带MeNB和SeNB身份互换指示。
步骤204、UE收到RRC Connection Reconfiguration消息，根据消息中携带有MeNB和SeNB身份互换指示，确定这是一个特殊的重配置请求，其目的是为了完成UE的MeNB和SeNB身份互换。UE进行UE侧的MeNB和SeNB身份互换(包括但不限于：将Uu口的控制面连接由UE与eNB1间转换到UE与eNB2间)。
步骤205、UE向eNB2发送RRC Connection Reconfiguration Complete消息。
步骤206、eNB2收到RRC Connection Reconfiguration Complete消息后，向MME发送MeNB和SeNB路径转换请求消息，携带eNB UE S1AP ID(eNB2侧的UE的eNB UE S1AP ID)、Old MME UE S1AP ID(eNB1对应的MME侧的UE的MME UE S1AP ID)。
步骤207、MME收到MeNB和SeNB路径转换请求消息，了解该消息的目的是为了完成UE的MeNB和SeNB身份互换。MME进行网络侧的MeNB和SeNB身份互换(包括但不限于：将UE的S1接口控制面连接由MME与eNB1间转换到MME与eNB2间)。
步骤208、MME向eNB2发送MeNB和SeNB路径转换请求确认消息，携带MME UE S1AP ID(eNB2对应的MME侧的UE的MME UE S1AP ID)、eNB UE S1AP ID(eNB2侧的UE的eNB UE S1AP ID)。
之后，UE仍处于MCG/SCG bearer类型的双连接中，eNB2为MeNB，eNB1为SeNB。
图5为本发明实施例的双连接操作的装置的示意图一，针对处于主/次小区组承载类型的双连接中的UE，应用于主基站，如图5所示，本实施例的基站包括：
第一发送模块51，配置为向次基站发送主基站和次基站身份互换请求消息；
接收模块52，配置为接收所述次基站的确认消息；
第二发送模块53，配置为在所述接收模块接收到所述次基站的确认消息后，向UE发送无线资源控制协议连接重配置消息，所述无线资源控制协议连接重配置消息携带主基站和次基站身份互换指示信息。
其中，所述主基站和次基站身份互换请求消息为切换请求消息，所述切换请求消息携带主基站和次基站身份互换指示信息，所述确认消息为切换请求确认消息；或者
所述主基站和次基站身份互换请求消息为预设的身份互换请求消息，所述预设的身份互换请求消息携带主基站侧的所述UE的X2接口应用协议标识以及主基站对应的移动管理实体侧的所述UE的S1接口应用协议标识，所述确认消息为预设的身份互换请求确认消息。
图6为本发明实施例的双连接操作的装置的示意图二，如图6所示，本实施例的UE处于主/次小区组承载类型的双连接中，应用于UE，包括：
接收模块61，配置为接收无线资源控制协议连接重配置消息，所述无线资源控制协议连接重配置消息携带主基站和次基站身份互换指示信息；
处理模块62，配置为进行主基站和次基站身份互换处理；
发送模块63，配置为向身份互换前的次基站发送无线资源控制协议连接重配置完成消息。
其中，所述处理模块62，进行主基站和次基站身份互换处理包括：将所述UE与小区之间的接口的控制面连接由所述UE与主基站间转换到所述UE与次基站间的连接。
图7为本发明实施例的双连接操作的装置的示意图三，针对处于主/次小区组承载类型的双连接中的UE，应用于次基站，如图7所示，本实施例的基站包括：
接收模块71，配置为接收所述UE的无线资源控制协议连接重配置完成消息；
发送模块72，配置为向移动管理实体发送路径转换请求消息，所述路径转换请求消息携带主基站和次基站身份互换指示信息。
这里，所述次基站是指身份互换前的次基站，当所述接收模块接收UE的无线资源控制协议连接重配置完成消息后，所述次基站进行身份互换处理。
图8为本发明实施例的双连接操作的装置的示意图四，如图8所示， 本实施例的MME针对处于主/次小区组承载类型的双连接中的UE应用于MME，包括：
接收模块81，配置为接收次基站的路径转换请求消息，所述路径转换请求消息携带主基站和次基站身份互换指示信息；
处理模块82，配置为进行主基站和次基站身份互换处理；
发送模块83，配置为向身份互换前的次基站发送确认消息。
其中，所述处理模块82，进行主基站和次基站身份互换处理包括：将所述UE的S1接口控制面连接由所述移动管理实体与主基站间转换到所述移动管理实体与所述次基站间。
在实际应用中，上述装置中的各个单元所实现的功能，均可由位于装置中的中央处理器(Central Processing Unit，CPU)、或微处理器(Micro Processor Unit，MPU)、或数字信号处理器(Digital Signal Processor，DSP)、或现场可编程门阵列(Field Programmable Gate Array，FPGA)等实现。
本发明实施例上述业务信令跟踪的装置如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机、服务器、或者网络设备等)执行本发明各个实施例所述方法的全部或部分。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read Only Memory)、磁碟或者光盘等各种可以存储程序代码的介质。这样，本发明实施例不限制于任何特定的硬件和软件结合。
相应地，本发明实施例还提供一种计算机存储介质，其中存储有计算机程序，该计算机程序配置为执行本发明实施例的双连接操作的方法。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程 序来指令相关硬件完成，所述程序可以存储于计算机可读存储介质中，如只读存储器、磁盘或光盘等。可选地，上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现。相应地，上述实施例中的各模块/单元可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。本发明不限制于任何特定形式的硬件和软件的结合。
以上仅为本发明的优选实施例，当然，本发明还可有其他多种实施例，在不背离本发明精神及其实质的情况下，熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形，但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。

Claims (21)

  1. 一种双连接操作的方法，包括：
    主基站向次基站发送主基站和次基站身份互换请求消息；
    所述主基站接收到所述次基站的确认消息后，向用户设备UE发送无线资源控制协议连接重配置消息，所述无线资源控制协议连接重配置消息携带主基站和次基站身份互换指示信息。
  2. 如权利要求1所述的方法，其中，
    所述主基站和次基站身份互换请求消息为切换请求消息，所述切换请求消息携带主基站和次基站身份互换指示信息，所述确认消息为切换请求确认消息；或者
    所述主基站和次基站身份互换请求消息为预设的身份互换请求消息，所述预设的身份互换请求消息携带主基站侧的所述UE的X2接口应用协议标识以及主基站对应的移动管理实体侧的所述UE的S1接口应用协议标识，所述确认消息为预设的身份互换请求确认消息。
  3. 一种双连接操作的装置，应用于主基站，包括，
    第一发送模块，配置为向次基站发送主基站和次基站身份互换请求消息；
    接收模块，配置为接收所述次基站的确认消息；
    第二发送模块，配置为在所述接收模块接收到所述次基站的确认消息后，向UE发送无线资源控制协议连接重配置消息，所述无线资源控制协议连接重配置消息携带主基站和次基站身份互换指示信息。
  4. 如权利要求3所述的装置，其中，
    所述主基站和次基站身份互换请求消息为切换请求消息，所述切换请求消息携带主基站和次基站身份互换指示信息，所述确认消息为切换请求确认消息；或者
    所述主基站和次基站身份互换请求消息为预设的身份互换请求消息，所述预设的身份互换请求消息携带主基站侧的所述UE的X2接口应用协议标识以及主基站对应的移动管理实体侧的所述UE的S1接口应用协议标识，所述确认消息为预设的身份互换请求确认消息。
  5. 一种双连接操作的方法，包括：
    UE接收无线资源控制协议连接重配置消息，所述无线资源控制协议连接重配置消息携带主基站和次基站身份互换指示信息；
    所述UE进行主基站和次基站身份互换处理；
    所述UE向身份互换前的次基站发送无线资源控制协议连接重配置完成消息。
  6. 如权利要求5所述的方法，其中，所述UE进行主基站和次基站身份互换处理，包括：
    将所述UE与小区之间的接口的控制面连接由所述UE与主基站间转换到所述UE与次基站间的连接。
  7. 一种双连接操作的装置，应用于UE，包括：
    接收模块，配置为接收无线资源控制协议连接重配置消息，所述无线资源控制协议连接重配置消息携带主基站和次基站身份互换指示信息；
    处理模块，配置为进行主基站和次基站身份互换处理；
    发送模块，配置为向身份互换前的次基站发送无线资源控制协议连接重配置完成消息。
  8. 如权利要求7所述的装置，其中，
    所述处理模块，进行主基站和次基站身份互换处理包括：将所述UE与小区之间的接口的控制面连接由所述UE与主基站间转换到所述UE与次基站间的连接。
  9. 一种双连接操作的方法，包括：
    次基站接收UE的无线资源控制协议连接重配置完成消息；
    所述次基站向移动管理实体发送路径转换请求消息，所述路径转换请求消息携带主基站和次基站身份互换指示信息。
  10. 根据权利要求9所述的方法，其中，所述次基站是指身份互换前的次基站，当所述次基站接收UE的无线资源控制协议连接重配置完成消息后，进行身份互换处理。
  11. 一种双连接操作的装置，应用于次基站，包括，
    接收模块，配置为接收UE的无线资源控制协议连接重配置完成消息；
    发送模块，配置为向移动管理实体发送路径转换请求消息，所述路径转换请求消息携带主基站和次基站身份互换指示信息。
  12. 根据权利要求11所述的装置，其中，所述次基站是指身份互换前的次基站，当所述接收模块接收UE的无线资源控制协议连接重配置完成消息后，所述次基站进行身份互换处理。
  13. 一种双连接操作的方法，包括：
    移动管理实体接收次基站的路径转换请求消息，所述路径转换请求消息携带主基站和次基站身份互换指示信息；
    所述移动管理实体进行主基站和次基站身份互换处理；
    所述移动管理实体向身份互换前的次基站发送确认消息。
  14. 如权利要求13所述的方法，其中，所述移动管理实体进行主基站和次基站身份互换处理，包括：
    将所述UE的S1接口控制面连接由所述移动管理实体与主基站间转换到所述移动管理实体与所述次基站间。
  15. 如权利要求13或14所述的方法，其中，
    所述确认消息为路径切换请求确认消息，或
    所述确认消息为预设的路径转换请求确认消息，所述预设的路径转换 请求确认消息携带所述主基站对应的移动管理实体侧的所述UE的S1接口应用协议标识和所述次基站侧的所述UE的S1接口应用协议标识。
  16. 一种双连接操作的装置，应用于移动管理实体，包括：
    接收模块，配置为接收次基站的路径转换请求消息，所述路径转换请求消息携带主基站和次基站身份互换指示信息；
    处理模块，配置为进行主基站和次基站身份互换处理；
    发送模块，配置为向身份互换前的次基站发送确认消息。
  17. 如权利要求16所述的装置，其中，
    所述处理模块，进行主基站和次基站身份互换处理包括：将所述UE的S1接口控制面连接由所述移动管理实体与主基站间转换到所述移动管理实体与所述次基站间。
  18. 一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，该计算机可执行指令配置为执行权利要求1-2任一项所述的双连接操作的方法。
  19. 一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，该计算机可执行指令配置为执行权利要求5-6任一项所述的双连接操作的方法。
  20. 一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，该计算机可执行指令配置为执行权利要求9-10任一项所述的双连接操作的方法。
  21. 一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，该计算机可执行指令配置为执行权利要求13-15任一项所述的双连接操作的方法。
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