WO2016145979A1 - 一种数据转发方法、移动锚点及计算机存储介质 - Google Patents

一种数据转发方法、移动锚点及计算机存储介质 Download PDF

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Publication number
WO2016145979A1
WO2016145979A1 PCT/CN2016/074661 CN2016074661W WO2016145979A1 WO 2016145979 A1 WO2016145979 A1 WO 2016145979A1 CN 2016074661 W CN2016074661 W CN 2016074661W WO 2016145979 A1 WO2016145979 A1 WO 2016145979A1
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senb
menb
bearer
protocol information
tunneling protocol
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PCT/CN2016/074661
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English (en)
French (fr)
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吴蕴璐
高音
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中兴通讯股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • 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 invention relates to the field of wireless communication technologies, and in particular, to a data forwarding method, a mobile anchor point, and a computer storage medium.
  • LTE Long Term Evolution
  • LPNs low power nodes
  • the LPN has the features of low-cost, low-power, and easy-to-deploy. It can include hotspot deployment and enhanced coverage. It can effectively increase the data rate of high-speed data services in indoor or outdoor hotspots, and improve remote areas or cell edge coverage.
  • the LPN may also be referred to as a small base station, which may include, but is not limited to, a home base station (HeNB), a pico base station (pico), a radio remote unit/head (RRU/RRH), and a relay node (RN).
  • HeNB home base station
  • pico pico base station
  • RRU/RRH radio remote unit/head
  • RN relay node
  • LPN cells may be overloaded due to being occupied by users, thereby affecting user data.
  • Throughput while other LPN cells or macro cells will be at a relatively low load level. If the load is to be balanced, the network side needs to perform load balancing operations, but the process is not flexible enough, especially when there are many cells. Negative sex Unevenness is even more serious.
  • FIG. 1 is a schematic diagram of a network architecture of a dual connectivity in the related art.
  • the primary node is referred to as a master base station (MeNB, Master eNB), and is generally referred to as a macro base station node, and other nodes are referred to as a controlled base station (SeNB, Secondary eNB), and generally refers to a micro base station or a low power node.
  • the UE maintains a connection with the macro cell and the LPN cell at the same time.
  • the network side can adjust the amount of data transmitted by the UE on the MeNB and the SeNB node in real time. Meanwhile, if the UE moves or other reasons cause the SeNB cell to change. Another cell can remain connected, and this change does not cause excessive signaling impact.
  • the MeNB is connected to the Mobility Management Entity (MME) through S1-C, and the MeNB and the SeNB are connected through X2-C.
  • MME Mobility Management Entity
  • the MeNB is connected to the Serving Gateway (S-GW) through the S1-U, and the SeNB does not participate in data transmission to the user plane.
  • S-GW Serving Gateway
  • the MeNB is connected to the S-GW through S1-U, and the MeNB is connected to the SeNB through X2-U.
  • the SeNB is connected to the S-GW through the S1-U, and the MeNB does not participate in data transmission to the user plane.
  • the general packet radio service (GPRS) tunneling protocol (GTP-U, GPRS Tunneling Protocol for the User Plane) is used from the core network.
  • GTP-U GPRS Tunneling Protocol for the User Plane
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • PHY Physical layer
  • the 3rd Generation Partnership Project has two user planes of offloading: one is 1A, and the UE directly connects to the bearer user plane on the MeNB and the SeNB.
  • the MeNB performs a shunt anchor point, and the data is shunted at the PDCP layer and the RLC layer, and sent to the MeNB and the SeNB for transmission, as shown in FIG. 4 .
  • the mobility anchor (MA) was used as a proxy for the S1 interface to reduce the large number of signaling attacks caused by the frequent handover of the UE to the core network.
  • the mobility anchor with the X2 interface proxy function can be used for both control plane aggregation and user plane aggregation, that is, control plane signaling and user plane data. Both are forwarded by moving anchor points.
  • the mobility anchor with the X2 interface proxy function is aggregated as the user plane, it is necessary to open the data transmission or the forward transmission channel through the mobility anchor with the X2 data plane proxy function, so that the user plane data passes through the MeNB or the SeNB.
  • the mobility anchor is sent to the SeNB or MeNB of the opposite end.
  • the embodiment of the invention provides a data forwarding method, a mobile anchor point and a computer storage medium, which can open a channel for data transmission or pre-transmission through a mobile anchor node having an X2 data plane proxy function, so that user plane data is moved from the MeNB or the SeNB.
  • the anchor is sent to the SeNB or MeNB of the opposite end.
  • An embodiment of the present invention provides a data forwarding method, where the method includes:
  • the mobile anchor point When there is an interaction message between the MeNB and the SeNB, the mobile anchor point is divided.
  • the GPRS tunneling protocol information is allocated, and the allocated GPRS tunneling protocol information is notified to the MeNB or the SeNB;
  • the mobility anchor point is a mobility anchor point established between the MeNB and the SeNB.
  • the GPRS tunneling protocol information allocated by the mobility anchor is notified to the MeNB or the SeNB, including:
  • the mobility anchor point carries the GPRS tunneling protocol information allocated by the mobile anchor point of the downlink data carried by the MeNB and the GPRS tunneling protocol information allocated by the mobile anchor end of the bearer uplink data to the MeNB. Notifying the MeNB;
  • the mobility anchor point transmits the GPRS tunneling protocol information allocated by the mobile anchor point of the downlink data carried by the SeNB and the mobile anchor point forwarded by the uplink data of the bearer to the SeNB. Notifying the SeNB of the GPRS tunneling protocol information;
  • the mobility anchor point that the mobile anchor point carries the downlink data forwarded by the mobile anchor point for the SeNB and the mobile anchor point of the uplink data carried forwarded by the bearer The GPRS tunneling protocol information allocated by the terminal for the SeNB is notified to the SeNB; for the accepted bearer addition, the mobile anchor point forwards the GPRS tunneling protocol information allocated by the mobile anchor point of the downlink data carried by the mobility anchor to the MeNB and the uplink data pre-transmission movement of the bearer
  • the anchor end notifies the MeNB of the GPRS tunneling protocol information allocated by the MeNB.
  • the mobility anchor notifies the MeNB or the SeNB of the allocated tunneling protocol information, including:
  • the mobility anchor point notifies the SeNB of the GPRS tunneling protocol information allocated by the mobility anchor point to the SeNB, and notifies the MeNB of the GPRS tunneling protocol information allocated by the mobility anchor end for the MeNB;
  • the mobility anchor notifies the mobility anchor end of the downlink data carried by the bearer to the GPRS tunnel protocol information allocated by the SeNB.
  • SeNB
  • the mobility anchor for adding or modifying a bearer, notifies the mobile anchor point of the bearer to the SeNB for the GPRS tunneling protocol information allocated by the SeNB; for deleting the bearer, the mobile The anchor point notifies the mobile anchor point forwarded by the downlink data carried by the downlink data to the SeNB for the GPRS tunneling protocol information allocated by the SeNB, and adds or accepts the bearer modification to the bearer, and the mobile anchor point carries the mobile anchor point to the GPRS allocated by the MeNB.
  • the tunneling protocol information is notified to the MeNB.
  • the mobility anchor when the interaction message of the MeNB and the SeNB is not encapsulated in the X2 transmission message, the mobility anchor notifies the MeNB or the SeNB of the allocated GPRS tunneling protocol information, including:
  • the mobility anchor adds the allocated GPRS tunneling protocol information to the interaction message of the MeNB and the SeNB, and notifies the SeNB or the MeNB.
  • the mobility anchor when the interaction message of the MeNB and the SeNB is encapsulated in the X2 transmission message, the mobility anchor notifies the MeNB or the SeNB of the allocated GPRS tunneling protocol information, including:
  • the mobility anchor adds the allocated GPRS tunneling protocol information to the MeNB and the SeNB independent of the X2 transmission message, and notifies the SeNB or the MeNB;
  • the mobility anchor encapsulates the allocated GPRS tunneling protocol information in an interaction message in the X2 transmission message, and notifies the SeNB or the MeNB.
  • the GPRS tunneling protocol information includes a transport layer address and a tunnel endpoint identifier.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the data forwarding method according to the embodiment of the present invention.
  • the embodiment of the present invention further provides a mobility anchor point, where the mobility anchor point is established between the MeNB and the SeNB, where the mobility anchor point includes an allocation module and a notification module;
  • the allocation module is configured to have an interaction message between the MeNB and the SeNB after moving the anchor Point, the mobile anchor point allocates GPRS tunneling protocol information;
  • the notification module is configured to notify the MeNB or the SeNB of the GPRS tunneling protocol information allocated by the allocation module.
  • the notification module includes a first notification submodule
  • the first notification sub-module is configured to allocate the GPRS tunneling protocol information allocated by the mobile anchor point of the downlink data carried by the bearer to the MeNB and the mobile anchor point of the uplink data carried by the bearer in the SeNB.
  • the GPRS tunneling protocol information is notified to the MeNB;
  • the first notification sub-module is further configured to: in the initial SeNB release process of the MeNB, transmit the GPRS tunnel protocol information allocated by the mobile anchor point of the downlink data carried by the bearer to the SeNB and the mobile anchor end of the uplink data carried by the bearer. Notifying the SeNB of the GPRS tunneling protocol information allocated by the SeNB;
  • the first notification sub-module is further configured to: in the initial SeNB modification preparation process of the MeNB, for the release bearer, transmit the GPRS tunnel protocol information and the uplink data of the bearer allocated by the mobile anchor point forwarded by the downlink data carried by the downlink data to the SeNB.
  • the mobile anchor end is notified to the SeNB for the GPRS tunneling protocol information allocated by the SeNB; for the bearer to be added, the mobile anchor point forwarded by the mobile node that carries the downlink data carried forward is the GPRS tunneling protocol information allocated to the MeNB and the mobile anchor of the uplink data carried forwarded by the bearer
  • the point end notifies the MeNB of the GPRS tunneling protocol information allocated for the MeNB.
  • the notification module includes a second notification submodule
  • the second notification sub-module is configured to notify the SeNB of the GPRS tunneling protocol information allocated by the bearer mobile anchor point to the SeNB during the SeNB addition preparation process, and allocate the GPRS tunneling protocol allocated by the mobility anchor end to the MeNB. Information is notified to the MeNB;
  • the second notification submodule is further configured to be in the initial SeNB release process of the MeNB, And transmitting, by the mobile anchor point forwarded by the downlink data, the GPRS tunneling protocol information allocated by the SeNB to the SeNB;
  • the second notification sub-module is further configured to, in the initial SeNB modification preparation process of the MeNB, notify the mobile anchor point of the GPRS tunneling protocol information allocated by the mobile anchor point to the SeNB for adding or modifying the bearer.
  • SeNB for deleting the bearer, the mobility anchor notifies the mobile anchor point of the downlink data carried by the bearer to the SeNB for the GPRS tunneling protocol information allocated by the SeNB; and for the bearer to be added or accepted, the mobility anchor will carry The mobility anchor is notified to the MeNB for the GPRS tunneling protocol information allocated by the MeNB.
  • the notification module is configured to add the allocated GPRS tunneling protocol information to the interaction message of the MeNB and the SeNB, and notify the SeNB or the MeNB when the interaction message of the MeNB and the SeNB is not encapsulated in the X2 transmission message.
  • the notification module is further configured to: when the interaction message of the MeNB and the SeNB is encapsulated in the X2 transmission message, add the allocated GPRS tunneling protocol information to the interaction message of the MeNB and the SeNB that are independent of the X2 transmission message, and notify Or the SeNB or the MeNB; or, the GPRS tunneling protocol information is encapsulated in an interaction message in the X2 transmission message, and notified to the SeNB or the MeNB.
  • a data forwarding method and a mobility anchor provided by an embodiment of the present invention, when an interaction message between a MeNB and an SeNB passes through a mobility anchor, the mobility anchor allocates GPRS tunnel protocol information, and allocates tunnel protocol information.
  • the tunneling protocol information is notified to the MeNB or the SeNB; the mobility anchor is a mobility anchor established between the MeNB and the SeNB.
  • the mobile anchor point with the X2 interface proxy function is used as the user plane aggregation, the data transmission or the pre-transmission channel of the mobile anchor point with the X2 data plane proxy function can be effectively opened, so that the user plane data is obtained.
  • the MeNB or the SeNB sends the SeNB or the MeNB to the opposite end through the mobility anchor point.
  • FIG. 1 is a schematic diagram of a network architecture of a dual connectivity in the related art
  • FIG. 2 is a schematic diagram of a user plane data protocol stack of LTE
  • FIG. 3 is a schematic diagram of a user plane 1A in a dual connectivity architecture
  • FIG. 4 is a schematic diagram of a user plane 3C in a dual connectivity architecture
  • FIG. 5 is a schematic diagram of a network structure of a dual connectivity according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of an implementation process of a data forwarding method according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart 1 of an implementation process of a data forwarding method according to an application example of the present invention.
  • FIG. 8 is a second schematic diagram of an implementation process of a data forwarding method according to an application example of the present invention.
  • FIG. 9 is a schematic flowchart 3 of an implementation flow of a data forwarding method according to an application example of the present invention.
  • FIG. 10 is a schematic flowchart 4 of an implementation flow of a data forwarding method according to an application example of the present invention.
  • FIG. 11 is a schematic flowchart 5 of an implementation process of a data forwarding method according to an application example of the present invention.
  • FIG. 12 is a schematic flowchart 6 of an implementation flow of a data forwarding method according to an application example of the present invention.
  • FIG. 13 is a schematic structural diagram of a structure of a mobile anchor point according to an embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of a structure of a notification module according to an embodiment of the present invention.
  • the mobility anchor point when an interaction message between the MeNB and the SeNB passes through the mobility anchor point, the mobility anchor point can allocate the GPRS tunnel protocol information in time, and notify the MeNB or the SeNB of the allocated GPRS tunneling protocol information.
  • the GPRS tunneling protocol information may be simply referred to as GTP information.
  • the GTP information includes a transport layer address and a tunnel endpoint identifier (TEID).
  • FIG. 6 is a schematic flowchart of an implementation process of a data forwarding method according to an embodiment of the present invention, as shown in FIG.
  • the data forwarding method in the embodiment of the present invention includes:
  • Steps S101 to S102 When an interaction message between the MeNB and the SeNB passes through the mobility anchor point, the mobility anchor allocates GPRS tunnel protocol information, and notifies the MeNB or the SeNB of the allocated GPRS tunnel protocol information.
  • the GPRS tunneling protocol information includes a transport layer address and a tunnel endpoint identifier.
  • the mobility anchor notifies the MeNB or the SeNB of the allocated GPRS tunneling protocol information, including:
  • the mobility anchor point carries the GPRS tunneling protocol information allocated by the mobile anchor point of the downlink data carried by the MeNB and the GPRS tunneling protocol information allocated by the mobile anchor end of the bearer uplink data to the MeNB. Notifying the MeNB;
  • the mobility anchor point transmits the GPRS tunneling protocol information allocated by the mobile anchor point of the downlink data carried by the SeNB and the mobile anchor point forwarded by the uplink data of the bearer to the SeNB. Notifying the SeNB of the GPRS tunneling protocol information;
  • the mobility anchor point that the mobile anchor point carries the downlink data forwarded by the mobile anchor point for the SeNB and the mobile anchor point of the uplink data carried forwarded by the bearer The GPRS tunneling protocol information allocated by the terminal for the SeNB is notified to the SeNB; for the accepted bearer addition, the mobile anchor point forwards the GPRS tunneling protocol information allocated by the mobile anchor point of the downlink data carried by the mobility anchor to the MeNB and the uplink data pre-transmission movement of the bearer
  • the anchor end notifies the MeNB of the GPRS tunneling protocol information allocated by the MeNB.
  • the mobility anchor notifies the MeNB or the SeNB of the allocated GPRS tunneling protocol information, including:
  • the mobility anchor In the SeNB adding preparation process, the mobility anchor notifies the mobile anchor point end of the GPRS tunneling protocol information allocated by the SeNB to the SeNB, and moves the anchor point to the MeNB.
  • the allocated GPRS tunneling protocol information is notified to the MeNB;
  • the mobility anchor informs the SeNB of the GPRS tunneling protocol information allocated by the SeNB for the downlink anchor preamble of the downlink data carried by the bearer;
  • the mobility anchor for adding or modifying a bearer, notifies the mobile anchor point of the bearer to the SeNB for the GPRS tunneling protocol information allocated by the SeNB; for deleting the bearer, the mobile The anchor point notifies the mobile anchor point forwarded by the downlink data carried by the downlink data to the SeNB for the GPRS tunneling protocol information allocated by the SeNB, and adds or accepts the bearer modification to the bearer, and the mobile anchor point carries the mobile anchor point to the GPRS allocated by the MeNB.
  • the tunneling protocol information is notified to the MeNB.
  • the mobility anchor notifies the MeNB or the SeNB of the allocated GPRS tunneling protocol information, including:
  • the mobility anchor When the interaction message of the MeNB and the SeNB is not encapsulated in the X2 transmission message, the mobility anchor adds the allocated GPRS tunneling protocol information to the interaction message of the MeNB and the SeNB, and notifies the SeNB or the MeNB;
  • the mobility anchor may add the allocated GPRS tunneling protocol information to the interaction message of the MeNB and the SeNB independent of the X2 transmission message, and notify the SeNB or the MeNB; or The mobility anchor may also encapsulate the allocated tunneling protocol information in an interaction message in the X2 transmission message, and notify the SeNB or the MeNB.
  • the session can be effectively opened.
  • the data transmission or the forward transmission channel of the mobility anchor of the X2 data plane proxy function so that the user plane data is sent from the MeNB or the SeNB to the SeNB or the MeNB of the opposite end through the mobility anchor point.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the data forwarding method according to the embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of an implementation of a data forwarding method according to an application example of the present invention.
  • the application example takes an SCG bearer as an example, and relates to an SeNB adding preparation process in a dual connectivity architecture, and the process is a MeNB and a SeNB.
  • the interactive message is encapsulated in the case of X2 transmitting a message.
  • the data forwarding method includes the following steps:
  • Step 201 The MeNB sends an X2 MESSAGE TRANSFER message to the mobility anchor, where the X2 transmission message is encapsulated with a SeNB ADDITION REQUEST message.
  • the MeNB encapsulates the SeNB addition request message into the X2 transmission message, and adds the identifier of the source MeNB and the identifier of the target SeNB as the routing information in the X2 transmission message; after that, the MeNB encapsulates the X2 transmission message with the SeNB addition request message. Send to the mobile anchor.
  • the SeNB addition request message includes a MeNB X2AP ID, a UE Security Capabilities, a SeNB Security Key, and a UE aggregate maximum data in the SeNB that are uniquely identified on the X2 interface in the MeNB.
  • the bearer information includes a bearer identifier, a quality of service (QoS) parameter of the bearer, and GTP information of the bearer S-GW.
  • the GTP information includes a transport layer address and a tunnel endpoint identifier (TEID).
  • Step 202 The mobility anchor forwards the X2 transport message encapsulated with the SeNB add request message to the target SeNB.
  • the mobility anchor forwards the X2 transport message encapsulated with the SeNB add request message to the target SeNB according to the target SeNB identifier carried in the X2 transport message.
  • Step 203 The SeNB sends an X2 transmission message to the mobility anchor, where the X2 transmission message is encapsulated. SeNB ADDITION ACKNOWLEDGE message is installed;
  • the SeNB encapsulates the SeNB addition confirmation message into the X2 transmission message, and carries the identifier of the source SeNB and the identifier of the target MeNB as the routing information in the X2 transmission message; after that, the SeNB encapsulates the X2 transmission message with the SeNB adding the acknowledgement message. Send to the mobile anchor.
  • the SeNB addition confirmation message includes the MeNB X2AP ID of the MeNB that uniquely identifies the UE on the X2 interface, the SeNB X2AP ID that uniquely identifies the UE on the X2 interface in the SeNB, the bearer identifier, the GTP information of the SeNB end of the bearer, and the downlink data of the bearer.
  • the GTP information of the pre-transmitted SeNB end and the GTP information of the SeNB end forwarded by the carried uplink data.
  • the GTP information includes a transport layer address and a tunnel endpoint identifier.
  • Step 204 The mobility anchor forwards the X2 transport message encapsulating the X2 transport message of the SeNB adding the acknowledgement message to the target MeNB.
  • the mobility anchor forwards the X2 transport message encapsulated with the SeNB add acknowledgement message to the target MeNB according to the target MeNB identifier carried in the X2 transport message.
  • the mobility anchor point may further include, in the X2 transmission message, the GTP information allocated by the mobility anchor end of the carried data pre-transmission to the MeNB, and specifically includes the mobile anchor point of the downlink data preamble of the bearer for the MeNB.
  • the mobility anchor point may also include the GTP information allocated by the mobility anchor end of the bearer data transmission to the MeNB in the SeNB addition request message, and specifically includes the GTP information and the bearer allocated by the mobility anchor end of the bearer downlink data to the MeNB.
  • the upstream anchor data carries the GTP information allocated by the mobile anchor end for the MeNB.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the data forwarding method according to the embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an implementation process of a data forwarding method according to an application example of the present invention.
  • the application example takes a split bearer as an example, and relates to an SeNB adding preparation process in a dual connectivity architecture, where the process is MeNB and SeNB.
  • the interactive message is not encapsulated in the case of X2 transmitting a message.
  • the data forwarding method includes the following steps:
  • Step 301 The MeNB sends an SeNB add request message to the mobility anchor point.
  • the SeNB addition request message is not encapsulated in the X2 transmission message, but is directly sent to the mobility anchor through the MeNB, and the SeNB addition request message includes the identifier of the source MeNB and the identifier of the target SeNB.
  • the SeNB Add Request message includes the MeNB X2AP ID, bearer information, and the like in the MeNB that uniquely identify the UE on the X2 interface.
  • the bearer information includes a bearer identifier, a QoS parameter of the bearer, and GTP information of the MeNB end that is carried.
  • Step 302 The mobility anchor sends an SeNB addition request message to the target SeNB according to the identifier of the target SeNB in the received SeNB addition request message.
  • the mobility anchor may add the GTP information allocated by the mobility anchor point for the SeNB in the SeNB addition request message; after that, the mobility anchor adds the SeNB according to the identifier of the target SeNB in the received SeNB addition request message. The message is sent to the target SeNB.
  • Step 303 The SeNB sends an SeNB add confirmation message to the mobility anchor point.
  • the SeNB addition confirmation message is not encapsulated in the X2 transmission message, but is directly sent to the mobility anchor through the SeNB, and the SeNB addition confirmation message includes the identifier of the source SeNB and the identifier of the target MeNB.
  • the SeNB adds an acknowledgment message, including the MeNB X2AP ID of the MeNB that uniquely identifies the UE on the X2 interface, the SeNB X2AP ID of the SeNB that uniquely identifies the UE on the X2 interface, and the GTP information of the SeNB end of the bearer.
  • Step 304 The mobility anchor sends an SeNB addition confirmation message to the target MeNB according to the identifier of the target MeNB in the received SeNB addition confirmation message.
  • the mobility anchor may add the GTP information allocated by the mobile anchor point to the MeNB in the SeNB addition confirmation message; after that, the mobility anchor adds according to the received SeNB.
  • the identity of the target MeNB in the acknowledgement message sends an SeNB Add Confirmation message to the target MeNB.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the data forwarding method according to the embodiment of the present invention.
  • FIG. 9 is a schematic flowchart of an implementation process of a data forwarding method according to an application example of the present invention.
  • the application example takes an SCG bearer as an example, and relates to an initial SeNB release process of a MeNB in a dual connectivity architecture, and the process is a MeNB and
  • the SeNB's interactive message is encapsulated in the case of X2 transmitting a message.
  • the data forwarding method includes the following steps:
  • Step 401 The MeNB sends an X2 transmission message to the mobility anchor, where the X2 transmission message is encapsulated with a SeNB Release Request (SENB RELEASE REQUEST) message.
  • SeNB Release Request SENB RELEASE REQUEST
  • the MeNB encapsulates the SeNB release request message into the X2 transport message, and adds the identifier of the source MeNB and the identifier of the target SeNB as the routing information in the X2 transport message; after that, the MeNB encapsulates the X2 transport message encapsulated with the SeNB release request message. Send to the mobile anchor.
  • the SeNB release request message includes the MeNB X2AP ID of the MeNB that uniquely identifies the UE on the X2 interface, the SeNB X2AP ID of the SeNB that uniquely identifies the UE on the X2 interface, the GTP information of the MeNB end of the downlink data carried by the bearer, and the uplink of the bearer. GTP information of the MeNB side forwarded by the data.
  • Step 402 The mobility anchor forwards the X2 transport message encapsulated with the SeNB release request message to the target SeNB.
  • the mobility anchor sends the X2 transmission message encapsulated with the SeNB release request message to the target SeNB according to the target SeNB identifier carried in the X2 transmission message.
  • the mobility anchor may further include, in the X2 transmission message, the GTP information allocated by the mobile anchor end of the data pre-transmission carried by the mobile anchor point, and specifically includes the mobile anchor point of the downlink data preamble of the bearer allocated to the SeNB.
  • GTP information bearer uplink data pre-transfer
  • the GTP information that is allocated to the SeNB by the mobile anchor point; or the mobility anchor point may also include the GTP information allocated by the mobility anchor end of the data pre-transmitted by the mobile anchor point for the SeNB in the SeNB release request message, specifically including the downlink data pre-transmission movement of the bearer.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the data forwarding method according to the embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an implementation process of a data forwarding method according to an application example of the present invention.
  • the application example takes a split bearer as an example, and relates to an initial SeNB release process of a MeNB in a dual connectivity architecture, and the process is a MeNB and The SeNB's interactive message is not encapsulated in the X2 transmission message.
  • the data forwarding method includes the following steps:
  • Step 501 The MeNB sends an SeNB release request message to the mobility anchor point.
  • the SeNB release request message is not encapsulated in the X2 transport message, but is directly sent to the mobility anchor through the MeNB, and the SeNB release request message includes the identifier of the source MeNB and the identifier of the target SeNB.
  • the SeNB release request message includes the MeNB X2AP ID of the MeNB that uniquely identifies the UE on the X2 interface, the SeNB X2AP ID of the SeNB that uniquely identifies the UE on the X2 interface, and the GTP information of the MeNB end of the downlink data transmitted by the bearer.
  • Step 502 The mobility anchor sends an SeNB add request message to the target SeNB according to the identifier of the target SeNB in the received release request message.
  • the mobility anchor may add, in the SeNB release request message, the GTP information allocated by the mobility anchor end of the downlink data carried by the bearer to the SeNB; and then, the mobility anchor according to the identifier of the target SeNB in the received SeNB release request message.
  • the SeNB release request message is sent to the target SeNB.
  • An embodiment of the present invention further provides a computer storage medium, where the computer storage medium is stored Computer executable instructions are stored for performing the data forwarding method of the embodiments of the present invention.
  • FIG. 11 is a schematic flowchart of an implementation of a data forwarding method according to an application example of the present invention.
  • the application example takes a split bearer as an example, and relates to an initial SeNB modification process of a MeNB in a dual connectivity architecture, and the process is an MeNB and The SeNB's interactive message is not encapsulated in the X2 transmission message.
  • the data forwarding method includes the following steps:
  • Step 601 The MeNB sends a SeNB MODIFICATION REQUEST message to the mobility anchor point.
  • the SeNB modification request message is not encapsulated in the X2 transmission message, but is directly sent to the mobility anchor through the MeNB, and the SeNB modification request message includes the identifier of the source MeNB and the identifier of the target SeNB.
  • the SeNB modification request message includes the MeNB X2AP ID that uniquely identifies the UE on the X2 interface in the MeNB, the SeNB X2AP ID that uniquely identifies the UE on the X2 interface in the SeNB, the SCG change indication, the UE security capability, the SeNB security key, and the SeNB.
  • the UE aggregates the maximum data rate and bearer related information and the like.
  • the bearer-related information includes the added bearer information, the modified bearer information, and the deleted bearer information.
  • the bearer information is added, including the bearer identifier, the QoS parameter of the bearer, and the GTP information of the S-GW that is carried.
  • the modified bearer information includes the bearer identifier, the QoS parameter of the bearer, and the GTP information of the S-GW that is carried.
  • the bearer release information includes the bearer identifier, the GTP information of the MeNB end forwarded by the downlink data carried by the bearer, and the GTP information of the MeNB end forwarded by the carried uplink data.
  • Step 602 The mobility anchor sends a SeNB modification request message to the target SeNB according to the identifier of the target SeNB in the received SeNB modification request message.
  • the mobility anchor may add the GTP information allocated by the mobility anchor end to the SeNB and the GTP information allocated by the mobility anchor end of the bearer uplink data to the SeNB in the SeNB modification request message; Mobile anchor according to the received SeNB The identity of the target SeNB in the modification request message sends a SeNB modification request message to the target SeNB.
  • Step 603 The SeNB sends a SeNB MODIFICATION REQUEST ACKNOWLEDGE message to the mobility anchor point.
  • the SeNB modification request acknowledgement message is not encapsulated in the X2 transmission message, but is directly sent to the mobility anchor through the MeNB, and the SeNB modification request acknowledgement message includes the identifier of the source SeNB and the identifier of the target MeNB.
  • the SeNB modification request acknowledgement message includes the MeNB X2AP ID that uniquely identifies the UE on the X2 interface in the MeNB, and the SeNB X2AP ID and the bearer-related information that uniquely identifies the UE on the X2 interface in the SeNB.
  • the bearer-related information includes accepting the information added by the bearer, accepting the information of the bearer modification, and receiving the information of the bearer release.
  • the information about the bearer added includes the bearer identifier, the GTP information of the SeNB carried by the bearer, the GTP information of the SeNB end of the downlink data carried by the bearer, and the GTP information of the SeNB end of the bearer uplink data.
  • the information that accepts the bearer modification includes the bearer identifier and the GTP information of the bearer SeNB.
  • the information that accepts the bearer deletion includes the bearer identifier.
  • Step 604 The mobility anchor sends a SeNB modification request acknowledgement message to the target MeNB according to the identifier of the target MeNB in the received SeNB modification request acknowledgement message.
  • the mobility anchor may add the GTP information allocated by the mobility anchor end to the MeNB and the GTP information allocated by the mobility anchor end of the bearer uplink data to the MeNB in the SeNB modification request acknowledgement message;
  • the mobility anchor sends a SeNB modification request acknowledgement message to the target MeNB according to the identifier of the target MeNB in the received SeNB modification request acknowledgement message.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the data forwarding method according to the embodiment of the present invention.
  • FIG. 12 is a schematic flowchart of an implementation of a data forwarding method according to an application example of the present invention.
  • the application example takes a split bearer as an example, and relates to an initial SeNB modification preparation process of a MeNB in a dual connectivity architecture, and the process is a MeNB.
  • the interaction message with the SeNB is encapsulated in the case of X2 transmission of the message.
  • the data forwarding method includes the following steps:
  • Step 701 The MeNB sends an X2 transmission message to the mobility anchor, where the X2 transmission message is encapsulated with a SeNB modification request message.
  • the MeNB encapsulates the SeNB modification request message into the X2 transmission message, and adds the identifier of the source MeNB and the identifier of the target SeNB as the routing information in the X2 transmission message; after that, the MeNB encapsulates the X2 transmission message with the SeNB modification request message. Send to the mobile anchor.
  • the SeNB modification request message includes the MeNB X2AP ID of the MeNB that uniquely identifies the UE on the X2 interface, the SeNB X2AP ID that uniquely identifies the UE on the X2 interface, the SCG change indication, and the bearer-related information.
  • the bearer related information includes adding bearer information, modifying bearer information, and deleting bearer information.
  • the bearer information is added, including the bearer identifier, the QoS parameter of the bearer, and the GTP information of the MeNB end.
  • the modified bearer information includes a bearer identifier, a QoS parameter of the bearer, and GTP information of the MeNB end.
  • the release bearer information includes the bearer identifier and the GTP information of the MeNB end forwarded by the downlink data of the bearer.
  • Step 702 The mobility anchor forwards the X2 transport message encapsulated with the SeNB modification request message to the target SeNB.
  • the mobility anchor sends the X2 transmission message encapsulated with the SeNB modification request message to the target SeNB according to the target SeNB identifier carried in the X2 transmission message.
  • the mobility anchor may also include adding bearer information, modifying bearer information, and deleting bearer information in the X2 transmission message.
  • the adding bearer information and the modified bearer information include the GTP information allocated by the mobile anchor point of the bearer for the SeNB, and the deletion bearer information includes the GTP information allocated by the mobile anchor end of the bearer downlink data to the SeNB.
  • the mobility anchor may in turn include the carried mobility anchor in the added bearer information of the SeNB modification request message.
  • the GTP information allocated by the point end for the SeNB, the modified bearer information of the SeNB modification request message includes the GTP information allocated by the bearer mobile anchor point for the SeNB, and the downlink bearer data of the SeNB modification request message includes the downlink data of the bearer.
  • the mobile anchor end allocates GTP information for the SeNB.
  • Step 703 The SeNB sends an X2 transmission message to the mobility anchor, where the X2 transmission message is encapsulated with a modification request acknowledgement message.
  • the SeNB encapsulates the SeNB modification request acknowledgement message into the X2 transport message, and carries the identifier of the source SeNB and the identifier of the target MeNB as the routing information in the X2 transport message; after that, the SeNB transmits the X2 transport encapsulated with the modify request acknowledgement message.
  • the message is sent to the mobility anchor.
  • the SeNB modification request acknowledgement message includes the MeNB X2AP ID that uniquely identifies the UE on the X2 interface in the MeNB, the SeNB X2AP ID that uniquely identifies the UE on the X2 interface in the SeNB, and bearer-related information.
  • the bearer-related information includes accepting the information added by the bearer, accepting the information of the bearer modification, and receiving the information of the bearer release.
  • the information about the bearer added includes the bearer identifier and the GTP information of the bearer SeNB.
  • the information that accepts the bearer modification includes the bearer identifier and the GTP information of the bearer SeNB.
  • the information that accepts the bearer deletion includes the bearer identifier.
  • Step 704 The mobility anchor forwards the X2 transport message encapsulated with the SeNB Modify Request Acknowledgement message to the target MeNB.
  • the mobility anchor forwards the X2 transport message encapsulated with the SeNB modification request acknowledgement message to the target MeNB according to the target MeNB identifier carried in the X2 transport message.
  • the mobility anchor may further include the information of accepting the bearer added and accepting the bearer modification information in the X2 transport message, accepting the information about the bearer added and accepting the bearer modification information, including the bearer mobile anchor point for the MeNB.
  • the allocated GTP information; or the mobility anchor may in turn include the GTP information allocated by the bearer mobile anchor for the MeNB in the information about the received bearer of the SeNB modification request acknowledgement message, and modify the information of the accepted bearer modification of the request acknowledgement message at the SeNB.
  • the GTP information allocated by the bearer's mobility anchor for the MeNB is included.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the data forwarding method according to the embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a mobility anchor point according to an embodiment of the present invention. As shown in FIG. 13, the mobility anchor point is established between an MeNB and an SeNB, and the mobility anchor point includes an allocation module 801 and a notification module 802.
  • the allocating module 801 is configured to: when the interaction message between the MeNB and the SeNB passes the mobility anchor point, the mobility anchor allocates GPRS tunnel protocol information;
  • the notification module 802 is configured to notify the MeNB or the SeNB of the GPRS tunneling protocol information allocated by the allocating module 801.
  • the notification module 802 is configured to: when the interaction message of the MeNB and the SeNB is not encapsulated in the X2 transmission message, add the allocated GPRS tunneling protocol information to the interaction message of the MeNB and the SeNB, and notify the SeNB or MeNB.
  • the notification module 802 is further configured to add the allocated GPRS tunneling protocol information to the interaction between the MeNB and the SeNB independent of the X2 transport message when the interaction message of the MeNB and the SeNB is encapsulated in the X2 transport message.
  • the SeNB or the MeNB is notified; or the allocated GPRS tunneling protocol information is encapsulated in the interaction message in the X2 transmission message, and notified to the SeNB or the MeNB.
  • the notification module 802 includes a first notification submodule 802a;
  • the first notification sub-module 802a is configured to transmit the GPRS tunneling protocol information of the mobile anchor point forwarded by the mobile node to the MeNB and the mobile anchor point of the carried uplink data to the MeNB during the SeNB addition preparation process.
  • the allocated GPRS tunneling protocol information is notified to the MeNB;
  • the first notification sub-module 802a is further configured to: in the initial SeNB release process of the MeNB, transmit the GPRS tunnel protocol information allocated by the mobile anchor point of the downlink data carried by the bearer to the SeNB and the mobile anchor point of the uplink data carried by the bearer.
  • the terminal notifies the SeNB of the GPRS tunneling protocol information allocated by the SeNB;
  • the first notification sub-module 802a is further configured to: during the initial SeNB modification preparation process of the MeNB, for the release bearer, the GPRS tunneling protocol information and the carried uplink data allocated by the mobile anchor point forwarded by the downlink data carried by the bearer to the SeNB
  • the mobile anchor point of the preamble is notified to the SeNB for the GPRS tunneling protocol information allocated by the SeNB; for the bearer addition, the mobile anchor point forwarded by the downlink data carried by the bearer transmits the GPRS tunneling protocol information allocated to the MeNB and the uplink of the carried uplink data.
  • the anchor end notifies the MeNB of the GPRS tunneling protocol information allocated by the MeNB.
  • the notification module 802 includes a second notification submodule 802b;
  • the second notification sub-module 802b is configured to notify the SeNB of the GPRS tunneling protocol information allocated by the bearer mobile anchor point to the SeNB during the SeNB addition preparation process, and allocate the GPRS tunnel allocated by the mobility anchor end to the MeNB.
  • the protocol information is notified to the MeNB;
  • the second notification sub-module 802b is further configured to, in the initial SeNB release process of the MeNB, notify the SeNB of the SeNB tunneling protocol information allocated by the SeNB by the mobile anchor point forwarded by the downlink data carried by the bearer;
  • the second notification sub-module 802b is further configured to notify the SeNB tunneling protocol information allocated by the mobile anchor point to the SeNB for the added bearer or the modified bearer during the initial SeNB modification preparation process of the MeNB.
  • the mobility anchor informs the SeNB of the SeNB tunneling protocol information allocated by the SeNB for the downlink anchor data carried by the downlink data; and the mobility anchor point will be added or accepted for the bearer modification.
  • the bearer mobile anchor point is notified to the MeNB for the SeNB tunneling protocol information allocated by the MeNB.
  • Each module in the mobility anchor point and the submodule included in each module of the embodiment of the present invention may be implemented by a processor in a mobile anchor point, or may be implemented by a specific logic circuit; for example, in practical applications.
  • CPU Central Processing Unit
  • MPU Micro Processor Unit
  • DSP Digital Signal Processor
  • Field Programmable Field Programmable located at the mobile anchor point.
  • Gate Array, FPGA field Programmable
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • the mobility anchor when an interaction message between the MeNB and the SeNB passes through the mobility anchor point, the mobility anchor allocates GPRS tunnel protocol information, and notifies the MeNB or the allocated tunnel protocol information tunneling protocol information.
  • SeNB the mobility anchor is a mobility anchor established between the MeNB and the SeNB.
  • the MeNB or the SeNB sends the SeNB or the MeNB to the opposite end through the mobility anchor point.

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Abstract

本发明实施例提供一种数据转发方法、移动锚点及计算机存储介质，所述方法包括：当主控基站(MeNB)和受控基站(SeNB)之间有交互消息经过移动锚点时，所述移动锚点分配通用分组无线业务(GPRS)隧道协议信息，并将分配的GPRS隧道协议信息通知给MeNB或SeNB；所述移动锚点为建立在MeNB和SeNB之间的移动锚点。

Description

一种数据转发方法、移动锚点及计算机存储介质 技术领域
本发明涉及无线通信技术领域，尤其涉及一种数据转发方法、移动锚点及计算机存储介质。
背景技术
随着无线通信技术和标准的不断演进，移动分组业务得到巨大发展，用户设备(UE，User Equipment)或称终端的数据吞吐能力不断提升。以长期演进(LTE，Long Term Evolution)系统为例，在20M带宽内可以支持下行最大速率100Mbps的数据传输，后续的增强型LTE网络中，数据的传输速率将进一步提升，甚至可以达到1Gbps。
为了满足数据业务量的增长需求，以及业务在地域上不平均的特点，运营商在部署新一代通信网络(如LTE)的过程中，也在增加低功率节点(LPN，Low Power Node)。LPN具有低成本、低功率以及方便部署等特点，通常可以包括热点部署和增强覆盖两种部署场景，能够有效地提高室内或室外热点区域高速率数据业务的数据速率，改善边远地区或小区边缘覆盖。通常LPN也可称为小基站，其可以包括但不限于：家庭基站(HeNB)、微微基站(pico)、射频拉远单元/头(RRU/RRH)、中继节点(RN)。
然而，随着LPN小区的增加，网络部署环境变得更加复杂，同时也带来一些问题。首先，因为LPN小区的覆盖范围相比于宏小区(Macro Cell)要小得多，容量也相对较小，某些LPN小区可能会因被用户占满而导致负荷过高，从而影响用户数据的吞吐量，而另外一些LPN小区或宏小区会处在相对较低的负荷水平上，如果要平衡负荷，需要网络侧执行负荷均衡操作，但该过程不够灵活，尤其当小区较多时，这种灵活性的缺乏导致的负 荷不均就更严重。另外，由于LPN小区数量比较多，因此UE在网络内发生移动时，会导致频繁的小区间切换(Handover)，从而导致频繁的数据业务中断甚至是掉话等问题，这也会导致用户的数据吞吐量和用户体验的下降。同时，这种频繁的切换也会导致终端与网络，尤其是核心网会收到大量的信令冲击，从而可能导致系统资源拥塞甚至瘫痪。
目前，为了解决上述问题，不少公司和运营商都倾向于寻求一种新的增强方案，双连接(DC，Dual Connectivity)就是其中之一。在双连接的网络架构下，UE可以同时与两个或两个以上(本文所述双连接只是一个泛称，并不限制连接个数)网络节点保持连接。图1是相关技术中双连接的网络架构示意图。其中，主节点称为主控基站(MeNB，Master eNB)，一般指宏基站节点，而其他节点称为受控基站(SeNB，Secondary eNB)，一般指微基站或低功率节点。这样，UE同时与宏小区和LPN小区保持连接，在网络负荷不均衡时，网络侧可以实时调控UE在MeNB和SeNB节点上的传输数据量；同时，如果UE移动或其他原因导致SeNB小区变更时，另外一个小区还可以保持连接，且这种变更不会导致过多的信令冲击。
如图1所示，对于每一个UE来说，在控制面上，MeNB通过S1-C连接到移动管理实体(MME，Mobility Management Entity)，MeNB和SeNB之间通过X2-C连接。在用户面上，对于MCG承载，MeNB通过S1-U连接到服务网关(S-GW，Serving Gateway)，SeNB不参加到用户面的数据传输。对于split承载，MeNB通过S1-U连接到S-GW，MeNB通过X2-U连接到SeNB。对于SCG承载，SeNB通过S1-U连接到S-GW，MeNB不参加到用户面的数据传输。
另外，在如图2所示的LTE的用户面数据协议栈中，从核心网经用户层面通用分组无线业务(General Packet Radio Service，GPRS)隧道协议(GTP-U，GPRS Tunneling Protocol for the User Plane)收到的下行数据，经 解包后通过分组数据汇聚协议(PDCP，Packet Data Convergence Protocol)子层、无线链路控制(RLC，Radio Link Control)协议子层、媒体接入控制(MAC，Medium Access Control)协议子层和物理层(PHY)处理后发送给用户设备；上行数据的发送与下行数据正好相反。而且，第三代合作伙伴计划(3GPP，3rd Generation Partnership Project)在讨论Release 12双连接时，存在两种用户面的分流方式：一种是1A，UE在MeNB和SeNB上的承载用户面直接连接在S-GW上，如图3所示；另一种是3C，MeNB做分流锚点，数据在PDCP层与RLC层发生分流，分别发送给MeNB和SeNB进行传递，如图4所示。
基于上述理论，在之前3GPP对双连接架构的讨论中，采用移动锚点(MA，mobility anchor)作为一种S1接口的代理来减少由于UE频繁切换给核心网带来的大量的信令冲击。同样地，可以考虑在如图5所示的双连接架构中，将具备X2接口代理功能的移动锚点既做控制面汇聚，也做用户面汇聚，即控制面的信令和用户面的数据均通过移动锚点进行转发。然而，在将具备X2接口代理功能的移动锚点作为用户面汇聚时，有必要打通经过具有X2数据面代理功能的移动锚点的数据发送或者前传的通道，使得用户面数据从MeNB或者SeNB经过移动锚点发送到对端的SeNB或者MeNB。
发明内容
本发明实施例提供一种数据转发方法、移动锚点及计算机存储介质，能够打通经过具有X2数据面代理功能的移动锚点的数据发送或者前传的通道，使得用户面数据从MeNB或者SeNB经过移动锚点发送到对端的SeNB或者MeNB。
本发明实施例的技术方案是这样实现的：
本发明实施例提供一种数据转发方法，所述方法包括：
当MeNB和SeNB之间有交互消息经过移动锚点时，所述移动锚点分 配GPRS隧道协议信息，并将分配的GPRS隧道协议信息通知给MeNB或SeNB；所述移动锚点为建立在MeNB和SeNB之间的移动锚点。
上述方案中，在双连接SCG承载中，所述移动锚点分配的GPRS隧道协议信息通知给MeNB或SeNB，包括：
在SeNB添加准备过程中，所述移动锚点将承载的下行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB；
或者，在MeNB初始的SeNB释放过程中，所述移动锚点将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；
或者，在MeNB初始的SeNB修改准备过程中，对于释放承载，所述移动锚点将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于接受承载添加，所述移动锚点将承载的下行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB。
上述方案中，在双连接split承载中，所述移动锚点将分配的隧道协议信息通知给MeNB或SeNB，包括：
在SeNB添加准备过程中，所述移动锚点将承载的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB，将移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB；
或者，在MeNB初始的SeNB释放过程中，所述移动锚点将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给 SeNB；
或者，在MeNB初始的SeNB修改准备过程中，对于添加承载或修改承载，所述移动锚点将承载的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于删除承载，所述移动锚点将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于接受承载添加或接受承载修改，所述移动锚点将承载的移动锚点针对MeNB分配的GPRS隧道协议信息通知给MeNB。
上述方案中，当MeNB和SeNB的交互消息不是封装在X2传输消息时，所述移动锚点将分配的GPRS隧道协议信息通知给MeNB或SeNB，包括：
所述移动锚点将分配的GPRS隧道协议信息添加至MeNB和SeNB的交互消息中，通知给SeNB或MeNB。
上述方案中，当MeNB和SeNB的交互消息封装在X2传输消息时，所述移动锚点将分配的GPRS隧道协议信息通知给MeNB或SeNB，包括：
所述移动锚点将分配的GPRS隧道协议信息添加至独立于X2传输消息的MeNB和SeNB的交互消息中，通知给SeNB或MeNB；
或者，所述移动锚点将分配的GPRS隧道协议信息封装在X2传输消息中的交互消息中，通知给SeNB或者MeNB。
上述方案中，所述GPRS隧道协议信息包括传输层地址和隧道端点标识。
本发明实施例还提供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，所述计算机可执行指令用于执行本发明实施例所述数据转发方法。
本发明实施例还提供一种移动锚点，所述移动锚点建立在MeNB和SeNB之间，所述移动锚点包括分配模块和通知模块；
所述分配模块，配置为当MeNB和SeNB之间有交互消息经过移动锚 点时，所述移动锚点分配GPRS隧道协议信息；
所述通知模块，配置为将所述分配模块分配的GPRS隧道协议信息通知给MeNB或SeNB。
上述方案中，在双连接SCG承载中，所述通知模块包括第一通知子模块；其中，
所述第一通知子模块，配置为在SeNB添加准备过程中，将承载的下行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB；
所述第一通知子模块，还配置为在MeNB初始的SeNB释放过程中，将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；
所述第一通知子模块，还配置为在MeNB初始的SeNB修改准备过程中，对于释放承载，将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于接受承载添加，将承载的下行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB。
上述方案中，在双连接split承载中，所述通知模块包括第二通知子模块；其中，
所述第二通知子模块，配置为在SeNB添加准备过程中，将承载的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB，将所述移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB；
所述第二通知子模块，还配置为在MeNB初始的SeNB释放过程中， 将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；
所述第二通知子模块，还配置为在MeNB初始的SeNB修改准备过程中，对于添加承载或修改承载，所述移动锚点将承载的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于删除承载，所述移动锚点将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于接受承载添加或接受承载修改，所述移动锚点将承载的移动锚点针对MeNB分配的GPRS隧道协议信息通知给MeNB。
上述方案中，所述通知模块，配置为当MeNB和SeNB的交互消息不是封装在X2传输消息时，将分配的GPRS隧道协议信息添加至MeNB和SeNB的交互消息中，通知给SeNB或MeNB。
上述方案中，所述通知模块，还配置为当MeNB和SeNB的交互消息封装在X2传输消息时，将分配的GPRS隧道协议信息添加至独立于X2传输消息的MeNB和SeNB的交互消息中，通知给SeNB或MeNB；或者，将分配的GPRS隧道协议信息封装在X2传输消息中的交互消息中，通知给SeNB或者MeNB。
本发明实施例所提供的一种数据转发方法及移动锚点，当MeNB和SeNB之间有交互消息经过移动锚点时，所述移动锚点分配GPRS隧道协议信息，并将分配的隧道协议信息隧道协议信息通知给MeNB或SeNB；所述移动锚点为建立在MeNB和SeNB之间的移动锚点。如此，在双连接架构下，将具备X2接口代理功能的移动锚点作为用户面汇聚时，能够有效打通经过具有X2数据面代理功能的移动锚点的数据发送或者前传的通道，使得用户面数据从MeNB或者SeNB经过移动锚点发送到对端的SeNB或者MeNB。
附图说明
图1为相关技术中双连接的网络架构示意图；
图2为LTE的用户面数据协议栈示意图；
图3为双连接架构下用户面1A示意图；
图4为双连接架构下用户面3C示意图；
图5为本发明实施例双连接的网络架构示意图；
图6为本发明实施例数据转发方法的实现流程示意图；
图7为本发明一应用实例的数据转发方法的实现流程示意图一；
图8为本发明一应用实例的数据转发方法的实现流程示意图二；
图9为本发明一应用实例的数据转发方法的实现流程示意图三；
图10为本发明一应用实例的数据转发方法的实现流程示意图四；
图11为本发明一应用实例的数据转发方法的实现流程示意图五；
图12为本发明一应用实例的数据转发方法的实现流程示意图六；
图13为本发明实施例移动锚点的组成结构示意图；
图14为本发明实施例通知模块的组成结构示意图。
具体实施方式
在本发明实施例中，当MeNB和SeNB之间有交互消息经过移动锚点时，所述移动锚点能够及时分配GPRS隧道协议信息，并将分配的GPRS隧道协议信息通知给MeNB或SeNB。
这里，需要补充说明的是，所述GPRS隧道协议信息可以简称为GTP信息。其中，所述GTP信息包括传输层地址和隧道端点标识(TEID)。
下面结合附图及具体实施例对本发明再作进一步详细的说明。
实施例一
图6为本发明实施例数据转发方法的实现流程示意图，如图6所示， 本发明实施例数据转发方法包括：
步骤S101～S102：当MeNB和SeNB之间有交互消息经过移动锚点时，所述移动锚点分配GPRS隧道协议信息，并将分配的GPRS隧道协议信息通知给MeNB或SeNB。其中，所述GPRS隧道协议信息包括传输层地址和隧道端点标识。具体地，基于图5所示的双连接网络架构下，在双连接SCG承载中，所述移动锚点将分配的GPRS隧道协议信息通知给MeNB或SeNB，包括：
在SeNB添加准备过程中，所述移动锚点将承载的下行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB；
或者，在MeNB初始的SeNB释放过程中，所述移动锚点将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；
或者，在MeNB初始的SeNB修改准备过程中，对于释放承载，所述移动锚点将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于接受承载添加，所述移动锚点将承载的下行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB。
同样地，基于图5所示的双连接网络架构下，在双连接split承载中，所述移动锚点将分配的GPRS隧道协议信息通知给MeNB或SeNB，包括：
在SeNB添加准备过程中，所述移动锚点将承载的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB，将移动锚点端针对MeNB 分配的GPRS隧道协议信息通知给MeNB；
或者，在MeNB初始的SeNB释放过程中，所述移动锚点将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；
或者，在MeNB初始的SeNB修改准备过程中，对于添加承载或修改承载，所述移动锚点将承载的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于删除承载，所述移动锚点将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于接受承载添加或接受承载修改，所述移动锚点将承载的移动锚点针对MeNB分配的GPRS隧道协议信息通知给MeNB。
这里，所述移动锚点将分配的GPRS隧道协议信息通知给MeNB或SeNB，包括：
当MeNB和SeNB的交互消息不是封装在X2传输消息时，所述移动锚点将分配的GPRS隧道协议信息添加至MeNB和SeNB的交互消息中，通知给SeNB或MeNB；
当MeNB和SeNB的交互消息封装在X2传输消息时，所述移动锚点可以将分配的GPRS隧道协议信息添加至独立于X2传输消息的MeNB和SeNB的交互消息中，通知给SeNB或MeNB；或者，所述移动锚点也可以将分配的隧道协议信息封装在X2传输消息中的交互消息中，通知给SeNB或者MeNB。
如此，通过本发明实施例所述的数据转发方法，在本发明实施例如图5所示的双连接架构下，将具备X2接口代理功能的移动锚点作为用户面汇聚时，能够有效打通经过具有X2数据面代理功能的移动锚点的数据发送或者前传的通道，使得用户面数据从MeNB或者SeNB经过移动锚点发送到对端的SeNB或者MeNB。
本发明实施例还提供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，所述计算机可执行指令用于执行本发明实施例所述数据转发方法。
实施例二
图7为本发明一应用实例的数据转发方法的实现流程示意图一，所述应用实例以SCG承载为例，所涉及的是双连接架构中的SeNB添加准备过程，且该过程为MeNB和SeNB的交互消息封装在X2传输消息的情况。如图7所示，所述数据转发方法包括如下步骤：
步骤201：MeNB发送X2消息传输(X2 MESSAGE TRANSFER)消息到移动锚点，所述X2传输消息中封装有SeNB添加请求(SENB ADDITION REQUEST)消息。
具体地，MeNB将SeNB添加请求消息封装到X2传输消息中，并在X2传输消息中添加源MeNB的标识和目标SeNB的标识作为路由信息；之后，MeNB将封装有SeNB添加请求消息的X2传输消息发送到移动锚点。
这里，所述SeNB添加请求消息中包括MeNB中唯一在X2接口上标识UE的MeNB X2AP ID、UE安全能力(UE Security Capabilities)、SeNB安全密钥(SeNB Security Key)、SeNB中的UE合计最大数据率(SeNB UE Aggregate Maximum Bit Rate)以及承载信息等。所述承载信息包括承载标识、承载的服务质量(QoS)参数、承载的S-GW端的GTP信息。其中，所述GTP信息包括传输层地址和隧道端点标识(TEID)。
步骤202：移动锚点将封装有SeNB添加请求消息的X2传输消息转发到目标SeNB；
具体地，移动锚点根据X2传输消息中携带的目标SeNB标识，将封装有SeNB添加请求消息的X2传输消息转发到目标SeNB。
步骤203：SeNB发送X2传输消息到移动锚点，所述X2传输消息中封 装有SeNB添加确认(SENB ADDITION ACKNOWLEDGE)消息；
具体地，SeNB将SeNB添加确认消息封装到X2传输消息中，并在X2传输消息中携带源SeNB的标识和目标MeNB的标识作为路由信息；之后，SeNB将封装有SeNB添加确认消息的X2传输消息发送到移动锚点。
这里，SeNB添加确认消息中包括MeNB中唯一在X2接口上标识UE的MeNB X2AP ID、SeNB中唯一在X2接口上标识UE的SeNB X2AP ID、承载标识、承载的SeNB端的GTP信息、承载的下行数据前传的SeNB端的GTP信息、承载的上行数据前传的SeNB端的GTP信息。其中，所述GTP信息包括传输层地址和隧道端点标识。
步骤204：移动锚点将封装有SeNB添加确认消息的X2传输消息的X2传输消息转发到目标MeNB。
具体地，移动锚点根据X2传输消息中携带的目标MeNB标识，将封装有SeNB添加确认消息的X2传输消息转发到目标MeNB。
这里，在另一应用实例中，移动锚点还可以在X2传输消息中包括承载的数据前传的移动锚点端针对MeNB分配的GTP信息，具体包括承载的下行数据前传的移动锚点端针对MeNB分配的GTP信息、承载的上行数据前传的移动锚点端针对MeNB分配的GTP信息。或者，移动锚点也可以在SeNB添加请求消息中包括承载的数据前传的移动锚点端针对MeNB分配的GTP信息，具体包括承载的下行数据前传的移动锚点端针对MeNB分配的GTP信息、承载的上行数据前传的移动锚点端针对MeNB分配的GTP信息。
本发明实施例还提供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，所述计算机可执行指令用于执行本发明实施例所述数据转发方法。
实施例三
图8为本发明一应用实例的数据转发方法的实现流程示意图二，所述应用实例以split承载为例，所涉及的是双连接架构中的SeNB添加准备过程，且该过程为MeNB和SeNB的交互消息不是封装在X2传输消息的情况。如图8所示，所述数据转发方法包括如下步骤：
步骤301：MeNB发送SeNB添加请求消息给移动锚点；
这里，SeNB添加请求消息不封装在X2传输消息中，而是通过MeNB直接发送给移动锚点，且所述SeNB添加请求消息中包括源MeNB的标识和目标SeNB的标识。所述SeNB添加请求消息中包括MeNB中唯一在X2接口上标识UE的MeNB X2AP ID、承载信息等。所述承载信息包括承载标识、承载的服务质量参数、承载的MeNB端的GTP信息。
步骤302：移动锚点根据接收到的SeNB添加请求消息中的目标SeNB的标识将SeNB添加请求消息发送到目标SeNB。
具体地，移动锚点可以在SeNB添加请求消息中添加承载的移动锚点端针对SeNB分配的GTP信息；之后，移动锚点根据接收到的SeNB添加请求消息中的目标SeNB的标识将SeNB添加请求消息发送到目标SeNB。
步骤303：SeNB发送SeNB添加确认消息给移动锚点；
这里，所述SeNB添加确认消息不封装在X2传输消息中，而是通过SeNB直接发送给移动锚点，且所述SeNB添加确认消息中包括源SeNB的标识和目标MeNB的标识。SeNB添加确认消息包括MeNB中唯一在X2接口上标识UE的MeNB X2AP ID、SeNB中唯一在X2接口上标识UE的SeNB X2AP ID、承载的SeNB端的GTP信息。
步骤304：移动锚点根据接收到的SeNB添加确认消息中的目标MeNB的标识将SeNB添加确认消息发送到目标MeNB。
具体地，移动锚点可以在SeNB添加确认消息中添加承载的移动锚点端针对MeNB分配的GTP信息；之后，移动锚点根据接收到的SeNB添加确 认消息中的目标MeNB的标识将SeNB添加确认消息发送到目标MeNB。
本发明实施例还提供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，所述计算机可执行指令用于执行本发明实施例所述数据转发方法。
实施例四
图9为本发明一应用实例的数据转发方法的实现流程示意图三，所述应用实例以SCG承载为例，所涉及的是双连接架构中的MeNB初始的SeNB释放过程，且该过程为MeNB和SeNB的交互消息封装在X2传输消息的情况。如图9所示，所述数据转发方法包括如下步骤：
步骤401：MeNB发送X2传输消息到移动锚点，所述X2传输消息中封装有SeNB释放请求(SENB RELEASE REQUEST)消息。
具体地，MeNB将SeNB释放请求消息封装到X2传输消息中，并在X2传输消息中添加源MeNB的标识和目标SeNB的标识作为路由信息；之后，MeNB将封装有SeNB释放请求消息的X2传输消息发送到移动锚点。
这里，SeNB释放请求消息中包括MeNB中唯一在X2接口上标识UE的MeNB X2AP ID、SeNB中唯一在X2接口上标识UE的SeNB X2AP ID、承载的下行数据前传的MeNB端的GTP信息、承载的上行数据前传的MeNB端的GTP信息。
步骤402：移动锚点将封装有SeNB释放请求消息的X2传输消息转发到目标SeNB；
具体地，移动锚点根据X2传输消息中携带的目标SeNB标识，将封装有SeNB释放请求消息的X2传输消息发送到目标SeNB。
在另一应用实例中，移动锚点还可以在X2传输消息中包括承载的数据前传的移动锚点端针对SeNB分配的GTP信息，具体包括承载的下行数据前传的移动锚点端针对SeNB分配的GTP信息、承载的上行数据前传的移 动锚点端针对SeNB分配的GTP信息；或者，移动锚点也可以在SeNB释放请求消息中包括承载的数据前传的移动锚点端针对SeNB分配的GTP信息，具体包括承载的下行数据前传的移动锚点端针对SeNB分配的GTP信息、承载的上行数据前传的移动锚点端针对SeNB分配的GTP信息。
本发明实施例还提供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，所述计算机可执行指令用于执行本发明实施例所述数据转发方法。
实施例五
图10为本发明一应用实例的数据转发方法的实现流程示意图四，所述应用实例以split承载为例，所涉及的是双连接架构中的MeNB初始的SeNB释放过程，且该过程为MeNB和SeNB的交互消息不是封装在X2传输消息的情况。如图10所示，所述数据转发方法包括如下步骤：
步骤501：MeNB发送SeNB释放请求消息给移动锚点；
这里，SeNB释放请求消息不封装在X2传输消息中，而是通过MeNB直接发送给移动锚点，且所述SeNB释放请求消息中包括源MeNB的标识和目标SeNB的标识。SeNB释放请求消息中包括MeNB中唯一在X2接口上标识UE的MeNB X2AP ID、SeNB中唯一在X2接口上标识UE的SeNB X2AP ID、承载的下行数据前传的MeNB端的GTP信息。步骤502：移动锚点根据接收到的释放请求消息中的目标SeNB的标识将SeNB添加请求消息发送到目标SeNB。
具体地，移动锚点可以在SeNB释放请求消息中添加承载的下行数据前传的移动锚点端针对SeNB分配的GTP信息；之后，移动锚点根据接收到的SeNB释放请求消息中的目标SeNB的标识将SeNB释放请求消息发送到目标SeNB。
本发明实施例还提供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，所述计算机可执行指令用于执行本发明实施例所述数据转发方法。
实施例六
图11为本发明一应用实例的数据转发方法的实现流程示意图五，所述应用实例以split承载为例，所涉及的是双连接架构中的MeNB初始的SeNB修改过程，且该过程为MeNB和SeNB的交互消息不是封装在X2传输消息的情况。如图11所示，所述数据转发方法包括如下步骤：
步骤601：MeNB发送SeNB修改请求(SeNB MODIFICATION REQUEST)消息给移动锚点；
这里，SeNB修改请求消息不封装在X2传输消息中，而是通过MeNB直接发送给移动锚点，且所述SeNB修改请求消息中包括源MeNB的标识和目标SeNB的标识。SeNB修改请求消息中包括MeNB中唯一在X2接口上标识UE的MeNB X2AP ID、SeNB中唯一在X2接口上标识UE的SeNB X2AP ID、SCG改变指示、UE安全能力、SeNB安全密钥、SeNB中的UE合计最大数据率以及承载相关的信息等。承载相关的信息包括添加的承载信息、修改的承载信息、删除的承载信息。添加承载信息包括承载标识、承载的服务质量参数、承载的S-GW端的GTP信息。修改承载信息包括承载标识、承载的服务质量参数、承载的S-GW端的GTP信息。承载释放信息包括承载标识、承载的下行数据前传的MeNB端的GTP信息、承载的上行数据前传的MeNB端的GTP信息。
步骤602：移动锚点根据接收到的SeNB修改请求消息中的目标SeNB的标识将SeNB修改请求消息发送到目标SeNB。
具体地，移动锚点可以在SeNB修改请求消息中添加承载的下行数据前传的移动锚点端针对SeNB分配的GTP信息和承载的上行数据前传的移动锚点端针对SeNB分配的GTP信息；之后，移动锚点根据接收到的SeNB 修改请求消息中的目标SeNB的标识将SeNB修改请求消息发送到目标SeNB。
步骤603：SeNB发送SeNB修改请求确认(SeNB MODIFICATION REQUEST ACKNOWLEDGE)消息给移动锚点；
这里，SeNB修改请求确认消息不封装在X2传输消息中，而是通过MeNB直接发送给移动锚点，且所述SeNB修改请求确认消息中包括源SeNB的标识和目标MeNB的标识。SeNB修改请求确认消息中包括MeNB中唯一在X2接口上标识UE的MeNB X2AP ID、SeNB中唯一在X2接口上标识UE的SeNB X2AP ID、承载相关的信息。承载相关的信息包括接受承载添加的信息、接受承载修改的信息和接收承载释放的信息。接受承载添加的信息包括承载标识、承载的SeNB端的GTP信息、承载的下行数据前传的SeNB端的GTP信息、承载的上行数据前传的SeNB端的GTP信息。接受承载修改的信息包括承载标识、承载的SeNB端的GTP信息。接受承载删除的信息包括承载标识。
步骤604：移动锚点根据接收到的SeNB修改请求确认消息中的目标MeNB的标识将SeNB修改请求确认消息发送到目标MeNB。
具体地，移动锚点可以在SeNB修改请求确认消息中添加承载的下行数据前传的移动锚点端针对MeNB分配的GTP信息和承载的上行数据前传的移动锚点端针对MeNB分配的GTP信息；之后，移动锚点根据接收到的SeNB修改请求确认消息中的目标MeNB的标识将SeNB修改请求确认消息发送到目标MeNB。
本发明实施例还提供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，所述计算机可执行指令用于执行本发明实施例所述数据转发方法。
实施例七
图12为本发明一应用实例的数据转发方法的实现流程示意图六，所述应用实例以split承载为例，所涉及的是双连接架构中的MeNB初始的SeNB修改准备过程，且该过程为MeNB和SeNB的交互消息封装在X2传输消息的情况。如图12所示，所述数据转发方法包括如下步骤：
步骤701：MeNB发送X2传输消息到移动锚点，所述X2传输消息中封装有SeNB修改请求消息。
具体地，MeNB将SeNB修改请求消息封装到X2传输消息中，并在X2传输消息中添加源MeNB的标识和目标SeNB的标识作为路由信息；之后，MeNB将封装有SeNB修改请求消息的X2传输消息发送到移动锚点。
这里，SeNB修改请求消息中包括MeNB中唯一在X2接口上标识UE的MeNB X2AP ID、SeNB中唯一在X2接口上标识UE的SeNB X2AP ID、SCG改变指示以及承载相关的信息等。承载相关的信息包括添加承载信息、修改承载信息、删除承载信息。添加承载信息包括承载标识、承载的服务质量参数、承载的MeNB端的GTP信息。修改承载信息包括承载标识、承载的服务质量参数、承载的MeNB端的GTP信息。释放承载信息包括承载标识、承载的下行数据前传的MeNB端的GTP信息。
步骤702：移动锚点将封装有SeNB修改请求消息的X2传输消息转发到目标SeNB；
具体地，移动锚点根据X2传输消息中携带的目标SeNB标识，将封装有SeNB修改请求消息的X2传输消息发送到目标SeNB。
在另一应用实例中，移动锚点还可以在X2传输消息包括添加承载信息、修改承载信息和删除承载信息。其中，添加承载信息和修改承载信息中包括承载的移动锚点端针对SeNB分配的GTP信息；删除承载信息包括承载的下行数据前传的移动锚点端针对SeNB分配的GTP信息。或者，移动锚点又可以在SeNB修改请求消息的添加承载信息中包括承载的移动锚 点端针对SeNB分配的GTP信息，在SeNB修改请求消息的修改承载信息中包括承载的移动锚点端针对SeNB分配的GTP信息，在SeNB修改请求消息的删除承载信息中包括承载的下行数据前传的移动锚点端针对SeNB分配的GTP信息。
步骤703：SeNB发送X2传输消息到移动锚点，所述X2传输消息中封装有修改请求确认消息；
具体地，SeNB将SeNB修改请求确认消息封装到X2传输消息中，并在X2传输消息中携带源SeNB的标识和目标MeNB的标识作为路由信息；之后，SeNB将封装有修改请求确认消息的X2传输消息发送到移动锚点。
这里，SeNB修改请求确认消息包括MeNB中唯一在X2接口上标识UE的MeNB X2AP ID、SeNB中唯一在X2接口上标识UE的SeNB X2AP ID、承载相关的信息。承载相关的信息包括接受承载添加的信息、接受承载修改的信息和接收承载释放的信息。其中，所述接受承载添加的信息包括承载标识、承载的SeNB端的GTP信息；接受承载修改的信息包括承载标识、承载的SeNB端的GTP信息。接受承载删除的信息包括承载标识。
步骤704：移动锚点将封装有SeNB修改请求确认消息的X2传输消息转发到目标MeNB。
具体地，移动锚点根据X2传输消息中携带的目标MeNB标识，将封装有SeNB修改请求确认消息的X2传输消息转发到目标MeNB。
这里，在另一应用实例中，移动锚点还可以在X2传输消息包括接受承载添加的信息和接受承载修改的信息，接受承载添加的信息和接受承载修改的信息包括承载的移动锚点针对MeNB分配的GTP信息；或者，移动锚点又可以在SeNB修改请求确认消息的接受承载添加的信息中包括承载的移动锚点针对MeNB分配的GTP信息，在SeNB修改请求确认消息的接受承载修改的信息中包括承载的移动锚点针对MeNB分配的GTP信息。
本发明实施例还提供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，所述计算机可执行指令用于执行本发明实施例所述数据转发方法。
实施例八
图13为本发明实施例移动锚点的组成结构示意图，如图13所示，所述移动锚点建立在MeNB和SeNB之间，所述移动锚点包括分配模块801和通知模块802；
所述分配模块801，配置为当MeNB和SeNB之间有交互消息经过移动锚点时，所述移动锚点分配GPRS隧道协议信息；
所述通知模块802，配置为将所述分配模块801分配的GPRS隧道协议信息通知给MeNB或SeNB。
在一实施例中，所述通知模块802，配置为当MeNB和SeNB的交互消息不是封装在X2传输消息时，将分配的GPRS隧道协议信息添加至MeNB和SeNB的交互消息中，通知给SeNB或MeNB。
在又一实施例中，所述通知模块802，还配置为当MeNB和SeNB的交互消息封装在X2传输消息时，将分配的GPRS隧道协议信息添加至独立于X2传输消息的MeNB和SeNB的交互消息中，通知给SeNB或MeNB；或者，将分配的GPRS隧道协议信息封装在X2传输消息中的交互消息中，通知给SeNB或者MeNB。
在一实施例中，如图14所示，在双连接SCG承载中，所述通知模块802包括第一通知子模块802a；其中，
所述第一通知子模块802a，配置为在SeNB添加准备过程中，将承载的下行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB；
所述第一通知子模块802a，还配置为在MeNB初始的SeNB释放过程中，将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；
所述第一通知子模块802a，还配置为在MeNB初始的SeNB修改准备过程中，对于释放承载，将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于接受承载添加，将承载的下行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB。
在一实施例中，在双连接split承载中，所述通知模块802包括第二通知子模块802b；其中，
所述第二通知子模块802b，配置为在SeNB添加准备过程中，将承载的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB，将所述移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB；
所述第二通知子模块802b，还配置为在MeNB初始的SeNB释放过程中，将承载的下行数据前传的移动锚点端针对SeNB分配的SeNB隧道协议信息通知给SeNB；
所述第二通知子模块802b，还配置为在MeNB初始的SeNB修改准备过程中，对于添加承载或修改承载，所述移动锚点将承载的移动锚点端针对SeNB分配的SeNB隧道协议信息通知给SeNB；对于删除承载，所述移动锚点将承载的下行数据前传的移动锚点端针对SeNB分配的SeNB隧道协议信息通知给SeNB；对于接受承载添加或接受承载修改，所述移动锚点将承载的移动锚点针对MeNB分配的SeNB隧道协议信息通知给MeNB。
本发明实施例所述移动锚点中的各模块，及其各模块所包括的子模块均可以通过移动锚点中的处理器实现，也可以通过具体的逻辑电路实现；比如，在实际应用中，可由位于移动锚点的中央处理器(Central Processing Unit，CPU)、微处理器(Micro Processor Unit，MPU)、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。
本发明实施例所记载的技术方案之间，在不冲突的情况下，可以任意组合。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、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。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。
工业实用性
本发明实施例所述数据转发方法，当MeNB和SeNB之间有交互消息经过移动锚点时，所述移动锚点分配GPRS隧道协议信息，并将分配的隧道协议信息隧道协议信息通知给MeNB或SeNB；所述移动锚点为建立在MeNB和SeNB之间的移动锚点。如此，在双连接架构下，将具备X2接口代理功能的移动锚点作为用户面汇聚时，能够有效打通经过具有X2数据面代理功能的移动锚点的数据发送或者前传的通道，使得用户面数据从MeNB或者SeNB经过移动锚点发送到对端的SeNB或者MeNB。

Claims (12)

  1. 一种数据转发方法，所述方法包括：
    当主控基站MeNB和受控基站SeNB之间有交互消息经过移动锚点时，所述移动锚点分配通用分组无线业务GPRS隧道协议信息，并将分配的GPRS隧道协议信息通知给MeNB或SeNB；所述移动锚点为建立在MeNB和SeNB之间的移动锚点。
  2. 根据权利要求1所述的方法，其中，在双连接SCG承载中，所述移动锚点分配的GPRS隧道协议信息通知给MeNB或SeNB，包括：
    在SeNB添加准备过程中，所述移动锚点将承载的下行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB；
    或者，在MeNB初始的SeNB释放过程中，所述移动锚点将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；
    或者，在MeNB初始的SeNB修改准备过程中，对于释放承载，所述移动锚点将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于接受承载添加，所述移动锚点将承载的下行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB。
  3. 根据权利要求1所述的方法，其中，在双连接split承载中，所述移动锚点将分配的隧道协议信息通知给MeNB或SeNB，包括：
    在SeNB添加准备过程中，所述移动锚点将承载的移动锚点端针对 SeNB分配的GPRS隧道协议信息通知给SeNB，将移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB；
    或者，在MeNB初始的SeNB释放过程中，所述移动锚点将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；
    或者，在MeNB初始的SeNB修改准备过程中，对于添加承载或修改承载，所述移动锚点将承载的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于删除承载，所述移动锚点将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于接受承载添加或接受承载修改，所述移动锚点将承载的移动锚点针对MeNB分配的GPRS隧道协议信息通知给MeNB。
  4. 根据权利要求1至3任一项所述的方法，其中，当MeNB和SeNB的交互消息不是封装在X2传输消息时，所述移动锚点将分配的GPRS隧道协议信息通知给MeNB或SeNB，包括：
    所述移动锚点将分配的GPRS隧道协议信息添加至MeNB和SeNB的交互消息中，通知给SeNB或MeNB。
  5. 根据权利要求1至3任一项所述的方法，其中，当MeNB和SeNB的交互消息封装在X2传输消息时，所述移动锚点将分配的GPRS隧道协议信息通知给MeNB或SeNB，包括：
    所述移动锚点将分配的GPRS隧道协议信息添加至独立于X2传输消息的MeNB和SeNB的交互消息中，通知给SeNB或MeNB；
    或者，所述移动锚点将分配的GPRS隧道协议信息封装在X2传输消息中的交互消息中，通知给SeNB或者MeNB。
  6. 根据权利要求1至3任一项所述的方法，其中，所述GPRS隧道协议信息包括传输层地址和隧道端点标识。
  7. 一种移动锚点，所述移动锚点建立在MeNB和SeNB之间，所述移动锚点包括分配模块和通知模块；
    所述分配模块，配置为当MeNB和SeNB之间有交互消息经过移动锚点时，所述移动锚点分配GPRS隧道协议信息；
    所述通知模块，配置为将所述分配模块分配的GPRS隧道协议信息通知给MeNB或SeNB。
  8. 根据权利要求7所述的移动锚点，其中，在双连接SCG承载中，所述通知模块包括第一通知子模块；
    所述第一通知子模块，配置为在SeNB添加准备过程中，将承载的下行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB；
    所述第一通知子模块，还配置为在MeNB初始的SeNB释放过程中，将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；
    所述第一通知子模块，还配置为在MeNB初始的SeNB修改准备过程中，对于释放承载，将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于接受承载添加，将承载的下行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息和承载的上行数据前传的移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB。
  9. 根据权利要求7所述的移动锚点，其中，在双连接split承载中，所述通知模块包括第二通知子模块；
    所述第二通知子模块，配置为在SeNB添加准备过程中，将承载的移动 锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB，将所述移动锚点端针对MeNB分配的GPRS隧道协议信息通知给MeNB；
    所述第二通知子模块，还配置为在MeNB初始的SeNB释放过程中，将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；
    所述第二通知子模块，还配置为在MeNB初始的SeNB修改准备过程中，对于添加承载或修改承载，所述移动锚点将承载的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于删除承载，所述移动锚点将承载的下行数据前传的移动锚点端针对SeNB分配的GPRS隧道协议信息通知给SeNB；对于接受承载添加或接受承载修改，所述移动锚点将承载的移动锚点针对MeNB分配的GPRS隧道协议信息通知给MeNB。
  10. 根据权利要求7至9任一项所述的移动锚点，其中，
    所述通知模块，配置为当MeNB和SeNB的交互消息不是封装在X2传输消息时，将分配的GPRS隧道协议信息添加至MeNB和SeNB的交互消息中，通知给SeNB或MeNB。
  11. 根据权利要求7至9任一项所述的移动锚点，其中，
    所述通知模块，还配置为当MeNB和SeNB的交互消息封装在X2传输消息时，将分配的GPRS隧道协议信息添加至独立于X2传输消息的MeNB和SeNB的交互消息中，通知给SeNB或MeNB；或者，将分配的GPRS隧道协议信息封装在X2传输消息中的交互消息中，通知给SeNB或者MeNB。
  12. 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，所述计算机可执行指令用于执行权利要求1至6任一项所述数据转发方法。
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