WO2016107144A1 - Procédé, dispositif et système pour mettre à jour un chemin côté utilisateur - Google Patents

Procédé, dispositif et système pour mettre à jour un chemin côté utilisateur Download PDF

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Publication number
WO2016107144A1
WO2016107144A1 PCT/CN2015/084503 CN2015084503W WO2016107144A1 WO 2016107144 A1 WO2016107144 A1 WO 2016107144A1 CN 2015084503 W CN2015084503 W CN 2015084503W WO 2016107144 A1 WO2016107144 A1 WO 2016107144A1
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base station
secondary base
identifier information
information
control node
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PCT/CN2015/084503
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English (en)
Chinese (zh)
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黄莹
高音
和峰
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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
    • H04W8/00—Network data management

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, device, and system for updating a user plane path.
  • the macro base station serves as the only access side network element to provide access services for the UE.
  • 3GPP 3rd Generation Partnership Project
  • UE Supplemental access to the user equipment
  • the LPN has the features of low-cost, low-power, and easy-to-deploy. It usually has two deployment scenarios: hotspot deployment and enhanced coverage.
  • the LPN may also be referred to as a small base station, including a home base station (Home Node B, referred to as HeNB), a pico base station (pico), and a remote radio unit (referred to as RRU/Radio Remote Head for short).
  • Relay node referred to as RN.
  • RN Relay node
  • the industry proposes to ensure basic coverage by a certain base station (for example, a macro base station), and the UE always maintains radio resource control (Radio Resource Control abbreviated as RRC) connection with the base station, and the small cell It is only used as a transmission node (referred to as TP) to provide a higher data rate and meet the user's power saving requirements.
  • RRC Radio Resource Control abbreviated as RRC
  • the UE maintains a connection with at least two base stations and uses radio resources under two base stations to implement radio resource aggregation across nodes.
  • This architecture is generally referred to as a dual connectivity architecture, and FIG. 1 is according to the related art.
  • a dual-connection architecture block diagram is shown in FIG. 1.
  • the two base stations connected by the UE have a certain management control capability, which is usually called a master base station (master eNB, abbreviated as MeNB), and the other base station is called a secondary base station (Secondary eNB).
  • MeNB master base station
  • Secondary eNB secondary base station
  • the dual connection can be implemented through the SeNB adding procedure.
  • the SeNB can perform a series of management, such as SeNB modification, SeNB deletion, and SeNB modification.
  • the S1-U in the architecture option 1 terminates at the MeNB and the SeNB; for example, different users of the UE
  • the plane bearer data can be sent to the MeNB and the SeNB by the SGW, and then sent to the UE.
  • the S1-U is terminated by the MeNB, and the bearer is separated on the residential access network (referred to as the RAN).
  • the RAN residential access network
  • the Evolved Packet System (EPS) bearer arrives at the MeNB.
  • Part of the data in one bearer is separated to the SeNB, and then sent by the SeNB to the UE.
  • EPS Evolved Packet System
  • FIG. 2 is a schematic diagram of a dual connectivity architecture according to the related art.
  • the left diagram of FIG. 2 is a schematic diagram of the architecture option 1
  • the right diagram of FIG. 2 is a schematic diagram of the architecture option 1
  • a protocol stack that is, the architecture option 1 is adopted, and the user plane on the SeNB is used.
  • the protocol stack has a separate packet data convergence protocol (Packet Data Convergence Protoco for short PDCP1) and the following protocol layers, without bearer separation.
  • Packet Data Convergence Protoco for short PDCP1 Packet Data Convergence Protoco for short PDCP1
  • the HeNB under the dual connectivity architecture, it is possible to deploy the HeNB as a SeNB (or MeNB).
  • a home base station in a Long Term Evolution (LTE) system is called a home eNB.
  • the functions supported by the HeNB are basically the same as those of the eNB.
  • the process between the HeNB and the Evolved Packet Core (EPC) is basically the same as that between the eNB and the EPC. Since the deployment of the HeNB is usually not planned by the mobile operator's network, the coverage is small and numerous.
  • a new network element home base station is introduced between the HeNB and the EPC S1 connection under the evolved universal terrestrial radio access network E-UTRAN (Evolved UTRAN) architecture.
  • Gateway HeNB GW Home eNB Gateway
  • the HeNB can be connected to the Mobility Management Entity (MME) through the HeNB GW as an S1 proxy.
  • MME Mobility Management Entity
  • the S1 data between the HeNB and the SGW optionally terminates at the HeNB GW.
  • the MeNB needs to add a new SeNB to the UE or replace it with the SeNB served by the UE.
  • the S1 user plane data is sent by the SGW to the MeNB and the SeNB respectively. If the mobility anchor point of the S1 user plane is located in the core network element SGW, the MeNB initiates a path update process to update the S1 bearer information of the SGW. .
  • the SeNB is a small base station, and the coverage of the small base station is small and is densely deployed in the hotspot area.
  • the core network element is required to be added/changed each time the SeNB is added/changed. Participating in the interaction will result in a large core network signaling load and cause a delay in the SeNB management process.
  • the SeNB is connected to the SGW through the control node, if the UE moves between the HeNB (as the SeNB) under the same control node (for example, the HeNB GW or the mobility anchor MA), the mobility anchor point of the S1 user plane of the UE may be Located at the control node (such as HeNB GW or MA), this can save some core network S1 signaling interaction for user plane path update of the UE.
  • the dual connectivity architecture there is no method for how to update the S1 user plane data path after the UE replaces the HeNB under the same control node as the SeNB.
  • the embodiment of the present invention provides a method, an apparatus, and a system for updating a user plane path, so as to at least solve the problem in the related art, how to update the S1 user plane data after the UE has not replaced the HeNB under the same control node as the SeNB in the dual connectivity architecture. Path problem.
  • a method for updating a user plane path is provided.
  • the method is applied to a dual connectivity architecture of a base station, where: the first secondary base station receives identification information of a UE from a primary base station; The base station sends a path update request to the control node, where the path update request carries the identifier information.
  • the first secondary base station receiving the identifier information of the UE from the primary base station includes: receiving, by the first secondary base station, a request message or a secondary base station reconfiguration completion message sent by the primary base station by using a request for adding a secondary base station The identification information.
  • the identifier information is allocated to the UE by the mobility management entity MME or the control node is allocated to the UE.
  • the first secondary base station receiving the identifier information of the UE from the primary base station includes: the first secondary base station receiving the identifier information that is obtained by the primary base station from the second secondary base station, where the second secondary The base station and the first secondary base station are connected to the same control node.
  • the second secondary base station acquires the identifier information by using one of the following manners: the second secondary base station acquires the identifier information from the control node; and the second secondary base station acquires the location from the mobility management entity MME Decoding information; the second secondary base station acquires the UE identification information from the primary base station.
  • the second secondary base station sends the UE identifier to the primary base station, including: the second secondary base station sends the identifier information to the primary base station by using an X2 interface.
  • the primary base station, the first secondary base station, and the second secondary base station are one of: a macro base station, a home base station, a micro base station, or a pico base station; and the control node is one of: a home base station gateway, or Move the anchor point or add a new control element.
  • a method for updating a user plane path is provided, which is applied to a dual connectivity architecture of a base station, and includes: a control node receiving identifier information of a user equipment UE sent by a first secondary base station; The control node determines, according to the identifier information, whether to update the information of the UE to perform a user plane path.
  • the determining, by the control node, whether to update the UE to perform a user plane path according to the identifier information includes: determining, by the control node, whether a local context of the UE corresponding to the identifier information exists according to the identifier information Information; when the judgment result is yes, the control node updates according to the context information The UE user plane downlink path; when the determination result is no, the control node saves the identifier information.
  • a device for updating a user plane which is applied to a first secondary base station side in a dual connectivity architecture of a base station, and includes: a first receiving module, configured to receive a UE from a primary base station And the sending module is configured to send a path update request to the control node, where the path update request carries the identifier information.
  • an apparatus for updating a user plane which is applied to a dual connectivity architecture control node side of a base station, and includes: a second receiving module, configured to receive identifier information of a UE sent by the first secondary base station And a judging module, configured to determine, according to the identifier information, whether to update the UE to perform information of a user plane path.
  • the determining module is further configured to: determine, according to the identifier information, whether context information of the UE corresponding to the identifier information exists locally; when the determination result is yes, update the UE according to the context information. The user plane downlink path; when the judgment result is no, the identifier information is saved.
  • an update system for a user plane is provided, which is applied to a dual connectivity structure of a base station, where the system includes: a control node, a first secondary base station, and a primary base station; And sending, to the first secondary base station, identifier information of the user equipment UE, where the first secondary base station is configured to send a path update request message to the control node, where the path update request message carries The identifier information is configured to determine, according to the identifier information, whether to update path information of a user plane of the UE.
  • control node is further configured to determine whether the context information of the UE corresponding to the identifier information exists locally; when the determination result is yes, the control node updates the UE user according to the identifier information.
  • the downlink path information of the surface when the determination result is no, the control node saves the identification information.
  • system further includes: a second secondary base station, wherein the second secondary base station and the first secondary base station are connected to the same control node; and the second secondary base station is configured to acquire the identifier information The second secondary base station is configured to send the identification information to the primary base station.
  • the second secondary base station is configured to acquire the identifier information from the control node; or the second secondary base station is configured to acquire the identifier information from an MME; or the second secondary base station And configured to acquire the UE identification information from the primary base station.
  • the second secondary base station is configured to send the identifier information to the primary base station by using an X2 interface message.
  • the first secondary base station in the process of the user equipment UE moving from the second secondary base station to the first secondary base station, in order to realize that the user plane path information of the UE is switched from the second secondary base station to the first secondary base station, the first secondary base station is used.
  • Receiving The identification information of the UE from the primary base station is sent to the control node, and the identifier information is used by the control node to determine whether to update the downlink path of the user plane of the UE, so as to implement the UE user plane path when switching between the secondary base stations. Switching information.
  • the problem of how to update the S1 user plane data path after the UE replaces the base station under the same control node as the SeNB in the dual-connection architecture in the related art is solved, and the gap of the related art is filled.
  • FIG. 1 is a block diagram showing a structure of a dual connectivity architecture according to the related art
  • FIG. 2 is a schematic diagram of a dual connectivity architecture according to the related art
  • FIG. 3 is a flow chart 1 of a method for updating a user plane path according to an embodiment of the present invention
  • FIG. 4 is a second flowchart of a method for updating a user plane path according to an embodiment of the present invention.
  • FIG. 5 is a structural diagram 1 of an apparatus for updating a user plane path according to an embodiment of the present invention.
  • FIG. 6 is a second structural block diagram of an apparatus for updating a user plane according to an embodiment of the present invention.
  • FIG. 7 is a structural block diagram of an update system of a user plane path according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an application scenario of user plane path update according to an alternative embodiment of the present invention.
  • FIG. 9 is a flowchart 1 of a method for updating a user plane path according to an embodiment of the present invention.
  • FIG. 10 is a second flowchart of a user plane path update method according to an alternative embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a scenario of a user plane path update between UEs in an SeNB according to an alternative embodiment of the present invention.
  • FIG. 12 is a flowchart 1 of a method for updating a user plane path between UEs according to an alternative embodiment of the present invention
  • FIG. 13 is a second flowchart of a method for updating a user plane path between UEs in an SeNB according to an alternative embodiment of the present invention.
  • FIG. 3 is a user plane according to an embodiment of the present invention.
  • Flowchart update method Flowchart 1 the method is applied to a dual connectivity architecture with a base station, as shown in FIG. 3, the steps of the method include:
  • Step S302 The first secondary base station receives the identification information of the UE from the primary base station.
  • the second secondary base station and the first secondary base station correspond to the same control node
  • Step S304 The first secondary base station sends a path update request to the control node, where the path update request carries the identifier information.
  • the first secondary base station receives the identification information of the UE from the primary base station, and sends the identification information to the control node, where the identifier information is used by the control node to determine whether to update the downlink path of the user plane of the UE, thereby
  • the method for updating the user plane data path of the secondary base station is implemented.
  • the method for how to update the S1 user plane data path after the UE is replaced by the base station under the same control node in the dual connectivity architecture in the related art is solved. .
  • Manner 1 The first secondary base station receives the identifier information by using a request message for requesting to add the secondary base station.
  • Manner 2 The first secondary base station receives the identifier information by using the secondary base station reconfiguration completion message.
  • the HeNB that is the MeNB or the SeNB identity can be connected to the MME through the HeNB GW, and the S1 message exchanged between the MME and the MeNB/SeNB is forwarded by the HeNB GW;
  • the HeNB that is the identity of the MeNB or the SeNB can be connected to other base stations through the X2GW.
  • the X2 message exchanged between the MeNB/SeNB and other base stations, and the X2 message exchanged between the MeNB and the SeNB can be forwarded by the X2GW.
  • the SeNB may be an HeNB
  • the S1 interface exists between the SeNB and the HeNB GW.
  • the interface includes a user plane and a control plane.
  • the S1-C interface is mainly used for the S1 user plane path update of the UE, and the HeNB GW and the There is no UE-related S1 connection between the MMEs, and there is an S1 user plane interface between the HeNB GW and the SGW.
  • the foregoing manner 1 is adopted; and when the identification information is allocated to the UE by the control node, the foregoing manner 2 is adopted.
  • the first secondary base station in this embodiment receives the identifier information that the primary base station obtains from the second secondary base station, where the second secondary base station and the first secondary base station are connected to the same control node.
  • the identifier information involved in this embodiment may be an MME UE S1AP ID.
  • the logo The information is only used for exemplification, and the identification information involved in the present invention can be newly defined by the person skilled in the art to obtain new identification information, that is, the identification information in the embodiment is not limited to the present invention. Any information for uniquely identifying the UE on the control node, or information for uniquely identifying the UE on the MME, is within the scope of the present invention.
  • the identifier information in this embodiment is sent to the primary base station after the second secondary base station acquires the identification information in an optional implementation manner of the embodiment, and the method for obtaining the identification information for the second secondary base is There are various types in this embodiment, such as:
  • the second secondary base station acquires the identification information from the control node
  • the second secondary base station acquires the identification information from the mobility management entity MME.
  • Manner 3 The second secondary base station acquires UE identification information from the primary base station.
  • the manner in which the second secondary base station sends the UE identity information to the primary base station may be multiple in the embodiment, and may be implemented in an optional implementation manner in the optional embodiment.
  • the second secondary base station sends the identification information to the primary base station through the X2 interface.
  • the primary base station, the first secondary base station, and the second secondary base station involved in this embodiment may be one of the following: a macro base station, a home base station, a micro base station, or a pico base station; and the control node may be one of the following: a home base station Gateway, or mobile anchor point or new control network element. .
  • FIG. 4 is a second flowchart of a method for updating a user plane path according to an embodiment of the present invention. The method is applied to a dual connectivity architecture of a base station. As shown in FIG. 4, the steps of the method include:
  • Step S402 The control node receives the identifier information of the user equipment UE sent by the first secondary base station;
  • Step S404 The control node determines, according to the identifier information, whether to update the information of the UE to perform the user plane path.
  • control node determines whether to update the UE to perform the user plane path according to the identifier information may be implemented by:
  • Step S11 The control node determines, according to the identifier information, whether the context information of the UE corresponding to the identifier information exists locally;
  • Step S12 When the determination result is yes, the control node updates the UE user plane downlink path according to the context information;
  • Step S13 When the judgment result is no, the control node saves the identification information.
  • the context information of the UE can be found by using the UE identifier information by saving the identifier information.
  • a block diagram of the updating device of the user plane is also provided.
  • the device is used to implement the above-mentioned embodiments and optional embodiments, and the description thereof has been omitted.
  • the term “module” "unit” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 5 is a structural diagram of an apparatus for updating a user plane according to an embodiment of the present invention.
  • the first configuration is applied to a first secondary base station side in a dual connectivity architecture of a base station.
  • the apparatus includes: a first receiving module 52, configured to be at a user equipment UE. Receiving, by the second secondary base station, the identification information of the UE from the primary base station, wherein the second secondary base station and the first secondary base station correspond to the same control node, and the sending module 54 is coupled to the first receiving module.
  • the connection is configured to send a path update request to the control node, where the path update request carries the identifier information, where the identifier information is a basis for the control node to determine whether to update the downlink path of the UE user plane.
  • FIG. 6 is a second structural diagram of a device for updating a user plane according to an embodiment of the present invention.
  • the device is applied to a dual connectivity architecture control node side of a base station.
  • the apparatus includes: a second receiving module 62 configured to receive The identification information of the user equipment UE sent by the secondary base station; the determining module 64 is coupled to the second receiving module 64, and is configured to determine whether to update the information of the user plane path according to the identifier information.
  • the determining module 64 is further configured to: determine, according to the identifier information, whether the context information of the UE corresponding to the identifier information exists locally; when the determination result is yes, update the downlink path of the user plane of the UE according to the context information; When saving the identification information.
  • FIG. 7 is a structural block diagram of an update system of a user plane path according to an embodiment of the present invention.
  • the system is applied to a dual connectivity structure of a base station.
  • the system includes: a control node 72, a first secondary base station 74, and a primary base station 76. And a second secondary base station 78;
  • the primary base station 72 is configured to send the identification information of the user equipment UE to the first secondary base station 74 during the movement of the user equipment UE by the second secondary base station 78 to the first secondary base station 74;
  • the first secondary base station 74 is configured to send a path update request message to the control node 76, where the path update request message carries the identifier information;
  • the control node 76 is configured to determine, according to the identification information, whether to update the path information of the user plane of the UE.
  • control node 76 is further configured to determine whether the context information of the UE corresponding to the identifier information exists locally; when the determination result is yes, the control node updates the downlink path information of the user plane of the UE according to the identifier information, where the judgment result is Otherwise, the control node saves the identification information.
  • the system may further include: a second secondary base station 78;
  • the second secondary base station 78 can be configured to acquire identification information; and is configured to transmit identification information to the primary base station.
  • Manner 3 Obtain UE identification information from the primary base station.
  • the manner in which the second secondary base station sends the identifier information to the primary base station may be implemented in the following manner: the second secondary base station sends the identifier information to the primary base station by using the X2 interface message.
  • the control node uses a home base station gateway (HeNB GW) as an example for description.
  • HeNB GW home base station gateway
  • the HeNB of the MeNB or the SeNB identity can be connected to the MME through the HeNB GW, and the S1 message exchanged between the MME and the MeNB/SeNB is forwarded by the HeNB GW.
  • the MeNB or the SeNB is the HeNB
  • the X2 connection can be established through the X2GW, and the X2 message exchanged between the MeNB/SeNB and the other base station, and the X2 message exchanged between the MeNB and the SeNB can be forwarded by the X2GW.
  • the present optional embodiment will be further described in detail below with reference to the accompanying drawings and alternative embodiments.
  • FIG. 8 is a schematic diagram of an application scenario of a user plane path update according to an alternative embodiment of the present invention.
  • the SeNB is an HeNB, and an S1 interface exists between the SeNB and the HeNB GW, including a user plane and a control plane.
  • the C interface is mainly used for the S1 user plane path update of the UE.
  • FIG. 9 is a flowchart 1 of a method for updating a user plane path according to an embodiment of the present invention. As shown in FIG. 9, the steps of the method of this alternative embodiment include:
  • step S901 the UE is connected to the network through the MeNB. If the UE moves to the SeNB and detects the SeNB cell, the UE reports the measurement report to the MeNB, and the MeNB determines to perform the SeNB adding procedure for the UE according to the measurement report.
  • the MeNB sends an SeNB Add Request message to the SeNB, where the GPRS Tunneling Protocol (GTP) information that needs to be established on the SeNB by the SGW is included.
  • GTP GPRS Tunneling Protocol
  • Step S902 the SeNB sends a path update request message to the HeNB GW.
  • the path update request message includes the GTP information that needs to be set up on the SeNB and the GTP information that needs to be established on the SeNB.
  • the path update request message may be an S1 interface E-RAB modification finger. Indicates a message or S1 interface path transfer, or other S1 interface message.
  • the path update request message includes an identifier that is allocated by the SeNB for the SeNB-HeNB GW connection of the UE, such as an Enb UE S1AP ID.
  • the identifier is only one of the alternative embodiments.
  • the identifier may be redefined as needed to obtain a new UE identifier.
  • the HeNB GW returns a path update confirmation message to the SeNB.
  • the path update confirmation message includes an identifier that the HeNB GW allocates for the SeNB-HeNB GW connection of the UE, such as an MME UE S1AP ID. Of course, this identifier can also be redefined as needed to obtain a newly defined UE identifier.
  • the message includes GTP information that the HeNB GW allocates to the SeNB and the SGW for the bearer to be established on the SeNB.
  • the path update acknowledgement message may be an S1 interface E-RAB modification acknowledgement message or an S1 interface path transfer request acknowledgement message, or other S1 interface message.
  • the SeNB returns an SeNB addition request acknowledgement message to the MeNB.
  • the SeNB Add Request Acknowledgement message includes the identifier information that the HeNB GW allocates for the UE, such as the MME UE S1AP ID or the newly defined identifier.
  • the message further includes GTP information of the bearer that the HeNB GW allocates to the SGW to be established on the SeNB. After receiving the MeNB, the information is saved in the context of the corresponding UE.
  • Step S905 The MeNB initiates an RRC reconfiguration message procedure to the UE. After the UE reconfiguration is completed, the MeNB sends an SeNB reconfiguration complete message to the SeNB.
  • the MeNB sends a path update request message to the MME, where the path update request message includes the received GTP information of the bearer that the HeNB GW allocates to the SGW and needs to be established on the SeNB.
  • the path update request message is an S1 interface E-RAB modification indication message or an S1 interface path transfer, or other S1 interface message.
  • the present invention describes a method 2 of adding a first SeNB scenario to a UE by the MeNB.
  • the HeNB GW uses the MME to allocate identity information to the UE to retrieve the context of the UE.
  • the SeNB is an HeNB
  • the S1 interface exists between the SeNB and the HeNB GW, and includes a user plane and a control plane.
  • the S1-C interface is mainly used for the S1 user plane path update of the UE.
  • FIG. 10 is a second flowchart of a user plane path update method according to an alternative embodiment of the present invention. As shown in FIG. 10, the steps of the method of this alternative embodiment include:
  • step S1001 the UE is connected to the network through the MeNB. If the UE moves to the SeNB and detects the SeNB cell, the UE reports the measurement report to the MeNB. The MeNB determines to perform the SeNB addition procedure for the UE according to the measurement report. The MeNB sends an SeNB Add Request message to the SeNB, where the message includes the MME UE S1AP ID allocated by the MME for the S1 connection of the UE. The message also includes the GTP information of the bearer allocated by the SGW to be established on the SeNB.
  • the SeNB sends a path update request message to the HeNB GW.
  • the MME UE S1AP ID of the UE allocated by the MME received by the SeNB from the MeNB.
  • the message also includes the GTP information of the bearer that needs to be established on the SeNB, and the GTP information of the bearer that needs to be established on the SeNB.
  • the path update request message may be an S1 interface E-RAB modification indication message or an S1 interface path transfer, or other S1 interface message.
  • the path update request message includes an identifier that is allocated by the SeNB for the SeNB-HeNB GW connection of the UE, such as an Enb UE S1AP ID.
  • this identifier may also be redefined as needed to obtain a new UE identity.
  • the information is saved as a UE context.
  • the HeNB GW may subsequently retrieve the context of the UE by using the MME UE S1AP ID of the UE allocated by the MME.
  • the HeNB GW returns a path update confirmation message to the SeNB.
  • the path update acknowledgement message includes an identifier that is allocated by the HeNB GW for the SeNB-HeNB GW connection of the UE, such as an MME UE S1AP ID.
  • this identifier can also be a newly defined UE identifier.
  • the message includes GTP information that the HeNB GW allocates to the SeNB and the SGW for the bearer to be established on the SeNB.
  • the path update acknowledgement message may be an S1 interface E-RAB modification acknowledgement message or an S1 interface path transfer request acknowledgement message, or other S1 interface message.
  • the SeNB returns an SeNB addition request acknowledgement message to the MeNB.
  • the SeNB Add Request Acknowledgement message includes GTP information of the bearer that the HeNB GW allocates for the SGW to be established on the SeNB. After receiving the MeNB, the information is saved in the context of the corresponding UE.
  • Step S1005 The MeNB initiates an RRC reconfiguration message procedure to the UE. After the UE reconfiguration is completed, the MeNB sends an SeNB reconfiguration complete message to the SeNB.
  • the MeNB sends a path update request message to the MME, where the path update request message includes the received GTP information of the bearer allocated by the HeNB GW for the SGW to be established on the SeNB.
  • the path update request message is an S1 interface E-RAB modification indication message or an S1 interface path transfer, or other S1 interface message.
  • the optional embodiment describes a user plane path update method 1 in a scenario in which the MeNB of the UE is unchanged and the UE moves between the SeNBs.
  • the HeNB GW retrieves the context of the UE by assigning identification information to the UE itself.
  • 11 is a schematic diagram of a scenario in which a UE performs a user plane path update between SeNBs according to an optional embodiment of the present invention.
  • SeNB1 and SeNB2 are HeNBs, and a UE moves from a coverage area of SeNB1 to a coverage area of SeNB2, SeNB1/ An S1 interface exists between the SeNB2 and the HeNB GW.
  • the structure includes a user plane and a control plane.
  • FIG. 12 is a flowchart 1 of a method for updating a user plane path between UEs in an SeNB according to an alternative embodiment of the present invention. Such as shown in FIG. 12, the steps of the method in this embodiment include:
  • step S1201 if the UE moves from the SeNB1 to the SeNB2 and detects the SeNB2 cell, the UE reports the measurement report to the MeNB, and the MeNB determines to perform the SeNB change procedure for the UE to add the new SeNB2 according to the measurement report. Delete the old SeNB1.
  • the MeNB sends an SeNB Add Request message to the SeNB2, and assumes that the MeNB has obtained the identification information, such as the MME UE S1AP ID or the newly defined identifier, that the HeNB GW allocates for the UE when the UE accesses through the SeNB1.
  • the message includes the identifier information that the HeNB GW allocates for the UE when the UE accesses through the SeNB1.
  • the message includes GTP information of the bearer allocated by the SGW to be established on the SeNB2.
  • SeNB2 returns an SeNB addition request acknowledgement message to the MeNB.
  • Step S1203 The MeNB initiates an RRC reconfiguration message procedure to the UE. After the UE reconfiguration is completed, the MeNB sends an SeNB reconfiguration complete message to the SeNB2.
  • Step S1204 After the SeNB2 receives the SeNB reconfiguration complete message sent by the MeNB, and the UE has accessed the SeNB2, the SeNB2 sends a path update request message to the HeNB GW, where the path update request message includes the UE that is received by the MeNB from the SeNB1. The identification information assigned by the HeNB GW to the UE. The message also includes the GTP information of the bearer that needs to be established on the SeNB2.
  • the path update request message is an S1 interface E-RAB modification indication message or an S1 interface path transfer, or other S1 interface message.
  • Step S1205 After receiving the path update request message, the HeNB GW retrieves the context of the UE by using the identifier information allocated by the HeNB GW for the UE when the UE accesses through the SeNB1. After the path update is successfully performed, the HeNB GW replies to the SeNB2 with a path update confirmation message.
  • the path update confirmation message includes GTP information of the bearer that the HeNB GW allocates to the SeNB2 to be established on the SeNB.
  • the path update acknowledgement message is an S1 interface E-RAB modification acknowledgement message or an S1 interface path transfer request response message, or other S1 interface message.
  • the message carries the new UE identity information, such as the MME UE S1AP ID or the newly defined identifier.
  • Step S1206 If the SeNB2 receives the new UE identity information, such as the MME UE S1AP ID or the newly defined identifier, sent by the HeNB GW, the new UE identity information may be sent to the MeNB. For example, the request message can be modified by the SeNB.
  • the new UE identity information such as the MME UE S1AP ID or the newly defined identifier
  • the user plane path update method 2 in the scenario that the MeNB of the UE is unchanged and the UE moves between the SeNBs is described in this alternative embodiment.
  • the HeNB GW retrieves the context of the UE by assigning identity information to the UE through the MME.
  • the SeNB1 and the SeNB2 are HeNBs, and the UE moves from the coverage area of the SeNB1 to the SeNB2 coverage area.
  • the S1 interface exists between the SeNB1/SeNB2 and the HeNBGW, including the user plane and the control plane.
  • the S1-C interface is mainly used.
  • the S1 user plane path update of the UE is described in this alternative embodiment.
  • the HeNB GW retrieves the context of the UE by assigning identity information to the UE through the MME.
  • the SeNB1 and the SeNB2 are HeNBs, and the UE moves from the coverage area of the SeNB1 to the SeNB2 coverage area.
  • the S1 interface exists between the SeNB1/SeNB2 and the He
  • FIG. 13 is a second flowchart of a user plane path update method between UEs according to an alternative embodiment of the present invention. As shown in FIG. 13, the steps of the method in this alternative embodiment include:
  • step S1301 if the UE moves from the SeNB1 to the SeNB2 and detects the SeNB2 cell, the UE reports the measurement report to the MeNB, and the MeNB determines to perform the SeNB change procedure for the UE to add the new SeNB2 according to the measurement report. Delete the old SeNB1.
  • the MeNB sends an SeNB Add Request message to the SeNB2, where the message includes the identifier information that the MME allocates for the S1 connection of the UE, such as the MME UE S1AP ID.
  • the message includes GTP information of the bearer allocated by the SGW to be established on the SeNB2.
  • SeNB2 returns an SeNB addition request acknowledgement message to the MeNB.
  • Step S1303 The MeNB initiates an RRC reconfiguration message procedure to the UE. After the UE reconfiguration is completed, the MeNB sends an SeNB reconfiguration complete message to the SeNB2.
  • Step S1304 After the SeNB2 receives the SeNB reconfiguration complete message sent by the MeNB, and the UE has accessed the SeNB2, the SeNB2 sends a path update request message to the HeNB GW, where the path update request message includes the MME that is received by the MeNB from the MeNB. Identification information. The message also includes the GTP information of the bearer that needs to be established on the SeNB2.
  • the path update request message is an S1 interface E-RAB modification indication message or an S1 interface path transfer, or other S1 interface message.
  • Step S1305 After receiving the path update request message, the HeNB GW retrieves the context of the UE by using the identifier information allocated by the MME for the UE. After the path update is successfully performed, the HeNB GW replies to the SeNB2 with a path update confirmation message.
  • the path update confirmation message includes GTP information of the bearer that the HeNB GW allocates to the SeNB2 to be established on the SeNB.
  • the path update acknowledgement message is an S1 interface E-RAB modification acknowledgement message or an S1 interface path transfer request response message, or other S1 interface message.
  • path update request message in the foregoing optional embodiments 1 to 4 may update the path request by using an E-RAB Modification Indication message, which is of course only illustrated. Other messages capable of updating the path request are in this alternative embodiment. it is also fine.
  • the method, device, and system for updating a user plane path provided by the embodiments of the present invention have the following beneficial effects: switching between UE user plane path information when switching between secondary base stations is implemented.

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  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé, un dispositif et un système pour mettre à jour un chemin côté utilisateur. Le procédé comprend les opérations suivantes : une première station de base auxiliaire reçoit des informations d'identité d'un équipement utilisateur (UE) à partir d'une station de base principale ; et la première station de base auxiliaire transmet une requête de mise à jour de chemin à un nœud de commande, la requête de mise à jour de chemin transportant les informations d'identité. La présente invention résout le problème dans l'état de la technique selon lequel, dans une architecture pour une connectivité double, aucun procédé n'est actuellement disponible pour mettre à jour un chemin de données côté utilisateur S1 lorsqu'un UE remplace une station de base par une autre, telle qu'un SeNB, sous un même nœud de commande, comblant ainsi un écart dans l'état de la technique.
PCT/CN2015/084503 2014-12-31 2015-07-20 Procédé, dispositif et système pour mettre à jour un chemin côté utilisateur WO2016107144A1 (fr)

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