WO2010017747A1 - 一种异构网络切换中获取位置区信息的方法、装置和系统 - Google Patents

一种异构网络切换中获取位置区信息的方法、装置和系统 Download PDF

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Publication number
WO2010017747A1
WO2010017747A1 PCT/CN2009/073102 CN2009073102W WO2010017747A1 WO 2010017747 A1 WO2010017747 A1 WO 2010017747A1 CN 2009073102 W CN2009073102 W CN 2009073102W WO 2010017747 A1 WO2010017747 A1 WO 2010017747A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
location area
target network
network
mobility management
Prior art date
Application number
PCT/CN2009/073102
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English (en)
French (fr)
Inventor
帅扬来
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP09806350.6A priority Critical patent/EP2320689B1/en
Publication of WO2010017747A1 publication Critical patent/WO2010017747A1/zh
Priority to US12/767,377 priority patent/US8284735B2/en
Priority to US13/294,008 priority patent/US8184595B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H04W36/00224Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
    • H04W36/00226Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB] wherein the core network technologies comprise IP multimedia system [IMS], e.g. single radio voice call continuity [SRVCC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W60/00Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08Mobility data transfer
    • H04W8/10Mobility data transfer between location register and external networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W92/00Interfaces specially adapted for wireless communication networks
    • H04W92/16Interfaces between hierarchically similar devices

Definitions

  • the present invention relates to mobile communication technologies, and in particular, to a method, device and system for acquiring location area information in heterogeneous network switching. Background technique
  • Broadband wireless access network belongs to non-
  • the application of the broadband wireless access network brings high-speed access, and also brings the problem that users need to switch between different access networks.
  • the smooth handover requires the target network to grasp various parameters of the UE, including the status of the UE, and the location area of the UE in the target network. Wait.
  • the target network can perform state maintenance on the UE after the UE completes the entire handover process after accessing the target network, and ensures that the UE normally uses the communication network.
  • the target network In the process of switching between existing heterogeneous networks, for example, UEs between 3GPP and non-3GPP networks, the target network cannot know the location area information of the UE. Therefore, the UE cannot know the location area information of the target network where the UE is located, which is required to complete the handover. Therefore, the UE may not be able to switch to the target network, or after the UE enters the target network, the target network cannot perform management operations such as state maintenance on the UE.
  • the main purpose of various embodiments of the present invention is to provide a heterogeneous network handover.
  • Embodiments of the present invention also provide an apparatus and system for acquiring location area information in a heterogeneous network handover.
  • a method for obtaining location area information in a heterogeneous network handover according to an embodiment of the present invention, the method includes:
  • the mobility management entity of the target network receives the location area related information of the user equipment sent by the mobility management entity of the source network;
  • the mobility management entity of the target network acquires the location area information required by the user equipment according to the location area related information when confirming that the location area related information of the user equipment is received;
  • the mobility management entity of the target network sends the location area information required by the user equipment to the user equipment.
  • the mobility management entity of the embodiment of the present invention includes a processing module and a transceiver module, where the transceiver module is configured to send location information about the user equipment to the mobility management entity of the target network, and the user equipment The required location area information is sent to the user equipment;
  • the processing module is configured to acquire location area related information of the user equipment, and send the location area related information to the mobility management entity of the target network by using the sending and receiving module.
  • Another mobility management entity of the embodiment of the present invention includes a processing module and a transceiver module, wherein
  • the processing module is configured to confirm that the transceiver module receives the location area related information of the user equipment, acquire location location information in the target network required by the user equipment according to the location area related information, and pass the transceiver module The location area information in the target network required by the user equipment is sent to the user equipment.
  • a system for acquiring location area information in a heterogeneous network handover includes a user equipment, a mobility management entity of a source network, and a mobility management entity of a target network, where
  • the mobility management entity of the target network is used,
  • Another system for obtaining location area information in a heterogeneous network handover includes a user equipment, a mobility management entity of a source network, and a mobility management entity of a target network, where mobility management of the source network The entity is configured to obtain location area related information of the user equipment, and send the location area related information of the user equipment to a mobility management entity of the target network.
  • a method for obtaining location area information in another heterogeneous network handover includes:
  • the mobility management entity of the target network receives an attach request message sent by the user equipment through the mobility management entity of the source network;
  • the mobility management entity of the target network constructs an attach accept message according to the attach request message, and sends the attach accept message to the user equipment by the mobility management entity of the source network.
  • the attach accept message does not include location area information required by the user equipment;
  • the mobility management entity of the target network receives an attach complete message sent by the user equipment by the mobility management entity of the source network, and completes the user equipment wireless link handover to the target network according to the attach complete message;
  • the mobility management entity of the target network After completing the switching of the user equipment radio link to the target network, the mobility management entity of the target network obtains the location area information of the user equipment by using the location area update process initiated by the user equipment.
  • Another mobility management entity of the embodiment of the present invention includes a processing module and a transceiver module, wherein
  • the transceiver module is configured to receive an attach request message and an attach complete message sent by the user equipment, and send an attach accept message to the user equipment;
  • the processing module is used,
  • the attach accept message is constructed according to the attach request message, and the attach accept message is sent by the transceiver module, where the attach accept message does not include the user equipment Required location area information;
  • a user equipment of the embodiment of the present invention includes a transceiver module and a processing module, where the transceiver module is configured to receive an attachment acceptance sent by a mobility management entity of a target network. And sending an attach request message and an attach complete message to the mobility management entity of the target network; the processing module is configured to construct an attach request message according to the decision to initiate the handover; and confirm that the location area required by the user equipment is not received In the information, the attach complete message is constructed according to the attach accept message, and the attach complete message is sent by the transceiver module; and after the wireless link of the user equipment is switched to the target network, the location area update process is initiated.
  • Another system for acquiring location area information in a heterogeneous network handover includes a mobility management entity of a target network, a mobility management entity of a source network, and a user equipment, where the mobility management entity of the target network uses Yu,
  • the location area information of the user equipment is obtained by the location area update process initiated by the user equipment.
  • the system for acquiring the location area information in the heterogeneous network switching of the embodiment of the present invention includes a mobility management entity of the target network, a mobility management entity of the source network, and a user equipment, where the user equipment is used,
  • Embodiments of the present invention provide a method and device for acquiring location area information in heterogeneous network switching And the system, the embodiment determines the location area related information of the user equipment in the target network by the mobility management entity in the source network during the handover process, and sends the information to the mobility management entity of the target network, so that the target network
  • the mobility management entity can obtain the location area information of the user in the target network by using the location area related information, and clearly understand the location area where the user equipment is located. Therefore, the user equipment can successfully complete the handover, and the target network can normally maintain the state of the user equipment.
  • the user equipment can periodically perform location update through the location area information sent by the mobility management entity of the target network, so that the target network can maintain the state of the user equipment.
  • the embodiment of the present invention further provides a handover method, device, and system in another wireless network.
  • the mobility management device and the user equipment of the target network can successfully complete the handover process in the absence of location area information.
  • the location area update process is initiated, so that the target network can clearly understand the location area where the user equipment is located, and the user equipment can also obtain the location area information of the user equipment, thereby achieving smooth handover. And the state of the target network that normally maintains the user equipment.
  • FIG. 1 is a flowchart of a first method for obtaining location area information in a heterogeneous network handover according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of an apparatus for acquiring location area information in a heterogeneous network handover according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a system for obtaining location area information in a heterogeneous network handover according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a second method for obtaining location area information in a heterogeneous network handover according to an embodiment of the present invention
  • FIG. 5 is a flowchart of another method for obtaining location area information in a heterogeneous network handover according to an embodiment of the present invention
  • FIG. 6 is a flowchart of still another method for obtaining location area information in a heterogeneous network handover according to an embodiment of the present invention. detailed description
  • MME Mobility Management Entity
  • SGSN Serving GPRS Support Node
  • HRPD AN High Rate Packet Data Access Node
  • HRPD AN High Rate Packet Data Access Node
  • l ePDG Evolved Packet Data Gateway
  • ASN GW Access Service Network
  • the TAI Track Area Identity
  • TAC Track Area Code
  • RAI Ring Area Identity
  • the area identifier and the like, the TAU procedure (Track Area Update procedure) is also only an example of the UE location area update procedure, and may also be other processes that enable the UE location area update.
  • the location area related information includes information related to the location area, such as a cell ID of the source network, and the like, which can be used as various information for determining the location area information.
  • the Period TA Update Timer is only one instance of the UE periodic location update timer, and may be other timers that implement the UE update location area.
  • a method for obtaining location area information in a heterogeneous network handover according to an embodiment of the present invention is described in detail below with reference to FIG.
  • the method includes:
  • Step 501 The mobility management entity of the target network receives an attach request message sent by the user equipment by using a mobility management entity of the source network.
  • Step 502 When confirming that the location area information is not received, the mobility management entity of the target network constructs an attach accept message according to the attach request message, and sends an attach accept message to the user equipment by the mobility management entity of the source network, where the attach accept message The location area information required by the user equipment is not included.
  • the mobility management entity of the target network may start a timer when sending the attach accept message, and initiate a network exit procedure for the user equipment when it is determined that the user equipment does not access the target network within a predetermined time.
  • Step 503 The mobility management entity of the target network receives the attach complete message sent by the user equipment by using the mobility management entity of the source network, and completes the handover of the user equipment wireless link to the target network according to the attach complete message.
  • Step 504 After completing the switching of the user equipment radio link to the target network, the mobility management entity of the target network acquires the location area information of the user equipment by using the location area update process initiated by the user equipment.
  • the mobility management device and the user equipment of the target network can successfully complete the handover process in the absence of the location area information, and initiate the location area update process after the wireless link of the user equipment is switched to the target network, so that the target network is obtained.
  • a clear understanding of the location area where the user equipment is located, and the user equipment can also obtain the location area information of the user equipment, thereby achieving smooth handover and maintaining the state of the user equipment in the target network.
  • the embodiment of the present invention provides a method for obtaining the location information of the UE, which is shown in FIG.
  • the UE accesses the non-3GPP network and works in a non-3GPP network, for example, for related service access.
  • the method of acquiring the location area information as shown in Fig. 1 can be employed.
  • the HRPD AN is a mobility management entity in a non-3GPP network
  • ⁇ E is a mobility management entity in a 3GPP network
  • the non-3GPP network is a source network
  • the 3GPP network is a target network.
  • the method includes:
  • Step 101 The UE sends a network attach request message to the HRPD AN to request access to the target network.
  • the UE After receiving the notification of the HRPD AN to initiate the handover, the UE constructs an attach request message according to the decision to initiate the handover, and sends an air interface message to the HRPD AN.
  • the air interface message includes an attach request message to request access to the target network.
  • the decision to initiate the handover may be initiated by the HRPD AN or by the UE.
  • the HRPD AN determines, according to the data reported by the UE and the local policy, that the UE needs to perform network handover, decides to initiate a handover from the source network to the target network, and notifies the UE to initiate a network handover request.
  • the UE decides to initiate a handover from the source network to the target network based on the collected information.
  • the collected information includes, for example, signal strength, interference information, and the like of the own cell and the neighboring cell.
  • Step 102 The HRPD AN forwards the attach request message of the UE to the MME.
  • the HRPD AN may perform forwarding of the UE attach request message by encapsulating the received UE's attach request message in a "Direct Transfer" message and sending it to the ⁇ E.
  • the operation of the forwarding is, for example, transparent transmission.
  • HRPD AN Other messages, such as current UE communication interface ID and UE capabilities, may also be encapsulated in the Direct Transfer message.
  • the current UE communication interface ID and UE capability information are used to indicate ⁇ E, the communication interface between ⁇ E and HRPD AN of the current UE, and the capability of the UE requesting access.
  • step 103 ⁇ E sends an attach accept message to the HRPD AN.
  • the MME After receiving the Direct Transfer sent by the HRPD AN, the MME parses the Direct Transfer message. When it is determined that the TAI parameter of the UE is not included in the Direct Transfer message, the attach accept message is constructed according to the attach request message carried in the Direct Transfer message, and the attach accept message is sent to the HRPD AN to prepare to accept the UE access. Target network.
  • the attach accept message does not include a TAI list parameter.
  • the Period Accept message does not generally include the Period TA Update Timer parameter, which is not described in the following embodiments.
  • the MME may also encapsulate other messages in the Direct Transfer message, such as information such as a communication interface ID and a bearer setup request.
  • the communication interface ID and bearer setup request information are used to indicate the communication interface used by the HRPD AN, and to prepare to establish a bearer.
  • Step 104 The HRPD AN transparently transmits the attach accept message to the UE.
  • the HRPD AN sends the attach accept message to the UE by encapsulating the attach accept message in the air interface message, and completes the transparent transmission of the accept message.
  • the HRPD AN may further encapsulate a bearer setup request in the air interface message to complete transparent transmission of the bearer request information.
  • Step 105 The UE sends an attach complete message to the HRPD AN.
  • the UE constructs an attach complete message according to the attached accept message in the air interface message, according to the received air interface message, when it is confirmed that the air interface message does not contain the TAI list parameter.
  • the attach complete message is encapsulated in an air interface message and sent to the HRPD AN.
  • the air interface message may further include bearer setup response information to finally establish a bearer.
  • Step 106 The HRPD AN transparently transmits the attach complete message.
  • the HRPD AN After receiving the attach complete message sent by the UE, the HRPD AN encapsulates the message in the Direct Transfer message, sends it to the ⁇ E, and completes the transparent transmission of the attach complete message.
  • the HRPD AN may further include a message, such as a current UE communication interface ID and a bearer setup response, in the Direct Transfer message, where the current UE communication interface ID and the bearer setup response are used to indicate that the UE uses the S101 interface and the completed bearer established for the current UE.
  • the ⁇ E After receiving the attach complete message, the ⁇ E completes the current UE radio link handover to the target network according to the general operation such as the information exchange with the core network through the information.
  • Step 107 The UE initiates a location area update process. After the radio link of the UE is switched to the target network, the network connection of the UE to the target network has been established, and the UE may initiate a location area update procedure.
  • the location area update information flows by the UE to report the location area information TAI, and according to this, the current TAI parameter of the current UE is obtained.
  • TAI location area information
  • ⁇ E sends a corresponding TAI list parameter to the UE according to the TAI parameter, and may also send a parameter such as a Period TA Update Timer to the UE.
  • the Period TA Update Timer parameter may be sent at the same time as the TAI list parameter is sent, or the Period TA Update Timer parameter may be obtained while obtaining the TAI ist parameter, which is not described in the following embodiments.
  • ⁇ E can successfully maintain the state of the UE after the UE switches to the target network, and the UE can periodically update the location area information and perform state maintenance according to the obtained location area information and timer information.
  • the HRPD AN can release resources in the source network for use by UEs of other access source networks.
  • ⁇ E may also initiate a timer while transmitting an attach accept message. If the timer ends, that is, the UE does not switch the radio link to the target network within the specified time, then ⁇ E initiates a network retreat procedure for the UE. Through the network retreat process, ⁇ E can clear the information of the UE in the target network and release the resources allocated to the UE, thereby optimizing network performance and reducing redundancy.
  • the ⁇ E when the acknowledgment request message does not include the TAI parameter of the UE, the ⁇ E can normally complete the subsequent handover procedure and send an attach accept message, but the attach accept message does not include the TAI list and the Period TA Update.
  • the timer parameter at the same time, when the UE confirms that the received attach accept message does not contain the TAI list parameter, the subsequent handover process can be completed normally, and the attach complete message is sent. Therefore, the handover process can be successfully completed. And, after the radio link of the UE is switched to the target network, the location area update procedure is initiated by the UE.
  • ⁇ E learns the TAI parameter of the UE, and the UE obtains the TAI ist and Period TA Update Timer in the target network, so that the target network clearly knows the location and state of the UE, and the UE can periodically update its Location and status, to achieve normal maintenance of the UE's status and location. Therefore, the UE can also successfully switch to the target network.
  • the ⁇ E in the above embodiment of the present invention includes a processing module and a transceiver module.
  • the transceiver module is configured to receive information sent by other devices and send information to other devices, including receiving an attach request and an attach complete message sent by the UE through the HRPD AN, and sending an attach accept message to the UE by using the HRPD AN.
  • the processing module is configured to: after receiving the attach request message, confirm that the TAI parameter of the UE is not received; construct an attach accept message according to the attach request message, and send an attach accept message by using the sending and receiving module Performing a handover procedure according to the attach completion message; acquiring a TAI parameter of the UE by using a location area update procedure initiated by the UE, and constructing a TAI list and a Period TA Update Timer parameter according to the TAI parameter; and passing the parameter through the transceiver module Send to UE o
  • the processing module is further configured to start a timer when sending an attach accept message to the UE by using the transceiver module, and if the UE does not access the target network within a predetermined time, the processing module is configured to initiate the UE The exit process.
  • the UE in the above embodiment of the present invention includes a processing module and a transceiver module.
  • the transceiver module is configured to receive information sent by other devices and send information to other devices, including receiving an attach accept message sent by the HRPD AN, and sending an attach request and an attach complete message to the HR through the HRPD AN.
  • the processing module is configured to construct an attach request message according to a decision of the HRPD AN to initiate the handover or a decision of the UE to initiate the handover, and send the message through the transceiver module; after the receiving module receives the attach accept message, confirm that the call is not received.
  • an attach complete message is constructed according to the attach accept message, and is sent by the transceiver module; and after the operation of the UE wireless link switching to the target network is completed, the location area update process is initiated.
  • the processing module is configured to configure the attach request message according to the HRPD AN to initiate the handover.
  • the HRPD AN determines, according to the data reported by the UE and the local policy, that the UE needs to perform network handover, and decides to initiate the source network to the target.
  • the handover of the network and notifying the UE to initiate a request for network handover, according to which the UE constructs the attach request message.
  • the processing module is further configured to send an attach request to the HRPD AN by using the transceiver module according to the notification of initiating the handover sent by the HRPD AN.
  • the attach request is forwarded by the HRPD AN to ⁇ E.
  • the HRPD AN decides to initiate a handover from the source network to the target network based on, for example, the UE based on the collected information.
  • the collected information includes, for example, signal strength, interference information, and the like of the local cell and the neighboring cell.
  • the processing module is configured to construct the attach request message according to the decision of the UE to initiate the handover, where the processing module determines to initiate the handover according to the information collected by the signal strength, the interference, and the like, and constructs the attach according to the determining. Request message.
  • the system in the above embodiment includes at least a UE, an MME, and an HRPD AN. among them,
  • the UE is configured to construct an attach request message according to the decision to initiate the handover, and send the attach request message to ⁇ E; receiving an attach accept message sent by ⁇ E; when confirming that the TAI ist and/or Period TA Update Timer parameters are not received, constructing the attach complete message according to the attach accept message, and sending to ⁇ E; After the wireless link is switched to the target network, the location area update process is initiated.
  • the UE is further configured to decide to initiate a handover according to the collected information.
  • ⁇ E is configured to receive an attach request message sent by the UE; when confirming that the TAI parameter of the UE is not received, construct the attach accept message according to the attach request message, and send the attach accept message to the UE;
  • the attachment accept message does not contain the TAI list parameter; the attachment completion message sent by the UE is received, and the UE wireless link is switched to the target network according to a general operation such as the information exchange with the core network.
  • the HRPD AN is configured to transparently transmit a message between the UE and the UE, including forwarding an attach request message of the UE, attaching the completion message to the UE, and forwarding the attach accept message to the UE.
  • the HRPD AN is further configured to decide to initiate a handover according to the information reported by the UE and the local policy, and notify the UE.
  • the UE in the foregoing system may further include a processing module and a transceiver module.
  • the specific implementation of the processing module and the transceiver module refers to the foregoing UE, and details are not described herein again.
  • the foregoing system ⁇ E may further include a processing module and a transceiver module.
  • the specific implementation of the processing module and the transceiver module is referred to the foregoing, and is not described herein again.
  • a method for obtaining location area information in a heterogeneous network handover provided by an embodiment of the present invention is described in detail below with reference to FIG.
  • the method includes:
  • Step 601 The mobility management entity of the target network receives the location area related information of the user equipment sent by the mobility management entity of the source network.
  • the location area related information of the user equipment is: the cell identifier of the source network where the user equipment is located, or the cell identifier of the target network where the user equipment is located, or the location area information of the target network where the user equipment is located.
  • Step 602 After receiving the location area related information of the user equipment, the mobility management entity of the target network acquires the location area information required by the user equipment according to the location area related information.
  • the location information of the user equipment is the cell identifier of the source network where the user equipment is located
  • the mobility management entity of the target network according to the cell identifier of the source network where the user equipment is located, and the corresponding information of the source network cell identifier and the target network location area. Determining the location area information of the user equipment in the target network, and obtaining the location area information required by the user equipment according to the location area information of the user equipment in the target network.
  • the location information of the user equipment is the cell identifier of the target network where the user equipment is located
  • the cell identifier of the target network where the user equipment is located is dynamically obtained by the mobility management entity of the source network through the network, or by the mobility management entity of the source network.
  • the cell identity of the target network where the user equipment is located is determined by the mobility management entity of the source network according to the cell identity of the target network where the user equipment is located, and the target network cell identity and location area
  • Corresponding information is determined, or is determined by the mobility management entity of the source network according to the cell identifier of the source network where the user equipment is located and the corresponding information of the source network cell identifier and the location area
  • the mobility management entity of the target network is based on the target of the user equipment
  • the cell identifier of the network, and the corresponding information of the target network cell identifier and the target network location area determine the location area information of the user equipment in the target network, and obtain the location required by the user equipment according to the location area information of the user equipment in the target network. Area information.
  • the mobility management entity of the source network dynamically obtains the cell identifier of the target network where the user equipment is located through the network, and the dynamic acquisition may be: the terminal sends a measurement report to the source network base station, and the source network base station selects the target network according to the received measurement report. Community.
  • the location area information of the target network where the user equipment is located is determined by the mobility management entity of the source network according to the target network where the user equipment is located or the cell identifier of the source network where the user equipment is located. Determining, wherein the cell identity of the target network is dynamically obtained by the mobility management entity of the source network through the network selection or by the cell identity of the target network in the entity according to the static configuration; the mobility management entity of the target network is in the target according to the user equipment
  • the location area information in the network acquires the location area information required by the user equipment.
  • Step 603 The mobility management entity of the target network sends the location area information required by the user equipment to the user equipment.
  • the mobility management entity in the source network determines the location area related information of the user equipment in the target network, and sends the information to the mobility management entity of the target network, so that the mobility of the target network is achieved.
  • the management entity can obtain the location area information of the user in the target network through the information about the location area, and clearly understand the location area where the user equipment is located. Therefore, the user equipment can successfully complete the handover, and the target network can normally maintain the state of the user equipment.
  • the user equipment can perform location update periodically, which is convenient for the target network to maintain the state of the user equipment.
  • a method of acquiring location area information as shown in FIG. 4 is also provided in an embodiment of the present invention.
  • the method includes: Step 401: The UE constructs an attach request message according to the decision to initiate the handover, and sends the attach request message to the HRPD AN to request access to the target network.
  • the UE After receiving the notification of initiating the handover, the UE constructs an attach request message according to the decision to initiate the handover, and sends an air interface message to the HRPD, where the air interface message includes the attach request message to request access to the target network.
  • the decision to initiate the handover may be made by the HRPD AN according to the data reported by the UE and the local policy, or may be made by the UE according to the collected information.
  • Step 402 The HRPD AN transparently transmits the received attach request message to the MME.
  • the HRPD AN transparently transmits the attach request message to ⁇ 5 by encapsulating the attach request message in a Direct Transfer message.
  • the HRPD AN After receiving the attach request message sent by the UE, the HRPD AN encapsulates the location area related information acquired by the HRPD AN with the attach request message in a Direct Transfer message and sends it to the ⁇ E, so that the target of the UE is known.
  • the location area of the network is transparently transmits the attach request message to ⁇ 5 by encapsulating the attach request message in a Direct Transfer message.
  • the HRPD AN obtains the location area related information may be: the HRPD AN may dynamically obtain the cell ID of the UE access target network through the network, and determine according to the cell ID of the target network and the location area information mapping of the target network.
  • the location area related information acquired by the HRPD AN is the TAI parameter of the UE.
  • ⁇ E can directly know the location area of the UE according to the TAI parameters encapsulated in the Direct Transfer message.
  • the dynamic acquisition through the network selection may be obtained, for example, according to a measurement report of the UE.
  • the HRPD AN may also obtain the cell ID of the UE access target network by statically configuring the target network cell ID in the HRPD AN.
  • the HRPD AN obtains the location area related information may also be: the HRPD AN dynamically obtains the cell ID of the UE access target network through the network selection, or obtains the UE access target network by statically configuring the target network cell ID in the HRPD AN. Cell ID. And the HRPD AN encapsulates the cell ID of the target network as location area related information in a Direct Transfer message, and sends the message to the MME.
  • the HRPD AN obtains the location area related information may also be:
  • the HRPD AN encapsulates the cell ID of the UE in the source network as the location area related information, encapsulates the information in the Direct Transfer message, and sends the message to the ⁇ E.
  • Step 403 The MME sends an attach accept message to the HRPD AN.
  • the ⁇ E After receiving the attach request message, the ⁇ E confirms that the location information of the UE is included in the Direct Transfer message. Thereafter, ⁇ E constructs an attach accept message according to the attach request message, and Obtain the TAI list and Period TA Update Timer parameters that need to be sent to the UE according to the location area related information included in the Direct Transfer message.
  • the MME encapsulates the attach accept message and the parameter into a Direct Transfer message and sends it to the HRPD AN.
  • the MME confirms that the location area related information of the UE included in the Direct Transfer message may be a TAI parameter including the UE in the Direct Transfer message, a cell ID in the target network, or a cell ID in the source network.
  • the MME obtains the TAI list and the Period TA Update Timer parameters that need to be sent to the UE according to the location area related information.
  • the MME may directly obtain the TAI list and the Period TA according to the TAI parameters in the Direct Transfer message. Update Timer parameter.
  • ⁇ E obtains a TAI list and a Period TA Update Timer parameter to be sent to the UE according to the location area related information, and may also be, according to the cell ID of the target network in the Direct Transfer message, and the MME Decoding the cell ID of the target network and the location area information of the target network to determine the TAI parameter of the UE.
  • ⁇ E obtains a TAI list and a Period TA Update Timer parameter according to the TAI parameter.
  • ⁇ E obtains a TAI list and a Period TA Update Timer parameter to be sent to the UE according to the location area related information, and may also be, according to the cell ID of the source network in the Direct Transfer message, and the MME The cell ID of the source network and the location area information mapping of the target network are determined, and the TAI parameters of the UE are determined. Similarly, after obtaining the TAI parameter, ⁇ E acquires the TAI ist and Period TA Update Timer parameters according to the TAI parameter.
  • Step 404 The HRPD AN transparently transmits an attach accept message to the UE.
  • the HRPD AN transparently transmits the attach accept message sent by the E to the UE through the air interface message, and also sends the TAI list and the Period TA Update Timer parameters to the UE through the air interface message.
  • Step 405 The UE sends an attach complete message to the HRPD AN.
  • the UE constructs an attach complete message according to the attach accept message, and encapsulates the attach complete message in the air interface message, and sends the information to the location area of the target network where the target network is located according to the received 1 1 list and the Period TA Update Time parameter sent to the 1113 ⁇ 4 ⁇ 4 And the period in which the location update is initiated.
  • Step 406 The HRPD AN transparently transmits an attach complete message to the MME.
  • the HRPD AN After receiving the attach complete message sent by the UE, the HRPD AN encapsulates the message in the Direct Transfer message and sends it to the ⁇ E to complete the transparent transmission of the attach complete message. At the same time, the HRPD AN may also encapsulate a message such as a current UE communication interface ID and a bearer setup response in the Direct Transfer message, to indicate that the E is used for the current UE to use the S101 interface and complete bearer setup.
  • the current UE radio link is switched to the target network according to the general operation such as the information exchange with the core network through the attachment completion message.
  • the HRPD AN can determine the location area information TAI of the target network where the UE is located. Therefore, the HRPD AN carries the TAI parameter of the UE and sends it to the ⁇ E together with the attachment request sent by the UE. Therefore, ⁇ E clearly knows the location area information of the UE under the target network, and can construct the TAI list and Period TA Update Timer parameters and send the parameters together with the attach accept message to the UE by using a Direct Transfer message. Through the indication of the TAI parameter, the target network clearly knows the location area where the UE is located, and can perform maintenance on the UE normally.
  • the UE clearly knows the location area and the origination location of the target network where the UE is located.
  • the period of the district update process enables normal location updates. Therefore, the UE can successfully switch to the target network.
  • the HRPD AN in the above embodiment, as shown in FIG. 2, includes a processing module and a transceiver module.
  • the transceiver module is configured to receive information sent by other devices and send information to other devices, including receiving an attach request message sent by the UE, receiving an attach accept message sent by the UE, receiving an attach complete message sent by the UE, and sending the attach
  • the request message is sent to ⁇ E
  • the attach accept message is sent to the UE
  • the attach complete message is sent to ⁇ 5.
  • the processing module is configured to determine a cell ID of the UE according to the measurement report of the UE, and determine a location area information TAI where the UE is located according to the mapping between the cell ID and the target network cell ID and the location area; and the TAI parameter is sent by the transceiver module
  • the attach request is sent to the ⁇ 1 ⁇ through the transceiver module.
  • processing module is further configured to determine, according to the information reported by the UE and the local policy, to initiate a handover process, and notify the UE to initiate the handover by using the transceiver module.
  • the ⁇ E in the above embodiment includes a processing module and a transceiver module.
  • the transceiver module is configured to receive information sent by other devices and send information to other devices, including receiving an attach request message and an attach complete message sent by the UE, and sending an attach accept message to the UE.
  • the processing module is configured to construct an attach accept message according to the attach request message; construct a target network location area information TAI list and a Period TA Update Timer parameter required by the UE according to the TAI parameter received together with the attach request message, And sending the foregoing parameter to the UE together with the attach and receive message through the transceiver module; performing general operations such as information interaction with the core network according to the attach complete message, and completing the UE wireless link switching to the target network.
  • the system in the above embodiment includes at least UE, ⁇ E, and HRPD AN.
  • the UE is configured to decide to initiate a handover process according to the collected information; And attaching the request message, and sending the attach request message to the HRE through the HRPD AN; receiving the attach accept message sent by the ⁇ E, and constructing an attach complete message according to the attach accept message, and sending the message to the ⁇ 5.
  • ⁇ E is configured to receive an attach request message sent by the UE; construct an attach accept message according to the attach request message, and send the attach accept message to the UE; construct a TAI list and a Period according to the TAI parameter received together with the attach request a TA Update Timer parameter, and sending the parameter to the UE together with the attach accept message; receiving an attach complete message sent by the UE, and performing a common operation such as performing information interaction with the core network according to the attach complete message, completing the current UE The wireless link switches to the target network.
  • the HRPD AN is configured to initiate a handover procedure according to the information reported by the UE and the local policy, and notify the UE to start the handover process.
  • the transparent transmission of the message between the UE and the UE includes the transparently transmitting the UE's attach request message and the attach complete message to the UE.
  • the E and the transparent transmission E accept the message to the UE; determine the location area information TAI of the target network where the UE is located, and send the TAI parameter together with the attach request to the ⁇ 5.
  • the HRPD AN is further configured to determine a cell ID of the target network where the UE is located according to the measurement report of the UE, and determine the TAI information of the UE according to the mapping relationship between the cell ID and the cell ID and the target network location area.
  • the non-3GPP network is used as the source network
  • the 3GPP network is used as the target network.
  • the method, the device, and the system in the embodiments of the present invention may also be used to use the 3GPP network as the source network, and the non-3GPP network as the source network. Switching of the target network.
  • the device, and the system for obtaining the location area information from the 3GPP network to the non-3GPP network reference may be made to the foregoing embodiment, and details are not described herein.

Description

一种异构网络切换中获取位置区信息的方法、 装置和系统 本申请要求于 2008 年 08 月 15 日提交中国专利局, 申请号为 200810142461. 7, 发明名称为 "一种异构网络切换中获取位置区信息的方法、 装置和系统" 的中国专利申请的优先权, 其全部内容通过引用结合在本申请 中。 技术领域
本发明涉及移动通信技术, 特别涉及一种异构网络切换中获取位置区信 息的方法、 装置和系统。 背景技术
在传统的无线通信网络中, 由于无线通信系统频率资源有限、 传输环境 恶劣等因素, 接入网无法提供高的接入速率。 随着宽带无线技术的发展, 宽 带无线接入网的出现弥补了传统无线通信网络中的缺点, 能够支持高速率的 接入业务, 很大程度上提高了无线通信的接入能力。 宽带无线接入网属于非
3GPP (3rd Generation Partnership Project , 第三代合作伙伴项目) 网络。
宽带无线接入网的应用, 在带来高速接入的同时, 也带来了用户需要在 不同的接入网之间进行移动切换的问题。
在用户设备 (User Equipment , UE) 于 3GPP和非 3GPP的接入网之间进 行切换时, 顺利切换需要目标网络掌握 UE的各种参数, 包括 UE的状态, 以 及 UE在目标网络中的位置区等。 并且, 目标网络只有在掌握 UE的上述参数 后, 才能在 UE完成整个切换过程接入目标网络后, 对 UE进行状态维护, 保 证 UE正常使用通信网络。
在实现本发明的过程中, 发明人发现: 在现有的异构网络之间, 例如 UE 在 3GPP和非 3GPP网络间切换的过程中,目标网络无法获知 UE的位置区信息。 因此, UE也无法获知完成切换所需的本 UE所在目标网络的位置区信息。从而 可能导致 UE无法切换进入目标网络, 或者使得 UE进入目标网络后, 目标网 络无法对 UE进行状态维护等管理操作。 发明内容
有鉴于此, 本发明各实施方式的主要目的在于提供一种异构网络切换中 获取位置区信息的方法, 使得目标网络可以获知用户设备在目标网络中的位 置区信息。
本发明的各实施方式同时还提供了一种异构网络切换中获取位置区信息 的装置及系统。
为了实现上述目的, 本发明各实施例提供了以下技术解决方案: 本发明实施例的一种异构网络切换中获取位置区信息的方法, 该方法包 括:
目标网络的移动性管理实体接收由源网络的移动性管理实体发送的用户 设备的位置区相关信息;
目标网络的移动性管理实体在确认接收到所述用户设备的位置区相关信 息时, 根据所述位置区相关信息获取用户设备所需的位置区信息; 以及
目标网络的移动性管理实体将所述用户设备所需的位置区信息发送至所 述用户设备。
本发明实施例的一种移动性管理实体, 包括处理模块和收发模块, 其中, 所述收发模块用于将用户设备的位置区相关信息发送至目标网络的移动 性管理实体, 以及将用户设备所需的位置区信息发送至用户设备;
所述处理模块用于获取所述用户设备的位置区相关信息, 并通过所述收 发模块, 将所述位置区相关信息发送至所述目标网络的移动性管理实体。
本发明实施例的另一种移动性管理实体, 包括处理模块和收发模块, 其 中,
所述处理模块用于确认所述收发模块接收到所述用户设备的位置区相关 信息; 根据所述位置区相关信息获取用户设备所需的目标网络中的位置区信 息; 以及通过所述收发模块将所述用户设备所需的目标网络中的位置区信息 发送至用户设备。
本发明实施例的一种异构网络切换中获取位置区信息的系统, 包括用户 设备、 源网络的移动性管理实体和目标网络的移动性管理实体, 其中,
所述目标网络的移动性管理实体用于,
接收源网络的移动性管理实体发送的用户设备的位置区相关信息; 在确认接收到所述用户设备的位置区相关信息时, 根据所述位置区相关 信息获取用户设备所需的位置区信息; 以及
将所述用户设备所需的位置区信息发送至所述用户设备。 本发明实施例的另一种异构网络切换中获取位置区信息的系统, 包括用 户设备、 源网络的移动性管理实体和目标网络的移动性管理实体, 其中, 所述源网络的移动性管理实体用于, 获取所述用户设备的位置区相关信 息, 并将所述用户设备的位置区相关信息发送至目标网络的移动性管理实体。
本发明实施例的另一种异构网络切换中获取位置区信息的方法, 该方法 包括:
目标网络的移动性管理实体接收用户设备通过源网络的移动性管理实体 发送的附着请求消息;
目标网络的移动性管理实体在确认未接收到位置区信息时, 根据所述附 着请求消息构造附着接受消息, 并通过所述源网络的移动性管理实体发送所 述附着接受消息至所述用户设备, 其中所述附着接受消息中不含有用户设备 所需的位置区信息;
目标网络的移动性管理实体接收所述用户设备通过所述源网络的移动性 管理实体发送的附着完成消息, 并根据所述附着完成消息完成所述用户设备 无线链路切换至目标网络; 以及
目标网络的移动性管理实体在完成所述用户设备无线链路切换至目标网 络后, 通过所述用户设备发起的位置区更新流程获取所述用户设备的位置区 信息。
本发明实施例的另一种移动性管理实体, 包括处理模块和收发模块, 其 中,
所述收发模块用于接收用户设备发送的附着请求消息和附着完成消息, 以及向用户设备发送附着接受消息;
所述处理模块用于,
在确定未接收到所述用户设备的位置区信息时, 根据所述附着请求消息 构造附着接受消息, 并通过所述收发模块发送所述附着接受消息, 其中所述 附着接受消息中不含有用户设备所需的位置区信息;
跟据所述附着完成消息, 完成用户设备的无线链路切换至目标网络; 以及通过所述用户设备发起的位置区更新流程获取所述用户设备的位置 区信息。
本发明实施例的一种用户设备, 包括收发模块和处理模块, 其中, 所述收发模块用于接收目标网络的移动性管理实体发送的附着接受消 息; 以及向目标网络的移动性管理实体发送附着请求消息和附着完成消息; 所述处理模块用于, 根据发起切换的决定构造附着请求消息; 在确认未 接收到本用户设备所需的位置区信息时, 根据所述附着接受消息构造附着完 成消息, 并通过所述收发模块发送所述附着完成消息; 以及在本用户设备的 无线链路切换至目标网络后, 发起位置区更新流程。
本发明实施例的另一种异构网络切换中获取位置区信息的系统, 包括目 标网络的移动性管理实体、 源网络的移动性管理实体和用户设备, 其中, 目标网络的移动性管理实体用于,
接收用户设备通过源网络的移动性管理实体发送的附着请求消息; 在确认未接收到用户设备的位置区信息时, 根据所述附着请求消息构造 附着接受消息, 并通过所述源网络的移动性管理实体发送所述附着接受消息 至所述用户设备, 其中所述附着接受消息不含有用户设备所需的位置区信息; 接收所述用户设备通过所述源网络的移动性管理实体发送的附着完成消 息;
根据所述附着完成消息完成所述用户设备无线链路切换至目标网络; 以 及
通过所述用户设备发起的位置区更新流程获取用户设备的位置区信息。 本发明实施例的另一种异构网络切换中获取位置区信息的系统, 包括目 标网络的移动性管理实体、 源网络的移动性管理实体和用户设备, 其中, 所述用户设备用于,
根据发起切换的决定构造附着请求消息;
通过所述源网络的移动性管理实体将所述附着请求消息发送至目标网络 的移动性管理实体;
接收目标网络的移动性管理实体通过源网络的移动性管理实体发送的附 着接受消息;
在确认未接收到所述用户设备在目标网络中的位置区信息时, 根据所述 附着接受消息构造附着完成消息;
通过所述源网络的移动性管理实体将所述附着完成消息发送至目标网络 的移动性管理实体;
以及发起位置更新流程。
本发明实施例提供了一种异构网络切换中获取位置区信息的方法、 装置 及系统, 各实施例通过在切换过程中由源网络中的移动性管理实体确定用户 设备在目标网络中的位置区相关信息, 并将该信息发送至目标网络的移动性 管理实体, 使得目标网络的移动性管理实体通过所述位置区相关信息可以获 取用户在目标网络中的位置区信息, 明确的了解用户设备所在的位置区。 因 此用户设备能够顺利完成切换, 并且目标网络能够正常维护用户设备的状态。 同时通过目标网络的移动性管理实体发送的位置区信息, 用户设备能够正常 的定期进行位置更新, 便于目标网络维护用户设备的状态。 此外, 本发明实 施例还提供了另一种无线网络中的切换方法、 装置及系统, 各实施例通过目 标网络的移动性管理设备和用户设备在缺少位置区信息的情况下可以顺利完 成切换过程, 且在用户设备的无线链路切换至目标网络后发起位置区更新流 程, 使得目标网络能够明确了解用户设备所在的位置区, 用户设备也能够获 得其所在位置区信息, 从而实现切换的顺利进行, 以及目标网络正常维护用 户设备的状态。 附图说明
图 1是本发明实施例中实现异构网络切换中获取位置区信息的第一种方 法的流程图;
图 2是本发明实施例中实现异构网络切换中获取位置区信息的装置的结 构示意图;
图 3是本发明实施例中实现异构网络切换中获取位置区信息的系统的示 意图;
图 4是本发明实施例中实现异构网络切换中获取位置区信息的第二种方 法的流程图;
图 5是本发明实施例中实现异构网络切换中获取位置区信息的另一种方 法的流程图;
图 6是本发明实施例中实现异构网络切换中获取位置区信息的再一种方 法的流程图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本发 明作进一步地详细描述。 本发明提出了多个实施例, 下面分别对这些实施例进行详细介绍。 需要 说明的是, 本发明各实施例中提到的 MME (Mobi le Management Entity, 移动 性管理实体)只是 3GPP网络中移动性管理实体的一个示例, 还可以是其它的 3GPP网络中的移动性管理实体, 例如为 SGSN (Serving GPRS Support Node, 服务 GPRS支持节点)。
HRPD AN (High Rate Packet Data Access Node, 高速分组数据网接入 点) 只是非 3GPP网络中移动性管理实体的一个示例, 还可以是其它非 3GPP 网络中的移动性管理实体, 例如为 WiMAX (Worldwide Interoperabi l ity for Microwave Access ,微波接入全球互通)中的 ASN GW (Access Service Network 工业无线局域网) 中的 ePDG (Evolved Packet Data Gateway, 演进分组数据 网关)。
TAI (Track Area Identity, 跟踪域标识) 只是 UE位置区信息的一个示 例, 还可以是其它指示 UE位置区的信息, 例如为 TAC (Track Area Code, 跟 踪域码)、 RAI (Routing Area Identity,路由区标识)等, 同样 TAU procedure (Track Area Update procedure, 跟踪域更新流程) 也只是 UE位置区更新 流程的一个实例, 还可以是其它能够实现 UE位置区更新的流程。
位置区相关信息, 包括与位置区有关的信息, 例如为源网络的小区 ID等 能够作为确定位置区信息根据的各种信息。
Period TA Update Timer (周期性跟踪域更新定时器) 只是 UE周期性位 置更新定时器的一个实例, 还可以是其它实现 UE更新位置区的定时器。
下面结合附图 5详细描述本发明实施例提供的一种异构网络切换中获取 位置区信息的方法。 该方法包括:
步骤 501, 目标网络的移动性管理实体接收用户设备通过源网络的移动性 管理实体发送的附着请求消息。
步骤 502, 目标网络的移动性管理实体在确认未接收到位置区信息时, 根 据附着请求消息构造附着接受消息, 并通过源网络的移动性管理实体发送附 着接受消息至用户设备, 其中附着接受消息中不含有用户设备所需的位置区 信息。 目标网络的移动性管理实体可以在发送附着接受消息时启动定时器, 并在确定用户设备于规定时间内没有接入目标网络时, 发起针对用户设备的 退网流程。 步骤 503,目标网络的移动性管理实体接收用户设备通过源网络的移动性 管理实体发送的附着完成消息, 并根据附着完成消息完成用户设备无线链路 切换至目标网络。
步骤 504, 目标网络的移动性管理实体在完成用户设备无线链路切换至目 标网络后, 通过用户设备发起的位置区更新流程获取用户设备的位置区信息。
本实施例通过目标网络的移动性管理设备和用户设备在缺少位置区信息 的情况下可以顺利完成切换过程, 且在用户设备的无线链路切换至目标网络 后发起位置区更新流程, 使得目标网络能够明确了解用户设备所在的位置区, 用户设备也能够获得其所在位置区信息, 从而实现切换的顺利进行, 以及目 标网络正常维护用户设备的状态。
为了解决 UE在无线接入网络间切换时, 目标网络无法获知 UE位置区信 息的问题, 本发明的实施例提供了一种获知 UE位置区信息的方法, 该方法具 体如附图 1所示。
UE接入到非 3GPP网络中, 并且在非 3GPP网络中进行工作, 例如进行相 关的业务访问。 在终端需要从非 3GPP的网络中切换到 3GPP的网络中时, 可 以采用如附图 1所示的获取位置区信息的方法。在附图 1所示的方法中, HRPD AN为非 3GPP网络中的移动性管理实体, 匪 E为 3GPP网络中的移动性管理实 体, 且非 3GPP网络为源网络, 3GPP网络为目标网络。 所述方法包括:
步骤 101, UE向 HRPD AN发送网络附着请求消息, 请求接入目标网络。
UE在收到 HRPD AN的所述发起切换的通知后, 根据所述发起切换的决定 构造附着请求消息, 并向 HRPD AN发送空口消息。 所述空口消息中包括附着 请求消息, 以请求接入目标网络。
其中所述发起切换的决定可以由 HRPD AN发起, 也可以由 UE发起。 例如 HRPD AN根据 UE上报的数据和本地策略, 确定 UE需要进行网络切换时, 决定 发起从源网络到目标网络的切换, 并通知 UE发起网络切换的请求。 例如 UE 根据收集到的信息, 决定发起从源网络到目标网络的切换。 所述收集到的信 息例如包括本小区和邻小区的信号强度、 干扰信息等。
步骤 102, HRPD AN将 UE的附着请求消息转发给 MME。
HRPD AN可以通过将所述收到的 UE的附着请求消息封装在 "Direct Transfer (直接传输)"消息中发送给匪 E, 完成 UE附着请求消息的转发。 其 中所述转发的操作例如为透传, 以下均以透传为例进行描述。 同时, HRPD AN 还可以在 Direct Transfer消息中封装其它消息, 例如当前 UE通信接口 ID 和 UE能力等信息。当前 UE通信接口 ID和 UE能力信息用以指示匪 E, 针对当 前 UE的匪 E与 HRPD AN之间的通信接口和请求接入的 UE的能力。
步骤 103, 匪 E向 HRPD AN发送附着接受消息。
在接收到 HRPD AN发送的 Direct Transfer后, MME对 Direct Transfer 消息进行解析。在确定 Direct Transfer消息中不含有所述 UE的 TAI参数时, 根据 Direct Transfer消息中携带的附着请求消息构造附着接受消息, 并发 送所述附着接受消息给 HRPD AN, 以准备接受所述 UE接入目标网络。 其中, 所述附着接受消息中不含有 TAI list参数。 通常情况下, 在未接收到 TAI参 数的情况下, 所述附着接受消息中一般也不含有 Period TA Update Timer参 数, 下述实施例中不再赘述。 同时, MME还可以在 Direct Transfer消息中封 装其它消息, 例如为通信接口 ID和承载建立请求等信息。 所述通信接口 ID 和承载建立请求信息用以指示 HRPD AN,匪 E使用的通信接口和准备建立承载。
步骤 104, HRPD AN透传所述的附着接受消息给 UE。
HRPD AN通过将附着接受消息封装在空口消息中发送给 UE, 完成匪 E附 着接受消息的透传。 除了透传所述的附着接受消息, HRPD AN在所述空口消息 中还可以封装承载建立请求, 完成所述承载请求信息的透传。
步骤 105, UE发送附着完成消息给 HRPD AN。
UE根据接收到的所述空口消息, 在确认该空口消息中不含有 TAI list参 数时, 根据所述空口消息中的附着接受消息, 构造附着完成消息。 并将所述 附着完成消息封装在空口消息中, 发送至 HRPD AN。 同时, 所述空口消息中还 可以包括承载建立响应信息, 以最终建立承载。
步骤 106, HRPD AN透传所述附着完成消息。
HRPD AN接收到 UE发送的附着完成消息后, 将该消息封装在 Direct Transfer消息中, 发送给匪 E, 完成附着完成消息的透传。 同时, HRPD AN还 可以在 Direct Transfer消息中包含当前 UE通信接口 ID和承载建立响应等 消息, 所述当前 UE通信接口 ID和承载建立响应用以指示 UE 针对当前 UE使 用的 S101接口和完成承载建立。 匪 E接收到附着完成消息后, 根据所述附着 完成消息与核心网通过信息交互等通用操作完成当前 UE无线链路切换到目标 网络。
步骤 107, UE发起位置区更新流程。 UE的无线链路切换到目标网络后,已经建立了 UE到目标网络的网络连接, UE可以发起位置区更新流程。通过位置区更新流程 UE上报其所在的位置区信 息 TAI , 据此匪 E获知当前 UE的 TAI参数。 匪 E根据所述 TAI参数, 发送相 应的 TAI list参数给 UE, 同时也可以发送 Period TA Update Timer等参数 给 UE。下述实施例中也可以在发送 TAI list参数的同时发送 Period TA Update Timer参数, 或者在获取 TAI l ist参数的同时获取 Period TA Update Timer 参数, 下述实施例中不再赘述。
通过获知 UE的 TAI参数, 匪 E可以在 UE切换至目标网络后, 顺利维护 UE的状态, UE也可以根据获得的位置区信息以及定时器信息周期性更新位置 区信息和进行状态维护。
在 UE成功接入目标网络后, HRPD AN可以释放源网络中的资源, 供其它 接入源网络的 UE使用。
此外,在步骤 104中,匪 E发送附着接受消息的同时,还可以启动定时器。 如果定时器结束, 即规定时间内, UE没有将无线链路切换到目标网络中, 则 匪 E发起针对所述 UE的退网流程。 通过退网流程, 匪 E可以清除目标网络中 所述 UE的信息, 并释放分配给该 UE的资源, 从而优化网络性能, 减少冗余。
在上述实施例中, 匪 E在确认附着请求消息中不含有 UE的 TAI参数的情 况下, 可以正常完成后续切换流程, 发送附着接受消息, 但该附着接受消息 中不含有 TAI list和 Period TA Update Timer参数; 同时 UE在确认接收到 的附着接受消息中不含有 TAI list参数时, 可以正常完成后续切换流程, 发 送附着完成消息, 因此, 切换流程可以顺利完成。 并且, 在 UE的无线链路切 换到目标网络后, 由 UE发起位置区更新流程。通过所述位置区更新流程,匪 E 获知 UE的 TAI参数, 且 UE获得目标网络中的 TAI l ist和 Period TA Update Timer, 从而目标网络清楚地了解 UE的位置和状态, 且 UE可以定期更新其位 置和状态, 实现网络对 UE状态、 位置的正常维护。 因此, UE也就能够成功的 切换至目标网络。
本发明上述实施例中的匪 E如附图 2所示, 包括处理模块和收发模块。 其中, 所述收发模块用于接收其它装置发送的信息和向其它装置发送信息, 包括接收 UE通过 HRPD AN发送的附着请求和附着完成消息,以及通过 HRPD AN 向 UE发送附着接受消息。 所述处理模块用于在所述接收模块接收到所述附着请求消息后, 确认未 接收到 UE的 TAI参数; 根据所述附着请求消息构造附着接受消息, 并通过所 述收发模块发送附着接受消息; 跟据所述附着完成消息完成切换过程; 通过 UE发起的位置区更新流程获取 UE的 TAI参数,并根据 TAI参数构造 TAI list 和 Period TA Update Timer参数; 以及将所述参数通过所述收发模块发送给 UE o
此外, 所述处理模块还用于在通过收发模块向 UE发送附着接受消息时, 启动定时器, 如果在规定的时间内, UE没有接入目标网络, 则所述处理模块 用于发起针对该 UE的退网流程。
本发明上述实施例中的 UE如附图 2所示, 包括处理模块和收发模块。 其 中, 所述收发模块用于接收其它装置发送的信息和向其它装置发送信息, 包 括接收匪 E通过 HRPD AN发送的附着接受消息, 以及通过 HRPD AN向匪 E发 送附着请求和附着完成消息。
所述处理模块用于根据 HRPD AN发起切换的决定或者本 UE发起切换的决 定构造附着请求消息, 并通过所述收发模块发送; 在所述接收模块接收到所 述附着接受消息后, 确认未接收到 TAI list参数时, 根据所述附着接受消息 构造附着完成消息, 并通过所述收发模块发送; 以及在匪 E完成 UE无线链路 切换至目标网络的操作后, 发起位置区更新流程。
其中, 所述处理模块用于根据 HRPD AN发起切换的决定构造所述附着请 求消息具体为, HRPD AN根据 UE上报的数据和本地策略, 确定 UE需要进行网 络切换时, 决定发起从源网络到目标网络的切换, 并通知 UE发起网络切换的 请求, UE据此构造所述附着请求消息。 此外, 所述处理模块还用于根据所述 HRPD AN发送的发起切换的通知,通过所述收发模块向 HRPD AN发送附着请求。 所述附着请求由 HRPD AN转发至匪E。 例如 HRPD AN根据例如 UE根据收集到 的信息, 决定发起从源网络到目标网络的切换。 所述收集到的信息例如包括 本小区和邻小区的信号强度、 干扰信息等。
所述处理模块用于根据本 UE发起切换的决定构造所述附着请求消息具体 为, 所述处理模块根据信号强度、 干扰等收集到的信息, 决定发起切换, 并 根据所述决定构造所述附着请求消息。
上述实施例中的系统如附图 3所示, 至少包括 UE、 MME和 HRPD AN。其中,
UE用于根据发起切换的决定构造附着请求消息, 并发送所述附着请求消息给 匪 E; 接收匪 E发送的附着接受消息; 在确认未收到 TAI l ist和 /或 Period TA Update Timer参数时, 根据所述附着接受消息构造所述附着完成消息, 并发 送至匪 E; 以及在无线链路切换至目标网络后, 发起位置区更新流程。
UE还用于根据收集的信息决定发起切换。
匪 E用于接收 UE发送的附着请求消息;在确认未接收到所述 UE的 TAI参 数时, 根据所述附着请求消息构造所述附着接受消息, 并发送所述附着接受 消息至 UE; 所述附着接受消息中不含有 TAI list参数; 接收 UE发送的附着 完成消息, 并根据所述附着完成消息与核心网进行信息交互等通用操作完成 UE无线链路切换至目标网络。
HRPD AN用于在匪 E和 UE之间进行消息的透传, 包括转发 UE的附着请求 消息、 附着完成消息给匪 E和转发匪 E的附着接受消息给 UE。
HRPD AN还用于根据 UE上报的信息和本地策略决定发起切换,并通知 UE。 上述系统中的 UE如前所述, 还可以包括处理模块和收发模块, 其中处理 模块与收发模块的具体实现参考前述 UE, 在此不再赘述。
上述系统中的匪 E如前所述, 还可以包括处理模块和收发模块, 其中处 理模块与收发模块的具体实现参考前述匪 E, 在此不再赘述。
下面结合附图 6详细描述本发明实施例提供的异构网络切换中获取位置 区信息的方法。 该方法包括:
步骤 601, 目标网络的移动性管理实体接收由源网络的移动性管理实体发 送的用户设备的位置区相关信息。
用户设备的位置区相关信息为: 用户设备所在源网络的小区标识、 或者 用户设备所在目标网络的小区标识、 或者用户设备所在目标网络的位置区信 息。
步骤 602, 目标网络的移动性管理实体在接收到用户设备的位置区相关信 息后, 根据位置区相关信息获取用户设备所需的位置区信息。
在用户设备的位置区相关信息为用户设备所在源网络的小区标识时, 目 标网络的移动性管理实体根据用户设备所在的源网络的小区标识, 以及源网 络小区标识与目标网络位置区的对应信息, 确定用户设备在目标网络中的位 置区信息, 并根据用户设备在目标网络中的位置区信息, 获取用户设备所需 的位置区信息。 在用户设备的位置区相关信息为用户设备所在目标网络的小区标识时, 用户设备所在目标网络的小区标识由源网络的移动性管理实体通过网络选择 动态获取, 或者由源网络的移动性管理实体根据静态配置在本实体中的目标 网络的小区标识获取; 用户设备所在目标网络的小区标识由源网络的移动性 管理实体根据用户设备所在的目标网络的小区标识, 和目标网络小区标识与 位置区的对应信息确定, 或者由源网络的移动性管理实体根据用户设备所在 的源网络的小区标识和源网络小区标识与位置区的对应信息确定; 目标网络 的移动性管理实体根据用户设备所在的目标网络的小区标识, 以及目标网络 小区标识与目标网络位置区的对应信息, 确定用户设备在目标网络中的位置 区信息, 根据用户设备在目标网络中的位置区信息, 获取用户设备所需的位 置区信息。
其中, 源网络的移动性管理实体通过网络选择动态获取用户设备所在目 标网络的小区标识中, 动态获取可以为, 终端发送测量报告给源网络基站, 源网络基站根据收到的测量报告选择目标网络小区。
在用户设备的位置区相关信息为用户设备所在目标网络的位置区信息 时, 用户设备所在目标网络的位置区信息由源网络的移动性管理实体根据用 户设备所在目标网络或所在源网络的小区标识确定, 其中, 目标网络的小区 标识由源网络的移动性管理实体通过网络选择动态获取或者根据静态配置在 本实体中的目标网络的小区标识获取; 目标网络的移动性管理实体根据用户 设备在目标网络中的位置区信息获取用户设备所需的位置区信息。
步骤 603, 目标网络的移动性管理实体将用户设备所需的位置区信息发送 至用户设备。
本实施例通过在切换过程中由源网络中的移动性管理实体确定用户设备 在目标网络中的位置区相关信息, 并将该信息发送至目标网络的移动性管理 实体, 使得目标网络的移动性管理实体通过位置区相关信息可以获取用户在 目标网络中的位置区信息, 明确的了解用户设备所在的位置区。 因此用户设 备能够顺利完成切换, 并且目标网络能够正常维护用户设备的状态。 同时通 过目标网络的移动性管理实体发送的位置区信息, 用户设备能够正常的定期 进行位置更新, 便于目标网络维护用户设备的状态。
本发明的实施例中还提供了如附图 4所示的获取位置区信息的方法。 该 方法包括: 步骤 401, UE根据发起切换的决定, 构造附着请求消息, 并向 HRPD AN 发送该附着请求消息, 以请求接入目标网络。
UE在收到发起切换的通知后, 根据所述发起切换的决定构造附着请求消 息, 并向 HRPD发送空口消息, 其中所述空口消息中包括所述附着请求消息, 以请求接入目标网络。
所述发起切换的决定可以是由 HRPD AN根据 UE上报的数据和本地策略作 出的, 也可以是由 UE根据收集的信息作出的。
步骤 402, HRPD AN将接收到的附着请求消息透传至 MME。
HRPD AN通过将所述附着请求消息封装在 Direct Transfer消息中, 透传 所述附着请求消息至匪5。 在接收到 UE发送的附着请求消息后, HRPD AN将 由 HRPD AN获取的位置区相关信息与所述附着请求消息一起封装在 Direct Transfer消息中发送给匪 E,以便匪 E获知所述 UE所在的目标网络的位置区。
在步骤 402中, HRPD AN获取位置区相关信息可以是: HRPD AN可以通过 网络选择动态获取 UE接入目标网络的小区 ID, 并根据所述目标网络的小区 ID和目标网络的位置区信息映射确定 UE所在的目标网络的对应位置区信息 TAI o 根据上述方法, HRPD AN获取的位置区相关信息为 UE的 TAI参数。 匪 E 可以直接根据封装在 Direct Transfer消息中的 TAI参数获知 UE的位置区。 其中通过网络选择动态获取例如可以为根据 UE的测量报告获取。
根据上述 HRPD AN获取位置区相关信息的方法, HRPD AN还可以通过静态 配置在 HRPD AN中的目标网络小区 ID获取 UE接入目标网络的小区 ID。
在步骤 402中, HRPD AN获取位置区相关信息还可以是: HRPD AN通过网 络选择动态获取 UE接入目标网络的小区 ID或者通过静态配置在 HRPD AN中 的目标网络小区 ID获取 UE接入目标网络的小区 ID。 并且 HRPD AN将所述目 标网络的小区 ID作为位置区相关信息封装在 Direct Transfer消息中, 发送 至 MME。
在步骤 402中, HRPD AN获取位置区相关信息还可以是: HRPD AN将 UE 在源网络中的小区 ID作为位置区相关信息,封装在 Direct Transfer消息中, 并发送该消息至匪 E。
步骤 403, MME向 HRPD AN发送附着接受消息。
接收到所述附着请求消息后, 匪 E确认 Direct Transfer消息中包括 UE 的位置区相关信息。 之后, 匪 E根据所述附着请求消息构造附着接受消息, 并 根据 Direct Transfer消息中包含的位置区相关信息, 获取需要发送给 UE的 TAI list和 Period TA Update Timer参数。 MME将所述附着接受消息和所述 参数封装到 Direct Transfer消息中, 发送给 HRPD AN。
在步骤 403中, MME确认 Direct Transfer消息中包括 UE的位置区相关 信息可以是确认 Direct Transfer消息中包括 UE的 TAI参数、 目标网络中的 小区 ID或者是源网络中的小区 ID。
在步骤 403中,匪 E根据所述位置区相关信息,获取需要发送给 UE的 TAI list禾口 Period TA Update Timer参数, 可以是, MME根据 Direct Transfer 消息中的 TAI参数直接获取 TAI list和 Period TA Update Timer参数。
在步骤 403中,匪 E根据所述位置区相关信息,获取需要发送给 UE的 TAI list禾口 Period TA Update Timer参数, 还可以是, MME根据 Direct Transfer 消息中的目标网络的小区 ID,以及所述目标网络的小区 ID和目标网络的位置 区信息映射, 确定所述 UE的 TAI参数。 在获取所述 TAI参数后, 匪 E根据所 述 TAI参数获取 TAI list和 Period TA Update Timer参数。
在步骤 403中,匪 E根据所述位置区相关信息,获取需要发送给 UE的 TAI list禾口 Period TA Update Timer参数, 还可以是, MME根据 Direct Transfer 消息中的源网络的小区 ID,以及所述源网络的小区 ID和目标网络的位置区信 息映射, 确定所述 UE的 TAI参数。 同样, 在获取所述 TAI参数后, 匪 E根据 所述 TAI参数获取 TAI l ist和 Period TA Update Timer参数。
步骤 404, HRPD AN向 UE透传附着接受消息。
HRPD AN通过空口消息, 将匪 E发送的附着接受消息透传至 UE, 同时也 将 TAI list和 Period TA Update Timer参数通过空口消息发送给 UE。
步骤 405, UE向 HRPD AN发送附着完成消息。
UE根据所述附着接受消息构造附着完成消息, 并将附着完成消息封装在 空口消息中,发送给 111¾¾ 1¾根据接收到的1 1 list以及 Period TA Update Time参数, 获知自己所在的目标网络的位置区以及发起位置更新的周期。
步骤 406, HRPD AN透传附着完成消息至 MME。
HRPD AN接收到 UE发送的附着完成消息后, 将该消息封装在 Direct Transfer消息中, 发送给匪 E, 完成附着完成消息的透传。 同时, HRPD AN还 可以在 Direct Transfer消息中封装当前 UE通信接口 ID和承载建立响应等 消息, 用以指示匪 E针对当前 UE使用的 S101接口和完成承载建立。匪 E接收 到附着完成消息后, 根据所述附着完成消息与核心网通过信息交互等通用操 作完成当前 UE无线链路切换到目标网络。
在上述实施例中, HRPD AN能够确定 UE所在的目标网络的位置区信息 TAI, 所以 HRPD AN在透传 UE发送的附着请求的同时携带了 UE的 TAI参数一起发 送给匪 E。 所以, 匪 E明确的了解 UE在目标网络下的位置区信息, 可以构造 TAI list和 Period TA Update Timer参数并利用 Direct Transfer消息将所 述参数和所述附着接受消息一起发送给 UE。 通过 TAI参数的指示, 目标网络 清楚的获知 UE所在的位置区, 可以正常对 UE进行维护, 同时通过 TAI list 和 Period TA Update Timer参数, UE清楚的获知自己所在的目标网络的位置 区和发起位置区更新流程的周期, 能够正常地进行位置更新。 因此, UE就能 够成功的切换至目标网络。
上述实施例中的 HRPD AN如附图 2所示, 包括处理模块和收发模块。 其 中所述收发模块用于接收其它装置发送的信息和向其它的装置发送信息, 包 括接收 UE发送的附着请求消息、 接收匪 E发送的附着接受消息、 接收 UE发 送的附着完成消息, 以及发送附着请求消息给匪 E, 发送附着接受消息给 UE、 发送附着完成消息给匪5。
所述处理模块用于根据 UE的测量报告确定 UE所在小区 ID, 并根据小区 ID和目标网络小区 ID与位置区的映射确定 UE所在的位置区信息 TAI ; 通过 收发模块, 将 TAI参数连同所述附着请求通过所述收发模块一起发送至 ^1Ε。
此外所述处理模块还用于根据 UE上报的信息和本地策略决定发起切换过 程, 并通过所述收发模块通知 UE发起切换。
上述实施例中的匪 E如附图 2所示, 包括处理模块和收发模块。 其中所 述收发模块用于接收其它装置发送的信息和向其它的装置发送信息, 包括接 收 UE发送的附着请求消息和附着完成消息, 以及向 UE发送附着接受消息。
所述处理模块用于根据所述附着请求消息构造附着接受消息; 根据与所 述附着请求消息一起接收到的 TAI参数, 构造 UE所需的目标网络位置区信息 TAI list和 Period TA Update Timer参数, 并将上述参数连同所述附着接受 消息通过所述收发模块一起发送给 UE; 根据所述附着完成消息, 与核心网进 行信息交互等通用操作, 完成 UE无线链路切换至目标网络。
上述实施例中的系统, 如附图 3所示, 至少包括 UE、 匪 E和 HRPD AN。 其 中 UE用于根据收集的信息, 决定发起切换过程; 根据所述发起切换的决定构 造附着请求消息, 并通过 HRPD AN发送所述附着请求消息给匪 E; 接收匪 E发 送的附着接受消息,并根据所述附着接受消息构造附着完成消息,发送至匪5。
匪 E用于接收 UE发送的附着请求消息; 根据所述附着请求消息构造附着 接受消息, 并发送所述附着接受消息至 UE; 根据与所述附着请求一起接收的 TAI参数, 构造 TAI list和 Period TA Update Timer参数, 并将所述参数与 所述附着接受消息一起发送给 UE; 接收 UE发送的附着完成消息, 并根据所述 附着完成消息与核心网进行信息交互等通用操作, 完成当前 UE的无线链路切 换至目标网络。
HRPD AN用于根据 UE上报的信息和本地策略决定发起切换过程并通知 UE 开始切换过程; 在匪 E和 UE之间进行消息的透传, 包括透传 UE的附着请求 消息、 附着完成消息给匪 E和透传匪 E的附着接受消息给 UE; 确定 UE所在目 标网络的位置区信息 TAI , 并将 TAI参数和附着请求一起发送给匪5。
HRPD AN还用于根据 UE的测量报告确定 UE所在目标网络的小区 ID, 并 根据小区 ID和小区 ID与目标网络位置区的映射关系确定 UE的 TAI信息。
在上述实施例中, 均以非 3GPP网络为源网络, 3GPP网络为目标网络进行 举例说明, 本发明实施例中的方法、 装置和系统也可以用于以 3GPP网络为源 网络, 非 3GPP网络为目标网络的切换。 从 3GPP网络向非 3GPP网络切换中获 取位置区信息的方法、 装置和系统的具体实现可以参照上述实施例, 在此不 再赘述。
虽然通过参照本发明的某些优选实施方式, 已经对本发明进行了图示和 描述, 但本领域的普通技术人员应该明白, 可以在形式上和细节上对其作各 种改变, 而不偏离本发明的精神和范围。

Claims

权利要求书
1. 一种异构网络切换中获取位置区信息的方法, 其特征在于, 该方法包 括:
目标网络的移动性管理实体接收由源网络的移动性管理实体发送的用户 设备的位置区相关信息;
所述目标网络的移动性管理实体在接收到所述用户设备的位置区相关信 息后, 根据所述位置区相关信息获取用户设备所需的位置区信息; 以及
所述目标网络的移动性管理实体将所述用户设备所需的位置区信息发送 至所述用户设备。
2. 根据权利要求 1所述的方法, 其特征在于,
所述用户设备的位置区相关信息为: 用户设备所在源网络的小区标识、 或者用户设备所在目标网络的小区标识、 或者用户设备所在目标网络的位置 区信息。
3. 根据权利要求 2所述的方法, 其特征在于,
在所述用户设备的位置区相关信息为用户设备所在源网络的小区标识 时, 所述目标网络的移动性管理实体根据所述位置区相关信息获取用户设备 所需的位置区信息, 包括: 所述目标网络的移动性管理实体根据所述用户设 备所在的源网络的小区标识, 以及源网络小区标识与目标网络位置区的对应 信息, 确定所述用户设备在目标网络中的位置区信息, 并根据所述用户设备 在目标网络中的位置区信息, 获取所述用户设备所需的位置区信息;
在所述用户设备的位置区相关信息为用户设备所在目标网络的小区标识 时, 所述目标网络的移动性管理实体根据所述位置区相关信息获取用户设备 所需的位置区信息, 包括: 所述目标网路的移动性管理实体根据所述用户设 备所在的目标网络的小区标识, 以及目标网络小区标识与目标网络位置区的 对应信息, 确定所述用户设备在目标网络中的位置区信息, 并根据所述用户 设备在目标网络中的位置区信息, 获取所述用户设备所需的位置区信息; 在所述用户设备的位置区相关信息为用户设备所在目标网络的位置区信 息时, 所述目标网络的移动性管理实体根据所述位置区相关信息获取用户设 备所需的位置区信息, 包括: 所述目标网络的移动性管理实体根据所述用户 设备在目标网络中的位置区信息获取所述用户设备所需的位置区信息。
4. 根据权利要求 3所述的方法, 其特征在于, 在所述用户设备的位置区 相关信息为用户设备所在目标网络的小区标识时, 所述用户设备所在目标网 络的小区标识由所述源网络的移动性管理实体通过网络选择动态获取, 或者 由所述源网络的移动性管理实体根据静态配置在本实体中的目标网络的小区 标识获取。
5. 根据权利要求 3所述的方法, 其特征在于, 在所述用户设备的位置区 相关信息为用户设备所在目标网络的位置区信息时, 所述用户设备所在目标 网络的位置区信息由所述源网络的移动性管理实体根据所述用户设备所在目 标网络的小区标识确定, 或者由所述源网络的移动性管理实体根据所述用户 设备所在源网络的小区标识确定, 其中, 所述目标网络的小区标识由所述源 网络的移动性管理实体通过网络选择动态获取或者根据静态配置在本实体中 的目标网络的小区标识获取。
6. 根据权利要求 5所述的方法, 其特征在于, 所述用户设备所在目标网 络的位置区信息由所述源网络的移动性管理实体根据所述用户设备所在目标 网络的小区标识确定, 包括, 所述用户设备所在目标网络的位置区信息由所 述源网络的移动性管理实体根据所述用户设备所在的目标网络的小区标识, 和所述目标网络小区标识与位置区的对应信息确定。
7. 根据权利要求 5所述的方法, 其特征在于, 所述用户设备所在目标网 络的位置区信息由所述源网络的移动性管理实体根据所述用户设备所在源网 络的小区标识确定, 包括, 所述用户设备所在目标网络的位置区信息由所述 源网络的移动性管理实体根据所述用户设备所在的源网络的小区标识, 和所 述源网络小区标识与位置区的对应信息确定。
8. 一种移动性管理实体, 其特征在于, 包括处理模块和收发模块, 其中, 所述收发模块用于将用户设备的位置区相关信息发送至目标网络的移动 性管理实体, 以及将用户设备所需的位置区信息发送至用户设备;
所述处理模块用于获取所述用户设备的位置区相关信息, 并通过所述收 发模块, 将所述位置区相关信息发送至所述目标网络的移动性管理实体。
9. 根据权利要求 8所述的移动性管理实体, 其特征在于,
所述处理模块具体用于, 获取用户设备在源网络中的小区标识, 并将所 述用户设备在源网络中的小区标识作为所述用户设备的位置区相关信息, 通 过所述收发模块将所述用户设备的位置区相关信息发送至所述目标网络的移 动性管理实体; 或者
所述处理模块具体用于, 通过网络选择动态或静态配置在本移动性管理 实体中的目标网络的小区标识, 获取所述用户设备在目标网络中的小区标识, 并将所述用户设备在目标网络中的小区标识作为所述用户设备的位置区相关 信息, 通过所述收发模块将所述用户设备的位置区相关信息发送至所述目标 网络的移动性管理实体; 或者
所述处理模块具体用于, 通过网络选择动态或静态配置在本移动性管理 实体中的目标网络的小区标识, 获取所述用户设备在目标网络中的小区标识, 并根据所述目标网络中的小区标识和所述目标网络小区标识与目标网络位置 区信息的对应信息, 确定所述用户设备在目标网络中的位置区信息, 且将所 述用户设备在目标网络中的位置区信息作为所述用户设备的位置区相关信 息, 通过所述收发模块将所述用户设备的位置区相关信息发送至所述目标网 络的移动性管理实体; 或者
所述处理模块具体用于, 获取所述用户设备在源网络中的小区标识, 并 根据所述源网络中的小区标识和所述源网络中的小区标识与目标网络位置区 信息的对应信息, 确定所述用户在目标网络中的位置区信息, 且将所述用户 设备在目标网络中的位置区信息作为所述用户设备的位置区相关信息, 通过 所述收发模块将所述用户设备的位置区相关信息发送至所述目标网络的移动 性管理实体。
10. 一种移动性管理实体, 其特征在于, 包括处理模块和收发模块, 其 中,
所述处理模块用于确认所述收发模块接收到所述用户设备的位置区相关 信息; 根据所述位置区相关信息获取用户设备所需的目标网络中的位置区信 息; 以及通过所述收发模块将所述用户设备所需的目标网络中的位置区信息 发送至用户设备。
11. 根据权利要求 10所述的移动性管理实体, 其特征在于, 所述处理模 块具体用于,
在所述位置区相关信息为所述用户设备在目标网络中的位置区信息时, 根据所述用户设备在网络中的位置区信息获取用户设备所需的目标网络中的 位置区信息; 或者 在所述位置区相关信息为所述用户设备在目标网络的小区标识时, 根据 所述目标网络的小区标识, 和所述目标网络的小区标识与目标网络位置区信 息的对应信息, 确定所述用户设备在目标网络中的位置区信息, 并根据所述 用户设备在目标网络中的位置区信息获取用户设备所需的目标网络中的位置 区信息; 或者
在所述位置区相关信息为所述用户设备在源网络的小区标识时, 根据所 述源网络的小区标识, 和所述源网络的小区标识与目标网络位置区信息的对 应信息, 确定所述用户设备在目标网络中的位置区信息, 并根据所述用户设 备在目标网络中的位置区信息获取用户设备所需的目标网络中的位置区信 息。
12. 一种异构网络切换中获取位置区信息的系统, 其特征在于, 包括用 户设备、 源网络的移动性管理实体和目标网络的移动性管理实体, 其中, 所述目标网络的移动性管理实体用于,
接收源网络的移动性管理实体发送的用户设备的位置区相关信息; 在确认接收到所述用户设备的位置区相关信息时, 根据所述位置区相关 信息获取用户设备所需的位置区信息; 以及
将所述用户设备所需的位置区信息发送至所述用户设备。
13. 一种异构网络切换中获取位置区信息的系统, 其特征在于, 包括用 户设备、 源网络的移动性管理实体和目标网络的移动性管理实体, 其中, 所述源网络的移动性管理实体用于, 获取所述用户设备的位置区相关信 息, 并将所述用户设备的位置区相关信息发送至目标网络的移动性管理实体。
14. 一种异构网络切换中获取位置区信息的方法, 其特征在于, 该方法 包括:
目标网络的移动性管理实体接收用户设备通过源网络的移动性管理实体 发送的附着请求消息;
所述目标网络的移动性管理实体在确认未接收到位置区信息时, 根据所 述附着请求消息构造附着接受消息, 并通过所述源网络的移动性管理实体发 送所述附着接受消息至所述用户设备, 其中所述附着接受消息中不含有用户 设备所需的位置区信息; 所述目标网络的移动性管理实体接收所述用户设备通过所述源网络的移 动性管理实体发送的附着完成消息, 并根据所述附着完成消息完成所述用户 设备无线链路切换至目标网络; 以及
所述目标网络的移动性管理实体在完成所述用户设备无线链路切换至目 标网络后, 通过所述用户设备发起的位置区更新流程获取所述用户设备的位 置区信息。
15. 根据权利要求 14所述的方法, 其特征在于, 所述附着完成消息, 由 所述用户设备在确认未接收到所述用户设备所需的位置区信息时, 根据所述 附着接受消息构造。
16. 根据权利要求 15所述的方法, 其特征在于, 所述获取位置区信息的 方法进一步还包括, 所述目标网络的移动性管理实体在发送所述附着接受消 息时, 启动定时器, 并在确定所述用户设备于规定时间内没有接入目标网络 时, 发起针对所述用户设备的退网流程。
17. 一种移动性管理实体, 其特征在于, 包括处理模块和收发模块, 其 中,
所述收发模块用于接收用户设备发送的附着请求消息和附着完成消息, 以及向用户设备发送附着接受消息;
所述处理模块用于,
在确定未接收到所述用户设备的位置区信息时, 根据所述附着请求消息 构造附着接受消息, 并通过所述收发模块发送所述附着接受消息, 其中所述 附着接受消息中不含有用户设备所需的位置区信息;
跟据所述附着完成消息, 完成用户设备的无线链路切换至目标网络; 以及通过所述用户设备发起的位置区更新流程获取所述用户设备的位置 区信息。
18. 根据权利要求 17所述的移动性管理实体, 其特征在于, 所述处理模 块进一步还用于, 在通过所述收发模块发送附着接受消息时, 启动定时器, 并在确认所述用户设备于规定的时间内没有接入目标网络时, 发起针对该用 户设备的退网流程。
19. 一种用户设备, 其特征在于, 包括收发模块和处理模块, 其中, 所述收发模块用于接收目标网络的移动性管理实体发送的附着接受消 息; 以及向目标网络的移动性管理实体发送附着请求消息和附着完成消息; 所述处理模块用于, 根据发起切换的决定构造附着请求消息; 在确认未 接收到本用户设备所需的位置区信息时, 根据所述附着接受消息构造附着完 成消息, 并通过所述收发模块发送所述附着完成消息; 以及在本用户设备的 无线链路切换至目标网络后, 发起位置区更新流程。
20. 一种异构网络切换中获取位置区信息的系统, 其特征在于, 包括目 标网络的移动性管理实体、 源网络的移动性管理实体和用户设备, 其中, 目标网络的移动性管理实体用于,
接收用户设备通过源网络的移动性管理实体发送的附着请求消息; 在确认未接收到用户设备的位置区信息时, 根据所述附着请求消息构造 附着接受消息, 并通过所述源网络的移动性管理实体发送所述附着接受消息 至所述用户设备, 其中所述附着接受消息不含有用户设备所需的位置区信息 接收所述用户设备通过所述源网络的移动性管理实体发送的附着完成消 息;
根据所述附着完成消息完成所述用户设备无线链路切换至目标网络; 以 及
通过所述用户设备发起的位置区更新流程获取用户设备的位置区信息。
21 . 一种异构网络切换中获取位置区信息的系统, 其特征在于, 包括目 标网络的移动性管理实体、 源网络的移动性管理实体和用户设备, 其中, 所述用户设备用于,
根据发起切换的决定构造附着请求消息;
通过所述源网络的移动性管理实体将所述附着请求消息发送至目标网络 的移动性管理实体;
接收目标网络的移动性管理实体通过源网络的移动性管理实体发送的附 着接受消息;
在确认未接收到所述用户设备在目标网络中的位置区信息时, 根据所述 附着接受消息构造附着完成消息;
通过所述源网络的移动性管理实体将所述附着完成消息发送至目标网络 的移动性管理实体;
以及发起位置更新流程。
PCT/CN2009/073102 2008-08-15 2009-08-05 一种异构网络切换中获取位置区信息的方法、装置和系统 WO2010017747A1 (zh)

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