WO2009046662A1 - Procédé, système et dispositif de traitement de mise à jour de position de terminal mobile - Google Patents

Procédé, système et dispositif de traitement de mise à jour de position de terminal mobile Download PDF

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Publication number
WO2009046662A1
WO2009046662A1 PCT/CN2008/072478 CN2008072478W WO2009046662A1 WO 2009046662 A1 WO2009046662 A1 WO 2009046662A1 CN 2008072478 W CN2008072478 W CN 2008072478W WO 2009046662 A1 WO2009046662 A1 WO 2009046662A1
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WO
WIPO (PCT)
Prior art keywords
sgsn
release
request
connection
mme
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PCT/CN2008/072478
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English (en)
French (fr)
Inventor
Xiaolong Guo
Lan Liu
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Huawei Technologies Co., Ltd.
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Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2009046662A1 publication Critical patent/WO2009046662A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/66Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method, system, and apparatus for processing a mobile terminal location update. Background technique
  • the UMTS Universal Mobile Telecommunication System
  • 3GPP Third Generation Partnership Project
  • the UMTS network consists of a core network including a CS (Circuit Switching) domain and a PS (Packet Switching) domain.
  • the CS domain provides circuit-switch-based services (such as voice services), and the PS
  • the domain provides packet-based switching services (such as Internet access).
  • FIG. 1 shows the UMTS network structure diagram.
  • the core network consists of the PS domain and the CS domain.
  • the core network PS domain consists of SGSN (Serving GPRS Support Node, Serving GPRS Support Node;), GGSN (Gateway GPRS Support Node, Gateway GPRS Support Node). ) and HLR
  • GMSC Global Mobile Switching Center
  • gateway mobile switching center equipment access network consisting of RNC (Radio Network Controller) and NodeB (base station).
  • RNC Radio Network Controller
  • NodeB base station
  • Each SGSN is connected to several RNCs.
  • Gi interface between the network
  • Gr interface between the SGSN and the HLR
  • Gc interface between the GGSN and the HLR.
  • the Gr interface and the Gc interface only transmit signaling messages, and there is no user service data.
  • the Iu interface is the key interface between the access network and the core network, and the management and control of the radio resources are isolated by the Iu interface.
  • the core network only focuses on the provision of services.
  • LTE Long Term Evolved
  • S AE System Architecture Evolved
  • RA1 and RA2 are existing 2G/3G RAs (Routing Areas).
  • the existing 2G/3G UEs must initiate the RAU (Routing Area Update) process every time the RA is replaced. .
  • the UE does not change the RA, there will be a periodic location update process to notify the current state of the network UE, prevent the UE from leaving the network and the network is not understood, and generate a situation in which the UE is continuously paged.
  • the case of the UE periodic location update is not considered (but it is also present).
  • TA1, TA2, TA3, and TA4 are TAs (Tracking Areas, similar to 2G/3G RAs) of the evolved network.
  • TAs Track Areas, similar to 2G/3G RAs
  • MME Mobility Management Entity
  • Inter-RAT restriction signaling is proposed to solve the above problems.
  • a method for reducing the impact of registration/update of an UE in an inter-RAT on an air interface is specifically: UE attaches to an access network after being attached (2G/3G network or evolved network) ), when the UE moves to another access network, re-registers to another access network, so that the UE simultaneously registers with the two access systems, and the UE is in the two networks at this time.
  • the corresponding registration area (RA or TA) of the network does not need to initiate any registration process.
  • the RAU procedure is initiated.
  • the two access systems registered by the UE have the context of the UE. Since the SAE network introduces the concept of "multi-TA registration", that is, one UE can allocate multiple TAs at the same time, the RA or TA of the registration area allocated by the above UE may be an RA list or a TA list. Since the UE is registered in multiple RAs or TAs, paging will also be paged in the corresponding registration areas of SAE and 2G/3G. The method will be specifically described below according to different situations.
  • the state of the UE in the Non-Access Stratum (NAS) is divided into PMM CON ECTED (connected state), PMM IDLE (idle state), and PMM-DETACHED (separated state), while in the PMM-CONNECTED state, the UE exists.
  • Iu connection and RRC (Radio Resource Control) connection There are four other states in the RRC connection state: CELL—DCH (CELL Dedicated Channel), CELL_FACH (CELL-Forward Access Channel), CELL PCH (CELL Paging Channel) Channel) and URA_PCH (UTRAN Registration Area Paging Channel) states in which the UE's activity is sequentially reduced. If the UE is in the URA-PCH state, its activity is low, and the network resources are consumed less. Only when the URA-PCH periodic updater expires or replaces the URA area (consisting of several cells) or has uplink data or downlink data. Will be converted to other states (such as CELL-DCH).
  • the current limitation of signaling is that PMM-CONNECTED is not used as the inactive processing of the restriction signaling, and PMM_CONNECTED is inactive.
  • the meaning of the UE in the PMM CONNECTED state is E-UTRA (Evolved UMTS Terrestrial Radio Access).
  • the registration area (the UE is camped on LTE, this area is the registration area of the UE, ie the TA assigned to the UE), and no update should be initiated.
  • the UE in the PMM_CONNECTED state moves to E-UTRA.
  • E-UTRA Evolved UMTS Terrestrial Radio Access Network
  • the update should be initiated.
  • the UE should be in the idle state in both the 3G state and the SAE state. Since the UE has the Iu connection and the RRC (Radio Resource Control) state of the UE in the PMM-CONNECTED state, a certain process is required to release the Iu connection and the RAN Context.
  • RRC Radio Resource Control
  • the SGSN needs to release the Iu connection of the UE, so that the UE changes to the PMM-IDLE state in the state of 3G.
  • the UE initiates the TAU to the MME.
  • the MME may not interact with the SGSN.
  • the SGSN does not realize that the Iu interface needs to be released because the existing SGSN is receiving.
  • the possible Iu interface is released after the Cancel Location sent by the HSS (Home Subscriber Server). Summary of the invention
  • the embodiment of the invention provides a method, a system and a device for processing a location update of a mobile terminal, so that after the UE in the PMM-CONNECTED state enters the E-UTRA, the Iu connection of the UE in the 3G network and the RRC state of the UE are translated.
  • An embodiment of the present invention provides a method for processing a location update of a mobile terminal, including the following steps:
  • the mobility management entity MME receives the tracking area route update TAU request sent by the user terminal UE, and sends a request release to the serving GPRS support node SGSN;
  • the SGSN receives the request release, and releases the Iu connection of the UE.
  • An embodiment of the present invention further provides a processing system for location update of a mobile terminal, including:
  • the user terminal is configured to: when the network side activates the restriction signaling, construct a TAU request, and send the TAU request to the MME, where the TAU request carries the trigger SGSN release III indication;
  • the MME is configured to receive a TAU request sent by the user terminal, and construct a request release according to the received TAU request, and release the request to the SGSN, where the request is released as an existing message carrying trigger SGSN to release Iu An indication of the connection, or a new message that triggers the SGSN to release the Iu connection;
  • the SGSN is configured to receive the request release of the MME, and determine whether there is an Iu connection of the UE. When the result of the determination is that the UE has an Iu connection, the Iu connection of the UE is released.
  • An embodiment of the present invention further provides a user terminal, including:
  • a constructing unit configured to construct a TAU request in the case that the network side activates the restriction signaling, where the TAU request carries the trigger SGSN to release the Iu indication;
  • An MME comprising:
  • a receiving unit configured to receive a TAU request sent by the user terminal, and send the request to the processing unit
  • a processing unit configured to construct a request release according to the received TAU request, where the request release is an indication that the existing message triggers the SGSN to release the Iu connection, or implements a new message that triggers the SGSN to release the Iu connection;
  • a sending unit configured to send the request release configured by the processing unit to the SGSN.
  • An SGSN including:
  • a receiving unit configured to receive a request release from the MME, and send the request to the determining unit, where the determining unit is configured to determine whether there is an Iu connection of the UE, and send the determination result to the processing unit;
  • a processing unit configured to receive a determination result of the determining unit, and release the Iu connection of the UE when the determining result is that the UE has an Iu connection.
  • the TAU process is initiated, the Iu connection of the UE is released, and the UE context of the RAN side is deleted, so that the UE is enabled.
  • the state in the network is the IDLE state.
  • FIG. 1 is a structural diagram of a UMTS network in the prior art
  • FIG. 2 is a structural diagram of a multi-RAT network in the prior art
  • FIG. 3 is a schematic diagram of a method for processing a location update of a mobile terminal according to an embodiment of the present invention
  • FIG. 4 is still another schematic diagram of a method for processing location update of a mobile terminal according to an embodiment of the present invention.
  • FIG. 5 is still another schematic diagram of a method for processing location update of a mobile terminal according to an embodiment of the present invention.
  • FIG. 6 is still another schematic diagram of a method for processing location update of a mobile terminal according to an embodiment of the present invention.
  • FIG. 7 is a processing system diagram of location update of a mobile terminal according to an embodiment of the present invention. detailed description
  • the SGSN can release the Iu connection of the UE only when the Cancel Location is received.
  • the Cancel Location is not received, the Iu connection of the UE cannot be released, and the UE cannot be in the IDLE state on the 3G network.
  • FIG. 3 a method for processing location update of a mobile terminal is shown in FIG. 3, and the specific steps are as follows:
  • Step S301 In the case that the restriction signaling is activated, the UE in the PMM_CONNECTED state enters the E-UTRA.
  • the UE is in URA PCH state or CELL PCH state or CELL FACH Status or CELL—DCH status.
  • Step S302 The UE triggers a TAU procedure, and sends a TAU request message to the MME.
  • Step S304 The SGSN receives and releases the message according to the request, and initiates an Iu release command message to release the Iu connection of the UE.
  • Step S305 After receiving the Iu release command message sent by the SGSN, the RNC deletes the RAN side context of the UE, and sends an Iu release response message to the SGSN.
  • Step S306 After receiving the Iu release response message, the SGSN sends a release response message to the MME. At this time, the SGSN may also not send a release response message.
  • Step S307 After receiving the release response message, the MME sends a TAU accept message to the UE, where the message carries a new S-TMSI (SAE-Temporary Mobile Subscriber Identity) and/or a TA list, or does not carry.
  • S-TMSI SAE-Temporary Mobile Subscriber Identity
  • Step S308 If the S-TMSI and/or the TAlist change, the UE sends a TAU complete message to the MME; if the S-TMSI and/or the TA list have not changed, the step is not performed.
  • the sending of the TAU request message to the MME by the UE carries an indication that the SGSN is released to release the Iu (such as adding a new parameter or adding a new cause value to the Cause parameter, etc.); the request release message sent by the MME to the SGSN is carried.
  • An existing message (such as a Context Request message) that triggers the SGSN to release an indication of the Iu connection, or other new message that triggers the SGSN to release the Iu connection.
  • the indication of the triggering of the SGSN in the existing message and the indication of the triggering of the SGSN in the TAU request message may be the same or different, and the role is to trigger the SGSN to release the Iu.
  • the foregoing embodiment may also be used to modify the SGSN to trigger the SGSN to release the Iu connection. Specifically, after receiving the release request message, the SGSN checks whether the Iu connection of the UE exists, and if so, releases the Iu connection of the UE, so that the state of the UE is PMM. The IDLE (idle) state, such that the UE does not need to carry an indication that the SGSN is released to release the Iu connection in the TAU request message, and the MME does not have to carry an indication that the SGSN is released to release the Iu connection in the request release message.
  • the IDLE inle
  • Step S401 In the case that the restriction signaling is activated, the UE in the URA_PCH state enters the E-UTRA.
  • Step S402 The UE triggers a TAU procedure, and sends a TAU Request message to the eNodeB, where the TAU Request message carries a special cause value (or other indication).
  • the SGSN and the MME respectively allocate an RA and a TA list to the UE, and the UE in the IDLE state does not have to initiate the movement in the areas. Update
  • the TAU Request message sent by the UE carries a special indication, such as carrying a new parameter or a special cause value, or carrying two TMSIs in the TAU Request message, and one is S-TMSI, that is, the TMSI allocated by the MME to the UE.
  • S-TMSI that is, the TMSI allocated by the MME to the UE.
  • P-TMSI which is the TMSI allocated by the SGSN to the UE, or other methods.
  • Step S403 After receiving the TAU Request message, the eNodeB selects the MME according to the S-TMSI information in the TAU Request message, and sends the TAU Request message to the MME.
  • Step S404 After receiving the TAU Request message, the MME sends a Context Request message to the SGSN, where the message carries a specific indication (or sends a new display message).
  • Step S405 After receiving the Context Request message, the SGSN initiates an Iu Release Command message according to the indication carried in the Context Request message, and releases the Iu connection of the UE.
  • Step S406 After receiving the Iu Release Command message, the RNC deletes the RAN side context of the UE, and sends an Iu Release Complete response message to the SGSN.
  • the RNC is assigned to the Node B and the Node B is used as the RNC.
  • the implementation process is the same as that of the RNC.
  • Step S407 After receiving the Iu Release Complete message, the SGSN sends a Context Response message to the MME.
  • Step S408 Perform an authentication and authentication process between the UE and the MME, the MME, and the HSS. Depending on the situation, this process may not exist.
  • Step S409 The MME sends a Context Acknowledge message to the SGSN.
  • Step S410 The MME sends a TAU Accept message to the UE, where the message carries a new S-TMSI and/or TA list, or does not carry.
  • Step S411 If the S-TMSI and/or the TA list change, the UE sends a TAU Complete message to the MME.
  • the UE is in the IDLE state of the SAE and the IDLE state of the 3G.
  • the SGSN is triggered to initiate the Iu release by carrying the parameter or the parameter value in the original message Context Request/Response, or the new message may be used to trigger the SGSN to initiate the Iu release.
  • the process described in the embodiment is similar, and the description is not repeated here.
  • the UE moves to the E-UTRA to initiate the TAU process, which may involve a change of the MME and/or the S-GW that will register the UE.
  • the implementation process is slightly different from the process described in the second embodiment, but the TAU request message and the MME/SGSN The release request message is unchanged.
  • the UE is in the URA-PCH state and registers the MME of the UE.
  • a change occurs as an example, a method for processing a location update of a mobile terminal, as shown in FIG. 5, the specific steps are as follows:
  • Step S501 In the case that the restriction signaling is activated, the UE in the URA-PCH state enters the E-UTRA.
  • Step S502 The UE triggers a TAU procedure, and sends a TAU Request message to the MME, where the TAU Request message carries a special cause (or other indication).
  • the MME is not the MME of the original registered UE.
  • Step S503 After receiving the TAU Request message, the MME sends a Context Request message to the SGSN, where the message carries a specific indication (or sends a new display message).
  • Step S504 After receiving the Context Request message, the SGSN initiates a lu Release Command message according to the indication carried in the Context Request message, and releases the lu connection of the UE.
  • Step S505 After receiving the lu Release Command message, the RNC deletes the RAN side context of the UE, and sends a lu Release Complete response message to the SGSN.
  • Step S506 After receiving the lu Release Complete message, the SGSN sends a Context Response message to the MME.
  • Step S507 The MME sends a Context Request message to the original MME to obtain the context of the UE.
  • the original MME is the MME of the originally registered UE.
  • Step S508 After receiving the Context Request, the original MME sends a Context Response message to the MME, where the message carries the context of the UE.
  • Steps S507 and S508 may also not exist, or exist before step S503, that is, after receiving the TAU Request message sent by the UE, the MME acquires the context of the UE from the original MME.
  • Step S509 Perform an authentication and authentication process between the UE and the MME, the MME, and the HSS. Depending on the situation, this process may not exist.
  • Step S510 The MME sends a Context Acknowledge message to the SGSN.
  • Step S511 The MME sends an Update Location message to the HSS.
  • Step S512 The HSS negotiates with the original MME to cancel the Location of the original MME in the HSS.
  • Step S513 The process of inserting the Subscriber Data between the HSS and the MME may not exist.
  • Step S514 The HSS sends an Update Location Ack message to the MME.
  • Step S515 After receiving the Update Location Ack message, the MME sends a TAU Accept message to the UE, where the message carries a new S-TMSI and/or TA list, and may not be carried.
  • Step S516 If the S-TMSI and/or the TAlist change, the UE sends a TAU Complete message to the MME.
  • the UE After the TAU process initiated by the UE ends, the UE is in the IDLE state of the SAE and the IDLE state of the 3G.
  • step S503 is used to trigger the SGSN to release the Iu connection using other messages, steps S508 and/or S510 may not be triggered.
  • the process of carrying the update is omitted in the method, that is, after the MME and/or the S-GW are replaced, the bearer information needs to be updated, and the bearer information of the new MME to the S-GW is established, and after the S-GW is changed, the bearer is also updated. To the SGSN.
  • the change of the MME may also change the specific implementation process of the third embodiment, where the MME obtains the context information from the original MME (that is, the MME that originally registered the UE), and then the original MME sends a signaling to the SGSN to trigger the SGSN release.
  • the specific steps are as follows:
  • Step S601 In the case that the restriction signaling is activated, the UE in the URA-PCH state enters the E-UTRA.
  • Step S602 The UE triggers a TAU procedure, and sends a TAU Request message to the MME, where the TAU Request message carries a special cause value (or other reference) Show).
  • Step S603 After receiving the TAU Request message, the MME sends a Context Request message to the original MME to obtain the context of the UE, where the message carries a specific indication (or sends a new display message).
  • Step S604 The original MME receives the Context Request message and forwards the message to the SGSN (because the original MME records the address information of the SGSN).
  • Step S605 After receiving the Context Request message, the SGSN initiates an Iu Release Command message to release the Iu connection of the UE according to the indication carried in the Context Request message.
  • Step S606 After receiving the Iu Release Command message, the RNC deletes the RAN side context of the UE, and sends an Iu Release Complete response message to the SGSN.
  • Step S607 After receiving the Iu Release Complete message, the SGSN sends a Context Response message to the original MME.
  • Step S608 The original MME receives the Iu Release Complete message and forwards the message to the MME.
  • the UE After the end of the TAU procedure initiated by the UE, the UE is in the IDLE state of the SAE and the IDLE state of the 3G.
  • the above Context Request can also use other signaling messages to trigger the SGSN to release the Iu connection.
  • the foregoing embodiment describes a method for updating a location of a mobile terminal in the present invention by taking an example in which the UE carries the trigger SGSN to release the Iu connection in the RAU request message and the MME in the release request message.
  • the SGSN may be triggered to release the Iu connection by modifying the SGSN. Specifically, by modifying the SGSN, the SGSN checks whether there is a UE Iu connection after receiving the release request message, and if yes, releases the Iu connection. In this way, the UE does not need to carry the indication that the SGSN is released to the Iu connection in the TAU request message, and the MME does not need to carry the indication in the Context Request to trigger the SGSN to release the Iu connection.
  • the TAU process is initiated, the Iu connection of the UE is released, and the UE is deleted.
  • the state of the UE in the 3G network is changed to the IDLE state.
  • the above uses the URA-PCH state as an example to introduce the UE in this state to limit signaling.
  • CELL-PCH or CELL-FACH or CELL-DCH is used as the active state of the restricted signaling, it may be similar to the case of the present invention for URA-PCH, in which case, the URA in the description of the present invention is PCH can be changed to CELL PCH or CELL-FACH or CELL-DCH. The specific method will not be described again.
  • the TAU process is initiated by using the method provided by the embodiment of the present invention, and the UE's lu connection and the RAN side UE context are released, so that the UE is in the SAE and 3G IDLE. status.
  • a processing system for updating a location of a mobile terminal includes at least: a user terminal 10, an MME 20, and an SGSN 30.
  • the user terminal 10 is configured to initiate a TAU procedure in the case of limiting signaling activation, and send a TAU request message to the MME 20.
  • the user terminal 10 is in a PMM-CONNECTED state.
  • the MME 20 is configured to receive a TAU request message sent by the user terminal 10, and send a request release message to the SGSN30.
  • the SGSN 30 is configured to receive and release a message according to the request sent by the MME 20, and release the lu connection of the user terminal 10.
  • the user terminal 10 further includes: a constructing unit 11 configured to: when the network side activates the restriction signaling, construct a TAU request, where the TAU request carries a trigger SGSN release lu indication, so that after receiving the request, the MME can The SGSN interacts so that the SGSN releases the existing lu connections.
  • the sending unit 12 is configured to send a TAU request constructed by the constructing unit 11 to the MME 20.
  • the MME 20 further includes: a receiving unit 21, configured to receive a TAU request sent by the user terminal 10, and send the TAU request to the processing unit 22.
  • the processing unit 22 is configured to construct a request release according to the received TAU request, where the request release is an indication that the existing message triggers the SGSN to release the lu connection, or implements a new message that triggers the SGSN to release the lu connection.
  • the sending unit 23 is configured to send the request release constructed by the processing unit 22 to the SGSN 30.
  • the SGSN 30 further includes: a receiving unit 31, configured to receive the request release of the MME20 It is released and sent to the judging unit 32.
  • the determining unit 32 is configured to determine whether there is an Iu connection of the UE, and send the determination result to the processing unit 33.
  • the processing unit 33 is configured to receive the determination result of the determining unit 32. When the result of the determination is that the Iu connection of the user terminal 10 exists, the Iu connection of the user terminal 10 is released.
  • the system further includes: an RNC 40, configured to receive an Iu release command message sent by the SGSN 30, delete the RAN side context of the user terminal 10, and send an Iu release response message to the SGSN30.
  • a user terminal is configured to initiate a TAU process in the case of limiting signaling activation, and the TAU request message sent to the MME, the user terminal is in a PMM_CONNECTED state.
  • the method includes: a constructing unit, configured to construct a TAU request in the case that the network side activates the restriction signaling, where the TAU request carries the trigger SGSN to release the Iu indication.
  • a sending unit configured to send a TAU request of the constructing unit to the MME.
  • an MME is configured to receive a TAU request message sent by a user terminal, and send a request release message to the SGSN.
  • the method includes: a receiving unit, configured to receive a TAU request sent by the user terminal, and send the TAU request to the processing unit. And a processing unit, configured to construct a request release according to the received TAU request, where the request release is an indication that the existing message carries the triggering SGSN to release the Iu connection, or implements a new message that triggers the SGSN to release the Iu connection. And a sending unit, configured to send the request release of the processing unit to the SGSN.
  • the structure and the relationship with other devices in the network are the same as those of the MME shown in FIG. 7 in the above fifth embodiment, and the description thereof will not be repeated here.
  • an SGSN is configured to receive a request release message sent by the MME, determine whether there is an Iu connection of the user terminal, and if yes, release the Iu connection of the user terminal.
  • the method includes: receiving, receiving the request release of the MME 20, and sending the request to the determining unit.
  • the determining unit is configured to determine whether there is an Iu connection of the user terminal, and send the determination result to the processing unit.
  • a processing unit configured to receive a judgment result of the determining unit, and release the user terminal when the judgment result is that the Iu connection of the user terminal exists The III connection.
  • the structure and the relationship with other devices in the network are the same as those of the SGSN shown in FIG. 7 in the above fifth embodiment, and the description thereof will not be repeated here.
  • the TAU process is initiated, the lu connection of the UE is released, and the UE context of the RAN side is deleted.
  • the state of the UE in the 3G network is changed to the IDLE state.

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Description

一种移动终端位置更新的处理方法、 系统和装置
技术领域
本发明实施例涉及通信技术领域,尤其涉及一种移动终端位置更 新的处理方法、 系统和装置。 背景技术
UMTS ( Universal Mobile Telecommunication System,通用移动通 信系统)是 3GPP ( Third Generation Partnership Project, 第三代合作伙 伴计划)组织定义的一种第三代无线通信网络技术标准。 UMTS网络 由核心网和接入网组成, 核心网包括 CS ( Circuit Switching, 电路交 换)域和 PS ( Packet Switching, 分组交换)域, CS域提供基于电路 交换的业务(例如语音业务), 而 PS域提供基于分组交换的业务(例 ^口 Internet访问 )。
图 1所示为 UMTS网络结构图, 核心网由 PS域和 CS域组成, 核心 网 PS域由 SGSN ( Serving GPRS Support Node, 服务 GPRS支持节点;)、 GGSN ( Gateway GPRS Support Node, 网关 GPRS支持节点)和 HLR
( Home Location Register, 归属位置寄存器)组成, 核心网 CS域由 MSC ( Mobile Services switching Center, 移动业务交换中心)、 VLR
( Visitor Location Register,拜访位置寄存器)、 GMSC( Gateway Mobile Switching Center,网关移动交换中心 殳备组成,接入网由 RNC( Radio Network Controller, 无线网络控制器)和 NodeB (基站)组成。 每个 RNC连接若干 NodeB, 每个 SGSN连接若干 RNC。 NodeB与 RNC之间 为 Iub接口, RNC与 SGSN之间为 Iu接口, SGSN与 GGSN之间为 Gn或 者 Gp接口, GGSN与 PDN ( Packet Data Network, 分组数据网络)之 间为 Gi接口, SGSN与 HLR之间为 Gr接口, GGSN与 HLR之间为 Gc接 口。 其中, Gr接口和 Gc接口只传输信令消息, 没有用户的业务数据。 MSC与 GMSC之间为 E接口, MSC与 VLR之间为 B接口。 Iu接口是接入 网与核心网的关键接口, 无线资源的管理和控制被 Iu接口隔离在接入 网内, 使得核心网只关注业务的提供。
目前在 3GPP中, 各厂商积极研究 LTE ( Long Term Evolved, 长期 演进网络) /S AE ( System Architecture Evolved , 系统架构演进网络), LTE的目的是提供一种能够降低时延、 提高用户数据速率、 改进的系 统容量和覆盖的低成本的网络, 使用 PS域业务, 网络为 IP承载。
SAE与 Pre-SAE (即 2G或 3G网络)间不同 RAT ( Radio Access Technology, 无线接入技术) 间的限制信令是一个重要的课题, 例如 UE在不同 RAT 间移动 (如 2G/3G的网络和演进网络), UE ( User Equipment, 用户终端 )会根据驻扎在不同网络而引起网络注册的变 化,频繁的网络注册过程对空口是一种极大的浪费。如图 2所示: RA1 和 RA2为现有 2G/3G的 RA ( Routing Area, 路由区 ), 现有 2G/3G 的 UE每更换一次 RA都要发起 RAU ( Routing Area Update, 路由区 更新)过程。 当然 UE在不更换 RA的情况下, 也会有周期性的位置 更新过程, 通知网络 UE的目前状态, 防止 UE离开网络而网络不了 解, 产生不断寻呼 UE的情况。 以下描述的情况中, 均不考虑 UE周 期性位置更新的情况(但是它也是存在的)。
TA1、 TA2、 TA3和 TA4是演进网络的 TA ( Tracking Area, 跟踪 区, 类似于 2G/3G的 RA )。 当一个多模 UE在这些区域移动, 如果 没有一定的机制, 会导致频繁的网络注册过程, 如当 UE进入 RA1 时, 需向 2G/3G的 SGSN注册, UE进入 TA1时, 又需向演进网络 的 MME ( Mobility Management Entity, 移动性管理实体) 注册, UE 移动出 TA1进入 RA1时, 又需重新向 2G/3G的 SGSN注册。 注册的 目的是使得网络能在某种 RAT中寻呼到 UE,但是频繁注册会带来大 量的注册信令开销。
Inter-RAT 间限制信令就是为解决上述问题而提出的。 目前一种 减少 idle (空闲)模式 UE在 inter-RAT下的注册 /更新对空中接口的 影响的方法具体为: UE attach (附着)后注册到一种接入网络(2G/3G 网络或演进网络), 当 UE移动到另一个接入网络时再注册到另一个 接入网络, 这样 UE同时注册到两种接入系统, 此时 UE在这两个网 络的对应注册区域( RA或 TA )移动不用发起任何注册过程。 当 UE 更换 RA或 TA时,要发起 RAU过程。 UE注册的两种接入系统( 2G/3G 的 SGSN或演进网络的 MME )都有 UE的上下文( context )。 由于 SAE网络引入 "多 TA注册" 的概念, 即一个 UE可以同时分配多个 TA, 上述 UE分配的注册区域的 RA或 TA可能是 RA list或 TA list。 由于 UE在多个 RA或 TA注册,寻呼的时候也会同时在 SAE和 2G/3G 相应的注册区域内进行寻呼。 以下根据不同的情况对本方法进行具体 描述。
UE 在 NAS ( Non Access Stratum , 非接入层) 的状态分为 PMM CON ECTED (连接状态)、 PMM IDLE (空闲状态) 和 PMM— DETACHED (分离状态), 而在 PMM— CONNECTED状态意味 着 UE存在 Iu连接和 RRC ( Radio Resource Control, 无限资源控制) 连接。 在 RRC 连接状态下又存在四种状态: CELL— DCH ( CELL Dedicated Channel , 小 区专用信道 )、 CELL_FACH ( CELL— Forward Access Channel, 小区前向接入信道)、 CELL PCH ( CELL Paging Channel, 小区寻呼信道) 和 URA_PCH ( UTRAN Registration Area Paging Channel, UTRAN注册区寻呼信道 )状态, 其中 UE的活动性依次降低。 如 UE处于 URA— PCH状态时, 其活动 性较低, 消耗网络资源较少, 只有在 URA— PCH周期性更新器到期或 更换 URA区域(由若干 Cell组成)或者有上行数据或下行数据, 才 会转为其它状态 (如 CELL— DCH )。
目前限制信令的结论是 PMM— CONNECTED不作为限制信令的 inactive 处 理 , PMM— CONNECTED作 为 inactive 的 含 义 是 PMM CONNECTED状态的 UE进入 E-UTRA ( Evolved UMTS Terrestrial Radio Access, 演进的接入技术) 的注册区域(UE驻扎到 LTE, 该区域是 UE的注册区域, 即分配给 UE的 TA ), 不应该发起任何 更新。
由于 PMM— CONNECTED不作为限制信令的 inactive处理 ,在限制 信令激活情况下, PMM— CONNECTED状态的 UE移动至 E-UTRA ( Evolved UMTS Terrestrial Radio Access Network, 演进 UMTS 地面 无线接入网)(UE驻扎到 LTE )后, 则应该发起更新, 更新之后, UE 应该在 3G状态和 SAE状态都处于空闲状态。 而由于 UE在 PMM— CONNECTED状态下 , 在 3G网络内部存在该 UE的 Iu连接和 RRC ( Radio Resource Control, 无线资源控制)状态, 需要进行一定 的处理来释放 Iu连接和 RAN的 Context。
PMM— CONNECTED状态的 UE进入 E-UTRA后, 需要发起 TAU
( Track Area Update,跟踪区域更新), SGSN需要释放该 UE的 Iu连接, 这样 UE在 3G的状态就转为 PMM— IDLE状态了。 UE发起 TAU到 MME, 在普通 TAU情况下, 如果没有上下文改变, MME可能不会与 SGSN交 互, 即使 MME与 SGSN交互, SGSN也不会意识到需要释放 Iu接口, 因为现有 SGSN是在接收到 HSS ( Home Subscriber Server, 归属地用 户服务器)发送的 Cancel Location (取消位置)后, 才会释放可能的 Iu接口。 发明内容
本发明实施例提供一种移动终端位置更新的处理方法、系统和装 置, 以实现在 PMM— CONNECTED状态的 UE进入 E-UTRA后, 释 放 3G网络中该 UE的 Iu连接和转换 UE的 RRC状态。
本发明的实施例提供一种移动终端位置更新的处理方法, 包括以 下步骤:
移动性管理实体 MME接收到用户终端 UE发送的跟踪区路由更 新 TAU请求, 向服务 GPRS支持节点 SGSN发送请求释放;
所述 SGSN接收到所述请求释放, 释放所述 UE的 Iu连接。 本发明的实施例还提供一种移动终端位置更新的处理系统, 包 括:
用户终端,用于在网络侧激活限制信令的情况下,构造 TAU请求, 并将所述 TAU请求发送给 MME , 所述 TAU请求中携带触发 SGSN释放 III指示;
MME, 用于接收所述用户终端发送的 TAU请求, 并根据所述接 收到的 TAU请求构造请求释放, 并将所述请求释放发送给 SGSN, 所 述请求释放为现有消息携带触发 SGSN释放 Iu连接的指示, 或实现触 发 SGSN释放 Iu连接的新消息;
SGSN,用于接收 MME的请求释放,并判断是否存在 UE的 Iu连接, 当所述判断结果为存在 UE的 Iu连接时, 释放所述 UE的 Iu连接。
本发明的实施例还提供一种用户终端, 包括:
构造单元,用于在网络侧激活限制信令的情况下,构造 TAU请求, 所述 TAU请求中携带触发 SGSN释放 Iu指示;
发送单元, 用于将所述构造单元构造的 TAU请求发送给 MME。 一种 MME, 包括:
接收单元, 用于接收用户终端发送的 TAU请求, 并发送给处理单 元;
处理单元, 用于根据所述接收到的 TAU请求构造请求释放, 所述 请求释放为现有消息携带触发 SGSN释放 Iu连接的指示, 或实现触发 SGSN释放 Iu连接的新消息;
发送单元, 用于将所述处理单元构造的所述请求释放发送给 SGSN。
一种 SGSN, 包括:
接收单元, 用于接收 MME的请求释放, 并发送给判断单元; 判断单元,用于判断是否存在 UE的 Iu连接,并将判断结果发送给 处理单元;
处理单元, 用于接收所述判断单元的判断结果, 当所述判断结果 为存在 UE的 Iu连接时, 释放所述 UE的 Iu连接。
与现有技术相比, 本发明的实施例具有以下优点:
通过使用本发明实施例提供的方法,使得在限制信令激活情况下 PMM— CONNECTED状态的 UE进入 E-UTRA后, 发起 TAU过程, 释放该 UE的 Iu连接以及删除 RAN侧的 UE上下文,使 UE在 3G网 络中的状态为 IDLE状态。 附图说明
图 1 是现有技术中 UMTS网络结构图;
图 2 是现有技术中多 RAT网络结构图;
图 3 是本发明实施例的一种移动终端位置更新的处理方法的示 意图;
图 4 是本发明实施例的一种移动终端位置更新的处理方法的又 一示意图;
图 5 是本发明实施例的一种移动终端位置更新的处理方法的再 一示意图;
图 6 是本发明实施例的一种移动终端位置更新的处理方法的再 一示意图;
图 7是本发明实施例的一种移动终端位置更新的处理系统图。 具体实施方式
下面结合附图和实施例,对本发明的具体实施方式作进一步详细 描述:
在实现本发明的过程中, 发明人发现现有技术至少存在以下问 题:
SGSN在只有在接收到 Cancel Location时才能释放该 UE的 Iu连 接; 在未收到 Cancel Location时, 无法释放该 UE的 Iu连接, 无法 使 UE在 3G网络中的状态为 IDLE状态。
本发明的实施例一中, 一种移动终端位置更新的处理方法, 如图 3所示, 具体步骤如下:
步骤 S301、 限制信令激活情况下, PMM— CONNECTED状态的 UE进入 E-UTRA。
所述 UE处于 URA PCH状态或 CELL PCH状态或 CELL FACH 状态或 CELL— DCH状态。
步骤 S302、 UE触发 TAU过程, 向 MME发送 TAU请求消息。 步骤 S303、 MME接收到该 TAU请求消息后, 向 SGSN发送请 求释放消息。
步骤 S304、 SGSN接收并根据该请求释放消息, 发起 Iu释放命 令消息释放该 UE的 Iu连接。
步骤 S305、 RNC接收到 SGSN发送的 Iu释放命令消息后, 删 除 UE的 RAN侧上下文, 向 SGSN发送 Iu释放响应消息。
步骤 S306、 SGSN接收到 Iu释放响应消息后, 向 MME发送释 放响应消息。 此时 SGSN也可能不发送释放响应消息。
步骤 S307、 MME接收到释放响应消息后, 向 UE发送 TAU接 受消息, 消息中携带新的 S-TMSI ( SAE-Temporary Mobile Subscriber Identity, SAE临时移动用户标识)和 /或 TA list, 或者不携带。
步骤 S308、 如果 S-TMSI和 /或 TAlist发生改变, UE向 MME发 送 TAU完成消息; 如果 S-TMSI和 /或 TA list未发生改变 , 不执行此 步骤。
上述实施例中, 在 UE向 MME发送 TAU请求消息中携带触发 SGSN释放 Iu的指示(如增加新的参数或在 Cause参数中增加新的原 因值等); MME向 SGSN发送的请求释放消息为携带触发 SGSN释 放 Iu连接的指示的现有消息 (如 Context Request (上下文请求 ) 消 息), 或其他实现触发 SGSN释放 Iu连接的新消息。 在现有消息中携 带的触发 SGSN释放 Iu的指示与 TAU请求消息中携带的触发 SGSN 释放 Iu的指示可能为相同或不同, 其作用均为触发 SGSN释放 Iu。
上述实施例也可以通过修改 SGSN实现触发 SGSN释放 Iu连接, 具体的, SGSN接收到释放请求消息后检查 UE的 Iu连接是否存在, 如果存在则释放该 UE的 Iu连接,使得 UE的状态为 PMM— IDLE(空 闲)状态, 这样 UE在 TAU请求消息中不必携带触发 SGSN释放 Iu 连接的指示, MME也不必在请求释放消息中携带触发 SGSN释放 Iu 连接的指示。 本发明的实施例二中, 以 UE处于 URA— PCH状态为例, 一种移 动终端位置更新的处理方法如图 4所示, 该过程中不涉及 MME和 / 或 S-GW的更换, 具体步骤如下:
步骤 S401、 限制信令激活情况下, URA— PCH状态的 UE进入 E-UTRA。
步骤 S402、 UE触发 TAU过程, 向 eNodeB发送 TAU Request ( TAU请求)消息, 该 TAU Request消息中携带一个特殊原因值(或 其他指示 )。
具体的, 不管 UE进入的区域是否为分配给 UE的注册区域(例 如 UE限制信令激活后, SGSN和 MME分别向 UE分配一个 RA和 一个 TA list , IDLE状态的 UE在这些区域内移动不必发起更新 ) , 只 要 UE处于 URA— PCH状态且进入 E-UTRA, 即驻扎在 LTE后, 就会 触发 TAU过程。
在 UE发送的 TAU Request消息中携带特殊的指示, 如携带一个 新的参数或一个特殊原因值, 或者在 TAU Request 消息中携带两个 TMSI,一个为 S-TMSI,即 MME分配给 UE的 TMSI,—个为 P-TMSI, 即 SGSN分配给 UE的 TMSI, 或者釆用其他方式。 通过釆用上述方 式中的一种或多种,触发 MME通知 SGSN,使得 SGSN发起 Iu释放, 将 UE状态记录为 PMM— IDLE。
步骤 S403、 eNodeB接收到 TAU Request消息后, 根据该 TAU Request消息中的 S-TMSI信息选择 MME, 将该 TAU Request消息发 送给 MME。
步骤 S404、 MME接收到 TAU Request消息后, 向 SGSN发送 Context Request (上下文请求) 消息, 消息中携带一个特定指示 (或 发送一个新的显示消息)。
具体的, MME收到 TAU Request消息后, 需要发起信令消息通 知到 SGSN触发释放 Iu连接, 该信令消息是一个新的显示信令, 如 "URA PCH Update Notification ( URA— PCH更新通知;)", 或者在原 有消息中添加新的参数或参数值, 如添加一个指示用于表示 URA— PCH状态的 UE发起 TAU,或者通过一个特殊的原因值来表示。 步骤 S405、 SGSN收到 Context Request消息后, 根据该 Context Request消息中携带的指示, 发起 Iu Release Command消息, 释放该 UE的 Iu连接。
步骤 S406、 RNC接收到 Iu Release Command消息后, 删除 UE 的 RAN侧上下文, 向 SGSN发送 Iu Release Complete响应消息。
在 HSPA+ ( Evolved High-Speed Packet Access, 演进的高速分组 接入技术 ) 的情况下, RNC下放到 Node B, 将 Node B作为 RNC, 其实现过程与 RNC—致, 在此不做重复描述。
步骤 S407、 SGSN接收到 Iu Release Complete消息后, 向 MME 发送 Context Response (上下文响应) 消息。
步骤 S408、 UE与 MME、 MME与 HSS之间进行鉴权认证过程。 视不同情况, 该过程也可能不存在。
步骤 S409、 MME向 SGSN发送 Context Acknowledge (上下文响 应) 消息。
步骤 S410、 MME向 UE发送 TAU Accept ( TAU接受 ) 消息 , 消息中携带新的 S-TMSI和 /或 TA list, 或者不携带。
步骤 S411、 如果 S-TMSI和 /或 TA list发生改变, UE向 MME发 送 TAU Complete ( TAU完成) 消息。
TAU过程结束后, UE处于 SAE的 IDLE状态和 3G的 IDLE状 态。
上述实施例中 , 通过在原有消息 Context Request/Response (上下 文请求 /响应) 中携带参数或参数值, 触发 SGSN发起 Iu释放, 或者 也可以使用新的消息触发 SGSN发起 Iu释放, 其实现过程与上述实 施例描述的过程类似, 在此不做重复描述。
UE移动到 E-UTRA发起 TAU过程中 , 可能涉及会注册 UE的 MME和 /或 S-GW的改变,其实现过程与实施例二中描述的过程稍有 不同, 但 TAU请求消息和 MME/SGSN之间的释放请求消息不变。 本发明的实施例三中,以 UE处于 URA— PCH状态且注册 UE的 MME 发生改变为例, 一种移动终端位置更新的处理的方法, 如图 5所示, 具体步骤如下:
步骤 S501、 限制信令激活情况下, URA— PCH状态的 UE进入 E-UTRA。
步骤 S502、 UE触发 TAU过程, 向 MME发送 TAU Request消 息, 该 TAU Request消息中携带一个特殊原因( cause )值(或其他指 示)。 该 MME并非原来的注册 UE的 MME。
步骤 S503、 MME接收到 TAU Request消息后, 向 SGSN发送 Context Request消息, 消息中携带一个特定指示(或发送一个新的显 示消息)。
步骤 S504、 SGSN收到 Context Request消息后, 根据该 Context Request消息中携带的指示, 发起 lu Release Command ( lu释放命令 ) 消息, 释放该 UE的 lu连接。
步骤 S505、 RNC接收到 lu Release Command消息后, 删除 UE 的 RAN侧上下文, 向 SGSN发送 lu Release Complete ( lu释放完成 ) 响应消息。
步骤 S506、 SGSN接收到 lu Release Complete消息后, 向 MME 发送 Context Response消息。
步骤 S507、 MME向原 MME发送 Context Request消息获取 UE 的上下文。 原 MME即原来注册 UE的 MME。
步骤 S508、 原 MME接收到 Context Request后, 向 MME发送 Context Response消息, 消息中携带 UE的上下文。
步骤 S507和 S508也可能不存在, 或者存在于步骤 S503之前, 即 MME接收到 UE发送的 TAU Request消息后 ,向原 MME获取 UE 的上下文。
步骤 S509、 UE与 MME、 MME与 HSS之间进行鉴权认证过程。 视不同情况, 该过程也可能不存在。
步骤 S510、 MME向 SGSN发送 Context Acknowledge消息。 步骤 S511、 MME向 HSS发送 Update Location消息。 步骤 S512、 HSS和原 MME之间协商, 在 HSS中取消原 MME 的 Location (位置)。
步骤 S513、 HSS和 MME之间进行 Insert Subscriber Data的过程, 该过程也可能不存在。
步骤 S514、 HSS向 MME发送 Update Location Ack (更新位置通 知) 消息。
步骤 S515、 MME接收到 Update Location Ack消息后, 向 UE发 送 TAU Accept消息, 消息中携带新的 S-TMSI和 /或 TA list, 也可能 不携带。
步骤 S516、 如果 S-TMSI和 /或 TAlist发生改变, UE向 MME发 送 TAU Complete消息。
UE发起的 TAU过程结束后, UE处于 SAE的 IDLE状态和 3G 的 IDLE状态。
在 UE移动到 E-UTRA发起 TAU过程中, 涉及到 S-GW改变的 过程与 MME的改变类似, 即实现流程有所不同, 但原理一致, 在此 不做重复描述。 上面实施例提供的方法中, 如果步骤 S503使用其他 消息实现触发 SGSN释放 Iu连接,可能不会触发步骤 S508和 /或 S510。 此外,本方法中省略了承载更新的过程,即更换 MME和 /或 S-GW后, 需要更新承载信息, 建立新 MME到 S-GW的承载信息, 当 S-GW改 变后, 也要更新承载到 SGSN。
在 UE发起 TAU过程中 , MME的改变也可能会改变实施例三的 具体实现过程, 其中 MME向原 MME (即原来注册 UE的 MME )获 取上下文信息,然后由原 MME向 SGSN发送信令触发 SGSN释放 Iu 连接, 本发明的实施例四中, 一种移动终端位置更新的处理方法, 如 图 6所示, 具体步骤如下:
步骤 S601、 限制信令激活情况下, URA— PCH状态的 UE进入 E-UTRA。
步骤 S602、 UE触发 TAU过程, 向 MME发送 TAU Request消 息, 该 TAU Request消息中携带一个特殊原因( cause )值(或其他指 示)。
步骤 S603、 MME接收到 TAU Request消息后 , 向原 MME发送 Context Request消息获取 UE的上下文,消息中携带一个特定指示(或 发送一个新的显示消息)。
步骤 S604、 原 MME接收 Context Request消息并向 SGSN转发 (因为原 MME纪录有 SGSN的地址信息)。
步骤 S605、 SGSN收到 Context Request消息后, 根据该 Context Request消息中携带的指示,发起 Iu Release Command消息释放该 UE 的 Iu连接。
步骤 S606、 RNC接收到 Iu Release Command消息后, 删除 UE 的 RAN侧上下文, 向 SGSN发送 Iu Release Complete响应消息。
步骤 S607、 SGSN接收到 Iu Release Complete消息后,向原 MME 发送 Context Response消息。
步骤 S608、原 MME接收 Iu Release Complete消息并向 MME转 发。
以下步骤与实施例三中步骤 S507 ~ S515实现过程类似, 在此不 做重复描述。 UE发起的 TAU过程结束后, UE处于 SAE的 IDLE状 态和 3G的 IDLE状态。 当然, 上述 Context Request也可以使用其它 信令消息来触发 SGSN释放 Iu连接。
上述实施例以 UE在 RAU请求消息以及 MME在释放请求消息 中携带触发 SGSN释放 Iu连接为例, 描述了本发明中一种移动终端 位置更新的方法。 除了上述方法外,还可以通过修改 SGSN的方法触 发 SGSN释放 Iu连接, 具体的, 通过修改 SGSN, 使得 SGSN收到 释放请求消息后检查是否存在 UE的 Iu连接, 如果存在则释放 Iu连 接。 这样 UE在 TAU请求消息中可以不必携带触发 SGSN释放 Iu连 接的指示, MME也不必在 Context Request中携带指示来触发 SGSN 释放 Iu连接了。
通过使用本发明实施例提供的方法,使得在限制信令激活情况下 UE进入 E-UTRA后, 发起 TAU过程, 释放该 UE的 Iu连接以及删 除 RAN侧的 UE上下文,使 UE在 3G网络中的状态转为 IDLE状态。 以上以 URA— PCH状态为例介绍了该状态下的 UE在限制信令激
UE的上下文。 如果 CELL— PCH或 CELL— FACH或 CELL— DCH作为 限制信令的 active状态的话,也可能类似本发明针对 URA— PCH的情 况处理, 在这种情况下, 只要把本发明的描述中的 URA— PCH 改为 CELL PCH或 CELL— FACH或 CELL— DCH即可。具体方法不再赘述。
通过使用本发明实施例提供的方法, 实现 PMM— CONNECTED 状态下的 UE进入 E-UTRA后 , 发起 TAU过程 , 并且释放该 UE的 lu连接和 RAN侧的 UE上下文, 使 UE处于 SAE和 3G的 IDLE状 态。
本发明的实施例五中, 一种移动终端位置更新的处理系统, 如图 7所示, 至少包括: 用户终端 10、 MME20、 SGSN30。
用户终端 10, 用于在限制信令激活情况下, 发起 TAU过程, 在 向 MME20 发送的 TAU 请求消息。 所述用户终端 10 处于 PMM— CONNECTED状态。 MME20, 用于接收用户终端 10发送的 TAU请求消息, 向 SGSN30发送请求释放消息。 SGSN30, 用于接收 并根据 MME20发送的请求释放消息, 释放用户终端 10的 lu连接。
上述, 用户终端 10进一步包括: 构造单元 11 , 用于在网络侧激 活限制信令的情况下,构造 TAU请求,该 TAU请求中携带触发 SGSN 释放 lu指示,使得 MME收到该请求后,能与 SGSN交互,使得 SGSN 释放存在的 lu连接。 发送单元 12, 用于将构造单元 11构造的 TAU 请求发送给 MME20。
MME20进一步包括: 接收单元 21 , 用于接收用户终端 10发送 的 TAU请求, 并发送给处理单元 22。 处理单元 22, 用于根据接收到 的 TAU请求构造请求释放, 该请求释放为现有消息携带触发 SGSN 释放 lu连接的指示, 或实现触发 SGSN释放 lu连接的新消息。 发送 单元 23 , 用于将处理单元 22构造的请求释放发送给 SGSN30。
SGSN30进一步包括: 接收单元 31 , 用于接收 MME20的请求释 放, 并发送给判断单元 32。 判断单元 32, 用于判断是否存在 UE的 Iu连接, 并将判断结果发送给处理单元 33。 处理单元 33 , 用于接收 判断单元 32的判断结果, 当判断结果为存在用户终端 10的 Iu连接 时, 释放用户终端 10的 Iu连接。
该系统还包括: RNC40, 用于接收 SGSN30发送的 Iu释放命令 消息, 删除用户终端 10的 RAN侧上下文, 向 SGSN30发送 Iu释放 响应消息。 本发明的实施例六中, 一种用户终端, 用于在限制信令激活情况 下, 发起 TAU过程, 在向 MME发送的 TAU请求消息, 所述用户终 端处于 PMM— CONNECTED状态。 包括: 构造单元, 用于在网络侧 激活限制信令的情况下, 构造 TAU请求, 该 TAU请求中携带触发 SGSN释放 Iu指示。 发送单元, 用于将构造单元构造的 TAU请求发 送给 MME。 其结构以及在网络中与其他设备的关系与上述实施例五 中图 7所示的用户终端相同, 在此不进行重复描述。
本发明的实施例七中,一种 MME,用于接收用户终端发送的 TAU 请求消息, 向 SGSN发送请求释放消息。 包括: 接收单元, 用于接收 用户终端发送的 TAU请求, 并发送给处理单元。 处理单元, 用于根 据接收到的 TAU请求构造请求释放, 该请求释放为现有消息携带触 发 SGSN释放 Iu连接的指示, 或实现触发 SGSN释放 Iu连接的新消 息。 发送单元, 用于将处理单元构造的请求释放发送给 SGSN。 其结 构以及在网络中与其他设备的关系与上述实施例五中图 7 所示的 MME相同, 在此不进行重复描述。
本发明的实施例八中, 一种 SGSN, 用于接收 MME发送的请求 释放消息, 判断是否存在用户终端的 Iu连接, 如果存在, 则释放用 户终端的 Iu连接。 包括: 接收单元, 用于接收 MME20的请求释放, 并发送给判断单元。 判断单元, 用于判断是否存在用户终端的 Iu连 接, 并将判断结果发送给处理单元。 处理单元, 用于接收判断单元的 判断结果, 当判断结果为存在用户终端的 Iu连接时, 释放用户终端 的 III连接。 其结构以及在网络中与其他设备的关系与上述实施例五 中图 7所示的 SGSN相同, 在此不进行重复描述。
通过使用本发明实施例提供的系统和装置,使得在限制信令激活 情况下 PMM— CONNECTED状态的 UE进入 E-UTRA后 , 发起 TAU 过程, 释放该 UE的 lu连接以及删除 RAN侧的 UE上下文, 使 UE 在 3G网络中的状态转为 IDLE状态。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解 到本发明可以通过硬件实现,也可以可借助软件加必要的通用硬件平 台的方式来实现基于这样的理解。
总之, 以上所述仅为本发明的较佳实施例而已, 并非用于限定本 发明的保护范围。 凡在本发明的精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权利要求
1、 一种移动终端位置更新的处理方法, 其特征在于, 包括以下 步骤:
移动性管理实体 MME接收到用户终端 UE发送的跟踪区路由更 新 TAU请求, 向服务 GPRS支持节点 SGSN发送请求释放;
所述 SGSN接收到所述请求释放, 释放所述 UE的 Iu连接。
2、 如权利要求 1所述移动终端位置更新的处理方法, 其特征在 于, 所述 MME接收到 UE发送的 TAU请求, 向 SGSN发送请求释 放之前还包括:
网络侧激活限制信令的情况下,处于 PMM— CONNECTED连接状 态的所述 UE进入演进的接入技术网络 E-UTRA, 向所述 MME发送 TAU请求。
3、如权利要求 1所述移动终端位置更新的处理方法,其特征在于, 所述释放所述 UE的 Iu连接, 具体包括:
所述 SGSN向网络侧的无线网络控制器 RNC发送 Iu释放命令; 所述 RNC接收到所述 SGSN发送的 Iu释放命令后,删除 UE的 RAN 侧上下文, 向所述 SGSN发送 Iu释放响应;
所述 SGSN接收到所述 Iu释放响应, 向所述 MME发送上下文响 应;
所述 MME接收到所述上下文响应后 , 向所述 UE发送 TAU接受。
4、如权利要求 2所述移动终端位置更新的处理方法,其特征在于, 所述 UE向 MME发送的 TAU请求中携带触发所述 SGSN释放 Iu的指示, 所述 SGSN释放 Iu的指示具体为:
一个新的参数或一个特殊原因值; 或者
两个临时移动用户标识 TMSI , —个为 SAE临时移动用户标识 S-TMSI, 另一个为分组临时移动用户标识 P-TMSL
5、如权利要求 1所述移动终端位置更新的处理方法,其特征在于, 所述 MME向所述 SGSN发送的请求释放中携带触发 SGSN释放 Iu连接 的指示。
6、如权利要求 5所述移动终端位置更新的处理方法,其特征在于, 所述请求释放为:
上下文请求 Context Request消息,用于携带触发 SGSN释放 Iu连接 的指示; 或, 为实现触发 SGSN释放 Iu连接的新消息。
7、如权利要求 6所述移动终端位置更新的处理方法,其特征在于, 所述 Context Request消息携带触发 SGSN释放 Iu连接的指示的方式具 体为: 利用 Context Request消息的私有扩展 Private Extension参数中携 带特殊值, 或添加新的参数或参数值。
8、如权利要求 7所述移动终端位置更新的处理方法,其特征在于, 所述 TAU请求中携带的触发 SGSN释放 Iu的指示与所述 Context Request消息中携带的触发 SGSN释放 Iu的指示相同或不同。
9、如权利要求 1所述移动终端位置更新的处理方法,其特征在于, 所述 SGSN接收到所述请求释放, 释放所述 UE的 Iu连接具体为:
所述 SGSN接收到所述请求释放, 检查所述 UE的 Iu连接是否存 在, 如果存在则释放所述 UE的 Iu连接。
10、 一种移动终端位置更新的处理系统, 其特征在于, 包括: 用户终端,用于在网络侧激活限制信令的情况下,构造 TAU请求, 并将所述 TAU请求发送给 MME , 所述 TAU请求中携带触发 SGSN释放 Iu指示;
MME, 用于接收所述用户终端发送的 TAU请求, 并根据所述接 收到的 TAU请求构造请求释放, 并将所述请求释放发送给 SGSN, 所 述请求释放为现有消息携带触发 SGSN释放 Iu连接的指示, 或实现触 发 SGSN释放 Iu连接的新消息;
SGSN,用于接收 MME的请求释放,并判断是否存在 UE的 Iu连接, 当所述判断结果为存在 UE的 Iu连接时, 释放所述 UE的 Iu连接。
11、 一种用户终端, 其特征在于, 包括:
构造单元,用于在网络侧激活限制信令的情况下,构造 TAU请求, 所述 TAU请求中携带触发 SGSN释放 Iu指示; 发送单元, 用于将所述构造单元构造的 TAU请求发送给 MME。
12、 一种 MME, 其特征在于, 包括:
接收单元, 用于接收用户终端发送的 TAU请求, 并发送给处理单 元;
处理单元, 用于根据所述接收到的 TAU请求构造请求释放, 所述 请求释放为现有消息携带触发 SGSN释放 Iu连接的指示, 或实现触发 SGSN释放 Iu连接的新消息;
发送单元, 用于将所述处理单元构造的所述请求释放发送给 SGSN。
13、 一种 SGSN, 其特征在于, 包括:
接收单元, 用于接收 MME的请求释放, 并发送给判断单元; 判断单元,用于判断是否存在 UE的 Iu连接,并将判断结果发送给 处理单元;
处理单元, 用于接收所述判断单元的判断结果, 当所述判断结果 为存在 UE的 Iu连接时, 释放所述 UE的 Iu连接。
PCT/CN2008/072478 2007-09-30 2008-09-23 Procédé, système et dispositif de traitement de mise à jour de position de terminal mobile WO2009046662A1 (fr)

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