WO2013063785A1 - 一种建立Gs关联的方法及装置 - Google Patents

一种建立Gs关联的方法及装置 Download PDF

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Publication number
WO2013063785A1
WO2013063785A1 PCT/CN2011/081746 CN2011081746W WO2013063785A1 WO 2013063785 A1 WO2013063785 A1 WO 2013063785A1 CN 2011081746 W CN2011081746 W CN 2011081746W WO 2013063785 A1 WO2013063785 A1 WO 2013063785A1
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WIPO (PCT)
Prior art keywords
sgsn
vlr
msc
association
released
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PCT/CN2011/081746
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English (en)
French (fr)
Inventor
陈中平
舒林
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.)
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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 JP2014539205A priority Critical patent/JP5802842B2/ja
Priority to CN201180002649.1A priority patent/CN103202087B/zh
Priority to IN994KON2014 priority patent/IN2014KN00994A/en
Priority to EP11874943.1A priority patent/EP2763491B1/en
Priority to PCT/CN2011/081746 priority patent/WO2013063785A1/zh
Publication of WO2013063785A1 publication Critical patent/WO2013063785A1/zh
Priority to US14/263,235 priority patent/US9467961B2/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/005—Multiple registrations, e.g. multihoming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/06—De-registration or detaching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/25—Maintenance of established connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing 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
    • H04W8/06—Registration at serving network Location Register, VLR or user mobility server

Definitions

  • a radio access network (Radio Access Network, hereinafter referred to as RAN) includes an GSM Enhanced Data Rate for GSM Evolution Radio Access Network (GERAN), and a universal mobile communication system for terrestrial wireless access.
  • GERAN GSM Enhanced Data Rate for GSM Evolution Radio Access Network
  • UTRAN Universal Mobile Telecommunications System Territorial Radio Access Network
  • E-UTRAN Evolved UMTS Territorial Radio Access Network
  • UE User Equipment
  • UE User Equipment
  • E-UTRAN Evolved Radio Access
  • ISR Idle mode signal reduction
  • MSC/VLR Mobile Switch Center/Visitor Location Register
  • Embodiments of the present invention provide a method and apparatus for establishing a G s association.
  • a method of establishing a Gs association including:
  • the SGSN sends an update location request to the mobile switching center/visit location register MSC/VLR, so that the SGSN establishes a Gs association with the MSC/VLR for the UE.
  • a service GPRS support node SGSN including:
  • a confirming unit configured to confirm that the SGs association of the user equipment UE in the saving signaling function ISR activation state is released; the sending unit, when the confirming unit confirms that the SG s association is released, is used to move to the mobile switching center/visit location register
  • the MSC/VLR sends an update location request, causing the SGSN to establish a Gs association with the MSC/VLR for the UE.
  • the method and device for establishing a Gs association provided by the embodiment of the present invention, in the ISR activation state, when the SGs association is released, the Gs association can be established in time, so that the UE is not hidden by the MSC/VLR. Separation will not affect the called service of the UE, and enhance the user's service experience.
  • FIG. 1 is a structural diagram of a mobile communication network according to an embodiment of the present invention.
  • FIG. 1 is a schematic flow chart of a method according to a first embodiment of the present invention
  • FIG. 3 is a schematic flow chart of a method according to a second embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a method according to a third embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method according to a fourth embodiment of the present invention.
  • FIG. 6 is a schematic flow chart of a method according to a fifth embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of an SGSN according to a sixth embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of an SGSN according to a seventh embodiment of the present invention.
  • the mobile communication network in the embodiment of the present invention includes a radio access network (Radio Access Network, hereinafter referred to as RAN) and a core network (Core Network, hereinafter referred to as CN).
  • GERAN, UTRAN and E-UTRAN belong to RAN, Mobility Management Entity (MME), Serving GPRS Support Node (SGSN), Mobile Switching Center/Visit Location Register (Mobi le The Switch Center/Visitor Location Register (hereinafter referred to as MSC/VLR), the Serving Gateway (hereinafter referred to as S-GW), and the Packet Data Network Gateway (P-GW) belong to the CN.
  • MME Mobility Management Entity
  • SGSN Serving GPRS Support Node
  • S-GW Serving Gateway
  • P-GW Packet Data Network Gateway
  • the CN is logically divided into a Circuit Switched (CS) domain and a Packet Switched (PS) domain.
  • the MSC/VLR is an entity in the CS domain
  • the SGSN, MME, S-GW, and P-GW are entities in the PS domain.
  • the idle mode UE when the idle mode UE changes the access system, it needs to perform a corresponding mobility management procedure. For example, when the UE in the idle mode accesses the E-UTRAN from the GERAN/UTRAN, the UE initiates the 3 track area update (Tracking).
  • the area update hereinafter referred to as the TAU
  • the E-UTRAN accesses the GERAN/UTRAN
  • the UE initiates a Routing Area Update (RAU) process.
  • RAU Routing Area Update
  • the ISR is selected by the SGSN or the MME to activate and notify the UE in the RAU procedure initiated by the UE or the TAU procedure. Once the ISR is activated, the UE is in the registered routing area.
  • RA Recording Area
  • TA Tracking Area
  • the UE initiates a Combined Attach Procedure or a Combined TA/LA Updating Procedure at the E-UTRAN, and the above process is called a joint process.
  • the MME and the MSC/VLR establish an SGs association for the UE, the MME and the MSC/VLR record that the UE is in association with the SGs, and the MSC/VLR stops the Implicit Detach Timer, and the UE is not implicitly Separation.
  • the joint attach process can also be called a federated registration process.
  • Implicit separation timer stored in MSC/VLR, when UE When the MSC/VLR loses connection, the MSC/VLR starts the implicit separation timer. If the implicit separation timer expires, the UE's MSC/VLR separates the UE. When the UE establishes a connection with the MSC/VLR, the implicit separation timer is stopped and cleared.
  • the so-called implicit separation means that the UE is separated on the network side, but the UE is not notified.
  • the explicit separation is that the network side and the UE explicitly request detachment and notify each other by signaling.
  • the UE initiates a Combined Attach Procedure or a Combined TA/LA Updating Procedure in GERAN/UTRAN
  • the above process is called a Combined Procedure.
  • the joint attach process can also be called a federated registration process.
  • the SGSN and the MSC/VLR establish a Gs association with the UE, and the SGSN and the MSC/VLR record that the UE is in association with the SGs, and the MSC/VLR stops the Implicit Detach Timer, and the UE is not implicitly separated.
  • the MSC/VLR Before the MME and the MSC/VLR create an SGs association for the UE, if the MSC/VLR has created a Gs association with the SGSN for the UE, after the SGs association is established, the MSC/VLR records that the UE is in the SGs association state, and releases the MSC/VLR and the SGSN. For the Gs association, the MSC/VLR records the Gs association in a released state.
  • the MSC/VLR Before the SGSN and the MSC/VLR establish a Gs association for the UE, if the MSC/VLR has established an SGs association with the MN, after the Gs association is established, the MSC/VLR records that the UE is in the Gs association state, and associates the SGs with the MSC. /VLR records that the SGs association is in a released state.
  • the UE first completes the joint registration procedure in GERAN/UTRAN, and the SGSN and the MSC/VLR establish a Gs association for the UE, so the MSC/VLR does not start the implicit separation timer.
  • the UE accesses the E-UTRAN to complete the joint update and activates the ISR.
  • the Gs association is released, and the MSC/VLR and the MME establish an SGs association for the UE. Therefore, the MSC/VLR does not start the implicit separation timer.
  • the UE is in an ISR activation state, and the UE in the idle state moves in the registered RA area and the registered TA area, and the RAU or TAU procedure does not occur due to the access network change.
  • the MME knows that the P-GW deletes the last packet number.
  • the MME sends a detach request message to the MSC/VLR to release the SGs association, MSC/, according to the network (Packet t Da te Ne twork, hereinafter referred to as P )) connection to delete the full load context, or the S-GW restarts to release all bearer contexts.
  • P Packet t Da te Ne twork
  • the VLR starts the implicit separation timer.
  • the MN needs to send a detach request message to the UE.
  • the detach request message sent by the MN cannot be received, so that the SGs association between the MME and the MSC/VLR cannot be reconstructed for the UE. . If the UE is in the GERAN/UTRAN for a long time, the implicit detach timer of the MSC/VLR is timed out, so that the UE may be implicitly separated by the MSC/VLR, making the called service unreachable and affecting the user's service experience.
  • the embodiment of the present invention provides a method and an apparatus for establishing a Gs association, so that the UE is not implicitly separated by the MSC/VLR, and the problem that the called service is unreachable is solved.
  • a first embodiment of the present invention provides a method for establishing a Gs association. As shown in FIG. 2, the method includes:
  • Step 201 Serving the GPRS support node, the SGSN confirms that the user equipment of the UE SR activation state is in the state of saving the signaling function, and the SGs association of the UE is released;
  • the confirming the SGs association is released, specifically: the SGSN confirms that the bearer context is all released.
  • the UE in the I SR active state has the ECM Comb ined Procedure capability of the evolved packet system mobility management, it is confirmed that the SGs association is released.
  • the SGSN when the SGSN receives the detachment notification message from the mobility management entity MME, the acknowledgment SGs association is released, specifically: the SGSN confirms that the UE in the ISR activation state has an evolved packet system mobility management. When the EMM Comb ined Procedure capability is combined, it is confirmed that the SGs association is released.
  • the SGSN receives a separation notification message from the MME.
  • the detach notification message received from the MME further includes: carrying information indicating that the SG s association is released.
  • the information that the UE has the EMM Comb ined Procedure capability is initiated or routed by the UE in the enhanced data rate GSM evolved radio access network/evolved universal mobile communication system terrestrial radio access network GERAN/UTRAN. The zone is provided to the SGSN when it is updated.
  • Step 202 The SGSN sends an update location request to the mobile switching center/visit location register MSC/VLR, so that the SGSN establishes a Gs association with the MSC/VLR for the UE.
  • the method further includes:
  • the SGSN sends a detach request message to the UE, so that the UE initiates a joint registration procedure.
  • the type of the detach request message sent by the SGSN to the UE is indicated as an international mobile subscriber identity separation, so that the UE initiates a joint registration procedure.
  • the SGSN when the UE is in an idle state, before sending the detach request message to the UE, the SGSN sends a paging message to the UE, and the UE is connected to the connection state, so that the UE can receive The detach request message sent by the SGSN.
  • the method for establishing a Gs association provided by the first embodiment of the present invention may establish a Gs association for the UE in time after the SGs association is released, so that the UE is not implicitly separated by the MSC/VLR, and the UE does not Affected the called service of the UE, enhancing the user's service experience.
  • a second embodiment of the present invention provides a method for establishing a Gs association, and the specific steps include:
  • Step 300 The UE completes the joint registration process in GERAN/UTRAN.
  • the UE sends an attach request (Attach Request) message to the SGSN, and the Attach Type of the cell carried in the message is set as a Combined Attach; since the attach is a joint attach, the SGSN sends the update location to the MSC/VLR; The MSC/VLR returns an update location response, and the SGSN and the MSC/VLR establish a Gs association for the UE. At this time, the MSC/VLR does not start the implicit separation timer.
  • the SGSN returns an Attach Accept message to the UE, and the joint attachment is completed.
  • the SGSN obtains information that the UE has the EMM Combined Procedure capability.
  • the SGSN may also obtain information that the UE has the EMM Combined Procedure capability when the UE routing area is updated.
  • Step 301 The UE moves to the E-UTRAN.
  • Step 302 The UE completes the joint update process and activates the I SR.
  • the UE sends a TAU Request message to the MME, and the message Update Type carried in the message is set to Combined TA/LA Updating; because it is a joint update process, the EI sends an update location request to the MSC/VLR, and the MSC/VLR returns the update location to the MN/VLR.
  • the MSC/VLR establishes an SGs association with the UE.
  • the Gs association between the SGSN and the MSC/VLR is released, and the MSC/VLR does not start the implicit separation timer.
  • the MME returns a TAU Accept message to the UE.
  • the medium carrying ISR Activated is used to notify the UE to activate the ISR, thereby completing the joint update process.
  • Step 303 The UE moves to the GERAN/UTRAN and camps on the GERAN/UTRAN.
  • Step 304 The P-GW initiates a last P-connection release process, thereby deleting all bearer contexts. At this time, the P-GW sends a delete bearer request message to the S-GW. In this embodiment, the P-GW sends a delete bearer request message to the S-GW, which is specifically a Delete Bearer Request message.
  • Steps 305a and 305b In the ISR activation scenario, the S-GW simultaneously stores the SGSN and the MN information of the serving UE. Therefore, after receiving the Delete Bearer Request message sent by the P-GW in step 304, the S-GW may send the MME to the MME. And SGSN send Delete the bearer request message.
  • the Delete Bearer Request message sent by the S-GW is a Delete Bearer Request message
  • Step 305 a informs the MME that the last P-Link connection is released
  • Step 305b notifies the SGSN that the last P-Link connection is released, that is, all bearer contexts. released.
  • Step 306 After receiving the Delete Bearer Request message sent by the S-GW in step 305a, the MN confirms that the last P-connection is released, and the EI sends a detach request message to the MSC/VLR, and the detach request message may be
  • Step 307 The SGSN receives the Delete Bearer Request message sent by the S-GW.
  • the SGSN confirms that the all-loaded context is deleted, and the UE in the ISR active state has the EMM.
  • the SGs association is released, and the detach request message is sent to the UE.
  • the type of the detach request message indicates that the international mobile subscriber identity is separated, so that the UE initiates a joint registration procedure.
  • the separation request message is a Detach Request message. If the UE is in an idle state, before performing this step, the SGSN first sends a paging message to the UE.
  • the UE After receiving the paging message, the UE returns a packet data unit PDU or a service request Serv ice Request message to the SGSN to change the UE from the idle state. In the connection state, the UE can then receive the detach request message sent by the SGSN.
  • Step 308 After receiving the detach request message, the UE returns a detach response message to the SGSN and the UE initiates joint registration.
  • the separated response message returned by the UE is a De t a ch Re s s s e message.
  • Step 309 The SGSN sends an update location request to the MSC/VLR.
  • the update location request is an Update Location Request.
  • the MSC/VLR returns an update location response to the SGSN as Update Location Ack:.
  • Step 311 The SGSN establishes a Gs association with the MSC/VLR for the UE.
  • the P-GW triggers the subsequent step if the last P-connection is deleted to release all bearer contexts.
  • the step 303 in the scenario where the S-GW is restarted, when the SGSN learns that the S-GW restarts, the SGSN confirms that all bearer contexts are deleted, and the ISR is activated.
  • the UE has the EMM Combined Procedure capability, it is confirmed that the SGs association is released, and the detach request message is sent to the UE.
  • the type of the detach request message indicates that the international mobile subscriber identity is separated, so that the UE initiates a joint registration procedure.
  • the separation request message is a Detach Request message. If the UE is in an idle state, before performing this step, the SGSN first sends a paging message to the UE. After receiving the paging message, the UE returns a packet data unit PDU or a service request Serv ice Request message to the SGSN to change the UE from the idle state. In the connection state, the UE can then receive the detach request message sent by the SGSN.
  • the subsequent steps are similar to the steps 308, 309, 310 and 311 of the second embodiment and will not be described again.
  • the Gs association between the SGSN and the MSC/VLR is established for the UE in time and accurately, which effectively solves the MSC/VLR startup implicit mode.
  • the separation timer separates the UE implicitly, so that the called service is unreachable.
  • a third embodiment of the present invention provides a method for establishing a Gs association. As shown in FIG. 4, the specific steps include: Step 400: The UE completes the joint registration process in the GERAN/UTRAN.
  • the UE sends an attach request (Attach Request) message to the SGSN, and the Attach Type of the cell carried in the message is set as a Combined Attach; since the attach is a joint attach, the SGSN sends the SGSN to the MSC/VLR.
  • the MSC/VLR sends an update location response, and the SGSN and the MSC/VLR establish a Gs association for the UE. At this time, the MSC/VLR does not start the implicit separation timer.
  • the SGSN returns an Attach Accept message to the UE, and the joint attachment is completed.
  • the SGSN obtains information that the UE has the EMM Combined Procedure capability.
  • the SGSN may also obtain information that the UE has the EMM Combined Procedure capability when the UE routing area is updated.
  • Step 401 The UE moves to the E-UTRAN.
  • Step 402 The UE completes the joint update process and activates the ISR.
  • the UE sends a TAU Request message to the MME, and the message Update Type carried in the message is set to Combined TA/LA Updating; because it is a joint update process, the EI sends an update location request to the MSC/VLR, and the MSC/VLR returns the update location to the MN/VLR.
  • the MSC/VLR establishes an SGs association with the UE.
  • the Gs association between the SGSN and the MSC/VLR is released, and the MSC/VLR does not start the implicit separation timer.
  • the MME returns a TAU Accept message to the UE.
  • the medium carrying ISR Activated is used to notify the UE to activate the ISR, thereby completing the joint update process.
  • Step 403 The UE moves to the GERAN/UTRAN and camps on the GERAN/UTRAN.
  • Step 404 The P-GW initiates the last P-connection release process, thereby deleting all bearer contexts. At this time, the P-GW sends a delete bearer request message to the S-GW. In this embodiment, the P-GW sends a delete bearer request message to the S-GW as a Delete Bearer Request message.
  • Steps 405a and 405b In the ISR activation scenario, the S-GW simultaneously stores the SGSN and the MN information of the serving UE. Therefore, after receiving the Delete Bearer Request message sent by the P-GW in step 404, the S-GW may send the MME to the MME. And the SGSN sends a delete bearer request message.
  • the Delete Bearer Request message sent by the S-GW is a Delete Bearer Request message
  • Step 405a notifies the MME that the last P-Link connection is released
  • Step 405b notifies the SGSN that the last P-Link connection is released. Put, that is, all bearer contexts are released.
  • Step 406 After receiving the Delete Bearer Request message sent by the S-GW in step 405a, it is confirmed that the last P-connection is released, and the E sends a separation request message to the MSC/VLR, and the separation request message may be
  • Step 407 The SGSN receives the delete bearer request message sent by the S-GW.
  • the SGSN confirms that the all-load context is deleted, and the UE in the ISR active state has EMM Combined.
  • the procedure is enabled, that is, the SGs association is confirmed to be released, and the SGSN sends an update location request to the MSC/VLR.
  • the update location request is an Update Location Request.
  • Step 408 The MSC/VLR returns an update location response to the SGSN.
  • the MSC/VLR returns an update location response to the SGSN as Update Location Ack:.
  • Step 409 The SGSN establishes a Gs association with the MSC/VLR for the UE.
  • Step 404 of the third embodiment of the present invention that is, the P-GW triggers the subsequent step if the last P-connection is deleted to release all bearer contexts.
  • the step 403 when the S-GW restarts, when the SGSN learns that the S-GW restarts, the SGSN confirms that all bearer contexts are deleted, and the ISR is activated.
  • the UE has the EMM Combined Procedure capability, it is confirmed that the SGs association is released, and an update location request is sent to the MSC/VLR.
  • the subsequent steps are similar to steps 408 and 409 of the third embodiment, and will not be described again.
  • the network side After the SGs association between the EM and the MSC/VLR is released in the foregoing scenario, the network side establishes the Gs association between the SGSN and the MSC/VLR for the UE in time, which reduces the signaling interaction process and effectively solves the problem.
  • MSC/VLR startup implicit score Off-timer the UE is implicitly separated, so that the called service is unreachable.
  • a fourth embodiment of the present invention provides a method for establishing a Gs association. As shown in FIG. 5, the specific steps include: Step 500: The UE completes the joint registration process in the GERAN/UTRAN.
  • the UE sends an attach request (Attach Request) message to the SGSN, and the Attach Type of the cell carried in the message is set as a Combined Attach; since the attach is a joint attach, the SGSN sends an update location request to the MSC/VLR, The MSC/VLR returns an update location response, and the SGSN and the MSC/VLR establish a Gs association for the UE. At this time, the MSC/VLR does not start the implicit separation timer.
  • the SGSN returns an Attach Accept message to the UE, and the joint attach is completed.
  • the SGSN obtains the information that the UE has the EMM Combined Procedure capability, and the SGSN can also obtain the information that the UE has the EMM Combined Procedure capability when the UE routing area is updated.
  • Step 501 The UE moves to the E-UTRAN.
  • Step 502 The UE completes the joint update process and activates the ISR.
  • the UE sends a TAU Request message to the MME, and the message Update Type carried in the message is set to Combined TA/LA Updating; because it is a joint update process, the EI sends an update location request to the MSC/VLR, and the MSC/VLR returns the update location to the MN/VLR.
  • the MSC/VLR establishes an SGs association with the UE.
  • the Gs association between the SGSN and the MSC/VLR is released, and the MSC/VLR does not start the implicit separation timer.
  • the MME returns a TAU Accept message to the UE.
  • the medium carrying ISR Activated is used to notify the UE to activate the ISR, thereby completing the joint update process.
  • Step 503 The UE moves to the GERAN/UTRAN and camps on the GERAN/UTRAN.
  • Step 504 The UE reactivates a Packet Data Protocol (PDP) in GERAN/UTRAN.
  • PDP Packet Data Protocol
  • Step 505 The P-GW initiates a P-picture connection release procedure, and the P-GW sends a delete bearer request message to the S-GW.
  • the P-GW sends a Delete Bearer Request message to the S-GW as a Delete Bearer Request message.
  • Step 506 In the ISR activation scenario, the S-GW saves the E-mail information of the serving UE. Therefore, after receiving the Delete Bearer Request message sent by the P-GW in step 505, the S-GW may send and delete the message to the E-E. Bear the request message.
  • the delete bearer request message sent by the S-GW is a Delete Bearer Request message, and the last MME connection of the MME is notified to be released.
  • Step 507 After receiving the Delete Bearer Request message sent by the S-GW in step 506, the MN confirms that the last P-connection is released, and the EI sends a detach request message to the MSC/VLR, and the detach request message may be
  • Step 508 The MME sends a detachment notification message to the SGSN to notify the SGSN that the SGs association has been released.
  • the detachment notification message may also carry information to indicate that the SGs association is released, that is, the SGs association is from the association state to the release state.
  • the detach notification message sent by the MME to the SGSN is Detach Notification.
  • Step 509 After receiving the separation notification message sent by the SG, the SGSN is Detach in this embodiment.
  • the SGSN After the Notificati on, the SGSN confirms that the UE in the ISR active state has the ECM Combined Procedure capability of the evolved packet system mobility management, that is, confirms that the SGs association is released.
  • the SGSN sends a detach request message to the UE, and the type indication of the detach request message may be separated for the international mobile subscriber identity to enable the UE to initiate a joint registration procedure.
  • the detach request message sent by the SGSN to the UE in this embodiment is specifically a De tach Request message. If the UE is in an idle state, before performing this step, the SGSN first sends a paging message to the UE.
  • the UE After receiving the paging message, the UE returns a packet data unit PDU or a service request Serv ice Request message to the SGSN to make the UE idle. Switch to the connected state, then the UE can Receive the Detach Request message sent by the SGSN.
  • Step 510 After receiving the Detach Request message, the UE returns a separation response message to the SGSN, and initiates a joint registration.
  • the separation response message returned by the UE in this embodiment is specifically a Detach Response message.
  • Step 511 The SGSN sends an update location request to the MSC/VLR.
  • the update location request may specifically be an Update Location Request.
  • Step 512 The MSC/VLR returns an update location response to the SGSN.
  • the update location response returned by the MSC/VLR to the SGSN is specifically an Update Location Ack.
  • Step 513 The SGSN establishes a Gs association with the MSC/VLR for the UE.
  • Step 505 of the fourth embodiment of the present invention that is, the P-GW initiates a P-connection release process to trigger a subsequent step.
  • the MME sends a detach request message to the MSC/VLR, and the detach request message may be SGsAP- EPS-DETACH-INDICATION, which causes the MSC/VLR to release the SGs association and initiate an implicit separation timer.
  • the subsequent steps are similar to the steps 508, 509, 510, 511 and 512 of the fourth embodiment and will not be described again.
  • the SGSN and the MME are not synchronized, and the Gs between the SGSN and the MSC/VLR is established for the UE in a timely and accurate manner.
  • the association effectively solves the problem that the MSC/VLR starts the implicit separation timer and implicitly separates the UE, so that the called service is unreachable.
  • a fifth embodiment of the present invention provides a method for establishing a Gs association. As shown in FIG. 6, the specific steps include: Step 600: The UE completes the joint registration process in the GERAN/UTRAN.
  • the UE sends an Attach Request message to the SGSN, and the cell attachment type carried in the message (Attach) Type) is set as Combined Attach; Since the attachment is a joint attachment, the SGSN sends an update location request to the MSC/VLR, and the MSC/VLR returns an update location response, and the SGSN and the MSC/VLR establish a Gs association for the UE, at this time, the MSC /VLR does not start the implicit split timer. The SGSN returns an Attach Accept message to the UE, and the joint attachment is completed. The SGSN obtains the information that the UE has the EMM Combined Procedure capability, and the SGSN can also obtain the information that the UE has the EMM Combined Procedure capability when the UE routing area is updated.
  • Step 601 The UE moves to the E-UTRAN.
  • Step 602 The UE completes the joint update process and activates the ISR.
  • the UE sends a TAU Request message to the MME, and the message Update Type carried in the message is set to Combined TA/LA Updating; because it is a joint update, the MME sends an update location request to the MSC/VLR, and the MSC/VLR returns an update location response to the MME.
  • the MSC/VLR and the MME establish an SGs association for the UE.
  • the Gs association between the SGSN and the MSC/VLR is released, and the MSC/VLR does not start the implicit separation timer.
  • the MME returns a TAU Accept message to the UE, and the message carries the message.
  • the element ISR Activated is used to notify the UE to activate the ISR, thereby completing the joint update process.
  • Step 603 The UE moves to the GERAN/UTRAN and camps on the GERAN/UTRAN.
  • Step 604 The UE reactivates a PDP in the GERAN/UTRAN.
  • Step 605 The P-GW initiates a P-picture connection release procedure, and the P-GW sends a delete bearer request message to the S-GW.
  • the P-GW sends a delete bearer request message to the S-GW, which is specifically a Delete Bearer Request message.
  • Step 606 In the ISR activation scenario, the S-GW saves the E-mail information of the serving UE. Therefore, after receiving the Delete Bearer Request message sent by the P-GW in step 605, the S-GW may send and delete the message to the E-E. Bear the request message.
  • the delete bearer request message sent by the S-GW is a Delete Bearer Request message, and the MME is notified last. A P-connect is released.
  • Step 607 After receiving the Delete Bearer Request message sent by the S-GW in step 606, the MN confirms that the last P-connection is released, and the EI sends a detach request message to the MSC/VLR, and the detach request message may be
  • Step 608 The MME sends a detachment notification message to the SGSN to notify the SGSN that the SGs association has been released.
  • the detachment notification message may further carry information to indicate that the SGs association is released, that is, the SGs association is from the association state to the release state.
  • the detach notification message sent by the MME to the SGSN is Detach Notification.
  • Step 609 After the SGSN receives the detachment notification message sent by the MNSN, the detachment notification in the embodiment is specifically De tach Notification, and the SGSN confirms that the UE in the ISR activation state has the ECM Combined Procedure capability of the Evolved Packet System Mobile Management Joint Process , that is, confirm that the SGs association is released.
  • the SGSN sends an update location request to the MSC/VLR.
  • the update location request may specifically be an Update Location Request.
  • Step 610 The MSC/VLR returns an update location response to the SGSN.
  • the MSC/VLR returns an update location response to the SGSN as Update Location Ack:.
  • Step 611 The SGSN establishes a Gs association with the MSC/VLR for the UE.
  • Step 605 of the fifth embodiment of the present invention that is, the P-GW initiates a P-link connection release procedure to trigger a subsequent step.
  • the MME sends a detach request message to the MSC/VLR, where the detach request message may be SGsAP- EPS-DETACH-INDICATION, thereby causing the MSC/VLR to release the SGs association and start the implicit separation timer.
  • the subsequent steps are similar to the steps 608, 609, 610 and 611 of the fifth embodiment, and are not described again.
  • the network side establishes the Gs association between the SGSN and the MSC/VLR for the UE in time.
  • the signaling interaction process is reduced, and the problem that the MSC/VLR starts the implicit separation timer and the UE is implicitly separated, so that the called service is unreachable is effectively solved.
  • a sixth embodiment of the present invention provides an SGSN apparatus.
  • the specific structure includes a confirming unit 701 and a transmitting unit 702.
  • the merging unit 701 is configured to confirm that the SG s association of the user equipment UE in the saving signaling function I SR activation state is released; and the sending unit 702 is used to notify the mobile switching center/visit when the clarifying unit confirms that the SGs association is released.
  • the location register MSC/VLR sends an update location request to enable the SGSN to establish a Gs association with the MSC/VLR for the UE.
  • the sending unit 702 may be further configured to send a separate request message to the UE before the sending of the update location request to the MSC/VLR, so that the UE initiates a joint registration process.
  • the type indication of the detach request message sent by the sending unit 702 may be the detachment of the international mobile subscriber identity, and the UE receiving the detach request message initiates a joint registration procedure.
  • the sending unit 702 is further configured to send a paging message to the UE before sending the detach request message to the UE.
  • the UE After receiving the paging message sent by the sending unit 702, the UE returns the packet data unit to the SGSN.
  • the PDU or Service Request Serve Reques t message causes the UE to transition from the idle state to the connected state, and then the UE can receive the detach request message sent by the SGSN.
  • the sending unit 702 is configured to send a detach request message to the UE before sending the update location request to the MSC/VLR, and if the UE is in an idle state, send the paging message to the UE before sending the detach request message to the UE, where the device is Optional features.
  • the SGSN device provided in this embodiment may establish a Gs association for the UE in time after the SGs association is released, so that the UE is not implicitly separated by the MSC/VLR, and does not affect the called UE.
  • Business enhanced users Business experience.
  • a seventh embodiment of the present invention provides an SGSN apparatus. As shown in FIG. 8, the specific structure includes a receiving unit 801, an acknowledgment unit 802, and a transmitting unit 803.
  • the receiving unit 801 is configured to receive the delete bearer request message from the serving gateway S-GW, or learn that the serving gateway S-GW restarts, or receive the disconnection notification message from the mobility management entity.
  • the acknowledgment unit 802 is configured to confirm that the SGs association of the user equipment UE in the saving signaling function I SR activation state is released.
  • the sending unit 803 is configured to send an update location request to the MSC/VLR when the acknowledgment unit confirms that the SGs association is released, so that the MSC/VLR establishes a Gs association with the SGSN for the UE.
  • the receiving unit 801 is further configured to receive the EMM Comb ined sent by the UE to the SGSN when the enhanced data rate GSM evolved radio access network/evolved universal mobile communication system terrestrial radio access network GERAN/UTRAN initiates joint attach or routing area update. Procedure capability information.
  • the acknowledgment unit 802 is specifically configured to confirm that the bearer context is all released and the UE in the I SR active state has the evolved packet system mobility management association.
  • the process EMM Comb ined Procedure capability confirms that the SGs association is released.
  • the acknowledgment unit 802 is specifically configured to confirm that the UE in the ISR activation state has the EPC Comb ined Procedure capability, and then confirm that the SGs association is released.
  • the sending unit 803 may be further configured to send a detach request message to the UE, before the MSC/VLR sends the update location request, to enable the UE to initiate a joint registration process.
  • the type of the separation request message sent by the sending unit 702 to the UE is indicated as international.
  • the mobile subscriber identity is separated, and the UE receiving the detach request message initiates a joint registration procedure.
  • the sending unit 803 is further configured to send a paging message to the UE before sending the detach request message to the UE. After receiving the paging message sent by the sending unit 803, the UE returns the packet data unit to the SGSN.
  • the PDU or service request Serv i ce Reques t message causes the UE to transition from the idle state to the connected state, and then the UE can receive the detach request message sent by the SGSN.
  • the sending unit 803 is configured to send a detach request message to the UE before sending the update location request to the MSC/VLR. If the UE is in an idle state, before sending the detach request message to the UE, the sending unit 803 is configured to send the paging message to the UE, so that the UE turns to The connection status is an optional operation function of this unit.
  • the SGSN device provided in this embodiment may establish a Gs association for the UE in time after the SGs association is released, so that the UE is not implicitly separated by the MSC/VLR, and the UE is not affected. Calling a business enhances the user's business experience.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • a computer device which may be a personal computer, server, or network device, etc.
  • the foregoing storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM, Random Acces s Memory), a magnetic disk or an optical disk, and the like, and the program code can be stored. Medium.

Abstract

本发明的实施例提供了一种建立Gs关联的方法，包括：当服务GPRS支持节点SGSN确认处于节约信令功能ISR激活状态的用户设备UE的SGs关联被释放时，所述SGSN向移动交换中心/拜访位置寄存器MSC/VLR发送更新位置请求，使所述SGSN与所述MSC/VLR为所述UE建立Gs关联。本发明实施例还提供了一种SGSN。本发明实施例可以在UE处于ISR激活状态下，SGs关联被释放之后，及时建立Gs关联，从而UE不会被MSC/VLR隐式分离，不会影响到UE的被叫业务，增强了用户的业务体验。

Description

说 明 书 一种建立 Gs关联的方法及装置
技术领域 本发明涉及通信技术， 特别是涉及建立 Gs关联的方法及装置。 背景技术 无线接入网络 (Radio Access Network, 以下简称 RAN) 包括增强型数据速率 GSM演 进无线接入网（GSM Enhanced Data Rate for GSM Evolution Radio Access Network, 以下简称 GERAN ) , 通用移动通信系统陆地无线接入网 （ Universal Mobile Telecommunications System Territorial Radio Access Network, 以下简称 UTRAN )和 演进的通用移动通信系统陆地无线接入网 （Evolved UMTS Territorial Radio Access Network, 以下简称 E-UTRAN )。
用户设备 (User Equipment, 以下简称 UE)首先在 GERAN/UTRAN完成联合注册。 然后 UE移动到 E-UTRAN完成联合更新并激活节约信令功能 ( Idle mode signalling reduction, 以下简称 ISR)。 当 UE再次移动到 GERAN/UTRAN并驻留在 GERAN/UTRAN中， 可能会被移动 交换中心 /拜访位置寄存器（Mobile Switch Center/Visitor Location Register, 以下简 称 MSC/VLR) 隐式分离。
发明人发现现有技术中， 当上述场景发生时， 处于正常网络覆盖中的 UE并不会感知被 MSC/VLR 隐式分离， 因此将导致被 MSC/VLR分离之后， 被叫业务不可达， 影响到用户的业 务体验。 发明内容 在下文中给出了关于本发明的简要概述，以便提供关于本发明的某些方面的基本理解。 应当理解， 这个概述并不是关于本发明的穷举性概述。 它并不是意图确定本发明的关键或 重要部分， 也不是意图限定本发明的范围。 其目的仅仅是以简化的形式给出某些概念， 以 此作为稍后论述的更详细描述的前序。
本发明的实施例提供了一种建立 G s关联的方法及装置。
一种建立 Gs关联的方法， 包括：
当服务 GPRS支持节点 SGSN确认处于节约信令功能 I SR激活状态的用户设备 UE的 SG s关联 被释放时；
所述 SGSN向移动交换中心 /拜访位置寄存器 MSC/VLR发送更新位置请求， 使所述 SGSN与 所述 MSC/VLR为所述 UE建立 Gs关联。
一种服务 GPRS支持节点 SGSN, 包括：
确认单元， 用于确认处于节约信令功能 ISR激活状态的用户设备 UE的 SGs关联被释放； 发送单元， 当确认单元确认 SG s关联被释放时， 用于向移动交换中心 /拜访位置寄存器
MSC/VLR发送更新位置请求， 使所述 SGSN与所述 MSC/VLR为所述 UE建立 Gs关联。
由上述技术方案可知， 本发明实施例提供的建立 Gs关联的方法及装置， 用户设备在 ISR 激活状态下， 当 SGs关联被释放之后， 能够及时建立 Gs关联， 从而 UE不会被 MSC/VLR隐式分 离， 不会影响到 UE的被叫业务， 增强了用户的业务体验。
附图说明
为了更清楚地说明本发明实施例中的技术方案， 下面将对实施例描述中所使用的附图 作一简地介绍， 显而易见地， 下面描述中的附图是本发明的一些实施例， 对于本领域普通 技术人员来讲， 在不付出创造性劳动的前提下， 还可以根据这些附图获得其他的附图。
图 1为本发明实施例移动通信网络结构图；
图 1为本发明第一实施例的方法流程示意图；
图 3为本发明第二实施例的方法流程示意图；
图 4为本发明第三实施例的方法流程示意图；
图 5为本发明第四实施例的方法流程示意图；
图 6为本发明第五实施例的方法流程示意图；
图 7为本发明第六实施例的 SGSN的结构示意图；
图 8为本发明第七实施例的 SGSN的结构示意图；
具体实施例
在下文中将结合附图对本发明的示范性实施例进行描述。 为了清楚和简明起见， 在说 明书中并未描述实际实施方式的所有特征。 然而， 应该了解， 在开发任何这种实际实施例 的过程中必须做出很多特定于实施方式的决定， 以便实现开发人员的具体目标， 并且这些 决定可能会随着实施方式的不同而有所改变。
如图 1所示， 本发明实施例中移动通信网络包括无线接入网络（Radio Access Network, 以下简称 RAN)和核心网 （Core Network, 以下简称 CN) 两部分。 GERAN、 UTRAN和 E-UTRAN 属于 RAN, 移动管理实体（Mobility Management Entity, 以下简称 MME)、 服务 GPRS支持节 点 (Serving GPRS Support Node, 以下简称 SGSN )、移动交换中心 /拜访位置寄存器（ Mobi le Switch Center/Visitor Location Register, 以下简称 MSC/VLR )、 月艮务网关 （Serving Gateway, 以下简称 S-GW)和分组数据网络网关 （Packet Data Network Gateway, 以下简 称 P-GW)属于 CN。 CN从逻辑上分为电路交换（Circuit Switched, 以下简称 CS)域和分组 交换（Packet Switched, 以下简称 PS)域。 MSC/VLR是 CS域中的实体， SGSN、 MME、 S-GW 和 P-GW是 PS域中的实体。
在移动网络中， 空闲模式的 UE改变接入系统的时候需要执行相应的移动性管理流程， 比如当处于空闲模式的 UE从 GERAN/UTRAN接入 E-UTRAN, UE发起 3艮踪区更新 (Tracking Area Update,以下简称 TAU)流程； 从 E-UTRAN接入 GERAN/UTRAN时， UE发起路由区更新 ( Routing Area Update, 以下简称 RAU) 流程。 为解决空闲模式下 UE在 GERAN/UTRAN和 E-UTRAN之间频 繁切换而导致发生大量的上述移动性管理流程,造成信令资源风暴，在网络中引入了节约信 令功能 ( Idle Mode Signalling Reduction, 以下简称 ISR)。 ISR是在 UE发起的 RAU流程或 者 TAU流程中， 由 SGSN或者 MME选择激活并通知给 UE。 一旦 ISR激活， UE在注册的路由区域
(Routing Area, 以下简称 RA)和注册的 3艮踪区域 (Tracking Area,以下简称 TA)移动， 不会因为接入系统改变而发生 RAU或者 TAU流程。
UE在 E-UTRAN发起联合附着流程 (Combined Attach Procedure)或者联合的跟踪区 / 位置区更新流程 (Combined TA/LA Updating Procedure), 将上述流程称为联合流程
(Combined Procedure), MME与 MSC/VLR为 UE建立 SGs关联， 则 MME与 MSC/VLR记录该 UE处于 SGs关联， MSC/VLR停止隐式分离定时器（Implicit Detach Timer), UE不会被隐式分离。 联合附着流程， 也可以称为联合注册流程。 隐式分离定时器， 保存在 MSC/VLR中， 当 UE与 MSC/VLR失去连接的时候， MSC/VLR启动隐式分离定时器， 如果隐式分离定时器超时， 贝' J MSC/VLR分离 UE。 当 UE和 MSC/VLR建立连接的时候， 停止隐式分离定时器并清零。 所谓隐式 分离， 是指网络侧分离 UE, 但没有通知 UE; 与之相对的显式分离， 是指网络侧和 UE明确地 请求去附着， 并互相用信令通知对方。
同理， 若 UE在 GERAN/UTRAN发起联合附着流程 (Combined Attach Procedure)或者联 合的 3艮踪区 /位置区更新流程 (Combined TA/LA Updating Procedure), 将上述流程称为联 合流程（Combined Procedure )。 联合附着流程， 也可以称为联合注册流程。 SGSN与 MSC/VLR 为 UE建立 Gs关联， 则 SGSN与 MSC/VLR记录该 UE处于 SGs关联， MSC/VLR停止隐式分离定时器 ( Implicit Detach Timer), UE不会被隐式分离。
MME与 MSC/VLR为 UE创建 SGs关联之前若 MSC/VLR已经与 SGSN为 UE创建了 Gs关联， 则 SGs 关联建立之后， MSC/VLR记录 UE处于 SGs关联状态， 并释放 MSC/VLR与 SGSN之间的 Gs关联， MSC/VLR记录 Gs关联处于释放状态。 同理， SGSN与 MSC/VLR为 UE创建 Gs关联之前若 MSC/VLR 已经与丽 E建立了 SGs关联， 则 Gs关联建立之后， MSC/VLR记录 UE处于 Gs关联状态， 并将 SGs 关联释放， MSC/VLR记录 SGs关联处于释放状态。
UE首先在 GERAN/UTRAN完成联合注册流程， SGSN与 MSC/VLR为 UE建立 Gs关联， 因此 MSC/VLR不启动隐式分离定时器。 此时， UE接入到 E-UTRAN完成联合更新并激活 ISR, 此时 Gs 关联被释放， MSC/VLR与 MME为 UE建立 SGs关联， 因此， MSC/VLR也不会启动隐式分离定时器。 另外， UE处于 ISR激活状态， 处于空闲态的 UE在注册的 RA区域和注册的 TA区域移动， 不会因 为接入网络改变而发生 RAU或者 TAU流程。 在这种情况下， MME获知 P-GW删除最后一个分组数 据网 （Packe t Da t e Ne twork,以下简称 P丽）连接从而删除全部 载上下文， 或者 S-GW发生 重启释放全部承载上下文， 则 MME向 MSC/VLR发送分离请求消息， 释放 SGs关联， MSC/VLR启 动隐式分离定时器。 另外丽 E需要发送分离请求消息给 UE , 如果此时 UE驻留在 GERAN/UTRAN 中， 则无法接收到丽 E发送的分离请求消息， 从而不能为 UE重建 MME与 MSC/VLR之间的 SGs关 联。 UE长时间处于 GERAN/UTRAN中将导致 MSC/VLR保存的隐式分离定时器超时， 从而 UE可能 被 MSC/VLR隐式分离， 使被叫业务不可达， 影响用户的业务体验。
在这种场景下， 本发明实施例提供了建立 Gs关联的方法及装置， 从而 UE不会被 MSC/VLR 隐式分离， 解决了被叫业务不可达的问题。
本发明第一实施例提供了一种建立 Gs关联的方法， 如图 2所示， 包括：
步骤 201： 服务 GPRS支持节点 SGSN确认处于节约信令功能 I SR激活状态的用户设备 UE的 SGs关联被释放；
可选地， 当所述 SGSN从服务网关 S-GW接收删除承载请求消息或者获知所述 S-GW重启时， 所述确认 SGs关联被释放， 具体包括： 所述 SGSN确认承载上下文全部被释放且所述处于 I SR 激活状态的 UE具有演进型分组系统移动管理联合流程 EMM Comb ined Procedure能力时， 即 确认所述 SGs关联被释放。
可选地， 当所述 SGSN从移动管理实体 MME接收分离通知消息时， 所述确认 SGs关联被释 放， 具体包括： 所述 SGSN确认所述处于 I SR激活状态的 UE具有演进型分组系统移动管理联合 流程 EMM Comb ined Procedure能力时， 即确认所述 SGs关联被释放。
具体地， 当所述 MME接收服务网关 S-GW发送的删除承载请求并释放所述 SGs关联时或者 所述 MME获知所述 S-GW重启并释放所述 SGs关联时， 所述 SGSN从所述 MME接收分离通知消息。 可选地， 从所述 MME接收的分离通知消息还包括： 携带指示所述 SG s关联被释放的信息。 并且可选地， 所述 UE具有 EMM Comb ined Procedure能力的信息由所述 UE在增强型数据 速率 GSM演进无线接入网 /演进的通用移动通信系统陆地无线接入网 GERAN/UTRAN发起附着 或者路由区更新时向所述 SGSN提供。
步骤 202 : 所述 SGSN向移动交换中心 /拜访位置寄存器 MSC/VLR发送更新位置请求， 使所 述 SGSN与所述 MSC/VLR为所述 UE建立 Gs关联。
可选地， SGSN向 MSC/VLR发送更新位置请求之前还包括：
所述 SGSN向所述 UE发送分离请求消息， 使所述 UE发起联合注册流程。
可选地， 所述 SGSN向所述 UE发送的分离请求消息的类型指示为国际移动用户识别码分 离， 以使所述 UE发起联合注册流程。
可选地， 当所述 UE处于空闲状态时， 所述 SGSN向所述 UE发送分离请求消息之前， 发送 寻呼消息给所述 UE , 使所述 UE转连接态， 以使所述 UE能够接收所述 SGSN发送的分离请求消 息。
本发明第一实施例提供的建立 Gs关联的方法， 可以在 UE处于 ISR激活状态下， SGs关联 被释放之后， 及时为 UE建立 Gs关联， 从而 UE不会被 MSC/VLR隐式分离， 不会影响到 UE的被叫 业务， 增强了用户的业务体验。
本发明第二实施例提供了一种建立 Gs关联的方法， 具体步骤包括：
步骤 300： UE在 GERAN/UTRAN中完成联合注册流程。 UE向 SGSN发送附着请求（ Attach Request )消息， 消息中所携带信元附着类型（Attach Type)设置为联合附着 （Combined Attach)； 由于该附着是联合附着， SGSN向 MSC/VLR;^ 送更新位置请求， MSC/VLR返回更新位置响应， SGSN与 MSC/VLR为 UE建立 Gs关联，此时 MSC/VLR 不启动隐式分离定时器。 SGSN向 UE返回附着接收（Attach Accept ) 消息， 联合附着完成。 SGSN获得 UE具有 EMM Combined Procedure能力的信息。 SGSN也可以在 UE路由区更新时获得 UE具有 EMM Combined Procedure能力的信息。
步骤 301: UE移到 E-UTRAN。
步骤 302： UE完成联合更新流程并激活 I SR。
UE向 MME发送 TAU Request消息， 消息中所携带信元 Update Type设置为 Combined TA/LA Updating; 由于是联合更新流程， 丽 E向 MSC/VLR发送更新位置请求， MSC/VLR向丽 E返回更 新位置响应， MSC/VLR与丽 E为 UE建立 SGs关联， 步骤 300中 SGSN与 MSC/VLR之间的 Gs关联被释 放， MSC/VLR不启动隐式分离定时器; MME向 UE返回 TAU Accept消息， 消息中携带信元 ISR Activated用于通知 UE激活 ISR, 从而完成联合更新流程。
步骤 303： UE移到 GERAN/UTRAN并驻留在 GERAN/UTRAN。
步骤 304: P-GW发起最后一个 P丽连接释放流程， 从而删除全部承载上下文。 此时 P-GW 向 S-GW发送删除承载请求消息。 在本实施例中， P-GW向 S-GW发送删除承载请求消息具体为 Delete Bearer Request消息。
步骤 305a和 305b: 在 ISR激活场景下， S-GW同时保存有服务 UE的 SGSN和丽 E信息， 因此 在接收到步骤 304中 P-GW发送的 Delete Bearer Request消息后， S-GW可以向 MME和 SGSN发送 删除承载请求消息。在本实施例中， S-GW发送的删除承载请求消息为 Delete Bearer Request 消息， 步骤 305 a通知 MME最后一个 P丽连接被释放， 步骤 305b通知 SGSN最后一个 P丽连接被释 放， 即全部承载上下文被释放。
步骤 305 a和 305 b之间没有先后顺序之分。
步骤 306: 丽 E接收步骤 305a中 S-GW发送的 Delete Bearer Request消息后， 确认最后一 个 P丽连接被释放， 丽 E向 MSC/VLR发送分离请求消息， 该分离请求消息可以为
SGsAP-EPS-DETACH-INDICATION, 从而使 MSC/VLR释放 SGs关联， 并且启动隐式分离定时器。
步骤 307： SGSN接收到 S-GW发送来的删除承载请求消息， 本实施例中具体为 De le t e Bearer Request消息， 则 SGSN确认全部 载上下文被删除， 且所述处于 ISR激活状态的 UE 具有 EMM Combined Procedure能力时， 即确认 SGs关联被释放， 向 UE发送分离请求消息， 可 选地， 该分离请求消息的类型指示为国际移动用户识别码分离， 使所述 UE发起联合注册流 程。 本实施例中该分离请求消息为 Detach Request消息。 如果 UE处于空闲状态， 在执行本 步骤之前， SGSN先向 UE发出寻呼消息， UE接收到该寻呼消息后， 向 SGSN返回分组数据单元 PDU或服务请求 Serv ice Request消息使 UE由空闲状态转为连接状态， 然后 UE可以接收 SGSN 发送的分离请求消息。
步骤 308: UE接收到该分离请求消息后，向 SGSN返回分离响应消息并且 UE发起联合注册。 本实施例中该 UE返回的分离响应消息为 De t a ch Re s pon s e消息。
步骤 309: SGSN向 MSC/VLR发送更新位置请求。 本实施例中， 该更新位置请求为 Update Location Request。 步骤 310: MSC/VLR向 SGSN返回更新位置响应， 本实施例中， MSC/VLR向 SGSN返回更新位 置响应为 Update Location Ack：。
步骤 311: SGSN与 MSC/VLR为 UE建立 Gs关联。
本发明第二实施例步骤 304 , 即 P-GW删除最后一个 P丽连接从而释放全部承载上下文的 情况下触发后续步骤。在本发明另一实施例中，在步骤 303之后，对 S-GW发生重启的场景， 当 SGSN获知 S-GW重启时， 则 SGSN确认全部承载上下文被删除， 且所述处于 I SR激活状态的 UE 具有 EMM Combined Procedure能力时， 即确认 SGs关联被释放， 向 UE发送分离请求消息， 可 选地， 该分离请求消息的类型指示为国际移动用户识别码分离， 使所述 UE发起联合注册流 程。 本实施例中该分离请求消息为 Detach Request消息。 如果 UE处于空闲状态， 在执行本 步骤之前， SGSN先向 UE发出寻呼消息， UE接收到该寻呼消息后， 向 SGSN返回分组数据单元 PDU或服务请求 Serv ice Request消息使 UE由空闲状态转为连接状态， 然后 UE可以接收 SGSN 发送的分离请求消息。 后续步骤与第二实施例步骤 308、 309、 310及 311类似， 不再赘述。
本发明实施例在上述场景下丽 E与 MSC/VLR之间的 SGs关联被释放后， 及时、 准确地为 UE 建立 SGSN与 MSC/VLR之间的 Gs关联， 有效解决了 MSC/VLR启动隐式分离定时器， 将 UE隐式分 离， 从而被叫业务不可达的问题。
本发明第三实施例提供了一种建立 Gs关联的方法， 如图 4所示， 具体步骤包括： 步骤 400: UE在 GERAN/UTRAN中完成联合注册流程。
UE向 SGSN发送附着请求（ Attach Request )消息， 消息中所携带信元附着类型（Attach Type)设置为联合附着 （Combined Attach)； 由于该附着是联合附着， SGSN向 MSC/VLR发 送更新位置请求， MSC/VLR返回更新位置响应， SGSN与 MSC/VLR为 UE建立 Gs关联，此时 MSC/VLR 不启动隐式分离定时器。 SGSN向 UE返回附着接收（Attach Accept ) 消息， 联合附着完成。 SGSN获得 UE具有 EMM Combined Procedure能力的信息。 SGSN也可以在 UE路由区更新时获得 UE具有 EMM Combined Procedure能力的信息。
步骤 401: UE移到 E-UTRAN。
步骤 402: UE完成联合更新流程并激活 ISR。
UE向 MME发送 TAU Request消息， 消息中所携带信元 Update Type设置为 Combined TA/LA Updating; 由于是联合更新流程， 丽 E向 MSC/VLR发送更新位置请求， MSC/VLR向丽 E返回更 新位置响应， MSC/VLR与丽 E为 UE建立 SGs关联， 步骤 400中 SGSN与 MSC/VLR之间的 Gs关联被释 放， MSC/VLR不启动隐式分离定时器; MME向 UE返回 TAU Accept消息， 消息中携带信元 ISR Activated用于通知 UE激活 ISR, 从而完成联合更新流程。
步骤 403: UE移到 GERAN/UTRAN并驻留在 GERAN/UTRAN。
步骤 404: P-GW发起最后一个 P丽连接释放流程， 从而删除全部承载上下文， 此时 P-GW 向 S-GW发送删除承载请求消息。在本实施例中， P-GW向 S-GW发送删除承载请求消息为 Delete Bearer Request消息。
步骤 405a和 405b: 在 ISR激活场景下， S-GW同时保存有服务 UE的 SGSN和丽 E信息， 因此 在接收到步骤 404中 P-GW发送的 Delete Bearer Request消息后， S-GW可以向 MME和 SGSN发送 删除承载请求消息。在本实施例中， S-GW发送的删除承载请求消息为 Delete Bearer Request 消息， 步骤 405a通知 MME最后一个 P丽连接被释放，步骤 405b通知 SGSN最后一个 P丽连接被释 放， 即全部承载上下文被释放。
步骤 405a和 405b之间没有先后顺序之分。
步骤 406: 丽 E接收步骤 405a中 S-GW发送的 Delete Bearer Request消息后， 确认最后一 个 P丽连接被释放， 丽 E向 MSC/VLR发送分离请求消息， 该分离请求消息可以为
SGsAP-EPS-DETACH-INDICATION, 从而使 MSC/VLR释放 SGs关联， 并且启动隐式分离定时器。
步骤 407： SGSN接收到 S-GW发送来的删除承载请求消息， 本实施例中具体为 De lete Bearer Request消息， 则 SGSN确认全部 载上下文被删除， 且所述处于 ISR激活状态的 UE 具有 EMM Combined Procedure能力时， 即确认 SGs关联被释放， SGSN向 MSC/VLR发送更新位 置请求。 本实施例中， 该更新位置请求为 Update Location Request。
步骤 408: MSC/VLR向 SGSN返回更新位置响应， 本实施例中， MSC/VLR向 SGSN返回更新位 置响应为 Update Location Ack：。
步骤 409: SGSN与 MSC/VLR为 UE建立 Gs关联。
本发明第三实施例步骤 404 , 即 P-GW删除最后一个 P丽连接从而释放全部承载上下文的 情况下触发后续步骤。在本发明另一实施例中，在步骤 403之后，对 S-GW发生重启的场景， 当 SGSN获知 S-GW重启时， 则 SGSN确认全部承载上下文被删除， 且所述处于 I SR激活状态的 UE 具有 EMM Combined Procedure能力时， 即确认 SGs关联被释放， 向 MSC/VLR发送更新位置请 求。 后续步骤与第三实施例步骤 408及 409类似， 不再赘述。
本发明实施例在上述场景下丽 E与 MSC/VLR之间的 SGs关联被释放后， 网络侧及时为 UE 建立 SGSN与 MSC/VLR之间的 Gs关联， 减少了信令交互流程， 有效解决了 MSC/VLR启动隐式分 离定时器， 将 UE隐式分离， 从而被叫业务不可达的问题。
本发明第四实施例提供了一种建立 Gs关联的方法， 如图 5所示， 具体步骤包括： 步骤 500: UE在 GERAN/UTRAN中完成联合注册流程。
UE向 SGSN发送附着请求（ Attach Request )消息， 消息中所携带信元附着类型（Attach Type)设置为联合附着 （Combined Attach)； 由于该附着是联合附着， SGSN向 MSC/VLR发 送更新位置请求， MSC/VLR返回更新位置响应， SGSN与 MSC/VLR为 UE建立 Gs关联，此时 MSC/VLR 不启动隐式分离定时器。 SGSN向 UE返回附着接收（Attach Accept ) 消息， 联合附着完成。 SGSN获得 UE具有 EMM Combined Procedure能力的信息， SGSN也可以在 UE路由区更新时获得 UE具有 EMM Combined Procedure能力的信息。
步骤 501: UE移到 E-UTRAN。
步骤 502： UE完成联合更新流程并激活 ISR。
UE向 MME发送 TAU Request消息， 消息中所携带信元 Update Type设置为 Combined TA/LA Updating; 由于是联合更新流程， 丽 E向 MSC/VLR发送更新位置请求， MSC/VLR向丽 E返回更 新位置响应， MSC/VLR与丽 E为 UE建立 SGs关联， 步骤 500中 SGSN与 MSC/VLR之间的 Gs关联被释 放， MSC/VLR不启动隐式分离定时器; MME向 UE返回 TAU Accept消息， 消息中携带信元 ISR Activated用于通知 UE激活 ISR, 从而完成联合更新流程。
步骤 503: UE移到 GERAN/UTRAN并驻留在 GERAN/UTRAN。
步骤 504: UE在 GERAN/UTRAN重新激活一个分组数据协议（Packet Data Protocol , 以 下简称 PDP)。 步骤 505: P-GW发起 P画连接释放流程， P-GW向 S-GW发送删除承载请求消息。 在本实施 例中， P-GW向 S-GW发送删除承载请求消息为 Delete Bearer Request消息。
步骤 506:在 ISR激活场景下， S-GW保存有服务 UE的丽 E信息， 因此8_0¥在接收到步骤505 中 P-GW发送的 Delete Bearer Request消息后, S-GW可以向丽 E发送删除承载请求消息。 在 本实施例中， S-GW发送的删除承载请求消息为 Delete Bearer Request消息，通知 MME最后一 个 P丽连接被释放。
步骤 507: 丽 E接收步骤 506中 S-GW发送的 Delete Bearer Request消息后， 确认最后一 个 P丽连接被释放， 丽 E向 MSC/VLR发送分离请求消息， 该分离请求消息可以为
SGsAP-EPS-DETACH-INDICATION, 从而使 MSC/VLR释放 SGs关联， 并且启动隐式分离定时器。
步骤 508: MME向 SGSN发送分离通知消息， 通知 SGSN SGs关联已经被释放， 该分离通知 消息中还可以携带信息用于指示 SGs关联被释放， 即 SGs关联从关联状态到释放状态。 本实 施例中， MME向 SGSN发送的分离通知消息为 Detach Notification
步骤 509: SGSN接收到丽 E发送的分离通知消息后， 即本实施例中的 Detach
Notificati on后， SGSN确认处于 I SR激活状态的 UE具有演进型分组系统移动管理联合流程 EMM Combined Procedure能力时， 即确认 SGs关联被释放。 SGSN向 UE发送分离请求消息， 该 分离请求消息的类型指示可以为国际移动用户识别码分离， 以使 UE发起联合注册流程。 本 实施例中 SGSN向 UE发送的分离请求消息具体为 De tach Request消息。 如果 UE处于空闲状态， 在执行本步骤之前， SGSN先向 UE发出寻呼消息， UE接收到该寻呼消息后， UE向 SGSN返回分 组数据单元 PDU或服务请求 Serv ice Request消息使 UE由空闲状态转为连接状态， 然后 UE可 以接收 SGSN发送的 Detach Request消息。
步骤 510: UE接收到 Detach Request消息后， 向 SGSN返回分离响应消息， 并发起联合注 册。 本实施例中该 UE返回的分离响应消息具体为 Detach Response消息。
步骤 511: SGSN向 MSC/VLR发送更新位置请求。 本实施例中， 该更新位置请求具体可以 为 Update Location Request。
步骤 512: MSC/VLR向 SGSN返回更新位置响应， 本实施例中， MSC/VLR向 SGSN返回的更新 位置响应具体为 Update Location Ack。
步骤 513: SGSN与 MSC/VLR为 UE建立 Gs关联。
本发明第四实施例步骤 505 , 即 P-GW发起 P丽连接释放流程触发后续步骤。 在本发明另 一实施例中，在步骤 504之后，对 S-GW发生重启的场景，当 MME获知 S-GW重启时，ΜΜΕ向 MSC/VLR 发送分离请求消息，该分离请求消息可以为 SGsAP-EPS-DETACH-INDICATION,从而使 MSC/VLR 释放 SGs关联， 并且启动隐式分离定时器。 后续步骤与第四实施例步骤 508、 509、 510、 511 及 512类似， 不再赘述。
本发明实施例在上述场景下丽 E与 MSC/VLR之间的 SGs关联被释放后， 在 SGSN与 MME承载 不同步的情况下，及时、准确地为 UE建立 SGSN与 MSC/VLR之间的 Gs关联，有效解决了 MSC/VLR 启动隐式分离定时器， 将 UE隐式分离， 从而被叫业务不可达的问题。
本发明第五实施例提供了一种建立 Gs关联的方法， 如图 6所示， 具体步骤包括： 步骤 600: UE在 GERAN/UTRAN中完成联合注册流程。
UE向 SGSN发送附着请求（ Attach Request )消息， 消息中所携带信元附着类型（Attach Type)设置为联合附着 （Combined Attach)； 由于该附着是联合附着， SGSN向 MSC/VLR 发送更新位置请求， MSC/VLR返回更新位置响应， SGSN与 MSC/VLR为 UE建立 Gs关联， 此时 MSC/VLR不启动隐式分离定时器。 SGSN向 UE返回附着接收（Attach Accept ) 消息， 联合附 着完成。 SGSN获得 UE具有 EMM Combined Procedure能力的信息， SGSN也可以在 UE路由区更 新时获得 UE具有 EMM Combined Procedure能力的信息。
步骤 601: UE移到 E-UTRAN。
步骤 602： UE完成联合更新流程并激活 ISR。
UE向 MME发送 TAU Request消息， 消息中所携带信元 Update Type设置为 Combined TA/LA Updating; 由于是联合更新， 丽 E向 MSC/VLR发送更新位置请求， MSC/VLR向 MME返回更新位 置响应， MSC/VLR与 MME为 UE建立 SGs关联， 步骤 600中 SGSN与 MSC/VLR之间的 Gs关联被释放， MSC/VLR不启动隐式分离定时器； MME向 UE返回 TAU Accept消息， 消息中携带信元 ISR Activated用于通知 UE激活 ISR, 从而完成联合更新流程。
步骤 603: UE移到 GERAN/UTRAN并驻留在 GERAN/UTRAN。
步骤 604: UE在 GERAN/UTRAN重新激活一个 PDP。
步骤 605: P-GW发起 P画连接释放流程， P-GW向 S-GW发送删除承载请求消息。 在本实施 例中， P-GW向 S-GW发送删除承载请求消息具体为 Delete Bearer Request消息。
步骤 606:在 ISR激活场景下， S-GW保存有服务 UE的丽 E信息， 因此8_0¥在接收到步骤605 中 P-GW发送的 Delete Bearer Request消息后, S-GW可以向丽 E发送删除承载请求消息。 在 本实施例中， S-GW发送的删除承载请求消息为 Delete Bearer Request消息，通知 MME 最后 一个 P丽连接被释放。
步骤 607: 丽 E接收步骤 606中 S-GW发送的 Delete Bearer Request消息后， 确认最后一 个 P丽连接被释放， 丽 E向 MSC/VLR发送分离请求消息， 该分离请求消息可以为
SGsAP-EPS-DETACH-INDICATION, 从而使 MSC/VLR释放 SGs关联， 并且启动隐式分离定时器。
步骤 608: MME向 SGSN发送分离通知消息， 通知 SGSN SGs关联已经被释放， 该分离通知 消息中还可以携带信息用于指示 SGs关联被释放， 即 SGs关联从关联状态到释放状态。 本实 施例中， MME向 SGSN发送的分离通知消息为 Detach Notification
步骤 609： SGSN接收到丽 E发送的分离通知消息后， 本实施例中分离通知具体为 De tach Notification, SGSN确认处于 I SR激活状态的 UE具有演进型分组系统移动管理联合流程 EMM Combined Procedure能力时， 即确认 SGs关联被释放。 SGSN向 MSC/VLR发送更新位置请求。 本实施例中， 该更新位置请求具体可以为 Update Location Request。
步骤 610: MSC/VLR向 SGSN返回更新位置响应， 本实施例中， MSC/VLR向 SGSN返回更新位 置响应为 Update Location Ack：。
步骤 611: SGSN与 MSC/VLR为 UE建立 Gs关联。
本发明第五实施例步骤 605, 即 P-GW发起 P丽连接释放流程触发后续步骤。 在本发明另 一实施例中， 在步骤 604之后， 对 S-GW发生重启的场景， 当 MME获知 S-GW重启时， MME向 MSC/VLR发送分离请求消息， 该分离请求消息可以为 SGsAP-EPS-DETACH-INDICATION, 从而 使 MSC/VLR释放 SGs关联， 并且启动隐式分离定时器。 后续步骤与第五实施例步骤 608、 609、 610和 611类似, 不再赘述。 本发明实施例在上述场景下丽 E与 MSC/VLR之间的 SGs关联被释放后， 在 SGSN与 MME承载 不同步的情况下，网络侧及时为 UE建立 SGSN与 MSC/VLR之间的 Gs关联，减少了信令交互流程， 有效解决了 MSC/VLR启动隐式分离定时器， 将 UE隐式分离， 从而被叫业务不可达的问题。
本发明第六实施例提供了一种 SGSN装置， 如图 7所示， 具体结构包括确认单元 701和发 送单元 702。其中确认单元 701 ,用于确认处于节约信令功能 I SR激活状态的用户设备 UE的 SG s 关联被释放； 发送单元 702 , 当确认单元确认 SGs关联被释放时， 用于向移动交换中心 /拜访 位置寄存器 MSC/VLR发送更新位置请求， 使该 SGSN与 MSC/VLR为 UE建立 Gs关联。
其中发送单元 702 , 在向 MSC/VLR发送更新位置请求之前， 还可以用于向 UE发送分离请 求消息， 使所述 UE发起联合注册流程。 发送单元 702发送的分离请求消息的类型指示可以为 国际移动用户识别码分离， 使接收到该分离请求消息的 UE发起联合注册流程。
如果 UE处于空闲状态， 发送单元 702在向 UE发送分离请求消息之前， 还进一步用于发送 寻呼消息给该 UE,该 UE接收到发送单元 702发送的寻呼消息之后， 向 SGSN返回分组数据单元 PDU或服务请求 Serv ice Reques t消息使 UE由空闲状态转为连接状态， 然后 UE能够接收 SGSN 发送的分离请求消息。
发送单元 702在向 MSC/VLR发送更新位置请求之前用于向 UE发送分离请求消息， 如果 UE 处于空闲状态， 在向 UE发送分离请求消息前先用于发送寻呼消息给 UE , 均为本装置的可选 功能。
本实施例提供的 SGSN装置， 可以在 UE处于 ISR激活状态下， SGs关联被释放之后， 及时 为 UE建立 Gs关联， 从而 UE不会被 MSC/VLR隐式分离， 不会影响到 UE的被叫业务， 增强了用户 的业务体验。
本发明第七实施例提供了一种 SGSN装置， 如图 8所示， 具体结构包括接收单元 801、 确 认单元 802和发送单元 803。
其中接收单元 801用于从服务网关 S-GW接收删除承载请求消息，或者获知服务网关 S-GW 重启， 或者从移动管理实体丽 E接收分离通知消息。
确认单元 802用于确认处于节约信令功能 I SR激活状态的用户设备 UE的 SGs关联被释放。 发送单元 803 , 当确认单元确认 SGs关联被释放时， 用于向 MSC/VLR发送更新位置请求， 使 MSC/VLR与 SGSN为 UE建立 Gs关联。
另外接收单元 801还用于接收 UE在增强型数据速率 GSM演进无线接入网 /演进的通用移 动通信系统陆地无线接入网 GERAN/UTRAN发起联合附着或者路由区更新时向 SGSN发送的 EMM Comb ined Procedure能力的信息。
当接收单元 801从 S-GW接收删除承载请求时， 或者获知 S-GW重启时， 确认单元 802具体 用于确认承载上下文全部被释放且处于 I SR激活状态的 UE具有演进型分组系统移动管理联 合流程 EMM Comb ined Procedure能力， 则确认 SGs关联被释放。
当接收单元 801从 MME接收分离通知消息， 确认单元 802具体用于确认处于 I SR激活状态 的 UE具有演进型分组系统移动管理联合流程 E丽 Comb ined Procedure能力， 则确认 SGs关联 被释放。
发送单元 803 , 在向 MSC/VLR发送更新位置请求之前， 还可以用于向 UE发送分离请求消 息， 使所述 UE发起联合注册流程。 发送单元 702向 UE发送的分离请求消息的类型指示为国际 移动用户识别码分离， 使接收到该分离请求消息的 UE发起联合注册流程。
如果 UE处于空闲状态， 发送单元 803在向 UE发送分离请求消息之前， 还进一步用于发送 寻呼消息给该 UE,该 UE接收到发送单元 803发送的寻呼消息之后， 向 SGSN返回分组数据单元
PDU或服务请求 Serv i ce Reques t消息使 UE由空闲状态转为连接状态， 然后 UE能够接收 SGSN 发送的分离请求消息。
发送单元 803在向 MSC/VLR发送更新位置请求之前用于向 UE发送分离请求消息， 如果 UE 处于空闲状态， 在向 UE发送分离请求消息前先用于发送寻呼消息给 UE , 使 UE转为连接状态， 均为本装置的可选操作功能。
本实施例提供的 SGSN装置， 可以在 UE处于 I SR激活状态下， SGs关联被释放之后， 及时 为 UE建立 Gs关联， 从而 UE不会被 MSC/VLR隐式分离， 不会影响到 UE的被叫业务， 增强了用户 的业务体验。
本领域普通技术人员可以意识到， 结合本文中所公开的实施例描述的各示例的单元及 算法步骤， 能够以电子硬件、 计算机软件或者二者的结合来实现， 为了清楚地说明硬件和 软件的可互换性， 在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。 这些 功能究竟以硬件还是软件方式来执行， 取决于技术方案的特定应用和设计约束条件。 专业 技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能， 但是这种实现不应 认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到， 为描述的方便和简洁， 上述描述的系统、 装 置和单元的具体工作过程， 可以参考前述方法实施例中的对应过程， 在此不再赘述。 在本申请所提供的几个实施例中， 应该理解到， 所揭露的系统、 装置和方法， 可以通 过其它的方式实现。 例如， 以上所描述的装置实施例仅仅是示意性的， 例如， 所述单元的 划分， 仅仅为一种逻辑功能划分， 实际实现时可以有另外的划分方式， 例如多个单元或组 件可以结合或者可以集成到另一个系统， 或一些特征可以忽略， 或不执行。 另一点， 所显 示或讨论的相互之间的耦合或直接 合或通信连接可以是通过一些接口， 装置或单元的间 接耦合或通信连接， 可以是电性， 机械或其它的形式。
另外， 在本发明各个实施例中的各功能单元可以集成在一个处理单元中， 也可以是各 个单元单独物理存在， 也可以两个或两个以上单元集成在一个单元中。 上述集成的单元既 可以釆用硬件的形式实现， 也可以釆用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时， 可 以存储在一个计算机可读取存储介质中。 基于这样的理解， 本发明的技术方案本质上或者 说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出 来，该计算机软件产品存储在一个存储介质中， 包括若干指令用以使得一台计算机设备（可 以是个人计算机， 服务器， 或者网络设备等）执行本发明各个实施例所述方法的全部或部 分步骤。 而前述的存储介质包括： U盘、 移动硬盘、 只读存储器（ROM, Read-On ly Memory ), 随机存取存储器（RAM, Random Acces s Memory ), 磁碟或者光盘等各种可以存储程序代码 的介质。
以上所述， 仅为本发明的具体实施方式， 但本发明的保护范围并不局限于此， 任何熟 悉本技术领域的技术人员在本发明揭露的技术范围内， 可轻易想到变化或替换， 都应涵盖 在本发明的保护范围之内。 因此， 本发明的保护范围应以所述权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种建立 Gs关联的方法， 其特征在于， 包括：
当服务 GPRS支持节点 SGSN确认处于节约信令功能 ISR激活状态的用户设备 UE的 SGs 关联被释放时；
所述 SGSN向移动交换中心 /拜访位置寄存器 MSC/VLR发送更新位置请求， 使所述 SGSN 与所述 MSC/VLR为所述 UE建立 Gs关联。
1、 根据权利要求 1所述的方法， 其特征在于， 所述 SGSN向所述 MSC/VLR发送更新位 置请求之前还包括：
所述 SGSN向所述 UE发送分离请求消息， 使所述 UE发起联合注册流程。
3、 根据权利要求 1或 1所述的方法， 其特征在于， 当所述 SGSN从服务网关 S-GW接收 删除承载请求消息或者获知所述 S-GW重启时， 所述确认 SGs关联被释放， 具体包括： 所述 SGSN确认承载上下文全部被释放且所述处于 ISR激活状态的 UE具有演进型分组系统移动 管理联合流程 EMM Comb ined Procedure能力时， 即确认所述 SGs关联被释放。
4、 根据权利要求 1或 2所述的方法， 其特征在于， 当所述 SGSN从移动管理实体 MME 接收分离通知消息时， 所述确认 SGs关联被释放， 具体包括：
所述 SGSN确认所述处于 ISR激活状态的 UE具有演进型分组系统移动管理联合流程 EMM Comb ined Procedure能力时， 即确认所述 SGs关联被释放。
5、 根据权利要求 4所述的方法， 其特征在于， 当所述丽 E接收服务网关 S-GW发送的 删除承载请求消息或者所述 MME获知所述 S-GW重启时， 所述 SGSN从所述 MME接收分离通 知消息。
6、 根据权利要求 4或 5所述的方法， 其特征在于， 从所述丽 E接收的分离通知消息 还包括： 携带指示所述 SGs关联被释放的信息。
7、 根据权利要求 3至 6任一所述的方法， 其特征在于， 所述 UE具有 EMM Comb ined Procedure能力的信息由所述 UE在增强型数据速率 GSM演进无线接入网 /演进的通用移动 通信系统陆地无线接入网 GERAN/UTRAN发起联合附着或者路由区更新时向所述 SGSN提供。
8、 根据权利要求 2-7任一所述的方法， 其特征在于， 所述 SGSN向所述 UE发送的分离 请求消息的类型指示为国际移动用户识别码分离， 以使所述 UE发起联合注册流程。
9、 根据权利要求 2-8任一所述的方法， 其特征在于， 当所述 UE处于空闲状态时， 所 述 SGSN向所述 UE发送分离请求消息之前， 发送寻呼消息给所述 UE , 使所述 UE转连接态， 以使所述 UE能够接收所述 SGSN发送的分离请求消息。
10、 一种服务 GPRS支持节点 SGSN , 其特征在于， 包括：
确认单元，用于确认处于节约信令功能 I SR激活状态的用户设备 UE的 SGs关联被释放； 发送单元， 当确认单元确认 SG s关联被释放时，用于向移动交换中心 /拜访位置寄存器 MSC/VLR发送更新位置请求， 使所述 SGSN与所述 MSC/VLR为所述 UE建立 Gs关联。
11、 根据权利要求 10所述的 SGSN , 其特征在于， 所述发送单元向所述 MSC/VLR发送 更新位置请求之前还用于
向所述 UE发送分离请求消息， 使所述 UE发起联合注册流程。
12、 根据权利要求 10或 11所述的 SGSN , 其特征在于， 所述 SGSN还包括接收单元， 用于：
从服务网关 S-GW接收删除承载请求消息；
获知服务网关 S-GW重启； 或
从移动管理实体丽 E接收分离通知消息。
1 3、 根据权利要求 12所述的 SGSN , 其特征在于， 当所述接收单元从所述 S-GW接收删 除承载请求消息或者获知所述 S-GW重启时， 所述确认单元具体用于： 确认承载上下文全部 被释放且所述处于 I SR激活状态的 UE具有演进型分组系统移动管理联合流程 E丽 Comb ined Procedure能力， 则确认所述 SGs关联被释放。
14、 根据权利要求 12所述的 SGSN , 其特征在于， 当所述接收单元从所述丽 E接收分 离通知消息时， 所述确认单元具体用于：
确认所述处于 I SR激活状态的 UE具有演进型分组系统移动管理联合流程 EMM Comb ined Procedure能力， 则确认所述 SGs关联被释放。
15、 根据权利要求 14所述的 SGSN , 从所述丽 E接收的分离通知消息还包括： 携带指 示所述 SGs关联被释放的信息。
16、 根据权利要求 12至 15任一所述的 SGSN , 其特征在于， 所述接收单元还用于接收 所述 UE在增强型数据速率 GSM演进无线接入网 /演进的通用移动通信系统陆地无线接入网 GERAN/UTRAN发起联合附着或者路由区更新时向所述 SGSN发送的 EMM Comb ined Procedure 能力的信息。
17、 根据权利要求 11至 16任一所述的 SGSN , 其特征在于， 所述发送单元向所述 UE 发送的分离请求消息的类型指示为国际移动用户识别码分离，以使所述 UE发起联合注册流 程。
18、 根据权利要求 1 1至 17任一所述的 SGSN , 其特征在于， 当所述 UE处于空闲状态 时， 所述发送单元向所述 UE发送分离请求消息之前， 进一步用于发送寻呼消息给所述 UE , 使所述 UE转连接态， 以使所述 UE能够接收所述 SGSN发送的分离请求消息。
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