WO2013104111A1 - 业务恢复方法和移动管理网元 - Google Patents

业务恢复方法和移动管理网元 Download PDF

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Publication number
WO2013104111A1
WO2013104111A1 PCT/CN2012/070181 CN2012070181W WO2013104111A1 WO 2013104111 A1 WO2013104111 A1 WO 2013104111A1 CN 2012070181 W CN2012070181 W CN 2012070181W WO 2013104111 A1 WO2013104111 A1 WO 2013104111A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
network element
management network
mobility management
service
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Application number
PCT/CN2012/070181
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English (en)
French (fr)
Inventor
陆峰
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2012/070181 priority Critical patent/WO2013104111A1/zh
Priority to CN201280000183.6A priority patent/CN103299672B/zh
Publication of WO2013104111A1 publication Critical patent/WO2013104111A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/04Arrangements for maintaining operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16Gateway arrangements

Definitions

  • the present invention relates to communication technologies, and in particular, to a service recovery method and a mobility management network element. Background technique
  • 3GPP 3rd Generation Partnership Project
  • LTE Long Term Evolution
  • 3G Third Generation mobile communication
  • PS Packet Switch
  • a packet data network (PDN) connection can be regarded as a collection of bearers or multiple bearers with the same Access Point Name (APN).
  • PDN packet data network
  • APN Access Point Name
  • the PDN Connection Set Identifier (hereinafter referred to as CSID) is a node, for example: Mobility Management Entity (hereinafter referred to as MME), Serving GPRS Support Node (hereinafter referred to as SGSN)
  • MME Mobility Management Entity
  • SGSN Serving GPRS Support Node
  • SGW Serving GPRS Support Node
  • PGW packet data network gateway
  • UE User Equipment
  • GPRS is an abbreviation of General Packet Radio Service.
  • the CSID global identifier (Fully Qualified CSID; hereinafter referred to as FQ-CSID) is a combination of the identifier of the node to which the CSID is assigned and the CSID. Different nodes can be assigned the same CSID. In order to distinguish the CSIDs assigned by different nodes, the global ID of the CSID is introduced.
  • the MME, SGW, and PGW are in the respective UEs.
  • the MME FQ-CSID information, the SGW FQ-CSID information, and the PGW FQ-CSID information corresponding to the PDN connection are stored in the PDN connection context.
  • ISR Idle mode signaling reduction
  • GERAN GSM EDGE Radio Access Network
  • Evolved UTRAN evolved UTRAN
  • GSM is the abbreviation of Global System for Mobile communications
  • EDGE is the abbreviation of Enhanced Data Rate for GSM Evolution.
  • UMTS is Abbreviation for Universal Mobile Telecommunications System.
  • the UE needs to register to both the MME in E-UTRAN and the SGSN in UTRAN/GERAN (abbreviated as 2/3G).
  • the SGW simultaneously stores the connection information of the MME and the connection information of the SGSN.
  • the MME and the SGSN mutually store the connection information of the other party, that is, the MME stores the connection information of the SGSN, and the SGSN stores the connection information of the MME.
  • the SGW simultaneously stores the connection information of the MME and the connection information of the SGSN to the SGW, which means that the ISR is activated; the MME and the SGSN mutually store the connection information of the other party.
  • the MME and the SGSN mean ISR activation with each other.
  • the SGW when the SGW receives the downlink user plane or control plane data of the UE, the SGW triggers the corresponding MME and the SGSN to page the UE according to the saved connection information of the MME and the connection information of the SGSN. Therefore, regardless of whether the current UE resides in E-UTRAN or UTRAN/GERAN, the UE can respond to the paging message of the corresponding network (ie, the called service of the UE is reachable) on the network where the UE resides.
  • the paging message of the corresponding network ie, the called service of the UE is reachable
  • the SGW When a partial failure occurs in the SGW, the SGW notifies the MME and the PGW of the failed SGW FQ-CSID by deleting the Connection Set Request message; the MME and the PGW are retrieved based on the received SGW FQ-CSID.
  • the PDN connection context acknowledges the affected PDN connection and deletes it locally, and then returns a Delete Connection Set Response message to the SGW.
  • Partial Failure refers to the loss of a considerable portion of the PDN connections stored in the node (MME, SGW, or PGW) due to software or hardware problems.
  • VoIP voice over Internet Protocol
  • the present invention provides a service recovery method and a mobility management network element, so as to restore the service of the user equipment after the service gateway is partially faulty, and ensure that the service of the user equipment is normal.
  • An aspect of the present invention provides a service recovery method, including:
  • the first mobility management network element associated with the ISR is configured to receive a first message, where the first message is used to notify the first serving gateway where the first mobility management network element user equipment is located to be partially faulty;
  • the first mobility management network element performs service recovery on the user equipment by paging the user equipment, or the first mobility management network element receives a request message sent by the user equipment, and the user equipment is sent to the user equipment. Perform business recovery.
  • Another aspect of the present invention provides a mobility management network element, where the mobility management network element is a first mobility management network element associated with an idle mode restriction signaling ISR, and includes:
  • a receiving module configured to receive a first message, where the first message is used to notify a first service gateway where the first mobility management network element user equipment is located to be partially faulty;
  • a recovery module configured to perform service recovery on the user equipment by paging the user equipment And receiving, by the user equipment, a request message sent by the user equipment, and performing service recovery on the user equipment.
  • the technical effect of the first aspect of the present invention is: the first mobile management network element associated with the ISR receives the first message, where the first message is used to notify the first service gateway where the first mobility management network element user equipment is located to partially fail.
  • the first mobility management network element performs service recovery on the user equipment by paging the user equipment or receiving a request message sent by the user equipment. Therefore, when a part of the service gateway fails, the service of the user equipment is normal, and the user experience can be improved.
  • the technical effect of another aspect of the present invention is: the receiving module receives the first message, where the first message is used to notify the first serving gateway where the first mobility management network element user equipment is located to partially fail; and then the recovery module reports the user by paging
  • the device receives the request message sent by the user equipment, and performs service recovery on the user equipment. Therefore, when the service gateway is partially faulty, the service of the user equipment is guaranteed to be normal, thereby improving the user experience.
  • FIG. 1 is a flowchart of an embodiment of a service recovery method according to the present invention.
  • FIG. 2 is a flowchart of another embodiment of a service recovery method according to the present invention.
  • FIG. 3 is a flowchart of still another embodiment of a service recovery method according to the present invention.
  • FIG. 4 is a flowchart of still another embodiment of a service recovery method according to the present invention.
  • FIG. 5 is a flowchart of still another embodiment of a service recovery method according to the present invention.
  • FIG. 6 is a schematic structural diagram of an embodiment of a mobility management network element according to the present invention. detailed description
  • FIG. 1 is a flowchart of an embodiment of a service recovery method according to the present invention. As shown in FIG. 1, the service recovery method may include:
  • Step 101 The first mobility management network element associated with the ISR receives the first message, where the first message is used to notify the first SGW where the first mobility management network element user equipment is located to be partially faulty.
  • the first mobility management network element in this embodiment may be an SGSN and/or an MME.
  • the first mobile management network element associated with the ISR receives the first message, where the MME receives the delete PDN connection set request message sent by the first SGW, and the MME requests the deleted PDN connection set according to the
  • the SGW-FQ-CSID carried by the message queries the context of the locally reserved user equipment, if the SGW-FQ-CSID recorded in the context of the user equipment reserved by the MME is the same as the SGW-FQ-CSID sent by the first SGW to the MME.
  • the context of the user equipment is then known to be affected by the partial failure of the first SGW.
  • the MME may further query the context of the user equipment, obtain information about the SGSN associated with the ISR, and send a notification message to the SGSN according to the information of the SGSN, to indicate that the first SGW is partially faulty.
  • the first mobile management network element associated with the ISR may receive the first message:
  • the SGSN receives the notification message sent by the MME associated with the ISR.
  • the notification message carries the first identifier of the user equipment and/or the indication information that the first SGW is partially faulty.
  • the first identifier of the user equipment may be an identifier of the user equipment, such as an International Mobile Subscriber Identification Number (IMSI).
  • IMSI International Mobile Subscriber Identification Number
  • the first mobile management network element may receive the first message: the SGSN receives the third paging message sent by the second SGW, where the second serving gateway includes the first SGW or the first The third paging message is sent by the second SGW to the SGSN after receiving the paging message sent by the PGW, where the third paging message carries the first SGW. An indication of a partial failure.
  • Step 102 The first mobility management network element performs service recovery on the user equipment by paging the user equipment, or the first mobility management network element receives the request message sent by the user equipment, and performs service recovery on the user equipment.
  • the first mobility management network element may perform the service recovery on the user equipment by paging the user equipment: the first mobility management network element sends a second paging message to the user equipment, where The second paging message is used to indicate that the user equipment initiates the service request process. Then, the first mobility management network element receives the service request message sent by the user equipment, and performs a first service recovery process to perform service recovery on the user equipment.
  • the context of the device is reserved by the first mobility management network element.
  • the first mobility management network element may further receive the third paging message sent by the second SGW, where the second SGW includes the first SGW or The third paging message is sent by the second SGW to the first mobility management network element after receiving the paging message sent by the PGW.
  • the third paging message carries the first identifier of the user equipment and/or the indication information that the first SGW generates a partial fault.
  • the first identifier of the user equipment may be an identifier that the IMSI or the like can uniquely identify the user equipment.
  • the first mobility management network element receives the request message sent by the user equipment
  • the service recovery of the user equipment may be: the first mobility management network element receives the service request message sent by the user equipment, The first service recovery process is performed to perform service recovery on the user equipment.
  • the context of the user equipment is reserved by the first mobility management network element.
  • the first mobility management network element receives the service request message sent by the user equipment, and performs the first service recovery process, and the service recovery of the user equipment may be: the first mobility management network element performs the service gateway migration process. Then, the first mobility management network element sends a temporary identity re-allocation command message to the user equipment, and triggers the user equipment to perform a tracking area update process or a routing area update process; the first mobility management network element passes the tracking area update process or The routing area update process indicates that the user equipment ISR is deactivated (ie, the mobility management network element sends a modify bearer request message to the third SGW selected in the service gateway migration process, indicating that the ISR is deactivated and the tracking area update accept message is sent to the user equipment or The routing area update accepts the message, indicating that the ISR is deactivated).
  • the first mobility management network element may perform the service recovery on the user equipment by paging the user equipment: the first mobility management network element deletes the context of the user equipment, and the foregoing user The device sends a first paging message, where the first paging message is used to indicate that the user equipment re-initiates the attach procedure.
  • the first mobility management network element receives the request message sent by the user equipment, and the service recovery of the user equipment may be: First, the first mobility management network element receives the tracking area sent by the user equipment. Updating the request message or the routing area update request message; then, the first mobility management network element selects the third serving gateway, where the third serving gateway includes the first serving gateway or another serving gateway other than the first serving gateway; Second, the first mobility management network element sends a create session request message to the third serving gateway, and receives a create session response message sent by the third service gateway. Again, the first mobility management network element sends a modify bearer request message to the third serving gateway. Receiving the modified bearer response message sent by the third serving gateway; finally, the first mobility management network element sends a tracking area update accept message or a routing area update accept message to the user equipment, indicating that the user equipment ISR is deactivated.
  • the MME and the SGSN adopt the same context processing policy, ie to retain or delete the context of the fault related user equipment.
  • the specific context of the policy can be determined in a pre-configured manner, or in a manner that is negotiated between the SGSN and the MME.
  • the first mobility management network element associated with the ISR receives the first message, where the first message is used to notify the first service gateway where the first mobility management network element user equipment is located to have a partial failure, the first mobility management.
  • the network element performs service recovery on the user equipment by paging the user equipment or receiving a request message sent by the user equipment. Therefore, when the service gateway is partially faulty, the service of the user equipment is guaranteed to be normal, thereby improving the user experience.
  • the service recovery method may include:
  • Step 201 A partial fault occurs in the SGW.
  • Step 202 The MME and the PGW learn that a partial fault occurs in the SGW.
  • the MME and the PGW know that the partial failure of the SGW may be:
  • the MME and the PGW respectively receive the Delete PDN Connection Set Request message sent by the SGW, and the MME and the PGW learn that the SGW has a partial failure by using the Delete PDN Connection Set Request message.
  • the foregoing delete PDN connection set request message includes an SGW-FQ-CSID, and the SGW-FQ-CSID may indicate a PDN connection lost on the SGW side due to a fault cause and the corresponding UE.
  • Step 203 The MME and the PGW delete the recorded SGW-FQ-CSID and the same context as the SGW-FQ-CSID included in the deleted PDN connection set request message.
  • the MME queries the context of the locally reserved user equipment according to the SGW-FQ-CSID carried in the Delete PDN Connection Set Request message, if the MME retains the user.
  • the context of the user equipment that records the SGW-FQ-CSID and the SGW-FQ-CSID carried in the foregoing deleted PDN connection set request message is obtained, and the user equipment affected by the partial failure of the first SGW is learned.
  • the MME deletes the context of the user equipment.
  • the manner in which the PGW deletes the context should be the same as the way the MME deletes.
  • Step 204 The SGSN learns that the SGW is partially faulty.
  • the SGSN may be aware of the occurrence of the Partial Failure by the SGW by, but not limited to, the following: After the MME learns that the SGW has a Partial Failure, the MME notifies the SGSN associated with the ISR that the SGW has a Partial Failure. Specifically, the MME queries the context of the user equipment, learns the information of the SGSN associated with the ISR, and sends a notification message to the SGSN according to the information of the SGSN to indicate that the SGW is partially faulty.
  • the notification message may be a SGW Partial Failure Notification (SGW Partial Failure Notification) message, and the specific name of the notification message is not limited in this embodiment.
  • SGW Partial Failure Notification SGW Partial Failure Notification
  • the notification message may be a notification message of the UE granularity.
  • the notification message may include the identifier information of the UE, for example: the IMSI information of a UE and/or the tunnel endpoint identifier (hereinafter referred to as TEID).
  • the information is: the UE is uniquely identified by the IMSI information and/or the TEID information carried in the notification message; or the notification message may be a notification message of a network device (eg, SGSN) granularity, and the notification message is Contains identification information of a series of UEs, for example: IMSIs of multiple UEs affected by partial failure of the SGW.
  • the notification message may also carry a partial failure of the SGW (SGW Partial) Failure) indication to indicate that the SGW has a partial failure.
  • SGW Partial Failure a partial failure of the SGW (SGW Partial) Failure) indication to indicate that the SGW has a partial failure.
  • the indication that the SGW Partial Failure occurs may be an indication that the SGW has a partial failure or a value that causes a partial failure of the SGW (cause).
  • Step 205 The SGSN deletes the context of the affected UE.
  • the information of the affected UE is obtained by using the notification message in step 204, for example, by using the IMSI in the notification message or by using the TEID in the message header of the notification message.
  • Step 206 The MME and the SGSN page the UE.
  • the MME and the SGSN each send a paging message to the UE, instructing the UE to re-initiate the attach procedure.
  • the paging message carries an IMSI of the UE.
  • Step 207 The UE initiates an attach procedure.
  • the UE that receives the paging message in step 206 re-executes the attach procedure, and re-establishes the connection with the network side through the attach procedure.
  • FIG. 3 is a flowchart of still another embodiment of a service recovery method according to the present invention.
  • the service recovery method may include:
  • Step 301 A partial fault occurs in the SGW.
  • Step 302 The MME and the PGW learn that a partial fault occurs in the SGW.
  • Step 303 The MME and the PGW keep the same SGW-FQ-CSID as the SGW-FQ-CSID included in the Delete PDN Connection Set Request message.
  • the MME queries the context of the locally reserved user equipment according to the SGW-FQ-CSID carried in the Delete PDN Connection Set Request message, if the MME retains the user.
  • the SGW-FQ-CSID is the same as the SGW-FQ-CSID carried in the above-mentioned Delete PDN Connection Set Request message, and the first SGW generating unit is known.
  • the MME reserves the context of the user equipment by dividing the user equipment whose fault is affected. Similarly, the manner in which the PGW retains the corresponding context is the same as that of the MME.
  • MM Bearer Context a PDN Connection Context or a PDN Context Table Data and/or a Mobile Management Bearer Context (hereinafter referred to as MM Bearer Context).
  • a corresponding timer may also be started.
  • the timer is used to record the retention time of the foregoing context. Once the timer expires, the locally saved context is deleted.
  • Step 304 The SGSN learns that the SGW is partially faulty.
  • Step 305 The SGSN reserves the context of the affected UE.
  • the SGSN after the partial failure of the SGW is known, the SGSN does not need to delete the context of the affected UE, but retains the context of the affected UE.
  • the information of the affected UE is obtained by using the foregoing notification message, for example, by using the IMSI in the notification message or by using the TEID in the message header of the notification message.
  • the SGSN may also start a timer for recording the time limit for retaining the context of the UE. Once the timer expires, the SGSN deletes the context of the UE.
  • Step 306a the MME and the SGSN page the UE.
  • the MME and the SGSN each send a paging message to the UE, and trigger the UE to re-initiate the service request procedure.
  • the paging message sent by the MME to the UE does not carry the IMSI, but carries the System Architecture Evolution TMSI (hereinafter referred to as S-TMSI); and the SGSN sends the PDCCH to the UE.
  • S-TMSI System Architecture Evolution TMSI
  • P-TMSI Packet Temporary Mobile Subscriber Identity
  • the MME sends a paging message to the UE by using an E-UTRAN NodeB (hereinafter referred to as eNodeB), where the paging message carries the S-TMSI; the SGSN passes the base station (Base Transceiver Station; BTS for short) Or 3G base station (NodeB) Sending a paging message to the UE, the paging message carrying P-TMSL
  • eNodeB E-UTRAN NodeB
  • the paging message carries the S-TMSI
  • the SGSN passes the base station (Base Transceiver Station; BTS for short) Or 3G base station (NodeB)
  • BTS Base Transceiver Station
  • NodeB 3G base station
  • the MME queries the context of the user equipment saved by the MME according to the SGW-FQ-CSID carried in the Delete PDN Connection Set Request message sent by the SGW, and learns the S-TMSI of the UE.
  • the SGSN is carried in the notification message sent by the MME.
  • the IMSI or TEID queries the context of the user equipment saved by the SGSN itself, and learns the P-TMSI of the UE.
  • Step 306b the UE performs a service request process.
  • the UE if the UE camps on the E-UTRAN, after receiving the paging message in step 306a, the UE initiates a service request procedure in the E-UTRAN, for example, including the step of the UE sending a Service Request message to the MME; If the UE camps on the UTRAN, after receiving the paging message in step 306a, the UE initiates a service request procedure in the UTRAN, for example, including the step of the UE sending a Service Request message to the SGSN; if the UE resides in the GERAN, After receiving the paging message in step 306a, the UE sends a paging response message to the SGSN in response to the paging on the network side.
  • the step 306a and the step 306b may also be collectively referred to as a network-triggered service request (Network Triggered Service Request) procedure.
  • Step 307 The mobility management network element performs a service gateway migration (SGW relocation) process.
  • the mobility management network element in step 307 is the MME or SGSN that receives the service request (Service Request) message in step 306b, or the SGSN that receives the paging response message.
  • step 307 may occur after the mobility management network element receives the service request message or the paging response message in step 306b.
  • the network connection of the UE is re-established by performing a service gateway migration process.
  • the MME or the SGSN starts the timer in the step 303 or the step 305, the timer started by the MME or the SGSN does not time out, and the context in the MME or the SGSN that performs the service gateway migration process is not deleted.
  • this step is executed, the above timer is stopped and the value of the above timer is set to zero.
  • the foregoing service gateway migration process may include the following steps (not shown in FIG. 3): 7-1, the mobility management network element selects the SGW.
  • the SGW selected by the mobility management network element may include: an original SGW with a partial failure or a new SGW (for example, an alternative SGW). 7-2.
  • the mobility management network element sends a create session request message to the selected SGW.
  • the selected SGW sends a modify bearer request message to the PGW.
  • the selected SGW receives the modify bearer response message sent by the PGW.
  • the mobility management network element receives the create session response message sent by the selected SGW. Step 308, the mobility management network element performs global unique temporary identity redistribution (Global Unique
  • Temporary Identity Reallocation hereinafter referred to as: GUTI Reallocation
  • P-TMSI Reallocation Packet Temporary Mobile User Identity Reassignment
  • step 308 may send a global unique temporary identity re-allocation command (GUTI Reallocation Command) message to the UE.
  • GUI Reallocation Command global unique temporary identity re-allocation command
  • the tracking area identifier list that is allocated by the MME does not include the tracking area identifier broadcasted by the network element of the radio access network, so that the UE initiates a Tracking Area Update (TAU) process.
  • TAU Tracking Area Update
  • step 308 may perform a packet temporary mobile subscriber identity reassignment command (P-TMSI Reallocation Command) message for the SGSN.
  • P-TMSI Reallocation Command packet temporary mobile subscriber identity reassignment command
  • the tracking area identifier allocated by the SGSN is different from the tracking area identifier broadcast by the network element of the radio access network, so that the UE initiates a tracking area update (hereinafter referred to as:
  • Step 309 The UE performs a tracking area update or a routing area update process.
  • the foregoing tracking area update or routing area update process may include the following steps (not shown in FIG. 3):
  • the UE sends a tracking area update request or a routing area update request to the mobility management network element.
  • the tracking area update process is performed, and the UE sends a Tracking Area Update Request (TAU Request) message to the MME.
  • TAU Request Tracking Area Update Request
  • the routing area update process is performed, and the UE sends a Routing Area Update Request (RAU Request) message to the SGSN.
  • RAU Request Routing Area Update Request
  • the mobility management network element sends a modify bearer request message to the SGW, indicating that the ISR is deactivated (ie, the ISR is not activated).
  • the SGW at this time is the SGW selected in step 307.
  • the mobility management network element receives the modify bearer response message sent by the SGW.
  • the MME After receiving the modify bearer response message sent by the SGW, the MME deletes the address information of the ISR-related SGSN and locally deactivates the ISR. Similarly, the SGSN also deletes the address information of the ISR-related MME, and locally deactivates the ISR.
  • the mobility management network element sends a tracking area update accept or a routing area update accept message to the UE, indicating that the ISR is deactivated (ie, the ISR is not activated).
  • the UE deactivates the ISR according to the ISR deactivation (that is, the ISR is not activated), so that the UE can perform the TAU or RAU process normally to ensure that the called service is reachable.
  • Step 310 The MME sends a request message to the SGSN associated with the ISR, indicating the SGSN.
  • the ISR is deactivated, and the SGSN sends a request message to the MME associated with the ISR, indicating that the MME ISR is deactivated.
  • the step is an optional step.
  • the request message may enable the ISR-related SGSN and the MME to delete the context of the user equipment that is saved in time.
  • the SGSN and the MME may also wait for the timer of step 305 or step 303 to expire before deleting the context of the user equipment saved.
  • the step 310 in FIG. 3 is shown to be performed after the step 309, the embodiment of the present invention is not limited thereto, and the step 310 may be performed before the step 309 or simultaneously with the step 309.
  • the context of the UE is reserved, and the MME and the SGSN are used to page the UE on both sides to trigger the UE to enable the MME/SGSN to select a new SGW to re-establish the network connection. , to ensure the normal operation of the UE's services.
  • the UE deactivates the ISR according to the ISR deactivation (that is, the ISR is not activated), so that the UE can perform the TAU/RAU process normally to ensure that the called service is reachable.
  • FIG. 4 is a flowchart of still another embodiment of a service recovery method according to the present invention. As shown in FIG. 4, the service recovery method may include:
  • Step 401-step 405 the same as step 301-step 305, and details are not described herein again.
  • the mobility management network element associated with the ISR in the embodiment shown in FIG. 3 after the partial failure of the SGW in the present invention immediately initiates paging to the UE, and the triggering service recovery process is different.
  • the mobility management associated with the ISR is used.
  • the network element is waiting for the mobile originating user equipment to initiate the calling party. (Mobile Originate; hereinafter referred to as: MO)
  • MO Mobile Originate
  • the business triggers the business recovery process.
  • the MO service initiated by the UE is a service request (Service Request) service, steps 406 to 410 are performed.
  • Step 406 The UE performs a service request process.
  • the UE if the UE camps on the E-UTRAN, the UE initiates a service request procedure in the E-UTRAN, for example, including the step of the UE sending a Service Request message to the MME; if the UE camps on the UTRAN, the UE is The UTRAN initiates a service request procedure, for example, including the steps of the UE sending a Service Request message to the SGSN.
  • step 406 is a service request process initiated by the UE.
  • Step 407 The mobility management network element performs a service gateway migration (SGW relocation) process.
  • SGW relocation service gateway migration
  • Step 408 The mobility management network element performs a global unique temporary identity relocation (GUTI Reallocation) or a packet temporary mobile subscriber identity reallocation (P-TMSI Reallocation) process.
  • GUI Reallocation global unique temporary identity relocation
  • P-TMSI Reallocation packet temporary mobile subscriber identity reallocation
  • Step 409 The UE performs a tracking area update or a routing area update process.
  • step 309 of the embodiment shown in FIG. 3 of the present invention may also be divided into steps 9-1 to 9-4, and details are not described herein again.
  • Step 410 The MME sends a request message to the SGSN associated with the ISR, indicating that the SGSN ISR is deactivated, and the SGSN sends a request message to the MME associated with the ISR, indicating that the MME ISR is deactivated.
  • the MO service initiated by the UE is a RAU or TAU service
  • the implementation sequence of the embodiment may be Step 9-1 of Step 409, Steps 7-1 to 7-5 of Step 407, Step 9 of Step 409. -2 to 9-5, and step 410.
  • the MME, the SGSN, and the PGW associated with the ISR determine that the SGW is partially faulty, and the service recovery process of the MME/SGSN to select a new SGW to re-establish the network connection is triggered when the UE initiates the MO service.
  • the UE The normal operation of the business.
  • FIG. 5 is a flowchart of still another embodiment of a service recovery method according to the present invention. As shown in FIG. 5, the service recovery method may include:
  • Step 501 - Step 505 is substantially similar to step 301 - step 305, and details are not described herein again.
  • FIG. 3 of the present invention after the partial failure of the SGW is known at this time,
  • the mobility management network element associated with the ISR immediately initiates paging to the UE, and the service recovery process is different.
  • the mobility management network element associated with the ISR is the called party waiting for the mobile originating user equipment (Mobile Terminated; MT)
  • the service triggers the business recovery process.
  • the step 504 is an optional step, that is, the SGSN can learn the partial failure of the SGW and obtain the information of the affected user equipment by using the notification message sent by the MME.
  • the SGSN can learn the above information through other steps. For example, the paging message sent by the SGW is obtained.
  • the description of step 506c refer to the description of step 506c. The specific implementation manner in which the SGSN learns that the SGW is partially faulty is not limited in this embodiment.
  • Step 506a The PGW receives a downlink data packet related to a context of the UE reserved by the PGW.
  • the PGW determines, according to the target Internet Protocol (Internet Protocol; IP address) address information in the downlink data packet, whether the PGW stores the context of the UE corresponding to the target IP address, if If yes, it is determined that the downlink data packet related to the context of the UE saved by the PGW is received, and then the subsequent steps are triggered; otherwise, the PGW may choose to discard the downlink data packet.
  • the downlink data packet may include a downlink signaling plane message or a downlink user plane packet. The content of the downlink data packet is not limited in this embodiment.
  • the PGW Since the PGW is aware that the SGW has a partial failure, the PGW can page the mobility management network element through the SGW that has partially failed or the SGW that is located in the SGW Pool where the failed SGW is located. Instead of discarding the downstream packet.
  • Step 506b The PGW sends a paging message to the SGW.
  • the SGW in step 506b may be any one of the SGW in which the partial failure occurs or the SGW pool (SGW Pool) in which the partially failed SGW is located, as described in step 506a.
  • the paging message includes an IMSI of the UE.
  • the paging message sent by the PGW to the SGW may include an ISR associated with the MME and
  • the information of the SGSN is used to instruct the SGW to send a paging message to the MME and the SGSN according to the information of the foregoing and the SGSN.
  • the information of the MME may be the address information and/or the identifier information of the MME.
  • the information of the SGSN may be the address information and/or the identifier information of the SGSN.
  • the paging message may also carry an indication that the SGW is partially faulty and/or identification information of the SGW.
  • Step 506c The SGW sends a paging message to the MME and the SGSN.
  • the SGW can learn the information of the MME and the SGSN associated with the ISR through the backup system or the local configuration, or can obtain the information of the MME and the SGSN associated with the ISR through step 506b, and then respectively provide the MME and the SGSN according to the information of the MME and the SGSN.
  • the paging message includes an IMSI of the UE.
  • the SGW may send to the at least one mobility management network element (for example, all MMEs in the MME pool and all SGSNs in the SGSN pool) in the mobility management NE pool connected to the SGW. Paging message.
  • the at least one mobility management network element for example, all MMEs in the MME pool and all SGSNs in the SGSN pool
  • the process of performing service recovery is triggered; If the mobility management network element to the paging message does not save the context of the UE, the paging message is rejected (eg, the mobility management network element sends a response message carrying the rejection reason value to the SGW) or ignores the paging message.
  • the paging message may also carry an indication that the SGW is partially faulty and/or identification information of the SGW.
  • the step 506a-step 506c is an implementation manner of the PGW paging MME and the SGSN.
  • the embodiment is not limited to this.
  • the embodiment does not limit the MME and the SGSN in the scenario where the SGW is partially faulty.
  • the MT data arrives at a specific implementation manner of paging the UE.
  • Step 506d the MME and the SGSN page the UE.
  • Step 506d is the same as step 306a, and details are not described herein again.
  • Step 506e the foregoing UE performs a service request procedure.
  • Step 506e is the same as step 306b, and details are not described herein.
  • Step 507-step 510 the same as step 307-step 310, and details are not described herein again.
  • the MME/SGSN is selected to re-establish the network connection service recovery process when the network side initiates the MT service.
  • the UE service is proceeding normally.
  • the aforementioned program can be stored in a computer readable storage medium.
  • the program when executed, performs the steps including the above-described method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
  • FIG. 6 is a schematic structural diagram of an embodiment of a mobility management network element according to the present invention.
  • the mobility management network element in this embodiment is a mobility management network element associated with an ISR, and the process of the embodiment shown in FIG. 1 of the present invention can be implemented.
  • the mobility management network element may include: a receiving module 61 and a recovery module 62;
  • the receiving module 61 is configured to receive a first message, where the first message is used to notify that the first SGW where the first mobile management NE user equipment is located has a partial fault;
  • the receiving module 61 may receive a notification message sent by the MME associated with the ISR.
  • the notification message received by the receiving module 61 carries the first identifier of the user equipment and/or the indication information that the first SGW is partially faulty.
  • the first identifier of the user equipment may be an identifier that the IMSI or the like can uniquely identify the user equipment.
  • the receiving module 61 may receive the third paging message sent by the second SGW, where the second SGW includes any one of the SGW Pool in which the first SGW or the first SGW is located, where The third paging message is sent by the second SGW to the mobility management network element after receiving the paging message sent by the PGW, and the third paging message carries the indication information that the first SGW has a partial failure.
  • the recovery module 62 is configured to perform service recovery on the user equipment by paging the user equipment, or receive a request message sent by the user equipment, and perform service recovery on the user equipment.
  • the recovery module 62 is specifically configured to send a second paging message to the user equipment, where the second paging message is used to instruct the user equipment to initiate a service request procedure, and receive the user equipment to send a service request message, performing a first service recovery process, performing service recovery on the user equipment; wherein, the context of the user equipment is first moved
  • the management NE is reserved.
  • the recovery module 62 is specifically configured to receive a service request message sent by the user equipment, perform a first service recovery process, and perform service recovery on the user equipment, where the context of the user equipment is The first mobility management network element is reserved.
  • the recovery module 62 may perform a service gateway migration process, and send a temporary identifier re-allocation command message to the user equipment, triggering the user equipment to perform a 3 trace area update process or a routing area update process;
  • the tracking area update process or the routing area update process indicates that the user equipment ISR is deactivated.
  • the recovery module 62 is specifically configured to delete the context of the user equipment, and send a first paging message to the user equipment, where the first paging message is used to indicate that the user equipment re-initiates the attach procedure. .
  • the recovery module 62 is specifically configured to receive a tracking area update request message or a routing area update request message sent by the user equipment, and select a third serving gateway, where the third serving gateway includes a service gateway or another service gateway other than the first service gateway; sending a create session request message to the third service gateway, receiving a create session response message sent by the third service gateway; and sending the modify bearer to the third service gateway
  • the request message receives the modify bearer response message sent by the third serving gateway; and sends a tracking area update accept message or a routing area update accept message to the user equipment, indicating that the user equipment ISR is deactivated.
  • the receiving module 61 is further configured to receive a third paging message sent by the second SGW, where the second SGW includes any one of the SGWs in the SGW Pool where the first SGW or the first SGW is located, where The third paging message is sent by the second serving gateway to the first mobility management network element after receiving the paging message sent by the PGW.
  • the third paging message received by the receiving module 61 carries the first identifier of the user equipment and/or the indication information that the first SGW is partially faulty.
  • the first identifier of the user equipment may be an IMSI or the like that can uniquely identify the user equipment.
  • the mobile management network element can ensure that the service of the user equipment is normal when the service gateway is partially faulty, thereby improving the user experience.
  • modules in the apparatus in the embodiment can be according to the embodiment.
  • the description is made in a device distributed in the embodiment, and the corresponding change can also be made in one or more devices different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into multiple sub-modules.

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Abstract

本发明提供一种业务恢复方法和移动管理网元,所述业务恢复方法包括:空闲模式限制信令ISR关联的第一移动管理网元接收第一消息,所述第一消息用于通知所述第一移动管理网元用户设备所在的第一服务网关发生部分故障;所述第一移动管理网元通过寻呼所述用户设备,对所述用户设备进行业务恢复,或,所述第一移动管理网元接收所述用户设备发送的请求消息,对所述用户设备进行业务恢复。本发明可以在服务网关发生部分故障时,保证用户设备的业务正常进行,进而可以提高用户体验度。

Description

业务恢复方法和移动管理网元 技术领域
本发明涉及通信技术, 尤其涉及一种业务恢复方法和移动管理网元。 背景技术
为了应对无线宽带技术的挑战, 保持第三代合作伙伴计划 ( 3rd Generation Partnership Project; 以下简称: 3GPP ) 网络的领先优势, 3GPP 制定了移动通信网络的长期演进( Long Term Evolution; 以下简称: LTE ) 计划。 在该演进计划的指导下定义了新的移动通信网络的架构, 该架构比 现在的第二代移动通信 (2nd Generation; 以下简称: 2G ) 、 第三代移动 通信( 3rd Generation; 以下简称: 3G ) 网络更加扁平, 并且只保留了分组 交换 (Packet Switch; 以下简称: PS ) 域, 因此可以称为演进分组系统 ( Evolved Packet System; 以下简称: EPS ) 。
分组数据网络( Packet Data Network; 以下简称: PDN ) 连接可视为 具有相同接入点名称 (Access Point Name; 以下简称: APN ) 的一个承载 或者多个承载的集合。
PDN连接集标识 ( PDN Connection Set Identifier; 以下简称: CSID ) 是一个节点, 例如: 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 ) 、 服务网关 (Serving Gateway; 以下简称: SGW ) 或者分组 数据网关 ( Packet Data Network Gateway; 以下简称: PGW ) 内一组 PDN 连接的标识; 上述一组 PDN 连接可以属于不同的用户设备 ( User Equipment; 以下简称: UE )。 其中, GPRS为通用分组无线服务( General Packet Radio Service ) 的简称。
CSID的全局标识(Fully Qualified CSID; 以下简称: FQ-CSID ) , 是 分配 CSID的节点的标识和 CSID的组合。 不同节点内部可以分配相同的 CSID, 为了区别不同节点分配的 CSID, 引入了 CSID的全局标识。
一个 PDN连接建立过程之后, MME、 SGW和 PGW在各自的 UE的 PDN连接上下文中保存该 PDN连接对应的 MME FQ-CSID信息、 SGW FQ-CSID信息和 PGW FQ-CSID信息。
空闲模式限制信令( Idle mode Signaling Reduction; 以下简称: ISR ) 是处于空闲模式的 UE选择无线接入网络时,提供的减少信令交互的机制。 ISR可以包括两个状态即激活状态和去激活状态。 以 UE在 UMTS陆地无 线接入网 ( UMTS Territorial Radio Access Network; 以下简称: UTRAN ) I GSM EDGE无线接入网 ( GSM EDGE Radio Access Network; 以下简称: GERAN ) 与演进的 UTRAN ( Evolved UTRAN; 以下简称: E-UTRAN ) 之间进行移动为例, 其中 GSM为全球移动通信系统 (Global System for Mobile communications ) 的简称, EDGE 为增强型数据速率 GSM 演进 ( Enhanced Data Rate for GSM Evolution )的简称, UMTS为通用移动通信 系统 ( Universal Mobile Telecommunications System ) 的简称。 在 ISR激活 场景下, UE需要同时注册到 E-UTRAN中的 MME和 UTRAN/GERAN(简 称 2/3G ) 中的 SGSN。 ISR激活场景下, SGW同时保存 MME的连接信息 和 SGSN的连接信息; MME和 SGSN相互保存对方的连接信息, 即 MME 保存 SGSN的连接信息, SGSN保存 MME的连接信息。 SGW同时保存 MME的连接信息和 SGSN的连接信息对 SGW意味着 ISR激活; MME和 SGSN相互保存对方的连接信息对 MME和 SGSN彼此意味着 ISR激活。
ISR激活场景下, 当 SGW接收到 UE的下行用户面或控制面数据时, 根据保存的 MME的连接信息和 SGSN的连接信息, SGW触发相应的 MME 和 SGSN 寻呼 UE。 因此, 不论当前 UE 驻留在 E-UTRAN 或者 UTRAN/GERAN中 , UE都可以在其驻留的网络响应对应网络的寻呼消息 (即 UE的被叫业务可达) 。
当 SGW发生部分故障 ( Partial Failure ) 时, SGW通过删除连接集请 求 ( Delete Connection Set Request消息 ) 将发生故障的 SGW FQ-CSID通 知给 MME和 PGW; MME和 PGW基于接收到的 SGW FQ-CSID检索 PDN 连接上下文确认受影响的 PDN连接并将其本地删除,之后向 SGW返回删 除连接集响应 ( Delete Connection Set Response )消息。其中, Partial Failure 是指由于软件或者硬件问题导致节点(MME、 SGW或者 PGW ) 内部保存 的相当一部分 PDN连接丟失。 从现有技术处理可以看出, 当 SGW发生 Partial Failure时, MME和 PGW将同步本地删除 SGW FQ-CSID所对应的 PDN连接上下文, 用户并 不知晓网络侧 MME和 PGW的 PDN连接上下文已被删除。 这将导致用户 设备的被叫业务不可达。
这是由于网络侧的网元设备(尤其是 PGW )中存储的所述用户的 PDN 连接上下文被删除, 若所释放 PDN连接关联到的业务具有高可靠性需求, 例如, 网络电话 ( Voice over Internet Protocol; 以下简称: VoIP ) 业务, 则从 PDN连接被释放到 UE主动和网络联系这段时间内,上述高可靠性业 务被叫不可达将使得该用户被叫不可达, 严重影响到用户的业务体验。
另外, 现有技术也没有考虑到 ISR激活场景下, 由于 S4 SGSN不支 持 Partial Failure 特性, 现有技术中 SGSN 不能感知到 ISR 相关联的 MME/SGW发生 Partial Failure, 不会进行对应的处理(例如本地删除相关 用户的上下文) 。 发明内容 本发明提供一种业务恢复方法和移动管理网元,以实现在服务网关发 生部分故障之后, 对用户设备的业务进行恢复, 保证用户设备的业务正常 进行。
本发明一方面提供一种业务恢复方法, 包括:
空闲模式限制信令 ISR关联的第一移动管理网元接收第一消息, 所述 第一消息用于通知所述第一移动管理网元用户设备所在的第一服务网关 发生部分故障;
所述第一移动管理网元通过寻呼所述用户设备, 对所述用户设备进行 业务恢复,或,所述第一移动管理网元接收所述用户设备发送的请求消息, 对所述用户设备进行业务恢复。
本发明另一方面提供一种移动管理网元, 所述移动管理网元为空闲模 式限制信令 ISR关联的第一移动管理网元, 包括:
接收模块, 用于接收第一消息, 所述第一消息用于通知所述第一移动 管理网元用户设备所在的第一服务网关发生部分故障;
恢复模块, 用于通过寻呼所述用户设备, 对所述用户设备进行业务恢 复, 或, 接收所述用户设备发送的请求消息, 对所述用户设备进行业务恢 复。
本发明一方面的技术效果是: ISR关联的第一移动管理网元接收第一 消息, 该第一消息用于通知上述第一移动管理网元用户设备所在的第一服 务网关发生部分故障, 该第一移动管理网元通过寻呼上述用户设备或接收 上述用户设备发送的请求消息, 对上述用户设备进行业务恢复。 从而可以 在服务网关发生部分故障时, 保证用户设备的业务正常进行, 进而可以提 高用户体验度。
本发明另一方面的技术效果是: 接收模块接收第一消息, 该第一消息 用于通知第一移动管理网元用户设备所在的第一服务网关发生部分故障; 然后恢复模块通过寻呼上述用户设备或接收上述用户设备发送的请求消 息,对上述用户设备进行业务恢复。从而可以在服务网关发生部分故障时, 保证用户设备的业务正常进行, 进而可以提高用户体验度。 附图说明
实施例或现有技术描述中所需要使用的附图作一简单地介绍, 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性的前提下, 还可以根据这些附图获得其他的 附图。
图 1为本发明业务恢复方法一个实施例的流程图;
图 2为本发明业务恢复方法另一个实施例的流程图;
图 3为本发明业务恢复方法再一个实施例的流程图;
图 4为本发明业务恢复方法再一个实施例的流程图;
图 5为本发明业务恢复方法再一个实施例的流程图;
图 6为本发明移动管理网元一个实施例的结构示意图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本 发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描 述, 显然, 所描述的实施例是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作出创造性劳动前提 下所获得的所有其他实施例, 都属于本发明保护的范围。
图 1为本发明业务恢复方法一个实施例的流程图, 如图 1所示, 该业 务恢复方法可以包括:
步骤 101 , ISR关联的第一移动管理网元接收第一消息, 该第一消息 用于通知第一移动管理网元用户设备所在的第一 SGW发生部分故障。
本实施例中的第一移动管理网元可以为 SGSN和 /或 MME。
具体地, 当移动管理网元为 MME时, ISR关联的第一移动管理网元 接收第一消息可以为: MME接收第一 SGW发送的删除 PDN连接集合请 求消息, MME根据该删除 PDN连接集合请求消息携带的 SGW-FQ-CSID 查询本地保留的用户设备的上下文, 如果该 MME保留的用户设备的上下 文中存在记录的 SGW-FQ-CSID 与第一 SGW 发送给该 MME 的 SGW-FQ-CSID相同的用户设备的上下文, 则获知由于第一 SGW发生部 分故障受到影响的所述用户设备。
进一步地, MME还可以查询所述用户设备的上下文, 获知 ISR关联 的 SGSN的信息, 根据该 SGSN的信息向上述 SGSN发送通知消息, 以指 示第一 SGW发生部分故障。
具体地, 当移动管理网元为 SGSN时, ISR关联的第一移动管理网元 接收第一消息可以为: SGSN接收与其 ISR关联的 MME发送的通知消息。
本实施例中, 上述通知消息携带用户设备的第一标识和 /或第一 SGW 发生部分故障的指示信息。 其中, 该用户设备的第一标识可以为国际移动 用户 i只另 ll码 ( International Mobile Subscriber Identification Number; 下简 称: IMSI ) 等可以唯一标识该用户设备的标识。
当移动管理网元为 SGSN时, 上述第一移动管理网元接收第一消息也 可以为: SGSN接收第二 SGW发送的第三寻呼消息, 其中, 第二服务网 关包括上述第一 SGW或第一 SGW所在服务网关池( SGW Pool ) 中的任 意一个 SGW, 第三寻呼消息是第二 SGW接收到 PGW发送的寻呼消息后 发送给上述 SGSN的, 该第三寻呼消息携带第一 SGW发生部分故障的指 示信息。 步骤 102, 第一移动管理网元通过寻呼上述用户设备, 对用户设备进 行业务恢复, 或第一移动管理网元接收上述用户设备发送的请求消息, 对 用户设备进行业务恢复。
本实施例的一种实现方式中, 第一移动管理网元通过寻呼上述用户设 备, 对用户设备进行业务恢复可以为: 第一移动管理网元向用户设备发送 第二寻呼消息, 该第二寻呼消息用于指示用户设备发起服务请求流程; 然 后, 第一移动管理网元接收用户设备发送的服务请求消息, 执行第一业务 恢复流程, 对上述用户设备进行业务恢复; 其中, 上述用户设备的上下文 被第一移动管理网元保留。
进一步地, 第一移动管理网元向用户设备发送第二寻呼消息之前, 第 一移动管理网元还可以接收第二 SGW发送的第三寻呼消息, 其中, 第二 SGW包括第一 SGW或第一 SGW所在 SGW Pool中的任意一个 SGW, 上 述第三寻呼消息是第二 SGW接收到 PGW发送的寻呼消息后发送给第一 移动管理网元的。
其中, 上述第三寻呼消息携带用户设备的第一标识和 /或第一 SGW发 生部分故障的指示信息。 其中, 该用户设备的第一标识可以为 IMSI等可 以唯一标识该用户设备的标识。
本实施例的另一种实现方式中, 第一移动管理网元接收上述用户设备 发送的请求消息, 对用户设备进行业务恢复可以为: 第一移动管理网元接 收用户设备发送的服务请求消息, 执行第一业务恢复流程, 对上述用户设 备进行业务恢复;其中,上述用户设备的上下文被第一移动管理网元保留。
上述两种实现方式中, 第一移动管理网元接收用户设备发送的服务请 求消息, 执行第一业务恢复流程, 对上述用户设备进行业务恢复可以为: 第一移动管理网元执行服务网关迁移流程; 然后, 第一移动管理网元向上 述用户设备发送临时标识重分配命令消息, 触发上述用户设备执行跟踪区 更新流程或路由区更新流程; 上述第一移动管理网元通过上述跟踪区更新 流程或上述路由区更新流程指示上述用户设备 ISR去激活(即移动管理网 元向服务网关迁移过程中选择的第三 SGW发送修改承载请求消息, 指示 ISR去激活以及向用户设备发送跟踪区更新接受消息或者路由区更新接受 消息, 指示 ISR去激活) 。 本实施例的再一种实现方式中, 第一移动管理网元通过寻呼上述用户 设备, 对上述用户设备进行业务恢复可以为: 第一移动管理网元删除上述 用户设备的上下文, 向上述用户设备发送第一寻呼消息, 第一寻呼消息用 于指示上述用户设备重新发起附着流程。
本实施例的再一种实现方式中, 第一移动管理网元接收用户设备发送 的请求消息, 对上述用户设备进行业务恢复可以为: 首先, 第一移动管理 网元接收用户设备发送的跟踪区更新请求消息或路由区更新请求消息; 然 后, 第一移动管理网元选择第三服务网关, 其中, 第三服务网关包括上述 第一服务网关或除第一服务网关之外的另一服务网关; 其次, 第一移动管 理网元向第三服务网关发送创建会话请求消息, 接收第三服务网关发送的 创建会话响应消息; 再次, 第一移动管理网元向第三服务网关发送修改承 载请求消息, 接收第三服务网关发送的修改承载响应消息; 最后, 第一移 动管理网元向用户设备发送跟踪区更新接受消息或者路由区更新接受消 息, 指示上述用户设备 ISR去激活。
在本发明的实施例中, MME和 SGSN采用相同的上下文处理策略, 即保留还是删除故障相关的用户设备的上下文。 具体采用哪种上下文处理 策略可以通过预先配置的方式, 或 SGSN和 MME进行协商的方式确定, 本实施例对此不作限定。
上述实施例中, ISR关联的第一移动管理网元接收第一消息, 该第一 消息用于通知上述第一移动管理网元用户设备所在的第一服务网关发生 部分故障, 该第一移动管理网元通过寻呼上述用户设备或接收上述用户设 备发送的请求消息, 对上述用户设备进行业务恢复。 从而可以在服务网关 发生部分故障时, 保证用户设备的业务正常进行, 进而可以提高用户体验 度。
图 2为本发明业务恢复方法另一个实施例的流程图, 如图 2所示, 该 业务恢复方法可以包括:
步骤 201 , SGW发生部分故障。
步骤 202, MME和 PGW获知 SGW发生部分故障。
具体地, MME和 PGW获知 SGW发生部分故障 ( Partial Failure ) 可 以为: MME和 PGW分别接收到 SGW发送的删除 PDN连接集合请求( Delete PDN Connection Set Request ) 消息 , MME和 PGW通过该删除 PDN连接 集合请求消息获知 SGW发生部分故障。其中上述删除 PDN连接集合请求 消息中包含 SGW-FQ-CSID,该 SGW-FQ-CSID可以指示在 SGW侧由于故 障原因被丟失的 PDN连接以及所对应的 UE。
步骤 203 , MME和 PGW删除记录的 SGW-FQ-CSID与上述删除 PDN 连接集合请求消息中包含的 SGW-FQ-CSID相同的上下文。
具体地, MME接收到第一 SGW发送的删除 PDN连接集合请求消息 之后, MME根据上述删除 PDN连接集合请求消息携带的 SGW-FQ-CSID 查询本地保留的用户设备的上下文, 如果该 MME保留的用户设备的上下 文中存在记录 SGW-FQ-CSID与上述删除 PDN连接集合请求消息携带的 SGW-FQ-CSID相同的用户设备的上下文, 则获知由于第一 SGW发生部 分故障受到影响的所述用户设备, 则 MME删除所述用户设备的上下文。 同理 , PGW删除^应上下文的方式和 MME的删除方式相同。
步骤 204, SGSN获知上述 SGW发生部分故障。
具体地, SGSN可以通过但不限于以下方式获知上述 SGW发生 Partial Failure: MME在获知 SGW发生 Partial Failure之后,通告 ISR关联的 SGSN 上述 SGW发生 Partial Failure。具体地, MME查询所述用户设备的上下文, 获知 ISR关联的 SGSN的信息,根据该 SGSN的信息向上述 SGSN发送通 知消息, 以指示上述 SGW发生部分故障。 其中, 该通知消息可以为 SGW 部分故障通知 ( SGW Partial Failure Notification ) 消息, 本实施例不限制 该通知消息的具体名称。
其中, 上述通知消息可以是一个 UE粒度的通知消息, 此时该通知消 息可以包含一个 UE的标识信息, 例如: 一个 UE的 IMSI信息和 /或隧道 端点标识( Tunnel Endpoint Identifier; 以下简称: TEID )信息, 通过所述 通知消息中携带的 IMSI信息和 /或 TEID信息来唯一标识该 UE; 或者, 上 述通知消息也可以是一个网络设备(例如: SGSN ) 粒度的通知消息, 这 时, 该通知消息包含一系列 UE的标识信息, 例如: 受到 SGW部分故障 影响的多个 UE的 IMSI。
进一步地, 该通知消息还可以携带 SGW发生部分故障 (SGW Partial Failure )的指示, 以指示 SGW发生部分故障。 具体地, 上述 SGW发生部 分故障 (SGW Partial Failure ) 的指示可以为 SGW发生部分故障的指示 ( Indicator ) 或者携带一个值为 SGW发生部分故障的原因 (cause ) 。
步骤 205 , SGSN删除受到影响的 UE的上下文。
其中, 上述受到影响的 UE的信息为通过步骤 204中的通知消息获得 的, 例如通过上述通知消息中的 IMSI获知或者通过上述通知消息的消息 头中的 TEID获知。
步骤 206, MME和 SGSN寻呼上述 UE。
其中, MME和 SGSN各自向上述 UE发送寻呼消息, 指示上述 UE 重新发起附着流程。 具体地, 所述寻呼消息携带所述 UE的 IMSI。
步骤 207, UE发起附着流程。
其中, 接收到步骤 206中的寻呼消息的 UE, 重新执行附着流程, 通 过附着流程重新建立与网络侧的连接。
上述实施例中, ISR关联的 SGSN和 MME, 以及 PGW确定 SGW发 生 Partial Failure之后 , 及时地删除对应的 UE在网络侧的所有上下文, 然 后 MME和 SGSN在两侧寻呼 UE以使 UE重新接入网络,保证该 UE的业 务快速恢复。
图 3为本发明业务恢复方法再一个实施例的流程图, 如图 3所示, 该 业务恢复方法可以包括:
步骤 301 , SGW发生部分故障。
步骤 302, MME和 PGW获知 SGW发生部分故障。
其中, MME和 PGW获知 SGW发生部分部分故障的方法请参见本发 明图 2所示实施例步骤 202中的描述, 在此不再赘述。
步骤 303 , MME和 PGW保留记录的 SGW-FQ-CSID与上述删除 PDN 连接集合请求消息中包含的 SGW-FQ-CSID相同的上下文。
具体地, MME接收到第一 SGW发送的删除 PDN连接集合请求消息 之后, MME根据上述删除 PDN连接集合请求消息携带的 SGW-FQ-CSID 查询本地保留的用户设备的上下文, 如果该 MME保留的用户设备的上下 文中存在记录 SGW-FQ-CSID与上述删除 PDN连接集合请求消息携带的 SGW-FQ-CSID相同的用户设备的上下文, 则获知由于第一 SGW发生部 分故障受到影响的所述用户设备, 则 MME保留所述用户设备的上下文。 同理, PGW保留对应上下文的方式和 MME的保留方式相同。
其中,保留上述上下文可以为:保留 PDN连接上下文( PDN Connection Context或者 PDN Context Table Data )和 /或移动管理承载上下文 ( Mobile Management Bearer Context; 以下简称: MM Bearer Context ) 。
进一步地, 在保留上下文的同时, 还可以启动一个对应的定时器, 该 定时器用于记录上述上下文的保留时效, 一旦该定时器超时, 则删除本地 保存的上述上下文。
步骤 304, SGSN获知上述 SGW发生部分故障。
其中, SGSN获知上述 SGW发生部分故障的方法请参见本发明图 2 所示实施例步骤 204中的描述, 在此不再赘述。
步骤 305 , SGSN保留受到影响的 UE的上下文。
本实施例中, 获知上述 SGW发生部分故障之后, SGSN不需要删除 受到影响的 UE的上下文, 而是保留受到影响的 UE的上下文。 其中, 上 述受到影响的 UE的信息为通过上述通知消息获得的, 例如通过上述通知 消息中的 IMSI获知或者通过上述通知消息的消息头中的 TEID获知。
进一步地, 在 SGSN保留上述 UE的上下文的同时, SGSN还可以启 动一个定时器, 该定时器用于记录保留上述 UE的上下文的时效, 一旦该 定时器超时, 则 SGSN删除上述 UE的上下文。
步骤 306a, MME和 SGSN寻呼上述 UE。
具体地, MME和 SGSN各自向上述 UE发送寻呼消息, 触发上述 UE 重新发起服务请求流程。
本实施例中, MME向上述 UE发送的寻呼消息不携带 IMSI, 而是携 带系统架构演进临时移动用户标识 ( System Architecture Evolution TMSI; 以下简称: S-TMSI ) ;同样 SGSN向上述 UE发送的寻呼消息不携带 IMSI, 而是携带分组临时移动用户标识 ( Packet Temporary Mobile Subscriber Identity; 以下简称: P-TMSI ) 。
具体地, MME通过演进型网络基站 ( E-UTRAN NodeB; 以下简称: eNodeB ) 向上述 UE发送寻呼消息, 该寻呼消息携带 S-TMSI; SGSN通 过基站 ( Base Transceiver Station; 以下简称: BTS )或者 3G基站 ( NodeB ) 向上述 UE发送寻呼消息, 该寻呼消息携带 P-TMSL
其中, MME根据 SGW发送的删除 PDN连接集合请求消息中携带的 SGW-FQ-CSID查询该 MME自身保存的用户设备的上下文, 获知上述 UE 的 S-TMSI; SGSN根据 MME发送的通知消息中携带的 IMSI或 TEID查 询该 SGSN自身保存的用户设备的上下文, 获知上述 UE的 P-TMSI。
步骤 306b, UE执行服务请求流程。
具体地, 若 UE驻留在 E-UTRAN, 接收到步骤 306a中的寻呼消息之 后,该 UE在 E-UTRAN发起服务请求流程,例如包括 UE向 MME发送服 务请求( Service Request ) 消息等步骤; 若 UE驻留在 UTRAN, 接收到步 骤 306a中的寻呼消息之后, 该 UE在 UTRAN发起服务请求流程, 例如包 括 UE向 SGSN发送服务请求( Service Request )消息等步骤; 若 UE驻留 在 GERAN,接收到步骤 306a中的寻呼消息之后,该 UE在 GERAN向 SGSN 发送寻呼响应消息等步骤, 响应网络侧的寻呼。
本实施例中, 步骤 306a和步骤 306b还可以合称为网络侧触发的服务 请求 ( Network triggered Service Request ) 流程。
步骤 307, 移动管理网元执行服务网关迁移 ( SGW relocation ) 流程。 其中, 步骤 307中的所述移动管理网元为步骤 306b中接收到服务请 求( Service Request )消息的 MME或 SGSN, 或者接收到寻呼响应消息的 SGSN。
本实施例中, 步骤 307可以发生在移动管理网元接收到步骤 306b中 的服务请求消息或寻呼响应消息之后。其中,通过执行服务网关迁移流程, 使得上述 UE的网络连接得到重建。
此时, 若步骤 303或者步骤 305中 MME或 SGSN启动了定时器, 则 此时该 MME 或 SGSN 启动的定时器未超时, 执行服务网关迁移流程的 MME或 SGSN中的上下文未被删除。 在执行该步骤时, 停止上述定时器 并将上述定时器的值置为 0。
具体地, 上述服务网关迁移流程可以包括以下步骤(图 3中未示出): 7-1 , 移动管理网元选择 SGW。
其中, 移动管理网元选择的 SGW可以包括: 原有的发生部分故障的 SGW或一个新的 SGW (例如备选 SGW ) 。 7-2, 移动管理网元向上述选择的 SGW发送创建会话请求消息。
7-3 , 选择的 SGW向 PGW发送修改承载请求消息。
7-4, 选择的 SGW接收 PGW发送的修改承载响应消息。
7-5 , 移动管理网元接收上述选择的 SGW发送的创建会话响应消息。 步骤 308,移动管理网元执行全局唯一临时标识重分配( Global Unique
Temporary Identity Reallocation; 以下简称: GUTI Reallocation )或分组临 时移动用户标识重分配 ( P-TMSI Reallocation ) 流程。
其中,若步骤 307中的移动管理网元为 MME,则步骤 308可以为 MME 向 UE发送全局唯一临时标识重分配命令 ( GUTI Reallocation Command ) 消息。 其中, MME 分配的跟踪区标识列表不包含无线接入网网元广播的 跟踪区标识, 以使上述 UE发起跟踪区更新流程 ( Tracking Area Update; 以下简称: TAU ) 流程。
其中,若步骤 307中的移动管理网元为 SGSN,则步骤 308可以为 SGSN 执行分组临时移动用户标识重分配命令 ( P-TMSI Reallocation Command ) 消息。 其中, SGSN分配的跟踪区标识不同于无线接入网网元广播的跟踪 区标识, 以使上述 UE发起跟踪区更新 ( Routing Area Update; 以下简称:
RAU ) 流程。
步骤 309, UE执行跟踪区更新或路由区更新流程。
具体地, 上述跟踪区更新或路由区更新流程可以包括以下步骤 (图 3 中未示出) :
9-1 , UE向移动管理网元发送跟踪区更新请求或者路由区更新请求消 自
其中, 若上述移动管理网元为 MME , 则执行跟踪区更新流程, UE向 MME发送 3艮踪区更新请求( Tracking Area Update Request;以下简称: TAU Request ) 消息;
若上述移动管理网元为 SGSN, 则执行路由区更新流程, UE向 SGSN 发送路由区更新请求 (Routing Area Update Request; 以下简称: RAU Request ) 消息。
9-2, 移动管理网元向 SGW发送修改承载请求消息, 指示 ISR去激活 (即 ISR未激活) 。 其中, 此时的 SGW为步骤 307中选择的 SGW。
9-3 , 移动管理网元接收 SGW发送的修改承载响应消息。
接收到 SGW发送的修改承载响应消息之后, MME删除 ISR相关的 SGSN的地址信息,本地去激活 ISR;同样, SGSN也删除 ISR相关的 MME 的地址信息, 本地去激活 ISR。
9-4, 移动管理网元向 UE 发送跟踪区更新接受或路由区更新接受消 息, 指示 ISR去激活 (即 ISR未激活 ) 。
其中, UE根据 ISR去激活 (即 ISR未激活 )指示, 去激活 ISR, 使 得 UE能正常执行 TAU或 RAU流程, 保证被叫业务可达。
步骤 310, MME向 ISR关联的 SGSN发送请求消息, 指示所述 SGSN
ISR去激活, 并且 SGSN向 ISR关联的 MME发送请求消息, 指示所述 MME ISR去激活。
其中,本步骤为可选的步骤,上述请求消息可以使得 ISR相关的 SGSN 和 MME及时删除各自保存的用户设备的上下文。
若未接收到上述请求消息, SGSN和 MME也可以等待在步骤 305或 者步骤 303中的定时器超时后, 将各自保存的用户设备的上下文删除。 另 夕卜, 虽然图 3中步骤 310显示在步骤 309之后执行, 但是本发明实施例不 限于此, 步骤 310也可以在步骤 309之前执行, 或与步骤 309同时执行。
上述实施例中, ISR关联的 MME、 SGSN和 PGW确定 SGW发生部 分故障之后, 保留 UE的上下文, 通过 MME和 SGSN在两侧寻呼 UE触 发该 UE以使 MME/SGSN选择新 SGW重新建立网络连接, 保证该 UE的 业务的正常进行。
其中, UE根据 ISR去激活 (即 ISR未激活 )指示, 去激活 ISR, 使 得 UE能正常执行 TAU/RAU流程, 保证被叫业务可达。
图 4为本发明业务恢复方法再一个实施例的流程图, 如图 4所示, 该 业务恢复方法可以包括:
步骤 401-步骤 405 , 同步骤 301-步骤 305, 在此不再赘述。
其中, 与本发明图 3所示实施例中在获知 SGW发生部分故障后 ISR 关联的移动管理网元立刻发起对 UE的寻呼, 触发业务恢复流程不同, 本 实施例中, ISR 关联的移动管理网元是等待移动起始用户设备发起主叫 ( Mobile Originate; 以下简称: MO ) 业务触发业务恢复流程。 本实施例中, 若 UE发起的 MO业务为服务请求 ( Service Request ) 业务, 则执行步骤 406到 410。
步骤 406, UE执行服务请求流程。
具体地, 若 UE驻留在 E-UTRAN, 则 UE在 E-UTRAN发起服务请求 流程,例如包括 UE向 MME发送服务请求( Service Request )消息等步骤; 若 UE驻留在 UTRAN , 则该 UE在 UTRAN发起服务请求流程, 例如包括 UE向 SGSN发送服务请求 ( Service Request ) 消息等步骤。
与本发明图 3所示实施例的步骤 306中不同, 步骤 406此时为 UE主 动发起的服务请求流程。
步骤 407, 移动管理网元执行服务网关迁移 ( SGW relocation ) 流程。 具体地, 上述服务网关迁移流程的具体实现请参见本发明图 3所示实 施例中步骤 307的描述, 也可以分为步骤 7-1到 7-5 , 在此不再赘述。
步骤 408 , 移动管理网元执行全局唯一临时标识重分配 ( GUTI Reallocation ) 或分组临时移动用户标识重分配 ( P-TMSI Reallocation ) 流 程。
具体实现参见本发明图 3所示实施例步骤 308的描述,在此不再赘述。 步骤 409 , UE执行跟踪区更新或路由区更新流程。
具体实现参见本发明图 3所示实施例步骤 309的描述, 也可以分为步 骤 9-1到 9-4, 在此不再赘述。
步骤 410, MME向 ISR关联的 SGSN发送请求消息, 指示所述 SGSN ISR去激活, 并且 SGSN向 ISR关联的 MME发送请求消息, 指示所述 MME ISR去激活。
具体实现参见本发明图 3所示实施例步骤 310的描述,在此不再赘述。 本实施例中, 若 UE发起的 MO业务为 RAU或 TAU业务时, 该实施 例实现顺序可以为步骤 409 的步骤 9-1 , 407步骤的步骤 7-1到 7-5 , 步骤 409步骤的 9-2 到 9-5 , 以及步骤 410。
上述实施例中, ISR关联的 MME、 SGSN和 PGW确定 SGW发生部 分故障之后, 通过保留 UE 的上下文, 在 UE发起 MO业务时触发上述 MME/SGSN选择新 SGW重新建立网络连接的业务恢复流程, 保证该 UE 的业务的正常进行。
图 5为本发明业务恢复方法再一个实施例的流程图, 如图 5所示, 该 业务恢复方法可以包括:
步骤 501-步骤 505 , 同步骤 301-步骤 305基本相似, 在此不再赘述。 其中, 与本发明图 3所示实施例中此时在获知 SGW发生部分故障后
ISR关联的移动管理网元立刻发起对 UE的寻呼,触发业务恢复流程不同, 本实施例中, ISR 关联的移动管理网元是等待移动起始用户设备的被叫 ( Mobile Terminated; 以下简称: MT ) 业务触发业务恢复流程。
本实施例中, 步骤 504为可选的步骤, 即 SGSN可以通过 MME发送 的通知消息获知 SGW发生部分故障以及获取受到影响的用户设备的信 息; 此外, SGSN还可以通过其他步骤获知以上的信息, 例如通过 SGW 发送的寻呼消息获知, 具体实现参见步骤 506c的描述。 本实施例对 SGSN 获知 SGW发生部分故障的具体实现方式不作限定。
步骤 506a, PGW接收与该 PGW保留的 UE的上下文相关的下行数据 包。
具体地, PGW接收到下行数据包之后, 根据该下行数据包中的目标 因特网协议( Internet Protocol; 以下简称: IP ) 地址信息确定该 PGW是 否保存有与上述目标 IP地址对应的 UE的上下文, 若有, 则确定接收到与 该 PGW保存的 UE的上下文相关的下行数据包, 进而触发后续的步骤; 否则 PGW可以选择丟弃该下行数据包。 其中, 该下行数据包可以包含下 行信令面消息或者下行用户面报文, 本实施例对该下行数据包中包含的内 容不做限制。
由于此时 PGW获知到 SGW发生了部分故障, 此时 PGW可以通过上 述发生部分故障的 SGW或者通过该发生故障的 SGW所在 SG\\^ ( SGW Pool ) 中的任意一个 SGW寻呼移动管理网元, 而不是丟弃该下行数据包。
步骤 506b, PGW向 SGW发送寻呼消息。
其中, 如步骤 506a所述, 步骤 506b中的 SGW可以是上述发生部分 故障的 SGW或者该发生部分故障的 SGW所在 SGW池( SGW Pool ) 中 的任意一个 SGW。 其中, 所述寻呼消息包含所述 UE的 IMSI。
此外, PGW向 SGW发送的寻呼消息中可以包含 ISR关联的 MME和 SGSN的信息,以指示该 SGW根据上述 ΜΜΕ和 SGSN的信息分别向 MME 和 SGSN发送寻呼消息。
其中, 上述 MME的信息可以为 MME的地址信息和 /或标识信息; 同 样上述 SGSN的信息可以为 SGSN的地址信息和 /或标识信息。
此外,所述寻呼消息也可以携带 SGW发生部分故障的指示和 /或 SGW 的标识信息。
步骤 506c, SGW向 MME和 SGSN发送寻呼消息。
具体地, SGW可以通过备份系统或本地配置获知 ISR关联的 MME 和 SGSN的信息,或者可以通过步骤 506b获知 ISR关联的 MME和 SGSN 的信息, 然后根据上述 MME和 SGSN的信息分别向上述 MME和 SGSN 发送寻呼消息。 其中, 所述寻呼消息包含所述 UE的 IMSI。
若 SGW未获知到 SGSN和 MME信息, 则该 SGW可以向该 SGW连 接的移动管理网元池中的至少一个移动管理网元 (例如: MME 池中所有 的 MME和 SGSN池中所有的 SGSN )发送寻呼消息。 移动管理网元池中 的至少一个移动管理网元接收到上述寻呼消息之后, 若接收到寻呼消息的 移动管理网元中保存了上述 UE的上下文, 则触发执行业务恢复的流程; 若接收到寻呼消息的移动管理网元未保存上述 UE的上下文, 则拒绝所述 寻呼消息 (例如移动管理网元向 SGW发送携带拒绝原因值的应答消息) 或者忽略所述寻呼消息。
此外,所述寻呼消息也可以携带 SGW发生部分故障的指示和 /或 SGW 的标识信息。
本实施例中, 步骤 506a-步骤 506c为 PGW寻呼 MME和 SGSN的一 种实现方式, 当然本实施例并不仅限于此, 本实施例不限制在 SGW发生 部分故障的场景下, MME和 SGSN获知 MT数据到达对 UE进行寻呼的 具体实现方式。
步骤 506d, MME和 SGSN寻呼上述 UE。
其中, 步骤 506d同步骤 306a, 在此不再赘述。
步骤 506e, 上述 UE执行服务请求流程。
其中, 步骤 506e同步骤 306b, 在此不再赘述
步骤 507-步骤 510, 同步骤 307-步骤 310, 在此不再赘述。 上述实施例中, ISR关联的 MME、 SGSN和 PGW确定 SGW发生部 分故障之后, 通过保留 UE 的上下文, 在网络侧发起 MT 业务时触发 MME/SGSN选择新 SGW重新建立网络连接的业务恢复流程, 保证 UE业 务的正常进行。
本领域普通技术人员可以理解: 实现上述各方法实施例的全部或部分 步骤可以通过程序指令相关的硬件来完成。 前述的程序可以存储于一计算 机可读取存储介质中。 该程序在执行时, 执行包括上述各方法实施例的步 骤; 而前述的存储介质包括: ROM、 RAM, 磁碟或者光盘等各种可以存 储程序代码的介质。
图 6为本发明移动管理网元一个实施例的结构示意图, 本实施例中的 移动管理网元为 ISR关联的移动管理网元, 可以实现本发明图 1所示实施 例的流程。 如图 6所示, 该移动管理网元可以包括: 接收模块 61和恢复 模块 62;
其中, 接收模块 61 , 用于接收第一消息, 该第一消息用于通知第一移 动管理网元用户设备所在的第一 SGW发生部分故障;
本实施例的一种实现方式中, 接收模块 61 可以接收与其 ISR关联的 MME发送的通知消息。 具体地, 接收模块 61接收的通知消息携带上述用 户设备的第一标识和 /或第一 SGW发生部分故障的指示信息。 其中, 该用 户设备的第一标识可以为 IMSI等可以唯一标识该用户设备的标识。
本实施例的另一种实现方式中,接收模块 61可以接收第二 SGW发送 的第三寻呼消息,其中,第二 SGW包括第一 SGW或第一 SGW所在 SGW Pool中的任意一个 PGW, 第三寻呼消息是第二 SGW接收到 PGW发送的 寻呼消息后发送给上述移动管理网元的, 该第三寻呼消息携带第一 SGW 发生部分故障的指示信息。
恢复模块 62,用于通过寻呼上述用户设备,对用户设备进行业务恢复, 或, 接收用户设备发送的请求消息, 对上述用户设备进行业务恢复。
本实施例的一种实现方式中, 恢复模块 62, 具体用于向用户设备发送 第二寻呼消息, 该第二寻呼消息用于指示上述用户设备发起服务请求流 程;以及接收上述用户设备发送的服务请求消息,执行第一业务恢复流程, 对上述用户设备进行业务恢复; 其中, 上述用户设备的上下文被第一移动 管理网元保留。
本实施例的另一种实现方式中, 恢复模块 62, 具体用于接收用户设备 发送的服务请求消息, 执行第一业务恢复流程, 对上述用户设备进行业务 恢复; 其中, 上述用户设备的上下文被上述第一移动管理网元保留。
具体的, 上述两种实现方式中, 恢复模块 62可以执行服务网关迁移 流程, 向上述用户设备发送临时标识重分配命令消息, 触发上述用户设备 执行 3艮踪区更新流程或路由区更新流程; 通过 3艮踪区更新流程或路由区更 新流程指示上述用户设备 ISR去激活。
本实施例的再一种实现方式中, 恢复模块 62, 具体用于删除用户设备 的上下文, 向上述用户设备发送第一寻呼消息, 该第一寻呼消息用于指示 用户设备重新发起附着流程。
本实施例的再一种实现方式中, 恢复模块 62, 具体用于接收用户设备 发送的跟踪区更新请求消息或路由区更新请求消息, 选择第三服务网关, 其中, 该第三服务网关包括第一服务网关或除上述第一服务网关之外的另 —服务网关; 向第三服务网关发送创建会话请求消息, 接收第三服务网关 发送的创建会话响应消息; 以及向第三服务网关发送修改承载请求消息, 接收第三服务网关发送的修改承载响应消息; 向上述用户设备发送跟踪区 更新接受消息或者路由区更新接受消息, 指示上述用户设备 ISR去激活。
进一步地, 本实施例中, 接收模块 61 , 还用于接收第二 SGW发送的 第三寻呼消息,其中,第二 SGW包括第一 SGW或第一 SGW所在 SGW Pool 中的任意一个 SGW,第三寻呼消息是第二服务网关接收到 PGW发送的寻 呼消息后发送给第一移动管理网元的。 具体地, 接收模块 61接收的第三 寻呼消息携带用户设备的第一标识和 /或第一 SGW发生部分故障的指示信 息。 其中, 该用户设备的第一标识可以为 IMSI等可以唯一标识该用户设 备的标 i只。
上述移动管理网元可以在服务网关发生部分故障时, 保证用户设备的 业务正常进行, 进而可以提高用户体验度。
本领域技术人员可以理解附图只是一个优选实施例的示意图, 附图中 的模块或流程并不一定是实施本发明所必须的。
本领域技术人员可以理解实施例中的装置中的模块可以按照实施例 描述进行分布于实施例的装置中, 也可以进行相应变化位于不同于本实施 例的一个或多个装置中。 上述实施例的模块可以合并为一个模块, 也可以 进一步拆分成多个子模块。
最后应说明的是: 以上各实施例仅用以说明本发明的技术方案, 而非 对其限制; 尽管参照前述各实施例对本发明进行了详细的说明, 本领域的 普通技术人员应当理解: 其依然可以对前述各实施例所记载的技术方案进 行修改, 或者对其中部分或者全部技术特征进行等同替换; 而这些修改或 者替换, 并不使相应技术方案的本质脱离本发明各实施例技术方案的范 围。

Claims

权 利 要 求 书
1、 一种业务恢复方法, 其特征在于, 包括:
空闲模式限制信令 ISR关联的第一移动管理网元接收第一消息, 所述 第一消息用于通知所述第一移动管理网元用户设备所在的第一服务网关 发生部分故障;
所述第一移动管理网元通过寻呼所述用户设备, 对所述用户设备进行 业务恢复,或,所述第一移动管理网元接收所述用户设备发送的请求消息, 对所述用户设备进行业务恢复。
2、 根据权利要求 1 所述的方法, 其特征在于, 所述第一移动管理网 元包括服务通用分组无线服务支持节点 SGSN;
所述第一移动管理网元接收第一消息包括:
所述 SGSN接收与其 ISR关联的移动管理实体 MME发送的通知消息。
3、 根据权利要求 2所述的方法, 其特征在于, 所述通知消息携带所 述用户设备的第一标识和 /或所述第一服务网关发生部分故障的指示信息。
4、 根据权利要求 1 所述的方法, 其特征在于, 所述第一移动管理网 元包括 SGSN;
所述第一移动管理网元接收第一消息包括:
所述 SGSN接收第二服务网关发送的第三寻呼消息, 其中, 所述第二 服务网关包括所述第一服务网关或所述第一服务网关所在服务网关池中 的任意一个服务网关, 所述第三寻呼消息是所述第二服务网关接收到分组 数据网关发送的寻呼消息后发送给所述 SGSN的, 所述第三寻呼消息携带 所述第一服务网关发生部分故障的指示信息。
5、 根据权利要求 1-3任一所述的方法, 其特征在于, 所述第一移动管 理网元通过寻呼所述用户设备, 对所述用户设备进行业务恢复包括:
所述第一移动管理网元向所述用户设备发送第二寻呼消息, 所述第二 寻呼消息用于指示所述用户设备发起服务请求流程;
所述第一移动管理网元接收所述用户设备发送的服务请求消息, 执行 第一业务恢复流程, 对所述用户设备进行业务恢复;
其中, 所述用户设备的上下文被所述第一移动管理网元保留。
6、 根据权利要求 4所述的方法, 其特征在于, 所述第一移动管理网 元通过寻呼所述用户设备, 对所述用户设备进行业务恢复包括:
所述第一移动管理网元向所述用户设备发送第二寻呼消息, 所述第二 寻呼消息用于指示所述用户设备发起服务请求流程;
所述第一移动管理网元接收所述用户设备发送的服务请求消息, 执行 第一业务恢复流程, 对所述用户设备进行业务恢复;
其中, 所述用户设备的上下文被所述第一移动管理网元保留。
7、 根据权利要求 1-3任一所述的方法, 其特征在于, 所述第一移动管 理网元接收所述用户设备发送的请求消息, 对所述用户设备进行业务恢复 包括:
所述第一移动管理网元接收所述用户设备发送的服务请求消息, 执行 第一业务恢复流程, 对所述用户设备进行业务恢复;
其中, 所述用户设备的上下文被所述第一移动管理网元保留。
8、 根据权利要求 1-3任一所述的方法, 其特征在于, 所述第一移动管 理网元通过寻呼所述用户设备, 对所述用户设备进行业务恢复包括:
所述第一移动管理网元删除所述用户设备的上下文, 向所述用户设备 发送第一寻呼消息, 所述第一寻呼消息用于指示所述用户设备重新发起附 着流程。
9、 根据权利要求 5-7任一所述的方法, 其特征在于, 所述第一移动管 理网元接收所述用户设备发送的服务请求消息, 执行第一业务恢复流程, 对所述用户设备进行业务恢复包括:
所述第一移动管理网元执行服务网关迁移流程;
所述第一移动管理网元向所述用户设备发送临时标识重分配命令消 息, 触发所述用户设备执行跟踪区更新流程或路由区更新流程;
所述第一移动管理网元通过所述跟踪区更新流程或所述路由区更新 流程指示所述用户设备 ISR去激活。
10、 根据权利要求 1-3任一所述的方法, 其特征在于, 所述第一移动 管理网元接收所述用户设备发送的请求消息, 对所述用户设备进行业务恢 复包括:
所述第一移动管理网元接收所述用户设备发送的跟踪区更新请求消 息或路由区更新请求消息; 所述第一移动管理网元选择第三服务网关, 其中, 所述第三服务网关 包括所述第一服务网关或除所述第一服务网关之外的另一服务网关;
所述第一移动管理网元向所述第三服务网关发送创建会话请求消息; 所述第一移动管理网元接收所述第三服务网关发送的创建会话响应 消息;
所述第一移动管理网元向所述第三服务网关发送修改承载请求消息; 所述第一移动管理网元接收所述第三服务网关发送的修改承载响应 消息;
所述第一移动管理网元向所述用户设备发送跟踪区更新接受消息或 者路由区更新接受消息, 指示所述用户设备 ISR去激活。
11、 根据权利要求 5所述的方法, 其特征在于, 所述第一移动管理网 元向所述用户设备发送第二寻呼消息之前, 还包括:
所述第一移动管理网元接收第二服务网关发送的第三寻呼消息, 其 中, 所述第二服务网关包括所述第一服务网关或所述第一服务网关所在服 务网关池中的任意一个服务网关, 所述第三寻呼消息是所述第二服务网关 接收到分组数据网关发送的寻呼消息后发送给所述第一移动管理网元的。
12、 根据权利要求 11 所述的方法, 其特征在于, 所述第三寻呼消息 携带所述用户设备的第一标识和 /或所述第一服务网关发生部分故障的指 示信息。
13、 一种移动管理网元, 其特征在于, 所述移动管理网元为空闲模式 限制信令 ISR关联的第一移动管理网元, 包括:
接收模块, 用于接收第一消息, 所述第一消息用于通知所述第一移动 管理网元用户设备所在的第一服务网关发生部分故障;
恢复模块, 用于通过寻呼所述用户设备, 对所述用户设备进行业务恢 复, 或, 接收所述用户设备发送的请求消息, 对所述用户设备进行业务恢 复。
14、 根据权利要求 13所述的移动管理网元, 其特征在于,
所述接收模块, 具体用于接收与其 ISR关联的移动管理实体 MME发 送的通知消息。
15、 根据权利要求 14所述的移动管理网元, 其特征在于, 所述接收模块接收的所述通知消息携带所述用户设备的第一标识和 / 或所述第一服务网关发生部分故障的指示信息。
16、 根据权利要求 13所述的移动管理网元, 其特征在于,
所述接收模块, 具体用于接收第二服务网关发送的第三寻呼消息, 其 中, 所述第二服务网关包括所述第一服务网关或所述第一服务网关所在服 务网关池中的任意一个服务网关, 所述第三寻呼消息是所述第二服务网关 接收到分组数据网关发送的寻呼消息后发送给所述移动管理网元的, 所述 第三寻呼消息携带所述第一服务网关发生部分故障的指示信息。
17、 根据权利要求 13-15任一所述的移动管理网元, 其特征在于, 所述恢复模块, 具体用于向所述用户设备发送第二寻呼消息, 所述第 二寻呼消息用于指示所述用户设备发起服务请求流程; 以及接收所述用户 设备发送的服务请求消息, 执行第一业务恢复流程, 对所述用户设备进行 业务恢复; 其中, 所述用户设备的上下文被所述第一移动管理网元保留。
18、 根据权利要求 16所述的移动管理网元, 其特征在于,
所述恢复模块, 具体用于向所述用户设备发送第二寻呼消息, 所述第 二寻呼消息用于指示所述用户设备发起服务请求流程; 以及接收所述用户 设备发送的服务请求消息, 执行第一业务恢复流程, 对所述用户设备进行 业务恢复; 其中, 所述用户设备的上下文被所述第一移动管理网元保留。
19、 根据权利要求 13-15任一所述的移动管理网元, 其特征在于, 所述恢复模块, 具体用于接收所述用户设备发送的服务请求消息, 执 行第一业务恢复流程, 对所述用户设备进行业务恢复; 其中, 所述用户设 备的上下文被所述第一移动管理网元保留。
20、 根据权利要求 13-15任一所述的移动管理网元, 其特征在于, 所述恢复模块, 具体用于删除所述用户设备的上下文, 向所述用户设 备发送第一寻呼消息, 所述第一寻呼消息用于指示所述用户设备重新发起 附着流程。
21、 根据权利要求 17-19任一所述的移动管理网元, 其特征在于, 所述恢复模块, 具体用于执行服务网关迁移流程, 向所述用户设备发 送临时标识重分配命令消息, 触发所述用户设备执行跟踪区更新流程或路 由区更新流程; 通过所述跟踪区更新流程或所述路由区更新流程指示所述 用户设备 ISR去激活。
22、 根据权利要求 13-15任一所述的移动管理网元, 其特征在于, 所述恢复模块, 具体用于接收所述用户设备发送的跟踪区更新请求消 息或路由区更新请求消息, 选择第三服务网关, 其中, 所述第三服务网关 包括所述第一服务网关或除所述第一服务网关之外的另一服务网关; 向所 述第三服务网关发送创建会话请求消息, 接收所述第三服务网关发送的创 建会话响应消息; 以及向所述第三服务网关发送修改承载请求消息, 接收 所述第三服务网关发送的修改承载响应消息; 向所述用户设备发送跟踪区 更新接受消息或者路由区更新接受消息, 指示所述用户设备 ISR去激活。
23、 根据权利要求 17所述的移动管理网元, 其特征在于,
所述接收模块,还用于接收第二服务网关发送的第三寻呼消息,其中, 所述第二服务网关包括所述第一服务网关或所述第一服务网关所在服务 网关池中的任意一个服务网关, 所述第三寻呼消息是所述第二服务网关接 收到分组数据网关发送的寻呼消息后发送给所述第一移动管理网元的。
24、 根据权利要求 23所述的移动管理网元, 其特征在于,
所述接收模块接收的所述第三寻呼消息携带所述用户设备的第一标 识和 /或所述第一服务网关发生部分故障的指示信息。
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