WO2009117886A1 - 设备复位通知方法及系统、服务及分组数据网关和移动管理网元 - Google Patents

设备复位通知方法及系统、服务及分组数据网关和移动管理网元 Download PDF

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Publication number
WO2009117886A1
WO2009117886A1 PCT/CN2008/073357 CN2008073357W WO2009117886A1 WO 2009117886 A1 WO2009117886 A1 WO 2009117886A1 CN 2008073357 W CN2008073357 W CN 2008073357W WO 2009117886 A1 WO2009117886 A1 WO 2009117886A1
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Prior art keywords
network element
reset
mobility management
packet data
management network
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PCT/CN2008/073357
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English (en)
French (fr)
Inventor
朱守才
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华为技术有限公司
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Publication of WO2009117886A1 publication Critical patent/WO2009117886A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/19Connection re-establishment

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a device reset notification method and system, a service, a packet data gateway, and a mobility management network element.
  • Background technique
  • GPRS General Packet Radio Service
  • UMTS Universal Mobile Telecommunications System
  • RNC radio network controller
  • GTP GPRS Tunneling Protocol
  • SGSN GPRS Service Support Node
  • the GTP Error Indication message, or the RAB release request message from the RNC carries the "GTP resource unavailable” cause value, indicating that the PDP context on the GGSN does not exist, and the SGSN sets the related PDP context to be invalid.
  • the reason value is "re-activation required”.
  • the inventors found that in the current GPRS/UMTS system, after the SGSN is reset, all PDP contexts of the SGSN are destroyed and cleared. After the GGSN/SGSN is reset due to a fault, the GGSN/SGSN does not actively trigger the user to re-establish the PDP context or initiate the re-attachment process. For example, when the IP phone is called, the service cannot be accessed in time, and the service service delay is long. The quality of business services. In the existing E-UTRAN evolved network architecture, since there is no interface between the Mobility Management Entity (MME) and the Packet Data Network Gateway (P-GW), the MME or P-GW After the reset occurs, the other party cannot directly know. In the existing network system, after the network element of the P-GW, the MME, and the S-GW is reset, the other network elements cannot know the reset information in time, causing the service quality to be degraded or the network element to work abnormally. Summary of the invention
  • the embodiment of the present invention provides a device reset notification method and system, a service, a packet data gateway, and a mobility management network element, which are used to invalidate or delete user context information devices related to other network elements after a network element is reset.
  • the user context is restored by rebuilding the bearer connection, etc., and the service service is restored in time to improve the service quality of the service.
  • the embodiment of the present invention provides a device reset notification method, including: the second network element learns that the first network element is reset, and sends a notification message to the third network element; the third network element according to the notification message User context information related to a network element is set to be invalid or deleted.
  • the embodiment of the present invention further provides a device reset notification method, including: the packet data gateway learns that the service gateway is reset, and sends device level identification information of the mobility management network element to the serving gateway, where the service gateway is configured according to the device level identification information.
  • the service gateway is configured according to the device level identification information.
  • the corresponding mobile management network element is located, and the user bearer context information is restored.
  • the embodiment of the invention provides a mobility management network element, including:
  • a first receiving module configured to receive a serving gateway after the packet data gateway is reset Notification message sent
  • a first processing module configured to set, according to the notification message, user bearer context information related to the reset packet data gateway to be invalid or deleted.
  • An embodiment of the present invention provides a service gateway, including:
  • a learning module configured to learn reset information of the first network element
  • the notification module is configured to send, to the third network element, a notification message that the first network element is reset.
  • An embodiment of the present invention provides another service gateway, including:
  • a second receiving module configured to receive device level identification information of the mobility management network element sent by the packet data gateway after the serving gateway is reset;
  • the recovery module is configured to locate the corresponding mobility management network element according to the device level identification information, and restore the user bearer context information.
  • the embodiment of the invention provides a packet data gateway, including:
  • a third receiving module configured to receive a notification message sent by the serving gateway after the mobility management network element is reset, where the notification message includes device level identification information and reset indication information of the mobility management network element;
  • a third processing module configured to set, according to the notification message, user context information related to the mobility management network element that is reset to be invalid or deleted.
  • An embodiment of the present invention provides a device reset notification system, including a mobility management network element, a service gateway, and a packet data gateway.
  • the service gateway is configured to learn that the packet data gateway is reset, and send a notification message to the mobility management network element.
  • the mobility management network element is configured to set, according to the notification message, user context information related to the packet data gateway to be invalid or deleted.
  • An embodiment of the present invention provides another device reset notification system, including a mobility management network element, a service gateway, and a packet data gateway.
  • the service gateway is configured to learn that the mobility management network element is reset, and send a notification to the packet data gateway.
  • a message, the notification message includes device level identification information and reset indication information of the mobility management network element, where the packet data gateway is configured to set user context information related to the mobility management network element according to the notification message. Invalid or deleted.
  • An embodiment of the present invention provides a device reset notification system, including a mobility management network element, a service gateway, and a packet data gateway.
  • the packet data gateway is configured to learn that the service gateway is reset, and send a mobility management network to the serving gateway.
  • the device-level identification information of the element is used to locate the corresponding mobility management network element according to the device-level identification information, and restore the user-bearing context information.
  • the device reset notification method and system, the mobility management network element, the service gateway, and the packet data gateway provided by the embodiment of the present invention, when one of the network elements in the network is reset, the reset information is notified to the remaining network elements for corresponding processing.
  • the original bearer connection is deleted, and the user context information of the reset NE is restored by re-establishing the connection or re-attachment of the public data network to ensure the service quality of the service.
  • FIG. 1 is a signaling flow chart of a packet data gateway reset processing method according to Embodiment 1 of the present invention
  • FIG. 2 is a signaling flow chart of a second embodiment of a packet data gateway reset processing method according to the present invention
  • FIG. 4 is a signaling flow chart of Embodiment 4 of a packet data gateway reset processing method according to the present invention
  • FIG. 5 is a signaling flow chart of Embodiment 5 of a packet data gateway reset processing method according to the present invention
  • FIG. 7 is a signaling flow chart of a mobile management network element reset processing method according to Embodiment 1 of the present invention
  • FIG. 8 is a second embodiment of a mobile management network element reset processing method according to the present invention
  • FIG. 9 is a signaling flowchart of an embodiment of an attaching process according to the present invention
  • FIG. 10 is a signaling flowchart of an embodiment of a UE initiated PDN connection process according to the present invention
  • FIG. 11 is a signaling flowchart of an embodiment of a TAU process according to the present invention
  • FIG. 13 is a signaling flow chart of Embodiment 1 of a service gateway reset processing method according to the present invention
  • FIG. 14 is a schematic flowchart of a second embodiment of a service gateway reset processing method according to the present invention.
  • Embodiment 16 is a schematic structural diagram of Embodiment 1 of a service gateway according to the present invention.
  • FIG. 17 is a schematic structural diagram of Embodiment 2 of a service gateway according to the present invention.
  • 18 is a schematic structural diagram of an embodiment of a packet data gateway according to the present invention.
  • FIG. 19 is a schematic structural diagram of an embodiment of a device reset notification system according to the present invention.
  • FIG. 20 is a schematic structural diagram of another embodiment of a device reset notification system according to the present invention. detailed description
  • E-UTRAN Evolved UMTS Territorial Radio Access Network
  • MME Mobility Management Entity
  • S-GW is a user plane anchor between 3GPP access networks Point, terminate the interface of the E-TURAN
  • P-GW is a user plane anchor between the 3GPP access network and the non-3GPP access network, and terminates the interface with the external Packet Data Network (PDN).
  • PDN Packet Data Network
  • PCRF Policy and Charging Rule Function
  • HSS Home Subscriber Server
  • UTRAN UMTS terrestrial wireless access UMTS Terrestrial Radio Access Network
  • GERAN GSM/EDGE Radio Access Network
  • SGSN Serving GPRS Supporting Node
  • Non-3GPP IP access networks are mainly Access networks defined by non-3GPP organizations, such as Wireless Local Area Network (WLAN), Worldwide Interoperability for Microwave Access (Wimax), Code Division Multiple Access (CDMA) Network
  • WLAN Wireless Local Area Network
  • Wimax Worldwide Interoperability for Microwave Access
  • CDMA Code Division Multiple Access
  • the Authentication, Authorization and Accounting Server is used to perform access authentication, authorization, and accounting functions for the user terminal (hereinafter referred to as UE).
  • the second network element sends a notification message to the third network element, where the third network element associates the user context related to the first network element according to the notification message.
  • the information is set to be invalid or deleted, so that other network elements can process the abnormality caused by the device reset in time, for example, reestablishing the PDN connection with the user terminal or instructing the user terminal to re-attach the network to restore the user context information and ensure the normal service of the service. Carry out and improve the quality of business services.
  • the S-GW when the packet data gateway is reset, the S-GW sends a notification message to the mobility management network element, where the mobility management network element deletes user bearer context information related to the reset packet data gateway; wherein the packet data gateway includes P - GW or GGSN, the mobility management network element comprising an MME or an SGSN.
  • the S-GW sends a notification message to the MME to notify the MME that the P-GW has been reset due to a fault.
  • the MME learns the message, the MME deletes the user bearer context information related to the reset P-GW.
  • the MME may also instruct the terminal to re-establish the PDN connection or re-attach, so that the user can enjoy the new service in time.
  • the MME may perform the bearer deletion process passively or actively.
  • the MME performs the bearer deletion process: the notification message sent by the S-GW to the MME may specifically be the delete bearer request message.
  • the deletion bearer request message includes the reset indication information of the S-GW, where the information is used to indicate that the P-GW has been reset, and may be a reset indication identifier or a cause value; after receiving the delete bearer request message, the MME sends the The S-GW returns the bearer response information, and deletes the user bearer context information related to the P-GW in which the reset occurs.
  • the process in which the MME actively performs the bearer deletion is: the S-GW sends an indication message to the MME, where the indication message includes the packet Reset indication information of the data gateway and device level identification information of the packet data gateway;
  • the MME actively initiates a bearer deletion procedure according to the indication information, and deletes user bearer context information related to the reset packet data gateway.
  • FIG. 1 is a signaling flowchart of Embodiment 1 of a method for resetting a packet data gateway according to the present invention. As shown in FIG. 1, the method includes the following steps:
  • Step 2a The S-GW sends a delete bearer request message to the MME/SGSN, where the message carries an identifier or a cause value for indicating a P-GW reset; the MME receives the message, and sets the bearer context of the user to be invalid or deleted.
  • Step 3a The MME/SGSN immediately returns a delete bearer response message to the S-GW.
  • Step 4a The MME/SGSN sends a bearer deactivation message to the radio access network element eNodeB/RNC. Since the MME/SGSN knows the P-GW reset information, The message carries the reconstructed PDN connection identifier or the cause value to the user terminal UE;
  • Step 5a The eNodeB/RNC sends a bearer release request message to the UE, and carries the reconstructed PDN connection identifier or the cause value.
  • Step 6a The UE returns a bearer release response message.
  • Step 7a The eNodeB/RNC returns a deactivation response message.
  • Step 8a When the UE wants to reestablish the PDN connection, the UE continues to perform the PDN connection according to the reconstructed PDN connection identifier or selectively initiates the PDN connection according to the reset indication information, that is, the cause value.
  • Embodiment 2 is a signaling flowchart of Embodiment 2 of a method for resetting a packet data gateway according to the present invention. As shown in FIG. 2, the method includes the following steps:
  • Step lb After the S-GW learns that the P-GW is reset, the S-GW sets all user bearer contexts related to the P-GW to be invalid or deleted, and the S-GW initiates a bearer deactivation process to all related users.
  • Step 2b The S-GW sends a delete bearer request message to the MME/SGSN, and carries the identifier or cause value information used to indicate the P-GW reset.
  • the MME knows that the P-GW is reset. Can initiate the display of the "Detach"process;
  • Step 3b The MME/SGSN may immediately return a delete bearer response message to the S-GW.
  • Step 4b The MME/SGSN sends a disconnect request "Detach Request" information to the UE, where the split request information includes re-attachment for indicating user re-attachment. Identifying or the reset indication information;
  • Step 5b the UE returns to receive the "Detach Accept" message separately;
  • Step 6b When the UE is to re-attach, the UE continues to perform re-attachment according to the re-attachment identifier or selectively re-attaches according to the reset indication information.
  • Embodiment 3 is a signaling flowchart of Embodiment 3 of a method for resetting a packet data gateway according to the present invention. As shown in FIG. 3, the method includes the following steps:
  • Step lc After the S-GW learns that the P-GW is reset, the S-GW sets the P-GW related user bearer context to be invalid or deleted, and the S-GW initiates a bearer deactivation process to all related users.
  • Step 2c The S-GW sends an indication message to the MME, where the indication message includes a reset indication information of the P-GW and device level identification information of the P-GW.
  • Step 3c The MME actively sends a delete bearer request message to the S-GW, where the message carries an identifier or a cause value for indicating a P-GW reset; the MME receives the message, and sets the bearer context of the user to be invalid or deleted.
  • Step 4c The S-GW returns a delete bearer response message to the MME.
  • Step 5c The MME sends a deactivation request to the radio access network element eNodeB/RNC, and carries the reestablished PDN connection identifier or reset indication information.
  • Step 6c The eNodeB/RNC sends a bearer release request to the user terminal UE, and carries the reconstructed PDN connection identifier or the reset indication information.
  • Step 7c The UE returns a bearer release response to the eNodeB/RNC.
  • Step 8c The eNodeB/RNC returns a deactivation bearer response to the MME.
  • Step 9c When the UE is to re-establish the PDN connection, the UE continues to perform the PDN connection according to the reestablished PDN connection identifier, or selectively initiates the PDN according to the reset indication information. connection. Step 3c and step 5C in the above process may be performed simultaneously. Of course, there is no specific time-order relationship between step 4c and steps 6c, 7c, 8c and 9c.
  • Embodiment 4 is a signaling flowchart of Embodiment 4 of a method for resetting a packet data gateway according to the present invention. As shown in FIG. 4, the method includes the following steps:
  • Step ld the S-GW learns that the P-GW is reset by detecting
  • Step 2d The S-GW sends an indication message to the relevant MME/SGSN, and is used to carry an identifier or a cause value indicating the P-GW reset. After receiving the indication message, the MME/SGSN knows that the P-GW is reset, and triggers the P-GW. Related users initiate a Detach process;
  • Step 3d The MME/SGSN sends a separation request "Detach Request" information to the UE, where the separation request information includes re-attachment identifier or reset indication information for indicating user re-attachment;
  • Step 4d the UE returns to receive the "Detach Accept" message
  • Step 5d The MME/SGSN initiates a bearer deletion request to the S-GW.
  • Step 6d The S-GW returns a bearer deletion response message.
  • Step 7d When the UE is to re-attach, the UE continues to perform re-attachment according to the re-attachment identifier or selectively re-attaches according to the reset indication information.
  • Step 3d and step 5d are performed simultaneously in the above process. Of course, there is no specific time relationship between step 4d and step 6d;
  • the S-GW obtains the reset information of the P-GW by detecting, and may also trigger the specific information to trigger the reset information of the P-GW. For example, the S-GW sends the uplink data to the S-GW. The P-GW, the P-GW returns an error indication message due to the reset, and the error indication message includes the reset indication information of the P-GW.
  • FIG. 5 is a signaling flowchart of Embodiment 5 of a method for resetting a packet data gateway according to the present invention. As shown in FIG. 5, the method includes the following steps:
  • Step le The uplink data is sent to the P-GW, and the P-GW detects that there is no relevant context due to the P-GW reset.
  • Step 2e The P-GW sends an error indication "Error Indication" message to the S-GW, carrying an identifier or a cause value for indicating the P-GW reset; the S-GW carries the related user bearer.
  • the context is set to invalid or deleted;
  • Step 3e The S-GW sends a delete bearer request message to the MME/SGSN, where the message carries an identifier or a cause value for indicating a P-GW reset.
  • the MME receives the message, and sets the bearer context of the user to be invalid or deleted.
  • Step 4e The MME/SGSN immediately returns a delete bearer response message to the S-GW.
  • Step 5e The MME/SGSN sends a bearer deactivation message to the radio access network element eNodeB/RNC. Since the MME/SGSN knows the P-GW reset information, The message carries the reconstructed PDN connection identifier or the cause value to the user terminal UE;
  • Step 6e The eNodeB/RNC sends a bearer release request message to the UE, and carries the reconstructed PDN connection identifier or the cause value.
  • Step 7e The UE returns a bearer release response message.
  • Step 8e The eNodeB/RNC returns a deactivation response message.
  • Step 9e When the UE wants to perform a PDN connection, the UE continues to perform a PDN connection according to the reconstructed PDN connection identifier or selectively initiates a PDN connection according to the reset indication information.
  • FIG. 6 is a signaling flowchart of Embodiment 6 of a method for resetting a packet data gateway according to the present invention. As shown in FIG. 6, the method includes the following steps:
  • Step lf the uplink data is sent to the P-GW, and the P-GW detects that there is no relevant context due to the P-GW reset.
  • Step 2f The P-GW sends an error indication "Error Indication" message to the S-GW, carrying an identifier or a cause value for indicating the P-GW reset; the S-GW sets the related user bearer context to be invalid or deleted;
  • Step 3f The S-GW sends a delete bearer request message to the MME, and carries the identifier or cause value information used to indicate the P-GW reset.
  • the MME knows that the P-GW is reset, and may initiate a Detach process.
  • Step 4f The MME may immediately return a delete bearer response message to the S-GW.
  • Step 5f The MME sends a disconnect request "Detach Request" information to the UE, where the split request information includes a re-attachment identifier or a reset indication for indicating user re-attachment.
  • the foregoing embodiments are all embodiments of the processing method after the packet data gateway is reset.
  • the service gateway learns the information about the reset of the packet data gateway through the specific network event, the service gateway requests the mobility management network element to delete the originally established bearer or The mobile management network element sends the indication information to the mobile management network element, and the mobile management network element actively performs the deletion process of the original bearer. Then, the network side actively informs the user terminal to reestablish the PDN connection or re-attach, and reconstructs the bearer context to resume the service service in time.
  • the S-GW when the MME is reset, the S-GW sends a notification message to the P-GW, where the notification message includes device level identification information and reset indication information of the MME, and the P-GW associates the user context related to the MME.
  • the information is set to be invalid or deleted.
  • the S-GW is notified of the reset information or the S-GW detects that the MME is reset.
  • the S-GW sends a notification message to the P-GW, which not only carries the MME.
  • the reset indication information further carries the device-level identification information of the MME in which the reset occurs, and the P-GW learns to set the user context information related to the MME corresponding to the device-level identifier carried therein to be invalid according to the received notification message. Or deleting the user context information; updating the user context information when the subsequent re-establishment of the bearer connection, ensuring the smooth running of the service, and avoiding the signaling storm between the S-GW and the P-GW, causing the S-GW to work abnormally. .
  • FIG. 7 is a signaling flowchart of Embodiment 1 of a method for resetting a mobile management network element according to the present invention. As shown in FIG. 7, the method includes the following steps:
  • Step lg the MME/SGSN sends a message to the S-GW to indicate that the device is reset, or the S-GW detects that the MME/SGSN device is reset;
  • Step 2g The S-GW sends a device-level indication message to the P-GW, carrying the MME/SGSN device level identifier (such as the IP address of the MME/SGSN) and the device reset identifier; setting the user context information related to the MME/SGSN device Invalid or deleted; Step 3g, after receiving the indication message, the P-GW will be associated with the MME/SGSN device.
  • the user context information setting is invalid or deleted.
  • FIG. 8 is a signaling flowchart of Embodiment 2 of a method for resetting a mobile management network element according to the present invention. As shown in FIG. 8, the method includes the following steps:
  • Step lh After the MME is reset, the downlink data packet sent by the S-GW is received; Step 2h, the MME returns an error indication "Error Indication" message to the S-GW, and carries the information of the MME reset.
  • Step 3h The S-GW sends an indication message to the P-GW, carrying the device-level identifier of the MME (for example, the IP address of the MME), the device reset identifier, and the like; setting the user context information related to the MME device to be invalid or deleted;
  • the device-level identifier of the MME for example, the IP address of the MME
  • the device reset identifier for example, the device reset identifier, and the like
  • Step 4h After receiving the message, the P-GW sets the user context information related to the MME device to be invalid or deleted.
  • the foregoing embodiment is a processing method after the mobile management network element in the network is reset.
  • the reset information of the mobile management network element may be actively notified or the service network element is learned by the detection, or may be triggered by the network event, and the service network element passes.
  • the error information sent by the mobility management network element is learned; and in the subsequent processing, the service network element informs the packet data gateway of the device level identification information of the mobile management network element that is reset, and the service network element and the packet data gateway will be associated with the mobile
  • the user context information related to the management NE is set to be invalid or deleted directly.
  • the existing process should be adaptively modified so that when the mobility management network element changes, the packet data gateway timely updates the device level identifier of the mobile management network element.
  • FIG. 9 is a signaling flowchart of an embodiment of an attach procedure according to the present invention.
  • steps 1 and 2 initiate an attach request message for a user
  • steps 3 and 4 are user identification request processes
  • step 5 is user and device legality.
  • the authentication process; step 6 is to delete the bearer context process; step 7-11 is the location update and insert contract data process; step 12-22 is the default bearer build
  • steps 23, 24 are the process of updating the APN and PGW information.
  • the device When the MME sends the default bearer request message "Create Default Bearer Request" to the S-GW in step 12, the device includes the device-level identification information of the mobility management network element, and the device-level identifier.
  • step 10 is a signaling flowchart of an embodiment of a UE initiating a PDN connection process, as shown in FIG. 10, where step 1 is a user initiates a PDN connection request message, and step 2-12 is a default bearer establishment process, step 13. 14 is the process of updating the ⁇ and PGW information.
  • step 2 when the default bearer request message "Create Default Bearer Request" is sent to the S-GW, the device-level identification information of the mobility management network element, the device-level identifier, is included in the create default bearer request message.
  • the device-level identification information of the mobility management network element the device-level identifier
  • MME ID other device-level identification or combination of identifiers, etc.
  • the S-GW sends a message to create a default bearer request "Create Default Bearer Request" to the P-GW, carrying the MME device-level identifier, P- The GW saves the MME device level identifier.
  • FIG. 11 is a signaling flowchart of an embodiment of a TAU process according to the present invention.
  • steps 1-3 initiate a TAU request message for a user; steps 4, 5, and 7 are users.
  • Step 8 When the MME changes, if the S-GW also changes, the MME sends a "Create Bearer Request” message to the S-GW. If the S-GW does not change, the MME sends an "Update Bearer Request” message to the S-GW.
  • the device-level identifier of the MME is carried in the above two messages, and the device-level identifier may be "IP Addr", "MME ID”, other device-level identifiers or identifier combinations, etc.; whether the S-GW changes in step 9, As long as the MME changes, the S-GW needs to send "Update Bearer" to the P-GW.
  • the MME/SGSN changes in the TAU or the routing area update (RAU) in other cases, which indicates the MME device-level identifier in the P-GW. (including the TAU/RAU process between EUTRAN and EUTRAN and UTRAN, etc.), all of which are similarly processed, and will not be described here.
  • RAU routing area update
  • the MME changes in step 15, the MME sends an "Update Bearer Request" message to the S-GW, and carries the device level identifier of the MME. If the device level identifier is "IPAddr", it is carried in the message.
  • IPAddr there is “IPAddr” to the S-GW, so no modification can be made; in step 16, regardless of whether the S-GW changes, the S-GW needs to send an "Update Bearer Request" message to the P-GW, carrying the MME, as long as the MME changes.
  • Device level identification updating the MME device level identifier in the P-GW. It is worth noting that the MME/SGSN changes in the handover process in other situations (including the internal EUTRAN and the handover process between EUTRAN and UTRAN/GERAN), and similar processing is omitted here.
  • the P-GW stores the device level identifier of the MME.
  • the P-GW When the S-GW is reset in the E-UTRAN network, the P-GW sends the device-level identification information of the MME to the S-GW, and the S-GW re-establishes the bearer with the P-GW according to the device-level identification information. After the P-GW learns that the S-GW is reset, the context information in the S-GW has been lost. At this time, the P-GW sends the device-level identification information of the corresponding MME to the reset S-GW to re-establish the bearer. , thereby restoring S-GW context information.
  • FIG. 13 is a signaling flowchart of Embodiment 1 of a service gateway reset processing method according to the present invention. As shown in FIG. 13, the method includes the following steps:
  • Step li the P-GW learns that the S-GW is reset by detecting
  • Step 2 The P-GW sends a create bearer request message to the S-GW, and carries the MME.
  • Device level identifier such as "IPAddr"
  • Step 3 The S-GW sends a create bearer request message to the MME according to the device level identifier of the MME, such as an IP address.
  • Step 4 The MME creates a bearer message with the radio access network element eNodeB/RNC.
  • Step 5 The radio access network element eNodeB/RNC creates a bearer message with the user terminal.
  • Step 6 The MM sends a corresponding bearer to the S-GW. Message
  • Step 7 The S-GW sends a corresponding message to the P-GW to create a bearer.
  • step 4i and step 5i may not be performed.
  • the P-GW learns that the S-GW is reset, the bearer establishment process is initiated, and then the recovery can be resumed.
  • Context information in the S-GW such as default bearer information
  • the P-GW informs the S-GW of the device-level identifier of the MME, such as the IP Addr, and the S-GW can directly find the message.
  • the MME initiates a 7-layer setup message to the corresponding MME.
  • FIG. 14 is a signaling flowchart of Embodiment 2 of a service gateway reset processing method according to the present invention. As shown in FIG. 14, the method includes the following steps:
  • Step lj the S-GW receives downlink data
  • Step 2 j the S-GW has no relevant context information due to the reset, and therefore returns an error indication "Error Indication" message to the P-GW;
  • Step 3 The P-GW sends a create bearer request message to the S-GW, and carries the device level identifier of the MME, for example, "IPAddr";
  • Step 4 The S-GW sends a create bearer request message to the MME, and carries the device level identifier of the MME, for example, "IPAddr";
  • Step 5 The MME creates a bearer message with the radio access network element eNodeB/RNC.
  • Step 6 The radio access network element eNodeB/RNC creates a bearer message with the user terminal.
  • Step 7 The MM sends a bearer corresponding to the S-GW. Message
  • Step 8 The S-GW sends a corresponding message to the P-GW to create a bearer.
  • Step 5j and step 6j are optional steps.
  • the difference between this embodiment and the previous embodiment is that the P-GW learns that the S-GW reset information is through a network event, and thereby triggers the creation of a bearer request message.
  • the reset information is notified to the remaining network elements for corresponding processing, and the original The bearer connection is used to restore the user context information of the reset NE to ensure the service quality of the service by re-establishing the connection or re-attachment of the public data network.
  • the mobility management network element includes a first receiving module 11 and a first processing module 12, where the first receiving module 11 is used as a packet data gateway.
  • the first processing module 12 is configured to set the user bearer context information related to the packet data gateway that is reset according to the notification message to be invalid or deleted.
  • the first receiving module 11 receives the notification message sent by the S-GW, and the MME knows that the P-GW has been reset, and cannot perform normal service services.
  • the first receiving module 11 includes a first receiving submodule 111 and/or a second receiving submodule 112, where the first receiving submodule 111 is used to perform the necessary processing to restore the user context information of the reset network element.
  • the block 112 is configured to receive an indication message sent by the S-GW when the P-GW is reset, where the indication message includes the reset indication information of the P-GW and the device level identification information of the P-GW.
  • the first receiving sub-module 111 passively performs the bearer deletion process. After the bearer is deleted, the user terminal re-establishes the PDN connection process or the user terminal re-attach process, and the re-attachment recovery is performed.
  • the user context information is used to continue the new service.
  • the second receiving sub-module 112 receives the indication message sent by the S-GW, and the MME actively initiates the bearer deletion process. After the bearer deletion, the user terminal may re-establish the PDN connection process or the user terminal. The attach process, the rebuild bearer restores the user context information, and continues the new service.
  • the MME further includes a first sending module 13 configured to send a reset indication message to the S-GW when the device is reset, and the S-GW performs a subsequent processing procedure according to the message.
  • the mobility management network element provided in this embodiment can perform a passive or active bearer deletion process according to different messages sent by the received serving gateway when the packet data gateway is reset, and delete the user related to the reset packet data gateway. Carrying the context information, and optionally performing the re-establishing PDN connection or re-attachment process of the user terminal, restoring the user context information of the reset packet data gateway to ensure the service quality of the service.
  • FIG. 16 is a schematic structural diagram of Embodiment 1 of a service gateway according to the present invention.
  • the service gateway includes a learning module 21 and a notification module 22, wherein the learning module 21 is configured to learn reset information of the first network element, and the notification module 22 uses After the reset information of the first network element is learned, the notification message that the first network element is reset is sent to the third network element.
  • the notification module 22 notifies the third network element that the first network element is reset, and the third network element performs the third network element. Processing accordingly.
  • the first network element and the third network element may be a mobility management entity or a packet data gateway, respectively.
  • the notification module 22 includes a second sending module 221 and/or a third sending module 222 respectively for the packet data gateway and the mobility management network element.
  • the resetting process is performed, wherein the second sending module 221 is configured to send the notification message to the mobility management network element after the reset of the packet data gateway is obtained; the third sending module 222 is configured to: after learning that the mobility management network element is reset, The packet data gateway sends a notification message, where the notification message includes device level identification information and reset indication information of the mobility management network element.
  • the second sending module 221 includes a first sending submodule 2211 and/or a second sending submodule 2212, where the first sending submodule 2211 is configured to send a delete bearer request message to the mobility management network element, where the delete bearer request is sent.
  • the message includes the reset indication information of the packet data gateway; the mobile management network element is instructed to perform a bearer deletion process; the second sending sub-module 2212 is configured to send a notification message to the mobility management network element, where the notification message includes a reset indication of the packet data gateway. Information and device level identification information; the mobility management network element actively performs the bearer deletion process according to the indication of the notification message.
  • the service gateway further includes a second processing module 23 for setting the relevant user context to be invalid or deleted according to the notification message after the packet data gateway or the mobility management network element is reset.
  • the service gateway provided by the embodiment sends a reset notification message to the mobility management network element or the packet data gateway, and sets the related user context information stored by itself to be invalid. Or delete and restore the user context through subsequent rebuild bearers.
  • FIG. 17 is a schematic structural diagram of Embodiment 2 of a service gateway according to the present invention.
  • the service gateway includes a second receiving module 24 and a recovery module 25, where the second receiving module 24 is configured to: after the service gateway is reset, Receiving the device-level identification information of the mobility management network element sent by the packet data gateway; the recovery module 25 is configured to locate the corresponding mobility management network element according to the device-level identification information, and restore the user bearer context information.
  • the packet data gateway After the service gateway itself is reset, the packet data gateway sends the device level identifier of the mobility management network element to the serving gateway, and after receiving the identifier, the second receiving module 24 passes the recovery.
  • the complex management module 25 reestablishes the bearer recovery user bearer context information with the mobility management network element corresponding to the identifier.
  • the serving gateway After the service gateway itself is reset, the serving gateway in this embodiment recovers the user context information according to the reconstructed network element and the bearer.
  • FIG. 18 is a schematic structural diagram of an embodiment of a packet data gateway according to the present invention.
  • the packet data gateway includes a third receiving module 31 and a third processing module 32, where the third receiving module 31 is configured to be used when the mobility management network element occurs.
  • the notification message includes device level identification information and reset indication information of the mobility management network element
  • the third processing module 32 is configured to reset the location according to the notification message.
  • the user context information related to the mobility management network element is set to be invalid or deleted. Specifically, when the mobility management network element is reset, the mobility management network element notifies the service gateway of the reset notification information, and the third receiving module 31 receives the reset notification.
  • the third context module 32 sets the user context information related to the reset mobility management network element to be invalid or deleted, and restores the user context through the subsequent bearer reestablishment procedure.
  • the packet data gateway further includes a fourth sending module 33, configured to send device level identification information of the mobility management network element to the serving gateway when the serving gateway is reset. If the service gateway is reset, the device-level identification information of the mobility management network element is sent to the service gateway by using the fourth sending module 33, so that the serving gateway can find a corresponding mobility management network element to initiate a bearer setup message according to the device-level identification information. .
  • the packet data gateway provided in this embodiment can process the related user context according to the notification message sent by the serving gateway after the mobility management network element is reset. After the service gateway is reset, according to the device level of the received mobility management network element. Identifies the rebuild bearer to ensure that no abnormality occurs on the network.
  • the device reset notification system includes a mobility management network element 1, a serving gateway 2, and a packet data gateway 3, wherein the service gateway 2 is configured to learn that the packet data gateway 3 is reset, and send a notification message to the mobility management network element 1; 1 for setting user context information related to the packet data gateway 3 to be invalid or deleted according to the notification message.
  • the notification message sent by the service gateway 2 to the mobility management network element 1 is divided into two cases.
  • the service gateway 2 includes a first notification module 26 and/or a second notification module 27 for sending two notification messages, specifically
  • the first notification module 26 is configured to send a delete bearer request message to the mobility management network element, where the delete bearer request message includes reset indication information of the packet data gateway, and the second notification module 27 is configured to use the mobility management network.
  • the meta sends a notification message including reset indication information of the packet data gateway and device level identification information of the packet data gateway.
  • FIG. 20 is a schematic structural diagram of another embodiment of a device reset notification system according to the present invention.
  • the serving gateway 2 is configured to learn that the mobility management network element 1 is reset, to the grouping.
  • the data gateway 3 sends a notification message, where the notification message includes device level identification information and reset indication information of the mobility management network element; the packet data gateway 3 is configured to associate with the mobility management network element 1 according to the notification message.
  • User context information is set to invalid or deleted.
  • the packet data gateway 3 is configured to learn that the service gateway 2 is reset, and send the device-level identification information of the mobility management network element 1 to the serving gateway 2; the service gateway 2 And configured to locate the corresponding mobility management network element 1 according to the device level identification information, and restore the user bearer context information.
  • the reset information is notified to the remaining network elements for corresponding processing, and the original bearer connection is deleted.
  • Business service quality Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for making a A computer device (which may be a personal computer, server, or network device, etc.) performs the methods described in various embodiments of the present invention.

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Description

设备复位通知方法及系统、服务及分组数据网关和移动管理网元 本申请要求于 2008 年 3 月 26 日提交中国专利局, 申请号为 200810086368.9, 发明名称为 "设备复位通知方法及系统、 服务及分 组数据网关和移动管理网元"的中国专利申请的优先权, 其全部内容 通过引用结合在本申请中。 技术领域
本发明实施例涉及通信技术领域,尤其涉及一种设备复位通知方 法及系统、 服务及分组数据网关和移动管理网元。 背景技术
在现有的通用无线分组业务系统( General Packet Radio Service , GPRS ) I通用移动通信系统 ( Universal Mobile Telecommunications System, UMTS )中, 当 GPRS支持节点网关( Gateway GPRS Support Node, GGSN )发生故障而复位后, GGSN上存储的所有用户的分组 数据网络连接 ( Packet Data Protocol Context , PDP上下文) 均被破 坏清除, 因此无法提供正常的业务服务。 现有解决方法是若无线网络 控制器(Radio Network Control, RNC )收到发生故障的 GGSN发来 的 "GTP error indication" 消息, 则 RNC发起无线接入承载(Radio Access Bearer, RAB )释放进程, 并携带 "GPRS隧道协议(GPRS Tunnelling Protocol , GTP ) 资源不可用" 原因值, 不等待 GPRS服 务支持结点 ( Serving GPRS Support Node , SGSN ) 的响应便立即释 放本地 RAB;如果 SGSN收到 GGSN的 "GTP Error Indication"消息, 或收到来自 RNC的 RAB释放请求消息, 该请求消息中携带 "GTP 资源不可用" 原因值, 指示 GGSN上的 PDP上下文不存在, SGSN 将相关的 PDP上下文设置为无效, 并向用户发送去激活 PDP上下文 请求 "Deactivate PDP Context Request" 消息, 并携带重新激活请求 的原因值 "re-activation required"。
发明人在实现本发明的过程中发现:在现在的 GPRS/UMTS系统 中, SGSN发生故障复位后, SGSN所有用户 PDP上下文均被破坏清 除。 GGSN/SGSN因故障而发生复位后, GGSN/SGSN并不主动触发 通知用户重建 PDP上下文或发起重新附着流程, 例如当 IP电话被叫 时不能够及时接入等, 业务服务延时较长, 影响业务服务的质量。 在 现有的 E-UTRAN 演进网络架构中, 由于移动管理网元 (Mobility Management Entity, MME)和分组数据网络网关( Packet Data Network Gateway, P-GW )之间没有接口, 因此 MME或 P-GW发生复位后对 方都无法直接获知。 现有网络系统中, P-GW、 MME及 S-GW中一 个网元发生复位后, 其它网元不能及时获知复位信息, 造成业务服务 质量下降或网元工作异常等缺陷。 发明内容
本发明实施例提供一种设备复位通知方法及系统、服务及分组数 据网关和移动管理网元, 实现在一网元复位后, 其它网元将与之相关 的用户上下文信息设备为无效或删除,并通过重建承载连接等方法恢 复用户上下文, 及时恢复业务服务, 提高业务服务质量。
本发明实施例提供一种设备复位通知方法,包括第二网元获知第 一网元发生复位, 向第三网元发送通知消息; 所述第三网元根据所述 通知消息将与所述第一网元相关的用户上下文信息设置成无效或删 除。
本发明实施例还提供一种设备复位通知方法,包括分组数据网关 获知服务网关发生复位,向所述服务网关发送移动管理网元的设备级 标识信息,所述服务网关根据所述设备级标识信息定位对应的移动管 理网元, 恢复用户承载上下文信息。
本发明实施例提供一种移动管理网元, 包括:
第一接收模块, 用于在分组数据网关发生复位后,接收服务网关 发送的通知消息;
第一处理模块,用于根据所述通知消息将与发生复位的分组数据 网关相关的用户承载上下文信息设置成无效或删除。
本发明实施例提供一种服务网关, 包括:
获知模块, 用于获知第一网元的复位信息;
通知模块,用于向第三网元发送所述第一网元发生复位的通知消 息。
本发明实施例提供另一种服务网关, 包括:
第二接收模块, 用于在所述服务网关发生复位后,接收分组数据 网关发送的移动管理网元的设备级标识信息;
恢复模块,用于根据所述设备级标识信息定位对应的移动管理网 元, 恢复用户承载上下文信息。
本发明实施例提供一种分组数据网关, 包括:
第三接收模块, 用于在移动管理网元发生复位后,接收服务网关 发送的通知消息,所述通知消息包括所述移动管理网元的设备级标识 信息和复位指示信息;
第三处理模块,用于根据所述通知消息将与发生复位的所述移动 管理网元相关的用户上下文信息设置成无效或删除。
本发明实施例提供一种设备复位通知系统, 包括移动管理网元、 服务网关和分组数据网关;其中所述服务网关用于获知所述分组数据 网关复位, 向所述移动管理网元发送通知消息; 所述移动管理网元用 于根据所述通知消息,将与所述分组数据网关相关的用户上下文信息 设置成无效或删除。
本发明实施例提供另一种设备复位通知系统, 包括移动管理网 元、服务网关和分组数据网关; 所述服务网关用于获知所述移动管理 网元发生复位, 向所述分组数据网关发送通知消息, 所述通知消息包 括所述移动管理网元的设备级标识信息和复位指示信息;所述分组数 据网关用于根据所述通知消息将与所述移动管理网元相关的用户上 下文信息设置成无效或删除。 本发明实施例提供再一种设备复位通知系统, 包括移动管理网 元、服务网关和分组数据网关; 所述分组数据网关用于获知所述服务 网关发生复位, 向所述服务网关发送移动管理网元的设备级标识信 息;所述服务网关用于根据所述设备级标识信息定位对应的移动管理 网元, 恢复用户承载上下文信息。
本发明实施例提供的设备复位通知方法及系统、 移动管理网元、 服务网关和分组数据网关, 当网络中的其中一个网元发生复位时,要 将复位信息告知其余网元进行相应的处理, 删除原有承载连接, 通过 重建公共数据网连接或重新附着等流程 ,恢复发生复位的网元的用户 上下文信息, 保证业务服务质量。 附图说明
图 1为本发明分组数据网关复位处理方法实施例一信令流程图; 图 2为本发明分组数据网关复位处理方法实施例二信令流程图; 图 3为本发明分组数据网关复位处理方法实施例三信令流程图; 图 4为本发明分组数据网关复位处理方法实施例四信令流程图; 图 5为本发明分组数据网关复位处理方法实施例五信令流程图; 图 6为本发明分组数据网关复位处理方法实施例六信令流程图; 图 7为本发明移动管理网元复位处理方法实施例一信令流程图; 图 8为本发明移动管理网元复位处理方法实施例二信令流程图; 图 9为本发明附着流程实施例信令流程图;
图 10为本发明 UE发起 PDN连接流程实施例信令流程图; 图 11为本发明 TAU流程实施例信令流程图;
图 12为本发明切换流程实施例信令流程图;
图 13为本发明服务网关复位处理方法实施例一信令流程图; 图 14为本发明服务网关复位处理方法实施例二信令流程图; 图 15为本发明移动管理网元实施例结构示意图;
图 16为本发明服务网关实施例一结构示意图;
图 17为本发明服务网关实施例二结构示意图; 图 18为本发明分组数据网关实施例结构示意图; 图 19为本发明设备复位通知系统实施例结构示意图;
图 20为本发明设备复位通知系统另一实施例结构示意图。 具体实施方式
下面结合附图和具体实施例进一步说明本发明实施例的技术方 案。
3GPP为了增强未来网络的竟争能力, 推出一种新的演进网络包 括: 演进的通用移动通信系统 ( Universal Mobile Telecommunications System, UMTS ) 陆地无线接入网 (evolved UMTS Territorial Radio Access Network, E-UTRAN ), 用于实现所有与演进网络无线有关的 功能; MME负责控制面的移动性管理, 包括用户上下文和移动状态 管理, 分配用户临时身份标识等; S-GW是 3GPP接入网络间的用户 面锚点 ,终止 E-TURAN的接口; P-GW是 3GPP接入网络和非 3GPP 接入网络之间的用户面锚点, 终止和外部分组数据网 ( Packet Data Network , PDN ) 的接口。 策略和计费规则功能实体 ( Policy and Charging Rule Function , PCRF )用于策略控制决定和流计费控制功 能; 归属网络服务器(Home Subscriber Server, HSS )用于存储用户 签约信息; UMTS陆地无线接入网 (UMTS Terrestrial Radio Access Network , UTRAN )GSM/EDGE无线接入网( GSM/EDGE Radio Access Network, GERAN ), 用于实现所有与现有 GPRS/UMTS网络中无线 有关的功能; 服务通用分组无线业务支持节点 ( Serving GPRS Supporting Node, SGSN )用于实现 GPRS/UMTS网络中路由转发、 移动性管理、 会话管理以及用户信息存储等功能; 非 3GPP IP接入网 络( Non-3GPP IP Access )主要是一些非 3GPP组织定义的接入网络, 如无线局域网 ( Wireless Local Area Network, WLAN ), 微波存取全 球互通 ( Worldwide Interoperability for Microwave Access , Wimax ), 码分多址接入 ( Code Division Multiple Access, CDMA )等网络; 认 证、 4受权与计费月良务器 ( Authentication, Authorization and Accounting Server , AAA Server )用于对用户终端 (以下简称: UE )执行接入 认证、 授权和计费功能。
在上述的 E-UTRAN网络中, 当某个网元因故障而发生复位 后, 其存储的用户上下文信息将全部被删除, 将影响正常的业务服务 过程, 应将该网元发生复位的信息及时通知其它网元, 即第一网元发 生复位后, 第二网元向第三网元发送通知消息, 所述第三网元根据所 述通知消息将与所述第一网元相关的用户上下文信息设置成无效或 删除, 使得其它网元能够及时对设备复位引起的异常进行处理, 例如 与用户终端重新建立 PDN连接或指示用户终端重新进行网络附着, 以恢复用户上下文信息, 确保业务服务的正常进行, 提高业务服务质 量。
具体地, 当分组数据网关发生复位时, S-GW向移动管理网元发 送通知消息,所述移动管理网元删除与发生复位的分组数据网关相关 的用户承载上下文信息; 其中分组数据网关包括 P-GW或 GGSN, 所 述移动管理网元包括 MME或 SGSN。 S-GW通过主动检测或接收到 P-GW的错误指示消息等方法获知 P-GW发生复位后, 要向 MME发 送通知消息,用于告知 MME网络中的该 P-GW已经因故障发生复位 了, MME再得知该消息后, 要删除与发生复位的 P-GW相关的用户 承载上下文信息; 还可以指示终端进行重建 PDN连接或重新进行附 着, 使用户能够及时享用新的业务。
在上述的当 P-GW发生复位时, MME可以被动或主动地进行承 载删除的步骤, 具体地 MME被动进行承载删除的过程为: S-GW向 MME发送的通知消息具体可以是删除承载请求消息, 所述删除承载 请求消息包括 S-GW的复位指示信息,该信息用于指示 P-GW已经发 生复位, 具体可以为复位指示标识或原因值; MME接收到所述删除 承载请求消息后, 向 S-GW返回删除承载响应信息, 并删除与发生复 位的 P-GW相关的用户承载上下文信息。 MME主动进行承载删除的 过程为: S-GW向 MME发送指示消息, 所述指示消息包括所述分组 数据网关的复位指示信息和所述分组数据网关的设备级标识信息;
MME根据所述指示信息主动发起承载删除流程, 并删除与发生复位 的分组数据网关相关的用户承载上下文信息。
图 1为本发明分组数据网关复位处理方法实施例一信令流程图, 如图 1所示, 包括如下步骤:
步骤 la、 S-GW通过检测获知 P-GW复位后, S-GW把与该 P-GW 相关的用户承载上下文设置为无效或删除, S-GW会向所有相关用户 发起承载去激活流程;
步骤 2a、 S-GW向 MME/SGSN发送删除承载请求消息, 该消息 携带有用于指示 P-GW复位的标识或原因值; MME收到该消息, 把 该用户的承载上下文设置为无效或删除;
步骤 3a、 MME/SGSN立即向 S-GW返回删除承载响应消息; 步骤 4a、 MME/SGSN向无线接入网元 eNodeB/RNC发送承载去 激活消息, 由于 MME/SGSN知道 P-GW复位的信息, 消息会携带重 建 PDN连接标识或原因值给用户终端 UE;
步骤 5a、 eNodeB/RNC向 UE发送承载释放请求消息, 携带重建 PDN连接标识或原因值;
步骤 6a、 UE返回承载释放响应消息;
步骤 7a、 eNodeB/RNC返回去激活响应消息;
步骤 8a、 当 UE要重建 PDN连接时, 则继续执行 UE根据所述 重建 PDN连接标识进行 PDN连接或根据所述复位指示信息即原因值 选择性地发起 PDN连接。
图 2为本发明分组数据网关复位处理方法实施例二信令流程图, 如图 2所示, 包括如下步骤:
步骤 lb、 S-GW通过检测获知 P-GW复位后, S-GW把与该 P-GW 相关的所有用户承载上下文设置为无效或删除, S-GW会向所有相关 用户发起承载去激活流程;
步骤 2b、 S-GW向 MME/SGSN发送删除承载请求消息, 并携带 用于指示 P-GW复位的标识或原因值信息; MME知道 P-GW复位, 可发起显示 "Detach" 流程;
步骤 3b、 MME/SGSN可立即向 S-GW返回删除承载响应消息; 步骤 4b、 MME/SGSN向 UE发送分离请求 "Detach Request" 信 息,所述分离请求信息包括用于指示用户重新附着的重新附着标识或 所述复位指示信息;
步骤 5b、 UE返回分离接受 "Detach Accept" 消息;
步骤 6b、 当 UE要进行重新附着时, 则继续执行 UE根据所述重 新附着标识进行重新附着或根据所述复位指示信息选择性地进行重 新附着。
图 3为本发明分组数据网关复位处理方法实施例三信令流程图, 如图 3所示, 包括如下步骤:
步骤 lc、 S-GW通过检测获知 P-GW复位后, S-GW把该 P-GW 相关的用户承载上下文设置为无效或删除, S-GW会向所有相关用户 发起承载去激活流程;
步骤 2c、 S-GW向 MME发送指示消息,所述指示消息包括 P-GW 的复位指示信息和 P-GW的设备级标识信息;
步骤 3c、 MME主动向 S-GW发送删除承载请求消息, 该消息携 带有用于指示 P-GW复位的标识或原因值; MME收到该消息, 把该 用户的承载上下文设置为无效或删除;
步骤 4c、 S-GW向 MME返回删除承载响应消息;
步骤 5c、 MME向无线接入网元 eNodeB/RNC发送去激活承载请 求, 携带重建 PDN连接标识或复位指示信息;
步骤 6c、 eNodeB/RNC向用户终端 UE发送承载释放请求, 携带 重建 PDN连接标识或复位指示信息;
步骤 7c、 UE向 eNodeB/RNC返回承载释放响应;
步骤 8c、 eNodeB/RNC向 MME返回去激活承载响应; 步骤 9c、 当 UE要重建 PDN连接时, 则继续执行 UE根据所述 重建 PDN连接标识进行 PDN连接,或根据复位指示信息选择性地发 起 PDN连接。 上述流程中步骤 3c与步骤 5C可以是同时进行的, 当然步骤 4c 与步骤 6c、 7c、 8c和 9c之间并无特定的时间先后关系。
图 4为本发明分组数据网关复位处理方法实施例四信令流程图, 如图 4所示, 包括如下步骤:
步骤 ld、 S-GW通过检测获知 P-GW复位;
步骤 2d、 S-GW向相关的 MME/SGSN发送指示消息, 并用于携 带指示 P-GW复位的标识或原因值; MME/SGSN收到指示消息后, 知道 P-GW复位, 就触发 P-GW相关的用户发起显示分离 ( Detach ) 流程;
步骤 3d、 MME/SGSN向 UE发送分离请求 "Detach Request" 信 息,所述分离请求信息包括用于指示用户重新附着的重新附着标识或 复位指示信息;
步骤 4d、 UE返回分离接受 "Detach Accept" 消息;
步骤 5d、 MME/SGSN向 S-GW发起承载删除请求;
步骤 6d、 S-GW返回承载删除响应消息;
步骤 7d、 当 UE要进行重新附着时, 则继续执行 UE根据重新附 着标识进行重新附着或根据复位指示信息选择性地进行重新附着。
上述流程中步骤 3d与步骤 5d是同时进行的, 当然步骤 4d与步 骤 6d之间并无特定的时间先后关系;
以上实施例是 P-GW发生复位后, S-GW通过检测获知 P-GW的 复位信息,还可以是通过具体的事件进行触发而获知 P-GW的复位信 息, 例如 S-GW发送上行数据到 P-GW, P-GW因复位而返回错误指 示消息, 所述错误指示消息包括所述 P-GW的复位指示信息。
图 5为本发明分组数据网关复位处理方法实施例五信令流程图, 如图 5所示, 包括如下步骤:
步骤 le、 上行数据发送到 P-GW, P-GW检测到由于 P-GW复位 而导致没有相关上下文;
步骤 2e、 P-GW向 S-GW发送错误指示 "Error Indication" 消息, 携带用于指示 P-GW复位的标识或原因值; S-GW将相关的用户承载 上下文设置为无效或删除;
步骤 3e、 S-GW向 MME/SGSN发送删除承载请求消息, 该消息 携带有用于指示 P-GW复位的标识或原因值; MME收到该消息, 把 该用户的承载上下文设置为无效或删除;
步骤 4e、 MME/SGSN立即向 S-GW返回删除承载响应消息; 步骤 5e、 MME/SGSN向无线接入网元 eNodeB/RNC发送承载去 激活消息, 由于 MME/SGSN知道 P-GW复位的信息, 消息会携带重 建 PDN连接标识或原因值给用户终端 UE;
步骤 6e、 eNodeB/RNC向 UE发送承载释放请求消息, 携带重建 PDN连接标识或原因值;
步骤 7e、 UE返回承载释放响应消息;
步骤 8e、 eNodeB/RNC返回去激活响应消息;
步骤 9e、 当 UE要进行 PDN连接时, 则继续执行 UE根据所述 重建 PDN连接标识进行 PDN连接或根据复位指示信息选择性地发起 PDN连接。
图 6为本发明分组数据网关复位处理方法实施例六信令流程图, 如图 6所示, 包括如下步骤:
步骤 lf、 上行数据发送到 P-GW, P-GW检测到由于 P-GW复位 而导致没有相关上下文;
步骤 2f、 P-GW向 S-GW发送错误指示 "Error Indication" 消息, 携带用于指示 P-GW复位的标识或原因值; S-GW将相关的用户承载 上下文设置为无效或删除;
步骤 3f、 S-GW向 MME发送删除承载请求消息, 并携带用于指 示 P-GW复位的标识或原因值信息; MME知道 P-GW复位, 可发起 显示 Detach流程;
步骤 4f、 MME可立即向 S-GW返回删除承载响应消息; 步骤 5f、 MME向 UE发送分离请求 "Detach Request" 信息, 所 述分离请求信息包括用于指示用户重新附着的重新附着标识或复位 指示信息 步骤 6f、 UE返回分离接受 "Detach Accept" 消息; 步骤 7f、 当 UE要进行重新附着时, 则继续执行 UE根据所述重 新附着标识进行重新附着或根据所述复位指示信息选择性地进行重 新附着。
上述各实施例均为分组数据网关发生复位后的处理方法实施例, 服务网关通过检测获知或通过具体的网络事件获知分组数据网关的 复位信息后,通过请求移动管理网元删除原先建立的承载或向移动管 理网元发送指示信息, 由移动管理网元主动进行原有承载的删除流 程; 然后再由网络侧主动告知用户终端重建 PDN连接或重新附着, 重建承载上下文及时恢复业务服务。
在 E-UTRAN网络中, 当 MME发生复位时 , S-GW向 P-GW发 送通知消息, 所述通知消息包括 MME的设备级标识信息和复位指示 信息, P-GW将与 MME相关的用户上下文信息设置成无效或删除; MME复位后主动向 S-GW告知其复位信息或 S-GW通过检测获知 MME发生复位, S-GW向 P-GW发送通知消息, 在该消息中不但携 带有 MME的复位指示信息, 还携带有发生复位的 MME的设备级标 识信息, P-GW再获知根据接收到的通知消息后, 将与其中携带的设 备级标识所对应的 MME相关的用户上下文信息设置成无效,或删除 该用户上下文信息;在后续的重建承载连接的时候更新用户上下文信 息,保证业服务的顺利进行, 同时避免 S-GW和 P-GW之间出现信令 风暴, 导致 S-GW工作异常。
图 7为本发明移动管理网元复位处理方法实施例一信令流程图, 如图 7所示, 包括如下步骤:
步骤 lg、 MME/SGSN发消息给 S-GW指示设备复位, 或 S-GW 检测到 MME/SGSN设备复位;
步骤 2g、 S-GW 向 P-GW 发送设备级的指示消息, 携带 MME/SGSN设备级标识(例如 MME/SGSN的 IP地址 )和设备复位 标识;将与 MME/SGSN设备相关的用户上下文信息设置无效或删除; 步骤 3g、 P-GW收到所述指示消息后, 将与 MME/SGSN设备相 关的用户上下文信息设置无效或删除。
图 8为本发明移动管理网元复位处理方法实施例二信令流程图, 如图 8所示, 包括如下步骤:
步骤 lh、 MME复位后, 收到 S-GW发送的下行数据包; 步骤 2h、 MME向 S-GW返回错误指示 "Error Indication" 消息, 并携带 MME复位的信息;
步骤 3h、 S-GW向 P-GW发送指示消息, 携带 MME的设备级标 识(例如 MME的 IP地址 )和设备复位标识等; 将与 MME设备相关 的用户上下文信息设置成无效或删除;
步骤 4h、 P-GW收到消息后, 将与 MME设备相关的用户上下文 信息设置成无效或删除。
上述实施例是当网络中移动管理网元发生复位后的处理方法,在 方法中移动管理网元的复位信息可以是主动告知或服务网元通过检 测获知, 也可以是由网络事件触发, 服务网元通过移动管理网元发送 的错误信息获知; 并且在后续的处理过程中, 服务网元将发生复位的 移动管理网元的设备级标识信息告知分组数据网关,服务网元和分组 数据网关将与该移动管理网元相关的用户上下文信息设置成无效或 直接删除。
由上述实施例可知, 当用户注册或用户所在移动管理网元发生变 信息, 这样才能够保证当移动管理网元发生复位时, 分组数据网关所 接收到的移动管理网元的设备级标识信息与存储的信息相对应,并保 证用户上下文信息删除的准确性。因此要对现有的流程进行适应性修 改, 使得当移动管理网元发生变化时, 分组数据网关及时更新移动管 理网元的设备级标识。 针对现有流程的修改分别介绍如下:
图 9为本发明附着流程实施例信令流程图, 如图 9所示, 其中步 骤 1、 2为用户发起附着请求消息; 步骤 3、 4为用户标识请求过程; 步骤 5为用户和设备合法性鉴权过程;步骤 6为删除承载上下文过程; 步骤 7-11为位置更新和插入签约数据过程;步骤 12-22为缺省承载建 立过程; 步骤 23、 24为更新 APN和 PGW信息过程。
其中步骤 12 中 MME 向 S-GW发送创建缺省承载请求消息 "Create Default Bearer Request" 时, 在所述创建缺省承载请求消息 中包括所述移动管理网元的设备级标识信息, 设备级标识可以为 "IP Addr" , "MME ID" ,其他设备级的标识或标识组合等;步骤 13中 S-GW 向 P-GW发送创建缺省承载请求 "Create Default Bearer Request" 消 息, 携带所述的 ΜΜΕ设备级标识, P-GW保存所述的 ΜΜΕ设备级 标识。
图 10为本发明 UE发起 PDN连接流程实施例信令流程图, 如图 10所示, 其中步骤 1为用户向 ΜΜΕ发起 PDN连接请求消息, 步骤 2-12为缺省承载建立流程, 步骤 13、 14为更新 ΑΡΝ和 PGW信息过 程。其中步骤 2中 ΜΜΕ向 S-GW发送创建缺省承载请求消息 "Create Default Bearer Request" 时, 在所述创建缺省承载请求消息中包括所 述移动管理网元的设备级标识信息, 设备级标识可以为 "IP Addr" ,
"MME ID" , 其他设备级的标识或标识组合等; 步骤 3中 S-GW向 P-GW发送创建缺省承载请求 "Create Default Bearer Request" 消息, 携带所述的 MME设备级标识, P-GW保存所述的 MME设备级标识。
图 11为本发明 TAU流程实施例信令流程图, 如图 11所示, 在 跟踪区域更新流程( TAU流程 ) 中, 步骤 1-3为用户发起 TAU请求 消息; 步骤 4、 5、 7为用户上下文请求消息; 步骤 6为用户鉴权过程; 步骤 8-11为承载更新过程;步骤 12-16为位置更新和插入签约数据过 程; 步骤 12-16为缺省承载建立过程; 步骤 19、 20为 TAU接受完成 消息。
其中步骤 8当 MME发生变化时,若 S-GW也发生变化,则 MME 向 S-GW发送 "Create Bearer Request" 消息, 若 S-GW不变则 MME 向 S-GW发送 "Update Bearer Request" 消息, 在上述两消息中均携 带 MME的设备级标识,设备级标识可以为 "IP Addr" , "MME ID" , 其他设备级的标识或标识组合等;步骤 9中不论 S-GW是否发生变化, 只要 MME发生变化, S-GW就需要向 P-GW发送 "Update Bearer Request" 消息, 并携带 MME的设备级标识, 更新 P-GW中的 MME 设备级标识。 应该说明的是其它情况的 TAU或路由区域更新(Route Area Update ;简称: RAU )出现 MME/SGSN发生变化(包括 EUTRAN 内部以及 EUTRAN和 UTRAN之间的 TAU/RAU流程等), 都做类似 处理, 此处不再赘述。
图 12为本发明切换流程实施例信令流程图, 如图 12所示, 在切 换(Handover ) 流程中, 步骤 1-10为 HO的准备过程; 步骤 12-17 为 HO的执行过程; 步骤 18-27为 TAU过程。 其中在步骤 15 中当 MME发生变化时, MME向 S-GW发送的 "Update Bearer Request" 消息, 并携带 MME的设备级标识, 如果设备级标识为 "IPAddr" 的 话, 由于在该消息中就携带有 "IPAddr" 给 S-GW, 因此可以不作修 改; 在步骤 16中不论 S-GW是否发生变化, 只要 MME发生变化, S-GW就需要向 P-GW发送 "Update Bearer Request"消息,携带 MME 设备级标识, 更新 P-GW中的 MME设备级标识。 值得说明的是其它 情况的切换流程中出现 MME/SGSN发生变化(包括 EUTRAN内部 以及 EUTRAN和 UTRAN/GERAN之间的切换流程等 ) , 都做类似处 理, 此处不再赘述。
在上述的对现有流程进行修改后, P-GW均要存储 MME的设备 级标识。
在 E-UTRAN网络中当 S-GW发生复位时, P-GW向 S-GW发 送 MME的设备级标识信息, S-GW根据所述设备级标识信息与所述 P-GW重新建立承载。 P-GW通过检测获知 S-GW发生复位后, 由于 S-GW中的上下文信息已经丟失, 此时 P-GW将对应的 MME的设备 级标识信息发送给发生复位的 S-GW,重新建立承载,从而恢复 S-GW 上下文信息。
图 13为本发明服务网关复位处理方法实施例一信令流程图, 如 图 13所示, 包括如下步骤:
步骤 li、 P-GW通过检测获知 S-GW复位;
步骤 2 i、 P-GW向 S-GW发送创建承载请求消息, 并携带 MME 的设备级标识, 例如 "IPAddr" ;
步骤 3 i、 S-GW根据 MME的设备级的标识如 IP地址 ,向该 MME 发送创建承载请求消息;
步骤 4 i、 MME与无线接入网元 eNodeB/RNC创建承载消息; 步骤 5 i、无线接入网元 eNodeB/RNC与用户终端创建承载消息; 步骤 6 i、 MM向 S-GW发送创建承载相应消息;
步骤 7 i、 S-GW向 P-GW发送创建承载相应消息。
经过步骤 2 i、 3 i 、 6 i和 7 i的交互承载信息, 恢复 S-GW上的 承载上下文信息。 当仅为了恢复 S-GW的承载上下文时, 可以不执行 步骤 4i与步骤 5i。
P-GW获知 S-GW 复位后, 发起承载建立流程, 进而可以恢复
S-GW中的上下文信息, 如缺省承载信息; P-GW将 MME的设备级 标识, 如 IP Addr告知 S-GW, S-GW 收到消息后就可以直接找到
MME, 并向对应的 MME发起 7 载建立消息。
图 14为本发明服务网关复位处理方法实施例二信令流程图, 如 图 14所示, 包括如下步骤:
步骤 lj、 S-GW接收下行数据;
步骤 2 j、 S-GW因发生复位其上无相关上下文信息,因此向 P-GW 返回错误指示 "Error Indication" 消息;
步骤 3 j、 P-GW向 S-GW发送创建承载请求消息, 并携带 MME 的设备级标识, 例如 "IPAddr" ;
步骤 4 j、 S-GW向 MME发送创建承载请求消息, 并携带 MME 的设备级标识, 例如 "IPAddr" ;
步骤 5 j、 MME与无线接入网元 eNodeB/RNC创建承载消息; 步骤 6 j、无线接入网元 eNodeB/RNC与用户终端创建承载消息; 步骤 7 j、 MM向 S-GW发送创建承载相应消息;
步骤 8 j、 S-GW向 P-GW发送创建承载相应消息。
经过步骤 3 j、 4 j、 6 j和 7 j的交互承载信息, 恢复 S-GW上的承 载上下文信息。 当仅为了恢复 S-GW的承载上下文时, 可以不执行步 骤 5j与步骤 6j是可选步骤。
本实施例与上个实施例不同之处在于, P-GW获知 S-GW复位信 息是通过网络事件, 并由此触发创建承载请求消息。
本发明实施例提供的设备复位通知方法中, 当网络中的移动管理 网元、服务网关和分组数据网关其中之一发生复位时, 要将复位信息 告知其余网元进行相应的处理, 删除原有承载连接, 通过重建公共数 据网连接或重新附着等流程, 恢复发生复位的网元的用户上下文信 息, 保证业务服务质量。
本领域普通技术人员可以理解: 实现上述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 15为本发明移动管理网元实施例结构示意图, 如图 15所示, 该移动管理网元包括第一接收模块 11和第一处理模块 12, 其中第一 接收模块 11用于当分组数据网关发生复位时, 接收服务网关发送的 通知消息; 第一处理模块 12用于根据所述通知消息发生复位的分组 数据网关相关的用户承载上下文信息设置成无效或删除。
具体地, 当 E-UTRAN网络中的 P-GW发生故障而复位时, 第一 接收模块 11接收 S-GW发送的通知消息, MME得知该 P-GW已经 发生复位, 不能进行正常的业务服务, 要进行必要的处理以恢复复位 网元的用户上下文信息, 具体为第一接收模块 11 包括第一接收子模 块 111和 /或第二接收子模块 112, 其中第一接收子模块 111用于当 P-GW发生复位时, 接收 S-GW发送的删除承载请求消息, 所述删除 承载请求消息包括所述分组数据网关的复位指示信息;第二接收子模 块 112用于当 P-GW发生复位时,接收 S-GW发送的指示消息, 所述 指示消息包括 P-GW的复位指示信息和 P-GW的设备级标识信息。第 一接收子模块 111接收到 S-GW发送的删除承载请求消息后,被动进 行承载的删除流程, 承载删除后可选地进行用户终端的重建 PDN连 接流程或用户终端重新附着流程, 重建承载恢复用户上下文信息, 继 续新的业务; 第二接收子模块 112接收到 S-GW发送的指示消息, MME主动发起承载删除流程, 承载删除后可选地进行用户终端的重 建 PDN连接流程或用户终端重新附着流程, 重建承载恢复用户上下 文信息, 继续新的业务。 进一步地, MME还包括第一发送模块 13 用于当本设备发生复位时, 向 S-GW发送复位指示消息, S-GW根据 该消息进行后续处理流程。
本实施例提供的移动管理网元, 能够在分组数据网关发生复位 时, 根据接收到的服务网关发送的不同消息, 进行被动或主动地承载 删除流程 ,删除与发生复位的分组数据网关相关的用户承载上下文信 息, 再可选地进行用户终端的重建 PDN连接或重新附着流程, 恢复 发生复位的分组数据网关的用户上下文信息, 保证业务服务质量。
图 16为本发明服务网关实施例一结构示意图, 如图 16所示, 该 服务网关包括获知模块 21和通知模块 22, 其中获知模块 21用于获 知第一网元的复位信息; 通知模块 22用于在获知第一网元的复位信 息后, 向第三网元发送所述第一网元发生复位的通知消息。 具体地, 在获知模块 21通过主动检测或接收复位指示消息等方式获知第一网 元发生复位后, 通过通知模块 22将第一网元发生复位的消息告知第 三网元, 第三网元作相应处理。 所述的第一网元和第三网元可以分别 为移动管理实体或分组数据网关。 通知模块 22中包括第二发送模块 221和 /或第三发送模块 222分别对分组数据网关和移动管理网元发生 复位进行处理,其中第二发送模块 221用于在获知分组数据网关发生 复位后, 向移动管理网元发送所述通知消息; 第三发送模块 222用于 在获知移动管理网元发生复位后, 向分组数据网关发送通知消息, 所 述通知消息包括所述移动管理网元的设备级标识信息和复位指示信 息。
进一步地, 第二发送模块 221包括第一发送子模块 2211和 /或第 二发送子模块 2212 , 其中第一发送子模块 2211用于向移动管理网元 发送删除承载请求消息,所述删除承载请求消息包括所述分组数据网 关的复位指示信息; 指示移动管理网元进行承载删除流程; 第二发送 子模块 2212用于向移动管理网元发送通知消息, 所述通知消息包括 分组数据网关的复位指示信息和设备级标识信息;移动管理网元根据 通知消息的指示主动进行承载删除流程。该服务网关还包括第二处理 模块 23用于在所述分组数据网关或移动管理网元发生复位后, 根据 所述通知消息将相关的用户上下文设置成无效或删除。
本实施例提供的服务网关,在分组数据网关或移动管理网元发生 复位时, 分别向移动管理网元或分组数据网关发送复位通知消息, 并 将自身所存储的相关的用户上下文信息设置成无效或删除,并通过后 续的重建承载恢复用户上下文。
图 17为本发明服务网关实施例二结构示意图, 如图 17所示, 该 服务网关包括第二接收模块 24和恢复模块 25 ,其中第二接收模块 24 用于在所述服务网关发生复位后,接收分组数据网关发送的移动管理 网元的设备级标识信息; 恢复模块 25用于根据所述设备级标识信息 定位对应的移动管理网元, 恢复用户承载上下文信息。
当服务网关本身发生复位后,分组数据网关向服务网关发送移动 管理网元的设备级标识, 第二接收模块 24接收到该标识后, 通过恢 复模块 25与该标识对应的移动管理网元重建承载恢复用户承载上下 文信息。
本实施例提供的服务网关, 在服务网关本身发生复位后, 根据接 理网元并与之重建承载恢复用户上下文信息。
图 18为本发明分组数据网关实施例结构示意图, 如图 18所示, 该分组数据网关包括第三接收模块 31和第三处理模块 32 , 其中第三 接收模块 31用于当移动管理网元发生复位时, 接收服务网关发送的 通知消息,所述通知消息包括所述移动管理网元的设备级标识信息和 复位指示信息; 第三处理模块 32用于根据所述通知消息将与发生复 位的所述移动管理网元相关的用户上下文信息设置成无效或删除;具 体地, 当移动管理网元发生复位时, 移动管理网元将复位通知信息告 知服务网关, 第三接收模块 31接收到该复位通知信息后, 由第三处 理模块 32将与发生复位的移动管理网元相关的用户上下文信息设置 成无效或删除, 并通过后续的承载重建流程恢复用户上下文。
该分组数据网关还包括第四发送模块 33用于当服务网关发生复 位时, 向所述服务网关发送移动管理网元的设备级标识信息。 若服务 网关发生复位, 则通过第四发送模块 33将移动管理网元的设备级标 识信息发送给该服务网关,使得服务网关能够根据该设备级标识信息 找到对应的移动管理网元发起承载建立消息。
本实施例提供的分组数据网关能够在移动管理网元发生复位后, 根据服务网关发送的通知消息, 进行相关用户上下文的处理; 服务网 关发生复位后, 根据接收到的移动管理网元的设备级标识重建承载, 保证不网络发生异常。
图 19为本发明设备复位通知系统实施例结构示意图,如图 19所 示, 该设备复位通知系统包括移动管理网元 1、 服务网关 2和分组数 据网关 3 , 其中服务网关 2用于获知分组数据网关 3复位, 向移动管 理网元 1发送通知消息; 移动管理网元 1用于根据所述通知消息, 将 与分组数据网关 3相关的用户上下文信息设置成无效或删除。
其中,服务网关 2向移动管理网元 1发送的通知消息分为两种情 况, 相应地服务网关 2 包括第一通知模块 26和 /或第二通知模块 27 用于发送两种通知消息, 具体为第一通知模块 26用于向所述移动管 理网元发送删除承载请求消息,所述删除承载请求消息包括所述分组 数据网关的复位指示信息; 第二通知模块 27用于向所述移动管理网 元发送通知消息,所述通知消息包括所述分组数据网关的复位指示信 息和所述分组数据网关的设备级标识信息。
图 20为本发明设备复位通知系统另一实施例结构示意图, 如图 20所示, 本发明另一个设备复位通知系统实施例中, 服务网关 2用 于获知移动管理网元 1发生复位, 向分组数据网关 3发送通知消息, 所述通知消息包括所述移动管理网元的设备级标识信息和复位指示 信息;分组数据网关 3用于才艮据所述通知消息将与移动管理网元 1相 关的用户上下文信息设置成无效或删除。
本发明再一个设备复位通知系统实施例中结构如图 20 所示, 分 组数据网关 3用于获知服务网关 2发生复位,向服务网关 2发送移动 管理网元 1的设备级标识信息;服务网关 2用于根据所述设备级标识 信息定位对应的移动管理网元 1 , 恢复用户承载上下文信息。
本实施提供的设备复位通知系统中, 当网络中的移动管理网元、 服务网关和分组数据网关其中之一发生复位时,要将复位信息告知其 余网元进行相应的处理, 删除原有承载连接, 通过重建公共数据网连 接或重新附着等流程, 恢复发生复位的网元的用户上下文信息, 保证 业务服务质量。 通过以上的实施方式的描述,本领域的技术人员可以清楚地了解 到本发明可借助软件加必需的通用硬件平台的方式来实现, 当然也可 以通过硬件,但很多情况下前者是更佳的实施方式。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的方法。
以上公开的仅为本发明的几个具体实施例, 但是, 本发明并非局 限于此,任何本领域的技术人员能思之的变化都应落入本发明的保护 范围。

Claims

权利要求
1、 一种设备复位通知方法, 其特征在于, 包括:
第二网元获知第一网元发生复位, 向第三网元发送通知消息; 所述第三网元根据所述通知消息将与所述第一网元相关的用户 上下文信息设置成无效或删除。
2、 根据权利要求 1所述的设备复位通知方法, 其特征在于所述 方法包括:
服务网关获知分组数据网关复位, 向移动管理网元发送通知消 息;
所述移动管理网元根据所述通知消息,将与所述分组数据网关相 关的用户上下文信息设置成无效或删除。
3、 根据权利要求 1所述的设备复位通知方法, 其特征在于所述 方法包括:
服务网关获知移动管理网元发生复位,向分组数据网关发送通知 消息,所述通知消息包括所述移动管理网元的设备级标识信息和复位 指示信息;
所述分组数据网关根据所述通知消息将与所述移动管理网元相 关的用户上下文信息设置成无效或删除。
4、 根据权利要求 2所述的设备复位通知方法, 其特征在于所述 方法包括:
所述服务网关获知分组数据网关复位,向所述移动管理网元发送 删除承载请求消息 ,所述删除承载请求消息包括所述分组数据网关的 复位指示信息;
所述移动管理网元返回删除承载响应信息,将与发生复位的分组 数据网关相关的用户承载上下文信息设置成无效或删除。
5、 根据权利要求 4所述的设备复位通知方法, 其特征在于方法 还包括:
所述移动管理网元向无线接入网元发送去激活承载请求信息,所 述去激活承载请求信息中包括重建分组数据网络连接标识或所述复 位指示信息;
所述无线接入网元向所述用户终端发送承载释放请求信息,所述 承载释放请求信息包括所述重建分组数据网络连接标识或所述复位 指示信息;
所述用户终端向所述无线接入网元返回承载释放响应信息; 所述无线接入网元向所述移动管理网元返回去激活承载响应信 息;
所述用户终端根据所述重建分组数据网络连接标识进行分组数 据网络连接或根据所述复位指示信息选择性地发起分组数据网连接。
6、 根据权利要求 4所述的设备复位通知方法, 其特征在于所述 方法还包括:
所述移动管理网元向所述用户终端发送分离请求信息,所述分离 请求信息包括重新附着标识或所述复位指示信息;
所述用户终端向所述移动管理网元返回分离请求响应信息; 所述用户终端根据所述重新附着标识进行重新附着或根据所述 复位指示信息选择性地进行重新附着。
7、 根据权利要求 2所述的设备复位通知方法, 其特征在于所述 方法包括:
所述服务网关获知分组数据网关复位,向所述移动管理网元发送 通知消息,所述通知消息包括所述分组数据网关的复位指示信息和所 述分组数据网关的设备级标识信息;
所述移动管理网元根据所述通知消息,将与发生复位的分组数据 网关相关的用户承载上下文信息设置成无效或删除。
8、 根据权利要求 7所述的设备复位通知方法, 其特征在于所述 方法还包括:
所述移动管理网元根据所述指示信息向所述服务网关发送删除 承载请求信息;
所述服务网关返回删除承载响应。
9、 根据权利要求 7所述的设备复位通知方法, 其特征在于所述 方法还包括:
所述移动管理网元向无线接入网元发送去激活承载请求信息,所 述去激活承载请求信息中包括重建分组数据网络连接标识或所述复 位指示信息;
所述无线接入网元向所述用户终端发送承载释放请求信息,所述 承载释放请求信息包括所述重建分组数据网络连接标识或所述复位 指示信息;
所述用户终端向所述无线接入网元返回承载释放响应信息; 所述无线接入网元向所述移动管理网元返回去激活承载响应信 息;
所述用户终端根据所述重建分组数据网络连接标识进行分组数 据网络连接或根据所述复位指示信息选择性地发起分组数据网连接。
10、根据权利要求 7所述的设备复位通知方法, 其特征在于所述 方法还包括:
所述移动管理网元向所述用户终端发送分离请求信息,所述分离 请求信息包括重新附着标识或所述复位指示信息;
所述用户终端向所述移动管理网元返回分离请求响应信息; 所述移动管理网元根据所述重新附着标识进行重新附着或根据 所述复位指示信息选择性地进行重新附着。
11、根据权利要求 2所述的设备复位通知方法, 其特征在于所述 服务网关获知所述分组数据网关发生复位包括:
所述服务网关通过检测获知所述分组数据网关发生复位; 或所述分组数据网关接收上行数据后,所述分组数据网关向所述 服务网关发送错误指示消息,所述错误指示消息包括所述分组数据网 关的复位指示信息。
12、根据权利要求 2或 3所述的设备复位通知方法, 其特征在于 还包括所述服务网关删除存储的与所述分组数据网关相关的用户上 下文信息。
13、根据权利要求 3所述的设备复位通知方法, 其特征在于所述 服务网关获知移动管理网元发生复位包括:
所述移动管理网元向所述服务网关发送复位指示消息; 或所述服务网关检测获知所述移动管理网元发生复位。
14、 根据权利要求 13所述的设备复位通知方法, 其特征在于所 述移动管理网元向所述服务网关发送复位指示消息包括:
所述移动管理网元向所述服务网关返回错误指示信息,所述错误 指示消息包括所述移动管理网元的复位指示信息。
15、根据权利要求 3所述的设备复位通知方法, 其特征在于所述 方法包括:
所述移动管理网元向所述服务网关发送创建缺省承载请求消息, 所述创建缺省承载请求消息包括所述移动管理网元的设备级标识信 息;
所述服务网关向所述分组数据网关发送所述创建缺省承载请求 消息,所述创建缺省承载请求消息包括所述移动管理网元的设备级标 识信息。
16、根据权利要求 3所述的设备复位通知方法, 其特征在于所述 方法还包括:
所述移动管理网元向所述服务网关发送创建承载请求消息或更 新承载请求消息,所述创建承载请求消息或更新承载请求消息包括所 述移动管理网元的设备级标识信息;
所述服务网关向所述分组数据网关发送所述更新承载请求消息, 所述创建缺省承载请求消息包括所述移动管理网元的设备级标识信 息。
17、根据权利要求 15或 16所述的设备复位通知方法, 其特征在 于还包括:
18、 一种设备复位通知方法, 其特征在于, 包括:
分组数据网关获知服务网关发生复位,向所述服务网关发送移动 管理网元的设备级标识信息;
所述服务网关根据所述设备级标识信息定位对应的移动管理网 元, 恢复所述服务网关的用户承载上下文信息。
19、 根据权利要求 18所述的设备复位通知方法, 其特征在于所 述分组数据网关获知服务网关发生复位包括:
所述服务网关收到下行数据后,向所述分组数据网关返回错误指 示消息, 所述错误指示消息包括所述服务网关的复位指示信息。
20、 根据权利要求 18所述的设备复位通知方法, 其特征在于所 述方法还包括:
所述移动管理网元向所述服务网关发送创建缺省承载请求消息, 所述创建缺省承载请求消息包括所述移动管理网元的设备级标识信 息;
所述服务网关向所述分组数据网关发送所述创建缺省承载请求 消息,所述创建缺省承载请求消息包括所述移动管理网元的设备级标 识信息。
21、 根据权利要求 18所述的设备复位通知方法, 其特征在于所 述方法还包括:
所述移动管理网元向所述服务网关发送创建承载请求消息或更 新承载请求消息,所述创建承载请求消息或更新承载请求消息包括所 述移动管理网元的设备级标识信息;
所述服务网关向所述分组数据网关发送所述更新承载请求消息, 所述创建缺省承载请求消息包括所述移动管理网元的设备级标识信 息。
22、根据权利要求 20或 21所述的设备复位通知方法, 其特征在 于还包括:
23、 一种移动管理网元, 其特征在于包括:
第一接收模块, 用于在分组数据网关发生复位后, 接收服务网关 发送的通知消息; 第一处理模块,用于根据所述通知消息将与发生复位的分组数据 网关相关的用户承载上下文信息设置成无效或删除。
24、 根据权利要求 23所述的移动管理网元, 其特征在于所述第 一接收模块包括:
第一接收子模块, 用于在所述分组数据网关发生复位后, 接收所 述服务网关发送的删除承载请求消息,所述删除承载请求消息包括所 述分组数据网关的复位指示信息; 和 /或
第二接收子模块, 用于在所述分组数据网关发生复位后, 接收所 述服务网关发送的指示消息,所述指示消息包括所述分组数据网关的 复位指示信息和所述分组数据网关的设备级标识信息。
25、根据权利要求 23或 24所述的移动管理网元, 其特征在于还 包括: 第一发送模块, 用于在所述移动管理网元发生复位后, 向所述 服务网关发送复位指示消息。
26、 一种服务网关, 其特征在于, 包括:
获知模块, 用于获知第一网元的复位信息;
通知模块, 用于在获知第一网元的复位信息后, 向第三网元发送 所述第一网元发生复位的通知消息。
27、 根据权利要求 26所述的服务网关, 其特征在于所述通知模 块包括:
第二发送模块, 用于在获知分组数据网关发生复位后, 向移动管 理网元发送所述通知消息;
和 /或第三发送模块, 用于在获知移动管理网元发生复位后, 向 分组数据网关发送通知消息,所述通知消息包括所述移动管理网元的 设备级标识信息和复位指示信息。
28、 根据权利要求 27所述的服务网关, 其特征在于所述第二发 送模块包括:
第一发送子模块,用于向所述移动管理网元发送删除承载请求消 息, 所述删除承载请求消息包括所述分组数据网关的复位指示信息; 和 /或 第二发送子模块, 用于向所述移动管理网元发送通知消息, 所述 通知消息包括所述分组数据网关的复位指示信息和所述分组数据网 关的设备级标识信息。
29、根据权利要求 27或 28所述的服务网关,其特征在于还包括: 第二处理模块 ,用于在所述分组数据网关或移动管理网元发生复 位后, 根据所述通知消息将相关的用户上下文设置成无效或删除。
30、 一种服务网关, 其特征在于包括:
第二接收模块, 用于在所述服务网关发生复位后, 接收分组数据 网关发送的移动管理网元的设备级标识信息;
恢复模块,用于根据所述设备级标识信息定位对应的移动管理网 元, 恢复用户承载上下文信息。
31、 一种分组数据网关, 其特征在于包括:
第三接收模块, 用于在移动管理网元发生复位后, 接收服务网关 发送的通知消息,所述通知消息包括所述移动管理网元的设备级标识 信息和复位指示信息;
第三处理模块,用于根据所述通知消息将与发生复位的所述移动 管理网元相关的用户上下文信息设置成无效或删除。
32、根据权利要求 31所述的分组数据网关, 其特征在于还包括: 第四发送模块, 用于在服务网关发生复位后, 向所述服务网关发 送移动管理网元的设备级标识信息。
33、 一种设备复位通知系统, 包括移动管理网元、 服务网关和分 组数据网关, 其特征在于:
所述 Λ良务网关用于获知所述分组数据网关复位,向所述移动管理 网元发送通知消息;
所述移动管理网元用于才艮据所述通知消息,将与所述分组数据网 关相关的用户上下文信息设置成无效或删除。
34、 根据权利要求 33所述的设备复位通知系统, 其特征在于所 述服务网关包括:
第一通知模块, 用于向所述移动管理网元发送删除承载请求消 息, 所述删除承载请求消息包括所述分组数据网关的复位指示信息; 和 /或第二通知模块, 用于向所述移动管理网元发送通知消息, 所述通知消息包括所述分组数据网关的复位指示信息和所述分组数 据网关的设备级标识信息。
35、 一种设备复位通知系统, 包括移动管理网元、 服务网关和分 组数据网关, 其特征在于:
所述服务网关用于获知所述移动管理网元发生复位 ,向所述分组 数据网关发送通知消息,所述通知消息包括所述移动管理网元的设备 级标识信息和复位指示信息;
所述分组数据网关用于根据所述通知消息将与所述移动管理网 元相关的用户上下文信息设置成无效或删除。
36、 一种设备复位通知系统, 包括移动管理网元、 服务网关和分 组数据网关, 其特征在于:
所述分组数据网关用于获知所述服务网关发生复位,向所述服务 网关发送移动管理网元的设备级标识信息;
所述服务网关用于根据所述设备级标识信息定位对应的移动管 理网元, 恢复用户承载上下文信息。
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