WO2016000196A1 - 重建pdn连接的方法、复位中心服务器、移动管理网元和数据网关 - Google Patents

重建pdn连接的方法、复位中心服务器、移动管理网元和数据网关 Download PDF

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Publication number
WO2016000196A1
WO2016000196A1 PCT/CN2014/081320 CN2014081320W WO2016000196A1 WO 2016000196 A1 WO2016000196 A1 WO 2016000196A1 CN 2014081320 W CN2014081320 W CN 2014081320W WO 2016000196 A1 WO2016000196 A1 WO 2016000196A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
network element
message
management network
mobility management
Prior art date
Application number
PCT/CN2014/081320
Other languages
English (en)
French (fr)
Inventor
银宇
戚彩霞
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 RU2016151164A priority Critical patent/RU2666633C2/ru
Priority to EP14896881.1A priority patent/EP3136818B1/en
Priority to PCT/CN2014/081320 priority patent/WO2016000196A1/zh
Priority to JP2017519749A priority patent/JP6368859B2/ja
Priority to CN201480002426.9A priority patent/CN104704866B/zh
Publication of WO2016000196A1 publication Critical patent/WO2016000196A1/zh
Priority to US15/381,756 priority patent/US10499292B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08Mobility data transfer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0072Transmission or use of information for re-establishing the radio link of resource information of target access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/006Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/11Allocation or use of connection identifiers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/19Connection re-establishment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08Mobility data transfer
    • H04W8/10Mobility data transfer between location register and external networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16Gateway arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08Mobility data transfer
    • H04W8/12Mobility data transfer between location registers or mobility servers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W92/00Interfaces specially adapted for wireless communication networks
    • H04W92/16Interfaces between hierarchically similar devices
    • H04W92/24Interfaces between hierarchically similar devices between backbone network devices

Definitions

  • the present invention relates to the field of communications, and in particular, to a method for reestablishing a PDN connection, a reset center server, a mobility management network element, and a data gateway. Background technique
  • the user equipment is accessed through a local wireless access network, and the mobility management network element is responsible for location management, connection management, security authentication, gateway selection, and the like of the mobile user equipment.
  • the service gateway is a local connection of the user equipment.
  • the gateway is responsible for access technology related connection management and data forwarding.
  • the data gateway is a gateway for user equipment to access an external data network.
  • the reset network device After the network device (service gateway and/or data gateway) is reset, the user information on the reset service gateway and the PDN (Packet Data Network) connection information on the reset data gateway are lost.
  • the reset network device discards the data packet because the specific user and PDN connection information cannot be found.
  • the downlink data packet corresponds to a more important service, such as a called voice call, the network device reset will cause the called voice call to fail, reduce the user's satisfaction with the network, and affect the user experience.
  • Embodiments of the present invention provide a method for reestablishing a PDN connection, a reset center server, a mobility management network element, and a data gateway, which are capable of reconstructing a PDN connection affected by a network device reset, thereby improving user experience.
  • a reset center server including: a first receiving unit, configured to receive a first message sent by a data gateway, where the first message includes first identifier information, and a determining unit, configured to The first identifier information determines a mobility management network element identifier corresponding to the first identifier information, and the sending unit is configured to send a second message to the mobility management network element corresponding to the mobility management network element identifier, where the second message is sent And including a user equipment identifier, so that the mobility management network element re-establishes a packet data network PDN connection of the user equipment according to the second message.
  • the first identifier information includes an Internet Protocol IP address of the user equipment or the user equipment identifier
  • the reset center server further includes: a second receiving unit For receiving the user equipment letter sent by the data gateway a first registration message, the first registration message includes an internet protocol IP address of the user equipment and the user equipment identifier, and a third receiving unit, configured to receive, by the mobile management network element, a registration office a second registration message of the user equipment information, where the second registration message includes an identifier of the mobility management network element and the user equipment identifier, and an association unit, configured to use the user equipment identifier to set the network of the user equipment according to the user equipment identifier
  • the protocol IP address and the user equipment identifier are associated with the mobility management network element identifier.
  • the first registration message further includes an access point name APN corresponding to the PDN connection
  • the second message further includes the APN.
  • the mobile management network element re-establishes the PDN connection according to the user equipment identifier and the APN.
  • the first identifier information when the data gateway is reset, includes an IP address of the user equipment, and the determining unit is configured. And determining, by the IP address of the user equipment, the mobility management network element identifier and the user equipment identifier corresponding to the IP address of the user equipment.
  • the first identifier information when the serving gateway is reset, includes the user equipment identifier.
  • the mobility management network element identifier includes the mobile management network element At least one of an IP address, a globally unique number of the mobility management network element, and a node name FQDN of the mobility management network element, the user equipment identity including an International Mobile Subscriber Identity (IMSI) of the user equipment, and mobile station identification At least one of the number MSISDN and the international mobile device identity code IMEI.
  • IMSI International Mobile Subscriber Identity
  • a mobile management network element including: a receiving unit, configured to receive a second message sent by a reset center server, where the second message includes a user equipment identifier, where the second message is used to trigger the The mobile management network element reestablishes the PDN connection, where the second message is sent by the reset center server after receiving the first message sent by the data gateway, where the first message includes the first identifier of the user equipment. And a reconstruction unit, configured to reconstruct the PDN connection according to the second message.
  • the first identifier information includes an Internet Protocol (IP) address of the user equipment or the user equipment identifier
  • the mobility management network element further includes: a sending unit, Sending information for registering user equipment to the reset center server
  • the second registration message includes the identifier of the mobility management network element and the user equipment identifier.
  • IP Internet Protocol
  • the sending unit sends a second registration message for registering information of the user equipment to the reset center server according to the first selection policy, where
  • the first selection policy includes registering information of a user equipment of a PDN connection establishing an IP multimedia subsystem IMS access point name APN, or registering information of a high-level user equipment VIP.
  • the re-establishing unit determines, according to the second selection policy, a PDN connection that needs to be reconstructed, where the second selection policy includes restoring the IMS. APN's PDN connection, or restore the PDN connection of the VIP user.
  • the second registration message further includes an access point name corresponding to the PDN connection.
  • the APN the correspondence includes the Internet Protocol IP address of the user equipment and/or the user equipment identifier, the correspondence between the APN and the mobility management network element identifier, and the second message further includes the APN And the reconstructing unit reconstructs the PDN connection according to the user equipment identifier and the APN.
  • the second message further includes a reset indication, where the reset indication is used Representing the service gateway reset, the reestablishing unit, reselecting the serving gateway, and sending a setup session request message to the reselected serving gateway, where the setup session message includes PDN connection information of the user equipment that needs to be restored, To reconstruct the PDN connection on the reselected serving gateway.
  • the reset indication is used Representing the service gateway reset, the reestablishing unit, reselecting the serving gateway, and sending a setup session request message to the reselected serving gateway, where the setup session message includes PDN connection information of the user equipment that needs to be restored, To reconstruct the PDN connection on the reselected serving gateway.
  • the data gateway and the service gateway are jointly deployed, and the user is A part of the PDN connections of all the PDN connections of the device are established on the reset data gateway, and the reconstruction unit, when the data gateway is reset, reselects the serving gateway, and sends a setup session request message to the reselected serving gateway.
  • the setup session request message carries information about the PDN connection established by the user equipment on other unreset data gateways, so that the reselected service gateway establishes a PDN connection with the other unreset data gateways, where
  • the reselected service gateway is a service gateway that resets the restart, or another service gateway.
  • the data gateway and the service gateway are jointly deployed, and part of the PDN connections of all PDN connections of the user equipment are established on the reset data gateway, where the reconstruction unit is In the case that the data gateway is reset, a deactivation request message is sent to the user equipment, and the PDN connection on the reset data gateway is deleted, so that the user equipment reestablishes the PDN connection.
  • the mobility management network element is an MME
  • the data gateway and the service The gateway is deployed in a unified manner, or the data gateway and the service gateway are separately deployed, and all PDN connections of the user equipment are established on the reset data gateway, and the reconstruction unit, in the case that the data gateway is reset,
  • the user equipment sends a detach request message, where the detach request message carries the cause value of the re-attach request, so that the user equipment deletes all PDN connections according to the detach request message, and re-initiates the attach procedure.
  • the mobility management network element is an SGSN
  • the data gateway and the service The gateway is deployed in a unified manner, or the data gateway and the service gateway are separately deployed, and all PDN connections of the user equipment are established on the reset data gateway, and the reconstruction unit, in the case that the data gateway is reset,
  • the user equipment sends a PDP deactivation message, where the PDP deactivation message carries the cause value of the reactivation request, so that the user equipment deletes all PDP connections according to the PDP deactivation message, and re-initiates the activation PDP request.
  • the data gateway and the service gateway are separately deployed, where the user equipment is A part of the PDN connection is established on the reset data gateway, and the reconstruction unit sends a deactivation request message to the user equipment, where the data gateway is reset, deleting the reset data gateway.
  • the PDN is connected so that the user equipment reestablishes the PDN connection.
  • the method further includes: a determining unit, configured according to the data gateway and the serving gateway The identification information determines whether the data gateway and the service gateway are in a unified deployment, wherein the identification information according to the data gateway and the service gateway includes an IP address of the data gateway and the service gateway, and/or The full domain name of the data gateway and the service gateway.
  • the user equipment identifier includes at least one of an International Mobile Subscriber Identity (IMSI), a Mobile Station Identification Number (MSISDN), and an International Mobile Equipment Identity (IMEI) of the user equipment;
  • the mobility management network element identifier includes at least one of an IP address of the mobility management network element, a globally unique number of the mobility management network element, and a node name FQDN of the mobility management network element.
  • a data gateway including: a receiving unit, configured to receive a downlink data packet; a first sending unit, configured to send a first message to a reset center server, where the first message includes a user equipment An identification information, such that the reset center server reconstructs the PDN connection according to the first message.
  • the method further includes: a second sending unit, configured to send, to the reset center server, a first registration message for registering user equipment information, where the first registration message is Contains the IP address of the user device and the user device ID.
  • the second sending unit sends a first registration message for registering user equipment information to the reset center server according to the selection policy, where
  • the selection policy includes the PDN connection information of the IMS APN of the registered user equipment, or the PDN connection information of the VIP.
  • the first registration message further includes an access point name APN corresponding to the PDN connection, where the first message further includes the APNo
  • the method further includes: a first determining unit, configured to determine the data gateway And resetting, determining that the downlink data packet is from a trusted APN, and determining a user equipment IP address of the downlink data packet header, wherein the first message includes an IP address of the user equipment.
  • the method further includes: a second determining unit, configured to determine a service gateway reset, And determining, by querying a PDN connection context of the user equipment corresponding to the downlink data packet, an identifier of the user equipment corresponding to the downlink data packet, where the first message includes the user equipment identifier.
  • the first message further includes a reset indication, where the reset indication indicates that the serving gateway is reset or the serving gateway is a failure indication message sent by the data gateway, where the failure indication message indicates that the service gateway is reset.
  • the user equipment identifier includes an international mobile subscriber identity of the user equipment At least one of a code IMSI, a mobile station identification number MSISDN, and an international mobile equipment identity code IMEI.
  • the fourth aspect provides a method for reestablishing a PDN connection of a packet data network, including: receiving, by a reset center server, a first message sent by a data gateway, where the first message includes first identifier information; Determining, by the first identifier information, a mobility management network element identifier corresponding to the first identifier information; the reset center server sends a second message to a mobility management network element corresponding to the mobility management network element identifier, where The second message includes a user equipment identity, so that the mobility management network element reconstructs the PDN connection according to the second message.
  • the first identifier information includes an internet protocol IP address of the user equipment or the user equipment identifier
  • the method further includes: the reset center server receiving the a first registration message sent by the data gateway for registering user equipment information, where the first registration message includes an internet protocol IP address of the user equipment and the user equipment identifier; and the reset center server receives the mobile management network a second registration message for registering the user equipment information, where the second registration message includes an identifier of the mobility management network element and the user equipment identifier; and the reset center server is configured according to the user equipment identifier Associating the Internet Protocol IP address of the user equipment with the user equipment identifier with the mobility management network element identifier.
  • the first registration message further includes an access point name APN corresponding to the PDN connection
  • the second message further includes the APN.
  • the mobile management network element re-establishes the PDN connection according to the user equipment identifier and the APN.
  • the first identifier information when the data gateway is reset, includes an IP address of the user equipment, and the reset center server is configured according to Determining, by the first identifier information, the mobility management network element identifier corresponding to the first identifier information, including: the reset center server determining, according to an IP address of the user equipment, the identifier corresponding to an IP address of the user equipment The mobility management network element identifier and the user equipment identifier.
  • the first identifier information when the serving gateway is reset, includes the user equipment identifier.
  • the mobility management network element identifier includes the mobile management network element At least one of an IP address, a globally unique number of the mobility management network element, and a node name FQDN of the mobility management network element, the user equipment identity including an International Mobile Subscriber Identity (IMSI) of the user equipment, and mobile station identification At least one of the number MSISDN and the international mobile device identity code IMEI.
  • IMSI International Mobile Subscriber Identity
  • the fifth aspect provides a method for reestablishing a PDN connection, including: a mobility management network element receives a second message sent by a reset center server, where the second message includes a user equipment identifier, and the second message is used to trigger the The mobile management network element reestablishes the PDN connection, where the second message is sent by the reset center server after receiving the first message sent by the data gateway, where the first message includes the first identifier information; The mobility management network element reconstructs the PDN connection according to the second message.
  • the first identifier information includes an internet protocol IP address of the user equipment or the user equipment identifier
  • the method further includes: the mobile management network element Sending, to the reset center server, a second registration message for registering information of the user equipment, where the second registration message includes an identifier of the mobility management network element and the user equipment identifier.
  • the mobile management network element sends a second registration message for registering information of the user equipment to the reset center server, including: the moving The management network element sends a second registration message for registering information of the user equipment to the reset center server according to the first selection policy, where the first selection policy includes registration to establish an IP multimedia subsystem IMS access point name APN.
  • the first selection policy includes registration to establish an IP multimedia subsystem IMS access point name APN.
  • the mobility management network element re-establishes the PDN connection according to the second message, including: the mobility management network element according to The second selection policy determines a PDN connection that needs to be reconstructed, where the second selection policy includes restoring a PDN connection of the IMS APN, or restoring a PDN connection of the VIP user.
  • the second message further includes the APN, where the mobile tube Reestablishing the PDN connection according to the second message, the network element includes: the mobility management network element reestablishing the PDN connection according to the user equipment identifier and the APN.
  • the second message further includes a reset indication, where the reset indication is used Representing the service gateway resetting
  • the mobility management network element reestablishing the PDN connection according to the second message includes: the mobility management network element reselecting a serving gateway, and sending a setup session to the reselected serving gateway And a request message, where the setup session message includes PDN connection information of the user equipment that needs to be restored, so as to reconstruct the PDN connection on the reselected service gateway.
  • the data gateway and the service gateway are jointly deployed, and the user is A part of the PDN connection of all the PDN connections of the device is established on the reset data gateway, and the mobility management network element reestablishes the PDN connection corresponding to the user equipment according to the second message, including: when the data gateway is reset And the mobile management network element reselects the serving gateway, and sends a setup session request message to the reselected serving gateway, where the setup session request message carries the PDN that the user equipment establishes on other unreset data gateways. Connected information, such that the reselected serving gateway establishes a PDN connection with the other unreset data gateways, wherein the reselected serving gateway is a reset restarted serving gateway, or another serving gateway.
  • the data gateway and the service gateway are jointly deployed, and the user is A part of the PDN connection of all the PDN connections of the device is established on the reset data gateway, and the mobility management network element reestablishes the PDN connection corresponding to the user equipment according to the second message, including: when the data gateway is reset And the mobile management network element sends a deactivation request message to the user equipment, and deletes the PDN connection on the reset data gateway, so that the user equipment reestablishes the PDN connection.
  • the mobility management network element is an MME
  • the data gateway and the service The gateway is deployed in a unified manner, or the data gateway and the service gateway are separately deployed, and all the PDN connections of the user equipment are established on the reset data gateway, and the mobility management network element reestablishes the user equipment according to the second message.
  • Corresponding PDN connection including: in the data network In the case of a reset, the mobility management network element sends a detach request message to the user equipment, where the detach request message carries a cause value of the re-attach request, so that the user equipment deletes all the information according to the detach request message.
  • the PDN connects and re-initiates the attach process.
  • the mobility management network element is an SGSN
  • the data gateway and the service The gateway is deployed in a unified manner, or the data gateway and the service gateway are separately deployed, and all the PDN connections of the user equipment are established on the reset data gateway, and the mobility management network element reestablishes the user equipment according to the second message.
  • Corresponding PDN connection including: in the case that the data gateway is reset, the mobility management network element sends a PDP deactivation message to the user equipment, where the PDP deactivation message carries a cause value of the reactivation request, so that The user equipment deletes all PDP connections according to the PDP deactivation message, and re-initiates an activation PDP request.
  • the data gateway and the service gateway are separately deployed, where the user equipment is A part of the PDN connection is established on the reset data gateway, and the mobility management network element reestablishes the PDN connection corresponding to the user equipment according to the second message, including: when the data gateway is reset, The mobility management network element sends a deactivation request message to the user equipment, and deletes a PDN connection on the reset data gateway, so that the user equipment reestablishes the PDN connection.
  • the method further includes: the mobile management network element according to the data gateway and the service
  • the identification information of the gateway determines whether the data gateway and the serving gateway are in a unified deployment, wherein the identification information according to the data gateway and the serving gateway includes an IP address of the data gateway and the serving gateway, and/or The full domain name of the data gateway and the service gateway.
  • the user equipment identifier includes an international mobile of the user equipment At least one of a subscriber identity IMSI, a mobile station identification number MSISDN, and an international mobile device identity code IMEI;
  • the mobility management network element identifier includes an IP address of the mobility management network element, and a global unique number of the mobility management network element And at least one of a node name FQDN of the mobility management network element.
  • a sixth aspect provides a method for reestablishing a PDN connection, including: receiving, by a data gateway, a downlink data packet; the data gateway sending a first message to a reset center server, where the first message is Including first identification information, so that the reset center server reconstructs the first message according to the first message
  • the method further includes: the data gateway sending, to the reset center server, a first registration message for registering user equipment information, where the first registration message includes a user equipment IP address and user device ID.
  • the data gateway sends a first registration message for registering information about the user equipment to the reset center server, where: the data gateway is configured according to The selection policy sends a first registration message for registering user equipment information to the reset center server, where the selection policy includes PDN connection information of the IMS APN of the registered user equipment, or PDN connection information of the VIP.
  • the first registration message further includes an access point name APN corresponding to the PDN connection, where the first message further includes The APN.
  • the method further includes: the data gateway determining that the data gateway is reset; The data gateway determines that the downlink data packet is from a trusted APN, and determines a user equipment IP address of the downlink data packet header.
  • the first message includes an IP address of the user equipment.
  • the method further includes: the data gateway determining that the serving gateway is reset; The gateway determines the identifier of the user equipment corresponding to the downlink data packet by querying the PDN connection context of the user equipment corresponding to the downlink data packet, where the first message includes the user equipment identifier.
  • the first message further includes a reset indication, where the reset indication indicates that the serving gateway is reset or the serving gateway sends the data gateway to the data gateway
  • the failure indication message indicates that the service gateway is reset.
  • the user equipment identifier includes an international mobile subscriber identity of the user equipment At least one of a code IMSI, a mobile station identification number MSISDN, and an international mobile equipment identity code IMEI.
  • the first message sent by the data gateway is received by the reset center server, and the mobile management network element identifier corresponding to the first identifier information in the stored information is searched according to the first identifier information included in the first message, and Sending a second message to the mobility management network element corresponding to the mobility management network element identifier, where the second message includes the user equipment identifier, so that the mobility management network element can timely reconstruct the affected packet data network PDN connection according to the second message, and improve the user.
  • the mobile management network element identifier corresponding to the first identifier information in the stored information is searched according to the first identifier information included in the first message, and Sending a second message to the mobility management network element corresponding to the mobility management network element identifier, where the second message includes the user equipment identifier, so that the mobility management network element can timely reconstruct the affected packet data network PDN connection according to the second message, and improve the user.
  • FIG. 1 is a schematic diagram of a communication network scenario applicable to an embodiment of the present invention.
  • FIG. 2 is a schematic block diagram of a reset center server in accordance with one embodiment of the present invention.
  • FIG. 3 is a schematic block diagram of a reset center server in accordance with another embodiment of the present invention.
  • FIG. 4 is a schematic block diagram of a mobility management network element in accordance with one embodiment of the present invention.
  • FIG. 5 is a schematic block diagram of a data gateway in accordance with one embodiment of the present invention.
  • FIG. 6 is a schematic flow chart of a method of reconstructing a PDN connection in accordance with one embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of a method of reconstructing a PDN connection according to another embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of a method of reconstructing a PDN connection according to another embodiment of the present invention.
  • 9 is a flow diagram of registered user equipment information in accordance with one embodiment of the present invention.
  • FIG. 10 is a schematic flow chart of a method of reconstructing a PDN connection according to another embodiment of the present invention.
  • FIG. 11 is a schematic flow diagram of a method of reconstructing a PDN connection in accordance with another embodiment of the present invention.
  • Figure 12 is a schematic flow diagram of a method of reconstructing a PDN connection in accordance with another embodiment of the present invention.
  • Figure 13 is a schematic flow diagram of a method of reconstructing a PDN connection in accordance with another embodiment of the present invention.
  • Figure 14 is a schematic flow diagram of a method of reconstructing a PDN connection in accordance with another embodiment of the present invention.
  • Figure 15 is a schematic block diagram of a reset center server in accordance with one embodiment of the present invention.
  • 16 is a schematic block diagram of a mobility management network element in accordance with another embodiment of the present invention.
  • 17 is a schematic block diagram of a data gateway in accordance with one embodiment of the present invention. detailed description
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • FIG. 1 is a schematic diagram of a communication network scenario applicable to an embodiment of the present invention.
  • the logical architecture of the mobile communication network as shown in FIG. 1 includes: a user equipment 110, an access network 120, a mobility management network element 130, a serving gateway 140, a data gateway 150, and a message data network 160.
  • the user equipment 110 is connected to the access network 120 through a local wireless network or a limited network.
  • the mobility management network element 130 is responsible for location management, connection management, security authentication, gateway selection, and the like of the user equipment 110.
  • the service gateway 140 is local to the user equipment 110.
  • the access gateway is responsible for access technology related connection management and data forwarding.
  • the data gateway 150 is a gateway for the user equipment to access the external message data network 160.
  • the logical architecture diagram corresponds to the actual network, and may be an Evolved Packet System (EPS) network.
  • the access network may be a UTRAN (Universal Terrestrial Radio Access Network) or a GERAN (GSM EDGE Radio Access). Network, GSM/EDGE radio access network) or E-UTRAN (Evolved Universal Terrestrial Radio Access Network),
  • the mobility management network element can be Mobility Management Entity (MME) or GPRS Service GPRS Support Node (SGSN)
  • the service gateway can be a Serving Gateway (S-GW)
  • the data gateway can be a packet data network gateway (Packet) Data Network Gateway, PDN-GW).
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • Packet Packet Data Network Gateway
  • Embodiments of the present invention are directed to the case where a data gateway reset and/or a service gateway resets a PDN connection.
  • FIG. 2 is a schematic block diagram of a reset center server in accordance with one embodiment of the present invention.
  • the reset center server 200 of FIG. 2 includes: a first receiving unit 210, a determining unit 220, and a transmitting unit 230.
  • the first receiving unit 210 is configured to receive a first message sent by the data gateway, where the first message includes first identifier information of the user equipment.
  • the determining unit 220 is configured to determine, according to the first identifier information, the mobility management network element identifier corresponding to the first identifier information.
  • the sending unit 230 is configured to send a second message to the mobility management network element corresponding to the mobility management network element identifier, where the second message includes the user equipment identifier, so that the mobility management network element reestablishes the packet data network PDN connection of the user equipment according to the second message. .
  • the embodiment of the present invention may, by receiving the first message sent by the data gateway, search for the mobility management network element identifier corresponding to the first identifier information in the stored information according to the first identifier information of the user equipment included in the first message. And the user equipment identifier is sent to the mobility management network element corresponding to the mobility management network element identifier, where the second message includes the user equipment identifier, so that the mobility management network element reestablishes the PDN connection of the packet data network according to the second message, and can be timely Rebuild the affected PDN connections to enhance the user experience.
  • the data center reset center server receives the first message sent by the data gateway, The first message includes the first identifier information of the user equipment, and then the data center server searches for the mobility management network element identifier and the user equipment identifier corresponding to the first identifier information in the information that is stored when the user equipment information is registered according to the first identifier information.
  • the embodiment of the present invention may receive the first message sent by the data gateway by using the reset center server, and search for the mobile management network corresponding to the first identifier information in the stored information according to the first identifier information of the user equipment included in the first message. Meta-identity and user device ID, and to mobile management The mobile management network element corresponding to the network element identifier sends a second message, where the second message includes the user equipment identifier, so that the mobility management network element re-establishes the PDN connection of the packet data network according to the second message, and can reconstruct the affected PDN connection in time, and improve the user.
  • the second message includes the user equipment identifier
  • the reset center server in the embodiment of the present invention may be a logical entity that is independently deployed, or may be combined with other network elements in the network, for example, may be a Home Subscriber Server (HSS), or Devices such as the Policy and Charging Rules Function (PCRF).
  • HSS Home Subscriber Server
  • PCRF Policy and Charging Rules Function
  • the information about the reset center server can be configured on the data gateway, or can be configured by other network elements, such as HSS, or PCRF, or the O&M (Operation and Maintenance) center to send to the data gateway.
  • the data gateway sends a message to the corresponding reset center server through this information.
  • the following conventional scheme can be used to reconstruct the information of the user/PDN connection affected by the node reset, so that the downlink data packet can be sent to the user equipment as follows:
  • the method for reestablishing the service gateway is as follows: Method 1, after the mobility management network element learns that the service gateway is reset, for the affected user equipment, the mobility management network element reselects the serving gateway, and initiates the service gateway handover procedure, in the selected service. The context of the user device is re-established on the gateway. After the data gateway learns that the service gateway is reset, it retains the PDN connection affected by the service gateway reset for a period of time, waiting for the service gateway selected by the mobility management network element to update the downlink tunnel information to the data gateway. Method 2.
  • the data gateway learns that the service gateway is reset, if the downlink data packet of the user equipment affected by the reset service gateway is received, the data gateway selects the serving gateway and sends a downlink data packet notification message to the service gateway.
  • the serving gateway forwards the downlink packet notification message to the mobility management network element, and the mobility management network element reselects the serving gateway and performs a serving gateway handover procedure, and re-establishes the context of the user on the selected serving gateway.
  • the reconstruction method of the service gateway reset depends on the mobility management network element to detect the service gateway reset, and then triggers recovery. The reset detection mechanism may not be timely, and the downlink data of some user equipments is unreachable.
  • the data gateway needs to send the downlink packet notification message to trigger the recovery.
  • the service gateway and the data gateway are deployed together.
  • the service gateway is reset, the data gateway is also reset, and the data gateway cannot be implemented.
  • the recovery mechanism in method two.
  • the method for reestablishing the data gateway is as follows: After the serving gateway learns that the data gateway is reset, the serving gateway sends a data gateway reset notification message to the mobility management network element, where the message includes an Internet Protocol (IP address) of the data gateway. And the IP address of the service gateway. After receiving the message, the mobility management network element scans the IP address of the data gateway and the IP address of the monthly service gateway. The PDN connection is closed, and the PDN connection deletion/user separation procedure is initiated to trigger the user equipment to re-establish the PDN connection.
  • the recovery method of the data gateway reset depends on the service gateway detecting the data gateway after resetting, and then triggering recovery. There is also a problem that the detection mechanism is not timely.
  • the service gateway It also depends on the service gateway to know the time of scanning the internal affected PDN connection after the data gateway is reset. Before the service gateway learns that the data gateway is reset, the downlink packets of the user equipment may be discarded. . Similarly, for the case where the service gateway and the data gateway are deployed together, when the data gateway is reset, the service gateway is also reset, and the service gateway cannot implement the data gateway reset recovery method.
  • the user needs to wait for a long time, and the downlink data packet cannot reach the user equipment in time, which affects the user experience.
  • the voice call may cause the user equipment to be unable to be used for a long time. Calling the service, affecting the service experience of the user equipment, the caller will have less satisfaction with the network and the service because of repeated attempts to contact the called party.
  • the first message sent by the data gateway may be received by the reset center server, where the first message includes the first identifier information of the user equipment; Searching for the mobility management network element identifier and the user equipment identifier corresponding to the first identifier information in the stored information, and sending a second message to the mobility management network element corresponding to the mobility management network element identifier, where the second message includes the user equipment identifier,
  • the triggering of the mobile management network element re-establishes the PDN connection of the packet data network according to the second message, so that the affected PDN connection can be reconstructed in time, so that the downlink data packet can reach the user equipment in time, thereby reducing the waiting time of the user and improving the user experience.
  • the reset center server of the embodiment of the present invention includes: a first receiving unit 310, a determining unit 320, a sending unit 330, a second receiving unit 340, and a third receiving unit. 350 and association unit 360.
  • the first receiving unit 310, the determining unit 320, and the transmitting unit 330 can respectively implement functions corresponding to the first receiving unit 210, the determining unit 220, and the transmitting unit 230 in FIG. 2, and are not described in detail in order to avoid repetition.
  • the second receiving unit 340 is configured to receive a first registration message that is sent by the data gateway for registering user equipment information, where the first registration message includes an Internet Protocol IP address of the user equipment and the user equipment identifier; and the third receiving unit 350 is configured to receive the mobile And a second registration message sent by the network element for registering the user equipment information, where the second registration message includes the identifier of the mobility management network element and the user equipment identifier; the association unit 360 is configured to use the network protocol IP address of the user equipment according to the user equipment identifier. Associated with the user equipment identifier and the mobility management network element identifier.
  • the reset center server may receive a first registration message sent by the data gateway for registering user equipment information, where the first registration message includes an Internet Protocol IP address of the user equipment and a user equipment identifier; and the reset center server receives the information sent by the mobility management network element.
  • the reset center server associates the data gateway with the mobility management network element according to the user equipment identifier, and the PDN is associated with the PDN
  • the first registration message further includes an access point name APN corresponding to the PDN connection
  • the second message further includes an APN, so that the mobility management network element reestablishes the PDN connection according to the user equipment identifier and the APN.
  • the first identifier information includes an IP address of the user equipment
  • the determining unit 220 determines the IP address of the user equipment according to the IP address of the user equipment.
  • the first identifier information when the serving gateway is reset, includes a user equipment identifier.
  • the first identification information includes a user equipment identity when the serving gateway is reset.
  • the mobility management network element identifier includes at least one of an IP address of the mobility management network element, a global unique number of the mobility management network element, and a node name FQDN of the mobility management network element, where the user equipment identifier includes At least one of an International Mobile Subscriber Identity (IMSI) of the user equipment, a mobile station identification number MSISDN, and an international mobile equipment identity code IMEI.
  • IMSI International Mobile Subscriber Identity
  • MSISDN mobile station identification number
  • IMEI international mobile equipment identity code
  • the mobility management network element 400 shown in FIG. 4 includes: a receiving unit 410 and a reconstruction unit 420.
  • the receiving unit 410 is configured to receive a second message sent by the reset center server, where the second message includes a user equipment identifier, the second message is used to trigger the mobility management network element to reestablish the PDN connection of the user equipment, and the second message is a reset center server.
  • the first message After receiving the first message sent by the data gateway, the first message includes the first identifier information of the user equipment; the reconstruction unit 420 is configured to reestablish the PDN connection of the user equipment according to the second message.
  • the embodiment of the present invention may receive the second message sent by the reset center server, where the second message includes the user equipment identifier, the second message is used to trigger the mobility management network element to reconstruct the PDN connection, and the mobile management network element reconstructs the user according to the second message.
  • the PDN connection of the device can rebuild the affected PDN connection in time to improve the user experience.
  • the first identifier information includes an Internet Protocol IP address or a user equipment identifier of the user equipment
  • the mobility management network element further includes: a sending unit 430.
  • the sending unit 430 is configured to send, to the reset center server, a second registration message for registering information of the user equipment, where the second registration message includes an identifier of the mobility management network element and a user equipment identifier.
  • the embodiment of the present invention needs to complete the registration process of the user equipment before the data gateway and/or the service gateway is reset, and register the related information of the PDN to the reset center server.
  • the mobile management registration user equipment information includes: The network element sends a second registration message to the reset center server with information for registering the user equipment, where the second registration message includes an identifier of the mobility management network element and a user equipment identifier.
  • the sending unit 430 sends a second registration message for registering information of the user equipment to the reset center server according to the first selection policy, where the first selection policy includes registration to establish an IP multimedia subsystem IMS.
  • the user equipment identity may include at least one of the International Mobile Subscriber Identity (IMSI) of the user equipment, the mobile station identification number MSISDN, and the international mobile equipment identity code IMEI.
  • the mobility management network element identifier may include at least one of an IP address of the mobility management network element, a globally unique number of the mobility management network element, and a node name FQDN of the mobility management network element.
  • the reconstruction unit 420 determines, according to the second selection policy, a PDN connection that needs to be re-established, where the second selection policy includes restoring a PDN connection of the IMS APN, or restoring a PDN connection of the VIP user.
  • the second registration message further includes an access point name APN corresponding to the PDN connection of the user equipment, where the correspondence includes an Internet Protocol IP address of the user equipment and/or a user equipment identifier, APN, and mobility management.
  • the second message further includes an APN, and the reconstruction unit 420 reconstructs the PDN connection according to the user equipment identifier and the APN.
  • the second message further includes a reset indication, where the reset indication is used to indicate that the serving gateway is reset, the reestablishing unit 420 reselects the serving gateway, and sends a setup session request message to the reselected serving gateway to establish a session.
  • the message contains the PDN connection information of the user equipment that needs to be recovered in order to re-establish the PDN connection on the reselected service gateway.
  • the reselected service gateway is a service gateway or other service gateway that resets and restarts. Further, in an actual application, the mobility management network element may be reconstructed according to the state of the user equipment. PDN connection.
  • the mobility management network element when the PDN connection is re-established, if the user equipment is in a connection state with the mobility management network element, the mobility management network element first releases the signaling connection with the user equipment, turns the user equipment into an idle state, and then moves.
  • the management network element reselects the serving gateway, and sends a setup session request message to the reselected serving gateway, and the setup session message includes the PDN connection information of the user equipment that needs to be restored, so as to reconstruct the PDN connection on the reselected serving gateway.
  • the mobility management network element first performs a reselection of the serving gateway, and The selected service gateway sends a setup session request message, and the setup session message includes the PDN connection information of the user equipment that needs to be restored, so as to re-establish the PDN connection on the reselected service gateway, and then the mobile management network element performs the subsequent initiation service request, The tracking area update of the mobile management network element or the routing area update process unchanged by the mobile management network element.
  • the mobility management network element notifies the target side mobility management network element that the process of reselecting the service gateway needs to be performed. Re-selecting the serving gateway by the target mobility management network element, and sending a setup session request message to the reselected serving gateway, and establishing a PDN connection information of the user equipment that needs to be restored in the session message, so as to reconstruct the PDN on the reselected serving gateway. connection.
  • the mobility management network element rejects the handover request or the reassignment request message, turns the user equipment into an idle state, and then the mobility management network element reselects the serving gateway and reselects the serving gateway.
  • a setup session request message is sent, and the setup session message includes PDN connection information of the user equipment that needs to be restored, so as to reconstruct the PDN connection on the reselected service gateway.
  • the data gateway and the service gateway are jointly deployed, and part of the PDN connections of all PDN connections of the user equipment are established on the reset data gateway.
  • the reconstruction unit 420 when the data gateway is reset, reselects the serving gateway, and sends a setup session request message to the reselected serving gateway, where the setup session request message carries the information of the PDN connection established by the user equipment on other unreset data gateways. , so that the reselected service gateway establishes a PDN connection with other unreset data gateways, wherein the reselected service gateway is a service gateway that resets the restart, or another service gateway.
  • the data gateway and the service gateway are jointly deployed, and part of the PDN connections of all PDN connections of the user equipment are established on the reset data gateway,
  • the reconstruction unit 420 upon resetting the data gateway, sends a deactivation request message to the user equipment, and deletes the PDN connection on the reset data gateway, so that the user equipment reestablishes the PDN connection.
  • the mobility management network element 400 is an MME
  • the data gateway and the service gateway are deployed in a unified manner, or the data gateway and the service gateway are separately deployed, and all PDN connections of the user equipment are established on the reset data gateway.
  • the re-establishment unit 420 sends a disconnection request message to the user equipment in the case that the data gateway is reset, and the separation request message carries the cause value of the re-attach request, so that the user equipment deletes all PDN connections according to the separation request message, and re-initiates the establishment of the PDN request. .
  • the mobility management network element 400 is an SGSN
  • the data gateway and the service gateway are deployed in a unified manner, or the data gateway and the service gateway are separately deployed, and all PDN connections of the user equipment are established on the reset data gateway.
  • the reconstruction unit 420 sends a PDP deactivation message to the user equipment in the case that the data gateway is reset, and the PDP deactivation message carries the cause value of the reactivation request, so that the user equipment deletes all PDP connections according to the PDP deactivation message, and re-initiates Activate the PDP request.
  • the data gateway and the service gateway are separately deployed, and part of the PDN connections of all PDN connections of the user equipment are established on the reset data gateway.
  • the reconstruction unit 420 upon resetting the data gateway, sends a deactivation request message to the user equipment, and deletes the PDN connection on the reset data gateway, so that the user equipment reestablishes the PDN connection.
  • the mobility management network element of the embodiment of the present invention further includes: a determining unit 440.
  • the determining unit 440 is configured to determine, according to the identifier information of the data gateway and the serving gateway, whether the data gateway and the serving gateway are in a unified deployment, where the identifier information of the data gateway and the serving gateway includes an IP address of the data gateway and the serving gateway, And/or the full domain name of the data gateway and the service gateway.
  • the user equipment identifier includes at least one of an International Mobile Subscriber Identity (IMSI), a Mobile Station Identification Number (IMSISDN), and an International Mobile Equipment Identity (IMEI) of the user equipment;
  • the mobility management network element identifier includes a mobility management network. At least one of the IP address of the element, the globally unique number of the mobility management network element, and the node name FQDN of the mobility management network element.
  • FIG. 5 is a schematic block diagram of a data gateway in accordance with one embodiment of the present invention.
  • the data gateway 500 shown in FIG. 5 includes: a receiving unit 510 and a first transmitting unit 520.
  • the receiving unit 510 is configured to receive the downlink data packet;
  • the first sending unit 520 is configured to send the first message to the reset center server, where the first message includes the first identifier information of the user equipment, so as to reset the center server according to the first message. Rebuild the PDN connection of the user equipment.
  • the embodiment of the present invention may determine the first message according to the header information of the downlink data packet, where the first message includes the first identifier information of the user equipment, and the data gateway sends the first message to the reset center server, so as to reset the central server. Restore the connection of the PDN, and rebuild the affected PDN connection in time to improve the user experience.
  • the data gateway of the embodiment of the present invention further includes a second sending unit 530.
  • the second sending unit 530 is configured to send, to the reset center server, a first registration message for registering user equipment information, where the first registration message includes an IP address of the user equipment and a user equipment identifier.
  • the embodiment of the present invention needs to complete the registration process of the user equipment before the data gateway and/or the service gateway is reset, and register the information about the original PDN to the reset center server.
  • the data gateway registration user equipment information includes: The gateway sends a first registration message to the reset center server for registering information of the user equipment, where the first registration message includes an IP address of the user equipment and a user equipment identifier.
  • the data gateway may send a first registration message for registering user equipment information to the reset center server according to the selection policy, where the selection policy includes the PDN connection information of the IP multimedia subsystem IMS access point name APN of the registered user equipment, Register the PDN connection information of the high-level user equipment VIP or all reset PDN connections of the user equipment.
  • the selection policy includes the PDN connection information of the IP multimedia subsystem IMS access point name APN of the registered user equipment, Register the PDN connection information of the high-level user equipment VIP or all reset PDN connections of the user equipment.
  • the second sending unit 530 sends a first registration message for registering user equipment information to the reset center server according to the selection policy, where the selecting policy includes registering PDN connection information of the IMS APN of the user equipment. , or the PDN connection information of the VIP.
  • the user equipment identity includes at least one of the International Mobile Subscriber Identity (IMSI) of the user equipment, the mobile station identification number MSISDN, and the international mobile equipment identity code IMEI.
  • IMSI International Mobile Subscriber Identity
  • the first registration message further includes an access point name APN corresponding to the PDN connection, and the first message further includes an APN.
  • the data gateway of the embodiment of the present invention further includes: a first determining unit 540.
  • the first determining unit 540 is configured to determine a data gateway reset, and determine a downlink data packet. From the trusted APN, and determining the user equipment IP address of the downlink packet header, where the first identification information includes the IP address of the user equipment.
  • the data gateway of the embodiment of the present invention further includes: a second determining unit 550.
  • the second determining unit 550 is configured to determine the serving gateway reset, and determine the identifier of the user equipment corresponding to the downlink data packet by querying the PDN connection context of the user equipment corresponding to the downlink data packet; and determining the first message according to the identifier of the user equipment.
  • the first identifier information includes an identifier of the user equipment.
  • the data gateway learns that the service gateway is reset by using a reset counter in the signaling message or a path detection mechanism. Or the data gateway sends the downlink data packet to the service gateway. The service gateway cannot send the user equipment information corresponding to the downlink data packet, so the error indication message is sent to the data gateway, and the data gateway learns that the service gateway is abnormal.
  • the first message further includes a reset indication, where the reset indication indicates that the service gateway resets or the service gateway sends a failure indication message to the data gateway, and the failure indication message indicates that the service gateway is reset.
  • the user equipment identifier includes at least one of an International Mobile Subscriber Identity (IMSI), a Mobile Station Identification Number (MSISDN), and an International Mobile Equipment Identity (IMEI) of the user equipment.
  • IMSI International Mobile Subscriber Identity
  • MSISDN Mobile Station Identification Number
  • IMEI International Mobile Equipment Identity
  • FIG. 6 is a schematic flow chart of a method of reconstructing a PDN connection in accordance with one embodiment of the present invention.
  • the method shown in Figure 6 is performed by the reset center server.
  • the method shown in Figure 6 includes:
  • the reset center server receives the first message sent by the data gateway, where the first message includes the first identifier information.
  • the data gateway determines that the data gateway and/or the service gateway are reset, and the data gateway sends the first message to the reset center server.
  • the reset center server determines, according to the first identifier information, the mobile management network element identifier corresponding to the first identifier information.
  • the reset center server may search for the mobility management network element identifier that matches the first identifier information in the information stored in the previous user equipment information registration. 630.
  • the reset center server sends a second message to the mobility management network element corresponding to the mobility management network element identifier, where the second message includes the user equipment identifier, so that the mobility management network element reestablishes the packet data network PDN connection of the user equipment according to the second message.
  • the reset center server receives the first message sent by the data gateway, where The message includes the first identifier information, and then the reset center server searches for the mobility management network element identifier corresponding to the first identifier information in the information that is stored when the user equipment information is registered, according to the first identifier information, and identifies the mobile management network element with the mobile management network element.
  • the corresponding mobility management network element sends a second message, where the second message includes the user equipment identifier, so that the mobility management network element reconstructs the packet data network PDN connection according to the second message, and the network device (data gateway and/or service gateway) is reset. Recovery of affected PDN connections.
  • the embodiment of the present invention may receive the first message sent by the data gateway by using the reset center server, and search for the mobility management network element identifier corresponding to the first identifier information in the stored information according to the first identifier information included in the first message. And sending a second message to the mobility management network element corresponding to the mobility management network element identifier, where the second message includes the user equipment identifier, so that the mobility management network element reestablishes the PDN connection of the packet data network according to the second message, and can timely reconstruct the affected PDN connectivity for improved user experience.
  • the reset center server in the embodiment of the present invention may be a logical entity that is independently deployed, or may be combined with other network elements in the network, for example, may be a Home Subscriber Server (HSS), or Devices such as the Policy and Charging Rules Function (PCRF).
  • HSS Home Subscriber Server
  • PCRF Policy and Charging Rules Function
  • the information about the reset center server can be configured on the data gateway, or can be configured by other network elements, such as HSS, or PCRF, or the O&M (Operation and Maintenance) center to send to the data gateway.
  • the data gateway sends a message to the corresponding reset center server through this information.
  • the method for reestablishing the service gateway is as follows: Method 1, after the mobility management network element learns that the service gateway is reset, for the affected user equipment, the mobility management network element reselects the serving gateway, and initiates the service gateway handover procedure, in the selected service. The context of the user device is re-established on the gateway. After the data gateway learns that the service gateway is reset, the PDN connection context affected by the service gateway reset is reserved for a period of time, and the service gateway selected by the mobility management network element waits for the service gateway to update the downlink tunnel to the data gateway. Information. Method 2.
  • the data gateway learns that the service gateway is reset, if the downlink data packet of the user equipment affected by the reset service gateway is received, the data gateway selects the serving gateway, and sends a downlink data packet notification message to the service gateway.
  • the serving gateway forwards the downlink packet notification message to the mobility management network element, and the mobility management network element reselects the serving gateway and performs a serving gateway handover procedure, and re-establishes the context of the user on the selected serving gateway.
  • the reconstruction method 1 of the service gateway reset depends on the mobility management network element to detect the service gateway reset, and then triggers recovery. The reset detection mechanism may not be timely, and the downlink data of some user equipments is unreachable.
  • Method 2 needs to send a downlink packet notification message by the data gateway to trigger recovery.
  • the service gateway and the data gateway are deployed together.
  • the data gateway is also reset, and the data gateway cannot be implemented.
  • the recovery mechanism in method two is also used.
  • the method for reestablishing the data gateway is as follows: After the serving gateway learns that the data gateway is reset, the serving gateway sends a data gateway reset notification message to the mobility management network element, where the message includes an Internet Protocol (IP address) of the data gateway. And the IP address of the service gateway. After receiving the message, the mobile management network element scans the relevant PDN connection according to the IP address of the data gateway and the IP address of the monthly service gateway, and initiates a PDN connection deletion/user separation process to trigger the user equipment to reestablish the PDN connection.
  • IP address Internet Protocol
  • the mobile management network element scans the relevant PDN connection according to the IP address of the data gateway and the IP address of the monthly service gateway, and initiates a PDN connection deletion/user separation process to trigger the user equipment to reestablish the PDN connection.
  • the recovery method of the data gateway reset depends on the service gateway detecting the data gateway reset before triggering the recovery. There is also a problem that the detection mechanism is not timely.
  • the service gateway It also depends on the service gateway to know the time of scanning the internal affected PDN connection after the data gateway is reset. Before the service gateway learns that the data gateway is reset, the downlink packets of the user equipment may be discarded. . Similarly, for the case where the service gateway and the data gateway are deployed together, when the data gateway is reset, the service gateway is also reset, and the service gateway cannot implement the data gateway reset recovery method.
  • the user needs to wait for a long time, and the downlink data packet cannot reach the user equipment in time, which affects the user experience.
  • the voice call may cause the user equipment to be unable to be used for a long time. Calling the service, affecting the service experience of the user equipment, the caller will have less satisfaction with the network and the service because of repeated attempts to contact the called party.
  • the first message sent by the data gateway may be received by the reset center server, where the first message includes the first identifier information of the user equipment; Searching for the mobility management network element identifier and the user equipment identifier corresponding to the first identifier information in the stored information, and sending a second message to the mobility management network element corresponding to the mobility management network element identifier, where the second message includes the user equipment identifier,
  • the affected PDN connection can be reconstructed in time, so that The downlink data packet can reach the user equipment in time, reducing the waiting time of the user and improving the user experience.
  • the first identifier information includes an Internet Protocol IP address or a user equipment identifier of the user equipment
  • the method of the embodiment of the present invention further includes: receiving, by the reset center server, the information about the user equipment information sent by the data gateway. a registration message, the first registration message includes an internet protocol IP address of the user equipment and the user equipment identifier; the reset center server receives a second registration message sent by the mobility management network element for registering user equipment information, where the second registration message includes mobility management The identifier of the network element and the identifier of the user equipment; the reset center server associates the Internet Protocol IP address of the user equipment and the user equipment identifier with the mobility management network element identifier according to the user equipment identifier.
  • the embodiment of the present invention needs to complete the registration process of the user equipment before the data gateway and/or the service gateway is reset, and register the related information of the PDN to the reset center server.
  • the reset center server can receive the data gateway for sending. a first registration message for registering user equipment information, where the first registration message includes an Internet Protocol IP address of the user equipment and a user equipment identifier; and the reset center server receives a second registration message sent by the mobility management network element for registering user equipment information, The second registration message includes the identifier of the mobility management network element and the user equipment identifier.
  • the reset center server associates the related information of the PDN connection according to the user equipment identifier.
  • the first registration message may further include an access point name APN corresponding to the PDN connection
  • the second message further includes an APN, so that the mobility management network element is reconstructed according to the user equipment identifier and the APN. PDN connection.
  • the mobility management network element can determine the PDN connection that needs to be reconstructed based on the APN information.
  • the first identifier information may include an IP address of the user equipment and/or a user equipment identifier.
  • the first identifier information includes an IP address of the user equipment.
  • the reset center server determines the mobility management network element identifier and the user equipment identifier corresponding to the IP address of the user equipment according to the IP address of the user equipment.
  • the first identification information includes a user equipment identity when the serving gateway is reset.
  • the user equipment identifier may include at least one of an International Mobile Subscriber Identity (IMSSI) of the user equipment, a mobile station identification number MSISDN, and an international mobile equipment identity code IMEI.
  • IMSI International Mobile Subscriber Identity
  • MSISDN mobile station identification number
  • IMEI international mobile equipment identity code
  • the mobility management network element identifier includes at least one of an IP address of the mobility management network element, a global unique number of the mobility management network element, and a node name FQDN of the mobility management network element.
  • FIG. 7 is a schematic flowchart of a method of reconstructing a PDN connection according to another embodiment of the present invention.
  • the method shown in Figure 7 is performed by the mobility management network element.
  • the method shown in Figure 7 includes:
  • the mobility management network element receives a second message sent by the reset center server, where the second message packet is sent.
  • the second message is used to trigger the mobility management network element to re-establish the PDN connection, and the second message is sent by the reset center server after receiving the first message sent by the data gateway, where the first message includes the first identifier information.
  • the mobility management network element reestablishes the PDN connection according to the second message.
  • the embodiment of the present invention may receive, by the mobility management network element, a second message sent by the reset center server, where the second message includes the user equipment identifier, and the second message is used to trigger the mobility management network element to reestablish the PDN connection;
  • the second message rebuilds the PDN connection of the user equipment, which can reconstruct the affected PDN connection in time and improve the user experience.
  • the first identifier information includes an Internet Protocol IP address or a user equipment identifier of the user equipment
  • the method of the embodiment of the present invention further includes: the mobility management network element sends information for registering the user equipment to the reset center server.
  • the second registration message includes the identifier of the mobility management network element and the user equipment identifier.
  • the embodiment of the present invention needs to complete the registration process of the user equipment before the data gateway and/or the service gateway is reset, and register the related information of the PDN to the reset center server.
  • the mobile management registration user equipment information includes: The network element sends a second registration message for registering the information of the user equipment to the reset center server, where the second registration message includes the identifier of the mobility management network element and the user equipment identifier.
  • the mobility management network element sends a second registration message for registering user equipment information to the reset center server according to the first selection policy, where the first selection policy includes registering an IP multimedia subsystem IMS access point name of the user equipment.
  • the mobility management network element determines, according to the second selection policy, a PDN connection that needs to be reconstructed, where the second selection policy includes restoring a PDN connection of the IMS APN, or restoring a PDN connection of the VIP user. .
  • the user equipment identity may include at least one of the International Mobile Subscriber Identity (IMSI) of the user equipment, the mobile station identification number MSISDN, and the international mobile equipment identity code IMEI.
  • the mobility management network element identifier may include at least one of an IP address of the mobility management network element, a globally unique number of the mobility management network element, and a node name FQDN of the mobility management network element.
  • the second registration message further includes an access point name APN corresponding to the PDN connection of the user equipment, where the correspondence includes an Internet Protocol IP address of the user equipment and/or a user equipment identifier, APN, and mobility management.
  • the second message also includes an APN, wherein, in 720, the mobility management network element reestablishes the PDN connection according to the user equipment identity and the APN.
  • the second message further includes a reset indication, where the reset indication is used to indicate a serving gateway reset, and in 720, the mobility management network element reselects the serving gateway, and sends a setup session to the reselected serving gateway.
  • the request message, the setup session message contains the PDN connection information of the user equipment that needs to be restored, so as to reconstruct the PDN connection on the reselected service gateway.
  • the reselected service gateway is a service gateway or other service gateway that resets and restarts.
  • the mobility management network element reselects the serving gateway and reestablishes the user context.
  • the mobility management network element may re-establish a PDN connection according to the state of the user equipment.
  • the mobility management network element when the PDN connection is re-established, if the user equipment is in a connection state with the mobility management network element, the mobility management network element first releases the signaling connection with the user equipment, turns the user equipment into an idle state, and then moves.
  • the management network element reselects the serving gateway, and sends a setup session request message to the reselected serving gateway, and the setup session message includes the PDN connection information of the user equipment that needs to be restored, so as to reconstruct the PDN connection on the reselected serving gateway.
  • the mobility management network element first performs a reselection of the serving gateway, and The selected service gateway sends a setup session request message, and the setup session message includes the PDN connection information of the user equipment that needs to be restored, so as to re-establish the PDN connection on the reselected service gateway, and then the mobile management network element performs the subsequent initiation service request, The tracking area update of the mobile management network element or the routing area update process unchanged by the mobile management network element.
  • the mobility management network element notifies the target side mobility management network element that the process of reselecting the service gateway needs to be performed. Re-selecting the serving gateway by the target mobility management network element, and sending a setup session request message to the reselected serving gateway, and establishing a PDN connection information of the user equipment that needs to be restored in the session message, so as to reconstruct the PDN on the reselected serving gateway. connection.
  • the mobility management network element rejects the handover request or the reassignment request message, turns the user equipment into an idle state, and then the mobility management network element reselects the serving gateway and reselects the serving gateway.
  • Sending a session establishment request message, and establishing a PDN connection information of the user equipment that needs to be restored in the session message, so as to be in the reselected service network Close the rebuild PDN connection.
  • the data gateway and the service gateway are jointly deployed, and part of the PDN connections of all PDN connections of the user equipment are established on the reset data gateway.
  • the mobility management network element reselects the serving gateway, and sends a setup session request message to the reselected service gateway, where the setup session request message carries the information of the PDN connection established by the user equipment on other unreset data gateways, so as to reselect the service gateway.
  • a PDN connection is established with other unreset data gateways, wherein the reselected service gateway is a service gateway that resets the restart, or another service gateway.
  • the data gateway and the service gateway are deployed in a unified manner, and part of the PDN connections of all PDN connections of the user equipment are established on the reset data gateway.
  • the mobility management network element sends a deactivation request message to the user equipment, and deletes the PDN connection on the reset data gateway, so that the user equipment reestablishes the PDN connection.
  • the mobility management network element is an MME
  • the data gateway and the service gateway are jointly deployed, or the data gateway and the service gateway are separately deployed, and all PDN connections of the user equipment are established on the reset data gateway, where 720, in the case that the data gateway is reset, the mobility management network element sends a detach request message to the user equipment, where the detach request message carries the cause value of the re-attach request, so that the user equipment deletes all PDN connections according to the detach request message, and restarts Initiate the attach process.
  • the mobility management network element is an SGSN
  • the data gateway and the service gateway are deployed in a unified manner, or the data gateway and the service gateway are separately deployed, and all PDN connections of the user equipment are established on the reset data gateway.
  • the mobility management network element sends a PDP deactivation message to the user equipment, and the PDP deactivation message carries the cause value of the reactivation request, so that the user equipment deletes all PDP connections according to the PDP deactivation message. , and re-initiate the activation of the PDP request.
  • the data gateway and the service gateway are separately deployed, and part of the PDN connections of all PDN connections of the user equipment are established on the reset data gateway.
  • mobility management In 720, in case of data gateway reset, mobility management The network element sends a deactivation request message to the user equipment, and deletes the PDN connection on the reset data gateway, so that the user equipment reestablishes the PDN connection.
  • the mobility management network element may determine, according to the identifier information of the data gateway and the serving gateway, whether the data gateway and the service gateway are deployed in a unified manner, wherein the identifiers of the data gateway and the serving gateway are Information includes the IP address and/or number of the data gateway and the service gateway According to the full domain name of the gateway and the service gateway.
  • FIG. 8 is a schematic flowchart of a method of reconstructing a PDN connection according to another embodiment of the present invention.
  • the method shown in Figure 8 is performed by a data gateway, and the method shown in Figure 8 includes:
  • the data gateway receives the downlink data packet.
  • the data gateway receives the downlink data packet, and the data gateway determines the data gateway/service gateway reset.
  • the data gateway sends a first message to the reset center server, where the first message includes first identifier information of the user equipment, so that the reset center server reestablishes the PDN connection according to the first message.
  • the embodiment of the present invention may send a first message to the reset center server by using the data gateway, where the first message includes the first identifier information of the user equipment, so that the central server is reset to restore the PDN connection, and the affected PDN can be reconstructed in time. Connect to enhance the user experience.
  • the method of the embodiment of the present invention further includes: the data gateway sends a first registration message for registering information of the user equipment to the reset center server, where the first registration message includes an IP address of the user equipment and the user equipment. logo.
  • the embodiment of the present invention needs to complete the registration process of the user equipment before the data gateway and/or the service gateway is reset, and register the information about the original PDN to the reset center server.
  • the data gateway registration user equipment information includes: The gateway sends a first registration message to the reset center server for registering information of the user equipment, where the first registration message includes an IP address of the user equipment and a user equipment identifier.
  • the data gateway may send a first registration message for registering user equipment information to the reset center server according to the selection policy, where the selection policy includes the PDN connection information of the IP multimedia subsystem IMS access point name APN of the registered user equipment, Register the PDN connection information of the high-level user equipment VIP or all the reset PDN connection information of the registered user equipment.
  • the selection policy includes the PDN connection information of the IP multimedia subsystem IMS access point name APN of the registered user equipment, Register the PDN connection information of the high-level user equipment VIP or all the reset PDN connection information of the registered user equipment.
  • the user equipment identity includes at least one of the International Mobile Subscriber Identity (IMSI) of the user equipment, the mobile station identification number MSISDN, and the international mobile equipment identity code IMEI.
  • IMSI International Mobile Subscriber Identity
  • MSISDN mobile station identification number
  • IMEI international mobile equipment identity code
  • the first registration message further includes an access point name APN corresponding to the PDN connection, and the first message further includes an APN.
  • the data gateway sends a first registration message for registering user equipment information to the reset center server according to the selection policy, where the selection policy includes PDN connection information of the IMS APN of the user equipment, or a PDN of the VIP Connection information.
  • the method of the embodiment of the present invention further includes: determining, by using a data gateway The data gateway resets; the data gateway determines that the downlink data packet is from the trusted APN, and determines the user equipment IP address of the downlink data packet header, where the first identification information includes the IP address of the user equipment.
  • the method of the embodiment of the present invention further includes: the data gateway determines that the serving gateway is reset; and the data gateway determines the user equipment corresponding to the downlink data packet by querying the PDN connection context of the user equipment corresponding to the downlink data packet.
  • the identifier where the first identifier information includes an identifier of the user equipment.
  • the data gateway learns that the service gateway is reset by using a reset counter in the signaling message or a path detection mechanism. Or the data gateway sends the downlink data packet to the service gateway. The service gateway cannot send the user equipment information corresponding to the downlink data packet, so the error indication message is sent to the data gateway, and the data gateway learns that the service gateway is abnormal.
  • the first message further includes a reset indication, where the reset indication is used to indicate a service gateway reset or a failure indication message sent by the serving gateway to the data gateway, and the failure indication message indicates that the service gateway is reset.
  • FIG. 6 to FIG. 8 are merely for facilitating the understanding of the embodiments of the present invention, and the embodiments of the present invention are not limited to the specific numerical values or specific examples illustrated. A person skilled in the art will be able to make various modifications and changes in accordance with the examples of FIG. 6 to FIG. 8 which are within the scope of the embodiments of the present invention. Embodiments of the present invention are described in more detail below with reference to specific examples.
  • the access network may be a 3GPP access of the GERAN, and the corresponding access network device is a BSS, and the access network may also be a 3GPP access of the UTRAN.
  • the access network device is an RNS, and the access network may also be an E-UTRAN 3GPP access, and the corresponding access network device is an Evolved Node B (eNodeB), and the mobility management network element may be an S4 SGSN or an MME.
  • the service gateway can be an SGW and the data gateway can be a PGW. As shown in Figure 9, it includes:
  • the user equipment sends a request message to the mobility management network element.
  • the user equipment initiates a connection establishment process. Specifically, the user equipment sends an attach request or a Packet Data Protocol (PDP) activation request or a PDN connection establishment request message to the mobility management network element. 902. The mobility management network element sends a setup session request message to the serving gateway.
  • PDP Packet Data Protocol
  • the mobility management network element After receiving the request message sent by the user equipment, the mobility management network element sends a setup session request message to the serving gateway according to the request message.
  • the serving gateway sends a session establishment request message to the data gateway.
  • the serving gateway after receiving the request message sent by the mobility management network element, the serving gateway sends a setup session request message to the data gateway according to the request message.
  • the data gateway sends a session establishment response message to the serving gateway.
  • the data gateway After the data gateway receives the setup session request message, the data gateway establishes a PDN connection of the user equipment, and sends a session establishment response message to the service gateway.
  • the data gateway sends a message for registering user equipment information to the reset center server.
  • the message includes an IP address of the user equipment and a user equipment identifier.
  • the message may also include information such as an Access Point Name (APN) corresponding to the PDN connection.
  • APN Access Point Name
  • the user equipment identifier may be an International Mobile Subscriber Identification Number (IMS I), a Mobile Subscriber International ISDN/PSTN number (MSISDN), or an International Mobile Equipment Identity (International Mobile Equipment Identity, At least one of IMEI).
  • IMS I International Mobile Subscriber Identification Number
  • MSISDN Mobile Subscriber International ISDN/PSTN number
  • IMEI International Mobile Equipment Identity
  • the reset central server node may be a logical entity that is independently deployed, or may be combined with other network elements in the network.
  • the reset central server may be a Home Subscriber Server (HSS) or a policy and charging rule function ( Policy and Charging Rules Function (PCRF) and other devices.
  • the information about the reset center server can be configured on the data gateway or sent to the data gateway through other NEs such as HSS, PCRF, or NMS.
  • the data gateway sends the message to the corresponding reset center server through this information.
  • the information of the reset center server may be the IP address of the reset center server, the global unique number of the central server, or the node name (FullyQualified Domain Name, FQDN) of the reset center server.
  • the data gateway may select a PDN connection according to the selection policy, and register the user equipment information to the reset center server for the PDN connection that meets the selection policy. For example, only the PDN connection information of the IP Multimedia Subsystem (IMS) APN of the user equipment is registered, and the PDN information of only the High Priority People (VIP) is registered.
  • the selection policy can be pre-configured on the data gateway or from other network elements, such as HSS or PCRF. 906.
  • the serving gateway sends a session establishment response message to the mobility management network element.
  • the serving gateway establishes a session of the user equipment, and returns a session establishment response message to the mobility management network element.
  • the mobility management network element notifies the access network to establish a radio bearer.
  • the mobility management network element notifies the access network to establish a bearer between the serving gateway and the serving gateway, and the access network also establishes a radio bearer with the user equipment.
  • the mobility management network element sends an update bearer request message to the serving gateway.
  • the mobility management network element sends an update bearer request message to the serving gateway, and the update bearer request message can be used to establish a downlink data forwarding channel of the PDN connection.
  • the service gateway notifies the data gateway to update the bearer.
  • the serving gateway notifies the data gateway to update the bearer, and if it is switched from the non-3GPP network, the update bearer request message may be used to notify the data gateway to initiate packet forwarding.
  • the service gateway replies to the mobility management network element with an update response message.
  • the mobility management network element sends a message for registering user equipment information to the reset center server.
  • the mobility management network element sends a message for registering the user equipment information to the reset center server, where the message includes the user equipment identifier, the mobility management network element identifier, and other information that may also include the user equipment, such as the tracking area of the user equipment. List, etc.
  • the mobility management network element identifier may be an IP address of the mobility management network element, a global unique number of the mobility management network element, or a node name of the mobility management network element (FullyQualified Domain Name, FQDN, etc.
  • the information of the reset center server may be configured on the mobility management network element. It can also be sent to the mobility management network element through other network elements, such as the HSS, the PCRF, or the network management, and the M&M center.
  • the mobile management network element sends the message to the corresponding reset center server through the information.
  • the reset center server associates with the user equipment identifier, and associates the user equipment information registered by the data gateway with the user equipment information registered by the mobile management network element.
  • the mobility management network element may select the user equipment according to the selection policy, and register the user equipment information to the reset center server. For example, only the information of the PDN-connected user equipment of the IP Multimedia Subsystem (IMS) APN is registered, and only the information of the Very Important People (VIP) is registered.
  • the selection policy can be pre-configured on the mobility management NE or from other NEs such as HSS or PCRF.
  • FIG. 9 is intended to assist those skilled in the art to better understand the implementation of the present invention. For example, it is not intended to limit the scope of the embodiments of the invention. A person skilled in the art will be able to make various modifications or changes in accordance with the example of FIG. 9 which are within the scope of the embodiments of the present invention.
  • step 905 is not limited to step 904.
  • step 911 is not limited to step 910.
  • the service gateway may not notify the data gateway to update the bearer. That is, you can go through step 909. Embodiments of the invention are not limited thereto.
  • the foregoing process is a process of registering user equipment information in a user equipment attach request, a PDN connection establishment request, or a PDP activation process. On this basis, after the network device (data gateway and/or service gateway) is reset, the user equipment's PDN connection is performed. The recovery process will be described below.
  • FIG. 10 is a recovery process of the PDN connection of the user equipment after the data gateway and the service gateway are separately deployed and the data gateway is reset.
  • FIG. 10 is a schematic flowchart of a method of reconstructing a PDN connection according to another embodiment of the present invention. The method shown in Figure 10 includes:
  • the data gateway receives the downlink data packet.
  • the data gateway After the data gateway is reset, the downlink data packet is received, and the data gateway locates the PDN connection context of the user equipment according to the header information of the downlink data packet, such as the destination IP address. Due to the data gateway reset, the data of the PDN connection context previously stored in the data gateway is lost, causing the data gateway to be unable to locate the PDN connection context.
  • the data gateway sends a downlink packet notification message to the reset center server.
  • the data gateway determines whether the downlink data packet is from a trusted APN. If the data packet is from the trusted APN, the data gateway sends a downlink data packet notification message to the reset center server, where the message includes the IP address of the user equipment, that is, the downlink. The destination IP address of the packet. If the downstream packet comes from an untrusted APN, such as an attack from the Internet, the data gateway can discard the packet. In this way, whether the APN is trusted or not can increase network security, for example, to prevent scanning attacks from the Internet.
  • the reset center server sends a downlink data packet notification message to the mobility management network element. Specifically, after receiving the downlink data packet notification message of the data gateway, the reset center server searches for the stored record according to the IP address of the user equipment in the message, and finds the corresponding mobile management network element identifier, and the user equipment identifier and the downlink data packet correspond to Information such as the APN connected to the PDN. Reset center The server sends a downlink data packet notification message to the node corresponding to the mobility management network element identifier, where the message includes the user equipment identifier, and may also include information such as an APN;
  • the mobility management network element After receiving the downlink packet notification message, the mobility management network element queries the locally stored user context according to the user equipment identifier in the message. If the message further includes the APN, the PDN connection context of the corresponding user equipment can be found according to the user equipment identifier and the APN. . Further, the mobility management network element determines, according to the selection policy, which reset PDN connections are restored, such as restoring only the PDN connection corresponding to the IMS APN, restoring all reset PDN connections of the user equipment, and only restoring the reset PDN connection of the VIP user. Policies can be pre-configured on the mobility management network element or from other networks, such as HSS or PCRF.
  • the mobility management network element determines that the information needs to be restored according to the user equipment context or the allocation, the priority (Allocation/Retention Priority, ARP), the QoS Class Identifier (QCI), or the APN in the PDN connection context. PDN connection.
  • ARP Address/Retention Priority
  • QCI QoS Class Identifier
  • the mobility management network element determines, according to the information of the serving gateway and the data gateway in the PDN connection context, whether the PDN connection is established on the unified service gateway and the data gateway, and the specific service gateway and data.
  • the information of the gateway may be the IP address of the service gateway and the data gateway, the FQDN of the service gateway and the data gateway, and the like.
  • the mobility management network element compares the IP addresses of the serving gateway and the data gateway, or compares the FQDNs of the serving gateway and the data gateway. If the IP address or the FQDN is the same, the serving gateway and the data gateway are considered to be unified, otherwise the serving gateway and the data gateway are considered.
  • the PDN connection corresponding to the downlink data packet is established on the separated service gateway and the data gateway.
  • the mobility management network element sends a deactivation request message to the user equipment.
  • the mobility management network element initiates a PDN connection deactivation procedure for the PDN connection that needs to be restored.
  • a deactivation request message is sent to the user equipment to deactivate the reason value of the reactivation request in the request message. Therefore, the user equipment deletes the corresponding PDN connection according to the deactivation request message, and re-initiates the PDN connection establishment process to reestablish the deleted PDN connection.
  • the mobility management network element first pages the user equipment, triggers the user equipment to initiate a service request procedure, and after the user equipment establishes a wireless connection with the access network, the mobility management unit sends a deactivation request again. The message is sent to the user equipment, triggering the PDN connection to deactivate the process.
  • the user equipment sends a deactivation bearer response message to the mobility management network element. Specifically, the user equipment replies to the deactivated bearer request message, and sends a deactivated 7-packet response message to the mobility management network element.
  • the user equipment sends a PDN connection request message to the mobility management network element.
  • the user equipment initiates a PDN connection establishment process, sends a PDN connection request message to the mobility management network element, and re-establishes the deactivated PDN connection.
  • the mobility management network element establishes a PDN connection.
  • the mobility management network element selects a data gateway.
  • the data gateway may be a data gateway after reset, or it may be another data gateway.
  • the mobility management network element sends a setup session request message to the service gateway, where the message includes information such as the IP address of the data gateway. Establish a session between the service gateway and the data gateway, and reply to establish a session response message to the mobility management network element;
  • the mobility management network element notifies the access network to establish a radio bearer, and performs radio resource control (RRC) connection reconfiguration between the access network and the user equipment.
  • RRC radio resource control
  • the user equipment sends a PDN connection setup and receive message to the mobility management network element.
  • the mobility management network element modifies the bearer.
  • the mobility management network element sends a modify bearer request message to the serving gateway, and the modified bearer request message includes user plane information allocated by the access network, and is used to establish a downlink user plane tunnel of the PDN connection.
  • the user plane information allocated by the access network includes information such as the IP address of the access network and the tunnel endpoint identifier.
  • the serving gateway replies to modify the bearer response message to the mobility management network element.
  • the re-establishment of the entire PDN connection is completed by the foregoing process, and the re-selected data gateway of the mobility management network element can forward the received retransmitted downlink data packet, so that the downlink data packet can reach the user equipment in time, which can reduce or avoid User impact, improving user experience.
  • the mobility management network element initiates a separation process, and sends a separation request message to the user equipment, and the separation message carries the cause value of the reattachment request.
  • the method shown in FIG. 11 includes:
  • the data gateway receives the downlink data packet.
  • the data gateway sends a downlink packet notification message to the reset center server.
  • the reset center server sends a downlink data packet notification message to the mobility management network element.
  • step 1101 to step 1103 correspond to step 1001 to step 1003, in order to avoid Repeat, no longer repeat here.
  • the mobility management network element sends a detach request message to the user equipment.
  • the mobility management network element initiates a separation process, and sends a separation request message to the user equipment, where the separation message carries the cause value of the re-attach request, so that the user equipment deletes all PDN connections according to the separation request message, and re-attaches to the network establishment. Activated PDN connection.
  • the mobility management network element first pages the user equipment, triggers the user equipment to initiate a service request procedure, and after the user equipment establishes a wireless connection with the access network, the mobility management network element sends a separate request again. The message is sent to the user equipment, triggering the separation process.
  • the user equipment sends a separation response message to the mobility management network element.
  • the user equipment replies to the detach request message and sends a separate response message to the mobility management network element.
  • the user equipment sends an attach request message to the mobility management network element.
  • the user equipment initiates an attach procedure, and sends an attach request message to the mobility management network element. 1107.
  • the mobility management network element establishes a PDN connection.
  • the mobility management network element selects a serving gateway and a data gateway.
  • the data gateway may be a reset data gateway or another data gateway.
  • the mobility management network element sends a session establishment request message to the service gateway, where the message includes information such as the IP address of the data gateway.
  • a session is established between the serving gateway and the data gateway, and a session response message is replied to the mobility management network element.
  • an initial context establishment is performed between the mobility management network element and the access network
  • RRC connection reconfiguration is performed between the access network and the user equipment.
  • the user equipment replies to the attach accept message to the mobility management network element.
  • the mobility management network element modifies the bearer.
  • the mobility management network element sends a modify bearer request message to the serving gateway, and the modified bearer request message includes user plane information allocated by the access network, and is used to establish a downlink user plane tunnel of the PDN connection.
  • the user plane information allocated by the access network includes information such as the IP address of the access network and the tunnel endpoint identifier.
  • the serving gateway replies to modify the bearer response message to the mobility management network element.
  • the data gateway can forward the received retransmitted downlink data packet, so that the downlink data packet can reach the user equipment in time, which can reduce or avoid the impact on the user and improve the user experience.
  • the example shown in FIG. 10 and FIG. 11 is a case where the mobility management network element is an MME.
  • the mobility management network element is an SGSN
  • all/part of the PDN connection context needs to be restored in the SGSN regardless of the PDN connection context of the user equipment.
  • the SGSN only triggers the PDN connection deletion process.
  • the step 1004 or 1104 is modified to send the deactivated PDP context request message to the SGSN to the user equipment, where the message carries the cause value of the reactivation request.
  • the method shown in FIG. 12 includes:
  • the data gateway receives the downlink data packet.
  • the data gateway sends a downlink packet notification message to the reset center server.
  • the reset center server sends a downlink data packet notification message to the mobility management network element.
  • the steps 1201 to 1203 correspond to the steps 1101 to 1103. To avoid repetition, details are not described herein again.
  • the mobility management network element sends a deactivate PDP context request message to the user equipment.
  • the mobility management network element sends a deactivation PDP context request message to the user equipment, where the message carries the cause value of the reactivation request, so that the user equipment deletes the corresponding PDP context according to the deactivate PDP context request message, and re-initiates the activation.
  • PDP context flow is a deactivate PDP context request message to the user equipment.
  • the mobility management network element first pages the user equipment, triggers the user equipment to initiate a service request procedure, and after the user equipment establishes a wireless connection with the access network, the mobility management unit sends a deactivation request again. The message is sent to the user device.
  • the user equipment sends a deactivate PDP context response message to the mobility management network element.
  • the user equipment sends an activation PDP context request message to the mobility management network element.
  • the mobility management network element establishes a PDN connection.
  • the mobility management network element selects a data gateway.
  • the data gateway may be a data gateway after reset, or it may be another data gateway.
  • the mobility management network element sends a setup session request message to the service gateway, where the message includes information such as the IP address of the data gateway. Establish a session between the service gateway and the data gateway, and reply to establish a session response message to the mobility management network element;
  • a radio access bearer is established between the mobility management network element and the access network, and a radio bearer is established between the access network and the user equipment.
  • the mobility management network element returns an activation PDP context response message to the user equipment. 1210, Mobile management network element ⁇ ' ⁇ changed.
  • the mobility management network element sends a modify bearer request message to the serving gateway, where the modify bearer request message includes user plane information allocated by the access network, and is used to establish a PDN connection. Downstream user plane tunnel.
  • the user plane information allocated by the access network includes information such as the IP address of the access network and the tunnel identifier.
  • the serving gateway replies to modify the bearer response message to the mobility management network element.
  • the re-establishment of the entire PDN connection is completed by the foregoing process, and the re-selected data gateway of the mobility management network element can forward the received retransmitted downlink data packet, so that the downlink data packet can reach the user equipment in time, which can reduce or avoid User impact, improving user experience.
  • Figure 13 is a schematic flow diagram of a method of reconstructing a PDN connection in accordance with another embodiment of the present invention.
  • Figure 13 shows the situation where the data gateway and the service gateway are deployed together. Specifically, the method shown in FIG. 13 includes:
  • the data gateway receives the downlink data packet.
  • the data gateway After the data gateway is reset, the downlink data packet is received, and the data gateway locates the PDN connection context of the user equipment according to the header information of the downlink data packet, such as the destination IP address. Due to the data gateway reset, the data of the PDN connection context previously stored in the data gateway is lost, causing the data gateway to be unable to locate the PDN connection context.
  • the data gateway sends a downlink packet notification message to the reset center server.
  • the data gateway determines whether the downlink data packet is from a trusted APN. If the data packet is from the trusted APN, the data gateway sends a downlink data packet notification message to the reset center server, where the message includes the IP address of the user equipment, that is, the downlink. The destination IP address of the packet. If the downstream packet comes from an untrusted APN, such as an attack from the Internet, the data gateway can discard the packet. In this way, whether the APN is trusted or not can increase network security, for example, to prevent scanning attacks from the Internet.
  • the reset center server sends a downlink data packet notification message to the mobility management network element. Specifically, after receiving the downlink data packet notification message of the data gateway, the reset center server searches for the stored record according to the IP address of the user equipment in the message, and finds the corresponding mobile management network element identifier, and the user equipment identifier and the downlink data packet correspond to Information such as the APN connected to the PDN. The reset center server sends a downlink data packet notification message to the node corresponding to the mobility management network element identifier, where the message includes the user equipment identifier, and may also include information such as APN;
  • the mobility management network element After receiving the downlink data packet notification message, the mobility management network element according to the user equipment identifier in the message Query the locally stored user context. If the message also includes the APN, the PDN connection context of the corresponding user equipment can be found according to the user equipment identifier and the APN. Further, the mobility management network element determines, according to the policy, which reset PDN connections are restored, for example, only recovers the PDN connection corresponding to the IMS APN, restores all reset PDN connections of the user equipment, and restores only the reset PDN connection of the VIP user.
  • the policy can be pre-configured on the mobility management network element or obtained from other networks, such as HSS or PCRF.
  • the mobility management network element determines the PDN connection that needs to be restored according to the user equipment context or information such as ARP, QCI, or APN in the PDN connection context.
  • the mobility management network element determines whether the PDN connection is established in the unified service gateway and the data gateway according to the information of the serving gateway and the data gateway in the PDN connection context, and the specific service gateway and the data gateway.
  • the information may be the IP address of the service gateway and the data gateway, the service gateway, and the FQDN of the data gateway.
  • the PDN connection corresponding to the downlink data packet is established on the unified service gateway and the data gateway.
  • the mobility management network element establishes a session with the serving gateway.
  • the mobility management network element triggers the serving gateway handover procedure, reselects the serving gateway, and sends a setup session request to the new serving gateway.
  • the establishment session request message carries the information of the PDN connection established by the user equipment on other unreset data gateways (such as the data gateway 2).
  • the service gateway modifies the bearer.
  • the serving gateway sends a modify bearer request message to the data gateway 2, updates the downlink tunnel information on the data gateway 2, and establishes a PDN connection between the new service gateway and the data gateway 2.
  • the data gateway replies to modify the bearer response message.
  • the mobility management network element sends a deactivation request message to the user equipment.
  • the mobility management network element initiates a PDN connection deactivation procedure for the PDN connection that needs to be restored.
  • a deactivation request message is sent to the user equipment to deactivate the reason value of the reactivation request in the request message. Therefore, the user equipment deletes the corresponding PDN connection according to the deactivation request message, and initiates a PDN establishment process to reestablish the deactivated PDN connection.
  • the mobility management network element first pages the user equipment, triggers the user equipment to initiate a service request procedure, and after the user equipment establishes a wireless connection with the access network, the mobility management unit sends a deactivation request again.
  • the message is sent to the user equipment, triggering the PDN connection to deactivate the process. 1307.
  • the user equipment sends a deactivation bearer response message to the mobility management network element. Specifically, the user equipment replies to the deactivation request message, and sends a deactivation bearer response message to the mobility management network element.
  • the user equipment sends a PDN connection request message to the mobility management network element.
  • the user equipment initiates a PDN connection establishment process, and the user equipment sends a PDN connection request message to the mobility management network element to re-establish the deactivated PDN connection.
  • the mobility management network element establishes a session.
  • the mobility management network element selects a data gateway.
  • the data gateway may be a data gateway after reset, or it may be another data gateway.
  • the mobility management network element sends a setup session request message to the service gateway, where the message includes information such as the IP address of the data gateway. Establish a session between the service gateway and the data gateway, and reply to establish a session response message to the mobility management network element;
  • the mobility management network element notifies the access network to establish a radio bearer, and performs RRC connection reconfiguration between the access network and the user equipment;
  • the user equipment sends a PDN connection setup and receive message to the mobility management network element.
  • the mobility management network element sends a modify bearer request message to the serving gateway, and the modified bearer request message includes user plane information allocated by the access network, and is used to establish a downlink user plane tunnel of the PDN connection.
  • the user plane information allocated by the access network includes information such as the IP address of the access network and the tunnel endpoint identifier.
  • the re-establishment of the entire PDN connection is completed by the foregoing process, and the re-selected data gateway of the mobility management network element can forward the received retransmitted downlink data packet, so that the downlink data packet can reach the user equipment in time, which can reduce or avoid User impact, improving user experience.
  • the embodiment shown in FIG. 13 is that only part of the PDN connection context is established on the reset data gateway.
  • the recovery process of the PDN connection on the unreset data gateway in the above embodiment is applicable to the mobility management network element being the MME or the SGSN.
  • the mobility management network element is an SGSN
  • the PDN connection deactivation process initiated by the SGSN corresponds to steps 1204 to 1210 for the PDN connection established on the reset data gateway. To avoid repetition, details are not described herein. .
  • the mobility management network element is the SGSN, the mobility management network element initiates a PDN connection deactivation process. The steps correspond to steps 1204 to 1210. To avoid repetition, details are not described herein.
  • Figure 14 is a schematic flow diagram of a method of reconstructing a PDN connection in accordance with another embodiment of the present invention.
  • Figure 14 shows the situation where the service gateway is reset when the data gateway and the service gateway are deployed separately.
  • the method shown in FIG. 14 includes:
  • the data gateway sends a downlink data packet to the serving gateway.
  • the data gateway after receiving the downlink data packet, the data gateway sends the downlink data packet to the serving gateway.
  • the serving gateway sends a failure indication message to the data gateway.
  • the serving gateway After the serving gateway receives the downlink data packet sent by the data gateway, the serving gateway cannot find the user equipment context corresponding to the downlink data packet, and sends an error indication message (Error Indication) message to the data gateway, so that the data gateway knows The service gateway is abnormal.
  • Error Indication error indication message
  • the data gateway can learn the service gateway reset by a reset counter in the signaling message with the serving gateway or with a path detection mechanism between the serving gateway.
  • the data gateway sends a downlink packet notification message to the reset center server.
  • the data gateway obtains the user equipment identifier corresponding to the downlink data packet stored in the PDN connection context by querying the PDN connection context of the user equipment corresponding to the downlink data packet.
  • the data gateway sends a downlink packet notification message to the reset center server, where the message includes the user equipment identifier, and may also include a reset indication, the reset indication indicates that the service gateway is reset, or the recovery triggered by the Error Indication.
  • the reset center server sends a downlink data packet notification message to the mobility management network element.
  • the reset center server After receiving the downlink data packet notification message of the data gateway, the reset center server searches for the stored record according to the user equipment identifier in the message, and finds information such as the corresponding mobility management network element identifier.
  • the reset center server sends a downlink data packet notification message to the node corresponding to the mobility management network element identifier, where the message includes the user equipment identifier, and may also include a reset indication.
  • the mobility management network element After receiving the downlink data packet notification message, the mobility management network element learns that the service gateway is reset, and the mobility management network element learns that the service gateway is reset according to the reset indication included in the message or according to the absence of the APN information in the message.
  • the mobility management network element learns the context of the user equipment corresponding to the downlink data packet according to the user equipment identifier in the message.
  • the mobility management network element initiates a service gateway switching process, and uses To recover the affected PDN connection. Further, the mobility management network element determines whether to initiate a PDN connection recovery process according to the policy, such as an IMS APN in the context of the user equipment, the user being a VIP user, and the like.
  • the policy can be pre-configured on the mobility management NE or from other NEs, such as the O&M Center or the PCRF.
  • the mobility management network element determines the PDN connection that needs to be restored according to information such as ARP, QCI, or APN in the context of the user equipment.
  • the mobility management network element selects a service gateway.
  • the mobility management network element reselects the service gateway, and the service gateway may be a service gateway that resets and restarts, or may be another service gateway, and sends a setup session request message to the service gateway, where the message includes the user equipment that needs to be restored.
  • PDN connection information PDN connection information
  • the service gateway modifies the bearer.
  • the serving gateway sends a modify bearer request message to the data gateway corresponding to the PDN connection, where the message includes a signaling plane and user plane information of the serving gateway;
  • the data gateway replies to modify the bearer response.
  • the data gateway replies to modify the bearer response message, and the PDN connection of the user equipment is re-established between the serving gateway and the data gateway;
  • the monthly service gateway replies to establish a session response.
  • the serving gateway replies to the mobility management network element to establish a session response message, and the context of the user equipment is reconstructed on the newly selected serving gateway.
  • the serving gateway can forward the received downlink data packet, so that the downlink data packet can reach the user equipment in time, which can reduce or avoid the impact on the user and improve the user experience.
  • the mobility management network element may re-establish the PDN connection according to the state of the user equipment.
  • the mobility management network element when the PDN connection is re-established, if the user equipment is in the connected state, the mobility management network element first releases the signaling connection with the user equipment, turns the user equipment into an idle state, and then performs steps 1405-1408.
  • the mobility management network element first performs steps 1405-1408, and then performs these Next steps in the process.
  • the mobility management network element notifies the target side mobile tube
  • the network element needs to perform the process of reselecting the service gateway, and then the actions performed by the mobility management network element in steps 1405-1408 are performed by the target mobility management network element.
  • the mobility management network element rejects the handover request or reassignment request message, turns the user equipment into an idle state, and then performs steps 1405-1408.
  • FIG. 15 is a schematic block diagram of a reset center server in accordance with another embodiment of the present invention.
  • the reset center server 1500 shown in FIG. 15 includes a processor 1510, a memory 1520, a bus system 1530, and a transceiver 1540.
  • Processor 1510, memory 1520 and transceiver 1540 are coupled by bus system 1530.
  • the transceiver 1540 is configured to receive a first message sent by the data gateway, where the first message includes first identifier information of the user equipment, and the processor 1510 is configured to invoke, by using the bus 1530, the code stored in the memory 1520, according to the first The identifier information is used to determine the mobility management network element identifier corresponding to the first identifier information.
  • the transceiver 1540 is further configured to send a second message to the mobility management network element corresponding to the mobility management network element identifier, where the second message includes the user equipment identifier, so as to be moved.
  • the management network element reconstructs the packet data network PDN connection of the user equipment according to the second message.
  • the embodiment of the present invention may, by receiving the first message sent by the data gateway, search for the mobility management network element identifier corresponding to the first identifier information in the stored information according to the first identifier information of the user equipment included in the first message. And the user equipment identifier is sent to the mobility management network element corresponding to the mobility management network element identifier, where the second message includes the user equipment identifier, so that the mobility management network element reestablishes the PDN connection of the packet data network according to the second message, and can be timely Rebuild the affected PDN connections to enhance the user experience.
  • the method disclosed in the foregoing embodiment of the present invention may be applied to the processor 1510 or implemented by the processor 1510.
  • the processor 1510 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 1510 or an instruction in a form of software.
  • the processor 1510 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like. Programmable logic device, discrete gate or transistor logic device, Logical block diagram.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read only memory or an electrically erasable programmable memory, a register, etc. In the storage medium.
  • the storage medium is located in the memory 1520.
  • the processor 1510 reads the information in the memory 1520 and completes the steps of the foregoing method in combination with hardware.
  • the bus system 1530 may include a power bus, a control bus, and a status signal bus in addition to the data bus. Wait. However, for clarity of description, various buses are labeled as bus system 1530 in the figure.
  • the transceiver 1540 is further configured to receive a first registration message that is sent by the data gateway for registering user equipment information, where the first registration message includes an Internet Protocol IP address of the user equipment and a user equipment identifier; Receiving, by the mobile management network element, a second registration message for registering user equipment information, where the second registration message includes an identifier of the mobility management network element and a user equipment identifier; and the processor 1510 sets the Internet Protocol IP address of the user equipment according to the user equipment identifier. Associated with the user equipment identifier and the mobility management network element identifier.
  • the first registration message further includes an access point name APN corresponding to the PDN connection
  • the second message further includes an APN, so that the mobility management network element reestablishes the PDN connection according to the user equipment identifier and the APN.
  • the first identifier information includes an IP address of the user equipment
  • the processor 1510 determines an IP address of the user equipment according to the IP address of the user equipment.
  • the mobility management network element identifier includes at least one of an IP address of the mobility management network element, a global unique number of the mobility management network element, and a node name FQDN of the mobility management network element, where the user equipment identifier includes At least one of an International Mobile Subscriber Identity (IMSI) of the user equipment, a mobile station identification number MSISDN, and an international mobile equipment identity code IMEI.
  • IMSI International Mobile Subscriber Identity
  • MSISDN mobile station identification number
  • IMEI international mobile equipment identity code
  • the reset center server 1600 shown in FIG. 16 includes: a processor 1610, a memory 1620, a bus system 1630, and a transceiver 1640.
  • Processor 1610, memory 1620, and transceiver 1640 are coupled by a bus system 1630.
  • the transceiver 1640 is configured to receive a second message sent by the reset center server, where the second message includes the user equipment identifier, the second message is used to trigger the mobility management network element to reestablish the PDN connection of the user equipment, and the second message is the reset center server.
  • the first message After receiving the first message sent by the data gateway, the first message includes the first identifier information of the user equipment; the processor 1510 is configured to invoke the code stored in the memory 1520 through the bus 1530, and reconstruct the user according to the second message.
  • Device PDN connection includes: a processor 1610, a memory 1620, a bus system 1630, and a transceiver 1640.
  • the embodiment of the present invention may receive the second message sent by the reset center server, where the second message includes the user equipment identifier, the second message is used to trigger the mobility management network element to reconstruct the PDN connection, and the mobile management network element reconstructs the user according to the second message.
  • the PDN connection of the device can rebuild the affected PDN connection in time to improve the user experience.
  • Processor 1610 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the above method may be completed by an integrated logic circuit of hardware in the processor 1610 or an instruction in the form of software.
  • the processor 1610 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like. Programmable logic device, discrete gate or transistor logic device, logic block diagram.
  • the general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in the embodiment of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read only memory or an electrically erasable programmable memory, a register, etc. In the storage medium.
  • the storage medium is located in the memory 1620.
  • the processor 1610 reads the information in the memory 1620 and completes the steps of the foregoing method in combination with hardware.
  • the bus system 1630 may include a power bus, a control bus, and a status signal bus in addition to the data bus. Wait. However, for clarity of description, various buses are labeled as bus system 1630 in the figure.
  • the first identifier information includes an Internet Protocol IP address or a user equipment identifier of the user equipment
  • the transceiver 1640 is further configured to send, to the reset center server, a second registration message for registering information of the user equipment.
  • the second registration message includes the identity of the mobility management network element and User device ID.
  • the transceiver 1640 sends a second registration message for registering information of the user equipment to the reset center server according to the first selection policy, where the first selection policy includes registration to establish an IP multimedia subsystem IMS.
  • the processor 1610 determines, according to the second selection policy, a PDN connection that needs to be re-established, where the second selection policy includes restoring a PDN connection of the IMS APN, or restoring a PDN connection of the VIP user.
  • the second registration message further includes an access point name APN corresponding to the PDN connection of the user equipment, where the correspondence includes an Internet Protocol IP address of the user equipment and/or a user equipment identifier, APN, and mobility management.
  • the second message further includes an APN, and the processor 1610 re-establishes the PDN connection according to the user equipment identifier and the APN.
  • the second message further includes a reset indication, where the reset indication is used to indicate a service gateway reset,
  • the processor 1610 reselects the serving gateway, and sends a setup session request message to the reselected serving gateway through the transceiver 1640.
  • the setup session message includes PDN connection information of the user equipment that needs to be restored, so as to reconstruct the PDN on the reselected serving gateway. connection.
  • the data gateway and the service gateway are jointly deployed, and part of the PDN connections of all PDN connections of the user equipment are established on the reset data gateway, and the processor 1610 restarts when the data gateway is reset.
  • the service gateway is selected, and a setup session request message is sent to the reselected service gateway through the transceiver 1640, and the setup request message carries the information of the PDN connection established by the user equipment on other unreset data gateways, so as to reselect the service gateway.
  • a PDN connection is established with other unreset data gateways, wherein the reselected service gateway is a service gateway that resets the restart, or another service gateway.
  • the data gateway and the service gateway are deployed in a unified manner, and part of the PDN connections of all PDN connections of the user equipment are established on the reset data gateway, and the transceiver 1640 is reset in the case of the data gateway.
  • the user equipment sends a deactivation request message, and deletes the PDN connection on the reset data gateway, so that the user equipment reestablishes the PDN connection.
  • the mobility management network element is an MME
  • the data gateway and the monthly service gateway are deployed in a unified manner, or the data gateway and the service gateway are separately deployed, and all PDN connections of the user equipment are established on the reset data gateway.
  • the transceiver 1640 is used in the case of a data gateway reset
  • the user equipment sends a detach request message, and the detach request message carries the cause value of the re-attach request, so that the user equipment deletes all PDN connections according to the detach request message, and re-initiates the establishment of the PDN request.
  • the mobility management network element is an SGSN
  • the data gateway and the service gateway are jointly deployed, or the data gateway and the service gateway are separately deployed, and all PDN connections of the user equipment are established on the reset data gateway
  • the transceiver 1640 sends a PDP deactivation message to the user equipment, and the PDP deactivation message carries the cause value of the reactivation request, so that the user equipment deletes all PDP connections according to the PDP deactivation message, and re-initiates the activation. PDP request.
  • the data gateway and the service gateway are separately deployed, and part of the PDN connections of all PDN connections of the user equipment are established on the reset data gateway, and in the case that the data gateway is reset, the transceiver 1640 is configured to the user equipment.
  • a deactivation request message is sent, and the PDN connection on the reset data gateway is deleted, so that the user equipment reestablishes the PDN connection.
  • the processor 1610 is further configured to determine, according to the identifier information of the data gateway and the serving gateway, whether the data gateway and the serving gateway are in a unified deployment, where the identifier information of the data gateway and the serving gateway includes data.
  • the user equipment identifier includes at least one of an International Mobile Subscriber Identity (IMSI), a Mobile Station Identity (MSISDN), and an International Mobile Equipment Identity (IMEI) of the user equipment;
  • IMSI International Mobile Subscriber Identity
  • MSISDN Mobile Station Identity
  • IMEI International Mobile Equipment Identity
  • the mobility management network element identifier includes at least one of an IP address of the mobility management network element, a global unique number of the mobility management network element, and a node name FQDN of the mobility management network element.
  • the reset center server 1700 shown in FIG. 17 includes: a processor 1710, a memory 1720, a bus system 1730, and a transceiver 1740.
  • the processor 1710, the memory 1720 and the transceiver 1740 are connected by a bus system 1730.
  • the transceiver 1740 is configured to receive downlink data packets; the processor 1710 is configured to invoke the code stored in the memory 1720 via the bus 1730 to process the data received by the transceiver 1740.
  • the transceiver 1740 is further configured to send a first message to the reset center server, where the first message includes first identifier information of the user equipment, so that the reset center server reestablishes the PDN connection of the user equipment according to the first message. Therefore, the embodiment of the present invention may determine the first message according to the header information of the downlink data packet, where the first message includes the first identifier information of the user equipment, and the data gateway sends the first message to the reset center server, so as to reset the central server. Restore the connection of the PDN, and rebuild the affected PDN connection in time to improve the user experience.
  • the method disclosed in the foregoing embodiments of the present invention may be applied to the processor 1710 or implemented by the processor 1710.
  • the processor 1710 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1710 or an instruction in the form of software.
  • the processor 1710 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like. Programmable logic device, discrete gate or transistor logic device, logic block diagram.
  • the general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in the embodiment of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read only memory or an electrically erasable programmable memory, a register, etc. In the storage medium.
  • the storage medium is located in the memory 1720.
  • the processor 1710 reads the information in the memory 1720 and completes the steps of the foregoing method in combination with hardware.
  • the bus system 1730 may include a power bus, a control bus, and a status signal bus in addition to the data bus. Wait. However, for clarity of description, various buses are labeled as bus system 1730 in the figure.
  • the transceiver 1740 is further configured to send, to the reset center server, a first registration message for registering user equipment information, where the first registration message includes an IP address of the user equipment and a user equipment identifier.
  • the transceiver 1740 sends a first registration message for registering user equipment information to the reset center server according to the selection policy, where the selection policy includes registering PDN connection information of the IMS APN of the user equipment, or VIP PDN connection information.
  • the first registration message further includes an access point name APN corresponding to the PDN connection, and the first message further includes an APN.
  • the processor 1710 is further configured to determine a data gateway reset, and Determining that the downlink data packet is from the trusted APN, and determining the user equipment IP address of the downlink data packet header, where the first identification information includes the IP address of the user equipment.
  • the processor 1710 is further configured to determine a service gateway reset, and determine an identifier of the user equipment corresponding to the downlink data packet by querying a PDN connection context of the user equipment corresponding to the downlink data packet; The identifier of the device determines a first message, where the first identifier information includes an identifier of the user equipment.
  • the first message further includes a reset indication, where the reset indication indicates that the service gateway resets or the service gateway sends a failure indication message to the data gateway, and the failure indication message indicates that the service gateway is reset.
  • the user equipment identifier includes at least one of an International Mobile Subscriber Identity (IMSI), a Mobile Station Identification Number (MSISDN), and an International Mobile Equipment Identity (IMEI) of the user equipment.
  • IMSI International Mobile Subscriber Identity
  • MSISDN Mobile Station Identification Number
  • IMEI International Mobile Equipment Identity
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another The system, or some features can be ignored, or not executed.
  • the mutual coupling or direct connection or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

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Abstract

本发明提供了一种重建PDN连接的方法、复位中心服务器、移动管理网元和数据网关。该方法包括:复位中心服务器接收数据网关发送的第一消息,第一消息中包含第一标识信息。复位中心服务器根据第一标识信息确定与第一标识信息对应的移动管理网元标识。复位中心服务器向与移动管理网元标识对应的移动管理网元发送第二消息,第二消息包含用户设备标识,以便移动管理网元根据第二消息重建用户设备的分组数据网络PDN连接。本发明能够重建因网络设备复位而受影响的PDN连接,提升用户体验。

Description

重建 PDN连接的方法、 复位中心服务器、 移动管理网元和数据网关 技术领域
本发明涉及通信领域, 特别涉及一种重建 PDN连接的方法和复位中心 服务器、 移动管理网元和数据网关。 背景技术
下一代移动通信网络中, 用户设备通过本地的无线接入网络接入, 移动 管理网元负责移动用户设备的位置管理、 连接管理、 安全认证、 网关选择等 功能, 服务网关是用户设备的本地接入网关, 负责接入技术相关的连接管理 和数据转发, 数据网关是用户设备访问外部数据网络的网关。
由于网络设备(服务网关和 /或数据网关)复位后, 该复位的服务网关上 的用户信息和复位的数据网关上的 PDN ( Packet Data Network, 分组数据网 络)连接信息都会丟失。 导致用户的下行数据包到达该复位的网络设备后, 该复位的网络设备由于无法找到具体的用户和 PDN连接信息而丟弃该数据 包。 当该下行数据包对应比较重要的业务时, 如被叫语音呼叫, 网络设备复 位将会导致被叫语音呼叫失败, 降低用户对网络的满意度, 影响用户体验。 发明内容
本发明实施例提供一种重建 PDN连接的方法、 复位中心服务器、 移动 管理网元和数据网关, 能够重建因网络设备复位而受影响的 PDN连接, 提 升用户体验。
第一方面, 提供了一种复位中心服务器, 包括: 第一接收单元, 用于接 收数据网关发送的第一消息,所述第一消息中包含第一标识信息;确定单元, 用于根据所述第一标识信息确定与所述第一标识信息对应的移动管理网元 标识; 发送单元, 用于向与所述移动管理网元标识对应的移动管理网元发送 第二消息, 所述第二消息包含用户设备标识, 以便所述移动管理网元根据所 述第二消息重建所述用户设备的分组数据网络 PDN连接。
结合第一方面, 在第一种可能的实现方式中, 所述第一标识信息包括所 述用户设备的网际协议 IP地址或所述用户设备标识, 所述复位中心服务器 还包括: 第二接收单元, 用于接收所述数据网关发送的用于注册用户设备信 息的第一注册消息, 所述第一注册消息包含所述用户设备的网际协议 IP地 址和所述用户设备标识; 第三接收单元, 用于接收所述移动管理网元发送的 用于注册所述用户设备信息的第二注册消息, 所述第二注册消息包含所述移 动管理网元的标识和所述用户设备标识; 关联单元, 用于根据所述用户设备 标识将所述用户设备的网际协议 IP地址和所述用户设备标识与所述移动管 理网元标识进行关联。
结合第一种可能的实现方式, 在第二种可能的实现方式中, 所述第一注 册消息还包括所述 PDN连接对应的接入点名称 APN, 所述第二消息还包括 所述 APN, 以便所述移动管理网元根据所述用户设备标识和所述 APN重建 所述 PDN连接。
结合第一种或第二种可能的实现方式, 在第三种可能的实现方式中, 在 数据网关复位时, 所述第一标识信息包括所述用户设备的 IP地址, 所述确 定单元才艮据所述用户设备的 IP地址确定与所述用户设备的 IP地址对应的所 述移动管理网元标识和所述用户设备标识。
结合第一种或第二种可能的实现方式, 在第四种可能的实现方式中, 在 服务网关复位时, 所述第一标识信息包括所述用户设备标识。
结合第一方面或第一至第四种可能的实现方式中的任一种可能的实现 方式, 在第五种可能的实现方式中, 所述移动管理网元标识包括所述移动管 理网元的 IP地址、 所述移动管理网元的全球唯一编号和所述移动管理网元 的节点名字 FQDN中的至少一个,所述用户设备标识包括所述用户设备的国 际移动用户识别码 IMSI、 移动台识别号码 MSISDN和国际移动设备身份码 IMEI中的至少一个。
第二方面, 提供了一种移动管理网元, 包括: 接收单元, 用于接收复位 中心服务器发送的第二消息, 所述第二消息包含用户设备标识, 所述第二消 息用于触发所述移动管理网元重建所述 PDN连接, 所述第二消息为所述复 位中心服务器在接收到数据网关发送的第一消息后发送的, 所述第一消息中 包含所述用户设备的第一标识信息; 重建单元, 用于根据所述第二消息重建 所述 PDN连接。
结合第一方面, 在第一种可能的实现方式中, 所述第一标识信息包括所 述用户设备的网际协议 IP地址或所述用户设备标识, 所述移动管理网元还 包括: 发送单元, 用于向所述复位中心服务器发送用于注册用户设备的信息 的第二注册消息, 所述第二注册消息包含所述移动管理网元的标识和所述用 户设备标识。
结合第一种可能的实现方式, 在第二种可能的实现方式中, 所述发送单 元根据第一选择策略向所述复位中心服务器发送用于注册用户设备的信息 的第二注册消息, 其中, 所述第一选择策略包括注册建立 IP多媒体子系统 IMS接入点名称 APN的 PDN连接的用户设备的信息,或注册高等级用户设 备 VIP的信息。
结合第一种或第二种可能的实现方式, 在第三种可能的实现方式中, 所 述重建单元根据第二选择策略确定需要重建的 PDN连接, 其中, 所述第二 选择策略包括恢复 IMS APN的 PDN连接, 或恢复 VIP用户的 PDN连接。
结合第一种至第三种可能的实现方式中的任一种可能的实现方式,在第 四种可能的实现方式中, 所述第二注册消息还包括所述 PDN连接对应的接 入点名称 APN, 所述对应关系包括所述用户设备的网际协议 IP地址和 /或所 述用户设备标识、 所述 APN与所述移动管理网元标识的对应关系, 所述第 二消息还包括所述 APN, 所述重建单元根据所述用户设备标识和所述 APN 重建所述 PDN连接。
结合第二方面或第一至第四种可能的实现方式中的任一种可能的实现 方式, 在第五种可能的实现方式中, 所述第二消息还包括复位指示, 所述复 位指示用于表示所述服务网关复位, 所述重建单元, 重新选择服务网关, 并 向所述重新选择的服务网关发送建立会话请求消息, 所述建立会话消息中包 含需要恢复的用户设备的 PDN连接信息, 以便在所述重新选择的服务网关 上重建所述 PDN连接。
结合第二方面或第一至第四种可能的实现方式中的任一种可能的实现 方式, 在第六种可能的实现方式中, 所述数据网关和服务网关合一部署, 并 且所述用户设备的所有 PDN连接中部分 PDN连接建立在复位的数据网关 上, 所述重建单元, 在所述数据网关复位的情况下, 重新选择服务网关, 向 所述重新选择的服务网关发送建立会话请求消息, 所述建立会话请求消息中 携带所述用户设备建立在其他未复位的数据网关上的 PDN连接的信息, 以 便所述重新选择的服务网关与所述其他未复位的数据网关建立 PDN连接, 其中,所述重新选择的服务网关为复位重启的服务网关,或其他的服务网关。
结合第二方面或第一至第四种可能的实现方式中的任一种可能的实现 方式, 在第七种可能的实现方式中, 所述数据网关和服务网关合一部署, 并 且所述用户设备的所有 PDN连接中部分 PDN连接建立在复位的数据网关 上, 所述重建单元, 在所述数据网关复位的情况下, 向所述用户设备发送去 激活请求消息, 删除所述复位的数据网关上的 PDN连接, 以便所述用户设 备重建所述 PDN连接。
结合第二方面或第一至第四种可能的实现方式中的任一种可能的实现 方式, 在第八种可能的实现方式中, 所述移动管理网元为 MME, 所述数据 网关和服务网关合一部署, 或者所述数据网关和服务网关分开部署, 所述用 户设备的所有 PDN连接建立在复位的数据网关上, 所述重建单元, 在所述 数据网关复位的情况下, 向所述用户设备发送分离请求消息, 所述分离请求 消息中携带重新附着请求的原因值, 以便于所述用户设备根据所述分离请求 消息删除所有 PDN连接, 并重新发起附着流程。
结合第二方面或第一至第四种可能的实现方式中的任一种可能的实现 方式, 在第九种可能的实现方式中, 所述移动管理网元为 SGSN, 所述数据 网关和服务网关合一部署, 或者所述数据网关和服务网关分开部署, 所述用 户设备的所有 PDN连接建立在复位的数据网关上, 所述重建单元, 在所述 数据网关复位的情况下, 向所述用户设备发送 PDP去激活消息, 所述 PDP 去激活消息中携带重新激活请求的原因值, 以便于所述用户设备根据所述 PDP去激活消息删除所有 PDP连接, 并重新发起激活 PDP请求。
结合第二方面或第一至第四种可能的实现方式中的任一种可能的实现 方式, 在第十种可能的实现方式中, 所述数据网关和服务网关分开部署, 所 述用户设备的所有 PDN连接中部分 PDN连接建立在复位的数据网关上, 所 述重建单元, 在所述数据网关复位的情况下, 向所述用户设备发送去激活请 求消息, 删除所述复位的数据网关上的 PDN连接, 以便所述用户设备重建 所述 PDN连接。
结合第二方面的第五至第十种可能的实现方式中的任一种可能的实现 方式, 在第十一种可能的实现方式中, 还包括: 确定单元, 用于根据数据网 关和服务网关的标识信息确定所述数据网关和所述服务网关是否是为合一 部署, 其中所述据数据网关和服务网关的标识信息包括所述数据网关与所述 服务网关的 IP地址, 和 /或所述数据网关与所述服务网关的全域名。
结合第二方面或第一至第十一种可能的实现方式中的任一种可能的实 现方式, 在第十二种可能的实现方式中, 所述用户设备标识包括所述用户设 备的国际移动用户识别码 IMSI、 移动台识别号码 MSISDN和国际移动设备 身份码 IMEI中的至少一个; 所述移动管理网元标识包括所述移动管理网元 的 IP地址、 所述移动管理网元的全球唯一编号和所述移动管理网元的节点 名字 FQDN中的至少一个。
第三方面, 提供了一种数据网关, 包括: 接收单元, 用于接收下行数据 包; 第一发送单元, 用于向复位中心服务器发送第一消息, 所述第一消息中 包含用户设备的第一标识信息, 以便所述复位中心服务器根据所述第一消息 重建所述 PDN连接。
结合第三方面, 在第一种可能的实现方式中, 还包括: 第二发送单元, 用于向所述复位中心服务器发送用于注册用户设备信息的第一注册消息, 所 述第一注册消息包含用户设备的 IP地址和用户设备标识。
结合第一种可能的实现方式, 在第二种可能的实现方式中, 所述第二发 送单元根据选择策略向所述复位中心服务器发送用于注册用户设备信息的 第一注册消息, 其中, 所述选择策略包括注册用户设备的 IMS APN的 PDN 连接信息, 或 VIP的 PDN连接信息。
结合第二种可能的实现方式, 在第三种可能的实现方式中, 所述第一注 册消息还包括所述 PDN连接对应的接入点名称 APN, 所述第一消息还包括 所述 APNo
结合第三方面或第一至第三种可能的实现方式中的任一种可能的实现 方式, 在第四种可能的实现方式中, 还包括: 第一确定单元, 用于确定所述 数据网关复位, 并确定所述下行数据包来自可信的 APN, 并且确定所述下行 数据包头部的用户设备 IP地址, 其中所述第一消息包括所述用户设备的 IP 地址。
结合第三方面或第一至第三种可能的实现方式中的任一种可能的实现 方式, 在第五种可能的实现方式中, 还包括: 第二确定单元, 用于确定服务 网关复位, 并通过查询下行数据包对应的用户设备的 PDN连接上下文, 确 定所述下行数据包对应的用户设备的标识; 其中, 所述第一消息中包括所述 用户设备标识。
结合第五种可能的实现方式, 在第六种可能的实现方式中, 所述第一消 息还包括复位指示, 所述复位指示表示所述服务网关复位或所述服务网关向 所述数据网关发送的失败指示消息, 所述失败指示消息表示所述服务网关复 位。
结合第三方面或第一至第六种可能的实现方式中的任一种可能的实现 方式, 在第七种可能的实现方式中, 所述用户设备标识包括所述用户设备的 国际移动用户识别码 IMSI、 移动台识别号码 MSISDN和国际移动设备身份 码 IMEI中的至少一个。
第四方面, 提供了一种重建分组数据网络 PDN连接的方法, 包括: 复 位中心服务器接收数据网关发送的第一消息,所述第一消息中包含第一标识 信息; 所述复位中心服务器根据所述第一标识信息确定与所述第一标识信息 对应的移动管理网元标识; 所述复位中心月良务器向与所述移动管理网元标识 对应的移动管理网元发送第二消息, 所述第二消息包含用户设备标识, 以便 所述移动管理网元根据所述第二消息重建所述 PDN连接。
结合第四方面, 在第一种可能的实现方式中, 所述第一标识信息包括用 户设备的网际协议 IP地址或所述用户设备标识, 所述方法还包括: 所述复 位中心服务器接收所述数据网关发送的用于注册用户设备信息的第一注册 消息, 所述第一注册消息包含所述用户设备的网际协议 IP地址和所述用户 设备标识; 所述复位中心服务器接收所述移动管理网元发送的用于注册所述 用户设备信息的第二注册消息, 所述第二注册消息包含所述移动管理网元的 标识和所述用户设备标识; 所述复位中心服务器根据所述用户设备标识将所 述用户设备的网际协议 IP地址和所述用户设备标识与所述移动管理网元标 识进行关联。
结合第一种可能的实现方式, 在第二种可能的实现方式中, 所述第一注 册消息还包括所述 PDN连接对应的接入点名称 APN, 所述第二消息还包括 所述 APN, 以便所述移动管理网元根据所述用户设备标识和所述 APN重建 所述 PDN连接。
结合第一种或第二种可能的实现方式, 在第三种可能的实现方式中, 在 数据网关复位时, 所述第一标识信息包括所述用户设备的 IP地址, 所述复 位中心服务器根据所述第一标识信息确定与所述第一标识信息对应的移动 管理网元标识, 包括: 所述复位中心服务器根据所述用户设备的 IP地址确 定与所述用户设备的 IP地址对应的所述移动管理网元标识和所述用户设备 标识。 结合第一种或第二种可能的实现方式, 在第四种可能的实现方式中, 在 服务网关复位时, 所述第一标识信息包括所述用户设备标识。
结合第一方面或第一至第四种可能的实现方式中的任一种可能的实现 方式, 在第五种可能的实现方式中, 所述移动管理网元标识包括所述移动管 理网元的 IP地址、 所述移动管理网元的全球唯一编号和所述移动管理网元 的节点名字 FQDN中的至少一个,所述用户设备标识包括所述用户设备的国 际移动用户识别码 IMSI、 移动台识别号码 MSISDN和国际移动设备身份码 IMEI中的至少一个。
第五方面, 提供了一种重建 PDN连接的方法, 包括: 移动管理网元接 收复位中心服务器发送的第二消息, 所述第二消息包含用户设备标识, 所述 第二消息用于触发所述移动管理网元重建所述 PDN连接, 所述第二消息为 所述复位中心服务器在接收到数据网关发送的第一消息后发送的, 所述第一 消息中包含所述第一标识信息; 所述移动管理网元根据所述第二消息重建所 述 PDN连接。
结合第五方面, 在第一种可能的实现方式中, 所述第一标识信息包括所 述用户设备的网际协议 IP地址或所述用户设备标识, 所述方法还包括: 所 述移动管理网元向所述复位中心服务器发送用于注册用户设备的信息的第 二注册消息, 所述第二注册消息包含所述移动管理网元的标识和所述用户设 备标识。
结合第一种可能的实现方式, 在第二种可能的实现方式中, 所述移动管 理网元向所述复位中心服务器发送用于注册用户设备的信息的第二注册消 息, 包括: 所述移动管理网元根据第一选择策略向所述复位中心服务器发送 用于注册用户设备的信息的第二注册消息, 其中, 所述第一选择策略包括注 册建立 IP多媒体子系统 IMS接入点名称 APN的 PDN连接的用户设备的信 息, 或注册高等级用户设备 VIP的信息。
结合第一种或第二种可能的实现方式, 在第三种可能的实现方式中, 所 述移动管理网元根据所述第二消息重建所述 PDN连接, 包括: 所述移动管 理网元根据第二选择策略确定需要重建的 PDN连接, 其中, 所述第二选择 策略包括恢复 IMS APN的 PDN连接, 或恢复 VIP用户的 PDN连接。
结合第一种至第三种可能的实现方式中的任一种可能的实现方式,在第 四种可能的实现方式中, 所述第二消息还包括所述 APN, 其中, 所述移动管 理网元根据所述第二消息重建所述 PDN连接, 包括: 所述移动管理网元根 据所述用户设备标识和所述 APN重建所述 PDN连接。
结合第五方面或第一至第四种可能的实现方式中的任一种可能的实现 方式, 在第五种可能的实现方式中, 所述第二消息还包括复位指示, 所述复 位指示用于表示所述服务网关复位, 所述移动管理网元根据所述第二消息重 建所述 PDN连接包括: 所述移动管理网元重新选择服务网关, 并向所述重 新选择的服务网关发送建立会话请求消息, 所述建立会话消息中包含需要恢 复的用户设备的 PDN连接信息, 以便在所述重新选择的服务网关上重建所 述 PDN连接。
结合第五方面或第一至第四种可能的实现方式中的任一种可能的实现 方式, 在第六种可能的实现方式中, 所述数据网关和服务网关合一部署, 并 且所述用户设备的所有 PDN连接中部分 PDN连接建立在复位的数据网关 上, 所述移动管理网元根据所述第二消息重建与所述用户设备对应的 PDN 连接, 包括: 在所述数据网关复位的情况下, 所述移动管理网元重新选择服 务网关, 向所述重新选择的服务网关发送建立会话请求消息, 所述建立会话 请求消息中携带所述用户设备建立在其他未复位的数据网关上的 PDN连接 的信息, 以便所述重新选择的服务网关与所述其他未复位的数据网关建立 PDN连接, 其中, 所述重新选择的服务网关为复位重启的服务网关, 或其他 的服务网关。
结合第五方面或第一至第四种可能的实现方式中的任一种可能的实现 方式, 在第七种可能的实现方式中, 所述数据网关和服务网关合一部署, 并 且所述用户设备的所有 PDN连接中部分 PDN连接建立在复位的数据网关 上, 所述移动管理网元根据所述第二消息重建与所述用户设备对应的 PDN 连接, 包括: 在所述数据网关复位的情况下, 所述移动管理网元向所述用户 设备发送去激活请求消息, 删除所述复位的数据网关上的 PDN连接, 以便 所述用户设备重建所述 PDN连接。
结合第五方面或第一至第四种可能的实现方式中的任一种可能的实现 方式, 在第八种可能的实现方式中, 所述移动管理网元为 MME, 所述数据 网关和服务网关合一部署, 或者所述数据网关和服务网关分开部署, 所述用 户设备的所有 PDN连接建立在复位的数据网关上, 所述移动管理网元根据 所述第二消息重建与所述用户设备对应的 PDN连接, 包括: 在所述数据网 关复位的情况下, 所述移动管理网元向所述用户设备发送分离请求消息, 所 述分离请求消息中携带重新附着请求的原因值, 以便于所述用户设备根据所 述分离请求消息删除所有 PDN连接, 并重新发起附着流程。
结合第五方面或第一至第四种可能的实现方式中的任一种可能的实现 方式, 在第九种可能的实现方式中, 所述移动管理网元为 SGSN, 所述数据 网关和服务网关合一部署, 或者所述数据网关和服务网关分开部署, 所述用 户设备的所有 PDN连接建立在复位的数据网关上, 所述移动管理网元根据 所述第二消息重建与所述用户设备对应的 PDN连接, 包括: 在所述数据网 关复位的情况下, 所述移动管理网元向所述用户设备发送 PDP去激活消息, 所述 PDP去激活消息中携带重新激活请求的原因值, 以便于所述用户设备 根据所述 PDP去激活消息删除所有 PDP连接, 并重新发起激活 PDP请求。
结合第五方面或第一至第四种可能的实现方式中的任一种可能的实现 方式, 在第十种可能的实现方式中, 所述数据网关和服务网关分开部署, 所 述用户设备的所有 PDN连接中部分 PDN连接建立在复位的数据网关上, 所 述移动管理网元根据所述第二消息重建与所述用户设备对应的 PDN连接, 包括: 在所述数据网关复位的情况下, 所述移动管理网元向所述用户设备发 送去激活请求消息, 删除所述复位的数据网关上的 PDN连接, 以便所述用 户设备重建所述 PDN连接。
结合第五方面的第五至第十种可能的实现方式中的任一种可能的实现 方式, 在第十一种可能的实现方式中, 还包括: 所述移动管理网元根据数据 网关和服务网关的标识信息确定所述数据网关和所述服务网关是否是为合 一部署, 其中所述据数据网关和服务网关的标识信息包括所述数据网关与所 述服务网关的 IP地址, 和 /或所述数据网关与所述服务网关的全域名。
结合第五方面或第一至第十一种可能的实现方式中的任一种可能的实 现方式, 在第十二种可能的实现方式中, 所述用户设备标识包括所述用户设 备的国际移动用户识别码 IMSI、 移动台识别号码 MSISDN和国际移动设备 身份码 IMEI中的至少一个; 所述移动管理网元标识包括所述移动管理网元 的 IP地址、 所述移动管理网元的全球唯一编号和所述移动管理网元的节点 名字 FQDN中的至少一个。
第六方面, 提供了一种重建 PDN连接的方法, 包括: 数据网关接收下 行数据包; 所述数据网关向复位中心服务器发送第一消息, 所述第一消息中 包含第一标识信息, 以便所述复位中心服务器根据所述第一消息重建所述
PDN连接。
结合第六方面, 在第一种可能的实现方式中, 还包括: 所述数据网关向 所述复位中心服务器发送用于注册用户设备信息的第一注册消息, 所述第一 注册消息包含用户设备的 IP地址和用户设备标识。
结合第一种可能的实现方式, 在第二种可能的实现方式中, 所述数据网 关向所述复位中心服务器发送用于注册用户设备的信息的第一注册消息, 包 括: 所述数据网关根据选择策略向所述复位中心服务器发送用于注册用户设 备信息的第一注册消息,其中, 所述选择策略包括注册用户设备的 IMS APN 的 PDN连接信息, 或 VIP的 PDN连接信息。
结合第二种可能的实现方式,在第三种可能的实现方式中,其特征在于, 所述第一注册消息还包括所述 PDN连接对应的接入点名称 APN, 所述第一 消息还包括所述 APN。
结合第六方面或第一至第三种可能的实现方式中的任一种可能的实现 方式, 在第四种可能的实现方式中, 还包括: 所述数据网关确定所述数据网 关复位; 所述数据网关确定所述下行数据包来自可信的 APN,并且确定所述 下行数据包头部的用户设备 IP地址; 其中, 所述第一消息中包括所述用户 设备的 IP地址。
结合第六方面或第一至第三种可能的实现方式中的任一种可能的实现 方式, 在第五种可能的实现方式中, 还包括: 所述数据网关确定服务网关复 位; 所述数据网关通过查询下行数据包对应的用户设备的 PDN连接上下文, 确定所述下行数据包对应的用户设备的标识; 其中, 所述第一消息中包括所 述用户设备标识。
结合第五种可能的实现方式, 在第六种可能的实现方式中, 所述第一消 息还包括复位指示, 所述复位指示表示所述服务网关复位或所述服务网关向 所述数据网关发送的失败指示消息, 所述失败指示消息表示所述服务网关复 位。
结合第六方面或第一至第六种可能的实现方式中的任一种可能的实现 方式, 在第七种可能的实现方式中, 所述用户设备标识包括所述用户设备的 国际移动用户识别码 IMSI、 移动台识别号码 MSISDN和国际移动设备身份 码 IMEI中的至少一个。 基于上述技术方案, 可以通过复位中心服务器接收数据网关发送的第一 消息,根据第一消息中包含的第一标识信息查找已存储的信息中与第一标识 信息对应的移动管理网元标识, 并向与移动管理网元标识对应的移动管理网 元发送第二消息, 第二消息包含用户设备标识, 以便移动管理网元根据第二 消息能够及时的重建受影响的分组数据网络 PDN连接, 提升用户体验。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对本发明实施例中 所需要使用的附图作简单地介绍, 显而易见地, 下面所描述的附图仅仅是本 发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的 前提下, 还可以根据这些附图获得其他的附图。
图 1是可应用于本发明实施例的通信网络场景的示意图。
图 2是根据本发明一个实施例的复位中心服务器的示意框图。
图 3是根据本发明另一实施例的复位中心服务器的示意框图。
图 4是根据本发明一个实施例的移动管理网元的示意框图。
图 5是根据本发明一个实施例的数据网关的示意框图。
图 6是根据本发明一个实施例的重建 PDN连接的方法的示意性流程图。 图 7是根据本发明另一实施例的重建 PDN连接的方法的示意性流程图。 图 8是根据本发明另一实施例的重建 PDN连接的方法的示意性流程图。 图 9是根据本发明一个实施例的注册用户设备信息的流程图。
图 10是根据本发明另一实施例的重建 PDN连接的方法的示意性流程 图。
图 11 是根据本发明另一实施例的重建 PDN连接的方法的示意性流程 图。
图 12是根据本发明另一实施例的重建 PDN连接的方法的示意性流程 图。
图 13是根据本发明另一实施例的重建 PDN连接的方法的示意性流程 图。
图 14是根据本发明另一实施例的重建 PDN连接的方法的示意性流程 图。
图 15是根据本发明一个实施例的复位中心服务器的示意框图。 图 16是根据本发明另一实施例的移动管理网元的示意框图。 图 17是根据本发明一个实施例的数据网关的示意框图。 具体实施方式
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的一部分实施例, 而不 是全部实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出创 造性劳动的前提下所获得的所有其他实施例, 都应属于本发明保护的范围。
应理解, 本发明实施例的技术方案可以应用于各种通信系统, 例如: 全 球移动通讯 ( Global System of Mobile communication, GSM ) 系统、 码分多 址( Code Division Multiple Access , CDMA )系统、 宽带码分多址( Wideband Code Division Multiple Access , WCDMA )系统、通用分组无线业务( General Packet Radio Service, GPRS )系统、 长期演进( Long Term Evolution, LTE ) 系统、 通用移动通信系统 ( Universal Mobile Telecommunication System , UMTS ) 或全球互联敖波接入 ( Worldwide Interoperability for Microwave Access , WiMAX )通信系统等。
图 1是可应用于本发明实施例的通信网络场景的示意图。如图 1所示的 移动通信网络的逻辑架构包括: 用户设备 110、 接入网 120、 移动管理网元 130、 服务网关 140、 数据网关 150和报文数据网络 160。 用户设备 110通过 本地的无线网络或有限网络连接接入网 120, 移动管理网元 130负责用户设 备 110的位置管理、 连接管理、 安全认证、 网关选择等功能, 服务网关 140 是用户设备 110的本地接入网关,负责接入技术相关的连接管理和数据转发, 数据网关 150是用户设备访问外部报文数据网络 160的网关。
上述逻辑架构图对应实际网络,可以是演进的分组系统( Evolved Packet System, EPS )网络,接入网可以为 UTRAN ( Universal Terrestrial Radio Access Network , 通用陆地无线接入网络)、 GERAN ( GSM EDGE Radio Access Network , GSM/EDGE 无线接入网络) 或 E-UTRAN ( Evolved Universal Terrestrial Radio Access Network, 演进通用陆地无线接入网络), 移动管理网 元可以是移动性管理实体 ( Mobility Management Entity, MME )或者 GPRS 服务支撑节点 ( Serving GPRS Support Node , SGSN ), 服务网关可以是服务 网关( Serving Gateway, S-GW ),数据网关可以是报文数据网络网关( Packet Data Network Gateway, PDN-GW )。
应理解, 本发明实施例中的数据网关和服务网关可以部署在一起, 也可 以分开部署, 本发明实施例并不对此做限定。 本发明实施例主要针对数据网 关复位和 /或服务网关复位后重建 PDN连接的情形。
具体地, 图 2是根据本发明一个实施例的复位中心服务器的示意框图。 如图 2的复位中心服务器 200包括: 第一接收单元 210、 确定单元 220和发 送单元 230。
第一接收单元 210, 用于接收数据网关发送的第一消息, 第一消息中包 含用户设备的第一标识信息。
确定单元 220, 用于根据第一标识信息确定与第一标识信息对应的移动 管理网元标识。
发送单元 230, 用于向与移动管理网元标识对应的移动管理网元发送第 二消息, 第二消息包含用户设备标识, 以便移动管理网元根据第二消息重建 用户设备的分组数据网络 PDN连接。
因此, 本发明实施例可以通过接收数据网关发送的第一消息, 根据第一 消息中包含的用户设备的第一标识信息查找已存储的信息中与第一标识信 息对应的移动管理网元标识和用户设备标识, 并向与移动管理网元标识对应 的移动管理网元发送第二消息, 第二消息包含用户设备标识, 以便移动管理 网元根据第二消息重建分组数据网络 PDN连接, 能够及时的重建受影响的 PDN连接, 提升用户体验。
具体地, 在完成注册用户设备信息后, 当网络设备(数据网关和 /或服务 网关)复位后, 在数据网关接收到下行数据包后, 数据中心复位中心服务器 接收数据网关发送的第一消息, 第一消息中包含用户设备的第一标识信息, 之后数据中心服务器根据第一标识信息查找在注册用户设备信息时已存储 的信息中与第一标识信息对应的移动管理网元标识和用户设备标识, 并向与 移动管理网元标识对应的移动管理网元发送第二消息, 第二消息包含用户设 备标识, 以便移动管理网元根据第二消息重建分组数据网络 PDN连接, 实 现因网络设备(数据网关和 /或服务网关)复位而受影响的 PDN连接的恢复。
因此, 本发明实施例可以通过复位中心服务器接收数据网关发送的第一 消息,根据第一消息中包含的用户设备的第一标识信息查找已存储的信息中 与第一标识信息对应的移动管理网元标识和用户设备标识, 并向与移动管理 网元标识对应的移动管理网元发送第二消息, 第二消息包含用户设备标识, 以便移动管理网元根据第二消息重建分组数据网络 PDN连接, 能够及时的 重建受影响的 PDN连接, 提升用户体验。
应理解, 本发明实施例中的复位中心服务器可以为独立部署的逻辑实 体, 也可以为与网络内其他网元合设在一起, 例如, 可以为家乡用户寄存器 ( Home Subscriber Server, HSS ), 或者策略和计费规则功能 (Policy and Charging Rules Function , PCRF )等设备。 复位中心服务器的信息可以配置 在数据网关上, 也可以通过其他网元配置, 如 HSS, 或者 PCRF, 或者网管 操作维护 O&M ( Operation and Maintenance ) 中心下发给数据网关。 数据网 关通过该信息向对应的复位中心服务器发送消息。
可以釆用下面的常规方案来重建由于节点复位而受影响的用户 /PDN 连 接的信息, 使得下行数据包可以发送给用户设备的方法如下:
在服务网关复位时的重建方法如下, 方法 1, 移动管理网元获知服务网 关复位后, 对于受影响的用户设备, 移动管理网元重新选择服务网关, 并且 发起服务网关切换流程, 在选择的服务网关上重新建立用户设备的上下文。 而数据网关获知服务网关复位后, 保留受服务网关复位影响的 PDN连接上 下文一段时间, 等候移动管理网元选择的服务网关向数据网关更新下行隧道 信息。 方法 2. 当数据网关获知服务网关复位后, 如果收到受复位服务网关 影响的用户设备的下行数据包, 数据网关选择服务网关, 并向该服务网关发 送下行数据包通知消息。服务网关将该下行数据包通知消息转发给移动管理 网元, 移动管理网元重新选择服务网关并执行服务网关切换流程, 在选择的 服务网关上重新建立用户的上下文。 然而, 上述两个方法中, 服务网关复位 的重建方法一依赖移动管理网元探测服务网关复位后, 再触发恢复。 而复位 探测机制可能不及时, 导致部分用户设备的下行数据不可达。 方法二需要由 数据网关发送下行数据包通知消息触发恢复, 而实际网络中, 大多数情况下 服务网关和数据网关为合一部署, 当服务网关复位时, 数据网关也复位了, 数据网关无法实现方法二中的恢复机制。
在数据网关复位时的重建方法如下, 当服务网关获知数据网关复位后, 服务网关发送数据网关复位通知消息给移动管理网元, 消息中包含数据网关 的网际协议( Internet Protocol, 简称: IP地址 )和服务网关的 IP地址。 移动 管理网元收到消息后, 才艮据数据网关的 IP地址和月良务网关的 IP地址扫描相 关的 PDN连接, 并且发起 PDN连接删除 /用户分离流程触发用户设备重建 PDN连接。 然而,数据网关复位的恢复方法依赖于服务网关探测数据网关复 位后, 再触发恢复。 同样存在探测机制不及时的问题, 还依赖于服务网关获 知数据网关复位后扫描内部受影响的 PDN连接的时间, 在服务网关获知数 据网关复位之前, 可能有用户设备的下行数据包遭到了丟弃。 同样对于服务 网关和数据网关合一部署的情况,当数据网关复位时,服务网关也已经复位, 服务网关无法实现数据网关复位的恢复方法。
以上在服务网关复位和数据网关复位时的重建方法中, 需要用户等待较 长时间, 不能使下行数据包及时到达用户设备, 影响用户体验, 例如语音呼 叫中会导致用户设备较长时间无法进行被叫业务, 影响用户设备的业务体 验, 主叫会因为多次尝试联系被叫未果而对网络以及业务的满意度降低。 而 本发明实施例中,在数据网关和 /或服务网关复位时,可以通过复位中心服务 器接收数据网关发送的第一消息, 第一消息中包含用户设备的第一标识信 息; 根据第一标识信息查找已存储的信息中与第一标识信息对应的移动管理 网元标识和用户设备标识, 并向与移动管理网元标识对应的移动管理网元发 送第二消息, 第二消息包含用户设备标识, 以触发移动管理网元根据第二消 息重建分组数据网络 PDN连接, 能够及时的重建受影响的 PDN连接, 使得 下行数据包能够及时的到达用户设备,减低用户的等待时间,提升用户体验。
可选地, 作为另一实施例, 如图 3所示, 本发明实施例的复位中心服务 器包括: 第一接收单元 310、 确定单元 320、 发送单元 330、 第二接收单元 340、 第三接收单元 350和关联单元 360。
具体地, 第一接收单元 310、 确定单元 320和发送单元 330分别能够实 现对应于图 2中的第一接收单元 210、确定单元 220和发送单元 230的功能, 为避免重复, 不再详述。 第二接收单元 340用于接收数据网关发送的用于注 册用户设备信息的第一注册消息,第一注册消息包含用户设备的网际协议 IP 地址和用户设备标识; 第三接收单元 350用于接收移动管理网元发送的用于 注册用户设备信息的第二注册消息, 第二注册消息包含移动管理网元的标识 和用户设备标识; 关联单元 360用于根据用户设备标识将用户设备的网际协 议 IP地址和用户设备标识与移动管理网元标识进行关联。
换句话说,本发明实施例在数据网关和 /或服务网关复位之前需要完成用 户设备的注册过程, 将 PDN的相关信息注册到复位中心服务器, 具体地, 复位中心服务器可以接收数据网关发送的用于注册用户设备信息的第一注 册消息, 第一注册消息包含用户设备的网际协议 IP地址和用户设备标识; 复位中心服务器接收移动管理网元发送的用于注册用户设备信息的第二注 册消息, 第二注册消息包含移动管理网元的标识和用户设备标识; 之后, 复 位中心服务器根据用户设备标识将数据网关和移动管理网元进行关联,将与 该 PDN连接的相关节点信息——对应起来。
可选地, 作为另一实施例, 第一注册消息还包括 PDN连接对应的接入 点名称 APN, 第二消息还包括 APN, 以便移动管理网元根据用户设备标识 和 APN重建 PDN连接。
可选地, 作为另一实施例, 在数据网关复位或数据网关和服务网关同时 复位时, 第一标识信息包括用户设备的 IP地址, 确定单元 220根据用户设 备的 IP地址确定与用户设备的 IP地址对应的移动管理网元标识和用户设备 标识。
可选地, 作为另一实施例, 在服务网关复位时, 第一标识信息包括用户 设备标识。
可替代地, 在服务网关复位时, 第一标识信息包括用户设备标识。
可选地, 作为另一实施例, 移动管理网元标识包括移动管理网元的 IP 地址、移动管理网元的全球唯一编号和移动管理网元的节点名字 FQDN中的 至少一个, 用户设备标识包括用户设备的国际移动用户识别码 IMSI、 移动 台识别号码 MSISDN和国际移动设备身份码 IMEI中的至少一个。
图 4是根据本发明一个实施例的移动管理网元的示意框图。如图 4所示 的移动管理网元 400包括: 接收单元 410和重建单元 420。
具体地, 接收单元 410用于接收复位中心服务器发送的第二消息, 第二 消息包含用户设备标识, 第二消息用于触发移动管理网元重建用户设备的 PDN连接,第二消息为复位中心服务器在接收到数据网关发送的第一消息后 发送的, 第一消息中包含用户设备的第一标识信息; 重建单元 420用于根据 第二消息重建用户设备的 PDN连接。
因此, 本发明实施例可以通过接收复位中心服务器发送的第二消息, 第 二消息包含用户设备标识, 第二消息用于触发移动管理网元重建 PDN连接; 移动管理网元根据第二消息重建用户设备的 PDN连接, 能够及时的重建受 影响的 PDN连接, 提升用户体验。 可选地, 作为另一实施例, 第一标识信息包括用户设备的网际协议 IP 地址或用户设备标识, 移动管理网元还包括: 发送单元 430。
具体地发送单元 430用于向复位中心服务器发送用于注册用户设备的信 息的第二注册消息, 第二注册消息包含移动管理网元的标识和用户设备标 识。
换句话说,本发明实施例在数据网关和 /或服务网关复位之前需要完成用 户设备的注册过程, 将 PDN的相关信息注册到复位中心服务器, 具体地, 移动管理注册用户设备信息包括: 移动管理网元向复位中心服务器发送用用 于注册用户设备的信息的第二注册消息, 第二注册消息包含移动管理网元的 标识和用户设备标识。
可选地, 作为另一实施例, 发送单元 430根据第一选择策略向复位中心 服务器发送用于注册用户设备的信息的第二注册消息, 其中, 第一选择策略 包括注册建立 IP多媒体子系统 IMS接入点名称 APN的 PDN连接的用户设 备的信息, 或注册高等级用户设备 VIP的信息。
应理解, 用户设备标识可以包括用户设备的国际移动用户识别码 IMSI、 移动台识别号码 MSISDN和国际移动设备身份码 IMEI中的至少一个。 移动 管理网元标识可以包括移动管理网元的 IP地址、 移动管理网元的全球唯一 编号和移动管理网元的节点名字 FQDN中的至少一个。
可选地, 作为另一实施例, 重建单元 420根据第二选择策略确定需要重 建的 PDN连接, 其中, 第二选择策略包括恢复 IMS APN的 PDN连接, 或 恢复 VIP用户的 PDN连接。
可选地, 作为另一实施例, 第二注册消息还包括用户设备的 PDN连接 对应的接入点名称 APN, 对应关系包括用户设备的网际协议 IP地址和 /或用 户设备标识、 APN与移动管理网元标识的对应关系, 第二消息还包括 APN, 重建单元 420根据用户设备标识和 APN重建 PDN连接。
可选地, 作为另一实施例, 第二消息还包括复位指示, 复位指示用于表 示服务网关复位, 重建单元 420重新选择服务网关, 并向重新选择的服务网 关发送建立会话请求消息,建立会话消息中包含需要恢复的用户设备的 PDN 连接信息, 以便在重新选择的服务网关上重建 PDN连接。
其中, 重新选择的服务网关为复位重启的服务网关或其他的服务网关。 进一步地, 在实际应用中, 移动管理网元可以根据用户设备的状态进行重建 PDN连接。
具体地, 在进行重建 PDN连接时, 如果用户设备正处于与移动管理网 元的连接状态, 则移动管理网元首先释放和用户设备间的信令连接, 将用户 设备转为空闲状态, 然后移动管理网元重新选择服务网关, 并向重新选择的 服务网关发送建立会话请求消息,建立会话消息中包含需要恢复的用户设备 的 PDN连接信息, 以便在重新选择的服务网关上重建 PDN连接。
可替代地, 如果用户设备正在发起服务请求、 移动管理网元不变的跟踪 区域更新或移动管理网元不变的路由区域更新流程, 则移动管理网元先执行 重新选择服务网关, 并向重新选择的服务网关发送建立会话请求消息, 建立 会话消息中包含需要恢复的用户设备的 PDN连接信息, 以便在重新选择的 服务网关上重建 PDN连接, 然后移动管理网元再执行后续的发起服务请求、 移动管理网元不变的跟踪区域更新或移动管理网元不变的路由区域更新流 程。
可替代地,如果用户设备正在发起移动管理网元改变的跟踪区域更新或 移动管理网元改变的路由区域更新流程, 则移动管理网元通知目标侧移动管 理网元需要执行重选服务网关的流程, 由目标移动管理网元重新选择服务网 关, 并向重新选择的服务网关发送建立会话请求消息, 建立会话消息中包含 需要恢复的用户设备的 PDN连接信息, 以便在重新选择的服务网关上重建 PDN连接。
可替代地, 如果用户设备正在进行切换流程, 移动管理网元拒绝切换请 求或重分配请求消息, 将用户设备转为空闲状态, 然后移动管理网元重新选 择服务网关, 并向重新选择的服务网关发送建立会话请求消息, 建立会话消 息中包含需要恢复的用户设备的 PDN连接信息, 以便在重新选择的服务网 关上重建 PDN连接。
可选地, 作为另一实施例, 数据网关和服务网关合一部署, 并且用户设 备的所有 PDN连接中部分 PDN连接建立在复位的数据网关上,
重建单元 420在数据网关复位的情况下, 重新选择服务网关, 向重新选 择的服务网关发送建立会话请求消息, 建立会话请求消息中携带用户设备建 立在其他未复位的数据网关上的 PDN连接的信息, 以便重新选择的服务网 关与其他未复位的数据网关建立 PDN连接, 其中, 重新选择的服务网关为 复位重启的服务网关, 或其他的服务网关。 可替代地, 作为另一实施例, 数据网关和服务网关合一部署, 并且用户 设备的所有 PDN连接中部分 PDN连接建立在复位的数据网关上,
重建单元 420在数据网关复位的情况下, 向用户设备发送去激活请求消 息, 删除复位的数据网关上的 PDN连接, 以便用户设备重建 PDN连接。
可替代地, 作为另一实施例, 移动管理网元 400为 MME, 数据网关和 服务网关合一部署, 或者数据网关和服务网关分开部署, 用户设备的所有 PDN连接建立在复位的数据网关上, 重建单元 420在数据网关复位的情况 下, 向用户设备发送分离请求消息, 分离请求消息中携带重新附着请求的原 因值, 以便于用户设备根据分离请求消息删除所有 PDN连接, 并重新发起 建立 PDN请求。
可替代地, 作为另一实施例, 移动管理网元 400为 SGSN, 数据网关和 服务网关合一部署, 或者数据网关和服务网关分开部署, 用户设备的所有 PDN连接建立在复位的数据网关上, 重建单元 420在数据网关复位的情况 下, 向用户设备发送 PDP去激活消息, PDP去激活消息中携带重新激活请 求的原因值, 以便于用户设备根据 PDP去激活消息删除所有 PDP连接, 并 重新发起激活 PDP请求。
可选地, 作为另一实施例, 数据网关和服务网关分开部署, 用户设备的 所有 PDN连接中部分 PDN连接建立在复位的数据网关上,
重建单元 420在数据网关复位的情况下, 向用户设备发送去激活请求消 息, 删除复位的数据网关上的 PDN连接, 以便用户设备重建 PDN连接。
可选地, 作为另一实施例, 本发明实施例的移动管理网元还包括: 确定 单元 440。
具体地,确定单元 440用于根据数据网关和服务网关的标识信息确定数 据网关和服务网关是否是为合一部署, 其中据数据网关和服务网关的标识信 息包括数据网关与服务网关的 IP地址,和 /或数据网关与服务网关的全域名。
可选地, 作为另一实施例, 用户设备标识包括用户设备的国际移动用户 识别码 IMSI、 移动台识别号码 MSISDN和国际移动设备身份码 IMEI中的 至少一个; 移动管理网元标识包括移动管理网元的 IP地址、 移动管理网元 的全球唯一编号和移动管理网元的节点名字 FQDN中的至少一个。
图 5是根据本发明一个实施例的数据网关的示意框图。如图 5所示的数 据网关 500包括: 接收单元 510和第一发送单元 520。 具体地, 接收单元 510用于接收下行数据包; 第一发送单元 520用于向 复位中心服务器发送第一消息, 第一消息中包含用户设备的第一标识信息, 以便复位中心服务器根据第一消息重建用户设备的 PDN连接。
因此, 本发明实施例可以通过根据下行数据包的头部信息确定第一消 息, 第一消息中包含用户设备的第一标识信息, 数据网关向复位中心服务器 发送第一消息, 以便复位中心服务器进行恢复 PDN的连接, 能够及时的重 建受影响的 PDN连接, 提升用户体验。
可选地, 作为另一实施例, 本发明实施例的数据网关还包括第二发送单 元 530。
具体地, 第二发送单元 530用于向复位中心服务器发送用于注册用户设 备信息的第一注册消息, 第一注册消息包含用户设备的 IP地址和用户设备 标识。
换句话说,本发明实施例在数据网关和 /或服务网关复位之前需要完成用 户设备的注册过程, 将原 PDN的相关信息注册到复位中心服务器, 具体地, 数据网关注册用户设备信息包括: 数据网关向复位中心服务器发送用于注册 用户设备的信息的第一注册消息, 第一注册消息包含用户设备的 IP地址和 用户设备标识。
具体地,数据网关可以根据选择策略向复位中心服务器发送用于注册用 户设备信息的第一注册消息, 其中, 选择策略包括注册用户设备的 IP多媒 体子系统 IMS接入点名称 APN的 PDN连接信息、注册高等级用户设备 VIP 的 PDN连接信息或用户设备的所有复位 PDN连接。
可选地, 作为另一实施例, 第二发送单元 530根据选择策略向复位中心 服务器发送用于注册用户设备信息的第一注册消息, 其中, 选择策略包括注 册用户设备的 IMS APN的 PDN连接信息, 或 VIP的 PDN连接信息。 用户 设备标识包括用户设备的国际移动用户识别码 IMSI、 移动台识别号码 MSISDN和国际移动设备身份码 IMEI中的至少一个。
可选地, 作为另一实施例, 第一注册消息还包括 PDN连接对应的接入 点名称 APN, 第一消息还包括 APN。
可选地, 作为另一实施例, 本发明实施例的数据网关还包括: 第一确定 单元 540.
具体地, 第一确定单元 540用于确定数据网关复位, 并确定下行数据包 来自可信的 APN, 并且确定下行数据包头部的用户设备 IP地址, 其中第一 标识信息包括用户设备的 IP地址。
可选地, 作为另一实施例, 本发明实施例的数据网关还包括: 第二确定 单元 550。
具体地, 第二确定单元 550用于确定服务网关复位, 并通过查询下行数 据包对应的用户设备的 PDN连接上下文, 确定下行数据包对应的用户设备 的标识; 根据用户设备的标识确定第一消息, 其中, 第一标识信息包括用户 设备的标识。
具体地, 数据网关通过信令消息中的复位计数器, 或者路径探测机制获 知服务网关复位。 或者数据网关将下行数据包发送给服务网关, 服务网关 因为找不到下行数据包对应的用户设备信息, 所以发送失败指示 (Error Indication ) 消息给数据网关, 进而数据网关获知服务网关出现异常;
可选地, 作为另一实施例, 第一消息还包括复位指示, 复位指示表示服 务网关复位或服务网关向数据网关发送的失败指示消息, 失败指示消息表示 服务网关复位。
可选地, 作为另一实施例, 用户设备标识包括用户设备的国际移动用户 识别码 IMSI、 移动台识别号码 MSISDN和国际移动设备身份码 IMEI中的 至少一个。
下面将结合图 6从复位中心服务器的角度, 结合图 7从移动管理网元的 角度, 结合图 8从数据网关的角度描述本发明实施例的重建 PDN连接的方 法。
图 6是根据本发明一个实施例的重建 PDN连接的方法的示意性流程图。 图 6所示的方法由复位中心服务器执行, 如图 6所示方法包括:
610, 复位中心服务器接收数据网关发送的第一消息, 第一消息中包含 第一标识信息。
具体地,数据网关接收到下行数据包后,确定数据网关和 /或服务网关复 位, 数据网关向复位中心服务器发送第一消息。
620, 复位中心服务器根据第一标识信息确定与第一标识信息对应的移 动管理网元标识。
具体地, 复位中心服务器可以查找之前用户设备信息注册时存储的信息 中与第一标识信息匹配的移动管理网元标识。 630, 复位中心服务器向与移动管理网元标识对应的移动管理网元发送 第二消息, 第二消息包含用户设备标识, 以便移动管理网元根据第二消息重 建用户设备的分组数据网络 PDN连接。
具体地, 在完成注册用户设备信息后, 当网络设备(数据网关和 /或服务 网关)复位后, 在数据网关接收到下行数据包后, 复位中心服务器接收数据 网关发送的第一消息, 第一消息中包含第一标识信息, 之后复位中心服务器 根据第一标识信息查找在注册用户设备信息时已存储的信息中与第一标识 信息对应的移动管理网元标识, 并向与移动管理网元标识对应的移动管理网 元发送第二消息, 第二消息包含用户设备标识, 以便移动管理网元根据第二 消息重建分组数据网络 PDN连接, 实现因网络设备(数据网关和 /或服务网 关)复位而受影响的 PDN连接的恢复。
因此, 本发明实施例可以通过复位中心服务器接收数据网关发送的第一 消息,根据第一消息中包含的第一标识信息查找已存储的信息中与第一标识 信息对应的移动管理网元标识, 并向与移动管理网元标识对应的移动管理网 元发送第二消息, 第二消息包含用户设备标识, 以便移动管理网元根据第二 消息重建分组数据网络 PDN连接, 能够及时的重建受影响的 PDN连接, 提 升用户体验。
应理解, 本发明实施例中的复位中心服务器可以为独立部署的逻辑实 体, 也可以为与网络内其他网元合设在一起, 例如, 可以为家乡用户寄存器 ( Home Subscriber Server, HSS ), 或者策略和计费规则功能 (Policy and Charging Rules Function , PCRF )等设备。 复位中心服务器的信息可以配置 在数据网关上, 也可以通过其他网元配置, 如 HSS, 或者 PCRF, 或者网管 操作维护 O&M ( Operation and Maintenance ) 中心下发给数据网关。 数据网 关通过该信息向对应的复位中心服务器发送消息。
已有方案来重建由于节点复位而受影响的用户 /PDN连接的信息, 使得 下行数据包可以发送给用户设备的方法如下:
在服务网关复位时的重建方法如下, 方法 1, 移动管理网元获知服务网 关复位后, 对于受影响的用户设备, 移动管理网元重新选择服务网关, 并且 发起服务网关切换流程, 在选择的服务网关上重新建立用户设备的上下文。 而数据网关获知服务网关复位后, 保留受服务网关复位影响的 PDN连接上 下文一段时间, 等候移动管理网元选择的服务网关向数据网关更新下行隧道 信息。 方法 2. 当数据网关获知服务网关复位后, 如果收到受复位服务网关 影响的用户设备的下行数据包, 数据网关选择服务网关, 并向该服务网关发 送下行数据包通知消息。服务网关将该下行数据包通知消息转发给移动管理 网元, 移动管理网元重新选择服务网关并执行服务网关切换流程, 在选择的 服务网关上重新建立用户的上下文。 然而, 上述两个方法中, 服务网关复位 的重建方法 1依赖移动管理网元探测服务网关复位后, 再触发恢复。 而复位 探测机制可能不及时, 导致部分用户设备的下行数据不可达。 方法 2需要由 数据网关发送下行数据包通知消息触发恢复, 而实际网络中, 大多数情况下 服务网关和数据网关为合一部署, 当服务网关复位时, 数据网关也复位了, 数据网关无法实现方法二中的恢复机制。
在数据网关复位时的重建方法如下, 当服务网关获知数据网关复位后, 服务网关发送数据网关复位通知消息给移动管理网元, 消息中包含数据网关 的网际协议( Internet Protocol, 简称: IP地址)和服务网关的 IP地址。 移动 管理网元收到消息后, 才艮据数据网关的 IP地址和月良务网关的 IP地址扫描相 关的 PDN连接, 并且发起 PDN连接删除 /用户分离流程触发用户设备重建 PDN连接。 然而,数据网关复位的恢复方法依赖于服务网关探测数据网关复 位后, 再触发恢复。 同样存在探测机制不及时的问题, 还依赖于服务网关获 知数据网关复位后扫描内部受影响的 PDN连接的时间, 在服务网关获知数 据网关复位之前, 可能有用户设备的下行数据包遭到了丟弃。 同样对于服务 网关和数据网关合一部署的情况,当数据网关复位时,服务网关也已经复位, 服务网关无法实现数据网关复位的恢复方法。
以上在服务网关复位和数据网关复位时的重建方法中, 需要用户等待较 长时间, 不能使下行数据包及时到达用户设备, 影响用户体验, 例如语音呼 叫中会导致用户设备较长时间无法进行被叫业务, 影响用户设备的业务体 验, 主叫会因为多次尝试联系被叫未果而对网络以及业务的满意度降低。 而 本发明实施例中,在数据网关和 /或服务网关复位时,可以通过复位中心服务 器接收数据网关发送的第一消息, 第一消息中包含用户设备的第一标识信 息; 根据第一标识信息查找已存储的信息中与第一标识信息对应的移动管理 网元标识和用户设备标识, 并向与移动管理网元标识对应的移动管理网元发 送第二消息, 第二消息包含用户设备标识, 以触发移动管理网元根据第二消 息重建分组数据网络 PDN连接, 能够及时的重建受影响的 PDN连接, 使得 下行数据包能够及时的到达用户设备,减低用户的等待时间,提升用户体验。 可选地, 作为另一实施例, 第一标识信息包括用户设备的网际协议 IP 地址或用户设备标识, 本发明实施例方法还包括复位中心服务器接收数据网 关发送的用于注册用户设备信息的第一注册消息, 第一注册消息包含用户设 备的网际协议 IP地址和用户设备标识; 复位中心服务器接收移动管理网元 发送的用于注册用户设备信息的第二注册消息, 第二注册消息包含移动管理 网元的标识和用户设备标识; 复位中心服务器根据用户设备标识将用户设备 的网际协议 IP地址和用户设备标识与移动管理网元标识进行关联。
换句话说,本发明实施例在数据网关和 /或服务网关复位之前需要完成用 户设备的注册过程, 将 PDN的相关信息注册到复位中心服务器, 具体地, 复位中心服务器可以接收数据网关发送的用于注册用户设备信息的第一注 册消息, 第一注册消息包含用户设备的网际协议 IP地址和用户设备标识; 复位中心服务器接收移动管理网元发送的用于注册用户设备信息的第二注 册消息, 第二注册消息包含移动管理网元的标识和用户设备标识; 之后, 复 位中心服务器根据用户设备标识将该 PDN连接的相关信息对应起来。
可选地, 作为另一实施例, 第一注册消息还可以包括 PDN连接对应的 接入点名称 APN, 在 630中, 第二消息还包括 APN, 以便移动管理网元根 据用户设备标识和 APN重建 PDN连接。 换句话说, 在重建 PDN时, 移动 管理网元可以根据该 APN信息确定需要重建的 PDN连接。
可选地, 作为另一实施例, 所示第一标识信息, 可以包括用户设备的 IP 地址和 /或用户设备标识, 具体地, 在数据网关复位时, 第一标识信息包括用 户设备的 IP地址, 其中, 在 620中, 复位中心服务器根据用户设备的 IP地 址确定与用户设备的 IP地址对应的移动管理网元标识和用户设备标识。
可替代地, 在服务网关复位时, 第一标识信息包括用户设备标识。
可选地, 用户设备标识可以包括用户设备的国际移动用户识别码 IMSI、 移动台识别号码 MSISDN和国际移动设备身份码 IMEI中的至少一个。
可选地, 移动管理网元标识包括移动管理网元的 IP地址、 移动管理网 元的全球唯一编号和移动管理网元的节点名字 FQDN中的至少一个。
图 7是根据本发明另一实施例的重建 PDN连接的方法的示意性流程图。 图 7所示的方法由移动管理网元执行, 如图 7所示的方法包括:
710, 移动管理网元接收复位中心服务器发送的第二消息, 第二消息包 含用户设备标识, 第二消息用于触发移动管理网元重建 PDN连接, 第二消 息为复位中心服务器在接收到数据网关发送的第一消息后发送的, 第一消息 中包含第一标识信息。
720, 移动管理网元根据第二消息重建 PDN连接。
因此, 本发明实施例可以通过移动管理网元接收复位中心服务器发送的 第二消息, 第二消息包含用户设备标识, 第二消息用于触发移动管理网元重 建 PDN连接; 移动管理网元根据第二消息重建用户设备的 PDN连接, 能够 及时的重建受影响的 PDN连接, 提升用户体验。
可选地, 作为另一实施例, 第一标识信息包括用户设备的网际协议 IP 地址或用户设备标识, 本发明实施例方法还包括移动管理网元向复位中心服 务器发送用于注册用户设备的信息的第二注册消息, 第二注册消息包含移动 管理网元的标识和用户设备标识。
换句话说,本发明实施例在数据网关和 /或服务网关复位之前需要完成用 户设备的注册过程, 将 PDN的相关信息注册到复位中心服务器, 具体地, 移动管理注册用户设备信息包括: 移动管理网元向复位中心服务器发送用于 注册用户设备的信息的第二注册消息, 第二注册消息包含移动管理网元的标 识和用户设备标识。
具体地,移动管理网元根据第一选择策略向复位中心服务器发送用于注 册用户设备信息的第二注册消息, 其中, 第一选择策略包括注册建立用户设 备的 IP多媒体子系统 IMS接入点名称 APN的 PDN连接的用户设备的信息, 或注册高等级用户设备 VIP的信息。
可选地, 作为另实施例, 在 720中, 移动管理网元根据第二选择策略确 定需要重建的 PDN连接, 其中, 第二选择策略包括恢复 IMS APN的 PDN 连接, 或恢复 VIP用户的 PDN连接。
应理解, 用户设备标识可以包括用户设备的国际移动用户识别码 IMSI、 移动台识别号码 MSISDN和国际移动设备身份码 IMEI中的至少一个。 移动 管理网元标识可以包括移动管理网元的 IP地址、 移动管理网元的全球唯一 编号和移动管理网元的节点名字 FQDN中的至少一个。
可选地, 作为另一实施例, 第二注册消息还包括用户设备的 PDN连接 对应的接入点名称 APN, 对应关系包括用户设备的网际协议 IP地址和 /或用 户设备标识、 APN与移动管理网元标识的对应关系, 第二消息还包括 APN, 其中, 在 720中, 移动管理网元根据用户设备标识和 APN重建 PDN连接。 可选地, 作为另一实施例, 第二消息还包括复位指示, 复位指示用于表 示服务网关复位, 在 720中, 移动管理网元重新选择服务网关, 并向重新选 择的服务网关发送建立会话请求消息, 建立会话消息中包含需要恢复的用户 设备的 PDN连接信息, 以便在重新选择的服务网关上重建 PDN连接。
其中, 重新选择的服务网关为复位重启的服务网关或其他的服务网关。 换句话说, 在 720中, 移动管理网元重新选择服务网关并重建用户上下文。
进一步地, 在实际应用中, 移动管理网元可以根据用户设备的状态进行 重建 PDN连接。
具体地, 在进行重建 PDN连接时, 如果用户设备正处于与移动管理网 元的连接状态, 则移动管理网元首先释放和用户设备间的信令连接, 将用户 设备转为空闲状态, 然后移动管理网元重新选择服务网关, 并向重新选择的 服务网关发送建立会话请求消息,建立会话消息中包含需要恢复的用户设备 的 PDN连接信息, 以便在重新选择的服务网关上重建 PDN连接。
可替代地, 如果用户设备正在发起服务请求、 移动管理网元不变的跟踪 区域更新或移动管理网元不变的路由区域更新流程, 则移动管理网元先执行 重新选择服务网关, 并向重新选择的服务网关发送建立会话请求消息, 建立 会话消息中包含需要恢复的用户设备的 PDN连接信息, 以便在重新选择的 服务网关上重建 PDN连接, 然后移动管理网元再执行后续的发起服务请求、 移动管理网元不变的跟踪区域更新或移动管理网元不变的路由区域更新流 程。
可替代地,如果用户设备正在发起移动管理网元改变的跟踪区域更新或 移动管理网元改变的路由区域更新流程, 则移动管理网元通知目标侧移动管 理网元需要执行重选服务网关的流程, 由目标移动管理网元重新选择服务网 关, 并向重新选择的服务网关发送建立会话请求消息, 建立会话消息中包含 需要恢复的用户设备的 PDN连接信息, 以便在重新选择的服务网关上重建 PDN连接。
可替代地, 如果用户设备正在进行切换流程, 移动管理网元拒绝切换请 求或重分配请求消息, 将用户设备转为空闲状态, 然后移动管理网元重新选 择服务网关, 并向重新选择的服务网关发送建立会话请求消息, 建立会话消 息中包含需要恢复的用户设备的 PDN连接信息, 以便在重新选择的服务网 关上重建 PDN连接。
可选地, 作为另一实施例, 数据网关和服务网关合一部署, 并且用户设 备的所有 PDN连接中部分 PDN连接建立在复位的数据网关上, 在 720中, 在数据网关复位的情况下, 移动管理网元重新选择服务网关, 向重新选择的 服务网关发送建立会话请求消息,建立会话请求消息中携带用户设备建立在 其他未复位的数据网关上的 PDN连接的信息, 以便重新选择的服务网关与 其他未复位的数据网关建立 PDN连接, 其中, 重新选择的服务网关为复位 重启的服务网关, 或其他的服务网关。
可替代地, 作为另一实施例, 数据网关和服务网关合一部署, 并且用户 设备的所有 PDN连接中部分 PDN连接建立在复位的数据网关上,在 720中, 在数据网关复位的情况下, 移动管理网元向用户设备发送去激活请求消息, 删除复位的数据网关上的 PDN连接, 以便用户设备重建 PDN连接。
可替代地, 作为另一实施例, 移动管理网元为 MME, 数据网关和服务 网关合一部署, 或者数据网关和服务网关分开部署, 用户设备的所有 PDN 连接建立在复位的数据网关上, 在 720中, 在数据网关复位的情况下, 移动 管理网元向用户设备发送分离请求消息,分离请求消息中携带重新附着请求 的原因值, 以便于用户设备根据分离请求消息删除所有 PDN连接, 并重新 发起附着流程。
可替代地, 作为另一实施例, 移动管理网元为 SGSN, 数据网关和服务 网关合一部署, 或者数据网关和服务网关分开部署, 用户设备的所有 PDN 连接建立在复位的数据网关上, 在 720中, 在数据网关复位的情况下, 移动 管理网元向用户设备发送 PDP去激活消息, PDP去激活消息中携带重新激 活请求的原因值,以便于用户设备根据 PDP去激活消息删除所有 PDP连接, 并重新发起激活 PDP请求。
可替代地, 作为另一实施例, 数据网关和服务网关分开部署, 用户设备 的所有 PDN连接中部分 PDN连接建立在复位的数据网关上, 在 720中, 在 数据网关复位的情况下, 移动管理网元向用户设备发送去激活请求消息, 删 除复位的数据网关上的 PDN连接, 以便用户设备重建 PDN连接。
可选地, 作为另一实施例, 在 720中, 移动管理网元可以根据数据网关 和服务网关的标识信息确定数据网关和服务网关是否是为合一部署,其中据 数据网关和服务网关的标识信息包括数据网关与服务网关的 IP地址和 /或数 据网关与服务网关的全域名。
图 8是根据本发明另一实施例的重建 PDN连接的方法的示意性流程图。 图 8所示的方法由数据网关执行, 如图 8所示的方法包括:
810, 数据网关接收下行数据包。
具体地,数据网关接收下行数据包,数据网关确定数据网关 /服务网关复 位。
820, 数据网关向复位中心服务器发送第一消息, 第一消息中包含用户 设备的第一标识信息, 以便复位中心服务器根据第一消息重建 PDN连接。
因此, 本发明实施例可以通过数据网关向复位中心服务器发送第一消 息, 第一消息中包含用户设备的第一标识信息, 以便复位中心服务器进行恢 复 PDN的连接, 能够及时的重建受影响的 PDN连接, 提升用户体验。
可选地, 作为另一实施例, 本发明实施例方法还包括数据网关向复位中 心服务器发送用于注册用户设备的信息的第一注册消息, 第一注册消息包含 用户设备的 IP地址和用户设备标识。
换句话说,本发明实施例在数据网关和 /或服务网关复位之前需要完成用 户设备的注册过程, 将原 PDN的相关信息注册到复位中心服务器, 具体地, 数据网关注册用户设备信息包括: 数据网关向复位中心服务器发送用于注册 用户设备的信息的第一注册消息, 第一注册消息包含用户设备的 IP地址和 用户设备标识。
具体地,数据网关可以根据选择策略向复位中心服务器发送用于注册用 户设备信息的第一注册消息, 其中, 选择策略包括注册用户设备的 IP多媒 体子系统 IMS接入点名称 APN的 PDN连接信息、注册高等级用户设备 VIP 的 PDN连接信息或注册用户设备的所有复位 PDN连接信息。
用户设备标识包括用户设备的国际移动用户识别码 IMSI、 移动台识别 号码 MSISDN和国际移动设备身份码 IMEI中的至少一个。
可选地, 作为另一实施例, 第一注册消息还包括 PDN连接对应的接入 点名称 APN, 第一消息还包括 APN。
进一步地, 作为另一实施例, 数据网关根据选择策略向复位中心服务器 发送用于注册用户设备信息的第一注册消息, 其中, 选择策略包括用户设备 的 IMS APN的 PDN连接信息, 或 VIP的 PDN连接信息。
可选的, 作为另一实施例, 本发明实施例方法, 还包括: 数据网关确定 数据网关复位; 数据网关确定下行数据包来自可信的 APN,并且确定下行数 据包头部的用户设备 IP地址, 其中第一标识信息包括用户设备的 IP地址。
可替代地, 作为另一实施例, 本发明实施例方法, 还包括: 数据网关确 定服务网关复位; 数据网关通过查询下行数据包对应的用户设备的 PDN连 接上下文, 确定下行数据包对应的用户设备标识, 其中, 第一标识信息包括 用户设备的标识。
具体地, 数据网关通过信令消息中的复位计数器, 或者路径探测机制获 知服务网关复位。 或者数据网关将下行数据包发送给服务网关, 服务网关 因为找不到下行数据包对应的用户设备信息, 所以发送失败指示 (Error Indication ) 消息给数据网关, 进而数据网关获知服务网关出现异常;
进一步的, 第一消息还包括复位指示, 复位指示用于表示服务网关复位 或服务网关向数据网关发送的失败指示消息, 失败指示消息表示服务网关复 位。
上文中, 结合图 6从复位中心服务器的角度, 结合图 7从移动管理网元 的角度, 结合图 8从数据网关的角度详细描述本发明实施例的重建 PDN连 接的方法。 应注意, 图 6至图 8的例子仅仅是为了帮助本领域技术人员理解 本发明实施例, 而非要将本发明实施例限于所例示的具体数值或具体场景。 本领域技术人员根据所给出的图 6至图 8的例子,显然可以进行各种等价的 修改或变化, 这样的修改或变化也落入本发明实施例的范围内。 下面结合具 体例子, 更加详细地描述本发明实施例。
图 9是根据本发明一个实施例的注册用户设备信息的流程图。 图 9所示 流程为 EPS网络内注册用户设备信息的流程,图中接入网可以为 GERAN的 3GPP接入, 对应接入网设备为 BSS, 接入网也可以为 UTRAN的 3GPP接 入, 对应接入网设备为 RNS, 接入网还可以为 E-UTRAN的 3GPP接入, 对 应接入网设备为演进的节点 B ( Evolved Node B, eNodeB ), 移动管理网元 可以为 S4 SGSN或者 MME,服务网关可以为 SGW,数据网关可以为 PGW。 如图 9所示, 包括:
901, 用户设备向移动管理网元发送请求消息。
用户设备发起建立连接流程, 具体地, 用户设备向移动管理网元发送附 着请求或分组数据协议 ( Packet Data Protocol , PDP )激活请求或 PDN连接 建立请求消息。 902, 移动管理网元发送建立会话请求消息给服务网关。
具体地, 移动管理网元接收到用户设备发送的请求消息后, 根据请求消 息, 向服务网关发送建立会话请求消息。
903, 服务网关发送建立会话请求消息给数据网关。
具体地, 服务网关接收到移动管理网元发送的请求消息后, 根据该请求 消息, 向数据网关发送建立会话请求消息。
904, 数据网关发送建立会话响应消息给服务网关。
具体地, 数据网关收到服务网关发送建立会话请求消息后, 数据网关建 立用户设备的 PDN连接, 向服务网关发送建立会话响应消息。
905, 数据网关向复位中心服务器发送用于注册用户设备信息的消息。 具体地, 该消息中包含用户设备的 IP地址和用户设备标识。 另外该消 息中还可以包含该 PDN连接对应的接入点名称( Access Point Name, APN ) 等信息。
其中, 用户设备标识可以为国际移动用户识别码( International Mobile Subscriber Identification Number, IMS I )、移动台识别号码 ( Mobile Subscriber International ISDN/PSTN number , MSISDN ) 或者国际移动设备身份码 ( International Mobile Equipment Identity, IMEI ) 中的至少一个。
应注意, 复位中心服务器节点可以是独立部署的逻辑实体, 也可以和网 络内其他网元合设, 如复位中心服务器可以为家乡用户寄存器 (Home Subscriber Server, HSS )或者策略和计费规则功能( Policy and Charging Rules Function , PCRF )等设备。 复位中心服务器的信息可以配置在数据网关上, 也可以通过其他网元如 HSS、 PCRF或网管 0&M中心下发给数据网关。 数 据网关通过该信息向对应的复位中心服务器发送消息。复位中心服务器的信 息可以为复位中心服务器的 IP地址, 复位中心服务器的全球唯一编号或者 复位中心服务器的节点名字 (FullyQualifiedDomainName, FQDN )等。
进一步的, 数据网关可以根据选择策略选择 PDN连接, 对于符合选择 策略的 PDN连接, 将用户设备信息注册到复位中心服务器。 如只注册用户 设备的 IP多媒体子系统( IP Multimedia Subsystem, IMS ) APN的 PDN连 接信息, 又如只注册高等级用户设备( Very Important People, VIP ) 的 PDN 信息等。 选择策略可以预先配置在数据网关上, 也可以从其他网元, 如 HSS 或者 PCRF中获取。 906, 服务网关向移动管理网元发送建立会话响应消息。
具体地, 服务网关建立用户设备的会话, 向移动管理网元回复建立会话 响应消息。
907, 移动管理网元通知接入网建立无线承载。
具体地, 移动管理网元通知接入网建立和服务网关之间的承载, 接入网 还建立和用户设备之间的无线承载。
908, 移动管理网元向服务网关发送更新承载请求消息。
具体地, 移动管理网元向服务网关发送更新承载请求消息, 更新承载请 求消息可以用于建立 PDN连接的下行数据转发通道。
909, 服务网关通知数据网关更新承载。
具体地, 服务网关通知数据网关更新承载, 如果是从非 3GPP网络切换 过来的, 该更新承载请求消息可以用于通知数据网关启动数据包转发。
910, 良务网关向移动管理网元回复更新 载响应消息。
911, 移动管理网元向复位中心服务器发送用于注册用户设备信息的消 息。
具体地,移动管理网元向复位中心服务器发送用于注册用户设备信息的 消息, 该消息中包含用户设备标识、 移动管理网元标识、 还可以包含用户设 备的其他信息, 例如用户设备的跟踪区域列表等。 移动管理网元标识可以为 移动管理网元的 IP地址, 移动管理网元的全球唯一编号或者移动管理网元 的节点名字 (FullyQualifiedDomainName, FQDN 等。 复位中心服务器的信 息可以配置在移动管理网元上, 也可以通过其他网元, 如 HSS、 PCRF或者 网管 0&M中心下发给移动管理网元。 移动管理网元通过该信息向对应的复 位中心服务器发送消息。
复位中心服务器用用户设备标识做关联,将数据网关注册的用户设备信 息和移动管理网元注册的用户设备信息进行关联。
进一步的, 移动管理网元可以根据选择策略选择用户设备, 将用户设备 信息注册到复位中心服务器。如只注册建立 IP多媒体子系统(IP Multimedia Subsystem, IMS ) APN的 PDN连接的用户设备的信息, 又如只注册高等 级用户设备(Very Important People, VIP ) 的信息等。 选择策略可以预先配 置在移动管理网元上, 也可以从其他网元, 如 HSS或者 PCRF中获取。
应注意, 图 9的例子是为了帮助本领域技术人员更好地理解本发明实施 例, 而非要限制本发明实施例的范围。 本领域技术人员根据所给出的图 9的 例子, 显然可以进行各种等价的修改或变化, 这样的修改或变化也落入本发 明实施例的范围内。
应理解, 上述各过程的序号的大小并不意味着执行顺序的先后, 各过程 的执行顺序应以其功能和内在逻辑确定, 而不应对本发明实施例的实施过程 构成任何限定。 例如, 步骤 905和步骤 911的时序可以调整, 步骤 905并不 限定在步骤 904之后, 步骤 911并不限定在步骤 910之后, 再例如, 服务网 关可以不通知数据网关更新承载。 也就是可以不经过步骤 909。 本发明实施 例并不限于此。
上述过程为用户设备的附着请求、 PDN连接建立请求或 PDP激活流程 中注册用户设备信息的流程, 在此基础上, 当网络设备(数据网关和 /或服务 网关) 复位后, 用户设备的 PDN连接的恢复流程将在下文描述。
具体地, 图 10为在数据网关和服务网关分开部署, 数据网关复位后, 用户设备的 PDN连接的恢复流程。 具体地, 图 10是根据本发明另一实施例 的重建 PDN连接的方法的示意性流程图。 如图 10所示方法包括:
1001 , 数据网关接收下行数据包。
具体地, 数据网关复位后收到下行数据包, 数据网关根据下行数据包的 头部信息, 如目的 IP地址, 定位用户设备的 PDN连接上下文。 由于数据网 关复位, 之前存储在数据网关中的该 PDN连接上下文的数据丟失, 导致数 据网关无法定位到该 PDN连接上下文。
1002, 数据网关向复位中心服务器发送下行数据包通知消息。
具体地,数据网关判断该下行数据包是否来自可信的 APN,如果来自可 信的 APN,数据网关向复位中心服务器发送下行数据包通知消息, 消息中包 含用户设备的 IP地址, 也就是该下行数据包的目的 IP地址。 如果该下行数 据包来自不可信的 APN,例如为来自英特网的攻击,则数据网关可将该数据 包丟弃。 这样, APN是否可信的判断, 能够增加网络安全, 例如, 可以防止 来自英特网的扫描攻击。
1003, 复位中心服务器向移动管理网元发送下行数据包通知消息。 具体地, 复位中心服务器收到数据网关的下行数据包通知消息后, 根据 消息中的用户设备的 IP地址查找存储的记录, 找到对应的移动管理网元标 识, 用户设备标识和下行数据包对应的 PDN连接的 APN等信息。 复位中心 服务器向移动管理网元标识对应的节点发送下行数据包通知消息, 消息中包 含用户设备标识, 还可以包含 APN等信息;
移动管理网元收到下行数据包通知消息后,根据消息中的用户设备标识 查询本地存储的用户上下文,如果消息中还包含 APN,可以根据用户设备标 识和 APN找到对应的用户设备的 PDN连接上下文。 进一步的, 移动管理网 元根据选择策略决定对哪些复位的 PDN连接进行恢复, 如只恢复 IMS APN 对应的 PDN连接, 恢复用户设备的所有复位 PDN连接, 只恢复 VIP用户的 复位 PDN连接等。 策略可以预先配置在移动管理网元上, 也可以从其他网 络中获取, 如 HSS或者 PCRF。 具体的, 移动管理网元根据用户设备上下文 或者 PDN连接上下文中的分配、 保持优先级(Allocation/Retention Priority, ARP )、 服务质量等级标识 (QoS Class Identifier, QCI )或 APN等信息决 定需要恢复的 PDN连接。
移动管理网元确定对应的用户设备的 PDN连接上下文后,根据 PDN连 接上下文中的服务网关和数据网关的信息判断该 PDN连接是否建立在合一 的服务网关和数据网关上,具体服务网关和数据网关的信息可以为服务网关 和数据网关的 IP地址、 服务网关和数据网关的 FQDN等。 例如, 移动管理 网元比较服务网关和数据网关的 IP地址, 或者比较服务网关和数据网关的 FQDN, 如果 IP地址或者 FQDN相同, 则认为服务网关和数据网关合一, 否则认为服务网关和数据网关分离部署。 本实施例中, 下行数据包对应的 PDN连接建立在分离的服务网关和数据网关上。
1004, 移动管理网元向用户设备发送去激活请求消息。
具体地, 如果用户设备存在多个 PDN连接上下文, 只有部分 PDN连接 上下文建立在复位的数据网关上, 移动管理网元对需要恢复的 PDN连接发 起 PDN连接去激活流程。 发送去激活请求消息给用户设备, 去激活请求消 息中携带重新激活请求的原因值。 以便于用户设备根据去激活请求消息删除 对应的 PDN连接, 并重新发起 PDN连接建立流程重建删除的 PDN连接。
应注意, 如果用户设备处于空闲态, 则移动管理网元先寻呼用户设备, 触发用户设备发起服务请求流程, 使用户设备建立和接入网的无线连接后, 移动管理单元再发送去激活请求消息给用户设备, 触发 PDN连接去激活流 程。
1005, 用户设备向移动管理网元发送去激活承载响应消息。 具体地, 用户设备回复去激活承载请求消息, 向移动管理网元发送去激 活 7 载响应消息。
1006, 用户设备发送 PDN连接请求消息给移动管理网元。
具体地, 用户设备发起 PDN连接建立流程, 发送 PDN连接请求消息给 移动管理网元, 重新建立去激活的 PDN连接。
1007, 移动管理网元建立 PDN连接。
具体地, 移动管理网元选择数据网关。 数据网关可能为复位后的数据网 关, 也可能是其他的数据网关。 移动管理网元发送建立会话请求消息给服务 网关, 消息中包含数据网关的 IP地址等信息。 服务网关和数据网关之间建 立会话, 并回复建立会话响应消息给移动管理网元;
1008, 无线承载建立和 RRC连接重配置。
具体地, 移动管理网元通知接入网建立无线承载, 接入网和用户设备间 进行无线资源控制 ( Radio Resource Control, RRC )连接重配置。
1009, 用户设备向移动管理网元发送 PDN连接建立接收消息。
1010, 移动管理网元修改承载。
具体地, 移动管理网元发送修改承载请求消息给服务网关, 修改承载请 求消息中包含接入网分配的用户面信息, 用于建立 PDN连接的下行用户面 隧道。 接入网分配的用户面信息包括接入网的 IP地址和隧道端点标识等信 息。 服务网关回复修改承载响应消息给移动管理网元。
通过上述过程完成了整个 PDN连接的重建, 移动管理网元重新选择的 数据网关可以对接收的重新发送的下行数据包进行转发,使得该下行数据包 能够及时到达用户设备, 能够减小或者避免对用户的影响, 提升用户体验。
图 10所示的实施例中, 用户设备存在多个 PDN连接上下文, 只有部分 PDN连接上下文建立在复位的数据网关上。 如果用户设备的 PDN连接上下 文中, 所有的 PDN连接上下文都建立在复位的数据网关上, 则移动管理网 元发起分离流程, 发送分离请求消息给用户设备, 分离消息中携带重新附着 请求的原因值。 具体地, 如图 11所示方法, 包括:
1101 , 数据网关接收下行数据包。
1102, 数据网关向复位中心服务器发送下行数据包通知消息。
1103 , 复位中心服务器向移动管理网元发送下行数据包通知消息。 具体地, 步骤 1101至步骤 1103与步骤 1001至步骤 1003对应, 为避免 重复, 此处不再赘述。
1104, 移动管理网元向用户设备发送分离请求消息。
具体地, 移动管理网元发起分离流程, 发送分离请求消息给用户设备, 分离消息中携带重新附着请求的原因值, 以便于用户设备根据分离请求消息 删除所有 PDN连接, 并重新附着到网络建立去激活的 PDN连接。
应注意, 如果用户设备处于空闲态, 则移动管理网元先寻呼用户设备, 触发用户设备发起服务请求流程, 使用户设备建立和接入网的无线连接后, 移动管理网元再发送分离请求消息给用户设备, 触发分离流程。
1105 , 用户设备向移动管理网元发送分离响应消息。
具体地, 用户设备回复分离请求消息, 向移动管理网元发送分离响应消 息。
1106, 用户设备发送附着请求消息给移动管理网元。
具体地, 用户设备发起附着流程, 发送附着请求消息给移动管理网元。 1107, 移动管理网元建立 PDN连接。
具体地, 移动管理网元选择服务网关和数据网关。 数据网关可能为复位 后的数据网关, 也可能是其他的数据网关。 移动管理网元发送建立会话请求 消息给服务网关, 消息中包含数据网关的 IP地址等信息。 服务网关和数据 网关之间建立会话, 并回复建立会话响应消息给移动管理网元。
1108, 无线承载建立和 RRC连接重配置。
具体地, 移动管理网元和接入网之间进行初始上下文建立, 接入网和用 户设备间进行 RRC连接重配置。
1109, 用户设备回复附着接受消息给移动管理网元。
1110, 移动管理网元修改承载。
具体地, 移动管理网元发送修改承载请求消息给服务网关, 修改承载请 求消息中包含接入网分配的用户面信息, 用于建立 PDN连接的下行用户面 隧道。 接入网分配的用户面信息包括接入网的 IP地址和隧道端点标识等信 息。 服务网关回复修改承载响应消息给移动管理网元。
上述附着流程只重建用户设备的一个 PDN连接, 用户设备还可以通过 PDN连接建立流程来重建其他复位的 PDN连接, 具体步骤和步骤 1007、 步 骤 1008、 步骤 1009和步骤 1010—致, 此处不再赘述。
通过上述过程完成了整个 PDN连接的重建, 移动管理网元重新选择的 数据网关可以对接收的重新发送的下行数据包进行转发,使得该下行数据包 能够及时到达用户设备, 能够减小或者避免对用户的影响, 提升用户体验。
应理解, 图 10和图 11所示的例子为移动管理网元为 MME的情形, 当 移动管理网元为 SGSN时, SGSN不论用户设备的 PDN连接上下文中, 所 有 /部分的 PDN连接上下文需要恢复, SGSN都只触发 PDN连接删除流程。 对应于 MME触发的 PDN连接删除流程, 步骤 1004或 1104修改为 SGSN 发送去激活 PDP上下文请求消息给用户设备, 消息中携带重新激活请求的 原因值。 具体地, 如图 12所示的方法包括:
1201 , 数据网关接收下行数据包。
1202, 数据网关向复位中心服务器发送下行数据包通知消息。
1203, 复位中心服务器向移动管理网元发送下行数据包通知消息。
具体地, 步骤 1201至步骤 1203与步骤 1101至步骤 1103对应, 为避免 重复, 此处不再赘述。
1204, 移动管理网元向用户设备发送去激活 PDP上下文请求消息。 换句话说, 移动管理网元向用户设备发送去激活 PDP上下文请求消息, 消息中携带重新激活请求的原因值, 以便于用户设备根据去激活 PDP上下 文请求消息删除对应的 PDP上下文, 并重新发起激活 PDP上下文流程。
应注意, 如果用户设备处于空闲态, 则移动管理网元先寻呼用户设备, 触发用户设备发起服务请求流程, 使用户设备建立和接入网的无线连接后, 移动管理单元再发送去激活请求消息给用户设备。
1205 , 用户设备向移动管理网元发送去激活 PDP上下文响应消息。
1206, 用户设备发送激活 PDP上下文请求消息给移动管理网元。
1207, 移动管理网元建立 PDN连接。
具体地, 移动管理网元选择数据网关。 数据网关可能为复位后的数据网 关, 也可能是其他的数据网关。 移动管理网元发送建立会话请求消息给服务 网关, 消息中包含数据网关的 IP地址等信息。 服务网关和数据网关之间建 立会话, 并回复建立会话响应消息给移动管理网元;
1208, 无线接入承载建立过程。
具体地, 移动管理网元和接入网之间建立无线接入承载, 接入网和用户 设备间进行无线承载建立;
1209, 移动管理网元向用户设备回复激活 PDP上下文响应消息。 1210, 移动管理网元 ^ί'爹改 载。
具体地, 如果接入网和服务网关之间建立直接隧道, 移动管理网元发送 修改承载请求消息给服务网关,修改承载请求消息中包含接入网分配的用户 面信息, 用于建立 PDN连接的下行用户面隧道。 接入网分配的用户面信息 包括接入网的 IP地址和隧道标识等信息。 服务网关回复修改承载响应消息 给移动管理网元。
通过上述过程完成了整个 PDN连接的重建, 移动管理网元重新选择的 数据网关可以对接收的重新发送的下行数据包进行转发,使得该下行数据包 能够及时到达用户设备, 能够减小或者避免对用户的影响, 提升用户体验。
图 13是根据本发明另一实施例的重建 PDN连接的方法的示意性流程 图。 图 13为在数据网关和服务网关合一部署的情形。 具体地, 如图 13所示 方法包括:
1301, 数据网关接收下行数据包。
具体地, 数据网关复位后收到下行数据包, 数据网关根据下行数据包的 头部信息, 如目的 IP地址, 定位用户设备的 PDN连接上下文。 由于数据网 关复位, 之前存储在数据网关中的该 PDN连接上下文的数据而丟失, 导致 数据网关无法定位到该 PDN连接上下文。
1302, 数据网关向复位中心服务器发送下行数据包通知消息。
具体地,数据网关判断该下行数据包是否来自可信的 APN,如果来自可 信的 APN,数据网关向复位中心服务器发送下行数据包通知消息, 消息中包 含用户设备的 IP地址, 也就是该下行数据包的目的 IP地址。 如果该下行数 据包来自不可信的 APN,例如为来自英特网的攻击,则数据网关可将该数据 包丟弃。 这样, APN是否可信的判断, 能够增加网络安全, 例如, 可以防止 来自英特网的扫描攻击。
1303 , 复位中心服务器向移动管理网元发送下行数据包通知消息。 具体地, 复位中心服务器收到数据网关的下行数据包通知消息后, 根据 消息中的用户设备的 IP地址查找存储的记录, 找到对应的移动管理网元标 识, 用户设备标识和下行数据包对应的 PDN连接的 APN等信息。 复位中心 服务器向移动管理网元标识对应的节点发送下行数据包通知消息, 消息中包 含用户设备标识, 还可以包含 APN等信息;
移动管理网元收到下行数据包通知消息后,根据消息中的用户设备标识 查询本地存储的用户上下文,如果消息中还包含 APN,可以根据用户设备标 识和 APN找到对应的用户设备的 PDN连接上下文。 进一步的, 移动管理网 元根据策略决定对哪些复位的 PDN连接进行恢复, 如只恢复 IMS APN对应 的 PDN连接, 恢复用户设备的所有复位 PDN连接, 只恢复 VIP用户的复位 PDN连接等。策略可以预先配置在移动管理网元上,也可以从其他网络中获 取, 如 HSS或者 PCRF。 移动管理网元根据用户设备上下文或者 PDN连接 上下文中的 ARP、 QCI或 APN等信息决定需要恢复的 PDN连接。
移动管理网元确定对应的用户设备的 PDN连接上下文后,根据 PDN连 接上下文中的服务网关和数据网关的信息判断该 PDN连接是否建立在合一 的服务网关和数据网关, 具体服务网关和数据网关的信息可以为服务网关和 数据网关的 IP地址、 服务网关和数据网关的 FQDN等。 本实施例中, 下行 数据包对应的 PDN连接建立在合一的服务网关和数据网关上。
1304, 移动管理网元与服务网关建立会话。
具体地, 如果用户设备的所有 PDN连接上下文中, 只有部分是建立在 复位的数据网关上的, 则移动管理网元触发服务网关切换流程, 重新选择服 务网关并向新的服务网关发送建立会话请求, 建立会话请求消息中携带用户 设备建立在其他未复位的数据网关 (如数据网关 2 )上的 PDN连接的信息。
1305, 服务网关修改承载。
服务网关发送修改承载请求消息给数据网关 2, 更新数据网关 2上的下 行隧道信息, 建立新的服务网关和数据网关 2间的 PDN连接。 数据网关回 复修改承载响应消息。
1306, 移动管理网元向用户设备发送去激活请求消息。
具体地, 如果用户设备存在多个 PDN连接上下文, 只有部分 PDN连接 上下文建立在复位的数据网关上, 移动管理网元对需要恢复的 PDN连接发 起 PDN连接去激活流程。 发送去激活请求消息给用户设备, 去激活请求消 息中携带重新激活请求的原因值。 以便于用户设备根据去激活请求消息删除 对应的 PDN连接, 并发起 PDN建立流程重建去激活的 PDN连接。
应注意, 如果用户设备处于空闲态, 则移动管理网元先寻呼用户设备, 触发用户设备发起服务请求流程, 使用户设备建立和接入网的无线连接后, 移动管理单元再发送去激活请求消息给用户设备, 触发 PDN连接去激活流 程。 1307, 用户设备向移动管理网元发送去激活承载响应消息。 具体地, 用户设备回复去激活请求消息, 向移动管理网元发送去激活承 载响应消息。
1308, 用户设备发送 PDN连接请求消息给移动管理网元。
具体地, 用户设备发起 PDN连接建立流程, 用户设备发送 PDN连接请 求消息给移动管理网元, 重新建立去激活的 PDN连接。
1309, 移动管理网元建立会话。
具体地, 移动管理网元选择数据网关。 数据网关可能为复位后的数据网 关, 也可能是其他的数据网关。 移动管理网元发送建立会话请求消息给服务 网关, 消息中包含数据网关的 IP地址等信息。 服务网关和数据网关之间建 立会话, 并回复建立会话响应消息给移动管理网元;
1310, 无线承载建立和 RRC连接重配置。
具体地, 移动管理网元通知接入网建立无线承载, 接入网和用户设备间 进行 RRC连接重配置;
1311, 用户设备向移动管理网元发送 PDN连接建立接收消息。
1312, 移动管理网元 ^ί'爹改 载。
具体地, 移动管理网元发送修改承载请求消息给服务网关, 修改承载请 求消息中包含接入网分配的用户面信息, 用于建立 PDN连接的下行用户面 隧道。 接入网分配的用户面信息包括接入网的 IP地址和隧道端点标识等信 息。
通过上述过程完成了整个 PDN连接的重建, 移动管理网元重新选择的 数据网关可以对接收的重新发送的下行数据包进行转发,使得该下行数据包 能够及时到达用户设备, 能够减小或者避免对用户的影响, 提升用户体验。
应注意, 图 13所示实施例为只有部分 PDN连接上下文建立在复位的数 据网关上, 上述实施例中对未复位的数据网关上的 PDN连接的恢复过程适 用于移动管理网元为 MME或者 SGSN的情形。 上述实施例中, 如果移动管 理网元为 SGSN, 对于建立在复位的数据网关上的 PDN连接, SGSN发起的 PDN连接去激活流程步骤与步骤 1204至 1210对应, 为避免重复,此处不再 赘述。
如果用户设备的 PDN连接上下文中, 所有的 PDN连接上下文都建立在 复位的数据网关上。 则当移动管理网元为 MME时, 移动管理网元发起分离 流程, 步骤与步骤 1104至 1110对应, 为避免重复, 此处不再赘述。
如果用户设备的 PDN连接上下文中, 所有的 PDN连接上下文都建立在 复位的数据网关上, 当移动管理网元为 SGSN时, 移动管理网元发起 PDN 连接去激活流程。 步骤与步骤 1204至 1210对应, 为避免重复, 此处不再赘 述。
图 14是根据本发明另一实施例的重建 PDN连接的方法的示意性流程 图。 图 14为数据网关和服务网关分开部署时, 服务网关复位的情形。 具体 的, 如图 14所示方法包括:
1401 , 数据网关向服务网关发送下行数据包。
具体地,数据网关收到下行数据包后,将该下行数据包发送给服务网关。
1402, 服务网关发送失败指示消息给数据网关。
具体地, 服务网关接收到数据网关发送的下行数据包后, 服务网关因为 复位, 所以找不到下行数据包对应的用户设备上下文, 发送失败指示(Error Indication ) 消息给数据网关, 进而数据网关获知服务网关出现异常。
可替代地,数据网关可以通过与服务网关之间的信令消息中的复位计数 器, 或者与服务网关之间的路径探测机制获知服务网关复位。
1403 , 数据网关向复位中心服务器发送下行数据包通知消息。
具体的, 数据网关通过查询下行数据包对应的用户设备的 PDN连接上 下文, 获得 PDN连接上下文中存储的下行数据包对应的用户设备标识。 数 据网关发送下行数据包通知消息给复位中心服务器, 消息中包含用户设备标 识、 还可以包含复位指示, 复位指示表示为服务网关复位, 或者表示 Error Indication触发的恢复。
1404, 复位中心服务器向移动管理网元发送下行数据包通知消息。
具体地, 复位中心服务器收到数据网关的下行数据包通知消息后, 根据 消息中的用户设备标识查找存储的记录,找到对应的移动管理网元标识等信 息。 复位中心服务器向移动管理网元标识对应的节点发送下行数据包通知消 息, 消息中包含用户设备标识, 还可以包含复位指示;
移动管理网元接收下行数据包通知消息后, 获知服务网关复位, 其中移 动管理网元根据消息中包含的复位指示, 或者根据消息中没有携带 APN信 息获知是服务网关复位。移动管理网元根据消息中的用户设备标识获知下行 数据包对应的用户设备的上下文。 移动管理网元发起服务网关切换流程, 用 以恢复受影响的 PDN连接。 进一步的移动管理网元根据策略决定是否发起 PDN连接恢复流程, 如该用户设备上下文中存在 IMS APN, 该用户为 VIP 用户等。 策略可以预先配置在移动管理网元上, 也可以从其他网元中获取, 如 0&M中心, 或者 PCRF。 移动管理网元根据用户设备上下文中的 ARP、 QCI或 APN等信息决定需要恢复的 PDN连接。
1405, 移动管理网元选择服务网关。
具体地, 移动管理网元重新选择服务网关, 该服务网关可能是复位重启 的服务网关, 也可能是其他的服务网关, 并向服务网关发送建立会话请求消 息, 消息中包含需要恢复的用户设备的 PDN连接信息;
1406, 服务网关修改承载。
具体地,服务网关向 PDN连接对应的数据网关发送修改承载请求消息, 该消息中包含服务网关的信令面和用户面信息;
1407, 数据网关回复修改承载响应。
具体地, 数据网关回复修改承载响应消息, 服务网关和数据网关之间重 建用户设备的 PDN连接;
1408, 月良务网关回复建立会话响应。
具体地, 服务网关向移动管理网元回复建立会话响应消息, 用户设备的 上下文在新选的服务网关上进行了重建。
通过上述过程完成了整个 PDN连接的重建, 服务网关可以对接收的下 行数据包进行转发, 使得该下行数据包能够及时到达用户设备, 能够减小或 者避免对用户的影响, 提升用户体验。
应注意, 在实际应用中, 移动管理网元可以根据用户设备的状态进行重 建 PDN连接。
具体地, 在进行重建 PDN连接时, 如果用户设备为连接态, 则移动管 理网元首先释放和用户设备间的信令连接, 将用户设备转为空闲状态, 然后 执行步骤 1405-1408。
可替代地, 如果用户设备正在发起服务请求、 移动管理网元不变的跟踪 区域更新或移动管理网元不变的路由区域更新流程, 则移动管理网元先执行 步骤 1405-1408, 再执行这些流程的后续步骤。
可替代地,如果用户设备正在发起移动管理网元改变的跟踪区域更新或 移动管理网元改变的路由区域更新流程, 则移动管理网元通知目标侧移动管 理网元需要执行重选服务网关的流程, 然后在步骤 1405-1408中由移动管理 网元执行的动作均为目标移动管理网元执行。
可替代地, 如果用户设备正在进行切换流程, 移动管理网元拒绝切换请 求或重分配请求消息, 将用户设备转为空闲状态, 然后执行步骤 1405-1408。
上文中,结合图 4至图 14详细描述了根据本发明实施例的重建 PDN连 接的方法, 下面将结合图 15至图 17描述本发明实施例中的重建 PDN连接 的设备。
图 15是根据本发明另一实施例的复位中心服务器的示意框图。 如图 15 所示的复位中心服务器 1500包括:处理器 1510、存储器 1520、总线系统 1530 和收发器 1540。处理器 1510、存储器 1520和收发器 1540通过总线系统 1530 相连。
具体地, 收发器 1540用于接收数据网关发送的第一消息, 第一消息中 包含用户设备的第一标识信息; 处理器 1510用于通过总线 1530调用存储在 存储器 1520中的代码, 根据第一标识信息确定与第一标识信息对应的移动 管理网元标识; 收发器 1540还用于向与移动管理网元标识对应的移动管理 网元发送第二消息, 第二消息包含用户设备标识, 以便移动管理网元根据第 二消息重建用户设备的分组数据网络 PDN连接。
因此, 本发明实施例可以通过接收数据网关发送的第一消息, 根据第一 消息中包含的用户设备的第一标识信息查找已存储的信息中与第一标识信 息对应的移动管理网元标识和用户设备标识, 并向与移动管理网元标识对应 的移动管理网元发送第二消息, 第二消息包含用户设备标识, 以便移动管理 网元根据第二消息重建分组数据网络 PDN连接, 能够及时的重建受影响的 PDN连接, 提升用户体验。
上述本发明实施例揭示的方法可以应用于处理器 1510中, 或者由处理 器 1510实现。处理器 1510可能是一种集成电路芯片,具有信号的处理能力。 在实现过程中, 上述方法的各步骤可以通过处理器 1510中的硬件的集成逻 辑电路或者软件形式的指令完成。 上述的处理器 1510可以是通用处理器、 数字信号处理器(Digital Signal Processor, DSP ),专用集成电路( Application Specific Integrated Circuit, ASIC )、 现成可编程门阵列 ( Field Programmable Gate Array, FPGA )或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、 逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处 理器等。 结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处 理器执行完成, 或者用译码处理器中的硬件及软件模块组合执行完成。 软件 模块可以位于随机存取存储器(Random Access Memory, RAM ), 闪存、 只 读存储器(Read-Only Memory, ROM ), 可编程只读存储器或者电可擦写可 编程存储器、 寄存器等本领域成熟的存储介质中。 该存储介质位于存储器 1520, 处理器 1510读取存储器 1520中的信息, 结合其硬件完成上述方法的 步骤, 该总线系统 1530除包括数据总线之外, 还可以包括电源总线、 控制 总线和状态信号总线等。 但是为了清楚说明起见, 在图中将各种总线都标为 总线系统 1530。
可选地, 作为另一实施例, 收发器 1540还用于接收数据网关发送的用 于注册用户设备信息的第一注册消息, 第一注册消息包含用户设备的网际协 议 IP地址和用户设备标识; 接收移动管理网元发送的用于注册用户设备信 息的第二注册消息, 第二注册消息包含移动管理网元的标识和用户设备标 识; 处理器 1510根据用户设备标识将用户设备的网际协议 IP地址和用户设 备标识与移动管理网元标识进行关联。
可选地, 作为另一实施例, 第一注册消息还包括 PDN连接对应的接入 点名称 APN, 第二消息还包括 APN, 以便移动管理网元根据用户设备标识 和 APN重建 PDN连接。
可选地, 作为另一实施例, 在数据网关复位或数据网关和服务网关同时 复位时, 第一标识信息包括用户设备的 IP地址, 处理器 1510根据用户设备 的 IP地址确定与用户设备的 IP地址对应的移动管理网元标识和用户设备标 识。
可选地, 作为另一实施例, 移动管理网元标识包括移动管理网元的 IP 地址、移动管理网元的全球唯一编号和移动管理网元的节点名字 FQDN中的 至少一个, 用户设备标识包括用户设备的国际移动用户识别码 IMSI、 移动 台识别号码 MSISDN和国际移动设备身份码 IMEI中的至少一个。
图 16是根据本发明另一实施例的移动管理网元的示意框图。如图 16所 示的复位中心服务器 1600包括: 处理器 1610、存储器 1620、 总线系统 1630 和收发器 1640。处理器 1610、存储器 1620和收发器 1640通过总线系统 1630 相连。 具体地, 收发器 1640用于接收复位中心服务器发送的第二消息, 第二 消息包含用户设备标识, 第二消息用于触发移动管理网元重建用户设备的 PDN连接,第二消息为复位中心服务器在接收到数据网关发送的第一消息后 发送的, 第一消息中包含用户设备的第一标识信息; 处理器 1510用于通过 总线 1530调用存储在存储器 1520中的代码,根据第二消息重建用户设备的 PDN连接.
因此, 本发明实施例可以通过接收复位中心服务器发送的第二消息, 第 二消息包含用户设备标识, 第二消息用于触发移动管理网元重建 PDN连接; 移动管理网元根据第二消息重建用户设备的 PDN连接, 能够及时的重建受 影响的 PDN连接, 提升用户体验。
上述本发明实施例揭示的方法可以应用于处理器 1610中, 或者由处理 器 1610实现。处理器 1610可能是一种集成电路芯片,具有信号的处理能力。 在实现过程中, 上述方法的各步骤可以通过处理器 1610中的硬件的集成逻 辑电路或者软件形式的指令完成。 上述的处理器 1610可以是通用处理器、 数字信号处理器( Digital Signal Processor, DSP )、专用集成电路( Application Specific Integrated Circuit, ASIC )、 现成可编程门阵列 ( Field Programmable Gate Array, FPGA )或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、 逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处 理器等。 结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处 理器执行完成, 或者用译码处理器中的硬件及软件模块组合执行完成。 软件 模块可以位于随机存取存储器(Random Access Memory, RAM ), 闪存、 只 读存储器(Read-Only Memory, ROM ), 可编程只读存储器或者电可擦写可 编程存储器、 寄存器等本领域成熟的存储介质中。 该存储介质位于存储器 1620, 处理器 1610读取存储器 1620中的信息, 结合其硬件完成上述方法的 步骤, 该总线系统 1630除包括数据总线之外, 还可以包括电源总线、 控制 总线和状态信号总线等。 但是为了清楚说明起见, 在图中将各种总线都标为 总线系统 1630。
可选地, 作为另一实施例, 第一标识信息包括用户设备的网际协议 IP 地址或用户设备标识, 收发器 1640还用于向复位中心服务器发送用于注册 用户设备的信息的第二注册消息, 第二注册消息包含移动管理网元的标识和 用户设备标识。
可选地, 作为另一实施例, 收发器 1640根据第一选择策略向复位中心 服务器发送用于注册用户设备的信息的第二注册消息, 其中, 第一选择策略 包括注册建立 IP多媒体子系统 IMS接入点名称 APN的 PDN连接的用户设 备的信息, 或注册高等级用户设备 VIP的信息。
可选地, 作为另一实施例, 处理器 1610根据第二选择策略确定需要重 建的 PDN连接, 其中, 第二选择策略包括恢复 IMS APN的 PDN连接, 或 恢复 VIP用户的 PDN连接。
可选地, 作为另一实施例, 第二注册消息还包括用户设备的 PDN连接 对应的接入点名称 APN, 对应关系包括用户设备的网际协议 IP地址和 /或用 户设备标识、 APN与移动管理网元标识的对应关系, 第二消息还包括 APN, 处理器 1610根据用户设备标识和 APN重建 PDN连接。
可选地, 作为另一实施例, 第二消息还包括复位指示, 复位指示用于表 示服务网关复位,
处理器 1610重新选择服务网关, 并通过收发器 1640向重新选择的服务 网关发送建立会话请求消息, 建立会话消息中包含需要恢复的用户设备的 PDN连接信息, 以便在重新选择的服务网关上重建 PDN连接。
可选地, 作为另一实施例, 数据网关和服务网关合一部署, 并且用户设 备的所有 PDN连接中部分 PDN连接建立在复位的数据网关上,处理器 1610 在数据网关复位的情况下, 重新选择服务网关, 并通过收发器 1640向重新 选择的服务网关发送建立会话请求消息,建立会话请求消息中携带用户设备 建立在其他未复位的数据网关上的 PDN连接的信息, 以便重新选择的服务 网关与其他未复位的数据网关建立 PDN连接, 其中, 重新选择的服务网关 为复位重启的服务网关, 或其他的服务网关。
可选地, 作为另一实施例, 数据网关和服务网关合一部署, 并且用户设 备的所有 PDN连接中部分 PDN连接建立在复位的数据网关上,收发器 1640 在数据网关复位的情况下, 向用户设备发送去激活请求消息, 删除复位的数 据网关上的 PDN连接, 以便用户设备重建 PDN连接。
可选地, 作为另一实施例, 移动管理网元为 MME, 数据网关和月良务网 关合一部署, 或者数据网关和服务网关分开部署, 用户设备的所有 PDN连 接建立在复位的数据网关上, 收发器 1640在数据网关复位的情况下, 向用 户设备发送分离请求消息, 分离请求消息中携带重新附着请求的原因值, 以 便于用户设备根据分离请求消息删除所有 PDN连接, 并重新发起建立 PDN 请求。
可选地, 作为另一实施例, 移动管理网元为 SGSN, 数据网关和服务网 关合一部署, 或者数据网关和服务网关分开部署, 用户设备的所有 PDN连 接建立在复位的数据网关上, 在数据网关复位的情况下, 收发器 1640向用 户设备发送 PDP去激活消息, PDP去激活消息中携带重新激活请求的原因 值, 以便于用户设备根据 PDP去激活消息删除所有 PDP连接, 并重新发起 激活 PDP请求。
可选地, 作为另一实施例, 数据网关和服务网关分开部署, 用户设备的 所有 PDN连接中部分 PDN连接建立在复位的数据网关上,在数据网关复位 的情况下, 收发器 1640向用户设备发送去激活请求消息, 删除复位的数据 网关上的 PDN连接, 以便用户设备重建 PDN连接。
可选地, 作为另一实施例, 处理器 1610还用于根据数据网关和服务网 关的标识信息确定数据网关和服务网关是否是为合一部署, 其中据数据网关 和服务网关的标识信息包括数据网关与服务网关的 IP地址, 和 /或数据网关 与服务网关的全域名
可选地, 作为另一实施例, 用户设备标识包括用户设备的国际移动用户 识别码 IMSI、 移动台识别号码 MSISDN和国际移动设备身份码 IMEI中的 至少一个;
移动管理网元标识包括移动管理网元的 IP地址、 移动管理网元的全球 唯一编号和移动管理网元的节点名字 FQDN中的至少一个。
图 17是根据本发明另一实施例的数据网关的示意框图。如图 17所示的 复位中心服务器 1700包括: 处理器 1710、 存储器 1720、 总线系统 1730和 收发器 1740。 处理器 1710、 存储器 1720和收发器 1740通过总线系统 1730 相连。
具体地, 收发器 1740用于接收下行数据包; 处理器 1710用于通过总线 1730调用存储在存储器 1720中的代码,对收发器 1740接收到的数据进行处 理。 收发器 1740还用于向复位中心服务器发送第一消息, 第一消息中包含 用户设备的第一标识信息, 以便复位中心服务器根据第一消息重建用户设备 的 PDN连接。 因此, 本发明实施例可以通过根据下行数据包的头部信息确定第一消 息, 第一消息中包含用户设备的第一标识信息, 数据网关向复位中心服务器 发送第一消息, 以便复位中心服务器进行恢复 PDN的连接, 能够及时的重 建受影响的 PDN连接, 提升用户体验。
上述本发明实施例揭示的方法可以应用于处理器 1710中, 或者由处理 器 1710实现。处理器 1710可能是一种集成电路芯片,具有信号的处理能力。 在实现过程中, 上述方法的各步骤可以通过处理器 1710中的硬件的集成逻 辑电路或者软件形式的指令完成。 上述的处理器 1710可以是通用处理器、 数字信号处理器(Digital Signal Processor, DSP ),专用集成电路( Application Specific Integrated Circuit, ASIC )、 现成可编程门阵列 ( Field Programmable Gate Array, FPGA )或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、 逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处 理器等。 结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处 理器执行完成, 或者用译码处理器中的硬件及软件模块组合执行完成。 软件 模块可以位于随机存取存储器(Random Access Memory, RAM ), 闪存、 只 读存储器(Read-Only Memory, ROM ), 可编程只读存储器或者电可擦写可 编程存储器、 寄存器等本领域成熟的存储介质中。 该存储介质位于存储器 1720, 处理器 1710读取存储器 1720中的信息, 结合其硬件完成上述方法的 步骤, 该总线系统 1730除包括数据总线之外, 还可以包括电源总线、 控制 总线和状态信号总线等。 但是为了清楚说明起见, 在图中将各种总线都标为 总线系统 1730。
可选地, 作为另一实施例, 收发器 1740还用于向复位中心服务器发送 用于注册用户设备信息的第一注册消息, 第一注册消息包含用户设备的 IP 地址和用户设备标识。
可选地, 作为另一实施例, 收发器 1740根据选择策略向复位中心服务 器发送用于注册用户设备信息的第一注册消息, 其中, 选择策略包括注册用 户设备的 IMS APN的 PDN连接信息, 或 VIP的 PDN连接信息。
可选地, 作为另一实施例, 第一注册消息还包括 PDN连接对应的接入 点名称 APN, 第一消息还包括 APN。
可选地, 作为另一实施例, 处理器 1710还用于确定数据网关复位, 并 确定下行数据包来自可信的 APN, 并且确定下行数据包头部的用户设备 IP 地址, 其中第一标识信息包括用户设备的 IP地址。
可选地, 作为另一实施例,, 处理器 1710还用于确定服务网关复位, 并 通过查询下行数据包对应的用户设备的 PDN连接上下文, 确定下行数据包 对应的用户设备的标识; 根据用户设备的标识确定第一消息, 其中, 第一标 识信息包括用户设备的标识。
可选地, 作为另一实施例, 第一消息还包括复位指示, 复位指示表示服 务网关复位或服务网关向数据网关发送的失败指示消息, 失败指示消息表示 服务网关复位。
可选地, 作为另一实施例, 用户设备标识包括用户设备的国际移动用户 识别码 IMSI、 移动台识别号码 MSISDN和国际移动设备身份码 IMEI中的 至少一个。
应理解, 本文中术语 "和 /或", 仅仅是一种描述关联对象的关联关系, 表示可以存在三种关系, 例如, A和 /或 可以表示: 单独存在 , 同时存 在 和^ 单独存在 B这三种情况。 另外, 本文中字符 "/", 一般表示前后 关联对象是一种 "或" 的关系。
应理解, 在本发明的各种实施例中, 上述各过程的序号的大小并不意味 着执行顺序的先后, 各过程的执行顺序应以其功能和内在逻辑确定, 而不应 对本发明实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到, 结合本文中所公开的实施例描述的各 示例的单元及算法步骤, 能够以电子硬件、 或者计算机软件和电子硬件的结 合来实现。 这些功能究竟以硬件还是软件方式来执行, 取决于技术方案的特 定应用和设计约束条件。 专业技术人员可以对每个特定的应用来使用不同方 法来实现所描述的功能, 但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 上述描 述的系统、 装置和单元的具体工作过程, 可以参考前述方法实施例中的对应 过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 装置和 方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示 意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可 以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个 系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间 的耦合或直接辆合或通信连接可以是通过一些接口, 装置或单元的间接耦合 或通信连接, 可以是电性, 机械或其它的形式。 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一 个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使 用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明 的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部 分可以以软件产品的形式体现出来, 该计算机软件产品存储在一个存储介质 中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。 而前 述的存储介质包括: U盘、移动硬盘、只读存储器( ROM, Read-Only Memory )、 随机存取存储器(RAM, Random Access Memory ), 磁碟或者光盘等各种可 以存储程序代码的介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应以所述权利要求的保护范围为准。

Claims

权利要求
1. 一种复位中心服务器, 其特征在于, 包括:
第一接收单元, 用于接收数据网关发送的第一消息, 所述第一消息中包 含第一标识信息;
确定单元,用于根据所述第一标识信息确定与所述第一标识信息对应的 移动管理网元标识;
发送单元,用于向与所述移动管理网元标识对应的移动管理网元发送第 二消息, 所述第二消息包含用户设备标识, 以便所述移动管理网元根据所述 第二消息重建所述用户设备的分组数据网络 PDN连接。
2. 根据权利要求 1 所述的复位中心服务器, 其特征在于, 所述第一标 识信息包括所述用户设备的网际协议 IP地址或所述用户设备标识, 所述复 位中心服务器还包括:
第二接收单元, 用于接收所述数据网关发送的用于注册用户设备信息的 第一注册消息, 所述第一注册消息包含所述用户设备的网际协议 IP地址和 所述用户设备标识; 备信息的第二注册消息, 所述第二注册消息包含所述移动管理网元的标识和 所述用户设备标识;
关联单元, 用于根据所述用户设备标识将所述用户设备的网际协议 IP 地址和所述用户设备标识与所述移动管理网元标识进行关联。
3. 根据权利要求 2所述的复位中心服务器, 其特征在于, 所述第一注 册消息还包括所述 PDN连接对应的接入点名称 APN,
所述第二消息还包括所述 APN,以便所述移动管理网元根据所述用户设 备标识和所述 APN重建所述 PDN连接。
4. 根据权利要求 2或 3所述的复位中心服务器, 其特征在于, 在数据网关复位时, 所述第一标识信息包括所述用户设备的 IP地址, 所述确定单元根据所述用户设备的 IP地址确定与所述用户设备的 IP地 址对应的所述移动管理网元标识和所述用户设备标识。
5. 根据权利要求 2或 3所述的复位中心服务器, 其特征在于, 在服务 网关复位时, 所述第一标识信息包括所述用户设备标识。
6. 根据权利要求 1至 5中任一项所述的的复位中心服务器, 其特征在 于,
所述移动管理网元标识包括所述移动管理网元的 IP地址、 所述移动管 理网元的全球唯一编号和所述移动管理网元的节点名字 FQDN 中的至少一 个, 所述用户设备标识包括所述用户设备的国际移动用户识别码 IMSI、 移 动台识别号码 MSISDN和国际移动设备身份码 IMEI中的至少一个。
7. 一种移动管理网元, 其特征在于, 包括:
接收单元, 用于接收复位中心服务器发送的第二消息, 所述第二消息包 含用户设备标识, 所述第二消息用于触发所述移动管理网元重建所述 PDN 连接, 所述第二消息为所述复位中心服务器在接收到数据网关发送的第一消 息后发送的, 所述第一消息中包含所述用户设备的第一标识信息;
重建单元, 用于根据所述第二消息重建所述 PDN连接。
8. 根据权利要求 7所述的移动管理网元, 其特征在于, 所述第一标识 信息包括所述用户设备的网际协议 IP地址或所述用户设备标识, 所述移动 管理网元还包括:
发送单元,用于向所述复位中心服务器发送用于注册用户设备的信息的 第二注册消息, 所述第二注册消息包含所述移动管理网元的标识和所述用户 设备标识。
9. 根据权利要求 8所述的移动管理网元, 其特征在于,
所述发送单元根据第一选择策略向所述复位中心服务器发送用于注册 用户设备的信息的第二注册消息, 其中, 所述第一选择策略包括注册建立 IP 多媒体子系统 IMS接入点名称 APN的 PDN连接的用户设备的信息,或注册 高等级用户设备 VIP的信息。
10. 根据权利要求 8或 9所述的移动管理网元, 其特征在于,
所述重建单元根据第二选择策略确定需要重建的 PDN连接, 其中, 所 述第二选择策略包括恢复 IMS APN的 PDN连接, 或恢复 VIP用户的 PDN 连接。
11. 根据权利要求 8至 10中任一项所述的移动管理网元, 其特征在于, 所述第二注册消息还包括所述 PDN连接对应的接入点名称 APN, 所述 对应关系包括所述用户设备的网际协议 IP地址和 /或所述用户设备标识、 所 述 APN与所述移动管理网元标识的对应关系,
所述第二消息还包括所述 APN, 所述重建单元根据所述用户设备标识和所述 APN重建所述 PDN连接。
12. 根据权利要求 7至 11中任一项所述的移动管理网元, 其特征在于, 所述第二消息还包括复位指示, 所述复位指示用于表示所述服务网关复位, 所述重建单元, 重新选择服务网关, 并向所述重新选择的服务网关发送 建立会话请求消息, 所述建立会话消息中包含需要恢复的用户设备的 PDN 连接信息, 以便在所述重新选择的服务网关上重建所述 PDN连接。
13. 根据权利要求 7至 11中的任一项所述的移动管理网元, 其特征在 于,
所述数据网关和服务网关合一部署, 并且所述用户设备的所有 PDN连 接中部分 PDN连接建立在复位的数据网关上,
所述重建单元, 在所述数据网关复位的情况下, 重新选择服务网关, 向 所述重新选择的服务网关发送建立会话请求消息, 所述建立会话请求消息中 携带所述用户设备建立在其他未复位的数据网关上的 PDN连接的信息, 以 便所述重新选择的服务网关与所述其他未复位的数据网关建立 PDN连接, 其中,所述重新选择的服务网关为复位重启的服务网关,或其他的服务网关。
14. 根据权利要求 7至 11中的任一项所述的移动管理网元, 其特征在 于,
所述数据网关和服务网关合一部署, 并且所述用户设备的所有 PDN连 接中部分 PDN连接建立在复位的数据网关上,
所述重建单元, 在所述数据网关复位的情况下, 向所述用户设备发送去 激活请求消息, 删除所述复位的数据网关上的 PDN连接, 以便所述用户设 备重建所述 PDN连接。
15. 根据权利要求 7至 11中的任一项所述的移动管理网元, 其特征在 于, 所述移动管理网元为 MME, 所述数据网关和服务网关合一部署, 或者 所述数据网关和服务网关分开部署, 所述用户设备的所有 PDN连接建立在 复位的数据网关上,
所述重建单元, 在所述数据网关复位的情况下, 向所述用户设备发送分 离请求消息, 所述分离请求消息中携带重新附着请求的原因值, 以便于所述 用户设备根据所述分离请求消息删除所有 PDN连接, 并重新发起附着流程。
16. 根据权利要求 7至 11中的任一项所述的移动管理网元, 其特征在 于, 所述移动管理网元为 SGSN, 所述数据网关和服务网关合一部署, 或者 所述数据网关和服务网关分开部署, 所述用户设备的所有 PDN连接建立在 复位的数据网关上,
所述重建单元, 在所述数据网关复位的情况下, 向所述用户设备发送 PDP去激活消息, 所述 PDP去激活消息中携带重新激活请求的原因值, 以 便于所述用户设备根据所述 PDP去激活消息删除所有 PDP连接, 并重新发 起激活 PDP请求。
17. 根据权利要求 7至 11中的任一项所述的移动管理网元, 其特征在 于, 所述数据网关和服务网关分开部署, 所述用户设备的所有 PDN连接中 部分 PDN连接建立在复位的数据网关上,
所述重建单元, 在所述数据网关复位的情况下, 向所述用户设备发送去 激活请求消息, 删除所述复位的数据网关上的 PDN连接, 以便所述用户设 备重建所述 PDN连接。
18. 根据权利要求 12至 17所述的移动管理网元,其特征在于,还包括: 确定单元,用于根据数据网关和服务网关的标识信息确定所述数据网关 和所述服务网关是否是为合一部署, 其中所述据数据网关和服务网关的标识 信息包括所述数据网关与所述服务网关的 IP地址, 和 /或所述数据网关与所 述服务网关的全域名。
19. 根据权利要求 7至 18中任一项所述的移动管理网元, 其特征在于, 所述用户设备标识包括所述用户设备的国际移动用户识别码 IMSI、 移 动台识别号码 MSISDN和国际移动设备身份码 IMEI中的至少一个;
所述移动管理网元标识包括所述移动管理网元的 IP地址、 所述移动管 理网元的全球唯一编号和所述移动管理网元的节点名字 FQDN 中的至少一 个。
20. 一种数据网关, 其特征在于, 包括:
接收单元, 用于接收下行数据包;
第一发送单元, 用于向复位中心服务器发送第一消息, 所述第一消息中 包含用户设备的第一标识信息, 以便所述复位中心服务器根据所述第一消息 重建所述 PDN连接。
21. 根据权利要求 20所述的数据网关, 其特征在于, 还包括: 第二发送单元, 用于向所述复位中心服务器发送用于注册用户设备信息 的第一注册消息, 所述第一注册消息包含用户设备的 IP地址和用户设备标
22. 根据权利要求 21所述的数据网关, 其特征在于,
所述第二发送单元根据选择策略向所述复位中心服务器发送用于注册 用户设备信息的第一注册消息, 其中, 所述选择策略包括注册用户设备的 IMS APN的 PDN连接信息, 或 VIP的 PDN连接信息。
23. 根据权利要求 22所述的数据网关, 其特征在于,
所述第一注册消息还包括所述 PDN连接对应的接入点名称 APN, 所述第一消息还包括所述 APN。
24. 根据权利要求 20至 23中任一项所述的数据网关, 其特征在于, 还 包括:
第一确定单元, 用于确定所述数据网关复位,
并确定所述下行数据包来自可信的 APN,并且确定所述下行数据包头部 的用户设备 IP地址, 其中所述第一消息包括所述用户设备的 IP地址。
25. 根据权利要求 20至 23中任一项所述的数据网关, 其特征在于, 还 包括:
第二确定单元, 用于确定服务网关复位,
并通过查询下行数据包对应的用户设备的 PDN连接上下文, 确定所述 下行数据包对应的用户设备的标识;
其中, 所述第一消息中包括所述用户设备标识。
26. 根据权利要求 25所述的数据网关, 其特征在于, 所述第一消息还 包括复位指示, 所述复位指示表示所述服务网关复位或所述服务网关向所述 数据网关发送的失败指示消息, 所述失败指示消息表示所述服务网关复位。
27. 根据权利要求 20至 26中任一项所述的数据网关, 其特征在于, 所述用户设备标识包括所述用户设备的国际移动用户识别码 IMSI、 移 动台识别号码 MSISDN和国际移动设备身份码 IMEI中的至少一个。
28. 一种重建分组数据网络 PDN连接的方法, 其特征在于, 包括: 复位中心服务器接收数据网关发送的第一消息, 所述第一消息中包含第 一标识信息;
所述复位中心服务器根据所述第一标识信息确定与所述第一标识信息 对应的移动管理网元标识;
所述复位中心服务器向与所述移动管理网元标识对应的移动管理网元 发送第二消息, 所述第二消息包含用户设备标识, 以便所述移动管理网元根 据所述第二消息重建所述 PDN连接。
29. 根据权利要求 28所述的方法, 其特征在于, 所述第一标识信息包 括用户设备的网际协议 IP地址或所述用户设备标识, 所述方法还包括: 所述复位中心服务器接收所述数据网关发送的用于注册用户设备信息 的第一注册消息, 所述第一注册消息包含所述用户设备的网际协议 IP地址 和所述用户设备标识;
所述复位中心服务器接收所述移动管理网元发送的用于注册所述用户 设备信息的第二注册消息, 所述第二注册消息包含所述移动管理网元的标识 和所述用户设备标识;
所述复位中心服务器根据所述用户设备标识将所述用户设备的网际协 议 IP地址和所述用户设备标识与所述移动管理网元标识进行关联。
30. 根据权利要求 29所述的方法, 其特征在于, 所述第一注册消息还 包括所述 PDN连接对应的接入点名称 APN,
所述第二消息还包括所述 APN,以便所述移动管理网元根据所述用户设 备标识和所述 APN重建所述 PDN连接。
31. 根据权利要求 29或 30所述的方法, 其特征在于,
在数据网关复位时, 所述第一标识信息包括所述用户设备的 IP地址, 所述复位中心服务器根据所述第一标识信息确定与所述第一标识信息 对应的移动管理网元标识, 包括:
所述复位中心服务器根据所述用户设备的 IP地址确定与所述用户设备 的 IP地址对应的所述移动管理网元标识和所述用户设备标识。
32. 根据权利要求 29或 30所述的方法, 其特征在于, 在服务网关复位 时, 所述第一标识信息包括所述用户设备标识。
33. 根据权利要求 28至 32中任一项所述的方法, 其特征在于, 所述移动管理网元标识包括所述移动管理网元的 IP地址、 所述移动管 理网元的全球唯一编号和所述移动管理网元的节点名字 FQDN 中的至少一 个, 所述用户设备标识包括所述用户设备的国际移动用户识别码 IMSI、 移 动台识别号码 MSISDN和国际移动设备身份码 IMEI中的至少一个。
34. —种重建 PDN连接的方法, 其特征在于, 包括:
移动管理网元接收复位中心服务器发送的第二消息, 所述第二消息包含 用户设备标识, 所述第二消息用于触发所述移动管理网元重建所述 PDN连 接, 所述第二消息为所述复位中心服务器在接收到数据网关发送的第一消息 后发送的, 所述第一消息中包含所述第一标识信息;
所述移动管理网元根据所述第二消息重建所述 PDN连接。
35. 根据权利要求 34所述的方法, 其特征在于, 所述第一标识信息包 括所述用户设备的网际协议 IP地址或所述用户设备标识, 所述方法还包括: 所述移动管理网元向所述复位中心服务器发送用于注册用户设备的信 息的第二注册消息, 所述第二注册消息包含所述移动管理网元的标识和所述 用户设备标识。
36. 根据权利要求 35所述的方法, 其特征在于, 所述移动管理网元向 所述复位中心服务器发送用于注册用户设备的信息的第二注册消息, 包括: 所述移动管理网元根据第一选择策略向所述复位中心服务器发送用于 注册用户设备的信息的第二注册消息, 其中, 所述第一选择策略包括注册建 立 IP多媒体子系统 IMS接入点名称 APN的 PDN连接的用户设备的信息, 或注册高等级用户设备 VIP的信息。
37. 根据权利要求 35或 36所述的方法, 其特征在于, 所述移动管理网 元根据所述第二消息重建所述 PDN连接, 包括:
所述移动管理网元根据第二选择策略确定需要重建的 PDN连接, 其中, 所述第二选择策略包括恢复 IMS APN的 PDN连接,或恢复 VIP用户的 PDN 连接。
38. 根据权利要求 35至 37中任一项所述的方法, 其特征在于, 所述第二消息还包括所述 APN,
其中, 所述移动管理网元根据所述第二消息重建所述 PDN连接, 包括: 所述移动管理网元根据所述用户设备标识和所述 APN重建所述 PDN连 接。
39. 根据权利要求 34至 38中任一项所述的方法, 其特征在于, 所述第 二消息还包括复位指示, 所述复位指示用于表示所述服务网关复位,
所述移动管理网元根据所述第二消息重建所述 PDN连接包括: 所述移动管理网元重新选择服务网关, 并向所述重新选择的服务网关发 送建立会话请求消息,所述建立会话消息中包含需要恢复的用户设备的 PDN 连接信息, 以便在所述重新选择的服务网关上重建所述 PDN连接。
40. 根据权利要求 34至 38中的任一项所述的方法, 其特征在于, 所述数据网关和服务网关合一部署, 并且所述用户设备的所有 PDN连 接中部分 PDN连接建立在复位的数据网关上, 所述移动管理网元根据所述 第二消息重建与所述用户设备对应的 PDN连接, 包括:
在所述数据网关复位的情况下, 所述移动管理网元重新选择服务网关, 向所述重新选择的服务网关发送建立会话请求消息, 所述建立会话请求消息 中携带所述用户设备建立在其他未复位的数据网关上的 PDN连接的信息, 以便所述重新选择的服务网关与所述其他未复位的数据网关建立 PDN连接, 其中,所述重新选择的服务网关为复位重启的服务网关,或其他的服务网关。
41. 根据权利要求 34至 38中的任一项所述的方法, 其特征在于, 所述数据网关和服务网关合一部署, 并且所述用户设备的所有 PDN连 接中部分 PDN连接建立在复位的数据网关上, 所述移动管理网元根据所述 第二消息重建与所述用户设备对应的 PDN连接, 包括:
在所述数据网关复位的情况下, 所述移动管理网元向所述用户设备发送 去激活请求消息, 删除所述复位的数据网关上的 PDN连接, 以便所述用户 设备重建所述 PDN连接。
42. 根据权利要求 34至 38中的任一项所述的方法, 其特征在于, 所述 移动管理网元为 MME, 所述数据网关和服务网关合一部署, 或者所述数据 网关和服务网关分开部署, 所述用户设备的所有 PDN连接建立在复位的数 据网关上, 所述移动管理网元根据所述第二消息重建与所述用户设备对应的 PDN连接, 包括:
在所述数据网关复位的情况下, 所述移动管理网元向所述用户设备发送 分离请求消息, 所述分离请求消息中携带重新附着请求的原因值, 以便于所 述用户设备根据所述分离请求消息删除所有 PDN连接, 并重新发起附着流 程。
43. 根据权利要求 34至 38中的任一项所述的方法, 其特征在于, 所述 移动管理网元为 SGSN, 所述数据网关和服务网关合一部署, 或者所述数据 网关和服务网关分开部署, 所述用户设备的所有 PDN连接建立在复位的数 据网关上, 所述移动管理网元根据所述第二消息重建与所述用户设备对应的 PDN连接, 包括:
在所述数据网关复位的情况下, 所述移动管理网元向所述用户设备发送 PDP去激活消息, 所述 PDP去激活消息中携带重新激活请求的原因值, 以 便于所述用户设备根据所述 PDP去激活消息删除所有 PDP连接, 并重新发 起激活 PDP请求。
44. 根据权利要求 34至 38中的任一项所述的方法, 其特征在于, 所述 数据网关和服务网关分开部署, 所述用户设备的所有 PDN连接中部分 PDN 连接建立在复位的数据网关上, 所述移动管理网元根据所述第二消息重建与 所述用户设备对应的 PDN连接, 包括:
在所述数据网关复位的情况下, 所述移动管理网元向所述用户设备发送 去激活请求消息, 删除所述复位的数据网关上的 PDN连接, 以便所述用户 设备重建所述 PDN连接。
45. 根据权利要求 39至 44所述的方法, 其特征在于, 还包括: 所述移动管理网元根据数据网关和服务网关的标识信息确定所述数据 网关和所述服务网关是否是为合一部署,其中所述据数据网关和服务网关的 标识信息包括所述数据网关与所述服务网关的 IP地址, 和 /或所述数据网关 与所述服务网关的全域名。
46. 根据权利要求 34至 45中任一项所述的方法, 其特征在于, 所述用户设备标识包括所述用户设备的国际移动用户识别码 IMSI、 移 动台识别号码 MSISDN和国际移动设备身份码 IMEI中的至少一个;
所述移动管理网元标识包括所述移动管理网元的 IP地址、 所述移动管 理网元的全球唯一编号和所述移动管理网元的节点名字 FQDN 中的至少一 个。
47. 一种重建 PDN连接的方法, 其特征在于, 包括:
数据网关接收下行数据包;
所述数据网关向复位中心服务器发送第一消息, 所述第一消息中包含第 一标识信息, 以便所述复位中心服务器根据所述第一消息重建所述 PDN连 接。
48. 根据权利要求 47所述的方法, 其特征在于, 还包括:
所述数据网关向所述复位中心服务器发送用于注册用户设备信息的第 一注册消息, 所述第一注册消息包含用户设备的 IP地址和用户设备标识。
49. 根据权利要求 48所述的方法, 其特征在于, 所述数据网关向所述 复位中心服务器发送用于注册用户设备的信息的第一注册消息, 包括: 所述数据网关根据选择策略向所述复位中心服务器发送用于注册用户 设备信息的第一注册消息, 其中, 所述选择策略包括注册用户设备的 IMS APN的 PDN连接信息, 或 VIP的 PDN连接信息。
50. 根据权利要求 49所述的方法, 其特征在于,
所述第一注册消息还包括所述 PDN连接对应的接入点名称 APN, 所述第一消息还包括所述 APN。
51. 根据权利要求 47至 50中任一项所述的方法,其特征在于,还包括: 所述数据网关确定所述数据网关复位;
所述数据网关确定所述下行数据包来自可信的 APN,并且确定所述下行 数据包头部的用户设备 IP地址;
其中, 所述第一消息中包括所述用户设备的 IP地址。
52. 根据权利要求 47至 50中任一项所述的方法,其特征在于,还包括: 所述数据网关确定服务网关复位;
所述数据网关通过查询下行数据包对应的用户设备的 PDN连接上下文, 确定所述下行数据包对应的用户设备的标识;
其中, 所述第一消息中包括所述用户设备标识。
53. 根据权利要求 52所述的方法, 其特征在于, 所述第一消息还包括 复位指示, 所述复位指示表示所述服务网关复位或所述服务网关向所述数据 网关发送的失败指示消息, 所述失败指示消息表示所述服务网关复位。
54. 根据权利要求 47至 53中任一项所述的方法, 其特征在于, 所述用户设备标识包括所述用户设备的国际移动用户识别码 IMSI、 移 动台识别号码 MSISDN和国际移动设备身份码 IMEI中的至少一个。
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Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016154921A1 (zh) * 2015-03-31 2016-10-06 华为技术有限公司 一种数据业务的数据传输方法及装置
WO2017028163A1 (zh) 2015-08-17 2017-02-23 华为技术有限公司 一种更新用户面网关的方法及装置
CN108307540A (zh) * 2016-09-22 2018-07-20 普天信息技术有限公司 一种服务网关重启后用户设备业务的快速恢复方法
US10242141B2 (en) * 2016-09-27 2019-03-26 Altera Corporation Reset sequencing for reducing noise on a power distribution network
CN106507434B (zh) * 2016-10-24 2020-02-14 深圳市万普拉斯科技有限公司 一种数据处理方法及装置
CN108377495B (zh) 2016-10-31 2021-10-15 华为技术有限公司 一种数据传输方法、相关设备及系统
CN108617030B (zh) * 2017-01-06 2020-10-30 中国移动通信有限公司研究院 一种业务转发方法、网关及移动性管理实体
WO2018141114A1 (en) * 2017-02-06 2018-08-09 Telefonaktiebolaget Lm Ericsson (Publ) Method and device for identifying pdn connection for ims service
US11240319B2 (en) 2017-03-02 2022-02-01 Convida Wireless, Llc Network service continuity without session continuity
KR102387582B1 (ko) 2017-09-29 2022-04-18 삼성전자 주식회사 무선 통신 시스템에서 pdn 연결 관리 방법 및 장치
CN110831253B (zh) * 2018-08-08 2022-01-14 华为技术有限公司 连接重建方法、设备及系统
WO2022044546A1 (ja) * 2020-08-27 2022-03-03 ソニーグループ株式会社 通信システムおよびその障害復旧方法
US11930427B2 (en) * 2020-10-08 2024-03-12 Mediatek Inc. Configuration enhancements on access point name (APN) or data network name (DNN) selection in user equipment (UE)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103202064A (zh) * 2010-09-15 2013-07-10 瑞典爱立信有限公司 用于重定位和恢复通过故障服务网关的连接及业务卸载的方法和设备
CN103535072A (zh) * 2011-03-18 2014-01-22 阿尔卡特朗讯公司 用于地理冗余网关处的会话弹性的系统和方法
WO2014059911A1 (zh) * 2012-10-18 2014-04-24 中兴通讯股份有限公司 计费同步方法、装置及系统
CN103797838A (zh) * 2013-12-31 2014-05-14 华为技术有限公司 一种业务处理的方法和设备

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI107980B (fi) * 1998-12-31 2001-10-31 Nokia Networks Oy Yhdyskäytävätukisolmun valinnan ohjaaminen
US7974228B2 (en) * 2008-01-07 2011-07-05 Alcatel-Lucent Usa Inc. Method of signaling-free idle mode mobility for an integrated 3GPP and 3GPP2 network
RU2476022C2 (ru) * 2008-06-23 2013-02-20 Квэлкомм Инкорпорейтед Концентратор для мультиплексирования соединений точек доступа с беспроводной сетью
US8964636B2 (en) 2008-06-23 2015-02-24 Qualcomm Incorporated Concentrator for multiplexing access point to wireless network connections
EP2530882B1 (en) * 2010-01-27 2014-09-10 Huawei Technologies Co., Ltd. Method, apparatus and system for processing node failure
US10225178B2 (en) * 2010-09-15 2019-03-05 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatus for relocating and restoring connections through a failed serving gateway and traffic offloading
CN102918918A (zh) * 2011-06-03 2013-02-06 华为技术有限公司 业务恢复的处理方法及移动管理网元
JP5904206B2 (ja) * 2011-09-30 2016-04-13 日本電気株式会社 通信システム、通信方法及び通信プログラム
US9538450B2 (en) * 2012-08-03 2017-01-03 Futurewei Technologies, Inc. System and method for mobile relay packet gateway relocation for path optimization
US20140044030A1 (en) * 2012-08-10 2014-02-13 Qualcomm Incorporated System and method of improving standby time in m2m devices
US9392634B2 (en) * 2012-08-15 2016-07-12 Telefonaktiebolaget Lm Ericsson (Publ) Node and method for connection re-establishment
WO2014044326A2 (en) * 2012-09-24 2014-03-27 Nokia Siemens Networks Oy Proximity service charging
WO2014079514A1 (en) * 2012-11-26 2014-05-30 Telefonaktiebolaget L M Ericsson (Publ) Handling of serving gateway failure
WO2014085622A1 (en) * 2012-11-30 2014-06-05 Interdigital Patent Holdings, Inc. Method and gateway to handle inactivity timer expiry with a converged gateway
WO2014113084A1 (en) * 2013-01-17 2014-07-24 Intel IP Corporation Systems and methods for efficient traffic offload without service disruption
US9730074B2 (en) * 2014-01-16 2017-08-08 Telefonaktiebolaget Lm Ericsson (Publ) System, methods and apparatuses for providing network access security control

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103202064A (zh) * 2010-09-15 2013-07-10 瑞典爱立信有限公司 用于重定位和恢复通过故障服务网关的连接及业务卸载的方法和设备
CN103535072A (zh) * 2011-03-18 2014-01-22 阿尔卡特朗讯公司 用于地理冗余网关处的会话弹性的系统和方法
WO2014059911A1 (zh) * 2012-10-18 2014-04-24 中兴通讯股份有限公司 计费同步方法、装置及系统
CN103797838A (zh) * 2013-12-31 2014-05-14 华为技术有限公司 一种业务处理的方法和设备

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
"3GPP TSG Core Network and Terminals.", RESTORATION PROCEDURES'' 3GPP TS 23.007 V12.5.0, vol. 12, 10 June 2014 (2014-06-10), XP050773950 *
"Evolved General Packet Radio Service (GPRS)'' Tunnelling Protocol for Control plane (GTPv2-C", 3GPP TSG CORE NETWORK AND TERMINALS., vol. 12, no. V 12.5.0, 20 June 2014 (2014-06-20), XP050774051 *
HUAWEI.: "Path failure on S5 interface", 3GPP TSG CT4 MEETING #65, 23 May 2014 (2014-05-23), XP050779168 *
See also references of EP3136818A4 *

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