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 PDFInfo
- 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
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- user equipment
- network element
- message
- management network
- mobility management
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 195
- 230000009849 deactivation Effects 0.000 claims description 52
- 230000008569 process Effects 0.000 claims description 52
- 230000007420 reactivation Effects 0.000 claims description 11
- 230000004913 activation Effects 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 27
- 230000004044 response Effects 0.000 description 25
- 238000011084 recovery Methods 0.000 description 19
- 238000000926 separation method Methods 0.000 description 14
- 230000006870 function Effects 0.000 description 11
- 238000001994 activation Methods 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 9
- 230000000977 initiatory effect Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 7
- 230000011664 signaling Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000012217 deletion Methods 0.000 description 4
- 230000037430 deletion Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/006—Locating 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/19—Connection re-establishment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
- H04W8/10—Mobility data transfer between location register and external networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
- H04W8/12—Mobility data transfer between location registers or mobility servers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/24—Interfaces 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. .
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2016151164A RU2666633C2 (ru) | 2014-06-30 | 2014-06-30 | Способ повторного установления pdn-соединения, центральный сервер сброса, элемент сети управления мобильностью и шлюз передачи данных |
EP14896881.1A EP3136818B1 (en) | 2014-06-30 | 2014-06-30 | Method of reestablishing pdn connection, reset central server, mobility management network element and data gateway |
PCT/CN2014/081320 WO2016000196A1 (zh) | 2014-06-30 | 2014-06-30 | 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 |
JP2017519749A JP6368859B2 (ja) | 2014-06-30 | 2014-06-30 | Pdn接続再確立方法、リセット中央サーバ、モビリティ管理ネットワーク要素、およびデータゲートウェイ |
CN201480002426.9A CN104704866B (zh) | 2014-06-30 | 2014-06-30 | 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 |
US15/381,756 US10499292B2 (en) | 2014-06-30 | 2016-12-16 | PDN connection reestablishing method, reset central server, mobility management network element, and data gateway |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2014/081320 WO2016000196A1 (zh) | 2014-06-30 | 2014-06-30 | 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 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/381,756 Continuation US10499292B2 (en) | 2014-06-30 | 2016-12-16 | PDN connection reestablishing method, reset central server, mobility management network element, and data gateway |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016000196A1 true WO2016000196A1 (zh) | 2016-01-07 |
Family
ID=53350112
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2014/081320 WO2016000196A1 (zh) | 2014-06-30 | 2014-06-30 | 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 |
Country Status (6)
Country | Link |
---|---|
US (1) | US10499292B2 (zh) |
EP (1) | EP3136818B1 (zh) |
JP (1) | JP6368859B2 (zh) |
CN (1) | CN104704866B (zh) |
RU (1) | RU2666633C2 (zh) |
WO (1) | WO2016000196A1 (zh) |
Families Citing this family (13)
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)
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)
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 |
-
2014
- 2014-06-30 JP JP2017519749A patent/JP6368859B2/ja active Active
- 2014-06-30 EP EP14896881.1A patent/EP3136818B1/en active Active
- 2014-06-30 RU RU2016151164A patent/RU2666633C2/ru active
- 2014-06-30 CN CN201480002426.9A patent/CN104704866B/zh active Active
- 2014-06-30 WO PCT/CN2014/081320 patent/WO2016000196A1/zh active Application Filing
-
2016
- 2016-12-16 US US15/381,756 patent/US10499292B2/en active Active
Patent Citations (4)
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)
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 * |
Also Published As
Publication number | Publication date |
---|---|
EP3136818A4 (en) | 2017-06-28 |
EP3136818A1 (en) | 2017-03-01 |
RU2016151164A3 (zh) | 2018-08-06 |
JP2017520212A (ja) | 2017-07-20 |
JP6368859B2 (ja) | 2018-08-01 |
EP3136818B1 (en) | 2018-11-07 |
CN104704866B (zh) | 2019-03-08 |
CN104704866A (zh) | 2015-06-10 |
US20170099619A1 (en) | 2017-04-06 |
RU2016151164A (ru) | 2018-08-06 |
US10499292B2 (en) | 2019-12-03 |
RU2666633C2 (ru) | 2018-09-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10499292B2 (en) | PDN connection reestablishing method, reset central server, mobility management network element, and data gateway | |
US11696358B2 (en) | Methods and nodes for handling bearers | |
US9143990B2 (en) | Method and device for handling failure of mobility management device in ISR activated scenario | |
EP2339785B1 (en) | Method, apparatus and system for processing service request | |
US20210176817A1 (en) | Ue and communication method thereof | |
WO2011157166A2 (zh) | 业务恢复的处理方法及移动管理网元 | |
US9893899B2 (en) | Network connection re-establishment method, related device and system | |
KR20220131316A (ko) | 희망하는 네트워크 슬라이스에서 pgw-c/smf의 재선택 | |
WO2013139235A1 (zh) | 一种寻呼方法及装置 | |
WO2016101791A1 (zh) | 故障处理的方法、装置和系统 | |
US10440616B2 (en) | Failure handling method, packet data network, mobility management entity, and network system | |
WO2014194672A1 (zh) | 一种异系统间重选或切换处理方法和设备 | |
US9516681B2 (en) | Method, device and system for accessing core network by means of non-3GPP access | |
WO2013104111A1 (zh) | 业务恢复方法和移动管理网元 | |
EP3977812B1 (en) | Methods, systems, and computer readable media for enhanced signaling gateway (sgw) status detection and selection for emergency calls | |
JP2023549629A (ja) | Pgw失敗におけるpdn接続の復元 | |
WO2012089030A1 (zh) | 一种多种接入方式接入网络的方法、接入设备和认证设备 | |
JP7510957B2 (ja) | 緊急コールのための強化されたシグナリングゲートウェイ(sgw)ステータス検出および選択のための方法、システム、およびコンピュータ読取可能媒体 | |
WO2017202450A1 (en) | Mobility procedure with change of serving gateway | |
WO2012097524A1 (zh) | 移动管理网元复位的处理方法、设备及系统 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14896881 Country of ref document: EP Kind code of ref document: A1 |
|
REEP | Request for entry into the european phase |
Ref document number: 2014896881 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014896881 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2017519749 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2016151164 Country of ref document: RU Kind code of ref document: A |