CN108574596B - Disaster recovery method, mobile management entity and home subscriber server - Google Patents

Disaster recovery method, mobile management entity and home subscriber server Download PDF

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Publication number
CN108574596B
CN108574596B CN201710151404.4A CN201710151404A CN108574596B CN 108574596 B CN108574596 B CN 108574596B CN 201710151404 A CN201710151404 A CN 201710151404A CN 108574596 B CN108574596 B CN 108574596B
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user equipment
information
message
mme
hss
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CN108574596A (en
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孙晓姬
彭宇才
石迎生
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2018/077012 priority patent/WO2018166334A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1073—Registration or de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The application relates to a disaster recovery method, a mobile management entity and a home subscriber server, wherein the disaster recovery method comprises the steps that the mobile management entity MME receives an IDR message which is sent by the home subscriber server HSS and is used for inserting user data, and the IDR message comprises identification information of user equipment; and the MME determines whether the user equipment corresponding to the identification information is registered on the failed or restarted packet data gateway (PGW) or not according to the identification information, and whether the service of the user equipment is not recovered or not, if so, the MME sends deactivation and reactivation messages of the corresponding Packet Data Protocol (PDP) to the user equipment, so that the service of the user equipment registered on the failed or restarted PGW is rapidly recovered.

Description

Disaster recovery method, mobile management entity and home subscriber server
Technical Field
The present application relates to the field of communications, and in particular, to a Packet Data Network Gateway (PGW) disaster recovery method and apparatus.
Background
A PGW disaster recovery mechanism is defined in The third Generation Partnership Project (3 GPP) standards organization for service recovery of users in a PGW failure scenario. For example, voice service is considered as real-time service in current network deployment, and the delay requirement for voice service is relatively high, that is, service cannot be recovered for a long time.
However, to recover the service through the PGW disaster recovery mechanism defined by the 3GPP standard organization, after a Mobility Management Entity (MME) learns a failure or a restart of the PGW, the MME triggers a Packet Data Protocol (PDP) of the user equipment registered on the failed or restarted PGW to go offline and to go online again according to a certain rate, that is, the MME needs a certain time to complete the operations of going offline and going online again of the PDP of the user equipment registered on the failed or restarted PGW. Therefore, if the user registered in the PGW comes to the called service during the period and the ue does not actively trigger PDN reestablishment, the ue is always unable to perform the called service.
Disclosure of Invention
The embodiment of the application provides a disaster recovery method and a disaster recovery device, which can be used for realizing the rapid recovery of the service of user equipment registered on a failed or restarted PGW.
In a first aspect, an embodiment of the present application provides a disaster recovery method, which may include the following steps:
a mobile management entity MME receives an IDR message of a user data insertion request sent by a home subscriber server HSS, wherein the IDR message comprises identification information of user equipment.
And the MME determines whether the user equipment corresponding to the identification information is registered on the failed or restarted packet data gateway (PGW) or not according to the identification information, and whether the service of the user equipment is not recovered or not.
If the MME determines that the user equipment is registered on the failed or restarted PGW and the service of the user equipment is not recovered, the MME sends deactivation and reactivation messages of the corresponding packet data protocol PDP to the user equipment, so that the service of the user equipment registered on the failed or restarted PGW is rapidly recovered.
With reference to the first aspect, in a first possible implementation manner of the first aspect, the IDR message may include called access domain selection indication information, and the method includes:
and the MME determines the called access domain information of the user equipment according to the IDR message.
The MME sends an IDA message for inserting user data response to the HSS, wherein the IDA message comprises called access domain information of the user equipment.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, before the MME sends an insert subscriber data answer IDA message to the HSS, the method may further include:
the MME determines the registration network information of the user equipment so that the MME can determine whether the user equipment is registered on the failed or restarted PGW according to the identification information of the user equipment included in the IDR message.
With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the called access domain information includes a latest activity time of the user equipment and first information, and the first information is used to instruct the user equipment to perform a voice service in a circuit switched CS domain network. The MME sends an IDA message to the HSS, wherein the IDA message comprises the following steps:
if the user equipment is respectively registered in a Packet Switching (PS) domain network and a Circuit Switching (CS) domain network, the MME sends first information and the latest activity time of the user equipment to the HSS.
With reference to the second possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the called access domain information includes a latest activity time of the user equipment and second information, and the second information is used to instruct the user equipment to perform a voice service in the packet switched PS domain network. The MME sends an IDA message to the HSS, wherein the IDA message comprises the following steps:
if the user equipment is registered in the PS domain network, the MME sends second information and the latest activity time of the user equipment to the HSS.
With reference to the first aspect, in a fifth possible implementation manner of the first aspect, the IDR message includes current location information of the user equipment and status information of the user equipment. After the MME sends a deactivation and reactivation message corresponding to a packet data protocol PDP to the user equipment, and the user equipment comes online, the method may include:
and the MME acquires the position information of the user equipment and the state information of the user equipment from the IDR message.
The MME sends an IDA message to the HSS, wherein the IDA message comprises the current position information of the user equipment and the state information of the user equipment.
With reference to the first aspect and any one of the foregoing possible implementation manners of the first aspect, in a sixth possible implementation manner of the first aspect, before the MME determines, according to the identification information, whether the user equipment corresponding to the identification information is registered on a failed or restarted packet data gateway PGW, the method includes:
and the MME acquires the information of PGW failure or restart.
In a second aspect, an embodiment of the present application provides a disaster recovery method, where the method includes:
a Home Subscriber Server (HSS) receives a User Data Request (UDR) message sent by a first device, wherein the UDR message comprises identification information of a user device.
The HSS sends an IDR message for requesting user data insertion to a mobile management entity MME, wherein the IDR message comprises identification information of user equipment, and is used for determining whether the user equipment corresponding to the identification information is registered on a failed or restarted packet data gateway PGW or not and whether service data of the user equipment is recovered or not according to the identification information by the MME, so that the service of the user equipment registered on the failed or restarted PGW is rapidly recovered.
With reference to the second aspect, in a first possible implementation manner of the second aspect, the IDR message includes called access domain selection indication information, and the method may further include:
and the HSS receives an IDA message which is sent by the MME and used for inserting user data, wherein the IDA message also comprises called access domain information of the user equipment.
And the HSS sends a user data response (UDA) message to the first equipment according to the IDA message, wherein the UDA message comprises the called access domain information of the user equipment.
With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the called access domain information includes a latest activity time of the user equipment and first information, and the first information is used to instruct the user equipment to perform a voice service in the circuit-switched CS domain network. The HSS receives an IDA message which is sent by the MME and used for inserting the user data response, and the IDA message comprises the following steps:
if the user equipment is respectively registered in a Packet Switching (PS) domain network and a Circuit Switching (CS) domain network, the HSS receives first information sent by the MME and the latest activity time of the user equipment.
With reference to the first possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the called access domain information includes a latest activity time of the user equipment and second information, where the second information is used to instruct the user equipment to perform a voice service in the packet switched PS domain network; the HSS receives an IDA message which is sent by the MME and used for inserting the user data response, and the IDA message comprises the following steps:
and if the user equipment is registered in the packet switching PS domain network, the HSS receives the second information sent by the MME and the latest activity time of the user equipment.
With reference to the second aspect, in a fourth possible implementation manner of the second aspect, the IDR message includes current location information of the user equipment and status information of the user equipment. After the HSS sends an IDR message to the mobility management entity MME, the method comprises:
and the HSS receives an IDA message which is sent by the MME and used for inserting the user data, wherein the IDA message comprises the current position information of the user equipment and the state information of the user equipment.
With reference to the second aspect and any one of the foregoing possible implementation manners of the second aspect, in a fifth possible implementation manner of the second aspect, the first device includes a traffic centralization and continuity application server or an application server.
In a third aspect, an embodiment of the present application provides a disaster recovery method, where the method may include:
and the MME receives an IDR message which carries the indication information of the PGW recovery and is sent by the HSS.
And the MME determines to send the deactivation and reactivation messages of the corresponding Packet Data Protocol (PDP) to the user equipment registered on the PGW according to the IDR messages, so that the service of the user equipment registered on the failed or restarted PGW is quickly recovered.
In a fourth aspect, an embodiment of the present application provides a disaster recovery method, where the method may include:
the home subscriber server HSS receives a first message sent by first equipment, wherein the first message carries indication information for recovering a packet data gateway PGW.
And the HSS sends an IDR message for requesting user data insertion to the MME according to the first message, thereby realizing the rapid recovery of the service of the user equipment registered on the failed or restarted PGW.
With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the first device includes an application server.
In a fifth aspect, an embodiment of the present application provides a mobility management entity, where the mobility management entity has a function of implementing a behavior of the mobility management entity in the foregoing method. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.
In a sixth aspect, an embodiment of the present application provides an attribution subscriber server, where the attribution subscriber server has a function of implementing an attribution subscriber server behavior in the foregoing method. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.
In a seventh aspect, an embodiment of the present application provides a mobility management entity, where the base station includes a receiver processor and a transmitter. The receiver is configured to support the mobility management entity to communicate with the home subscriber server, for example, receive a message sent by the home subscriber server involved in the foregoing method. The processor is configured to process related data, for example, determine whether the ue is registered in a failed or restarted PGW according to identification information of the ue included in the received IDR message. The transmitter is configured to send an instruction or a message to the user equipment, for example, if the user equipment corresponding to the identification information is registered on a failed or restarted PGW and a service of the user equipment is not recovered, send a deactivation and reactivation message of a corresponding packet data protocol PDP to the user equipment, so that the user equipment recovers the service. In one possible design, the mobility management entity may further include a memory, coupled to the processor, that stores program instructions and data necessary for the mobility management entity.
In an eighth aspect, embodiments of the present application provide a home subscriber server, which may include a receiver and a transmitter. The receiver is configured to support the home subscriber server to communicate with the first device, for example, receive a UDR message sent by the first device. The transmitter is configured to support communication with a mobility management entity, for example, to transmit a message to the mobility management entity. In one possible design, the home subscriber server may further include a processor configured to support the home subscriber server to perform corresponding functions in the foregoing method, for example, obtaining location information of the user equipment and status information of the user equipment, and other information of other user equipment according to the received UDR message. In one possible design, the home subscriber server may further include a memory, coupled to the processor, that stores program instructions and data necessary for the home subscriber server.
In a ninth aspect, embodiments of the present application provide a computer storage medium for storing computer software instructions for the mobility management entity, which includes a program designed to perform the above aspects.
In a tenth aspect, embodiments of the present application provide a computer storage medium for storing computer software instructions for the home subscriber server, which includes a program designed to execute the above aspects.
According to the disaster recovery method provided by the embodiment of the application, whether the user equipment is registered on the failed or restarted packet data gateway (PGW) or not is determined by the MME according to the IDR message sent by the HSS, and whether the service of the user equipment is not recovered or not is determined, if yes, the deactivation and reactivation message of the corresponding Packet Data Protocol (PDP) is sent to the user equipment, so that the service of the user equipment registered on the failed or restarted PGW is rapidly recovered.
Drawings
Fig. 1 is a schematic flow chart of a PGW disaster recovery method provided in the present application;
fig. 2 is a schematic flow chart of a PGW disaster recovery method according to an embodiment of the present application;
fig. 3 is a schematic flow chart of another PGW disaster recovery method according to an embodiment of the present application;
fig. 4 is a schematic flowchart of a PGW disaster recovery method according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a mobility management entity according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of another mobility management entity according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a home subscriber server according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of another home subscriber server according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a mobility management entity according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of another mobility management entity according to an embodiment of the present application;
fig. 11 is a home subscriber server according to an embodiment of the present application;
fig. 12 is another home subscriber server according to an embodiment of the present disclosure.
Detailed Description
According to the disaster recovery method provided by the embodiment of the application, the MME learns the service coming from the user equipment according to the IDR message sent by the Home Subscriber Server (HSS), determines whether the user equipment is registered on the failed or restarted packet data gateway (PGW) and whether the service of the user equipment is not recovered, and sends the deactivation and reactivation messages of the corresponding Packet Data Protocol (PDP) to the user equipment if the service of the user equipment is not recovered, so that the service of the user equipment registered on the failed or restarted PGW is quickly recovered.
Fig. 1 is a flowchart illustrating a PGW disaster recovery method according to an embodiment of the present application. As shown in fig. 1, the method may include the steps of:
s110, a home subscriber server HSS receives a user data request UDR message sent by a first device, where the UDR message includes identification information of a user device.
Optionally, in this embodiment of the present Application, the first device may be a Service Centralization and Continuity Application Server (SCC AS), or an Application Server. Wherein, the SCC AS is a server for providing voice service of user equipment; the application server is a server that provides a corresponding application to the user equipment.
In an embodiment, when a called service of a User Equipment (UE) is received by an IP Multimedia Subsystem (IMS) network side, an SCC AS may send a User Data Request (UDR) message to an HSS, where the UDR message may carry identification information of the User Equipment. The identification information of the user equipment is unique information for determining or identifying the user identity, such as an IP address of the user equipment. So that the HSS sends the IDR message to the registration MME of the user equipment corresponding to the identification information of the user equipment after receiving the UDR message, that is, S120 is executed.
In one embodiment, the application server sends a UDR message to the HSS according to specific application needs, where the UDR message may include identification information of the user equipment to obtain current location information of the user equipment or status information of the user equipment or other information of the user equipment. After receiving the UDR message, the HSS sends an IDR message to the registered MME of the user equipment corresponding to the identification information of the user equipment, that is, executes S120.
S120, the HSS sends an Insert Subscriber Data Request (IDR) message to the MME.
The IDR message is used to notify the MME that the user equipment corresponding to the identification information of the user equipment has arrived at the service, or has the service.
S130, the MME determines whether the user equipment corresponding to the identification information is registered on the failed or restarted packet data gateway (PGW) or not according to the identification information, and whether the service of the user equipment is not recovered or not.
After receiving an IDR message sent by a home subscriber server HSS, an MME determines, according to identification information of a user equipment in the IDR message and information of an acquired failed or restarted PGW, whether the user equipment corresponding to the identification information of the user equipment included in the IDR message is registered on the failed or restarted PGW, and a service of the user equipment is not recovered.
If the ue is registered in the failed or restarted PGW and the service of the ue is not recovered, S140 is performed.
S140, the MME sends deactivation and reactivation messages of the corresponding packet data protocol PDP to the user equipment.
In this embodiment of the present application, an MME may determine, according to a service restoration policy of a current user equipment, whether all PDPs of the user equipment need to be restored or only a PDP to be restored is restored, and send a deactivation and reactivation message of a corresponding PDP to the user equipment.
According to the disaster recovery method provided by the embodiment of the application, the MME can be used for knowing that the user equipment has come to a service according to the IDR message sent by the HSS, determining whether the user equipment is registered on the failed or restarted PGW and whether the service of the user equipment is not recovered, and if so, sending deactivation and reactivation messages of the corresponding packet data protocol PDP to the user equipment to recover the service of the user equipment, so that the service of the user equipment registered on the failed or restarted PGW is rapidly recovered.
Optionally, in this embodiment of the present application, before the MME determines, according to the identification information, that the user equipment corresponding to the identification information is registered on the failed or restarted packet data gateway PGW, the method includes:
and the MME acquires the information of PGW failure or restart.
In an embodiment of the present application, the MME acquiring the PGW failure or restart information may be implemented by a scheme on a standard: the SGW detects whether the PGW fails or is restarted, and if the PGW fails or is restarted, notifies the relevant MME of the PGW failure.
The disaster tolerance scheme on the standard is as follows: the SGW continuously sends Echo Request messages to the PGW several times through a path probing mechanism. If the PGW does not reply to Echo Response, the SGW considers that the PGW has a fault; or, after the PGW restarts, replying with the Echo Response message, and the SGW learns the PGW restart through Recovery in the Echo Response message.
After discovering the PGW failure or restarting, the SGW locally deletes the corresponding PDN connection resource corresponding to the PGW, and sends a PGW restart notification (PGW restart notification) message to the MME corresponding to each PDN connection. The MME learns the failure or restart of the corresponding PGW through the PGW restart notification message, and replies a PGW restart notification response (PGW restart notification ack) message to the SGW.
The MME determines whether to rebuild PDN connection resources related to the PGW according to APN/PLMN configured by an operator, scans a user, deactivates all PDN connection resources needing to be rebuilt and carries 'reactivation requested' to the UE in the process of registering PDN of the failed PGW according to a certain rate, and the UE restarts the rebuilding of the PDN connection resources.
Compared with a disaster recovery scheme on a standard, the disaster recovery method provided by the embodiment of the application accelerates the service recovery of the user equipment registered on the failed or restarted PGW.
Optionally, as shown in fig. 2, in an embodiment of the present application, the IDR message further includes called access domain selection indication information, and the method includes:
s150, the MME determines the called access domain information of the user equipment according to the IDR message.
After receiving a called service of user equipment, an IMS network side initiates a UDR message to an HSS to trigger called-Access Domain Selection (T-ADS) request information. And the UDR message comprises the identification information of the called user equipment. And the HSS sends IDR information to MME registered by the user equipment corresponding to the identification information of the user equipment after receiving the UDR information, wherein the IDR information comprises the identification information of the user equipment, the selection indication information of the called access domain and the identification information of the user equipment.
After receiving the IDR message sent by the HSS, the MME determines whether the ue is registered on the failed or restarted PGW according to the IDR message, and whether the service of the ue is not recovered, i.e., executes S130, and executes 150, i.e., determines the called domain access information of the ue.
S160, the MME sends an Insert Subscriber Data Answer (IDA) message to the HSS, the IDA message including called access domain information of the user equipment.
S170, after receiving the IDA message, the HSS sends a User Data Answer (UDA) message to the SCC AS, where the UDA message includes identification information of the User equipment and called access domain information, so AS to continue a subsequent band connection in the LTE network or the circuit switched CS domain network according to the called access domain information.
Optionally, in an embodiment of the present application, as shown in fig. 2, before the MME sends an insert subscriber data answer IDA message to the HSS, the method further includes:
s180, the MME determines the registration network information of the user equipment.
After receiving the IDR message, the MME determines whether the user equipment is registered on the failed or restarted packet data gateway PGW, and whether the service of the user equipment is not recovered, i.e., executes S130, and determines registration network information of the user equipment, such as registration network information that the user equipment is currently registered in the CS domain network and the PS domain network, or that the user equipment is currently singly registered in the PS domain network.
Optionally, in an embodiment of the present application, if the MME determines that the user equipment is respectively registered in the CS domain network and the PS domain network, that is, the user equipment is currently registered in the CS domain network and the PS domain network, the MME sends an IDA message to the HSS, where the IDA message may carry information of a latest Active Time (Last UE Active Time) and a PS session support IMS Voice (IMS Voice Over PS Sessions Supported) of the user equipment. The information of IMS Voice Over PS Sessions Supported may specifically be setting the cell IMS Voice Over PS Sessions Supported as NOT _ Supported, and is used to instruct the IMS network to subsequently connect the user equipment to the CS domain network for Voice service. In this embodiment, the information that the cell IMS Voice Over PS Sessions Supported is set to NOT _ Supported may be referred to as a first information.
Optionally, in an embodiment of the present application, if the MME determines that the UE is registered in the PS domain network, that is, the UE is currently registered in the PS domain network, the MME sends an IDA message to the HSS, where the IDA message may carry information of a latest Active Time (Last UE Active Time) and a PS session support IMS Voice (IMS Voice Over PS Sessions Supported) of the UE. The information of IMS Voice Over PS Sessions Supported may specifically be setting the cell IMS Voice Over PS Sessions Supported as SUPPORT, which is used to indicate the user equipment to perform Voice service in the PS domain network. In the embodiment of the present application, the information that the cell IMS Voice Over PS Sessions Supported can be set to SUPPORT is referred to as second information.
If the MME determines that the user equipment is currently registered in the single PS domain network, the MME sends a deactivation and reactivation message of the corresponding packet data protocol PDP to the user equipment according to the service restoration policy of the user equipment, and the specific description of this step is the same as S140 in fig. 1, and is not described here again for brevity. And the steps are not in the sequence with S160 and S170 in FIG. 2, and are executed according to the logic sequence.
Optionally, in another embodiment of the present invention, as shown in fig. 3, the application server initiates a UDR message to the HSS according to the needs of a specific application, and the HSS sends an IDR message to the MME, that is, performs S120, where the IDR message may be used to instruct the MME to obtain current location information of the user equipment and status information of the user equipment.
After receiving the IDR message sent by the HSS, the MME determines whether the ue is registered on the failed or restarted pdn gateway PGW and whether the service of the ue is not recovered, that is, S130 is performed, and if the ue is registered on the failed or restarted pdn gateway PGW and the service of the ue is not recovered, sends a deactivation and reactivation message corresponding to the PDP to the ue, that is, S140 is performed.
After the user equipment is reactivated and online, the method comprises the following steps:
s190, the MME acquires the position information of the user equipment and the state information of the user equipment according to the IDR message.
The IDR message includes location information of the ue, status information of the ue, and other information. Status information of the ue, i.e. EPS status information of the ue.
S195, the MME sends an insert subscriber data answer IDA message to the HSS, the IDA message including current location information of the user equipment and status information of the user equipment.
After HSS receives IDA message, it returns IDA message to application server, so that application server can determine that the user equipment has called service subsequently according to the current position information of user equipment and state information of user equipment in IDA message, and can connect to correspondent network to make voice service.
Fig. 4 is a flowchart illustrating a PGW disaster recovery method provided in the present application. As shown in fig. 4, the method may include the steps of:
s210, a Home Subscriber Server (HSS) receives a first message sent by a first device, wherein the first message carries indication information for recovering a packet data gateway (PGW).
The first device may be an application server.
In this embodiment of the application, the application server may detect the state of the PGW in real time through a ping mechanism, for example, the state information of the PGW, such as normal operation, restart, or failure. If the PGW is in an unavailable state, or in a failure or restart state, and the ue registered on the PGW has a service requirement, the application server may send a message to the HSS, and then perform step S210.
In this embodiment of the present application, the first message sent by the application Server to the HSS may be referred to as a Server-Assignment-Request (SAR) message, and may also be referred to as another name.
After receiving the first message sent by the application server, the HSS forwards the first message to the MME managing the PGW gateway, that is, executes S220 to notify the MME of PGW restart.
S220, the HSS sends an IDR message for requesting the insertion of the user data to the MME according to the first message.
S230, the MME determines to send deactivation and reactivation messages of the corresponding packet data protocol PDP to the user equipment registered on the PGW according to the first message.
According to the disaster recovery method provided by the embodiment of the application, the MME acquires the fault of the registered PGW of the user equipment according to the fault indication of the display PGW of the HSS and needs to execute the service recovery operation immediately, and the MME initiates the deactivation and reactivation of the PDP to be recovered of the user equipment according to the received information of the display PGW of the HSS, so that the service of the user equipment registered on the fault or restarted PGW is recovered quickly.
Fig. 5 is a mobility management entity according to an embodiment of the present disclosure. As shown in fig. 5, the mobility management entity may include a receiver 310, a processor 320, and a transmitter 330.
A receiver 310, configured to receive an IDR message, which is sent by a home subscriber server HSS and includes identification information of a user equipment.
The processor 320 is configured to determine, according to the identification information, whether the user equipment corresponding to the identification information is registered on the failed or restarted packet data gateway PGW, and whether the service of the user equipment is not recovered.
A transmitter 330, configured to send a deactivation and reactivation message of a corresponding packet data protocol PDP to the user equipment if the user equipment corresponding to the identification information is registered on a failed or restarted PGW and a service of the user equipment is not recovered.
In an embodiment of the present application, when the IMS network side receives a called service of a user equipment, the SCC AS sends a UDR message to the HSS, where the UDR message includes identification information of the user equipment, where the identification information of the user equipment may be unique information for identifying a user identity, for example, an IP address of the user equipment. The process of sending the IDR message to the registration MME of the user equipment corresponding to the identification information of the user equipment after the HSS receives the UDR message is the same as that described in S120 in fig. 1, and is not described herein again for brevity.
In another embodiment of the present application, the application server may send a UDR message to the HSS according to a specific application requirement, where the UDR message may include identification information of the user equipment, so as to obtain current location information of the user equipment or status information of the user equipment, and other information of the user equipment. After receiving the UDR message, the HSS sends an IDR message to the registration MME of the user equipment corresponding to the identification information of the user equipment, which is the same as that described in S120 in fig. 1, and for brevity, details are not described here again.
After the receiver 310 receives the IDR message sent by the HSS, the processor 320 determines whether the user equipment corresponding to the identification information is registered on the failed or restarted PGW according to the IDR message information, and whether the service data of the user equipment has not been recovered. If the processor 320 determines that the ue corresponding to the identification information of the ue is registered on the failed or restarted PGW according to the IDR message and the service data of the ue is not recovered yet, the transmitter 330 sends a deactivation and reactivation message of the corresponding PDP to the ue, so as to implement fast recovery of the service of the ue registered on the failed or restarted PGW.
Optionally, in an embodiment of the present application, the IDR message may include called access domain selection indication information.
The processor 320 is further configured to determine called access domain information of the user equipment according to the IDR message.
The transmitter 330 is configured to transmit an insert subscriber data answer IDA message to the HSS, the IDA message including the called access domain information of the user equipment.
After receiving the called service of the user equipment, the IMS network side SCC AS initiates a UDR message to the HSS to trigger the called access domain to select T-ADS request information. And the UDR message comprises the identification information of the called user equipment. And the HSS sends IDR information to MME registered by the user equipment corresponding to the identification information of the user equipment after receiving the UDR information, wherein the IDR information comprises the identification information of the user equipment, the selection indication information of the called access domain and the identification information of the user equipment.
After the receiver 310 receives the IDR message sent by the HSS, the processor 320 determines, according to the identification information of the user equipment, whether the user equipment corresponding to the identification information is registered on the failed or restarted PGW, and whether the service of the user equipment is not recovered, and determines the called access domain information of the user equipment.
The process is the same as the description of S150 in fig. 2, and for the specific description, reference may be made to the description of S150 in fig. 2, and for brevity, the description is not repeated here. Optionally, in this embodiment of the present application, the processor 320 is further configured to determine registered network information of the user equipment.
The detailed description of the process is the same as that of S180 in fig. 2, and is not repeated herein for brevity, so that the processor 320 determines the IDA message according to the registration network information of the ue.
Optionally, in an embodiment of the present application, the called access domain information may include a latest activity time of the user equipment and first information, where the first information is used to instruct the user equipment to perform a voice service in the circuit switched CS domain network. The transmitter 330 is configured to send an insert subscriber data answer IDA message to the HSS, and specifically includes:
the transmitter is configured to transmit the first information and a latest activity time of the user equipment to the HSS if the user equipment is registered in the packet switched PS domain network and the circuit switched CS domain network, respectively.
In this embodiment, the specific form of the first information may be that the IMS Voice Over PS Sessions Supported is set to NOT _ Supported.
Optionally, in another embodiment of the present application, the called access domain information includes a latest activity time of the user equipment and second information, and the second information is used for instructing the user equipment to perform a voice service in the packet switched PS domain network. The transmitter 330 is configured to transmit an insert subscriber data answer IDA message to the HSS, and includes:
the transmitter is for transmitting the second information and a latest activity time of the user equipment to the HSS if the user equipment is registered in the packet switched PS domain network.
In the embodiment of the present application, the specific form of the second information may be that the cell IMS Voice Over PS Sessions Supported is set to SUPPORT.
Optionally, in this embodiment of the present application, the IDR message includes current location information of the user equipment and status information of the user equipment. After the transmitter 330 is configured to send a deactivation and reactivation message corresponding to a packet data protocol PDP to the ue and the ue is on-line, the processor 320 is further configured to obtain location information of the ue and status information of the ue according to the IDR message.
The transmitter 330 is configured to transmit an insert subscriber data answer IDA message to the HSS, the IDA message including current location information of the user equipment and status information of the user equipment.
The application server initiates a UDR message to the HSS according to the needs of a specific application, and the HSS sends an IDR message to the MME, where the IDR message may include current location information of the user equipment and status information of the user equipment.
After the receiver 310 receives the IDR message sent by the HSS, the processor 320 determines whether the ue is registered on a failed or restarted packet data gateway PGW and whether the service of the ue is not recovered, and if both are true, the sender 330 sends a deactivation and reactivation message corresponding to a packet data protocol PDP to the ue.
When the ue is reactivated and goes online, the processor 320 obtains the location information of the ue and the status information of the ue from the received IDR message, where the status information may be EPS information. The transmitter 330 carries the location information of the user and the status information of the user equipment in an IDA message, and sends the IDA message to the HSS, so that the HSS carries the location information of the user equipment and the status information of the user equipment in a UDA message and sends the UDA message to the application server. Optionally, in this embodiment of the application, the processor 320 is further configured to obtain, by the MME, information of a PGW failure or a restart, so that the processor 320 determines, according to the identification information of the user equipment included in the received IDR message, whether the user equipment corresponding to the identification information is registered on the PGW that is restarted or failed.
It should be further noted that, the receiver 310, the processor 320 and the transmitter 330 in the mobility management entity MME provided in the embodiment of the present application may also implement the methods/steps performed by the mobility management entity in fig. 1 to fig. 3 by executing corresponding software. If implemented by software, the implementation may be implemented by corresponding functional units/functional modules, and as shown in fig. 6, the mobility management entity may include a receiving unit, a processing unit, a sending unit, and a storage unit. The receiving unit and the sending unit are used for communicating with other devices (such as user equipment, Home Subscriber Server (HSS) and the like).
In addition, as shown in fig. 5, the mobility management entity provided in the embodiment of the present application may further include a memory 340. The memory 340 is used for storing program instructions and data necessary for the mobility management entity.
Fig. 7 is a home subscriber server according to an embodiment of the present application. As shown in fig. 7, the home subscriber server includes a receiver 410 and a transmitter 420.
A receiver 410, configured to receive a user data request, UDR, message sent by a first device, where the UDR message includes identification information of a user device.
A transmitter 420, configured to send an insert user data request IDR message to a mobility management entity MME, where the IDR message includes identification information of a user equipment, and is used for the MME to determine, according to the identification information, whether the user equipment corresponding to the identification information is registered on a failed or restarted packet data gateway PGW, and whether service data of the user equipment is recovered.
Optionally, in this embodiment of the present application, the first device may include a traffic centralization and continuity application server SCC AS or an application server.
In an embodiment of the present application, when the IMS network side receives a called service of a user equipment, the SCC AS sends a UDR message to the HSS, where the UDR message includes identification information of the user equipment, where the identification information of the user equipment may be unique information for identifying a user identity, for example, an IP address of the user equipment. After the receiver 410 receives the UDR message, the transmitter 420 sends an IDR message to the registration MME of the user equipment corresponding to the identification information of the user equipment, which is the same as the description of S110 in fig. 1 and is not described herein again for brevity.
In another embodiment of the present application, the application server may send a UDR message to the HSS according to a specific application requirement, where the UDR message may include identification information of the user equipment, so as to obtain current location information of the user equipment or status information of the user equipment, and other information of the user equipment. After the receiver 410 receives the UDR message, the transmitter 420 sends an IDR message to the registration MME of the user equipment corresponding to the identification information of the user equipment, which is the same as that described in S110 in fig. 1, and for brevity, details are not described here again.
Optionally, in an embodiment of the present application, the IDR message includes called access domain selection indication information.
The receiver 410 is further configured to receive an IDA message inserted with user data response sent by the MME, where the IDA message further includes called access domain information of the user equipment;
the transmitter 420 is further configured to transmit a user data answer, UDA, message to the first device according to the IDA message, where the UDA message includes the called access domain information of the user device.
If the IMS network side receives the called service of the user equipment, the SCC AS initiates a UDR message to the HSS to trigger the called access domain to select T-ADS request information. And the UDR message comprises the identification information of the called user equipment. After the receiver 410 receives the UDR message, the transmitter 420 transmits an IDR message to the MME registered by the user equipment corresponding to the identification information of the user equipment, where the IDR message may include the identification information of the user equipment, the called access domain selection indication information, and the identification information of the user equipment. Optionally, in an embodiment of the present application, the called access domain information includes a latest activity time of the user equipment and first information, where the first information is used to instruct the user equipment to perform a voice service in the circuit switched CS domain network; the receiver 410 is configured to receive an add user data acknowledgement IDA message sent by the MME, and includes:
the receiver 410 is configured to receive the first information sent by the MME and the latest activity time of the user equipment, if the user equipment is registered in the packet switched PS domain network and the circuit switched CS domain network, respectively.
In this embodiment, the specific form of the first information may be that the IMS Voice Over PS Sessions Supported is set to NOT _ Supported.
Optionally, in another embodiment of the present application, the called access domain information includes a latest activity time of the user equipment and second information, where the second information is used to instruct the user equipment to perform a voice service in the packet switched PS domain network; the receiver is used for receiving an IDA message sent by the MME, and comprises the following steps:
if the user equipment is registered in the PS domain network, the receiver is used for receiving the second information sent by the MME and the latest activity time of the user equipment.
In the embodiment of the present application, the specific form of the second information may be that the cell IMS Voice Over PS Sessions Supported is set to SUPPORT.
Optionally, in this embodiment of the present application, the IDR message includes current location information of the user equipment and status information of the user equipment.
The receiver 410 is further configured to receive an add user data response IDA message sent by the MME, where the IDA message includes current location information of the user equipment and status information of the user equipment.
It should be noted that, in the embodiment of the present application, the home subscriber server further includes a processor 430 and a memory 440. Processor 430 is configured to process data information, such as data received by receiver 410. The memory is used for storing program instructions and data necessary for the home subscriber server. It should be further noted that, the receiver 410, the transmitter 420, the processor 430 and the memory 440 of the home subscriber server provided in the embodiment of the present application may also implement the methods/steps performed by the home subscriber server in fig. 1 to 3 by executing corresponding software. If the home subscriber server is implemented by software, the home subscriber server may include a receiving unit, a processing unit, a sending unit, and a storage unit, as shown in fig. 8. Wherein the receiving unit and the sending unit are used for communicating with other devices (such as a mobility management entity, a continuity application server or an application server, etc.).
Fig. 9 is a mobility management entity according to an embodiment of the present application. As shown in fig. 9, the mobility management entity may include a receiver 510 and a transmitter 520.
The receiver 510 is configured to receive an IDR message, which is sent by a home subscriber server HSS and carries indication information of PGW recovery.
A transmitter 520, configured to determine to send a deactivation and reactivation message of a corresponding packet data protocol PDP to the user equipment registered on the PGW according to the IDR message.
After receiving the IDR message, the receiver 510 sends a deactivation and reactivation message of the corresponding PDP to the user equipment registered on the PGW according to the IDR message. The process is the same as S220 and S230 in fig. 4, and is not described herein again for brevity, so as to implement fast service recovery of the user equipment registered on the failed or restarted PGW.
In the embodiment of the present application, as shown in fig. 9, the mobility management entity may further include a processor 530 and a memory 540. Processor 530 is used to process data. The memory 540 is used for storing program instructions and data necessary for the mobility management entity.
It should be further noted that, the receiver 510, the transmitter 520, the processor 530 and the memory 540 in the mobility management entity MME provided in the embodiment of the present application may also implement the method/steps performed by the mobility management entity in fig. 4 by executing corresponding software. If implemented by software, the implementation may be implemented by corresponding functional units/functional modules, and as shown in fig. 10, the mobility management entity may include a receiving unit, a processing unit, a sending unit, and a storage unit. The receiving unit and the sending unit are used for communicating with other devices (such as user equipment, Home Subscriber Server (HSS) and the like).
Fig. 11 is a home subscriber server according to an embodiment of the present application. As shown in fig. 11, the home subscriber server includes a receiver 610 and a transmitter 620.
The receiver 610 is configured to receive a first message sent by a first device, where the first message carries indication information for PGW recovery.
A transmitter 620, configured to transmit an insert user data request IDR message to the MME.
The first message may be referred to as a Server-Assignment-Request (SAR) message, or may also be referred to by other names, and in this embodiment, specific names of the first message are not limited.
Optionally, in this embodiment of the present application, the first device includes an application server.
The process is the same as S210 in fig. 4, and for detailed description, reference is made to the description of S210 in fig. 4, and for brevity, the description is not repeated here.
In an embodiment of the present application, as shown in fig. 11, the home subscriber server may further include a processor 630 and a memory 640. Processor 630 is used to process data. The memory 640 is used for storing program instructions and data necessary for the home subscriber server.
It should be further noted that, the receiver 610, the transmitter 620, the processor 630 and the memory 640 of the home subscriber server provided in the embodiment of the present application may also implement the method/steps executed by the home subscriber server in fig. 4 by executing corresponding software. If the home subscriber server is implemented by software, the home subscriber server may include a receiving unit, a processing unit, a sending unit, and a storage unit, as shown in fig. 12. Wherein the receiving unit and the sending unit are used for communicating with other devices (such as a mobility management entity, a continuity application server or an application server, etc.).
It should be understood that the Processor 320/430/530/630 in the mobility management entity provided in fig. 5, the home subscriber server provided in fig. 7, and the mobility management entity provided in fig. 9 and the home subscriber server provided in fig. 11 may be a Central Processing Unit (CPU), but may also be other general purpose processors, Digital Signal Processors (DSP), Application Specific Integrated Circuits (ASIC), Field-Programmable Gate arrays (FPGA) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and so on. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
In implementation, the steps of the above method may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 320/430/530/630. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and the processor 320/430/530/630 reads the information in the memory and performs the steps of the method described above in conjunction with its hardware. To avoid repetition, it is not described in detail here.
Memory 340/440/540/640 can include both read-only memory and random-access memory, and provides instructions and data to processor 320/430/530/630. The portion of memory may also include non-volatile random access memory.
In the several embodiments provided in the present application, it should be understood that the disclosed system, base station, local breakout controller, gateway, and data transmission method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the unit is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially or partially contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (22)

1. A disaster recovery method, comprising:
a mobile management entity MME receives an IDR message of a user data inserting request sent by a home subscriber server HSS, wherein the IDR message comprises identification information of user equipment;
the MME determines whether user equipment corresponding to the identification information is registered on a failed or restarted packet data gateway (PGW) or not according to the identification information, and whether the service of the user equipment is not recovered or not; the MME determines the called access domain information of the user equipment according to the IDR message;
if the MME determines that the user equipment is registered on a failed or restarted PGW and the service of the user equipment is not recovered, the MME sends a deactivation and reactivation message of a corresponding Packet Data Protocol (PDP) to the user equipment;
the MME sends an IDA message for inserting user data response to the HSS, wherein the IDA message comprises called access domain information of the user equipment.
2. The method of claim 1, wherein before the MME sends an insert subscriber data acknowledgement (IDA) message to the HSS, the method further comprises:
the MME determines registration network information of the user equipment.
3. The method of claim 2, wherein the called access domain information comprises a latest activity time of the user equipment and first information, and wherein the first information is used for instructing the user equipment to perform voice service in a Circuit Switched (CS) domain network; the MME sends an IDA message to the HSS, and the IDA message comprises the following steps:
if the user equipment is respectively registered in a Packet Switching (PS) domain network and a Circuit Switching (CS) domain network, the MME sends the first information and the latest activity time of the user equipment to the HSS.
4. The method of claim 2, wherein the called access domain information comprises a latest activity time of the user equipment and second information, and the second information is used for instructing the user equipment to perform voice service in a packet switched PS domain network; the MME sends an IDA message to the HSS, and the IDA message comprises the following steps:
if the user equipment is registered in a Packet Switching (PS) domain network, the MME sends the second information and the latest activity time of the user equipment to the HSS.
5. The method of claim 1, wherein the IDR message comprises current location information of the UE and status information of the UE; after the MME sends a deactivation and reactivation message of a corresponding Packet Data Protocol (PDP) to the user equipment and the user equipment is online, the method comprises the following steps:
the MME acquires the position information of the user equipment and the state information of the user equipment from the IDR message;
and the MME sends an IDA message for inserting user data response to the HSS, wherein the IDA message comprises the current position information of the user equipment and the state information of the user equipment.
6. The method according to any one of claims 1 to 5, wherein before the MME determines whether the user equipment corresponding to the identification information is registered on a failed or restarted packet data gateway (PGW) according to the identification information, the method includes:
and the MME acquires the information of PGW failure or restart.
7. A disaster recovery method, comprising:
a Home Subscriber Server (HSS) receives a User Data Request (UDR) message sent by first equipment, wherein the UDR message comprises identification information of the user equipment;
the HSS sends an IDR message for requesting user data insertion to a Mobile Management Entity (MME), wherein the IDR message comprises identification information of the user equipment and called access domain information, and is used for the MME to determine whether the user equipment corresponding to the identification information is registered on a failed or restarted packet data gateway (PGW) or not according to the identification information and whether service data of the user equipment is recovered or not;
the HSS receives an IDA message which is sent by the MME and used for inserting user data response, and the IDA message also comprises called access domain information of the user equipment;
and the HSS sends a user data response (UDA) message to the first equipment according to the IDA message, wherein the UDA message comprises the called access domain information of the user equipment.
8. The method of claim 7, wherein the called access domain information comprises a latest activity time of the user equipment and first information, and wherein the first information is used for instructing the user equipment to perform voice service in a Circuit Switched (CS) domain network; the HSS receives an IDA message sent by the MME and comprises the following steps:
if the user equipment is respectively registered in a Packet Switching (PS) domain network and a Circuit Switching (CS) domain network, the HSS receives the first information sent by the MME and the latest activity time of the user equipment.
9. The method of claim 7, wherein the called access domain information comprises a latest activity time of the UE and second information indicating that the UE performs voice service in a PS domain network; the HSS receives an IDA message sent by the MME and comprises the following steps:
if the user equipment is registered in a Packet Switching (PS) domain network, the HSS receives the second information sent by the MME and the latest activity time of the user equipment.
10. The method of claim 7, wherein the IDR message comprises current location information of the UE and status information of the UE; after the HSS sends the IDR message to the mobility management entity MME, the method comprises:
and the HSS receives an IDA message which is sent by the MME and used for inserting user data response, wherein the IDA message comprises the current position information of the user equipment and the state information of the user equipment.
11. The method according to any of claims 7 to 10, wherein the first device comprises a traffic centralization and continuity application server or application server; the service centralization and continuity application server provides voice service for the user equipment, and the application server provides application server for the user equipment.
12. A mobility management entity, characterized in that the mobility management entity comprises:
a receiver, configured to receive an IDR message, which is sent by a home subscriber server HSS and includes identification information of a user equipment, and inserts user data;
a processor, configured to determine, according to the identification information, whether a user equipment corresponding to the identification information is registered on a failed or restarted packet data gateway PGW, and whether a service of the user equipment is not recovered;
a transmitter, configured to send a deactivation and reactivation message of a corresponding packet data protocol PDP to the user equipment if the processor determines that the user equipment is registered on a failed or restarted PGW and a service of the user equipment is not recovered;
the IDR message comprises called access domain selection indication information;
the processor is further configured to determine called access domain information of the user equipment according to the IDR message;
the sender sends an insert subscriber data answer (IDA) message to the HSS, wherein the IDA message comprises called access domain information of the user equipment.
13. The mobility management entity according to claim 12,
the processor is further configured to determine registration network information of the user equipment.
14. The mobility management entity of claim 13, wherein the called access domain information comprises a latest activity time of the user equipment and first information indicating that the user equipment performs voice traffic in a circuit switched, CS, domain network; the sender is configured to send an insert subscriber data answer (IDA) message to the HSS, and includes:
if the user equipment is registered in a packet switched PS domain network and a circuit switched CS domain network, respectively, the transmitter is configured to transmit the first information and a latest active time of the user equipment to the HSS.
15. The mobility management entity according to claim 13, wherein the called access domain information comprises a latest activity time of the ue and second information indicating that the ue performs voice service in a PS domain network; the sender is configured to send an insert subscriber data answer (IDA) message to the HSS, and includes:
the transmitter is configured to transmit the second information and a latest active time of the user equipment to the HSS if the user equipment is registered in a packet switched PS domain network.
16. The mobility management entity of claim 12, wherein the IDR message includes current location information of the user equipment and status information of the user equipment; the processor is further configured to obtain location information of the user equipment and status information of the user equipment from the IDR message;
the sender is configured to send an insert subscriber data answer (IDA) message to the HSS, where the IDA message includes current location information of the UE and status information of the UE.
17. The mobility management entity according to any one of claims 12 to 16, wherein the processor is further configured to the MME obtain information of PGW failure or restart.
18. A home subscriber server, comprising:
the device comprises a receiver and a first device, wherein the receiver is used for receiving a User Data Request (UDR) message sent by the first device, and the UDR message comprises identification information of user equipment;
a sender, configured to send an IDR message for requesting user data insertion to a mobility management entity MME, where the IDR message includes identification information of the user equipment and called access domain selection indication information, so that the MME determines, according to the identification information, whether the user equipment corresponding to the identification information is registered on a failed or restarted packet data gateway PGW, and whether service data of the user equipment is recovered;
the receiver is further configured to receive an add user data acknowledgement (IDA) message sent by the MME, where the IDA message further includes called access domain information of the user equipment;
the transmitter is further configured to transmit a user data response UDA message to the first device according to the IDA message, where the UDA message includes information of a called access domain of the user device.
19. The home subscriber server of claim 18, wherein the called access domain information comprises a latest active time of the user equipment and first information for instructing the user equipment to perform a voice service in a circuit switched, CS, domain network; the receiver is configured to receive an add user data acknowledgement (IDA) message sent by the MME, and includes:
if the user equipment is respectively registered in a packet switched PS domain network and a circuit switched CS domain network, the receiver is configured to receive the first information sent by the MME and a latest activity time of the user equipment.
20. The home subscriber server of claim 18, wherein the called access domain information comprises a latest active time of the user equipment and second information for instructing the user equipment to perform a voice service in a packet switched PS domain network; the receiver is configured to receive an add user data acknowledgement (IDA) message sent by the MME, and includes:
if the user equipment is registered in a packet switched PS domain network, the receiver is configured to receive the second information and the latest activity time of the user equipment sent by the MME.
21. The home subscriber server of claim 18, wherein the IDR message includes current location information of the user equipment and status information of the user equipment;
the receiver is further configured to receive an add user data acknowledgement (IDA) message sent by the MME, where the IDA message includes current location information of the user equipment and state information of the user equipment.
22. A home subscriber server according to any of claims 18 to 21, wherein the first device comprises a traffic centralisation and continuity application server or application server; the service centralization and continuity application server provides voice service for the user equipment, and the application server provides application server for the user equipment.
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