WO2016062008A1

WO2016062008A1 - Disaster tolerance method, network element, server and storage medium

Info

Publication number: WO2016062008A1
Application number: PCT/CN2015/075237
Authority: WO
Inventors: 赵文贤; 陶运锋
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-10-21
Filing date: 2015-03-27
Publication date: 2016-04-28
Also published as: CN105592486A; CN105592486B

Abstract

A disaster tolerance method used in a Serving-Call Session Control Function (S-CSCF) network element side is disclosed in the embodiments of the present invention; the method comprises: receiving a user called request message; when determining a Session Border Controller (SBC) and/or Proxy-Call Session Call Function (P-CSCF) corresponding to the user is in a failure state according to the user called request message, transmitting a Service Allocation Request (SAR) message to a Home Subscriber Server (HSS), so as to realize a disaster tolerance process according to the SAR message; the SAR message carrying a P-CSCF disaster tolerance identification. A network element, a server, and a storage medium are also disclosed in the embodiments of the present invention.

Description

Disaster tolerance method and network element, server and storage medium

Technical field

The invention relates to a disaster recovery technology of a Proxy-Call Session Call Function (P-CSCF), and particularly relates to a disaster recovery method, a network element, a server, and a storage medium.

Background technique

The Internet Multimedia Subsystem (IMS) is the future development direction of multimedia communication and the most important component of the next generation network. The IMS is a subsystem supporting the Internet Protocol (IP) multimedia service proposed by the 3GPP (Third Generation Partnership Project), and the IMS is characterized by adopting a Session Initiation Protocol (SIP, The Session Initial Protocol system makes communication independent of access mode. In this way, multiple multimedia service control functions are separated from bearer capability, call and session separation, application and service separation, service and network separation, and mobile network and A variety of functions such as business integration between the Internet.

Generally, in order to ensure reliable operation, each entity in the IMS detects the availability status of the next hop network element by using a detection mechanism, and sends a subsequent message to the backup network of the next hop network element when the next hop network element fails. Meta- or low-priority network elements to implement disaster tolerance for each entity.

However, the existing session border controller (SBC, Session Border Controller) and/or P-CSCF fault detection methods all generate a large number of wireless connection setup and release signaling, thus, a large number of letters will be brought to the LTE network. To load, therefore, there is a need for a method that can achieve SBC and/or P-CSCF failure detection while reducing the signaling load to ensure the stability of the LTE network.

Summary of the invention

To solve the existing technical problems, the embodiments of the present invention provide a disaster tolerance method, a network element, a server, and a storage medium, which can implement SBC and/or P-CSCF fault detection and fault recovery, and reduce LTE network signaling. load.

The technical solution of the embodiment of the present invention is implemented as follows: The embodiment of the present invention provides a disaster tolerance method, where the method is applied to a service call session control function S-CSCF network element side; the method includes:

Receiving a user called request message;

Determining, according to the user called request message, that the session border controller SBC and/or the proxy call session function entity P-CSCF corresponding to the user are in a fault state, sending a service allocation request SAR message to the home subscriber server HSS, according to The SAR message implements a disaster tolerance process;

The SAR message carries the P-CSCF disaster tolerance identifier.

In the above solution, the determining, according to the user called request message, that the SBC and/or the P-CSCF corresponding to the user are in a fault state, sending a SAR message to the HSS, including:

Determining, according to the user called request message, status information of an SBC and/or a P-CSCF corresponding to the user, and sending the status information of the SBC and/or the P-CSCF to a fault state, sending the status information to the HSS SAR message;

Or, according to the user called request message, determining that the status information of the SBC and/or the P-CSCF corresponding to the user is not recorded, sending the called user to the SBC and/or the P-CSCF The service request message corresponding to the request message; after determining that the service response message corresponding to the service request message sent by the SBC and/or the P-CSCF is not received, the SAR message is sent to the HSS.

In the above solution, the method further includes:

Receiving a service allocation response SAA message generated by the HSS according to the SAR message; The SAA message carries a success response message or an error response message;

The success response information representation supports the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier; and the error response information indicates that the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier is not supported.

In the above solution, the method further includes:

When it is determined that the SAA message carries the success response information, start a timer;

The disaster recovery process corresponding to the P-CSCF disaster recovery identifier is awaited by the timer.

In the above solution, the disaster recovery processing corresponding to the P-CSCF disaster recovery identifier is performed according to the timer, including:

When the preset time of the timer is reached, and it is determined that the registration request of the user is not received, the user is called a failure message to release the session;

When the registration request of the user is received within the preset time of the timer and it is determined that the registration is completed, the current user called request is continued.

The embodiment of the present invention further provides a disaster tolerance method, where the method is applied to a home subscriber server HSS side, and the method includes:

Receiving a service allocation request SAR message, wherein the SAR message is generated by the serving call session control function S-CSCF network element according to the user called request message; and the SAR message carries the proxy call session function entity P-CSCF disaster tolerance identifier .

In the above solution, the method further includes:

And determining, according to the SAR message, that the mobility management entity MME corresponding to the user and/or the serving general packet radio service support node SGSN supports the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier, generating a service allocation response SAA Message

Sending the SAA message to the S-CSCF;

The SAA message carries the success response information, and the success response information indicates that the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier is supported.

In the above solution, the method further includes:

And generating, according to the SAR message, an SAA message when the MME and/or the SGSN corresponding to the user does not support the disaster tolerance function indicated by the P-CSCF disaster recovery identifier;

Sending the SAA message to the S-CSCF;

The SAA message carries the error response information; the error response information indicates that the disaster tolerance function indicated by the P-CSCF disaster recovery identifier is not supported.

In the above solution, the method further includes:

When it is determined that the MME and/or the SGSN supports the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier, sending an insert user data request IDR message to the MME and/or the SGSN, so that the MME and/or The SGSN releases the network connection corresponding to the user, so that the user re-establishes the network connection;

The P-CSCF disaster tolerance identifier is carried in the IDR message.

The embodiment of the present invention further provides a disaster tolerance method, where the method is applied to a mobility management entity MME and/or a serving general packet radio service support node SGSN side; the method includes:

Receiving an insertion user data request IDR message; the IDR message carries a proxy call session function entity P-CSCF disaster tolerance identifier;

Deactivating or detaching the network process corresponding to the user according to the P-CSCF disaster tolerance identifier in the IDR message, so that the user equipment corresponding to the user can re-establish a network connection.

The embodiment of the present invention further provides a first network element, where the first network element includes:

a first receiving unit, configured to receive a user called request message;

a first sending unit, configured to send a service to the home subscriber server HSS when the session border controller SBC and/or the proxy call session function entity P-CSCF corresponding to the user are in a fault state according to the user called request message Allocating a request SAR message;

The SAR message carries the P-CSCF disaster tolerance identifier.

In the foregoing solution, the first sending unit is further configured to determine, according to the user called request message, state information of an SBC and/or a P-CSCF corresponding to the user, and the SBC and/or When the status information of the P-CSCF is a fault state, the SAR message is sent to the HSS;

Or configured to, according to the user called request message, determine that status information of the SBC and/or the P-CSCF corresponding to the user is not recorded, and send the status to the SBC and/or the P-CSCF. The service request message corresponding to the user's called request message; after determining that the service response message corresponding to the service request message sent by the SBC and/or the P-CSCF is not received, the SAR message is sent to the HSS.

In the above solution, the first receiving unit is further configured to receive a service allocation response SAA message generated by the HSS according to the SAR message; the SAA message carries success response information, or error response information;

In the foregoing solution, the first network element further includes:

The timing unit is configured to: when the SAA message carries the success response information, start a timer, and wait for the disaster recovery process corresponding to the P-CSCF disaster recovery identifier according to the timer.

In the foregoing solution, the timing unit is further configured to: when the preset time of the timer is reached, and determine that the registration request of the user is not received, send a user called failure message, and release the current session;

It is further configured to continue the current user called request after receiving the registration request of the user and determining that the registration is completed within a preset time period of the timer.

An embodiment of the present invention further provides a home subscriber server, where the server includes:

a second receiving unit, configured to receive a service allocation request SAR message; wherein the SAR The message is that the service call session control function S-CSCF network element is generated according to the user called request message;

The determining unit is configured to determine that the SAR message carries the proxy call session function entity P-CSCF disaster tolerance identifier.

In the above solution, the server further includes:

a message generating unit, configured to determine, according to the SAR message, when the mobility management entity MME corresponding to the user and/or the serving general packet radio service support node SGSN supports the disaster tolerance function indicated by the P-CSCF disaster recovery identifier , generating a service allocation response SAA message;

a second sending unit, configured to send the SAA message to the S-CSCF;

In the above solution, the message generating unit is further configured to: when the MME and/or the SGSN corresponding to the user does not support the disaster tolerance function indicated by the P-CSCF disaster recovery identifier, generate the SAA according to the SAR message. Message

The second sending unit is further configured to send the SAA message to the S-CSCF;

In the above solution, the second sending unit is further configured to send an insertion to the MME and/or the SGSN when determining that the MME and/or the SGSN supports the disaster tolerance function indicated by the P-CSCF disaster recovery identifier. The user data requests an IDR message, so that the MME and/or the SGSN release the network connection corresponding to the user, so that the user re-establishes the network connection;

The P-CSCF disaster tolerance identifier is carried in the IDR message.

The embodiment of the present invention further provides a second network element, where the second network element includes:

a third receiving unit, configured to receive an insert user data request IDR message; the IDR message carries a proxy call session function entity P-CSCF disaster tolerance identifier;

a service implementation unit, configured to: according to the P-CSCF disaster tolerance identifier in the IDR message, Deactivating or detaching the network process corresponding to the user, so that the user equipment corresponding to the user can re-establish a network connection.

The disaster tolerance method and the network element, the server, and the storage medium in the embodiment of the present invention can send a service allocation to the HSS after determining that the primary SBC and/or the P-CSCF corresponding to the user are in a fault state in the user called request process. a SAR (Server-Assignment-Request) message, wherein the SAR message carries a P-CSCF disaster tolerance identifier, and the HSS determines the MME according to the P-CSCF disaster tolerance identifier carried in the SAR message. And if the SGSN supports the disaster recovery function indicated by the P-CSCF disaster recovery identifier, the MME and/or the SGSN are sent an IDR (Insert Subscriber Data Request) message carrying the P-CSCF disaster tolerance identifier. In order to enable the MME and/or the SGSN to initiate a deactivation or detachment network procedure, informing the user to re-establish a LTE connection, an IMS PDN connection, and an IMS re-registration, thereby implementing a P-CSCF disaster tolerance process; The periodic detection is not required between the user and the SBC and/or the P-CSCF. The S-CSCF (Serving-Call Session Control Function) is detected only after the CSCF receives the requested request from the called user. User pair Whether the active primary SBC and/or the P-CSCF are in a fault state, and after determining that the primary SBC and/or the P-CSCF corresponding to the user are in a fault state, implementing a P-CSCF disaster recovery recovery process based on the user Therefore, the embodiment of the present invention can perform fault detection on the primary SBC and/or the P-CSCF in a targeted manner, and when the primary SBC and/or the P-CSCF fails, gradually complete the primary SBC corresponding to the user. And/or the handover of the P-CSCF to the standby SBC and/or the P-CSCF, thus avoiding the signaling load brought by the detection signaling between the user and the SBC and/or the P-CSCF to the LTE network, and The signaling storm caused by the handover of all users to the standby SBC and/or the P-CSCF at the same time can be avoided, and the signaling load of the LTE network is reduced.

DRAWINGS

1 is a schematic diagram 1 of an implementation flow of a fault detection method in the prior art;

2 is a schematic diagram 2 of a flow of implementing a fault detection method in the prior art;

3 is a schematic flowchart 1 of an implementation process of a disaster tolerance method according to an embodiment of the present invention;

4 is a schematic structural diagram of a first network element according to an embodiment of the present invention;

FIG. 5 is a schematic diagram 2 of a flow of implementing a disaster tolerance method according to an embodiment of the present invention; FIG.

6 is a schematic structural diagram of a home subscriber server according to an embodiment of the present invention;

FIG. 7 is a schematic flowchart of an implementation process of the MME and/or the SGSN reporting the DR-capable function indicated by the P-CSCF disaster recovery identifier to the HSS according to the embodiment of the present invention;

FIG. 8 is a schematic diagram of a specific implementation of a disaster tolerance method according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic flowchart diagram of a specific implementation of a disaster tolerance method according to an embodiment of the present invention.

detailed description

In practical applications, there are usually two fault detection methods for SBC and/or P-CSCF, namely:

As shown in FIG. 1, the fault detection method of the first type of the SBC and/or P-CSCF includes:

The user equipment (UE, User Equipment) detects the availability of the SBC and/or P-CSCF by periodically transmitting a detection message when detecting the primary SBC and/or P-CSCF, or the high priority SBC and/or P- When the CSCF fails, the UE initiates a re-registration request to the SBC and/or the P-CSCF corresponding to the SBC and/or the P-CSCF or the SBC and/or the P-CSCF of the low priority to ensure the follow-up of the UE. The normal operation of the business;

As shown in FIG. 2, the second fault detection method of the SBC and/or P-CSCF includes:

Detecting whether the SBC and/or the P-CSCF are available through a Public Data Network (PDN) gateway (GW, GateWay), and when the PDN GW detects the SBC and/or P-CSCF failure, the UE is notified to trigger the heavy Registration to ensure the normal operation of the subsequent services of the UE.

However, the fault detection methods of the above two SBCs and/or P-CSCFs have the following problems: when the SBC and/or the P-CSCF are faulty, all UEs corresponding to the SBC and/or P-CSCF need to be performed. Re-register, establish a radio bearer during the re-registration process, at this time, will give The LTE network brings network signaling storms and network congestion; moreover, frequent timing detection messages between the UE and the SBC and/or the P-CSCF also cause the radio resources to repeatedly switch from the connected state to the idle state, thus generating A large number of wireless connections establish signaling and release signaling, resulting in a large amount of signaling load.

In order to solve the above problems, the embodiment of the present invention provides a disaster tolerance method, a network element, and a server. In order to understand the features and technical contents of the embodiments of the present invention in more detail, the implementation of the embodiment of the present invention is described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention.

Embodiment 1

3 is a schematic flowchart 1 of an implementation process of a disaster tolerance method according to an embodiment of the present invention; the method is applied to an S-CSCF network element side; as shown in FIG. 3, the method includes:

Step 301: Receive a user called request message.

Step 302: Send, according to the user called request message, that the SBC and/or the P-CSCF corresponding to the user are in a fault state, send a service allocation request to the home subscriber server (HSS, Home Subscriber Server) (SAR, Server- Assignment-Request message to implement a disaster tolerance process according to the SAR message;

The SAR message carries the P-CSCF disaster tolerance identifier.

Or, according to the user called request message, determining that the status information of the SBC and/or the P-CSCF corresponding to the user is not recorded, sending the called user to the SBC and/or the P-CSCF a service request message corresponding to the request message; after determining that the response message corresponding to the service request message sent by the SBC and/or the P-CSCF is not received, sending the SAR to the HSS Message.

In the above solution, the method further includes:

Receiving a service allocation response (SAA, Server-Assignment-Answer) message generated by the HSS according to the SAR message; the SAA message carrying success response information, or error response information;

In the above solution, the method further includes:

When the registration request of the user is received within a preset time of the timer and it is determined that the registration is completed, the current user called request is continued.

In this embodiment, the S-CSCF records the status information of the SBC and/or the P-CSCF. When the S-CSCF receives the user's called request message, the S-CSCF first searches for the record in the self. Status information of the SBC and/or P-CSCF corresponding to the user, when it is determined that the status information of the SBC and/or P-CSCF corresponding to the user is recorded, and the SBC and/or P corresponding to the user - When the CSCF is in the working state, continue the current user called request;

When it is determined that the status information of the SBC and/or the P-CSCF corresponding to the user is recorded, and the SBC and/or the P-CSCF corresponding to the user are in a fault state, at this time, the current user called request cannot be continued. The disaster recovery process is required, including:

The S-CSCF sends a SAR message to the HSS; the SAR message carries a P-CSCF disaster tolerance identifier;

Receiving, by the HSS, the SAR message, and determining, according to the P-CSCF disaster tolerance identifier in the SAR message, a mobility management entity (MME, Mobility Management Entity) corresponding to the user, and/or serving a general packet radio service (GPRS) The General Packet Radio Service (SGSN) supports the disaster recovery function indicated by the P-CSCF disaster recovery identifier. The MME and/or the SGSN corresponding to the user are required to support the P-CSCF disaster recovery. And generating the SAA message, and sending the SAA message to the S-CSCF; at this time, the SAA message carries the success response information; the success response information represents the MME and/or The SGSN supports the disaster tolerance function indicated by the P-CSCF disaster recovery identifier;

After the HSS determines that the MME and/or the SGSN corresponding to the user supports the disaster recovery function indicated by the P-CSCF disaster recovery identifier, sending an IDR message to the MME and/or the SGSN, where the IDR message carries The P-CSCF is configured to enable the MME and/or the SGSN to implement the PDN deactivation or detach process of the user according to the P-CSCF disaster tolerance identifier carried in the IDR message, so that the user is re-activated. Establish an LTE network connection and IMS re-registration, and continue to complete the current called user request after the registration is completed.

In this embodiment, the process for the MME and/or the SGSN to implement the PDN deactivation or detachment of the user includes: informing the user equipment corresponding to the user to re-establish an LTE network connection, an IMS PDN connection, and an IMS re-registration, As such, the user completes the re-registration through the alternate SBC and/or P-CSCF to continue completing the current user called request.

In this embodiment, when the S-CSCF receives the SAA message, and the SAA message carries the success response information, the timer is started, and thus, the current called request is completed according to the timer.

In this embodiment, when the S-CSCF does not record an SBC corresponding to the user, and/or Status information of the P-CSCF, at this time, the S-CSCF sends a service request message corresponding to the user called request message to the SBC and/or the P-CSCF corresponding to the user;

The S-CSCF determines that the S-CSCF determines that the response message corresponding to the service request message sent by the SBC and/or the P-CSCF corresponding to the user is not received within a preset time. The SBC and/or the P-CSCF corresponding to the user are in a fault state. In this case, the disaster recovery process is implemented, that is, the S-CSCF sends a SAR message to the HSS. Here, the SAR message carries the P-CSCF disaster tolerance. Logo.

When the S-CSCF determines that the SBC and/or the P-CSCF corresponding to the user are in a fault state, the state information of the SBC and/or P-CSCF corresponding to the user is stored in itself.

The embodiment of the present invention further provides a first computer readable storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the disaster tolerance method described in FIG. 3 above.

To implement the foregoing method, the embodiment of the present invention further provides a first network element. As shown in FIG. 4, the first network element includes:

The first receiving unit 41 is configured to receive a user called request message;

The first sending unit 42 is configured to send, according to the user called request message, the session border controller SBC and/or the proxy call session function entity P-CSCF corresponding to the user to be in a fault state, and send the message to the home subscriber server HSS. Service allocation request SAR message;

The SAR message carries the P-CSCF disaster tolerance identifier.

In the above solution, the first sending unit 42 is further configured to determine, according to the user called request message, state information of an SBC and/or a P-CSCF corresponding to the user, and the SBC and/or Or when the status information of the P-CSCF is a fault state, sending a SAR message to the HSS;

Or configured to, according to the user called request message, determine that status information of the SBC and/or the P-CSCF corresponding to the user is not recorded, and send the status to the SBC and/or the P-CSCF. The service request message corresponding to the user's called request message; when it is determined that the message is not received After the service response message corresponding to the service request message sent by the SBC and/or the P-CSCF, the SAR message is sent to the HSS.

In the above solution, the first receiving unit 41 is further configured to receive a service allocation response SAA message generated by the HSS according to the SAR message; the SAA message carries success response information, or error response information;

In the foregoing solution, the first network element further includes:

The timing unit 43 is configured to: when it is determined that the SAA message carries the success response information, start a timer, and wait for the disaster tolerance processing corresponding to the P-CSCF disaster tolerance identifier according to the timer.

In the foregoing solution, the timing unit 43 is further configured to: when the preset time of the timer is reached, and determine that the registration request of the user is not received, send a user called failure message, and release the current session;

In a practical application, the first receiving unit 41 may be implemented by a receiver in the first network element; the first sending unit 42 and the timing unit 43 may be processed by a central unit in the first network element. Unit (CPU, Central Processing Unit), or digital signal processing (DSP), or Field Programmable Gate Array (FPGA), etc.; the CPU, DSP, and FPGA can be built in Data query system.

Embodiment 2

FIG. 5 is a schematic flowchart of the implementation of the disaster tolerance method according to the embodiment of the present invention; the method is applied to the HSS side, as shown in FIG. 5, the method includes:

Step 501: Receive a SAR message, where the SAR message is generated by the S-CSCF network element according to the user called request message; the SAR message carries the P-CSCF disaster tolerance identifier.

In this embodiment, the SAR message is generated when the S-CSCF receives the user called request message and determines that the primary SBC and/or P-CSCF corresponding to the user is faulty.

In the above solution, the method further includes:

And generating, according to the SAR message, an SAA message when the MME and/or the SGSN corresponding to the user support the disaster tolerance function indicated by the P-CSCF disaster recovery identifier;

Sending the SAA message to the S-CSCF;

The SAA information carries the success response information; the successful response information representation supports the disaster tolerance function indicated by the P-CSCF disaster recovery identifier.

In the above solution, the method further includes:

Sending the SAA message to the S-CSCF;

In the above solution, the method further includes:

When it is determined that the MME and/or the SGSN supports the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier, sending an IDR message to the MME and/or the SGSN, so that the MME and/or the SGSN release the The network connection corresponding to the user, so that the user re-establishes the network connection;

The P-CSCF disaster tolerance identifier is carried in the IDR message.

In this embodiment, the HSS records information about whether the MME and/or the SGSN supports the disaster tolerance function indicated by the P-CSCF disaster recovery identifier. When the HSS receives the SAR message, it will be in itself. The MME and/or the SGSN corresponding to the user are supported to support the disaster recovery function indicated by the P-CSCF disaster recovery identifier, and when it is determined that the P-CSCF disaster tolerance identifier is supported, The HSS sends an IDR message to the MME and/or the SGSN, so that the MME and/or the SGSN implements the PDN deactivation or detach process of the user according to the IDR message, so as to enable the The user re-establishes the LTE network connection, the IMS PDN connection, and the IMS re-registration, and continues to complete the current called user request.

The embodiment of the present invention further provides a second computer readable storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the disaster tolerance method described in FIG. 5 above.

To implement the foregoing method, the embodiment of the present invention further provides a home subscriber server. As shown in FIG. 6, the server includes:

The second receiving unit 61 is configured to receive an SA message, where the SAR message is that the S-CSCF network element is a serving call session control function, and the S-CSCF network element is generated according to the user called request message;

The determining unit 62 is configured to determine that the SAR message carries the proxy call session function entity P-CSCF disaster tolerance identifier.

In the above solution, the server further includes:

The message generating unit 63 is configured to determine, according to the SAR message, that the mobility management entity MME corresponding to the user and/or the serving general packet radio service support node SGSN supports the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier Generating a service allocation response SAA message;

The second sending unit 64 is configured to send the SAA message to the S-CSCF;

In the foregoing solution, the message generating unit 63 is further configured to: when the MME and/or the SGSN corresponding to the user does not support the disaster tolerance function indicated by the P-CSCF disaster recovery identifier, generate, according to the SAR message, generate SAA message;

The second sending unit 64 is further configured to send the SAA message to the S-CSCF;

The SAA message carries error response information; the error response information is not characterized The disaster recovery function indicated by the P-CSCF disaster recovery identifier is used.

In the foregoing solution, the second sending unit 64 is further configured to send, to the MME and/or the SGSN, when determining that the MME and/or the SGSN supports the disaster tolerance function indicated by the P-CSCF disaster recovery identifier. Inserting a user data request IDR message, so that the MME and/or the SGSN release the network connection corresponding to the user, so that the user re-establishes a network connection;

The P-CSCF disaster tolerance identifier is carried in the IDR message.

In an actual application, the second receiving unit 61 may be implemented by a receiver in the home subscriber server; the second sending unit 64 may be implemented by a transmitter in the home subscriber server; the determining unit 62 and a message The generating unit 63 may be configured by a central processing unit (CPU, Central Processing Unit), or a digital signal processing (DSP), or a Field Programmable Gate Array (FPGA) in the home subscriber server. To achieve; the CPU, DSP, FPGA can be built into the data query system.

Embodiment 3

The embodiment of the present invention further provides a disaster tolerance method, where the method is applied to an MME and/or an SGSN side; the method includes:

Receiving an IDR message; the IDR message carries a P-CSCF disaster tolerance identifier;

The embodiment of the present invention further provides a third computer readable storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the disaster tolerance method described in Embodiment 3.

To implement the foregoing method, the embodiment of the present invention further provides a second network element, where the second network element includes:

a third receiving unit, configured to receive an insert user data request IDR message; Carrying the proxy call session function entity P-CSCF disaster tolerance identifier in the interest;

The service implementation unit is configured to implement, according to the P-CSCF disaster tolerance identifier in the IDR message, a deactivation or detachment network process corresponding to the user, so that the user equipment corresponding to the user can re-establish a network connection. .

In a practical application, the third receiving unit may be implemented by a receiver in the second network element; the service implementing unit may be a central processing unit (CPU, Central Processing Unit) in the second network element, or Digital signal processing (DSP, Digital Signal Processor), or Field Programmable Gate Array (FPGA), etc.; the CPU, DSP, FPGA can be built into the data query system.

Embodiment 4

FIG. 7 is a schematic flowchart of an implementation process of the MME and/or the SGSN reporting the disaster recovery function indicated by the P-CSCF disaster recovery identifier to the HSS according to the embodiment of the present invention; as shown in FIG. 7, the method includes:

Step 701: The UE sends an LTE attach request or a tracking area (TA) update request message to the MME and/or the SGSN.

Here, the MME and/or SGSN are the MME and/or SGSN corresponding to the UE.

Step 702: The MME and/or the SGSN generates a location update request message according to an LTE attach request or a tracking area (TA) update request message, and sends the location update request message to the HSS.

The location update request message carries the P-CSCF disaster tolerance identifier.

In this embodiment, the P-CSCF disaster tolerance identifier (such as P-CSCF Restoration) of the Supported-Features AVP in the Location Update Request (Update Location Request) message sent by the MME and/or the SGSN to the HSS is set to 1, As such, the MME and/or the SGSN support the disaster tolerance function indicated by the HSS-based P-CSCF disaster recovery identifier.

Step 703: The HSS generates a subscription data request message according to the location update request message, and sends the subscription data request message to the MME and/or the SGSN.

Specifically, the HSS determines, according to whether the P-CSCF disaster tolerance identifier in the location update request message is set, whether the MME and/or the SGSN supports the disaster tolerance function indicated by the HSS-based P-CSCF disaster recovery identifier. ;

In this embodiment, the HSS determines whether the MME and/or the SGSN supports the P-CSCF disaster tolerance identifier based on the HSS according to whether the P-CSCF Restoration of the Supported-Features AVP in the location update request message is set. In the present embodiment, the P-CSCF Restoration of the Supported-Features AVP in the location update request message is set to 1, so that the MME and/or the SGSN support the HS based on the HSS. - The disaster recovery function indicated by the CSCF disaster recovery indicator.

Step 704: The MME and/or the SGSN generates a subscription data response message according to the subscription data request message, and sends the subscription data response message to the HSS.

At this time, after receiving the subscription data response message, the HSS records that the MME and/or the SGSN corresponding to the user support the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier;

Step 705: The HSS sends an IDR message to the MME and/or the SGSN, so that the MME and/or the SGSN implement location update of the UE.

Step 706: After the MME and/or the SGSN implement the location update of the UE according to the IDR message, send an LTE attach or tracking area (TA) update complete message to the UE.

In this way, the current LTE attach or TA update process is completed, so that the UE can perform the subsequent IMS registration process normally.

Embodiment 5

FIG. 8 is a schematic diagram of a specific implementation of a disaster tolerance method according to an embodiment of the present invention; FIG. 9 is a schematic flowchart of a specific implementation of a disaster tolerance method according to an embodiment of the present invention;

In this embodiment, after the S-CSCF receives the user called request message, and determines that the status information of the SBC and/or the P-CSCF1 corresponding to the user is not recorded, the S-CSCF determines that the user is not recorded. Corresponding status information of the primary SBC and/or P-CSCF1, at this time, the S-CSCF A service request message corresponding to the user called request message is sent to the SBC and/or the P-CSCF1 to determine status information of the SBC and/or P-CSCF1; as shown in FIG. 8 and FIG. The method specifically includes:

Step 901: The S-CSCF determines that the SBC and/or P-CSCF1 are in a fault state.

At this time, the S-CSCF records status information of the primary SBC and/or P-CSCF1 corresponding to the user, and records the status information as a fault status.

Step 902: The S-CSCF sends a SAR message to the HSS, where the SAR message carries a P-CSCF disaster tolerance identifier.

In a specific application, the S-CSCF checks the registration status of the called user before sending the service request message to the SBC and/or the P-CSCF; if the registered user's registration status is registered, and the called party When the user's IMPU is related to only one IMPI, and the primary SBC and/or P-CSCF1 corresponding to the called user are in a fault state, the S-CSCF sends a SAR message carrying the SAR-Flags to the HSS, where The SAR message carries a P-CSCF disaster tolerance identifier and a service allocation type (Server-Assignment-Type) corresponding to the user called request message.

Step 903: After receiving the SAR message, the HSS determines, according to the P-CSCF disaster tolerance identifier in the SAR message, whether the MME and/or the SGSN corresponding to the user support the capacity indicated by the P-CSCF disaster recovery identifier. The disaster function, and feeding back the SAA message to the S-CSCF according to the determination result;

In this embodiment, the HSS searches for the MME and/or the SGSN corresponding to the user to support the disaster tolerance function indicated by the P-CSCF disaster recovery identifier.

In this embodiment, when the HSS determines that the MME and/or the SGSN corresponding to the user supports the disaster tolerance function indicated by the P-CSCF disaster recovery identifier, generate an SAA message, and send the SAA message to the S-CSCF; here, the SAA message carries a success response message; The success response information representation supports the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier;

When the HSS determines that the MME and/or the SGSN corresponding to the user does not support the disaster tolerance function indicated by the P-CSCF disaster recovery identifier, generate an SAA message, and send the SAA message to the S-CSCF; Here, the SAA message carries error response information; the error response information indicates that the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier is not supported.

In this embodiment, after the S-CSCF receives the SAA message, the S-CSCF registers the user regardless of whether the SAA message carries the success response information or the error response information. The status is set to unregistered. In this way, the network connection corresponding to the user is temporarily interrupted, and after waiting for the user to re-establish the network connection and IMS re-registration, the current called user request is continued.

In this embodiment, when the SAA message received by the S-CSCF carries the success response information, the local timer is started, and the local disaster timer waits for the disaster recovery processing corresponding to the disaster recovery identifier of the P-CSCF; specifically, When the registration request message of the user is not received within the preset time specified by the timer, the current called user is requested to send the corresponding called user to send the user called failure message, releasing the current session; After receiving the registration request of the user and determining that the registration is completed within the preset preset time, the current user called request is continued.

In this embodiment, when the SAA message received by the S-CSCF carries the error response information, the current called user is requested to send the corresponding called user to send the user called failure message.

Step 904: The HSS determines that the MME and/or the SGSN corresponding to the user supports the DR function indicated by the P-CSCF disaster recovery identifier, and sends an IDR message to the MME and/or the SGSN corresponding to the user, where The IDR message carries a P-CSCF disaster tolerance identifier;

Step 905: After the MME and/or the SGSN corresponding to the user receives the IDR message carrying the P-CSCF disaster recovery identifier, the detach process is implemented.

In this embodiment, the implementing the HS-based P-CSCF disaster recovery process includes:

The MME and/or SGSN corresponding to the user initiates a PDN deactivation or detach process, The network connection corresponding to the user is placed, and then the UE corresponding to the user is notified to re-establish an LTE network connection, an IMS PDN connection, and an IMS re-registration.

Step 906: The UE corresponding to the user sends an LTE attach request to the MME and/or the SGSN to complete the LTE attach.

Here, the IMS PDN connection is also completed while completing the LTE attach, thus laying the foundation for IMS re-registration.

Step 907: The UE corresponding to the user performs an IMS re-registration process.

Here, the UE can re-determine the SBC and/or P-CSCF corresponding to itself, also referred to as the standby SBC and/or the P-CSCF, in the process of performing registration, so that the user is called to successfully complete the call request. Lay the foundation.

Step 908: After the registration of the UE corresponding to the user is completed, the S-CSCF sends a service request message to the standby SBC and/or the P-CSCF2 currently serving the user, and continues to complete the current user called request.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. The work specified in one or more blocks of a flow or a flow and/or a block diagram of a flowchart Able device.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

The above is only an embodiment of the embodiments of the present invention, and it should be noted that those skilled in the art can make some improvements and refinements without departing from the principles of the embodiments of the present invention. Retouching should also be considered as the scope of protection of the embodiments of the present invention.

Industrial applicability

The embodiment of the present invention can send a service allocation request (SAR, Server-Assignment-Request) message to the HSS after determining that the primary SBC and/or the P-CSCF corresponding to the user are in a fault state in the user called request process. The SAR message carries the P-CSCF disaster tolerance identifier, and the HSS determines, according to the P-CSCF disaster tolerance identifier carried in the SAR message, that the MME and/or the SGSN support the P-CSCF disaster tolerance identifier. Sending an Insert User Data Request (IDR) message carrying the P-CSCF disaster tolerance identifier to the MME and/or the SGSN to enable the MME and/or the SGSN to initiate the MME and/or the SGSN. Activating or detaching the network procedure, notifying the user to re-establish the LET connection, the IMS PDN connection, and the IMS re-registration, thereby implementing the P-CSCF disaster tolerance process; since there is no need between the user and the SBC and/or the P-CSCF in the embodiment of the present invention Perform periodic detection only in the service call session control function (S-CSCF, Serving-Call Session Control Function, CSCF receives the called party) After the user requests, it is detected whether the primary SBC and/or the P-CSCF corresponding to the user are in a fault state, and after determining that the primary SBC and/or the P-CSCF corresponding to the user are in a fault state, The user performs the P-CSCF disaster recovery recovery process. Therefore, the embodiment of the present invention can perform fault detection on the primary SBC and/or the P-CSCF in a targeted manner, and when the primary SBC and/or the P-CSCF are faulty, step by step. Completing the handover of the primary SBC and/or the P-CSCF corresponding to the user to the standby SBC and/or the P-CSCF, so that detection signaling between the user and the SBC and/or the P-CSCF can be avoided to the LTE The signaling load brought by the network and the signaling storm caused by the handover of all users to the standby SBC and/or P-CSCF at the same time can reduce the signaling load of the LTE network.

Claims

A disaster tolerance method, the method is applied to a serving call session control function S-CSCF network element side; the method includes:

Receiving a user called request message;

Determining, according to the user called request message, that the session border controller SBC and/or the proxy call session function entity P-CSCF corresponding to the user are in a fault state, sending a service allocation request SAR message to the home subscriber server HSS, according to The SAR message implements a disaster tolerance process;

The SAR message carries the P-CSCF disaster tolerance identifier.
The method of claim 1, wherein the determining, according to the user called request message, that the SBC and/or the P-CSCF corresponding to the user are in a fault state, sending a SAR message to the HSS includes:

Determining, according to the user called request message, status information of an SBC and/or a P-CSCF corresponding to the user, and sending the status information of the SBC and/or the P-CSCF to a fault state, sending the status information to the HSS SAR message;

Or, according to the user called request message, determining that the status information of the SBC and/or the P-CSCF corresponding to the user is not recorded, sending the called user to the SBC and/or the P-CSCF The service request message corresponding to the request message; after determining that the service response message corresponding to the service request message sent by the SBC and/or the P-CSCF is not received, the SAR message is sent to the HSS.
The method of claim 1 or 2, wherein the method further comprises:

Receiving, by the HSS, a service allocation response SAA message generated according to the SAR message; the SAA message carrying success response information, or error response information;

The success response information representation supports the disaster tolerance indicated by the P-CSCF disaster recovery identifier. The error response information indicates that the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier is not supported.
The method of claim 3, wherein the method further comprises:

When it is determined that the SAA message carries the success response information, start a timer;

The disaster recovery process corresponding to the P-CSCF disaster recovery identifier is awaited by the timer.
The method according to claim 4, wherein the waiting for the disaster recovery processing corresponding to the P-CSCF disaster tolerance identifier according to the timer includes:

When the preset time of the timer is reached, and it is determined that the registration request of the user is not received, the user is called a failure message to release the session;

When the registration request of the user is received within the preset time of the timer and it is determined that the registration is completed, the current user called request is continued.
A disaster tolerance method, the method is applied to a home subscriber server HSS side, and the method includes:

Receiving a service allocation request SAR message, wherein the SAR message is generated by the serving call session control function S-CSCF network element according to the user called request message; and the SAR message carries the proxy call session function entity P-CSCF disaster tolerance identifier .
The method of claim 6 wherein the method further comprises:

And determining, according to the SAR message, that the mobility management entity MME corresponding to the user and/or the serving general packet radio service support node SGSN supports the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier, generating a service allocation response SAA Message

Sending the SAA message to the S-CSCF;

The SAA message carries the success response information, and the success response information indicates that the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier is supported.
The method of claim 6 wherein the method further comprises:

Determining, according to the SAR message, that the MME and/or the SGSN corresponding to the user do not support the The SAA message is generated when the disaster tolerance function indicated by the P-CSCF disaster recovery identifier is described.

Sending the SAA message to the S-CSCF;

The SAA message carries the error response information; the error response information indicates that the disaster tolerance function indicated by the P-CSCF disaster recovery identifier is not supported.
The method of claim 7 wherein the method further comprises:

When it is determined that the MME and/or the SGSN supports the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier, sending an insert user data request IDR message to the MME and/or the SGSN, so that the MME and/or The SGSN releases the network connection corresponding to the user, so that the user re-establishes the network connection;

The P-CSCF disaster tolerance identifier is carried in the IDR message.
A disaster tolerance method, the method being applied to a mobility management entity MME and/or a serving general packet radio service support node SGSN side; the method comprising:

Receiving an insertion user data request IDR message; the IDR message carries a proxy call session function entity P-CSCF disaster tolerance identifier;

Deactivating or detaching the network process corresponding to the user according to the P-CSCF disaster tolerance identifier in the IDR message, so that the user equipment corresponding to the user can re-establish a network connection.
A first network element, where the first network element includes:

a first receiving unit, configured to receive a user called request message;

a first sending unit, configured to send a service to the home subscriber server HSS when the session border controller SBC and/or the proxy call session function entity P-CSCF corresponding to the user are in a fault state according to the user called request message Allocating a request SAR message;

The SAR message carries the P-CSCF disaster tolerance identifier.
The network element according to claim 11, wherein the first sending unit is further configured to determine, according to the user called request message, that an SBC corresponding to the user is recorded and/or a status information of the P-CSCF, and when the status information of the SBC and/or the P-CSCF is a fault status, sending a SAR message to the HSS;

Or configured to, according to the user called request message, determine that status information of the SBC and/or the P-CSCF corresponding to the user is not recorded, and send the status to the SBC and/or the P-CSCF. The service request message corresponding to the user's called request message; after determining that the service response message corresponding to the service request message sent by the SBC and/or the P-CSCF is not received, the SAR message is sent to the HSS.
The network element according to claim 12, wherein the first receiving unit is further configured to receive a service allocation response SAA message generated by the HSS according to the SAR message; the SAA message carries a success response information, or an error Response information

The success response information representation supports the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier; and the error response information indicates that the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier is not supported.
The network element according to claim 13, wherein the first network element further comprises:

The timing unit is configured to: when the SAA message carries the success response information, start a timer, and wait for the disaster recovery process corresponding to the P-CSCF disaster recovery identifier according to the timer.
The network element according to claim 14, wherein the timing unit is further configured to send a user called failure message when the preset time of the timer is reached, and it is determined that the registration request of the user is not received. , release this session;

It is further configured to continue the current user called request after receiving the registration request of the user and determining that the registration is completed within a preset time period of the timer.
A home subscriber server, the server comprising:

a second receiving unit, configured to receive a service allocation request SAR message, where the SAR message is generated by the serving call session control function S-CSCF network element according to the user called request message;

The determining unit is configured to determine that the SAR message carries the proxy call session function entity P-CSCF disaster tolerance identifier.
The server of claim 16 wherein said server further comprises:

a message generating unit, configured to determine, according to the SAR message, when the mobility management entity MME corresponding to the user and/or the serving general packet radio service support node SGSN supports the disaster tolerance function indicated by the P-CSCF disaster recovery identifier , generating a service allocation response SAA message;

a second sending unit, configured to send the SAA message to the S-CSCF;

The SAA message carries the success response information, and the success response information indicates that the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier is supported.
The server according to claim 17, wherein the message generating unit is further configured to: according to the SAR message, determine that the MME and/or the SGSN corresponding to the user does not support the P-CSCF disaster tolerance identifier Generate SAA messages when the disaster recovery function is enabled.

The second sending unit is further configured to send the SAA message to the S-CSCF;

The SAA message carries the error response information; the error response information indicates that the disaster tolerance function indicated by the P-CSCF disaster recovery identifier is not supported.
The server according to claim 17, wherein the second sending unit is further configured to: when it is determined that the MME and/or the SGSN supports the disaster tolerance function indicated by the P-CSCF disaster tolerance identifier, The MME and/or the SGSN sends an Insert User Data Request IDR message to enable the MME and/or the SGSN to release the network connection corresponding to the user, so that the user re-establishes the network connection;

The P-CSCF disaster tolerance identifier is carried in the IDR message.
A second network element, where the second network element includes:

a third receiving unit, configured to receive an insert user data request IDR message; the IDR message carries a proxy call session function entity P-CSCF disaster tolerance identifier;

a service implementation unit, configured to: according to the P-CSCF disaster tolerance identifier in the IDR message, The user is deactivated or de-attached to the network process, so that the user equipment corresponding to the user can re-establish the network connection.
A first computer storage medium having stored therein computer executable instructions for performing the method of any one of claims 1 to 5.
A second computer storage medium having stored therein computer executable instructions for performing the method of any one of claims 6 to 9.
A third computer storage medium having stored therein computer executable instructions for performing the method of claim 10.