CN108540428B

CN108540428B - Service processing method, device and system

Info

Publication number: CN108540428B
Application number: CN201710121256.1A
Authority: CN
Inventors: 郭晓龙
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-03-02
Filing date: 2017-03-02
Publication date: 2021-10-01
Anticipated expiration: 2037-03-02
Also published as: CN108540428A

Abstract

The embodiment of the application provides a service processing method, equipment and a system, wherein the method comprises the following steps: after a service gateway S-GW caches an Internet protocol multimedia subsystem IMS service request message corresponding to a voice VOLTE terminal of long-term evolution, receiving an IMS service cancellation request message corresponding to the VOLTE terminal from a signaling plane channel, wherein the IMS service cancellation request message is sent by a packet data gateway P-GW; and the S-GW determines an IMS service request message corresponding to the IMS service cancellation request message in the cache and discards the IMS service request message. The method is used for preventing the VOLTE terminal from receiving repeated service request messages in the IMS domain and the CS domain.

Description

Service processing method, device and system

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a service processing method, device and system.

Background

With the continuous development of communication technology, the application of Voice Over LTE (VOLTE) terminals based on Long Term Evolution (LTE) is becoming more and more widespread, and the VOLTE terminals can obtain call and short message services through an internet protocol Multimedia Subsystem (IP Multimedia Subsystem, IMS) domain or a Circuit Switched (CS) domain.

Because a higher quality service can be provided to the VOLTE terminal through the IMS domain, when the VOLTE terminal is used as a requested terminal (a called terminal or a short message receiving terminal) and the VOLTE terminal accesses the IMS domain, the IMS system usually sends a request to the VOLTE terminal through the IMS domain first, and when the request cannot be sent to the VOLTE terminal through the IMS domain, sends a request to the VOLTE terminal through the CS domain.

In the prior art, when an IMS system sends a service request (which may be a call service request and a short message service request) to a VOLTE terminal through an IMS domain, the service request sent by the IMS system to the VOLTE terminal first reaches a Serving Gateway (S-GW) in an Evolved Packet Core (EPC), if there is a connection between the S-GW and the VOLTE terminal, the S-GW sends the service request to the VOLTE terminal, and if there is no connection between the S-GW and the VOLTE terminal, the S-GW caches the service request sent to the VOLTE terminal and requests a Mobility Management Entity (MME) to send a paging message to the VOLTE terminal, so that the VOLTE terminal returns a paging response to the MME and then establishes a connection with the S-GW. If the connection between the S-GW and the VOLTE is not established within the preset duration, so that the VOLTE terminal cannot feed back a service response message to the IMS system, the IMS system sends a request for canceling the Call service to the VOLTE terminal through an inquiry/Serving Call Session Control Function (I/S-CSCF) and a Proxy Call Session Control Function (P-CSCF) in a user plane channel, and sends a service request to the VOLTE terminal through the CS domain.

However, since the IMS system sends the request for canceling the call service to the VOLTE terminal as an SIP message through the I/S-CSCF and the P-CSCF in the user plane channel, the S-GW only transparently transfers or caches the request for canceling the call service, and the MME continues to page the VOLTE terminal, and after the VOLTE terminal establishes a connection with the S-GW, the S-GW sends the cached service request to the VOLTE terminal, which causes the VOLTE terminal to receive repeated service requests in the IMS domain and the CS domain, thereby causing poor user experience.

Disclosure of Invention

The embodiment of the application provides a service processing method, equipment and a system, which prevent a VOLTE terminal from receiving repeated service request messages in an IMS domain and a CS domain.

In a first aspect, an embodiment of the present application provides a service processing method, where an execution main body of the method is an S-GW, and after the S-GW caches an IMS service request message corresponding to a VOLTE terminal, the S-GW receives, from a signaling plane channel, an IMS service cancellation request message corresponding to the VOLTE terminal sent by a packet data gateway P-GW, and then the S-GW determines, in the cache, the IMS service request message corresponding to the IMS service cancellation request message, and discards the IMS service request message.

In the above process, since the S-GW receives the IMS service cancellation request message in the signaling plane channel, the S-GW may discard the IMS service request message corresponding to the VOLTE terminal, which is cached, according to the IMS service cancellation request message, thereby preventing the VOLTE terminal from receiving the service request message in the IMS domain, and further preventing the VOLTE terminal from receiving repeated service request messages in the IMS domain and the CS domain.

Optionally, when the types of the IMS service requests are different, the manner in which the S-GW receives the IMS service cancellation request message is also different, specifically, please refer to the following feasible implementation manners:

one possible implementation is: the IMS service request is an IMS call service request.

Optionally, the S-GW may receive, from the signaling plane channel, an IMS service cancellation request message corresponding to the VOLTE terminal sent by the P-GW through a feasible implementation manner as follows: after a proxy call session control function P-CSCF device sends an authentication authorization request AAR message carrying a cancellation identifier or a session termination request STR message carrying the cancellation identifier to a policy and charging rule function PCRF device, and the PCRF device sends a re-authentication request RAR message carrying the cancellation identifier to a data gateway P-GW according to the AAR message or the STR message, the S-GW receives an IMS service cancellation request message sent by the P-GW according to the RAR message.

Optionally, the AAR message or the STR message is sent by the P-CSCF device according to SIP CANCEL message carrying the cancellation identifier sent by the telephony application server TAS.

In this feasible implementation manner, after the S-GW discards the IMS service request message, the S-GW may further send an IMS service cancellation response message to the P-GW, so that the P-GW sends a re-authentication response RAA message to the PCRF device according to the IMS service cancellation response message, so that the PCRF device sends an authentication authorization response AAA message or a session termination response STA message to the P-CSCF device according to the RAA message.

One possible implementation is: the IMS service request is an IMS short message service request.

Optionally, the S-GW may receive an IMS service cancellation request message corresponding to the VOLTE terminal from the signaling plane channel through a feasible implementation manner as follows: after the P-CSCF device sends an Authentication Authorization Request (AAR) message carrying a cancellation identifier to the PCRF device and the PCRF device sends a re-authentication request (RAR) message carrying the cancellation identifier to the P-GW according to the AAR, the IMS service cancellation request message sent by the P-GW according to the RAR message is received.

Optionally, the AAR message is sent by the P-CSCF device according to the SIP CANCEL message carrying the cancel identifier sent by the TAS.

In this feasible implementation manner, after the S-GW discards the IMS service request message, the S-GW may further send an IMS service cancellation response message to the P-GW, so that the P-GW sends a re-authentication response RAA message to the PCRF device according to the IMS service cancellation response message, so that the PCRF device sends an authentication authorization response AAA message to the P-CSCF device according to the RAA message.

On the basis of any of the foregoing embodiments, optionally, the IMS service cancellation request message may be a Downlink data release message, or the IMS service cancellation request message may be an update bearer request UBR message carrying a cancellation identifier.

On the basis of any one of the above embodiments, optionally, the S-GW may determine, in the cache, an IMS service request message corresponding to the IMS service cancellation request message by: the S-GW determines a cache corresponding to the current connection, the current connection is used for transmitting IMS service request messages, the cache corresponding to the current connection comprises at least one IMS service request message corresponding to the VOLTE terminal, and the S-GW determines the messages in the cache corresponding to the current connection as IMS service request messages corresponding to IMS service cancel request messages.

On the basis of any of the foregoing embodiments, optionally, after the S-GW discards the IMS service request message, the S-GW may further send an indication message to stop paging the VOLTE terminal to the mobility management entity MME. So that the MME releases the resources occupied by paging the VOLTE terminal, thereby avoiding resource waste.

In a second aspect, an execution main body of the method is a P-CSCF device, and after the P-CSCF device receives SIP CANCEL messages carrying cancel identifiers and sent by a TAS to a VOLTE terminal, the P-CSCF device sends an IMS service cancel request message to an S-GW corresponding to the VOLTE terminal through a signaling plane channel according to a SIP CANCEL message, where the IMS service cancel request message is used to instruct the S-GW to discard an IMS service request message corresponding to the IMS service cancel request message.

In the process, the P-CSCF device sends the IMS service cancellation request message to the S-GW corresponding to the VOLTE terminal through the signaling plane channel, so that the S-GW can discard the cached IMS service request message corresponding to the VOLTE terminal according to the IMS service cancellation request message, the VOLTE terminal is prevented from receiving the service request message in the IMS domain, and the VOLTE terminal is prevented from receiving repeated service request messages in the IMS domain and the CS domain.

In a possible implementation manner, after the P-CSCF device sends the IMS service cancellation request message to the serving gateway S-GW corresponding to the VOLTE terminal through the signaling plane channel according to the SIP CANCEL message, the method further includes:

the P-CSCF equipment receives an IMS service cancellation response message which is sent by the S-GW and corresponds to the IMS service cancellation request message;

and the P-CSCF equipment sends an IMS service cancellation response message to a TAS (telephony application Server) corresponding to the P-CSCF equipment, wherein the IMS service cancellation response message is used for indicating the TAS to send a service request message to the VOLTE terminal through a Circuit Switching (CS) domain.

Optionally, when the types of the IMS service requests are different, the modes in which the P-CSCF device sends the IMS service cancellation request message to the S-GW corresponding to the VOLTE terminal through the signaling plane channel are also different, specifically, please refer to the following feasible implementation modes:

Optionally, the P-CSCF device may send the IMS service cancellation request message to the S-GW corresponding to the VOLTE terminal through the signaling plane channel in a feasible implementation manner as follows: and the P-CSCF equipment generates an Authentication Authorization Request (AAR) message carrying a cancellation identifier or a Session Termination Request (STR) message carrying the cancellation identifier according to the SIP CANCEL message, and the P-CSCF equipment sends the AAR message or the STR message to the PCRF equipment so that the PCRF equipment sends an IMS service cancellation request message to an S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the AAR message or the STR message.

Optionally, the sending, by the PCRF device, the IMS service cancellation request message to the S-GW corresponding to the VOLTE terminal through the signaling plane channel according to the AAR message or the STR message includes: and the PCRF equipment sends an RAR message carrying a cancellation identifier to the P-GW according to the AAR message or the STR message so that the P-GW sends an IMS service cancellation request message to the S-GW through a signaling plane channel according to the RAR message.

In this feasible implementation manner, the step of receiving, by the P-CSCF device, an IMS service cancellation response message corresponding to the IMS service cancellation request message, where the IMS service cancellation response message is sent by the S-GW, includes: after the S-GW sends an IMS service cancellation response message to the P-GW and the P-GW sends an RAA message to the PCRF equipment according to the IMS service cancellation response message, the P-CSCF equipment receives an authentication authorization response AAA message or a session termination response STA message sent by the PCRF equipment according to the RAA message.

Optionally, the P-CSCF device may send the IMS service cancellation request message to the S-GW corresponding to the VOLTE terminal through the signaling plane channel in a feasible implementation manner as follows: the P-CSCF equipment generates an Authentication Authorization Request (AAR) message carrying a cancel identifier according to the SIP CANCEL message; and the P-CSCF equipment sends the AAR message to the PCRF equipment so that the PCRF equipment sends an IMS service cancellation request message to the S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the AAR message.

Optionally, the sending, by the PCRF device, the IMS service cancellation request message to the S-GW corresponding to the VOLTE terminal through the signaling plane channel according to the AAR message includes: and the PCRF equipment sends an RAR message carrying a cancellation identifier to the P-GW according to the AAR message so that the P-GW sends an IMS service cancellation request message to the S-GW through a signaling plane channel according to the RAR message.

In this feasible implementation manner, the step of receiving, by the P-CSCF device, an IMS service cancellation response message corresponding to the IMS service cancellation request message, where the IMS service cancellation response message is sent by the S-GW, includes: after the S-GW sends an IMS service cancellation response message to the P-GW and the P-GW sends an RAA message to the PCRF equipment according to the IMS service cancellation response message, the P-CSCF equipment receives an authentication authorization response AAA message sent by the PCRF equipment according to the RAA message.

On the basis of any one of the above embodiments, optionally, the IMS service cancellation request message is a Downlink data release message, or the IMS service cancellation request message is an update bearer request UBR message carrying a cancellation identifier.

In a third aspect, an embodiment of the present application provides a service gateway, including a receiver, a processor, a memory, and a communication bus, where the memory is used to store program instructions, the communication bus is used to implement connection between various components, and the processor is used to read the program instructions in the memory and execute operations corresponding to the program instructions, where,

the receiver is used for receiving an IMS service cancellation request message corresponding to the VOLTE terminal from the packet data gateway P-GW after the processor caches an IMS service request message corresponding to the VOLTE terminal of the long-term evolution voice;

the processor is configured to determine, in the cache, an IMS service request message corresponding to the IMS service cancellation request message, and discard the IMS service request message.

In one possible implementation, the IMS service request is an IMS call service request; correspondingly, the receiver is specifically configured to:

after a proxy call session control function P-CSCF device sends an authentication authorization request AAR message carrying a cancellation identifier or a session termination request STR message carrying the cancellation identifier to a policy and charging rule function PCRF device, and the PCRF device sends a re-authentication request RAR message carrying the cancellation identifier to a data gateway P-GW according to the AAR message or the STR message, the IMS service cancellation request message sent by the P-GW according to the RAR message is received.

In another possible implementation, the AAR message or the STR message is sent by the P-CSCF device according to the SIP CANCEL message carrying the cancellation identifier sent by the telephony application server TAS.

In another possible embodiment, the service gateway further comprises a transmitter, wherein,

the sender is used for sending an IMS service cancellation response message to the P-GW after the processor discards the IMS service request message, so that the P-GW sends a re-authentication response RAA message to the PCRF equipment according to the IMS service cancellation response message, and the PCRF equipment sends an authentication authorization response AAA message or a session termination response STA message to the P-CSCF equipment according to the RAA message.

In another possible implementation, the IMS service request is an IMS short message service request; correspondingly, the receiver is specifically configured to:

after the P-CSCF device sends an Authentication Authorization Request (AAR) message carrying a cancellation identifier to the PCRF device and the PCRF device sends a re-authentication request (RAR) message carrying the cancellation identifier to the P-GW according to the AAR, the IMS service cancellation request message sent by the P-GW according to the RAR message is received.

In another possible implementation, the AAR message is sent by the P-CSCF device according to SIP CANCEL message carrying the cancel identifier sent by the TAS.

In another possible implementation, the transmitter is further configured to, after the processor discards the IMS service request message, send an IMS service cancellation response message to the P-GW, so that the P-GW sends a re-authentication response RAA message to the PCRF device according to the IMS service cancellation response message, so that the PCRF device sends an authentication authorization response AAA message to the P-CSCF device according to the RAA message.

In another possible implementation manner, the IMS service cancellation request message is a Downlink data release message, or the IMS service cancellation request message is an update bearer request UBR message carrying a cancellation identifier.

In another possible implementation, the processor is specifically configured to:

determining a cache corresponding to the current connection, wherein the current connection is used for transmitting IMS service request messages, and the cache corresponding to the current connection comprises at least one IMS service request message corresponding to the VOLTE terminal;

and determining the message in the cache corresponding to the current connection as the IMS service request message corresponding to the IMS service cancel request message.

In another possible embodiment, the transmitter is further configured to send an indication message to stop paging the VOLTE terminal to the mobility management entity MME after the processor discards the IMS service request message.

In a fourth aspect, an embodiment of the present application provides a proxy call session control function device, including a receiver, a transmitter, a memory and a communication bus, where the memory is used to store program instructions, and the communication bus is used to implement connections between components, where,

the receiver is used for receiving SIP CANCEL messages which are sent by a telephone application server TAS to a voice VOLTE terminal of long term evolution and carry cancel identifications;

the transmitter is configured to send, according to the SIP CANCEL message, an internet protocol multimedia subsystem IMS service cancellation request message to a serving gateway S-GW corresponding to the VOLTE terminal through a signaling plane channel, where the IMS service cancellation request message is used to instruct the S-GW to discard an IMS service request message corresponding to the IMS service cancellation request message.

In a possible implementation manner, the receiver is further configured to receive, after the transmitter sends the IMS service cancellation request message to the S-GW corresponding to the VOLTE terminal through the signaling plane channel according to the SIP CANCEL message, an IMS service cancellation response message sent by the S-GW and corresponding to the IMS service cancellation request message;

the sender is further configured to send an IMS service cancellation response message to a telephony application server TAS corresponding to the P-CSCF device, where the IMS service cancellation response message is used to instruct the TAS to send a service request message to the VOLTE terminal through the circuit switched CS domain.

In another possible embodiment, the device further comprises a processor, wherein,

the processor is used for generating an Authentication Authorization Request (AAR) message carrying a cancellation identifier or a Session Termination Request (STR) message carrying the cancellation identifier according to the SIP CANCEL message when the IMS service request is an IMS call service request;

the transmitter is specifically configured to send an AAR message or an STR message to the PCRF device, so that the PCRF device sends an IMS service cancellation request message to the S-GW corresponding to the VOLTE terminal through the signaling plane channel according to the AAR message or the STR message.

In another possible implementation, the transmitter is specifically configured to:

and sending an RAR message carrying a cancellation identifier to the P-GW according to the AAR message or the STR message so that the P-GW sends an IMS service cancellation request message to the S-GW through a signaling plane channel according to the RAR message.

In another possible implementation manner, the processor is further configured to generate an authentication authorization request AAR message carrying a cancellation identifier according to the SIP CANCEL message when the IMS service request is an IMS short message service request;

the transmitter is specifically configured to send the AAR message to the PCRF device, so that the PCRF device sends the IMS service cancellation request message to the S-GW corresponding to the VOLTE terminal through the signaling plane channel according to the AAR message.

and sending an RAR message carrying the cancellation identifier to the P-GW according to the AAR message so that the P-GW sends an IMS service cancellation request message to the S-GW through a signaling plane channel according to the RAR message.

In another possible implementation, the IMS service request is an IMS call service request; correspondingly, the receiver is specifically configured to:

after the S-GW sends an IMS service cancellation response message to the P-GW and the P-GW sends an RAA message to the PCRF equipment according to the IMS service cancellation response message, receiving an authentication authorization response (AAA) message or a session termination response (STA) message sent by the PCRF equipment according to the RAA message.

and after the S-GW sends an IMS service cancellation response message to the P-GW and the P-GW sends an RAA message to the PCRF equipment according to the IMS service cancellation response message, receiving an authentication authorization response AAA message sent by the PCRF equipment according to the RAA message.

In a fifth aspect, an embodiment of the present application provides a service processing apparatus, including a receiving module, a determining module, and a discarding module, where,

the receiving module is used for receiving an IMS service cancellation request message corresponding to the VOLTE terminal from a signaling plane channel, wherein the IMS service cancellation request message is sent by a packet data gateway P-GW;

the determining module is used for determining the IMS service request message corresponding to the IMS service cancel request message in the cache;

the discarding module is configured to discard the IMS service request message.

In one possible implementation, the IMS service request is an IMS call service request; correspondingly, the receiving module is specifically configured to:

after the proxy call session control function P-CSCF device sends an authentication authorization request AAR message carrying a cancellation identifier or a session termination request STR message carrying the cancellation identifier to the policy and charging rule function PCRF device, and the PCRF device sends a re-authentication request RAR message carrying the cancellation identifier to the data gateway P-GW according to the AAR message or the STR message, the IMS service cancellation request message sent by the P-GW according to the RAR message is received.

In another possible implementation, the AAR message or the STR message is sent by the P-CSCF device according to an SIP CANCEL message carrying the cancellation identifier sent by a telephony application server TAS.

In another possible embodiment, the apparatus further comprises a sending module, wherein,

the sending module is configured to send the IMS service cancellation response message to the P-GW after the discarding module discards the IMS service request message, so that the P-GW sends a re-authentication response RAA message to the PCRF device according to the IMS service cancellation response message, so that the PCRF device sends an authentication authorization response AAA message or a session termination response STA message to the P-CSCF device according to the RAA message.

In another possible implementation manner, the IMS service request is an IMS short message service request; correspondingly, the receiving module is specifically configured to:

and after the P-CSCF equipment sends an Authentication Authorization Request (AAR) message carrying a cancellation identifier to the PCRF equipment and the PCRF equipment sends a re-authentication request (RAR) message carrying the cancellation identifier to the P-GW according to the AAR, receiving the IMS service cancellation request message sent by the P-GW according to the RAR message.

In another possible implementation manner, the AAR message is sent by the P-CSCF device according to an SIP CANCEL message carrying the cancellation identifier sent by the TAS.

In another possible implementation manner, the sending module is further configured to send, after the discarding module discards the IMS service request message, the IMS service cancellation response message to the P-GW, so that the P-GW sends a re-authentication response RAA message to the PCRF device according to the IMS service cancellation response message, so that the PCRF device sends an authentication authorization response AAA message to the P-CSCF device according to the RAA message.

In another possible implementation manner, the IMS service cancellation request message is a Downlink data release message, or the IMS service cancellation request message is an update bearer request UBR message carrying the cancellation identifier.

In another possible implementation manner, the determining module is specifically configured to:

determining a cache corresponding to a current connection, wherein the current connection is used for transmitting the IMS service request message, and the cache corresponding to the current connection comprises at least one IMS service request message corresponding to the VOLTE terminal;

In another possible implementation manner, the sending module is further configured to send, to a mobility management entity MME, an indication message to stop paging the VOLTE terminal after the discarding module discards the IMS service request message.

In a sixth aspect, an embodiment of the present application provides a service processing apparatus, including a receiving module and a sending module, where,

the receiving module is used for receiving SIP CANCEL messages which are sent to a Voice Over Long Term Evolution (VOLTE) terminal by a Telephone Application Server (TAS) and carry cancellation identifications;

the sending module is configured to send an internet protocol multimedia subsystem IMS service cancellation request message to a serving gateway S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the SIP CANCEL message, where the IMS service cancellation request message is used to instruct the S-GW to discard an IMS service request message corresponding to the IMS service cancellation request message.

In a possible implementation manner, the receiving module is configured to receive, after the sending module sends an IMS service cancellation request message to an S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the SIP CANCEL message, an IMS service cancellation response message sent by the S-GW and corresponding to the IMS service cancellation request message;

the sending module is specifically configured to send the IMS service cancellation response message to a telephony application server TAS corresponding to the P-CSCF device, where the IMS service cancellation response message is used to instruct the TAS to send a service request message to the VOLTE terminal through a circuit switched CS domain.

In another possible embodiment, the apparatus further comprises a generating module, wherein,

the generating module is configured to generate, according to the SIP CANCEL message, the authentication and authorization request AAR message carrying the cancellation identifier or the session termination request STR message carrying the cancellation identifier when the IMS service request is an IMS call service request;

the sending module is specifically configured to send the AAR message or the STR message to the PCRF device, so that the PCRF device sends an IMS service cancellation request message to an S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the AAR message or the STR message.

In another possible implementation, the sending, by the PCRF device, an IMS service cancellation request message to an S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the AAR message or the STR message includes:

and the PCRF equipment sends an RAR message carrying the cancellation identifier to a P-GW according to the AAR message or the STR message, so that the P-GW sends the IMS service cancellation request message to the S-GW through a signaling plane channel according to the RAR message.

In another possible implementation manner, the generating module is further configured to generate, when the IMS service request is an IMS short message service request, the authentication authorization request AAR message carrying the cancellation identifier according to the SIP CANCEL message;

the sending module is further configured to send the AAR message to the PCRF device, so that the PCRF device sends an IMS service cancellation request message to an S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the AAR message.

Optionally, the sending module is specifically configured to send, according to the AAR message, a RAR message carrying the cancellation identifier to a P-GW, so that the P-GW sends the IMS service cancellation request message to the S-GW through a signaling plane channel according to the RAR message.

In another possible implementation manner, when the IMS service request is an IMS call service request, the receiving module is specifically configured to:

and after the S-GW sends the IMS service cancellation response message to the P-GW and the P-GW sends an RAA message to the PCRF equipment according to the IMS service cancellation response message, receiving an authentication authorization response (AAA) message or a session termination response (STA) message sent by the PCRF equipment according to the RAA message.

In another possible implementation manner, when the IMS service request is an IMS short message service request, the receiving module is specifically configured to:

and after the S-GW sends the IMS service cancellation response message to the P-GW and the P-GW sends an RAA message to the PCRF equipment according to the IMS service cancellation response message, receiving an authentication authorization response (AAA) message sent by the PCRF equipment according to the RAA message.

In a seventh aspect, an embodiment of the present application provides a service processing system, including the serving gateway in any one of the third aspects and the proxy call session control function device in any one of the fourth aspects.

According to the service processing method, device and system provided by the embodiment of the application, after the TAS sends the IMS service request message to the VOLTE terminal, if the TAS does not receive the IMS service response message sent by the VOLTE terminal within the preset time, the TAS carries SIP CANCEL message of canceling identifier to the P-CSCF device, so that the P-CSCF device sends the IMS service canceling request message to the S-GW through the PCRF device and the P-GW in the signaling plane channel, after the S-GW receives the IMS service canceling request message from the signaling plane channel, the S-GW analyzes and processes the IMS service canceling request message, and discards the IMS service request message corresponding to the IMS service canceling request message according to the IMS service canceling request message. In the above process, since the S-GW receives the IMS service cancellation request message in the signaling plane channel, the S-GW may discard the IMS service request message corresponding to the VOLTE terminal, which is cached, according to the IMS service cancellation request message, thereby preventing the VOLTE terminal from receiving the service request message in the IMS domain, and further preventing the VOLTE terminal from receiving repeated service request messages in the IMS domain and the CS domain.

Drawings

Fig. 1 is a schematic view of an application scenario of a service processing method according to an embodiment of the present application;

fig. 2 is a first interaction diagram of a service processing method according to an embodiment of the present application;

fig. 3 is a second interaction diagram of a service processing method according to an embodiment of the present application;

fig. 4 is a third interaction diagram of a service processing method according to an embodiment of the present application;

fig. 5 is a first schematic structural diagram of a service gateway according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a service gateway according to an embodiment of the present application;

fig. 7 is a first schematic structural diagram of a proxy call session control function device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a proxy call session control function device according to an embodiment of the present application;

fig. 9 is a first schematic structural diagram of a service processing apparatus according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a service processing apparatus according to an embodiment of the present application;

fig. 11 is a first schematic structural diagram of another service processing apparatus according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of another service processing apparatus according to an embodiment of the present application.

Detailed Description

Fig. 1 is a schematic view of an application scenario of a service processing method according to an embodiment of the present application. Please refer to fig. 1, which includes an IMS system 101, an EPC102, a CS domain 103, a database 104, and a VOLTE terminal 105. The IMS system 101 includes a Telephony Application Server (TAS), a Service Centralization and Continuity Application Server (SCC AS), an IP Short Message Gateway (IP-SM-GW), an I/S-CSCF device, and a P-CSCF device. EPC102 includes PCRF device, Packet Data Network Gateway (P-GW), S-GW, and MME. Devices in CS domain 103 include Visited Mobile Switching Center (VMSC) and Gateway Mobile Switching Center (GMSC)/Media Gateway Control Function (MGCF) devices. The database 104 includes a Home Location Register (HLR)/Home Subscriber Server (HSS). In addition, the dotted lines between the devices indicate that the devices can communicate with each other through the interface, and specific interface types between different devices are shown in fig. 1.

In the IMS system 101, TAS is used to provide basic services and supplementary services for multimedia telephony. The SCC AS is configured to provide a called Access Domain Selection (T-ADS) function to complete the called Access Domain Selection on the network side. The IP-SM-GW is used for providing the function of short message intercommunication between the IMS domain and the CS domain. The I-CSCF device is a unified entry point to the home IMS network for allocating or querying S-CSCF devices serving the user. The S-CSCF equipment is a central node of the IMS network and is responsible for registration, authentication, session, routing and service triggering of the user. The P-CSCF equipment is an entrance node of the VOLTE terminal accessed to the IMS network, the SIP signaling is forwarded between the VOLTE terminal and the home IMS network, session information is obtained from the SIP signaling and is supported to be issued to the PCRF equipment through an Rx interface, and the P-CSCF equipment is used for establishing audio and video special bearing.

In the EPC102, the PCRF device is a policy decision point in the EPC network, and is configured to perform a multi-dimensional policy decision based on a subscription service, a network configuration, a user access technology, and the like, and notify a PCEF (i.e., P-GW) of a decision result to implement. The P-GW is a user plane anchor point between a 3rd Generation Partnership Project (3 GPP) access Network and a non-3 GPP access Network, and the P-GW is an interface for connecting the 3GPP access Network with an external Public Data Network (PDN). The S-GW is a user plane anchor point between different access networks in the 3GPP, and the S-GW is an interface for shielding the different access networks in the 3 GPP. The MME is configured to provide mobility management for an EPC network control plane, including user context and mobility state management, and allocate a user temporary identity.

In the CS domain 103, the VMSC is configured to provide a function that the VOLTE terminal accesses the CS Network through a global enhanced mobile Radio Access Network (GSM EDGE Radio Access Network, GERAN)/universal mobile telecommunications system Terrestrial Radio Access Network (UMTS Terrestrial Radio Access Network, UTRAN). The MGCF/GMSC is used to provide interworking functions between the IMS Network and a conventional Public Switched Telephone Network (PSTN)/Public Land Mobile Network (Public Land Mobile Network, PLMN).

In the database 104, the HLR/HSS has functions of USCDB, HLR, IMS-HSS, SAE-HSS network function entities, and is used to store relevant data of the VOLTE terminal in a unified manner, so that the CS domain, IMS domain, and EPC domain can obtain user data in the HLR/HSS.

In the embodiment of the application, after the VOLTE terminal is accessed to the LTE network, if the MME initiates the joint location update procedure, the VOLTE terminal can be simultaneously registered in the CS domain and the IMS domain, and thus the VOLTE terminal can obtain a call and a short message service through the CS domain and the IMS domain.

In the embodiment of the present application, the VOLTE terminal 105 is a requested terminal (a called terminal or a short message receiving terminal), and the VOLTE terminal 105 currently accesses the IMS domain through an LTE network with a weak network signal. When the VOLTE terminal 105 is requested, the IMS system first sends a request to the VOLTE terminal through the IMS domain, and when the IMS system cannot successfully send a request to the VOLTE terminal 105 through the IMS domain due to a weak LTE network signal, the IMS system sends a request to the VOLTE terminal 105 through the CS domain. After the IMS system sends an IMS service request message to the VOLTE terminal 105 through the IMS domain, the IMS service request message may first reach the S-GW, and if there is no network connection between the S-GW and the VOLTE terminal, the S-GW caches the IMS service request message. If the IMS system does not receive the IMS service response message sent by the VOLTE terminal 105 within the preset duration, the IMS service cancellation request message is sent to the S-GW through the PCRF device, so that the S-GW discards the cached IMS service request message, and resends the service request message to the VOLTE terminal 105 through the CS domain. Thus, after the S-GW establishes network connection with the VOLTE terminal 105, the S-GW does not send an IMS service request message to the VOLTE terminal 105, which avoids the VOLTE terminal 105 receiving repeated service request messages in the CS domain and the IMS domain.

The technical means shown in the present application will be described in detail below with reference to specific examples. It should be noted that the following technical embodiments may be combined with each other, and the same or similar contents are not described in detail in different embodiments.

Fig. 2 is a first interaction diagram of a service processing method according to an embodiment of the present application. Referring to fig. 2, the method may include:

s201, after the TAS sends an IMS service request message to the VOLTE terminal, if the TAS does not receive an IMS service response message sent by the VOLTE terminal within a preset time length, the TAS sends SIP CANCEL messages which are corresponding to the VOLTE terminal and carry cancellation marks to the P-CSCF through the I/S-CSCF.

In the embodiment of the present application, the service request message may be a call service request message or a short message service request message. When the TAS receives a service request initiated by another terminal (which may be a fixed telephone or any mobile terminal) to the VOLTE terminal, the TAS sends an IMS service request message to the VOLTE terminal, where the IMS service request message reaches the S-GW before reaching the VOLTE terminal. After the S-GW receives the IMS service request message, if the S-GW and the VOLTE terminal are not connected through the network, the S-GW firstly caches the IMS service request message and requests the MME to page the VOLTE terminal. If paging of the VOLTE terminal fails within the preset time, the VOLTE terminal cannot receive an IMS service request message sent by the S-GW and cannot send an IMS service response message to the TAS.

And if the TAS does not receive the IMS service response message sent by the VOLTE terminal within the preset time length, the TAS sends SIP CANCEL messages which are corresponding to the VOLTE terminal and carry the cancel identifier to the P-CSCF equipment through the I/S-CSC equipment F. Optionally, the cancellation identifier may be a new SIP header field added in the SIP CANCEL message, or a specific value of a SIP header field parameter in the SIP CANCEL message, for example, Reason: SIP; cause 408, where Reason is the SIP header, cause is a parameter of the header, and 408 is used as a de-identity.

And S202, the P-CSCF equipment sends an IMS service cancellation request message to the S-GW corresponding to the VOLTE terminal through the PCRF equipment on a signaling plane channel according to the SIP CANCEL message.

In the practical application process, the P-CSCF device may send a message to the S-GW through the user plane channel, or may send a message through the signaling plane channel. The messages received by the S-GW on the user plane channel are usually multimedia messages, and the S-GW generally only transparently transmits the messages received from the user plane channel. The messages received by the S-GW on the signaling plane channel are typically control messages, and the S-GW typically processes the messages received from the signaling plane channel.

Optionally, when the P-CSCF device needs to send a message to the S-GW through the user plane tunnel, the P-CSCF device may send the message to the P-GW through the SGi interface, and the P-GW sends the message received from the SGi interface to the S-GW through the user plane tunnel. When the P-CSCF equipment needs to send a message to the S-GW through a signaling plane channel, the P-CSCF equipment can send the message to the PCRF equipment through an Rx interface, the PCRF equipment sends the message to the P-GW through a Gx interface, and the P-GW sends the message received from the Gx interface to the S-GW on a signaling plane.

The P-CSCF equipment receives SIP CANCEL information which is sent by the TAS to the P-CSCF equipment through the I/S-CSCF equipment and carries a cancel identifier through the Mw interface, the P-CSCF equipment generates an IMS service cancel request message according to the cancel identifier in the SIP CANCEL information, and sends the IMS service cancel request message to the PCRF equipment through the Rx interface, so that the PCRF equipment sends the IMS service cancel request message to the S-GW through the P-GW on a signaling plane channel.

Optionally, if the IMS service Request is an IMS call service Request, after receiving the SIP CANCEL message carrying the cancellation identifier and sent by the TAS, the P-CSCF device may generate an Authentication Authorization Request (AAR) message carrying the cancellation identifier or a Session Termination Request (STR) message carrying the cancellation identifier according to the SIP CANCEL message, and send the AAR message or the STR message to the PCRF device through the Rx interface, the PCRF device generates a Re-authentication Request (Re-Auth-Request, RAR) message carrying the cancellation identifier according to the AAR message or the STR message, and sends the RAR message to the P-GW, and the P-GW generates an IMS service cancellation Request message according to the RAR message, and sends the IMS service cancellation Request message to the S-GW.

Optionally, if the IMS service Request is an IMS short message service Request, after receiving the SIP CANCEL message carrying the cancellation identifier sent by the TAS, the P-CSCF device may generate an Authentication Authorization Request (AAR) message carrying the cancellation identifier according to the SIP CANCEL message, and send the AAR message to the PCRF device through the Rx interface, the PCRF device generates an RAR message carrying the cancellation identifier according to the AAR message, and sends the RAR message to the P-GW, and the P-GW generates an IMS service cancellation Request message according to the RAR message, and sends the IMS service cancellation Request message to the S-GW.

Optionally, the IMS service cancellation request message may be a Downlink data release message, or an Update Bearer Request (UBR) message carrying a cancellation identifier.

S203, the S-GW discards the cached IMS service request message corresponding to the IMS service cancel request message.

After S-GW receives IMS service cancel request message, S-GW obtains IMS service request message corresponding to IMS service cancel request message and discards IMS service request message.

Optionally, when the S-GW caches the IMS service request message, the S-GW may store messages corresponding to different VOLTE terminals in different caches (for example, different message queues), and correspondingly, the S-GW may determine a cache corresponding to a current connection (a network connection for transmitting an IMS service request to the VOLTE terminal), where the cache corresponding to the current connection is used to store at least one IMS service request message corresponding to the VOLTE terminal. For example, the S-GW may store messages corresponding to different VOLTE terminals in different cache queues, and when the S-GW needs to discard an IMS service request message corresponding to a VOLTE terminal, the S-GW may determine a current connection corresponding to the VOLTE terminal, determine a cache queue corresponding to the current connection, and delete a message in the cache queue or delete the cache queue.

It should be noted that, because there is a message retransmission mechanism on the IMS network side, after the P-CSCF device first sends an IMS service request message to the VOLTE terminal, if an IMS service response message sent by the VOLTE terminal is not received, the P-CSCF device retransmits the IMS service request message to the VOLTE terminal every 0.5 second, 1 second, 2 seconds, 4 seconds, 8 seconds, and 16 seconds, and therefore, a cache corresponding to the VOLTE terminal may include a plurality of IMS service request messages.

And S204, the S-GW sends an IMS service cancellation response message to the TAS through the PCRF equipment and the P-CSCF equipment.

After the S-GW discards the IMS service request message corresponding to the IMS service cancellation request message, the S-GW generates an IMS service cancellation response message corresponding to the IMS service cancellation request message, and sends the IMS service cancellation response message to the TAS through the PCRF device and the P-CSCF device.

Optionally, if the IMS service request is an IMS call service request, after the S-GW sends an IMS service cancellation response message to the P-GW, the P-GW generates a Re-authentication Response (RAA) message according to the IMS service cancellation response message, and sends the RAA message to the PCRF device, the PCRF device generates an authentication authorization response (AAA) message or a Session Termination response (STA) message according to the RAA message, and sends the AAA message or the STA message to the P-CSCF device. And the P-CSCF device generates a 200ok for CANCEL response according to the AAA message or the STA message, and sends the 200ok for CANCEL response to the TAS through the I/S-CSCF device, wherein the 200ok for CANCEL response corresponds to the IMS service cancellation response message sent by the TAS to the VOLTE terminal.

Optionally, if the IMS service request is an IMS short message service request, after the S-GW sends an IMS service cancellation response message to the P-GW, the P-GW generates a Re-authentication response (Re-Auth-Answer, RAA) message according to the IMS service cancellation response message, and sends the RAA message to the PCRF device, the PCRF device generates an AAA message according to the RAA message, and sends the AAA message to the P-CSCF device, the P-CSCF device generates a 200ok for CANCEL response according to the AAA message, and sends the 200ok for CANCEL response to the TAS through the I/S-CSCF device.

Optionally, after the S-GW sends the IMS service cancellation response message to the TAS, the S-GW may send an indication message to stop paging the VOLTE terminal to the MME, so that the MME releases the resource occupied by paging the VOLTE terminal, thereby avoiding resource waste.

And S205, the TAS sends a service request message to the VOLTE terminal through the CS domain according to the IMS service cancellation response message.

Optionally, when the service request is a call service request, the TAS may send a call request message to the VOLTE terminal through the CS domain in a feasible implementation manner as follows: the TAS may obtain a CS routing Number (CSRN) corresponding to a VMSC in which the VOLTE terminal is located in the HSS, and call the VMSC in the CS domain through the S-CSCF, the MGCF/GMSC according to the CSRN, so that the VMSC sends a SETUP message to the VOLTE terminal, so as to send a service request message to the VOLTE terminal through the CS domain, so that the VOLTE terminal receives an incoming call alert in the CS domain.

Optionally, when the service request is a short message service request, the IMS service request message is a short message, and the TAS may send the short message to the VOLTE terminal through the CS domain in a feasible implementation manner as follows: the TAS may acquire the address of the VMSC where the VOLTE terminal is located in the HLR, and forward the short message to the VMSC through the address of the VMSC, so that the VMSC sends the short message to the VOLTE terminal.

In the service processing method provided in the embodiment of the present application, after the TAS sends the IMS service request message to the VOLTE terminal, if the TAS does not receive an IMS service response message sent by the VOLTE terminal within a preset time period, the TAS carries SIP CANCEL message of canceling identifier to the P-CSCF device, so that the P-CSCF device sends the IMS service canceling request message to the S-GW through the PCRF device and the P-GW in the signaling plane channel, after the S-GW receives the IMS service canceling request message from the signaling plane channel, the S-GW performs analysis processing on the IMS service canceling request message, and discards the IMS service request message corresponding to the IMS service canceling request message according to the IMS service canceling request message. In the above process, since the S-GW receives the IMS service cancellation request message in the signaling plane channel, the S-GW may discard the IMS service request message corresponding to the VOLTE terminal, which is cached, according to the IMS service cancellation request message, thereby preventing the VOLTE terminal from receiving the service request message in the IMS domain, and further preventing the VOLTE terminal from receiving repeated service request messages in the IMS domain and the CS domain.

Based on the embodiment shown in fig. 2, the following describes in further detail the service processing procedure shown in the embodiment of fig. 2 by the embodiment shown in fig. 3.

Fig. 3 is a second interaction diagram of a service processing method according to an embodiment of the present application. Referring to fig. 3, the method may include:

s301, when the TAS receives a service request initiated by other terminals to the VOLTE terminal, the TAS judges whether the VOLTE terminal is accessed to the IMS domain.

If yes, go to step S302.

If not, go to S320.

Optionally, the TAS may determine whether the VOLTE terminal accesses the IMS domain by performing a T-ADS procedure.

And S302, the TAS sends an IMS service request message corresponding to the VOLTE terminal to the P-CSCF equipment through the I/S-CSCF equipment.

And S303, the P-CSCF equipment sends the IMS service request message to the S-GW through the P-GW.

And S304, the S-GW judges whether connection exists between the S-GW and the VOLTE terminal.

If yes, S305 is performed.

If not, go to S306.

S305, the S-GW sends an IMS service request message to the VOLTE terminal.

S306, the S-GW caches the IMS service request message to a cache message queue corresponding to the VOLTE terminal.

S307, the S-GW requests the MME to page the VOLTE terminal.

S308, the MME pages the VOLTE terminal.

And S309, if the TAS does not receive the IMS service response message of the VOLTE terminal within the preset time length, the TAS sends SIP CANCEL messages which are corresponding to the VOLTE terminal and carry the cancel identifier to the P-CSCF equipment through the I/S-CSCF equipment.

And S310, the P-CSCF equipment sends the AAR message carrying the cancel identifier to the PCRF equipment through the Rx interface.

Certainly, in S310, if the IMS service request is a call service request, the P-CSCF device may also send an STR message carrying the cancellation identifier to the PCRF device through the Rx interface.

S311, the PCRF device sends the RAR message carrying the cancellation identifier to the P-GW through the Gx interface.

S312, P-GW sends UBR message carrying cancel identification to S-GW in signaling plane channel through S5 interface.

Of course, in S312, the P-GW may also send a new addition message Downlink data release to the S-GW through the S5 interface.

And S313, the S-GW deletes the SIM service request message in the cache message queue corresponding to the VOLTE terminal according to the UBR message.

S314, S-GW sends IMS service cancel response message to P-GW through S5 interface.

S315, S-GW sends the stop paging message to MME.

It should be noted that S314 and S315 may be executed simultaneously or sequentially, and this is not specifically limited in this embodiment of the application.

S316, the MME stops paging the VOLTE terminal.

And S317, the P-GW sends the RAA message to the PCRF equipment through the Gx interface.

S318, the PCRF equipment sends the AAA message to the P-CSCF equipment through the Rx interface.

It should be noted that, when the IMS service request is a call service request, and the P-CSCF device sends an STR message to the PCRF device in S310, in S318, the PCRF device sends the STA message through the message sent to the P-CSCF device.

S319, the P-CSCF device sends 200ok for CANCEL response to the TAS through the I/S-CSCF device.

S320, the TAS sends a service request message to the VOLTE terminal through the CS domain.

Based on any of the above embodiments, taking the IMS service request as an IMS call service request as an example, the service processing procedure shown in the above embodiment is further described in detail through the embodiment shown in fig. 4.

Fig. 4 is a third interaction diagram of a service processing method according to an embodiment of the present application. Referring to fig. 4, the method may include:

s401, after the TAS receives the call request of the VOLTE terminal, the TAS sends the IMS call request to the I/S-CSCF equipment.

And S402, the I/S-CSCF equipment sends a position information request query to the HSS according to the IMS call request so as to request to acquire the position information of the VOLTE terminal.

S403, the HSS sends a position information query response to the I/S-CSCF equipment, and the position information query response carries the position information of the VOLTE terminal.

And S404, the I/S-CSCF equipment sends an IMS call response to the TAS, and the IMS call response carries the position information of the VOLTE terminal.

S405, the SCC AS sends a user data request to the HSS so AS to request to acquire the capability and the access domain of the VOLTE terminal.

Optionally, the capability of the VOLTE terminal may indicate whether the VOLTE terminal has a function of accessing the IMS domain, whether the VOLTE terminal has a function of accessing the LTE network, or not. In an actual application process, the SCC AS may also obtain other information of the VOLTE terminal from the HSS, which is not specifically limited in this embodiment of the present application.

S406, the HSS sends a user data response to the SCC AS, and the user data response carries the capability and the access domain of the VOLTE terminal.

Through S401 to S406, the TAS acquires attribute information of the VOLTE terminal, for example, location information of the VOLTE terminal, capability of the VOLTE terminal, an access domain of the VOLTE terminal, and the like, so that the TAS can initiate a call to the VOLTE terminal according to the attribute information of the VOLTE terminal. Assuming that the SCC AS determines that the access domain of the VOLTE terminal is the IMS domain, S407-S432 are performed.

S407, the TAS sends an IMS call request to the I/S-CSCF equipment.

S408, the I/S-CSCF device sends an IMS call request to the P-CSCCF device.

S409, the P-CSCCF device sends an IMS call request to the P-GW.

S410, the P-GW sends an IMS call request to the S-GW.

And S411, judging that the network connection with the VOLTE terminal is not available by the S-GW, and requesting the MME by the S-GW to page the VOLTE terminal.

And S412, if the MME successfully pages the VOLTE terminal, sending a paging response to the S-GW.

S413, after S411, MME sends paging to E-UTRAN.

S414, E-UTRAN sends paging to VOLTE terminal.

After S414, assuming that the MME fails to page the VOLTE terminal successfully, the VOLTE terminal cannot send an IMS call response to the TAS, resulting in the TAS waiting for the VOLTE terminal to respond to timeout, then S415-S432 are performed.

S415, the TAS sends SIP CANCEL information carrying cancel identification to the I/S-CSCF equipment.

And S416, the I/S-CSCF equipment sends SIP CANCEL information carrying the canceling identifier to the P-CSCF equipment.

And S417, the P-CSCF equipment sends the AAR message carrying the cancel identifier to the PCRF equipment.

Certainly, in S417, the P-CSCF device may also send an STR message carrying the cancellation identifier to the PCRF device.

S418, PCRF equipment sends the RAR message carrying the cancellation identifier to P-GW.

And S419, the P-GW sends UBR information carrying the cancel identification to the S-GW through a signaling plane channel.

S420, S-GW sends call service cancel response message to P-GW.

And S421, the P-GW sends an RAA message to the PCRF equipment.

S422, the PCRF device sends the AAA message to the P-CSCF device.

Of course, if the P-CSCF device sends the STR message carrying the cancellation flag to the PCRF device in S417, the PCRF sends the STA message to the P-CSCF device.

S423, the P-CSCF device sends 200for CANCEL response to the I/S-CSCF device.

S424, the I/S-CSCF device sends 200for CANCEL response to the TAS.

S425, the TAS sends a user data request to the HSS to request the CSRN corresponding to the VMSC where the VOLTE terminal is located.

S426, the HSS sends a user data response to the TAS, and the user data response carries the CSRN corresponding to the VMSC where the VOLTE terminal is located.

S427, TAS sends a CS call request to the I/S-CSCF device.

S428, the I/S-CSCF device sends a CS call request to the MGCF/GMSC.

S429, MGCF/GMSC sends BICC IAM request to VMSC.

S430, the VMSC sends a SETUP message to GERAN/UTRAN.

S431, GERAN/UTRAN sends SETUP message to VOLTE terminal.

And S432, the VOLTE terminal receives the incoming call prompt.

In the above process, when the TAS cannot successfully call the VOLTE terminal through the IMS domain, the S-GW is notified to discard the cached IMS service request message and call the VOLTE terminal in the CS domain, thereby preventing the VOLTE terminal from receiving repeated IMS call requests in the IMS domain and the CS domain.

Fig. 5 is a first schematic structural diagram of a service gateway according to an embodiment of the present application. Referring to fig. 5, the service gateway includes a receiver 11, a processor 12, a memory 13 and a communication bus 14, where the memory 13 is used to store program instructions, the communication bus 14 is used to implement connections between components, the processor 12 is used to read the program instructions in the memory 13 and execute operations corresponding to the program instructions, where,

the receiver 11 is configured to receive, from a signaling plane channel, an IMS service cancellation request message corresponding to a Voice Over Long Term Evolution (VOLTE) terminal sent by a packet data gateway (P-GW), after the processor 12 caches an IMS service request message corresponding to the VOLTE terminal;

the processor 12 is configured to determine, in the cache, an IMS service request message corresponding to the IMS service cancellation request message, and discard the IMS service request message.

The service gateway provided in the embodiment of the present application may execute the technical solution shown in the foregoing method embodiment, and the implementation principle and the beneficial effect thereof are similar, which are not described herein again.

In one possible implementation, the IMS service request is an IMS call service request; accordingly, the receiver 11 is specifically configured to:

Fig. 6 is a schematic structural diagram of a service gateway according to an embodiment of the present application. On the basis of the embodiment shown in fig. 5, referring to fig. 6, the service gateway further comprises a transmitter 15, wherein,

the transmitter 15 is configured to, after the processor 12 discards the IMS service request message, send the IMS service cancellation response message to the P-GW, so that the P-GW sends a re-authentication response RAA message to the PCRF device according to the IMS service cancellation response message, so that the PCRF device sends an authentication authorization response AAA message or a session termination response STA message to the P-CSCF device according to the RAA message.

In another possible implementation manner, the IMS service request is an IMS short message service request; accordingly, the receiver 11 is specifically configured to:

In another possible implementation manner, the transmitter 15 is further configured to, after the processor 12 discards the IMS service request message, send the IMS service cancellation response message to the P-GW, so that the P-GW sends a re-authentication response RAA message to the PCRF device according to the IMS service cancellation response message, so that the PCRF device sends an authentication authorization response AAA message to the P-CSCF device according to the RAA message.

In another possible implementation, the processor 12 is specifically configured to:

In another possible embodiment, the transmitter 15 is further configured to send an indication message to stop paging the VOLTE terminal to a mobility management entity MME after the processor 12 discards the IMS service request message.

Fig. 7 is a first schematic structural diagram of a proxy call session control function device according to an embodiment of the present application. Referring to fig. 7, the apparatus may include a receiver 21, a transmitter 22, a memory 23, and a communication bus 24, where the memory 23 is used for storing program instructions, and the communication bus 24 is used for implementing connections between various components, where,

the receiver 21 is configured to receive SIP CANCEL messages which are sent by a telephony application server TAS to a voice over long term evolution VOLTE terminal and carry a cancellation flag;

the sender 22 is configured to send, according to the SIP CANCEL message, an internet protocol multimedia subsystem IMS service cancellation request message to a serving gateway S-GW corresponding to the VOLTE terminal through a signaling plane channel, where the IMS service cancellation request message is used to instruct the S-GW to discard an IMS service request message corresponding to the IMS service cancellation request message.

The proxy call session control function device provided in the embodiment of the present application may execute the technical solution shown in the foregoing method embodiment, and its implementation principle and beneficial effect are similar, which are not described herein again.

In a possible implementation manner, the receiver 21 is further configured to receive, after the transmitter 22 sends an IMS service cancellation request message to an S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the SIP CANCEL message, an IMS service cancellation response message sent by the S-GW and corresponding to the IMS service cancellation request message;

the transmitter 22 is further configured to send the IMS service cancellation response message to a telephony application server TAS corresponding to the P-CSCF device, where the IMS service cancellation response message is used to instruct the TAS to send a service request message to the VOLTE terminal through a circuit switched CS domain.

Fig. 8 is a schematic structural diagram of a proxy call session control function device according to an embodiment of the present application. In addition to the implementation shown in fig. 7, referring to fig. 8, the apparatus further comprises a processor 25, wherein,

the processor 25 is configured to generate, according to the SIP CANCEL message, the authentication and authorization request AAR message carrying the cancellation identifier or the session termination request STR message carrying the cancellation identifier when the IMS service request is an IMS call service request;

the transmitter 22 is specifically configured to send the AAR message or the STR message to the PCRF device, so that the PCRF device sends an IMS service cancellation request message to an S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the AAR message or the STR message.

In another possible embodiment, the transmitter 22 is specifically configured to:

sending a RAR message carrying the cancellation identifier to a P-GW according to the AAR message or the STR message, so that the P-GW sends the IMS service cancellation request message to the S-GW through a signaling plane channel according to the RAR message.

In another possible implementation manner, the processor 25 is further configured to generate, according to the SIP CANCEL message, the authentication and authorization request AAR message carrying the cancellation identifier when the IMS service request is an IMS short message service request;

the transmitter 22 is specifically configured to send the AAR message to the PCRF device, so that the PCRF device sends an IMS service cancellation request message to an S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the AAR message.

and sending an RAR message carrying the cancellation identifier to a P-GW according to the AAR message, so that the P-GW sends the IMS service cancellation request message to the S-GW through a signaling plane channel according to the RAR message.

In another possible implementation, the IMS service request is an IMS call service request; accordingly, the receiver 21 is specifically configured to:

In another possible implementation manner, the IMS service request is an IMS short message service request; accordingly, the receiver 21 is specifically configured to:

Fig. 9 is a first schematic structural diagram of a service processing apparatus according to an embodiment of the present application. Referring to fig. 9, the apparatus may include a receiving module 31, a determining module 32, and a discarding module 33, wherein,

the receiving module 31 is configured to receive, from a signaling plane channel, an IMS service cancellation request message corresponding to the VOLTE terminal and sent by a packet data gateway P-GW;

the determining module 32 is configured to determine, in the cache, an IMS service request message corresponding to the IMS service cancellation request message;

the discarding module 33 is configured to discard the IMS service request message.

The service processing apparatus provided in the embodiment of the present application may execute the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects thereof are similar, and are not described herein again.

In one possible implementation, the IMS service request is an IMS call service request; correspondingly, the receiving module 31 is specifically configured to:

Fig. 10 is a schematic structural diagram of a service processing apparatus according to an embodiment of the present application. On the basis of the embodiment shown in fig. 9, please refer to fig. 10, the apparatus further comprises a sending module 34, wherein,

the sending module 34 is configured to send the IMS service cancellation response message to the P-GW after the discarding module 33 discards the IMS service request message, so that the P-GW sends a re-authentication response RAA message to the PCRF device according to the IMS service cancellation response message, so that the PCRF device sends an authentication authorization response AAA message or a session termination response STA message to the P-CSCF device according to the RAA message.

In another possible implementation manner, the IMS service request is an IMS short message service request; correspondingly, the receiving module 31 is specifically configured to:

In another possible implementation manner, the sending module 34 is further configured to send the IMS service cancellation response message to the P-GW after the discarding module 33 discards the IMS service request message, so that the P-GW sends a re-authentication response RAA message to the PCRF device according to the IMS service cancellation response message, so that the PCRF device sends an authentication authorization response AAA message to the P-CSCF device according to the RAA message.

In another possible implementation, the determining module 32 is specifically configured to:

In another possible embodiment, the sending module 34 is further configured to send an indication message to stop paging the VOLTE terminal to a mobility management entity MME after the discarding module 33 discards the IMS service request message.

Fig. 11 is a first schematic structural diagram of another service processing apparatus according to an embodiment of the present application. Referring to fig. 11, the apparatus may include a receiving module 41 and a transmitting module 42, wherein,

the receiving module 41 is configured to receive SIP CANCEL messages which are sent by a telephony application server TAS to a voice over long term evolution VOLTE terminal and carry a cancellation identifier;

the sending module 42 is configured to send, according to the SIP CANCEL message, an internet protocol multimedia subsystem IMS service cancellation request message to a serving gateway S-GW corresponding to the VOLTE terminal through a signaling plane channel, where the IMS service cancellation request message is used to instruct the S-GW to discard an IMS service request message corresponding to the IMS service cancellation request message.

In a possible implementation manner, the receiving module 41 is configured to receive, after the sending module 42 sends an IMS service cancellation request message to an S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the SIP CANCEL message, an IMS service cancellation response message sent by the S-GW and corresponding to the IMS service cancellation request message;

the sending module 42 is specifically configured to send the IMS service cancellation response message to a telephony application server TAS corresponding to the P-CSCF device, where the IMS service cancellation response message is used to instruct the TAS to send a service request message to the VOLTE terminal through a circuit switched CS domain.

Fig. 12 is a schematic structural diagram of another service processing apparatus according to an embodiment of the present application. On the basis of the embodiment shown in fig. 11, please refer to fig. 12, the apparatus further comprises a generating module 43, wherein,

the generating module 43 is configured to generate, according to the SIP CANCEL message, the authentication and authorization request AAR message carrying the cancellation identifier or the session termination request STR message carrying the cancellation identifier when the IMS service request is an IMS call service request;

the sending module 42 is specifically configured to send the AAR message or the STR message to the PCRF device, so that the PCRF device sends an IMS service cancellation request message to an S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the AAR message or the STR message.

In another possible implementation manner, the generating module 43 is further configured to generate, according to the SIP CANCEL message, the authentication and authorization request AAR message carrying the cancellation identifier when the IMS service request is an IMS short message service request;

the sending module 42 is further configured to send the AAR message to the PCRF device, so that the PCRF device sends an IMS service cancellation request message to an S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the AAR message.

Optionally, the sending module 42 is specifically configured to send, according to the AAR message, a RAR message carrying the cancellation identifier to a P-GW, so that the P-GW sends the IMS service cancellation request message to the S-GW through a signaling plane channel according to the RAR message.

In another possible implementation manner, when the IMS service request is an IMS call service request, the receiving module 41 is specifically configured to:

In another possible implementation manner, when the IMS service request is an IMS short message service request, the receiving module 41 is specifically configured to:

An embodiment of the present application provides a service processing system, including a serving gateway according to the embodiment in fig. 5 or fig. 6, and a proxy call session control function device according to the embodiment in fig. 7 or fig. 8.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the embodiments of the present application.

Claims

1. A method for processing a service, comprising:

after a service gateway (S-GW) caches an Internet protocol multimedia subsystem (IMS) service request message corresponding to a Voice Over Long Term Evolution (VOLTE) terminal, if a Telephone Application Server (TAS) does not receive an IMS service response message sent by the VOLTE terminal within a preset time, the S-GW receives an IMS service cancellation request message corresponding to the VOLTE terminal from a signaling plane channel, wherein the IMS service cancellation request message is sent by a packet data gateway (P-GW);

and the S-GW determines an IMS service request message corresponding to the IMS service cancellation request message in the cache and discards the IMS service request message.

2. The method of claim 1, wherein the IMS service request is an IMS call service request; correspondingly, the receiving, by the S-GW, an IMS service cancellation request message corresponding to the VOLTE terminal from the signaling plane channel by the P-GW includes:

after a proxy call session control function P-CSCF device sends an authentication authorization request AAR message carrying a cancellation identifier or a session termination request STR message carrying the cancellation identifier to a policy and charging rule function PCRF device, and the PCRF device sends a re-authentication request RAR message carrying the cancellation identifier to a data gateway P-GW according to the AAR message or the STR message, the S-GW receives the IMS service cancellation request message sent by the P-GW according to the RAR message.

3. The method of claim 2, wherein the AAR message or the STR message is sent by the P-CSCF device according to an SIP CANCEL message carrying the cancellation flag sent by the TAS.

4. The method according to claim 2 or 3, wherein after discarding the IMS service request message, further comprising:

the S-GW sends an IMS service cancellation response message to the P-GW, so that the P-GW sends a re-authentication response RAA message to the PCRF equipment according to the IMS service cancellation response message, and the PCRF equipment sends an authentication authorization response AAA message or a session termination response STA message to the P-CSCF equipment according to the RAA message.

5. The method of claim 1, wherein the IMS service request is an IMS sms request; correspondingly, the receiving, by the S-GW, an IMS service cancellation request message corresponding to the VOLTE terminal from a signaling plane channel includes:

after a proxy call session control function P-CSCF device sends an authentication authorization request AAR message carrying a cancellation identifier to a policy and charging rule function PCRF device, and the PCRF device sends a re-authentication request RAR message carrying the cancellation identifier to a P-GW according to the AAR, the IMS service cancellation request message sent by the P-GW according to the RAR message is received.

6. The method of claim 5, wherein the AAR message is sent by the P-CSCF device according to an SIP CANCEL message carrying the cancellation identifier sent by a Telephony Application Server (TAS).

7. The method according to claim 5 or 6, wherein after discarding the IMS service request message, further comprising:

the S-GW sends an IMS service cancellation response message to the P-GW, so that the P-GW sends a re-authentication response RAA message to the PCRF equipment according to the IMS service cancellation response message, and the PCRF equipment sends an authentication authorization response AAA message to the P-CSCF equipment according to the RAA message.

8. The method according to any of claims 1-2, 5, and 6, wherein the IMS service cancellation request message is a Downlink data release message, or wherein the IMS service cancellation request message is an update bearer request UBR message carrying the cancellation identifier.

9. The method according to any of claims 1-2, 5, 6, wherein the S-GW determines, in a cache, an IMS service request message corresponding to the IMS service cancellation request message, comprising:

the S-GW determines a cache corresponding to a current connection, wherein the current connection is used for transmitting the IMS service request message, and the cache corresponding to the current connection comprises at least one IMS service request message corresponding to the VOLTE terminal;

and the S-GW determines the message in the cache corresponding to the current connection as the IMS service request message corresponding to the IMS service cancel request message.

10. The method according to any of claims 1-2, 5, 6, wherein after discarding the IMS service request message, further comprising:

and sending an indication message for stopping paging the VOLTE terminal to a mobility management entity MME.

11. A method for processing a service, comprising:

a proxy call session control function (P-CSCF) device receives SIP CANCEL information which is sent by a Telephone Application Server (TAS) to a voice over LTE (voice over LTE) terminal of long-term evolution and carries a cancel identifier;

and the P-CSCF device sends an Internet protocol multimedia subsystem (IMS) service cancellation request message to a serving gateway (S-GW) corresponding to the VOLTE terminal through a signaling plane channel according to the SIP CANCEL message, wherein the IMS service cancellation request message is used for indicating the S-GW to discard the IMS service request message corresponding to the IMS service cancellation request message.

12. The method of claim 11, wherein after the P-CSCF device sends an IMS service cancellation request message to a serving gateway S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the SIP CANCEL message, the method further comprises:

and the P-CSCF equipment sends the IMS service cancellation response message to a Telephone Application Server (TAS) corresponding to the P-CSCF equipment, wherein the IMS service cancellation response message is used for indicating the TAS to send a service request message to the VOLTE terminal through a Circuit Switching (CS) domain.

13. The method according to claim 11 or 12, wherein the IMS service request is an IMS call service request; correspondingly, the sending, by the P-CSCF device, the IMS service cancellation request message to the S-GW corresponding to the VOLTE terminal through the signaling plane channel according to the SIP CANCEL message includes:

the P-CSCF device generates the AAR message carrying the cancellation identifier or the STR message carrying the cancellation identifier according to the SIP CANCEL message;

and the P-CSCF equipment sends the AAR message or the STR message to PCRF equipment to enable the PCRF equipment to send an IMS service cancellation request message to S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the AAR message or the STR message.

14. The method of claim 13, wherein the sending, by the PCRF device, the IMS service cancellation request message to the S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the AAR message or the STR message includes:

15. The method of claim 11 or 12, wherein the IMS service request is an IMS sms service request; correspondingly, the sending, by the P-CSCF device, the IMS service cancellation request message to the S-GW corresponding to the VOLTE terminal through the signaling plane channel according to the SIP CANCEL message includes:

the P-CSCF equipment generates the authentication authorization request AAR message carrying the canceling identifier according to the SIP CANCEL message;

and the P-CSCF equipment sends the AAR message to PCRF equipment which has a policy and charging rule function, so that the PCRF equipment sends an IMS service cancellation request message to S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the AAR message.

16. The method of claim 15, wherein the sending, by the PCRF device, the IMS service cancellation request message to the S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the AAR message includes:

and the PCRF equipment sends a RAR message carrying the cancellation identifier to a P-GW according to the AAR message so that the P-GW sends the IMS service cancellation request message to the S-GW through a signaling plane channel according to the RAR message.

17. The method of claim 12, wherein the IMS service request is an IMS call service request; correspondingly, the step of receiving, by the P-CSCF device, an IMS service cancellation response message corresponding to the IMS service cancellation request message sent by the S-GW includes:

and after the S-GW sends the IMS service cancellation response message to the P-GW and the P-GW sends an RAA message to Policy and Charging Rules Function (PCRF) equipment according to the IMS service cancellation response message, the P-CSCF equipment receives an authentication authorization response (AAA) message or a session termination response (STA) message sent by the PCRF equipment according to the RAA message.

18. The method of claim 12, wherein the IMS service request is an IMS sms request; correspondingly, the step of receiving, by the P-CSCF device, an IMS service cancellation response message corresponding to the IMS service cancellation request message sent by the S-GW includes:

and after the S-GW sends the IMS service cancellation response message to the P-GW and the P-GW sends an RAA message to Policy and Charging Rules Function (PCRF) equipment according to the IMS service cancellation response message, the P-CSCF equipment receives an authentication authorization response (AAA) message sent by the PCRF equipment according to the RAA message.

19. The method according to any of claims 11-12, 14, 16-18, wherein the IMS service cancellation request message is a Downlink data release message, or wherein the IMS service cancellation request message is an update bearer request, UBR, message carrying the cancellation identifier.

20. A service gateway is characterized by comprising a receiver, a processor, a memory and a communication bus, wherein the memory is used for storing program instructions, the communication bus is used for realizing connection among all components, the processor is used for reading the program instructions in the memory and executing the operation corresponding to the program instructions, and the service gateway is characterized in that,

the receiver is used for receiving an IMS service cancellation request message corresponding to a Voice Over Long Term Evolution (VOLTE) terminal from a signaling plane channel if a Telephone Application Server (TAS) does not receive an IMS service response message sent by the VOLTE terminal within a preset time after the processor caches an IMS service request message corresponding to the VOLTE terminal;

21. The serving gateway of claim 20, wherein the IMS service request is an IMS call service request; correspondingly, the receiver is specifically configured to:

22. The serving gateway of claim 21, wherein the AAR message or the STR message is sent by the P-CSCF device according to an SIP CANCEL message carrying the cancellation flag sent by a telephony application server TAS.

23. The serving gateway of claim 21 or 22, further comprising a transmitter, wherein,

the sender is configured to send an IMS service cancellation response message to the P-GW after the processor discards the IMS service request message, so that the P-GW sends a re-authentication response RAA message to the PCRF device according to the IMS service cancellation response message, so that the PCRF device sends an authentication authorization response AAA message or a session termination response STA message to the P-CSCF device according to the RAA message.

24. The serving gateway of claim 23, wherein the IMS service request is an IMS sms request; correspondingly, the receiver is specifically configured to:

25. The serving gateway of claim 23, wherein the AAR message is sent by the P-CSCF device according to an SIP CANCEL message carrying the cancellation id sent by a telephony application server, TAS.

26. The serving gateway according to claim 24 or 25,

the sender is further configured to send the IMS service cancellation response message to the P-GW after the processor discards the IMS service request message, so that the P-GW sends a re-authentication response RAA message to the PCRF device according to the IMS service cancellation response message, so that the PCRF device sends an authentication authorization response AAA message to the P-CSCF device according to the RAA message.

27. The serving gateway of any of claims 20 to 22 and 24 to 25, wherein the IMS service cancellation request message is a Downlink data release message, or wherein the IMS service cancellation request message is an update bearer request, UBR, message carrying the cancellation identifier.

28. The serving gateway of any of claims 20-22 and 24-25, wherein the processor is specifically configured to:

29. The service gateway according to any of claims 24-25,

the transmitter is further configured to send, to a mobility management entity MME, an indication message to stop paging the VOLTE terminal after the processor discards the IMS service request message.

30. A proxy call session control function device, comprising a receiver, a transmitter, a memory for storing program instructions, and a communication bus for enabling connection between components, wherein,

the receiver is used for receiving SIP CANCEL messages which are sent to a Voice Over Long Term Evolution (VOLTE) terminal by a Telephone Application Server (TAS) and carry cancellation identifications;

the sender is configured to send an internet protocol multimedia subsystem IMS service cancellation request message to a serving gateway S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the SIP CANCEL message, where the IMS service cancellation request message is used to instruct the S-GW to discard an IMS service request message corresponding to the IMS service cancellation request message.

31. The apparatus of claim 30,

the receiver is further configured to receive, after the transmitter sends an IMS service cancellation request message to a serving gateway S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the SIP CANCEL message, an IMS service cancellation response message corresponding to the IMS service cancellation request message sent by the S-GW;

the sender is further configured to send the IMS service cancellation response message to a telephony application server TAS corresponding to a proxy call session control function P-CSCF device, where the IMS service cancellation response message is used to instruct the TAS to send a service request message to the VOLTE terminal through a circuit switched CS domain.

32. The apparatus of claim 30 or 31, further comprising a processor, wherein,

the processor is configured to generate, according to the SIP CANCEL message, the authentication and authorization request AAR message carrying the cancellation identifier or the session termination request STR message carrying the cancellation identifier when the IMS service request is an IMS call service request;

the transmitter is specifically configured to send the AAR message or the STR message to a PCRF device, so that the PCRF device sends an IMS service cancellation request message to an S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the AAR message or the STR message.

33. The apparatus of claim 32, wherein the transmitter is specifically configured to:

34. The apparatus of claim 32,

the processor is further configured to generate the authentication authorization request AAR message carrying the cancellation identifier according to the SIP CANCEL message when the IMS service request is an IMS short message service request;

the transmitter is specifically configured to send the AAR message to the PCRF device, so that the PCRF device sends an IMS service cancellation request message to an S-GW corresponding to the VOLTE terminal through a signaling plane channel according to the AAR message.

35. The apparatus of claim 34, wherein the transmitter is specifically configured to:

36. The apparatus of claim 31, wherein the IMS service request is an IMS call service request; correspondingly, the receiver is specifically configured to:

and after the S-GW sends the IMS service cancellation response message to the P-GW and the P-GW sends an RAA message to Policy and Charging Rules Function (PCRF) equipment according to the IMS service cancellation response message, receiving an authentication authorization response (AAA) message or a session termination response (STA) message sent by the PCRF equipment according to the RAA message.

37. The apparatus of claim 31, wherein the IMS service request is an IMS sms request; correspondingly, the receiver is specifically configured to:

and after the S-GW sends the IMS service cancellation response message to the P-GW and the P-GW sends an RAA message to Policy and Charging Rules Function (PCRF) equipment according to the IMS service cancellation response message, receiving an authentication authorization response (AAA) message sent by the PCRF equipment according to the RAA message.

38. The apparatus of any of claims 30-31 and 33-37, wherein the IMS service cancellation request message is a Downlink data release message, or wherein the IMS service cancellation request message is an update bearer request, UBR, message carrying the cancellation identifier.

39. A traffic processing system comprising a serving gateway as claimed in any of claims 20 to 29 and a proxy call session control function device as claimed in any of claims 30 to 38.