WO2011079709A1

WO2011079709A1 - Method and device for session processing

Info

Publication number: WO2011079709A1
Application number: PCT/CN2010/079738
Authority: WO
Inventors: 罗恩良; 尹英雄
Original assignee: 华为技术有限公司
Priority date: 2009-12-31
Filing date: 2010-12-14
Publication date: 2011-07-07
Also published as: CN102118369A

Abstract

The invention discloses a method and device for session processing. The method includes: a request message sent by a terminal in a first network is received, which requests to establish a session between the terminal in the first network and a terminal in a second network, and a session ID is assigned to the session; the session ID is sent to the first network, and through the first network the session ID is transmitted to the terminal in the second network; a request message sent by the terminal in the second network is received, which carries the session ID, and according to the session ID, the session between the terminal in the first network and the terminal in the second network is established. By transmitting the session ID to the terminal in the second network, the present invention enables the terminal in the second network to directly report the request message containing the session ID. Therefore, the session processing device no longer needs to associate request messages triggered by different networks, thus avoiding a large number of signal interactions, and decreasing network loads.

Description

The present invention claims the priority of the Chinese Patent Application entitled "Session Processing Method and Apparatus" filed on December 31, 2009, the Chinese Patent Office, Application No. 200910260762. 4, the entire contents of which are incorporated by reference. Combined in this application. The present invention relates to the field of communications technologies, and in particular, to a session processing method and apparatus.

Background technique

IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) is a multi-service application architecture as a next-generation telecom network architecture. In order to effectively control and handle the multi-service interaction problem in the IMS, the 3GPP (Third Generation Partnership Project) introduces a functional entity of the SCIM (Service Capability Interaction Manager) in the IMS system. Functional entities are also referred to as Service Brokers.

By adding new interaction logic, Service Broker does not need to modify existing services to realize the unified combination of services of different networks to form a new service package, enriching the user experience.

For example, the calling party and the called party are in different networks. For example, the calling party is a CS (Circuit Switching) domain terminal, and the called party is an IMS domain terminal. The calling party wants to establish a session with the called party. The Broker receives the request message triggered by the CS domain core network and the request message triggered by the IMS domain core network (IMS Core), and the Service Broker associates the two request messages to establish a session between the calling party and the called party. . However, since the request messages triggered by different networks need to be associated through Service Broker, there will be more signaling interactions, which increases the network load. SUMMARY OF THE INVENTION Embodiments of the present invention provide a session processing method and apparatus, which reduce signaling interactions for establishing sessions between different network terminals.

An embodiment of the present invention provides a session processing method, which is configured to receive a request message sent by a terminal from a first network, where the request message is a session between a terminal requesting to establish a first network and a terminal of a second network, where the session is Assign a session ID;

Sending the session ID to the first network, and transmitting the session ID to the terminal of the second network by using the first network;

Receiving a request message sent by a terminal from the second network, where the request message carries the session ID, and establishing a session between the terminal of the first network and the terminal of the second network according to the session ID .

Correspondingly, the embodiment of the present invention further provides a session processing apparatus, including:

a session ID allocation unit, configured to receive a request message sent by a terminal from the first network, where the request message is a session between the terminal that requests the establishment of the first network and the terminal of the second network, and allocates a session ID for the session;

a sending unit, configured to send the session ID to the first network, and deliver the session ID to a terminal of the second network by using the first network;

a session establishing unit, configured to receive a request message sent by a terminal from the second network, where the request message carries the session ID, and establish, according to the session ID, a terminal of the first network and the second network The session between the terminals.

It can be seen from the technical solution provided by the foregoing embodiment of the present invention that, by transmitting the session ID requested by the first network terminal to the terminal of the second network, the terminal of the second network sends a request message including the session ID, thereby The session processing device no longer needs to associate request messages triggered by different networks, avoiding more signaling interactions and reducing network load. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some implementations of the present invention. For example, other drawings may be obtained from those skilled in the art without any inventive labor.

1 is a schematic flowchart of a session processing method according to an embodiment of the present invention;

2 is a schematic structural diagram of a session processing apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic flowchart diagram of a session processing method according to an embodiment of the present invention.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Based on the prior art, since the request messages triggered by different networks need to be associated through the session processing device, there are more signaling interactions, which increases the defect of the network load. An embodiment of the present invention provides a session processing method and apparatus, by transmitting a session ID requested by a first network terminal to a terminal of a second network, so that a terminal of the second network sends a request message including the session ID, thereby implementing a session. The processing device no longer needs to associate request messages triggered by different networks, avoids more signaling interactions, and reduces network load. The session processing device may be specifically a Service Broker.

As shown in FIG. 1, an embodiment of the present invention provides a session processing method, including:

The request message sent by the terminal from the first network is received, and the request message is a session between the terminal requesting the establishment of the first network and the terminal of the second network, and the session ID is assigned to the session.

12. Send the session ID to the first network, and deliver the session ID to the terminal of the second network by using the first network. Receiving a request message sent by a terminal from the second network, where the request message carries the session ID, and establishing, between the terminal of the first network and the terminal of the second network, according to the session ID Conversation.

The execution subject of the method for session processing in the embodiment of the present invention may be a Service Broker. By transmitting the session ID requested by the first network terminal to the terminal of the second network, the terminal of the second network directly sends the request message including the session ID, so that the service broker no longer needs to associate the request message triggered by different networks, thereby avoiding More signaling interactions reduce network load.

Optionally, the first network may be a PSTN (Public Switched Telephone Network) or a GSM (Global System for Mobile Communications) network, and the second network may be an IMS network.

Alternatively, the first network may be an IMS network and the second network may be a PSTN or a GSM network. In step 1 1 , the service broker receives a request message sent by the terminal of the first network, where the request message is a session between the terminal requesting the establishment of the first network and the second network terminal, and the service broker allocates a session ID for the session. The session ID can be generated according to some predetermined rule and is not restricted. Globally, each session has a unique session ID to distinguish between different sessions, and the same session corresponds to the same session ID.

Based on step 12, the Service Broker sends the session ID to the first network, and the session ID is transmitted to the terminal of the second network by using the first network, optionally: the process may include The session ID is sent to the first network by using an ID delivery message, and the first network sends the session ID to the terminal of the second network by using the ID delivery message, and the session is extended in the ID delivery message. An ID parameter item to carry the session ID.

In step 13, the service broker receives the request message sent by the terminal from the second network, where the request message carries the session ID, and the service broker obtains the corresponding session according to the session ID; and confirms that the session ID is the first network. The session initiated by the terminal, the Service Broker establishes a session between the terminal of the first network and the terminal of the second network, so as to establish a session between terminals of different networks. Optionally, the request message sent by the second network terminal is extended with a session ID parameter item, To carry the session ID.

The first network is a PSTN or a GSM network, and the ID delivery message may be a CONNECT message of an INAP (Intelligent Network Application Protocol) or a CAP (CAMEL Application Part, which is an application part of CAMEL) protocol. The second network is an IMS network, and the request message sent by the terminal of the second network may be an INVITE message of a SIP (Session Initiation Protocol).

Or the first network is an IMS network, the first message is an INVITE message of the SIP protocol, the second network is a PSTN network or a GSM network, and the request message sent by the terminal of the second network may be an IDP of the INAP protocol or the CAP protocol (Initial Detective) Point, initial detection point) message.

It can be seen that, in the session processing method of the embodiment of the present invention, the session ID parameter item is extended in the message of the first network and the second network to carry the session ID, and the capability of the standard INAP, CAP, and SIP protocols is extended, and no additional network is added. operating.

It can be seen from the technical solution provided by the foregoing embodiment of the present invention that, by transmitting the session ID requested by the first network terminal to the terminal of the second network, the terminal of the second network sends a request message including the session ID, thereby The session processing device no longer needs to associate request messages triggered by different networks, avoiding more signaling interactions and reducing network load.

An example provides a session processing apparatus, including:

The session ID assigning unit 21 is configured to receive a request message sent by the terminal from the first network, where the request message is a session between the terminal that requests the establishment of the first network and the terminal of the second network, and allocates a session ID for the session;

The sending unit 22 is configured to send the session ID to the first network, and transmit the session ID to the terminal of the second network by using the first network;

a session establishing unit 23, configured to receive a request message sent by a terminal from the second network, where the request message carries the session ID, and establish a terminal of the first network according to the session ID A session with a terminal of the second network.

The session processing apparatus of the embodiment of the present invention may be integrated with the Service Broker.

a specific example, the sending unit 22 is further configured to send a session ID to the first network by using an ID delivery message, where the first network sends the session ID to the second network by using the ID delivery message. Terminal.

a specific example, the session establishing unit is further configured to: according to the session ID, confirm that the session ID is a session initiated by a terminal of the first network, and establish a terminal of the first network and a terminal of the second network. Session between.

It can be seen that the session processing apparatus of the embodiment of the present invention implements the extension of the standard INAP, CAP, and SIP protocol capabilities without adding additional network operations.

Optionally, the first network is a public switched telephone network PSTN or a global mobile communication system GSM network, and the ID delivery message is a CONNECT message of an intelligent network application protocol INAP or CAP protocol, and the second network is an IP multimedia sub-network. a system IMS network, where the request message sent by the terminal of the second network is an IN VITE message of the session initiation protocol SIP;

Or the first network is an IP multimedia subsystem IMS network, the ID delivery message is an INVITE message of a session initiation protocol SIP, and the second network is a public switched telephone network PSTN or a global mobile communication system GSM network, The request message sent by the terminal of the second network is an initial detection point IDP message of the intelligent network application protocol INAP or CAP protocol. It should be noted that, in the implementation manner of the foregoing session processing apparatus, the division of each functional module is merely an example. In actual applications, the foregoing function allocation may be performed according to requirements, such as configuration requirements of corresponding hardware or convenience of implementation of software. The internal structure of the session processing device is divided into different functional modules to complete all or part of the functions described above. In the actual application, the corresponding functional modules in this embodiment may be implemented by corresponding hardware, or may be executed by corresponding hardware. For example, the sending unit 22 may be hardware having the foregoing functions, such as , a transmitter having the transmission capability, and His general-purpose transmitting device capable of performing the aforementioned functions may also be a general-purpose processor capable of executing a corresponding computer program to perform the aforementioned functions, or other hardware devices.

It can be seen from the technical solution provided by the foregoing embodiment of the present invention that, by transmitting the session ID requested by the first network terminal to the terminal of the second network, the terminal of the second network sends a request message including the session ID, thereby The session processing device no longer needs to associate request messages triggered by different networks, avoiding more signaling interactions and reducing network load. As shown in FIG. 3, a schematic diagram of a scenario for applying a session processing method according to an embodiment of the present invention, where the first network is a GSM network, the applied protocol is a CAP protocol, and the calling terminal A is a GSM network terminal. The second network is an IMS network, the applied protocol is SIP, and the called terminal B is an IMS network terminal. The user of the calling terminal A subscribes to the VPN service, PPS service and PoC service. The user of the called terminal B subscribes to the VPN service.

The signaling process of the calling terminal A calling the called terminal B is as follows:

31. The MSC sends an IDP message to the Service Broker.

The GSM network core network receives the request sent by the terminal A to the requesting terminal B for the PoC service call. After receiving the request, the GSM network core network triggers a request message to the Service Broker, such as the MSC (Mobile Switching Center). The IDP message is sent to the Service Broker, where the ID of the IDP (b, A) message is the long number of the calling terminal A, and b is the short number of the called terminal B.

32. Service Broker generates a session ID.

The Service Broker receives the IDP (b, A) message sent by the MSC. According to the long number of the calling terminal A in the IDP (b, A) message, the short number of the called terminal B, the Service Broker can know the calling terminal A and the nickname. A session is required between the terminals B, and the service broker generates a session ID that uniquely identifies the session, and identifies that the session to be established is a session between the calling terminal A and the called terminal B to distinguish the session between the other terminals.

33. The Service Broker invokes the VPN service to obtain the long number of the called terminal B. The user of the calling terminal A subscribes to the VPN service, the Service Broker sends the IDP (b, A) message to the VPN server, and the VPN server sends the RRBE (Request Report BCSM Event, Request Report BCSM (Basic Call State Model) event. The message and the CON ( Β, Α ) message to the Service Broker, the Service Broker obtains the long number of the called terminal B. Service Broker invokes the functions of the above messages in the VPN service, and will not be described here.

In Figure 3, the CONNECT message is simply represented as CON.

34. The Service Broker invokes the PPS service to perform charging for the calling terminal A.

The user of the calling terminal A subscribes to the PPS service, and the Service Broker sends an IDP (B, A) message to the PPS server. The PPS server determines the calling rate, converts the balance into the duration of the call, and sends the SCI (Subscription CAMEL Information, CAMEL subscription information). ), RRBE messages, and CON messages to Service Broker. The role of the above messages in the PPS service is invoked by Service Broker and will not be described here.

35. The Service Broker fills in the session ID to the CONNECT message.

The CONNECT message extension adds a session ID parameter item to carry the session ID. The Service Broker fills in the CONNECT message with the session ID generated by the session between the calling terminal A and the called terminal B, and identifies that the session to be established is the session between the calling terminal A and the called terminal B.

Since the called terminal B is an IMS domain terminal, the Service Broker needs to take an available number according to the number range of the IMS domain, such as R-IMS, and change the long number of the called terminal B to the number of the IMS domain, so that the MSC triggers. The request message can be connected to the IMS Core.

It can be seen that the CAP protocol capability is extended by extending the session ID parameter item of the CONNECT message without adding additional signaling.

36. The Service Broker sends a CONNECT message carrying the session ID to the MSC.

The Service Broker sends a CON (R-IMS, A, Session ID) message to the MSC. The CON message carries the session ID and the available number R-IMS of the called terminal B in the IMS domain.

37. The MSC routes the CON (R-IMS, A, Session ID) message to the IMS Core.

The MSC routes CONK R-IMS, A, session ID according to the number of the called terminal B in the IMS domain R-IMS. Message to IMS Core.

38. The IMS Core sends an INVITE message carrying the session ID to the Service Broker.

The IMS Core receives a CON (R-IMS, A, Session ID) message, and learns that the session corresponding to the session ID is a session between the calling terminal A and the called terminal B, and sends an IN VITE message carrying the session ID to the Service. Broker.

Here, the protocol of the IMS network is different from the protocol of the GSM network, and the CONNECT message of the GSM network needs to be converted into the INVITE message of the IMS network.

The INVITE message can also be extended to increase the session ID parameter item, carrying the session ID. It can be seen that the SIP ID capability is extended by expanding the session ID parameter item without adding additional signaling.

39. Service Broker obtains the session ID.

The Service Broker receives the INVITE message carrying the session ID and obtains the session ID. Based on the session I D carried in the I N VITE message, the service broker learns that the session corresponding to the session I D is the session between the calling terminal A and the called terminal B, and obtains the long number of the called terminal B.

It can be seen that the Service Broker can obtain the corresponding session through the session ID, so that the Service Broker no longer needs to associate the request messages triggered by different networks, avoiding more signaling interactions and reducing the network load.

310. The Service Broker invokes the PoC service.

The Service Broker sends an INVITE message to the PoC server according to the long number of the called terminal B, requesting the intercom service. The PoC server sends an INVITE message to the Service Broker, and the Service Broker routes the INVITE message to the IMS Core.

31 1. The called terminal B answers, the IMS Core sends a 200 OK to the Service Broker, and the Service Broker forwards the 200 OK to the PoC server.

312. The PoC server sends 200 OK to the Service Broker, and the Service Broker forwards the 200 OK to the IMS Core.

313. The Service Broker generates an Answer event, and sends an ERB (ANS) message to the PPS server, and the ERB is an Event Report BCSM, a BCSM event report, which corresponds to the foregoing step 34. The RRBE message informs the PPS system that billing begins. The PPS system sends an AC (Apply Charging) message, an RRBE message, and a CONTINUE message to the Service Broker, and the PPS system starts charging.

In Figure 3, the CONTINUE message is simply represented as CONT.

314. The IMS Core sends an ii!ACK (Acknowledge) message to the Service Broker, and the Service Broker forwards the ACK message to the PoC server. And Service Broker forwards the ACK message from the PoC server to the IMS Core.

Steps 310-314 are specific processes for the Service Broker to invoke the PoC service, and are not described here. The embodiment of the present invention provides a session processing method, which is also applicable to the first network being an IMS network, the application protocol is a SIP protocol, the calling terminal A is an IMS network terminal, the second network is a GSM network, and the applied protocol is a CAP protocol. The case where the terminal B is called a GSM network terminal. The signaling procedure of the calling terminal A calling the called terminal B can be understood by referring to the above specific implementation manner.

It is worth noting that, in step 35, the Service Broker fills in the session ID in the INVITE message; in step 36, the Service Broker carries the session ID through the INVITE message; in step 39, the Service Broker receives the IDP message carrying the session ID. Service Broker can obtain the corresponding session through the session ID, so Service Broker no longer needs to associate request messages triggered by different networks, avoiding more signaling interactions and reducing network load.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because in accordance with the present invention, certain steps may be performed in other sequences or concurrently. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not detailed in an embodiment can be referred to the related descriptions of other embodiments. A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium, the program In execution, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope disclosed by the present invention. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

Rights request

A session processing method, comprising:

Receiving a request message sent by the terminal from the first network, the request message is a session between the terminal requesting the establishment of the first network and the terminal of the second network, and assigning the session I D to the session;

Receiving a request message sent by the terminal from the second network, where the request message carries the session ID, and establishing a session between the terminal of the first network and the terminal of the second network according to the session ID .

2. The processing method according to claim 1, wherein the session ID is sent to the first network, and the session ID is transmitted to a terminal of the second network by using the first network, Includes:

Sending the session ID to the first network by using an ID delivery message, where the first network sends the session ID to the terminal of the second network by using the ID delivery message.

The processing method according to claim 2, wherein the session ID is carried in a session ID parameter item of the ID delivery message and the request message sent by the terminal of the second network.

The session processing method according to claim 2 or 3, wherein the first network is a public switched telephone network PSTN or a global mobile communication system GSM network, and the ID delivery message is an intelligent network application protocol INAP or The CONNECT message of the CAP protocol, the second network is an IP multimedia subsystem IMS network, and the request message sent by the terminal of the second network is an INVITE message of the session initiation protocol SIP;

Or the first network is an IP multimedia subsystem IMS network, the ID delivery message is an INVITE message of a session initiation protocol SIP, and the second network is a public switched telephone network PSTN or a global mobile communication system GSM network, The request message sent by the terminal of the second network is an intelligent network application. The initial detection point IDP message of the protocol INAP or CAP protocol.

The session processing method according to claim 1, wherein the establishing a session between the terminal of the first network and the terminal of the second network according to the session ID comprises: Determining a session ID, confirming that the session ID is a session initiated by a terminal of the first network, and establishing a session between the terminal of the first network and the terminal of the second network.

A session processing device, comprising:

The session processing device according to claim 6, wherein the sending unit is further configured to send the session ID to the first network by using an ID delivery message, where the first network passes the ID The message transmits the session ID to the terminal of the second network.

The session processing device according to claim 6 or 7, wherein the first network is a public switched telephone network PSTN or a global mobile communication system GSM network, and the ID delivery message is an intelligent network application protocol INAP or The CONNECT message of the CAP protocol, the second network is an IP multimedia subsystem IMS network, and the request message sent by the terminal of the second network is an INVITE message of the session initiation protocol SIP;

Or the first network is an IP multimedia subsystem IMS network, the ID delivery message is an INVITE message of a session initiation protocol SIP, and the second network is a public switched telephone network PSTN or global The mobile communication system GSM network, the request message sent by the terminal of the second network is an initial detection point IDP message of the intelligent network application protocol INAP or CAP protocol.

The session processing apparatus according to claim 6, wherein the session establishing unit is further configured to: according to the session ID, confirm that the session ID is a session initiated by a terminal of the first network, and establish the first A session between a terminal of the network and a terminal of the second network.