JP2009111732A - Application server cooperation system, application server cooperation method, and application server cooperation program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To uniquely specify a plurality of sessions among a plurality of devices related to one call, and to prevent the repetition of processing and the generation of a signal loop. <P>SOLUTION: A terminal 10-1 generates a session group ID and a session ID and sets them in the corresponding signal when starting a call. A session controller 11 specifies a service to be cooperated which is to be started in succession from the analysis result of the signal on the basis of the session group ID when receiving the signal, and transmits the signal setting the received session group ID and the new session ID. A service cooperation device 12 specifies the service to be cooperated which is to be started in succession from the analysis result of the signal when receiving the signal, and transmits the signal setting the received session group ID and the new session ID. Application servers 13-1 and 13-2 start and carry out the service when receiving the signal while terminating the session and establishing the new session. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an application server cooperation system, an application server cooperation method, and an application server cooperation program.

  FIG. 15 is a block diagram showing a configuration of an application server cooperation system according to the prior art. Conventionally, based on the specifications of IMS (IP Multimedia Subsystem) defined by 3GPP (3rd Generation Partnership Project), the terminals 1-1 and 1-2, the application server 3 that provides application services, and the terminal 1-1, An application server cooperation system having a session control device 2 that performs session control between 1-2 and the application server 3 is known (see, for example, Non-Patent Document 1).

In the illustrated prior art, a session between the session control device 2 and the application server 3 is used as a method for specifying the relationship between different sessions belonging to the same call between the session control device 2 and the application server 3. A method of sharing session identification information by placing session identification information for identifying the information in a signal packet is adopted.
3GPP TS 24.229 version 7.7.0 (2007-03), 5.4.3.4, 104 pages, 2007

  However, in this prior art (Non-Patent Document 1), when the session control device 2 sends a signal to the opposite device other than the application server 3, it deletes the session identification information from the signal and sends the signal. For this reason, it can be used only between the session control device (that is, S-CSCF device) 2 and the application server (that is, SIP-AS device) 3 conforming to the prior art, and is related to one call. The relevant session could not be determined on all devices. In addition, in the case of using a service cooperation device that cooperates with services provided by a plurality of application servers 3 or a session control device 2 that does not comply with the standard, the application server 3, the terminals 1-1 and 1-2, A session could not be determined.

  As described above, in the conventional technology, only the session identification information is exchanged between the session control device 2 and the application server 3, and between the other devices and the terminals 1-1 and 1-2. Since session identification information cannot be shared, calls established by a plurality of sessions cannot be managed centrally. Therefore, in the terminals 1-1 and 1-2, the session control device 2, the application server 3, and the service cooperation device, the received signal session is unknown. Therefore, in the apparatus that analyzes the received signal and determines the transfer destination of the signal, that is, the service cooperation apparatus and the session control apparatus 2, the analysis is performed again on the signal related to the call that has already been analyzed, and the transfer is already performed. This causes a problem that the signal is transferred to the transfer destination.

  In the conventional specification (B2BUA mode), the application server that receives the signal from the session control device returns a new request to the session control device with a different SIP dialog. Between them, since session identification information can be held (specification of Non-Patent Document 1), there was no problem.

  FIG. 16 is a block diagram illustrating a configuration of an application server cooperation system in which a service cooperation apparatus that cooperates a plurality of application servers is arranged between an application server and a session control apparatus according to the related art. The parts corresponding to those in FIG. In the figure, first, the terminal 1-1 starts a call (step S1). In this case, since a plurality of application servers 3 are linked by the service linkage apparatus 4, a signal from the session control apparatus 2 reaches the service linkage apparatus 4 (step S2). When the service cooperation apparatus 4 transmits a signal to the application server 3, it waits for a reply (step S3). The application server 3 that has received the signal returns the signal to the service cooperation apparatus 4 using a different dialog (new dialog) (step S4).

  At this time, since the service cooperation apparatus 4 cannot share the session identification information, it cannot associate the dialog of the signal received from the application server 3 with the dialog of the signal transmitted by itself in step 3. Therefore, when the service cooperation apparatus 4 receives a new request with this different dialog, it determines that the call is a new call and transmits a signal to the application server 3. As a result, the above-described repetition occurs and a signal loop occurs (step S5).

  The present invention has been made in consideration of such circumstances, and its purpose is to provide a plurality of sessions between a plurality of devices related to this call when a plurality of application servers cooperate to provide a service. An object of the present invention is to provide an application server cooperation system, an application server cooperation method, and an application server cooperation program that can be uniquely specified and can prevent repetition of processing and occurrence of a signal loop.

  In order to solve the above-described problem, the present invention provides a plurality of application servers that provide respective services, a terminal that enjoys services provided by the application server, and a session that performs session control of the terminals and the application server. An application server cooperation system that is arranged between a control device and a plurality of application servers and a session control device, and includes a service cooperation device that links the plurality of application servers, in the application server or the terminal Session group ID generation means for generating a session group ID for identifying a plurality of sessions related to the call at the time of call activation, and analysis means for analyzing a signal received in the session related to the call Based on the analysis result by the analyzing means, the specifying means for specifying the application server, the terminal, the session control apparatus, or the service cooperation apparatus as a partner for establishing a new session is specified by the specifying means. Session start means for starting a new session for the established partner, and a signal transmitted in the session each time a new session associated with the call is started is generated by the session group ID generation means A setting unit configured to set the session group ID.

  The present invention provides a session ID generating means for generating a session ID for identifying the session each time a new session is started, a session group ID, and a call using the session group ID. Storage means for associating and storing session IDs of sessions established in association with each other, and the specifying means includes information on a session establishment destination obtained by analyzing the signal by the analyzing means; Based on the session group ID and session ID set in the signal, and the session ID stored in the storage means in association with the session group ID, the application server to be a new session establishment partner, Identify the terminal, the session control device, or the service cooperation device, and Each time a new session associated with the call is started, the session group ID generated by the session group ID generation unit and the session ID generation unit generated in the signal transmitted in the session A session ID of the session is set.

  According to the present invention, in the above invention, the session group ID generation unit is provided in the terminal, and the terminal uses a signal in which the session group ID generated by the session group ID generation unit is set as a session establishment destination. It comprises an activation means for transmitting and requesting establishment of a call.

  According to the present invention, in the above invention, the session group ID generation means is provided in the application server, and the application server sends a signal in which the session group ID generated by the session group ID generation means is set to establish a session. It is characterized by comprising activation means for transmitting the request first and requesting establishment of a call.

  In order to solve the above-described problem, the present invention provides a plurality of application servers that provide respective services, a terminal that enjoys the services provided by the application server, and session control of the terminals and the application server. An application server cooperation method in an application server cooperation system that includes a session control apparatus to perform, and a service cooperation apparatus that is arranged between the plurality of application servers and the session control apparatus, and cooperates with the plurality of application servers, A session group ID generating step for generating a session group ID for identifying a plurality of sessions related to the call when a call is started in the application server or the terminal; An analysis step of analyzing a signal received in the session, and specifying the application server, the terminal, the session control device, or the service cooperation device as a new session establishment partner based on the analysis result in the analysis step And a session start step for starting a new session for the establishment partner specified in the specific step, and a signal transmitted in the session each time a new session associated with the call is started And a setting step for setting the session group ID generated in the session group ID generation step.

  According to the present invention, in the above invention, an activation step of requesting establishment of a call by transmitting a signal in which the session group ID generated by the session group ID generation step is set to a session establishment destination; and the session group ID generation The step is performed at the terminal.

  According to the present invention, in the above invention, an activation step of requesting establishment of a call by transmitting a signal in which the session group ID generated by the session group ID generation step is set to a session establishment destination; and the session group ID generation The step is performed by the application server.

  In order to solve the above-described problem, the present invention provides a plurality of application servers that provide respective services, a terminal that enjoys the services provided by the application server, and session control of the terminals and the application server. The application server in a computer used in an application server cooperation system that includes a session control device to perform, and a service cooperation device that is arranged between the plurality of application servers and the session control device and cooperates with the plurality of application servers. Or an analysis step of analyzing a signal received in a session related to a call initiated in the terminal, and the partner to establish a new session based on the analysis result in the analysis step A specifying step for specifying the application server, the terminal, the session control device, or the service cooperation device, a session starting step for starting a new session for the establishment partner specified in the specifying step, and a session, A setting step of setting a session group ID for identifying a plurality of sessions related to the call, which is generated at the time of starting the call in the application server or the terminal, in a signal transmitted in the session each time it is started And an application server cooperation program characterized in that

  According to the present invention, by setting a session group ID to a plurality of sessions related to the same call among a large number of sessions managed in each device, calls established by the plurality of sessions The terminal, session control device, service cooperation device, and application server can easily identify which call the received signal session is for. Therefore, when a plurality of application servers cooperate to provide a service, it is possible to uniquely identify a plurality of sessions between a plurality of devices related to this call, and prevent repeated processing and occurrence of a signal loop. The advantage that it can be obtained.

  Further, according to the present invention, the session group ID, the session ID, and the node information of the establishment partner of the session, which are generated each time a session occurs, are stored in association with each other, and the session group set in the signal to be transmitted / received By storing the ID and the analysis result of the signal in association with each other, there is an advantage that it is possible to prevent the call that has already been analyzed from being grasped and analyzed again.

  Further, according to the present invention, a signal related to a call that has already been received from a session group ID set in a signal to be transmitted / received in a transfer destination device, that is, a terminal, a session control device, a service cooperation device, or an application server Since it can be easily recognized that the signal has been retransmitted, there is an advantage that the signal can be prevented from looping.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

A. First embodiment A-1. Configuration of First Embodiment FIG. 1 is a block diagram showing a configuration of an application server cooperation system according to a first embodiment of the present invention. In an application server cooperation system, when establishing a single call, a plurality of sessions may be used when providing a cooperation service, converting parameters in a signal, or converting a header. In the conventional technology, in each device, that is, the terminals 10-1 and 10-2, the session control device 11, the service cooperation device 12, and the application servers 13-1 and 13-2, a large number of sessions managed by each device. Among them, the session related to a specific call was not known, and the session group could not be determined.

  Thus, in the first embodiment, by setting a session group ID, each device can grasp a session related to a specific call. At this time, a plurality of sessions related to one call are referred to as a session group. Also, identification information for identifying a session group is referred to as a session group ID.

  In FIG. 1, when starting a call, the terminals 10-1 and 10-2 generate and transmit a signal for making a call to the session control apparatus 11. At that time, the session group ID and the session ID are transmitted. Generate and set in the signal (session ID generation means, session group ID generation means, setting means, activation means). Further, when receiving a call, the terminals 10-1 and 10-2 generate a response signal for the received signal related to the received call and transmit the response signal to the session control device 11. At that time, the session of the received signal The group ID and session ID are set in the response signal (session ID generation means, setting means).

  The session control device 11 stores in advance condition information that is information in which a calling subscriber, a called subscriber, or other conditions is associated with a node to which a session is to be established and its order. The session control device 11 refers to the condition information, analyzes the received signal (analyzing means), and performs a session based on the calling subscriber, the called subscriber, or other conditions obtained from the signal. The analysis result indicating the node to be established and the order thereof is obtained, and the signal is transferred to the service cooperation apparatus 12 according to the obtained analysis result. At this time, the session control device 11 searches for a session related to the call that has been analyzed previously from the session group ID or call ID set in the received signal. When it is recognized that there is a session related to the call that has been analyzed before, the service to be linked is determined from the analysis result of the session (specific means) and the corresponding service is executed. When a signal is transmitted to the application server 13-1, 13-2, or the service cooperation apparatus 12, or when it is determined that there is no service to be activated, a signal is transmitted to the terminals 10-1 and 10-2. In addition, the session control apparatus 11 stores the session group ID, the session ID of the session related to the session group ID, and the node with which the session is established in association with each other in the storage unit provided in the session control apparatus 11.

  The service cooperation device 12 stores in advance cooperation condition information, which is information that associates a calling subscriber, a called subscriber, or other conditions with an application server that should start the service in cooperation with the order. Yes. The service cooperation apparatus 12 refers to this cooperation condition information and analyzes the received signal (analyzing means), and based on the calling subscriber, the called subscriber, or other conditions obtained from the signal. An analysis result indicating the application servers to be activated and their order is obtained, and the application servers 13-1 and 13-2 are determined according to the obtained analysis results (identifying means). The service cooperation apparatus 12 terminates the session, newly generates a session (session start means), and transmits a signal to the application servers 13-1 and 13-2. At this time, the session group ID of the terminated session is used as the session group ID.

  In addition, when the service cooperation apparatus 12 receives the signal, the service cooperation apparatus 12 searches for a session related to the call that has been analyzed previously from the session group ID or the call ID set in the signal. When it is recognized that there is a session related to a call that has been analyzed before, an application that determines the service to be linked to be subsequently started from the analysis result of the session (specific means) and executes the service Signals are transmitted to the servers 13-1 and 13-2. At this time, the session group ID of the terminated session is used as the session group ID. In addition, the service cooperation apparatus 12 stores the session group ID, the session ID of the session related to the session group ID, and the node with which the session is established in association with each other in the storage unit included in the service cooperation apparatus 12.

  The application servers 13-1 and 13-2 receive the signal and activate and execute the service. At that time, the session is terminated, a new session is generated (session start means), and a signal is transmitted to the service cooperation apparatus 12. At this time, the session group ID of the terminated session is used as the session group ID. The application servers 13-1 and 13-2 store the session group ID, the session ID of the session related to the session group ID, and the node with which the session is established in association with each other in the storage unit included in the application server.

  FIG. 2 is a conceptual diagram showing an example of the structure of a session in the case where a linked service is provided for one call in the first embodiment. In the first embodiment, as shown in FIG. 2, first, when the terminal 10-1 starts a call, a signal for transmitting the call to the service cooperation apparatus 12 is generated and transmitted via the session control apparatus 11. (Session 1). The service cooperation apparatus 12 analyzes the signal, determines the application server 13-1 for starting the service, newly generates a session, and transmits the signal to the application server 13-1 (session 2). The application server 13-1 receives the signal, activates and executes the service application 14-1, and terminates the session, generates a new session, and transmits the signal to the service cooperation apparatus 12. (Session 3).

  The service cooperation apparatus 12 analyzes the signal, determines the application server 13-2 that starts the service, generates a new session, and transmits the signal to the application server 13-2 (session 4). The application server 13-2 receives the signal, activates and executes the service, terminates the session, generates a new session, and transmits the signal to the service cooperation apparatus 12 (session 5). . The service cooperation apparatus 12 terminates the session 5, newly generates a signal, transmits the signal to the terminal 10-2 via the session control apparatus 11, and starts the session 6 (session 6).

B. Operation of the First Embodiment Next, FIG. 3 to FIG. 7 are flowcharts for explaining a sequence of outgoing call processing according to the first embodiment. In the first embodiment, the response process for incoming calls and the session disconnection process are omitted.

  First, the originating terminal 10-1 generates a signal for requesting establishment of a call to the terminating terminal 10-2 and transmits the signal to the session control apparatus 11, so that the session group ID and A session ID is generated and set in the signal. The terminal 10-1 transmits the signal and starts session 1 (step S11). When the session control apparatus 11 receives the signal, the session control apparatus 11 associates the session group ID described in the signal, the session ID, and the node from which the session is established with each other, and stores it in the storage means provided therein (step S12). . Next, the session control device 11 compares the list of session group IDs stored in the storage unit with the session group ID described in the signal, and determines whether the session group ID is already registered in the list. Is determined (step S13).

  When the session group ID described in the signal is not registered in the list of session group IDs stored in the storage unit of the session control apparatus 11, the session control apparatus 11 analyzes the signal, The analysis result is stored in association with the session group ID (step S14). On the other hand, when the session group ID described in the signal is registered in the stored list of session group IDs, the session control device 11 stores the session group ID in association with the session group ID. Then, the previous signal analysis result and the information of the already established session are referred to (step S15). Here, from the result of the new signal analysis, it is determined that the next transfer destination of the signal is the service cooperation device 12, and the signal is transferred to the service cooperation device 12 (step S16).

  Next, when receiving the signal, the service cooperation apparatus 12 associates the session group ID described in the signal, the session ID, and the information of the session control apparatus 11 that is the node from which the session is established, with its own. It memorize | stores in the memory | storage means with which it is provided (step S17). The service cooperation apparatus 12 compares the list of session group IDs stored in the storage unit with the session group ID described in the signal, and determines whether the session group ID is registered in the list. (Step S18). If the session group ID described in the signal is not registered in the list of stored session group IDs, the service cooperation apparatus 12 analyzes the signal and displays the analysis result as the session group ID. The information is stored in association with the ID (step S19).

  On the other hand, when the session group ID described in the signal is registered in the list of session group IDs stored in the storage unit, the service cooperation apparatus 12 stores the session group ID in association with the session group ID. The previous signal analysis result and the already established session information are referred to (step S20). Here, the service cooperation apparatus 12 determines from the result of signal analysis that the signal is first transferred to the application server 13-1 and then transferred to the application server 13-2. In this case, the application server 13 Since the signal is not transferred to -1, it is determined that the signal is transferred to the application server 13-1 (step S21).

  Next, the service cooperation apparatus 12 terminates the session 1 (step S22), newly generates a signal in which the session group ID of the session 1 and the session ID of the newly allocated session 2 are set, and the application server 13 The signal is transmitted toward -1, and session 2 is started (step S23). Then, the session group ID, the session ID, and the information of the application server 13-1, which is the node to which the session is established, are associated with each other and stored in the storage unit included in the session group ID. Upon receiving the signal, the application server 13-1 terminates the session 2, and stores the session group ID, the session ID, and the information of the service cooperation apparatus 12 that is the session establishing source node in association with each other in the storage unit. At the same time, the service application 14-1 is activated (step S24).

  Next, the application server 13-1 newly generates a signal in which the session group ID of the session 1 and the session ID of the newly allocated session 3 are set, and transmits the signal to the service cooperation apparatus 12. Session 3 is started (step S25). Then, the session group ID, the session ID, and the information of the service cooperation apparatus 12 that is the node to which the session is established are associated with each other and stored in the storage unit provided in the session group ID. When the service cooperation device 12 receives the signal, the service cooperation device 12 associates the session group ID described in the signal with the session ID and the information of the application server 13-1, which is the node from which the session is established, and prepares itself. It memorize | stores in a memory | storage means (step S26).

  Next, the service cooperation apparatus 12 compares the list of session group IDs stored in the storage unit with the session group ID described in the signal, and determines whether the session group ID is already registered in the list. Is determined (step S27). If the session group ID described in the signal is not registered in the list of stored session group IDs, the service cooperation apparatus 12 analyzes the signal and displays the analysis result as the session group ID. The information is stored in association with the ID (step S28).

  On the other hand, when the session group ID described in the signal is registered in the list of session group IDs stored in the storage unit, the service cooperation apparatus 12 stores the session group ID in association with the session group ID. The previous signal analysis result and the already established session information are referred to (step S29). Here, based on the stored signal analysis result, the service cooperation apparatus 12 first determines that the signal is transferred to the application server 13-1, and then the signal is transferred to the application server 13-2. Since the signal has been transferred to -1, it is determined to transfer the signal to the application server 13-2 (step S30).

  Next, the service cooperation apparatus 12 terminates the session 3 (step S31), newly generates a signal in which the session group ID of the session 1 and the session ID of the newly allocated session 4 are set, and the application server 13 -2 is transmitted toward -2, and session 4 is started (step S32). Then, the session group ID, the session ID, and the application server 13-2 that is the node to which the session is established are associated with each other and stored in the storage unit provided in the session group ID. When the application server 13-2 receives the signal, the application server 13-2 terminates the session 4, and stores the session group ID, the session ID, and the information of the service cooperation apparatus 12 that is the session establishment source node in association with each other. And the service application 14-2 is activated (step S33). The application server 13-2 newly generates a signal in which the session group ID of the session 1 and the session ID of the newly allocated session 5 are set, transmits the signal to the service cooperation device 12, and 5 is started (step S34). Then, the session group ID, the session ID, and the information of the service cooperation apparatus 12 that is the node where the session is established are associated with each other and stored in the storage unit.

  When receiving the signal, the service cooperation apparatus 12 stores the session group ID described in the signal in association with the session ID and the information of the application server 13-2 that is the node from which the session is established. It memorize | stores in a means (step S35). Next, the service cooperation apparatus 12 compares the list of session group IDs stored in the storage unit with the session group ID described in the signal, and determines whether the session group ID is already registered in the list. Is determined (step S36). If the session group ID described in the signal is not registered in the list of stored session group IDs, the service cooperation apparatus 12 analyzes the signal and displays the analysis result as the session group ID. The information is stored in association with the ID (step S37). On the other hand, when the session group ID described in the signal is registered in the list of session group IDs stored in the service cooperation apparatus 12, the service cooperation apparatus 12 corresponds to the session group ID. The previous signal analysis result and the information of the already established session are stored with reference (step S38).

  Here, based on the stored signal analysis result, the service cooperation apparatus 12 first determines that the signal is transferred to the application server 13-1, and then the signal is transferred to the application server 13-2. Since the signal to -1 has been transferred and the signal to the application server 13-2 has been transferred, it is determined that the signal is transferred to the session control apparatus 11 (step S39). Next, the service cooperation apparatus 12 terminates the session 5 (step S40), newly generates a signal in which the session group ID of the session 1 and the session ID of the newly allocated session 6 are set, and the session control apparatus 11 is transmitted to 11 and session 6 is started (step S41). Then, the session group ID, the session ID, and the information of the session control device 11 that is the node to which the session is established are associated with each other and stored in the storage unit provided in the session group ID.

  When the session control device 11 receives the signal, the session control device 11 stores the session group ID described in the signal, the session ID, and the information of the service cooperation device 12 that is the node from which the session is established in association with each other. It memorize | stores in a means (step S42). Next, the list of session group IDs stored in the storage means of the session control device 11 is compared with the session group ID described in the signal, and whether or not the session group ID is already registered in the list. Is discriminated (step S43). If the session group ID described in the signal is not registered in the list of session group IDs stored in the storage unit, the session control device 11 analyzes the signal (step S44). .

  On the other hand, when the session group ID described in the signal is registered in the list of session group IDs stored in the storage unit, the session control device 11 stores the session group ID in association with the session group ID. The previous signal analysis result and the already established session information are referred to (step S45). Here, from the stored signal analysis results, the session control apparatus 11 determines that the next transfer destination of the signal is the terminal 10-2 on the incoming side, and transfers it to the terminal 10-2 on the incoming side (step S46). ). The incoming terminal 10-2 performs incoming processing (step S47).

C. Second Embodiment Next, a second embodiment of the present invention will be described.
FIG. 8 is a conceptual diagram showing an example of a session structure in the case where a cooperative service is provided for one call in the second embodiment. In the second embodiment, as shown in FIG. 8, first, the application server 13-1 newly generates a session and transmits it to the service cooperation apparatus 12 (session 1). The service cooperation apparatus 12 analyzes the signal in the same manner as in the first embodiment, terminates the session 1, generates a new signal, and sends the signal to the terminal 10-1 via the session control apparatus 11. Make a call (session 2). The application server 13-1 newly generates a session and transmits it to the service cooperation apparatus 12 (session 3).

  Similar to the first embodiment, the service cooperation apparatus 12 analyzes the signal, determines the application server 13-2 that starts the service, generates a new session, and transmits the signal to the application server 13-2. (Session 4). The application server 13-2 receives the signal, activates and executes the service, terminates the session, generates a new session, and transmits the signal to the service cooperation apparatus 12 (session 5). . The service cooperation apparatus 12 terminates the session 5, newly generates a signal, transmits the signal to the terminal 10-2 via the session control apparatus 11, and starts the session 6 (session 6).

C-2. Operation of Second Embodiment Next, FIG. 9 to FIG. 14 are flowcharts for explaining the sequence of the outgoing call processing according to the second embodiment. In the second embodiment, as in the first embodiment described above, a response process for an incoming call and a session disconnection process are omitted.

  First, in order to establish a call by 3PCC (call processing by a third party), the application server 13-1 generates a signal requesting establishment of the call and transmits the signal to the service cooperation apparatus 12. The application server 13-1 generates a session group ID and a session ID and sets them in the signal. The application server 13-1 transmits the signal and starts session 1 (step S201). When receiving the signal, the service cooperation apparatus 12 stores the session group ID set in the signal, the session ID, and the information of the application server 13-1 that is the node from which the session is established in association with each other. It memorize | stores in a means (step S202). Next, the service cooperation apparatus 12 compares the list of session group IDs stored in the storage unit with the session group ID described in the signal, and determines whether the session group ID is already registered in the list. Is determined (step S203).

  If the session group ID described in the signal is not registered in the list of stored session group IDs, the service cooperation apparatus 12 analyzes the signal and displays the analysis result as the session group ID. The information is stored in association with the ID (step S204). On the other hand, when the session group ID described in the signal is registered in the list of stored session group IDs, the service cooperation apparatus 12 stores the session group ID in association with the session group ID. Then, the previous signal analysis result and the information of the already established session are referred to (step S205).

  Here, the service cooperation apparatus 12 determines to transfer the signal to the session control apparatus 11 from the result of the signal analysis (step S206). The service cooperation device 12 terminates the session 1 (step S207). The service cooperation device 12 newly generates a signal in which the session group ID of the session 1 and the session ID of the newly assigned session 2 are set, transmits the signal to the application server 13-1, and transmits the session 2 Start (step S208). Then, the session group ID, the session ID, and the information of the session control apparatus 11 that is the node to which the session is established are associated with each other and stored in the storage unit provided in itself.

  When the session control device 11 receives the signal, the session control device 11 stores the session group ID described in the signal in association with the session ID and the information of the service cooperation device 12 that is the node from which the session is established. (Step S209). Next, the list of session group IDs stored in the storage means of the session control device 11 is compared with the session group ID described in the signal, and whether or not the session group ID is already registered in the list. Is discriminated (step S210). If the session group ID described in the signal is not registered in the stored list of session group IDs, the session control device 11 analyzes the signal, and the analysis result is displayed as the session group ID. The information is stored in association with the ID (step S211). On the other hand, when the session group ID described in the signal is registered in the list of session group IDs stored in the storage unit, the session control device 11 stores the session group ID in association with the session group ID. The previous signal analysis result and the already established session information are referred to (step S212).

  Here, the session control apparatus 11 determines from the result of signal analysis that the signal is transferred to the terminal 10-1 on the incoming side, and transfers the signal toward the terminal 10-1 (step S213). The incoming terminal 10-1 performs incoming processing (step S214).

  In addition, the application server 13-1 receives the incoming call from the terminal 10-1 on the incoming side, and newly assigns the session group ID of the session 1 and establishes a call by 3PCC (call processing by a third party). A signal in which the session ID of the session 3 is set is generated, the signal is transmitted to the session control apparatus 11, and the session 3 is started (step S215). When the service cooperation apparatus 12 receives the signal, the service cooperation apparatus 12 stores the session group ID described in the signal in association with the session ID and the information of the application server 13-1 that is the node from which the session is established. It memorize | stores in a means (step S216).

  Next, the list of session group IDs stored in the service cooperation apparatus 12 is compared with the session group ID described in the signal to determine whether the session group ID is already registered in the list. (Step S217). If the session group ID described in the signal is not registered in the list of session group IDs stored in the storage unit, the service cooperation apparatus 12 analyzes the signal, and the analysis result Is stored in association with the session group ID (step S218). On the other hand, when the session group ID described in the signal is registered in the list of stored session group IDs, the service cooperation apparatus 12 stores the session group ID in association with the session group ID. Then, the previous signal analysis result and the information of the already established session are referred to (step S219).

  Here, from the result of signal analysis, the service cooperation apparatus 12 first determines that the signal is transferred to the application server 13-2, and then the signal is transferred to the session control apparatus 11, and the signal is transmitted to the application server 13-2. Since the signal has not been transferred, it is determined that the signal is transferred to the application server 13-2 (step S220). Next, the service cooperation apparatus 12 terminates the session 3 (step S221), associates the session group ID included in the received signal, the session ID, and the node to which the session is established, and stores them in the storage unit. .

  The service cooperation apparatus 12 newly generates a signal in which the session group ID of the session 1 and the session ID of the newly allocated session 4 are set, transmits the signal to the application server 13-2, and transmits the session 4 Start (step S222). Then, the session group ID, the session ID, and the information of the application server 13-2 that is the node where the session is established are associated with each other and stored in the storage unit. Upon receiving the signal, the application server 13-2 terminates the session 4 and activates the service application 14-2 (step S223), and sets the session group ID of the session 1 and the session ID of the newly allocated session 5 The set signal is newly generated, the signal is transmitted to the service cooperation apparatus 12, and the session 5 is started (step S224). Then, the session group ID, the session ID, and the information of the service cooperation apparatus 12 that is the node where the session is established are associated and stored in the storage unit. When the service cooperation apparatus 12 receives the signal, the session group ID described in the signal, the session ID, and the information of the application server 13-2 that is the node from which the session is established are associated and stored in the storage unit. (Step S225).

  Next, the list of session group IDs stored in the storage means is compared with the session group ID described in the signal to determine whether the session group ID is already registered in the list (step). S226). When the session group ID described in the signal is not registered in the list of session group IDs stored in the storage unit, the service cooperation apparatus 12 analyzes the signal (step S227). . On the other hand, when the session group ID described in the signal is registered in the list of session group IDs stored in the storage unit, the service cooperation apparatus 12 stores the session group ID in association with the session group ID. The previous signal analysis result and the already established session information are referred to (step S228).

  In any case, based on the result of signal analysis, the service cooperation device 12 first determines that the signal is transferred to the application server 13-2, and then the signal is transferred to the session control device 11, and then to the application server 13-2. Since the signal has been transferred, it is determined that the signal is transferred to the session control device 11 (step S229). Next, the service cooperation apparatus 12 terminates the session 5 (step S230), newly generates a signal in which the session group ID of the session 1 and the session ID of the newly allocated session 6 are set, and the session control apparatus 11 This signal is transmitted to the session 6 to start session 6 (step S231). The service cooperation apparatus 12 associates the session group ID, the session ID, and the information of the session control apparatus 11 that is the node where the session is established with each other, and stores them in a storage unit provided in the service cooperation apparatus 12. When the session control apparatus 11 receives the signal, the session control apparatus 11 associates the session group ID described in the signal with the session ID and the information of the service cooperation apparatus 12 that is the node from which the session is established. It memorize | stores in a memory | storage means (step S232).

  Next, the list of session group IDs stored in the storage means is compared with the session group ID described in the signal to determine whether the session group ID is already registered in the list (step). S233). If the session group ID described in the signal is not registered in the stored list of session group IDs, the session control device 11 analyzes the signal, and the analysis result is displayed as the session group ID. The information is stored in association with the ID (step S234). On the other hand, when the session group ID described in the signal is registered in the stored list of session group IDs, the session control device 11 stores the session group ID in association with the session group ID. Then, the previous signal analysis result and the information of the already established session are referred to (step S235).

  Here, the session control apparatus 11 determines from the stored signal analysis result that the signal is transferred to the terminal 10-2 on the incoming side, and the session control apparatus 11 sends the signal to the terminal 10-2 on the incoming side. The signal is transferred (step S236). The terminal 10-2 performs an incoming call process (step S237).

  According to the first and second embodiments described above, by setting a session group ID to a plurality of sessions related to the same call among a large number of sessions managed in each device, a plurality of sessions are set. It is possible to centrally manage calls established by. Therefore, in the terminals 10-1, 10-2, the session control device 11, the service cooperation device 12, and the application servers 13-1, 13-2, it is easy to identify which call the received signal session is for. It becomes possible.

  In addition, according to the first and second embodiments described above, a session group ID, a session ID, and node information of a session establishment partner that are generated each time a session is generated are stored in association with each other and transmitted / received. By associating and storing the session group ID set to the signal and the analysis result of the signal, there is an effect that the already analyzed call can be grasped and analyzed again.

  Further, according to the first and second embodiments described above, the transfer destination devices, that is, the terminals 10-1 and 10-2, the session control device 11, and the service cooperation are determined based on the session group ID set in the signal to be transmitted and received. Since the apparatus 12 and the application servers 13-1 and 13-2 can easily recognize that the signal related to the already received call has been retransmitted, it is possible to prevent the signal from looping.

  Note that the terminals 10-1 and 10-2, the session control device 11, the service cooperation device 12, and the application servers 13-1 and 13-2 described above have a computer system therein. The operation processes of the terminals 10-1 and 10-2, the session control device 11, the service cooperation device 12, and the application servers 13-1 and 13-2 described above are computer-readable recording media in the form of programs. The computer system reads out and executes this program, and the above processing is performed. Here, the computer system includes a CPU, various memories, an OS, and hardware such as peripheral devices.

Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The “computer-readable recording medium” refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, and a CD-ROM, and a storage device such as a hard disk built in the computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory in a computer system serving as a server or a client in that case, and a program that holds a program for a certain period of time are also included. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

It is a block diagram which shows the structure of the application server cooperation system by 1st Embodiment of this invention. In this 1st embodiment, it is a conceptual diagram which shows the example of the structure of a session in the case of providing a cooperation service with respect to one call. It is a flowchart for demonstrating the sequence of the transmission process by this 1st Embodiment. It is a flowchart for demonstrating the sequence of the transmission process by this 1st Embodiment. It is a flowchart for demonstrating the sequence of the transmission process by this 1st Embodiment. It is a flowchart for demonstrating the sequence of the transmission process by this 1st Embodiment. It is a flowchart for demonstrating the sequence of the transmission process by this 1st Embodiment. In this 2nd Embodiment, it is a conceptual diagram which shows the example of the structure of a session in the case of providing a cooperation service with respect to one call. It is a flowchart for demonstrating the sequence of the transmission process by this 2nd Embodiment. It is a flowchart for demonstrating the sequence of the transmission process by this 2nd Embodiment. It is a flowchart for demonstrating the sequence of the transmission process by this 2nd Embodiment. It is a flowchart for demonstrating the sequence of the transmission process by this 2nd Embodiment. It is a flowchart for demonstrating the sequence of the transmission process by this 2nd Embodiment. It is a flowchart for demonstrating the sequence of the transmission process by this 2nd Embodiment. It is a block diagram which shows the structure of the application server cooperation system by a prior art. It is a block diagram which shows the structure of the application server cooperation system which has arrange | positioned the service cooperation apparatus which cooperates a some application server between an application server and a session control apparatus by a prior art.

Explanation of symbols

10-1, 10-2 terminal 11 session control device 12 service cooperation device 13-1, 13-2 application server 14-1, 14-2 service application

Claims (8)

A plurality of application servers that provide each service, a terminal that enjoys a service provided by the application server, a session control device that performs session control of the terminal and the application server, a plurality of the application servers, and the session control An application server cooperation system that is arranged between a device and a service cooperation device that cooperates a plurality of the application servers,
A session group ID generating means for generating a session group ID for identifying a plurality of sessions related to the call when the application server or the terminal starts the call;
Analyzing means for analyzing signals received in a session associated with the call;
Based on the analysis result by the analysis means, the specifying means for specifying the application server, the terminal, the session control device, or the service cooperation device that is a partner for establishing a new session;
Session starting means for starting a new session for the establishment partner specified by the specifying means;
A setting means for setting the session group ID generated by the session group ID generation means in a signal transmitted in the session each time a new session associated with the call is started;
An application server cooperation system comprising: Session ID generation means for generating a session ID for identifying the session each time a new session is started;
Storage means for storing the session group ID in association with the session ID of the session established in connection with the call using the session group ID;
The specifying means associates the information on the establishment destination of the session obtained by analyzing the signal with the analyzing means, the session group ID and session ID set in the signal, and stores the information in association with the session group ID Based on the session ID stored in the means, identify the application server, the terminal, the session control device, or the service cooperation device that is the establishment partner of a new session,
The setting means includes the session group ID generated by the session group ID generation means on the signal transmitted in the session each time a new session associated with the call is started, and the session ID generation means. Set the session ID of the generated session.
The application server cooperation system according to claim 1. The session group ID generation means is provided in the terminal,
The terminal includes an activation unit that sends a signal in which the session group ID generated by the session group ID generation unit is set to a session establishment destination to request establishment of a call.
The application server cooperation system according to claim 1 or 2, wherein The session group ID generation means is provided in the application server,
The application server includes an activation unit that requests establishment of a call by transmitting a signal in which a session group ID generated by the session group ID generation unit is set to a session establishment destination.
The application server cooperation system according to claim 1 or 2, wherein A plurality of application servers that provide each service, a terminal that enjoys a service provided by the application server, a session control device that performs session control of the terminal and the application server, a plurality of the application servers, and the session control An application server cooperation method in an application server cooperation system that is arranged between a device and a service cooperation device that cooperates a plurality of the application servers,
A session group ID generating step for generating a session group ID for identifying a plurality of sessions related to the call when a call is started in the application server or the terminal;
Analyzing the signal received in the session associated with the call;
Based on the analysis result in the analysis step, the specifying step of specifying the application server, the terminal, the session control device, or the service cooperation device that is a partner to establish a new session;
A session start step for starting a new session for the establishment partner specified in the specifying step;
A setting step of setting the session group ID generated in the session group ID generation step to a signal transmitted in the session each time a new session associated with the call is started;
An application server linkage method comprising: An activation step of requesting establishment of a call by transmitting a signal in which the session group ID generated by the session group ID generation step is set to a session establishment destination;
The session group ID generation step is
The application server cooperation method according to claim 5, wherein the application server cooperation method is performed in the terminal. An activation step of requesting establishment of a call by transmitting a signal in which the session group ID generated by the session group ID generation step is set to a session establishment destination;
The session group ID generation step is
The application server cooperation method according to claim 5, wherein the application server cooperation method is performed in the application server. A plurality of application servers that provide each service, a terminal that enjoys a service provided by the application server, a session control device that performs session control of the terminal and the application server, a plurality of the application servers, and the session control In a computer used in an application server cooperation system that is arranged between a device and a service cooperation device that cooperates a plurality of the application servers,
Analyzing the signal received in a session for a call initiated at the application server or the terminal;
Based on the analysis result in the analysis step, the specifying step of specifying the application server, the terminal, the session control device, or the service cooperation device that is a partner to establish a new session;
A session start step for starting a new session for the establishment partner specified in the specifying step;
Each time a session is started, a session group ID for identifying a plurality of sessions related to the call, which is generated when the call is started in the application server or the terminal, is set in a signal transmitted in the session. Configuration steps;
An application server cooperation program characterized in that

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