JP4437452B2 - COMMUNICATION CONTROL DEVICE, COMMUNICATION TERMINAL, AND COMMUNICATION CONTROL METHOD - Google Patents

Description

  The present invention relates to a communication control device, a communication terminal, and a communication control method, and more specifically, a plurality of communication terminals / devices that form a PAN (Personal Area Network) by user operation or autonomous control of the communication terminal / device. The present invention relates to a communication control device, a communication terminal, and a communication control method for managing communication as a group and performing communication control between communication terminals / devices.

  In mobile communication systems such as conventional GSM (Global System for Mobile Communications) and IMT-2000, SIM (Subscriber Identity Module) or USIM (Universal Subscriber ID (hereinafter referred to as Universal Subscriber IM)) User identification using a card is performed. When a user subscribes to a mobile communication service provided by a mobile communication carrier, the user can use the mobile communication service by purchasing from the mobile communication carrier or using a USIM card provided. .

  Specifically, the user can use the service by attaching the USIM card to the communication terminal to access the mobile communication service to which he / she subscribes using the communication terminal as his / her communication terminal.

  The USIM card stores user subscriber information and identification information (user attribute information such as address, name, and subscription contents, and communication terminal attribute information such as address and telephone number). A communication terminal is treated as having identification information (address, telephone number, etc.) stored in the USIM card by mounting the USIM card.

  On the mobile communication network side, a communication control device provided to control the network manages USIM card information, and stores subscriber information and identification of users stored in the USIM card mounted on the communication terminal. By notifying and registering information to the mobile communication network, the subscriber who uses the communication terminal, that is, the owner of the USIM card attached to the communication terminal is identified. When a communication service is provided to a user, a call to a USIM card, a call to a telephone number, and establishment of a session are processed by the communication control device so as to call and establish a session with a communication terminal equipped with the USIM card. The

  For example, in the case of a telephone service, a telephone number given to a user is managed in a mobile communication network in association with a USIM card, not a communication terminal, and when the USIM card is attached to a certain communication terminal, The communication terminal is treated as having the user's telephone number, and a call to the telephone number is processed to receive the communication terminal. In such a management method using a USIM card, the user can flexibly select an appropriate communication terminal according to his / her preference and situation, and can use the communication terminal as his / her own communication terminal. was there.

  FIG. 7 is a block diagram showing a schematic configuration of a system including subscriber information management, call control / session control in a conventional mobile communication network. The mobile communication network includes a communication terminal 109, a radio access network 106, a core network 104, The multimedia communication control subsystem 100 is configured. The communication terminal 109 is equipped with a USIM card 110 as a device for identifying subscribers of users in use. The radio access network 106 is an access network that provides a means for the communication terminal 109 to access the core network 104 via a radio section, and includes a base station 107, a base station controller 108, and the like. The core network 104 is a network and control system that performs transmission of information between communication terminals, connection control, communication management, and the like, and includes location management information of the communication terminal 109 and subscriber information of a user who uses the communication terminal 109. VLR / HLR (Visible Location Register / Home Location Register) 105, which is a location management server that manages the above.

  In addition, the multimedia communication control subsystem 100 is a subsystem intended to realize an additional function for providing an IP-based multimedia communication service on the packet switching system of the core network 104. The multimedia communication control subsystem 100 includes an application server (AS) 101, a call session control function (CSCF) 102 that provides a session control function between communication terminals, and a subscriber information management device HSS (Home). (Subscriber Server) 103 and the like.

  As a session control protocol, SIP (Session Initiation Protocol) is adopted. The CSCF 102 provides a call and session state control function between communication terminals, and by interacting with a user in SIP or an HSS 103 functioning as a registration server of the communication terminal 109, a user who can use / communicate with the service is provided. In addition to registering status and identification information, it manages and transmits information for controlling the session, and controls session connection.

  In addition, an AS 101 that provides a more advanced application service to the user by using basic functions provided by the multimedia communication control subsystem 100 is provided. The CSCF 102 also has interface means for notifying the AS 101 of information related to the session and the user / communication terminal and accepting control of the session by the AS 101.

  An outline of subscriber information managed by the HSS 103 or the like in a conventional mobile communication network will be described with reference to FIG. Subscriber information of a conventional mobile communication network is hierarchically configured from a private identifier, a public identifier, a service profile, and the like. This private identifier is unique identification information (ID) used by the communication service provider for subscriber management (registration / management of subscribers and available services, approval of access to services, billing, etc.). ).

  In FIG. 8, the private identifier 1 is external to the system because of the property that the telecommunications carrier only needs to be used in the system in order to manage its own subscribers, and for security to protect the subscriber information. It is sufficient that the information can be managed in a private or unique information format. For example, it is managed in a format called NAI (Network Access Identifier). This private identifier 1 also includes a subscriber identification number for the multimedia communication control subsystem 100. In this system configuration, since multimedia communication control is provided as the subsystem 100, for example, subscriber information for a basic communication service such as a telephone and subscriber information for a multimedia service are included. This is because they need to be managed separately. Only one private identifier 1 is uniquely assigned to one USIM card 110.

  Next, the public identifiers 1 to 3 are IDs that are disclosed and used when a user receives a service or communicates with other users, for example, a telephone number, a mail address, a SIP-URI, or the like. Is included. One USIM card 110 needs to have at least one public identifier, but there may be a plurality. Further, it is not necessary for all public identifiers to be stored in the USIM card 110, and it is sufficient that they are managed in association with the USIM card in the network.

  The service profile is a set of information related to services that the user subscribes to and can use, and includes information such as attributes and provision conditions for the services of the user and the communication carrier. The service profile is managed and stored in association with one or more public identifiers used when using the service. On the other hand, each public identifier is associated with only one service profile.

  The subscriber information described above is transferred from the HSS 103 to the CSCF 102 and stored when the communication terminal 109 is registered in the multimedia communication control subsystem 100. Also provided from the HSS 103 to the AS 101. The HSS 103 that manages the subscriber information is an HSS installed in a USIM home domain owned by the user (a mobile communication network provided by a subscribed communication carrier).

  Next, a case where a communication terminal establishes a session with another communication terminal will be described. First, when a communication terminal starts communication with a partner communication terminal, the communication terminal sends a call connection request specifying a public identifier of the partner communication terminal and a session connection request to the mobile communication network, thereby calling the CSCF. Request session establishment. When CSCF accepts a call request or session connection request, the public identifier of the partner communication terminal included in these is valid, authentication of the caller communication terminal and user, and the requested service can be provided It is confirmed by referring to the subscriber information managed by the HSS, and it is confirmed that the call connection request and the session connection request are valid and can be processed.

  Thereafter, the CSCF sends a call connection request and a session connection request to the partner communication terminal, thereby controlling the call connection and session connection between the partner communication terminal and the caller communication terminal. Here, the CSCF only refers to and confirms the public identifier of the partner communication terminal specified in the call connection request or the session connection request, and rewrites it to the public identifier of another communication terminal. Such processing is not performed.

  Further, when the CSCF accepts a session connection request, the CSCF refers to the service profile managed by the HSS in association with the public identifier specified therein, and makes a call described in the service profile. If the session requested by the session connection request matches the contents, attributes, conditions, etc. of the service that can be used by the original communication terminal and the other communication terminal or can be provided to these communication terminals, the session Control to make a connection. At this time, the CSCF can also control to make a session connection in which the content, type, etc. of the session are changed in accordance with the description of the service profile.

Next, a session establishment method using SIP will be described with reference to FIG.
FIG. 9 is a diagram for explaining a procedure when the communication terminal C requests the communication terminal A to establish a session. First, the communication terminal C transmits a request addressed to the communication terminal A to the session control apparatus (S101). In SIP, this request message is called an INVITE message. When receiving the request from the communication terminal C, the session control apparatus transfers the request to the session control apparatus that manages the communication terminal A, and the request is relayed through one or more session control apparatuses and transmitted to the communication terminal A ( S102). Here, there is shown a case where there is one session control device that relays a request, that is, a case where communication terminal C and communication terminal A are managed by the same session control device. The communication terminal A that has received the request rings a ringing bell that informs that there is an incoming call (S103), and the session control device returns a ringing bell that informs the partner communication terminal C that the calling is in progress (S104). ). This ringing in SIP is called a 180 Ringing response.

  When the user responds, for example, by pressing the reception button of the telephone, the communication terminal A transmits a response message addressed to the communication terminal C to the session control apparatus (S105), and the session control apparatus communicates with the communication terminal C. A response message from terminal A is transmitted (S106). In SIP, this response message is called a 200 OK response. Upon receiving the response message, the communication terminal C transmits a confirmation message addressed to the communication terminal A to the session control apparatus (S107), and the session control apparatus sends a confirmation message from the communication terminal C to the communication terminal A. Transmit (S108). In SIP, this confirmation message is called an ACK request. The communication terminal or session control apparatus that receives the request may transmit a provisional response to the request transmission side, for example, a message such as 100 Trying, which is not illustrated in this specification. In this way, a session between the communication terminal C and the communication terminal A is established by the request, response, and confirmation.

  When making a request to the communication terminal A, it is possible to specify a codec, an IP address, and the like used for communication by using SDP (Session Description Protocol). This SDP is a session description indicating the session name, identifier, purpose, etc., a time description indicating the session start time, end time and number of repetitions, a media description indicating the IP address, port number, media type, codec, etc. Is a protocol for describing information about secure sessions. Also, by using this SDP, information about a plurality of media that can be held and supported by each communication terminal is described, and further, by describing the priority thereof, a function that is commonly held among communication terminals is provided. A negotiation mechanism is provided that allows confirmation and selection of the optimum session type between the two communication terminals. When making a request to the communication terminal A, for example, the communication terminal A uses H.264 as a video codec. 263, H.I. When information indicating that the H. 261 is supported is included in the SDP, the communication terminal C can select the H.264 supported by the communication terminal C from the two types of video codecs. 261 is selected and H.264 is selected in the SDP of the response message. By including information requesting communication in H.261, both communication terminals have a common H.264 standard. A session using the H.261 video codec is established.

  In such a conventional communication control method, a public identifier made up of address information specified when requesting a call connection or a session connection is managed by the HSS, CSCF, etc. The public identifier of the destination communication terminal is known, and it is necessary for the caller communication terminal to include the public identifier in the call connection request and the session connection request. In other words, the caller communication terminal needs to specify the partner communication terminal in advance and send out a call connection request and a session connection request, and the CSCF only applies to connections between designated communication terminals. However, there was a problem that it was not possible to provide advanced services.

  In future mobile communication networks, when high-quality multimedia services and advanced services that are a complex combination of various functions are provided, users will have multiple communication terminals and devices that can access the network and its services. Own and use these communication terminals and devices according to the user's situation, service content, communication partner, desired quality, etc., and enjoy sufficient service quality and performance. A request to do so arises. In order to satisfy the request, for example, when a user owns a plurality of communication terminals or devices, a small network group (Personal Area Network, hereinafter) is operated by user operation or autonomous control of the communication terminal / device. (Referred to as PAN), and they communicate with each other via PAN, sharing functions according to their characteristics, or using different communication terminals according to their capabilities and attributes Transferring calls and sessions on demand is being considered.

  In addition, as a service provider or a mobile communication carrier, a plurality of communication terminals owned by a user can be managed by collectively managing and controlling communication terminals / device groups that are owned by the same user and constitute a PAN. It is possible to provide advanced services that take attributes and capabilities into account, and by providing services that meet the user's needs as described above, it is possible to improve convenience and efficiency that is consistent with the characteristics and resource allocation of mobile communication networks. Demands to provide an efficient service.

  However, as described above, the conventional communication control method is based on management information on the premise of one-to-one correspondence between one communication terminal with a USIM card and a user who owns and uses the USIM card. Therefore, it is difficult for a user to own a plurality of communication terminals, or conversely, it is difficult to grasp that a plurality of communication terminals belong to the same user. Even if it is configured, it is difficult to control communication from a mobile communication network by treating a group of communication terminals constituting a PAN as a group. Problems in the conventional system are as follows.

(1) Only communication control specified for one communication terminal, or communication control for associating a communication terminal with a user on a one-to-one basis can be performed.
(2) Profile information necessary for communication control of communication terminals constituting a PAN as a group, for example, a session that can be realized by a PAN network structure constituted by a group of communication terminals or a combination of a plurality of communication terminals Information on capabilities, preferences, etc. cannot be managed.
(3) Even if owned by the same user, control for accessing the service cannot be performed by a communication terminal other than the USIM.
(4) Control that allows the user to freely select a communication terminal that uses the service cannot be performed.

  Specifically, even if the user 1 owns or can use a plurality of communication terminals, when another user 2 requests the user 1 to establish a session, the user 2 There is a problem in that it is necessary to make a call by specifying one of the communication terminals owned by the user 1, and it is not possible to use the optimum communication terminal owned by the user 1 and usable. . In addition, there is a problem that the user 1 cannot use the service by selecting an optimum communication terminal from the owned communication terminals according to the type of service and the processing capability required for the service.

  Further, in the conventional mobile communication network, SIP is used as a session control protocol, but SIP is basically a protocol used when a communication terminal and a communication terminal establish a one-to-one session, There is a problem that a many-to-many session cannot be established like a session between communication terminal groups constituting a PAN. On the other hand, when the session control means receives a session establishment to the PAN, a method of selecting a specific communication terminal and establishing a session has been studied, and the procedure is shown in FIG. 10 below.

  FIG. 10 is a diagram for describing a procedure for selecting a specific communication terminal and establishing a session when the session control apparatus receives a session establishment to the PAN. First, the communication terminal C transmits a session establishment request to the user who owns the communication terminal group constituting the PAN by designating the PAN public identifier instead of the public identifier of the specific communication terminal (S111). . When the session control device receives a request designating PAN, the session control device refers to a PAN profile managed in association with a public identifier for PAN and determines a calling method to PAN. Here, the determination of the calling method to the PAN is to select a specific communication terminal as a call destination from a group of communication terminals constituting the PAN. For example, when the communication terminal A is selected, communication to the communication terminal A is performed. The request from the terminal C is transferred (S112). The communication terminal A that has received the request rings a call bell that informs that there is an incoming call (S113), and the session control device returns a ringing bell that informs the communication terminal C that the call is in progress (S114). .

  Next, when the user responds by pressing, for example, a telephone reception button, the communication terminal A transmits a response message addressed to the communication terminal C to the session control apparatus (S115). A response message from the communication terminal A is transmitted to C (S116). Upon receiving the response message, the communication terminal C transmits a confirmation message addressed to the communication terminal A to the session control apparatus (S117), and the session control apparatus sends a confirmation message from the communication terminal C to the communication terminal A. Transmit (S118). In this way, a session between the communication terminal C and the communication terminal A is established by the request, response, and confirmation.

  FIG. 11 is a diagram for explaining a procedure when a request is simultaneously transferred to each of the communication terminal groups constituting the PAN when the session control apparatus receives a session establishment to the PAN. First, the communication terminal C specifies a public identifier for PAN and transmits a session request to a user who owns a communication terminal group constituting the PAN (S121). When the session control apparatus receives a request to the PAN, the session control apparatus refers to the PAN profile managed in association with the public identifier for the PAN and determines a calling method for the PAN. Here, as a calling method to the PAN, when it is determined to simultaneously transfer independent requests to the respective communication terminals of the communication terminal group constituting the PAN, the communication is performed to each of the communication terminals A and B. The request from terminal C is transferred (S122). Receiving the request, the communication terminal A rings a call bell that informs that there is an incoming call (S123), and the session control device returns a bell ring to notify the communication terminal C that the call is being performed (S124). . Similarly, the communication terminal B that has received the request rings a call bell that informs that there is an incoming call (S125), and the session control device returns a bell ring that informs the communication terminal C that the call is in progress. (S126).

  Here, if the user selects the communication terminal B as the communication terminal that responds to the request, the communication terminal B returns a response to the communication terminal C in response to the request to the session control device (S127). The session control apparatus transmits the received response to the communication terminal C (S128), transmits a message for canceling the request to the communication terminal A (S129), and a response by returning the response from the communication terminal A Avoid collisions. Next, when there is a response to the cancellation from the communication terminal A (S130) and the confirmation from the session control device is received by the communication terminal A (S131), the procedure for canceling the request to the communication terminal A is completed. Next, when receiving a response from the communication terminal B, the communication terminal C transmits a confirmation message addressed to the communication terminal B to the session control apparatus (S132), and the session control apparatus sends a confirmation message to the communication terminal B. Is transmitted (S133). In this way, a session is established between the communication terminal C and the communication terminal B.

  In such a conventional communication control method, a communication request is transmitted by designating a PAN, one of the communication terminals constituting the PAN is selected, and the selected communication terminal is connected to the selected communication terminal. Although it is possible to establish a session, it has been difficult to select a plurality of communication terminals from a group of communication terminals constituting the PAN, and to establish each of the communication terminals by dividing the session. In other words, since it is a control method based on SIP, it is possible to finally establish a one-to-one session when requesting the establishment of a session to a group of communication terminals constituting the PAN. A one-to-many or many-to-many session cannot be established by a plurality of communication terminals constituting the PAN. Further, in the conventional communication control method, it is difficult for the user to selectively establish a session because the session control device determines a calling method to the PAN. Further, a method of including in a response a call instruction request for instructing a caller communication terminal to specify one or more communication terminals of a communication terminal group constituting a PAN and re-call There was a problem that there was no.

  The present invention has been made in view of the above circumstances, and in a mobile communication network, a session establishment request specifying a PAN is divided into a plurality of communication terminals with a plurality of communication terminals constituting the PAN. The purpose is to be able to establish it.

  More specifically, in a mobile communication network, a public identifier for specifying and identifying a PAN configured by a communication terminal / device owned by a user is added and managed, and identification of each communication terminal constituting the PAN is performed. Information, PAN network configuration, profile information necessary for handling PAN such as communication terminal preferences recommended for use corresponding to services, linked to a public identifier for PAN specification, and a communication control device With reference to these, it is configured to control call connection or session connection, and by enabling communication control of multiple communication terminal groups as a group, the user can freely and flexibly select an appropriate communication terminal in the PAN. To use services, or combine multiple communication terminals to use one service Providing a mobile communication system is possible or to an incoming call to the optimal communication terminal a call or session establishment request from other user,

  In addition, when a session establishment request is transmitted or responded, a mobile terminal that can manage and control the selection of a communication terminal when establishing a session for one communication terminal among communication terminal groups constituting a PAN. Providing a communication system;

  Further, in response to a session establishment request specifying a PAN, a plurality of communication terminals are selected from a group of communication terminals constituting the PAN, a session is established with each communication terminal, and communication is performed by combining these. Providing a mobile communication system capable of providing a service and using the service without giving a load to a communication terminal on the calling side due to a request for session establishment being divided into sessions with a plurality of communication terminals The purpose is to do.

  In order to solve the above problems, a first technical means of the present invention is a communication control device for controlling connection between communication terminals in a mobile communication network, wherein a communication terminal connectable to the mobile communication network is another A means for managing one or a plurality of public identification information for specifying a group configured together with the communication terminal, and a call connection request specifying the public identification information for specifying the group from the partner communication terminal used by the communication partner or Means for accepting a session connection request; means for managing control logic for the group; means for selecting any one of the communication terminals constituting the group from the control logic; and the call connection request or session connection request To divide and establish a call connection or session connection with each of the selected multiple communication terminals It is obtained by further comprising a, and means for sending a request for re-connection to the serial communication partner terminal.

  According to a second technical means of the present invention, in the first technical means, the reconnection request includes public identification information of the selected plurality of communication terminals and session assignment information for the selected plurality of communication terminals. It is characterized by including.

A third technical means of the present invention is a communication terminal connected to a mobile communication network and capable of call connection or session connection with another communication terminal, wherein the communication terminal includes a plurality of the other communication terminals. comprising means for transmitting a call connection request or a session connection request, and means for receiving a response corresponding to the call connection request or a session connection request the transmission to a group constituted by, included in the response In order to divide and establish the call connection request or session connection request into call connection or session connection with each of the plurality of other communication terminals based on the instruction information, for each of the plurality of other communication terminals The call connection request or the session connection request is transmitted again .

According to a fourth technical means of the present invention, in the third technical means, the instruction information included in the response includes public identification information of a plurality of other communication terminals constituting the group, and the plurality of other communication terminals. And session assignment information for.

A fifth technical means of the present invention is a communication terminal connected to a mobile communication network and capable of call connection or session connection with another communication terminal, and the communication terminal forms a group together with another communication terminal. configured having phase means for receiving a call connection request or a session connection request from the manual communication terminal, and means for transmitting a response corresponding to the call connection request or a session connection request thus received to the other party's communication terminal, the response, in order to establish by dividing the call connection request or a session connection request to the call connection or session connection with each of the plurality of communication terminals constituting the group, the public identification information of the plurality of communication terminals And session allocation information for the plurality of communication terminals.

A sixth technical means of the present invention is a communication control method for a communication control apparatus for controlling connection between communication terminals in a mobile communication network, wherein the communication terminal connectable to the mobile communication network is configured together with other communication terminals. A call connection request or a session connection request that manages one or more public identification information for specifying a group to be designated and specifies the public identification information for specifying the group from the other communication terminal used by the communication partner A step of selecting a plurality of communication terminals constituting the group from control logic for the group, and a call connection request or a session connection request to each of the selected plurality of communication terminals. In order to establish connection or session connection separately, it is necessary to reconnect to the partner communication terminal. A step of delivering is obtained by further comprising a.

According to a seventh technical means of the present invention, in the sixth technical means, the reconnection request includes public identification information of the selected plurality of communication terminals and session assignment information for the selected plurality of communication terminals. It is characterized by including.

An eighth technical means of the present invention is a communication control method for a communication terminal connected to a mobile communication network and capable of call connection or session connection with another communication terminal, comprising a plurality of the other communication terminals. transmitting a call connection request or a session connection request to the group consisting the steps of receiving a response corresponding to the call connection request or a session connection request the transmission, based on the instruction information contained in the response In order to divide and establish the call connection request or session connection request into call connections or session connections with each of the plurality of other communication terminals, a call connection request is again made to each of the plurality of other communication terminals. Or a step of transmitting a session connection request.

According to a ninth technical means of the present invention, in the eighth technical means, the instruction information included in the response includes public identification information of a plurality of other communication terminals constituting the group, and the plurality of other communication terminals. And session assignment information for.

A tenth technical means of the present invention is connected to a mobile communication network, a call connection or a session connection possible communication terminal of the communication control method with another communication terminal, the communication terminal other communication terminals together constitute the group, receiving the phase hand communication terminal or we call connection request or a session connection request, and transmitting a response in response to the call connection request or a session connection request thus received to the other party's communication terminal The response includes a public identification of the plurality of communication terminals in order to divide and establish the call connection request or the session connection request into a call connection or a session connection with each of the plurality of communication terminals constituting the group. Information and session allocation information for the plurality of communication terminals .

  According to the present invention, in a mobile communication network, a session establishment request specifying a PAN can be divided and established for each session with a plurality of communication terminals constituting the PAN. The degree of freedom of the user can be improved in the communication service.

  FIG. 1 is a diagram showing a schematic configuration example of a mobile communication network system according to an embodiment of the present invention, in which 1 is an application server, 2 is a mobile communication network, 3 is a core network, 4 is a communication control device, 5, 6 and 7 are radio access networks, 8 is a radio section, 9 is a PAN, and 10 is a USIM card. The communication terminals # 1 to # 3 constitute a PAN 9, and the USIM card 9 is attached to the communication terminal # 1 so that it can be connected to the mobile communication network 2. The partner communication terminal # 4 is a communication terminal that is a communication partner of the communication terminals # 1 to # 3.

  The mobile communication network 2 of the present invention is composed of radio access networks 5, 6, 7 and a core network 3. The wireless access networks 5 and 6 are access networks that provide means for the communication terminals # 1 to # 3 to access the core network 3 via the wireless section 8, and the wireless access network 7 This is an access network that provides means for accessing the core network 3 via the section 8, and is composed of a radio base station, a base station management system, and the like, as in the prior art. The core network 3 is a network and control system for performing transmission of information, connection control, communication management, and the like between the communication terminal # 4 and the communication terminals # 1 to # 3 as communication partners, and includes a communication control device 4. The communication control device 4 includes session control means 4a for performing connection control, session management, etc. between the communication terminal # 4 and the communication terminals # 1 to # 3, and position management information of the communication terminals # 1 to # 3. And subscriber information management means 4b for managing subscriber information of users using communication terminals # 1 to # 3, subscriber information database 4c for storing subscriber information of each subscriber, communication partner A media gateway 4d that converts application data during a session connection between the communication terminal # 4 and the communication terminals # 1 to # 3 is provided.

  In the mobile communication network 2 of the present invention, the control function of the multimedia communication service is provided in the core network 3, so that the functions provided in the multimedia communication control subsystem in the prior art are the functions of the core network 3. Included as part of the function. More specifically, functions such as CSCF and HSS in the prior art are included in the session control means 4a and the subscriber information management means 4b of the communication control device 4, respectively.

  The USIM card 10 is attached to the communication terminal # 1, and the subscriber identifier stored in the USIM card 10 is registered in the subscriber information management means 4b of the communication control device 4. In addition, the communication terminal # 1 constitutes a PAN 9 that is a small network group together with the communication terminal # 2 and the communication terminal # 3. The communication terminal # 1 is connected to the radio access network 5 and further to the core network 3 via the radio section 8, and has a connection means from the PAN 9 to the mobile communication network 2. The communication terminal # 2 is a communication terminal that is not attached with the USIM card 10 but has means for connecting to the mobile communication network 2. The communication terminal # 3 is one of the communication terminals that constitute the PAN 9 although the USIM card 10 is not attached and no connection means to the mobile communication network 2 is provided. Note that when connecting to the mobile communication network 2, the communication terminal # 3 is connected via the communication terminal # 1 or the communication terminal # 2 having a connection means.

  In the subscriber information management means 4b, information on the PAN 9 constituted by the communication terminal # 1, the communication terminal # 2, and the communication terminal # 3, and identification information and attribute information of these communication terminals are registered and managed. The subscriber information management means 4b manages subscriber information corresponding to the subscriber identifier. The association between a private identifier, a public identifier, a service profile, and the like, which are subscriber information of individual communication terminals, is the same as that in the related art. In addition, in the subscriber information management means 4b, as the public identifier for the PAN 9, and the profile information of the PAN 9 associated therewith, the identification information of the communication terminals constituting the PAN 9, information for managing, controlling, and using the PAN 9 Etc. are included. These subscriber information, PAN 9 information, etc. are stored and stored in the subscriber information database 4c connected to the subscriber information management means 4b, and are read, rewritten, deleted, etc. from the subscriber information management means 4b as needed. Access is possible.

  The session control means 4a processes a session connection request from a certain user (communication terminal) to another user (communication terminal), and acquires subscriber information of the connection destination user from the subscriber information management means 4b. Reference is made and session connection control with the communication terminal of the connection destination is performed. Further, the session control means 4a determines whether or not the processing in the application server 1 is necessary from the subscriber information, obtains instructions and information from the application server 1 as necessary, and controls to connect an appropriate session. Control the transfer of data. The application server 1 provides an application service such as an advanced multimedia communication service on a session for which establishment is requested, as in the conventional technology. Further, when it is necessary to perform complicated session control, a function for connecting a session, such as an instruction and control to the session control means 4a, is supported.

  Further, the session control means 4a determines whether the processing in the media gateway 4d is necessary based on the subscriber information and the type and attribute of the requested session, and connects the appropriate session to the media gateway 4d and the session if necessary. Control the transfer of data. The media gateway 4d relays a session between the connection source communication terminal and the connection destination communication terminal, and relays application data transmitted using the session and performs conversion as necessary. For example, the application data from the connection source is divided into a plurality of media types such as voice and video, and the session is connected to a plurality of communication terminals corresponding to the divided media.

  Also, as a process in the opposite direction, application data transmitted using each session with a plurality of communication terminals is multiplexed as one application data, and a session connected to the connection source communication terminal is To be transmitted to the communication terminal. The control performed between the media gateway 4d and the session control unit 4a can be realized in an integrated manner with the control between the application server 1 and the session control unit 4a described above. It is possible to integrate the function of the media gateway 4d into the application server 1, and in this case, the application server 1 also provides the service of the media gateway 4d. As a control protocol for the media gateway 4d, for example, H.264 is used. 248 (Megaco) or the like is used.

An example of a method for managing a group of communication terminals constituting a PAN as a group in the mobile communication network system described above will be described.
FIG. 2 is a diagram showing a schematic configuration example of subscriber information including information for managing a PAN in the present invention. In the figure, the subscriber information database 4c stores and stores subscriber information of each subscriber to the mobile communication service. In the present invention, in addition to conventional subscriber information, a PAN public identifier is stored and managed as PAN 9 information. The public identifier is information such as a telephone number, a mail address, and a SIP-URI for identifying and specifying the communication terminal when the communication terminal performs communication control such as call connection and session connection, as in the prior art. Although it is a so-called communication terminal address, the public identifier for PAN does not specify one of the communication terminals constituting PAN 9 and requests a call connection or session connection, but collects a group of these communication terminals collectively. Used to specify.

  In the example shown in FIG. 2, two public identifiers 1 and 2 are managed as public identifiers for PAN. The reason why the plurality of public identifiers are assigned to the same PAN 9 is that the identification information / address system, description method, and the like differ depending on the type and attribute of the service. For example, a telephone number is used as identification information in the telephone service, and a mail address is used in electronic mail. In the example of FIG. 2, the public identifier 1 is assigned a telephone number, and the public identifier 2 is assigned a SIP-URI. Further, the plurality of public identifiers can be used as, for example, alias addresses (aliases) for the same service type.

  A PAN profile (corresponding to the control logic of the present invention) that is information necessary for managing the PAN 9 is managed in association with the public identifier for the PAN. The PAN profile includes communication terminal information 1 to 3 of the communication terminal # 1, the communication terminal # 2, and the communication terminal # 3 in addition to the same service profile that indicates the attributes, types, conditions, and the like of services that can be used as the PAN 9. In addition, a session establishment condition table indicating the contents and types of sessions that can be processed and used by each communication terminal is managed.

  The public identifier for PAN and the PAN profile associated therewith are different from the subscriber information of the communication terminal in which the USIM card is mounted, and does not have a private identifier, that is, unique identification information of the USIM card. Therefore, in the subscriber information database 4c, the information on the PAN 9 can be managed independently of the USIM card and the subscriber information of the communication terminal, or one of the communication terminals constituting the PAN 9, for example, It can also be managed in association with the private identifier of communication terminal # 1. In any case, even when PAN 9 is configured, the public identifier and service profile of communication terminal # 1 before configuring PAN 9 are not affected. Therefore, the PAN profile is referred to for a call connection request and a session connection request specifying a public identifier for PAN, and for a connection request specifying a public identifier of communication terminal # 1, communication terminal # is used as usual. One service profile is referenced.

  In addition, since the communication terminal # 1 is the only one in which the USIM card 10 is mounted in the PAN 9, these pieces of information are the home domain of the USIM card 10 (the movement provided by the subscribed communication carrier). It is managed by the subscriber information management means 4b installed in the communication network.

  FIG. 3 is a diagram for explaining an example of a communication procedure in which a session is divided and established with a plurality of communication terminals to which the present invention is applied. In this example, description will be made based on the system configuration shown in FIG. 1, but communication terminals # 1 and # 2 constituting the PAN 9 will be described as communication terminals A and B, and the other communication terminal # 4 will be described as communication terminal C. To do.

  First, the communication terminal C specifies a public identifier for PAN and transmits a session request to a user who owns a communication terminal group constituting the PAN 9 (S1). When the session control means 4a of the communication control device 4 receives a session establishment request designating PAN 9, the session control means 4a refers to the PAN profile managed in association with the PAN public identifier, and one or a plurality of PAN profiles in the PAN are managed. The calling method is determined such as which one is selected and specified as the communication terminal. Here, when a plurality of communication terminals are selected from the communication terminal group constituting the PAN 9 and it is decided to divide the session so that the sessions are individually connected to the respective communication terminals, the session control unit 4 a On the other hand, a response message instructing to transmit the request again is returned to each of the selected plurality of communication terminals (S2).

  In S2, when the request for the first session from the communication terminal C is divided into a session with the communication terminal A and a session with the communication terminal B, the instruction information included in this response is a communication terminal group constituting the PAN 9 Among the public identifiers, which are information for specifying the communication terminals A and B connecting the respective sessions as connection destinations, and what type and attribute sessions are assigned to the respective communication terminals, And information (corresponding to the called terminal list of the present invention) indicating how the first session type and attribute are divided into two. Further, in order to give the caller a degree of freedom of session allocation, the session type, media type, codec type, etc. that can be received by each of the communication terminal A and the communication terminal B, in addition to each communication terminal May include information indicating the priority of the session type, media type, codec type, and the like desired to be received.

  Next, when receiving a response message instructing retransmission of the request, the communication terminal C transmits the confirmation message to the session control means 4a (S3). The communication terminal C recognizes from the information instructing retransmission of the request included in the received response message that the divided session should be connected to the communication terminal A and the communication terminal B, and the communication terminal A and the communication terminal B When a public identifier and a desired type and attribute of each session are recognized, a session establishment request message is transmitted to each communication terminal (S4, S5).

  Next, the session control means 4a receives the request to each of the communication terminal A and the communication terminal B, and transfers the request to each communication terminal (S6, S7). The communication terminal A that has received the request rings a ringing bell that informs that there is an incoming call (S8), and the session control means 4a returns a ringing ring that informs the communication terminal C that it is ringing (S9). ). Similarly, the communication terminal B that has received the request rings a call bell that informs that there is an incoming call (S10), and the session control means 4a performs a bell ring to notify the communication terminal C that the call is being performed. Return (S11). When the user responds to the request for the communication terminal A, the communication terminal A returns a response message to the communication terminal C (S12, S13). Next, the communication terminal C responds to the response message from the communication terminal C to the communication terminal A. When the confirmation message is transmitted (S14, S15), a session is established between the communication terminal A and the communication terminal C.

  On the other hand, when the user responds to the request for the communication terminal B, the communication terminal B returns a response message to the communication terminal C (S16, S17). Next, the communication terminal C responds to the response message from the communication terminal C. When a confirmation message is transmitted to B (S18, S19), a session is established between communication terminal B and communication terminal C.

  In this way, sessions are established between the communication terminal C and the communication terminal A, and between the communication terminal C and the communication terminal B, respectively. Each session is based on information indicating that the communication terminal C receives a re-request received from the session control means 4a, and the first session establishment request specifying the public identifier of the PAN 9 is the communication terminal C. A and the communication terminal B are established by being divided into two sessions with the respective communication terminals. By using these sessions together, the application service requested in the initial session establishment request is Provided between users.

  FIG. 4 is a diagram for explaining another example of a communication procedure for dividing and establishing a session with a plurality of communication terminals to which the present invention is applied. In this example, description will be made based on the system configuration shown in FIG. 1, but communication terminals # 1 and # 2 constituting the PAN 9 will be described as communication terminals A and B, and the other communication terminal # 4 will be described as communication terminal C. To do.

  First, the communication terminal C specifies a public identifier for PAN and transmits a session request to a user who owns a communication terminal group constituting the PAN 9 (S21). When the session control means 4a receives a session establishment request designating PAN 9, the session control means 4a refers to the PAN profile managed in association with the PAN public identifier, and calls the PAN 9 in the same manner as in the above-described example. Make a decision. Here, when a plurality of communication terminals are selected from the communication terminal group constituting the PAN 9 and it is decided to divide the session so that the sessions are individually connected to the respective communication terminals, the session control unit 4a includes the communication terminals A, Generate a session establishment request to B. Then, a session establishment request to the communication terminal A and the communication terminal B is transmitted to each communication terminal (S22, S23).

  The session control means 4a manages state information indicating the state of the processing procedure for establishing a session with each of the communication terminal A and the communication terminal B. The requests in S22 and S23 arrive at each communication terminal. When the communication terminal A receives a session establishment request from the session control means 4a, it transmits a bell ringing to the session control means 4a (S24), and the session control means 4a notifies the communication terminal C that it is calling. Is returned (S25). Similarly, when receiving a session establishment request from the session control unit 4a, the communication terminal B transmits a bell ringing to the session control unit 4a (S26), and the session control unit 4a indicates that the calling is in progress. A bell ringing for notifying is returned (S27).

  Here, the session control means 4a may transmit both the bell ring message from the communication terminal A and the bell ring message from the communication terminal B to the communication terminal C, and a response message described later. Similarly to the above, after receiving both of these bell ring messages, only one bell ring message may be transmitted to the communication terminal C. FIG. 4 shows an example in which two bell ring messages corresponding to both the bell ring messages, which are the former, are transmitted. In this case, the session control means 4a sends the two bell ring messages to the communication terminal C by the session control means 4a. You can explicitly notify that a session has been split.

  Next, when the user responds to the request to the communication terminal A, the communication terminal A transmits a response message to the session control means 4a (S28). The session control means 4a waits until it determines that the response message has been received from both the communication terminal A and the communication terminal B with reference to the state information indicating the session establishment processing procedure. When the user responds to the request for the communication terminal B, the communication terminal B transmits a response message to the session control means 4a (S29).

  Next, when the response message is received from both the communication terminal A and the communication terminal B, the session control means 4a generates a response message for the request specifying the PAN 9 from the communication terminal C and transmits it to the communication terminal C (S30). ). Next, when receiving confirmation from the communication terminal C (S31), the session control means 4a generates confirmation messages for the communication terminals A and B and transmits the confirmation messages to the respective communication terminals (S32). , S33). When the communication terminal A and the communication terminal B each receive the confirmation message, the session from the communication terminal C is divided into sessions between the communication terminal A and the communication terminal B and is established.

  Here, the application data transmitted on the session with the communication terminal C is divided into application data transmitted in the session with the communication terminal A and the session with the communication terminal B (data transmitted in the reverse direction). When the session is terminated or relayed once when the session with the communication terminal C is divided, the session control means 4a determines that these sessions are media. The gateway 4d is controlled to relay, and the media gateway 4d is controlled and instructed to perform necessary division / multiplex processing.

  According to the example of the procedure shown here, the communication terminal C, as a session established with the PAN 9, without being aware of which communication terminal that configures the PAN 9 and what session is established, Communication can be performed using a session.

  In the embodiment described with reference to FIGS. 3 and 4, one session is divided into sessions with a plurality of communication terminals constituting the PAN 9, selection of communication terminals at that time, types of each session, attributes, etc. The case where the session control means 4a performs the determination and determination of allocation and the like has been described. However, the application server 1 can also be configured to perform advanced processing related to the contents of these sessions. In this case, the session control means 4a realizes basic processing and control functions such as session establishment and division, and is transmitted over the session such as the type and attribute of the session, the type and attribute of the media or codec, and the like. The application server 1 executes processing related to application data.

  In other words, when the session control unit 4a receives a session establishment request from the communication terminal C, the session attributes, types, and the like requested by the request are set as the capabilities, attributes, and the like of the communication terminals constituting the connection destination PAN 9. Is notified to the application server 1. The application server 1 acquires subscriber information related to the PAN 9 from the subscriber information management unit 4b, and divides the session based on the information from the session control unit 4a and the information from the subscriber information management unit 4b. Determination, selection of a communication terminal, the type and attribute of a session to be assigned to the communication terminal, and the necessity of relaying in the media gateway 4d are determined, determined, and instructed to the session control means 4a. The session control means 4a refers to this instruction and executes procedures such as session division and session establishment. By adopting such a configuration, it is possible to provide a flexible and highly flexible configuration that can deal with new or advanced services by simply providing the application server 1 without changing the session control means 4a in the future.

  FIG. 5 is a diagram for explaining another example of a communication procedure for dividing and establishing a session with a plurality of communication terminals to which the present invention is applied. In this example, description will be made based on the system configuration shown in FIG. 1, but communication terminals # 1 and # 2 constituting the PAN 9 will be described as communication terminals A and B, and the other communication terminal # 4 will be described as communication terminal C. To do.

  First, the communication terminal C specifies a public identifier for PAN and transmits a session request to a user who owns a communication terminal group constituting the PAN 9 (S41). When the session control means 4a receives a session establishment request designating PAN 9, the session control means 4a refers to the PAN profile managed in association with the PAN public identifier, and calls the PAN 9 in the same manner as in the above-described example. Make a decision. Here, when one communication terminal (here, communication terminal A) is selected from the communication terminal group constituting the PAN 9, the session control means 4a transfers a session establishment request to the communication terminal A (S42).

  Next, when receiving a session establishment request from the session control unit 4a, the communication terminal A transmits a bell ringing message to the session control unit 4a (S43). The session control means 4a transfers the bell ringing message from the communication terminal A to the communication terminal C (S44). When a user responds to a session establishment request for communication terminal A, communication terminal A selects a plurality of communication terminals from a group of communication terminals constituting PAN 9 and individually connects a session with each communication terminal. If it is determined that the session is to be divided, a response instructing the communication terminal C to transmit the request again to each of the plurality of selected communication terminals is transmitted to the communication terminal C (S45, S46). ).

  When the request for the first session from the communication terminal C is divided into sessions between the communication terminal A and the communication terminal B, the instruction information included in this response is the respective sessions in the communication terminal group constituting the PAN. A public identifier, which is information for specifying the communication terminal A and the communication terminal B as connection destinations, and what type and attribute session is assigned to each communication terminal, that is, the type of the first session, And information indicating how to divide the attribute into two. In addition, in order to provide the caller side communication terminal C with the degree of freedom of assignment and attribute assignment to each divided session, the type and attribute assigned to each session are not specified. Indicates the session type, media type, codec type, etc. that can be received by each of the communication terminals A and B, and the priority of the session type, media type, codec type, etc. that are desired to be received by each communication terminal. Information may be included.

  In addition, in order to generate information instructing retransmission of the request included in the response message from the communication terminal A, the communication terminal B and the communication terminal A are used in advance by using communication means between the communication terminals constituting the PAN 9. Communication terminal A includes a request re-transmission instruction information after negotiating by exchanging information between them, dividing the session, and determining the assignment of the type and attribute assigned to each session. A response message can also be sent.

  Next, when the communication terminal C receives the response message instructing retransmission of the request, the communication terminal C transmits the confirmation message to the communication terminal A (S47, S48). The communication terminal C recognizes from the information instructing retransmission of the request included in the received response message that a session divided between the communication terminal A and the communication terminal B should be established, and the communication terminal A and the communication terminal B When a public identifier, a desirable type and attribute of each session are recognized, a session establishment request is transmitted to each communication terminal (S49, S50).

  Next, the session control means 4a receives the request to each of the communication terminal A and the communication terminal B, and transfers the request to each communication terminal (S51, S52). When receiving a request from the communication terminal C, the communication terminal A transmits a bell ringing to the communication terminal C (S53, S54). When the communication terminal B receives a request from the communication terminal C, the communication terminal B transmits the bell ringing to the communication terminal C. Transmit to C (S55, S56). When the user responds to the request for communication terminal A, communication terminal A returns a response message to communication terminal C (S57, S58), and a confirmation message is sent from communication terminal C to communication terminal A in response to this response message. When transmitted (S59, S60), a session is established between communication terminal A and communication terminal C.

  On the other hand, when the user responds to the request for the communication terminal B, the communication terminal B returns a response message to the communication terminal C (S61, S62) and confirms the response message from the communication terminal C to the communication terminal B. When the message is transmitted (S63, S64), a session is established between the communication terminal B and the communication terminal C.

  Through such a communication procedure, a session is established between each of the communication terminal C and the communication terminal A, and between the communication terminal C and the communication terminal B. Each session is based on information instructing the re-request received from the communication terminal A by the communication terminal C, and the session establishment request transmitted first with the public identifier of the PAN 9 is transmitted with the communication terminal A. The communication terminal B is established by being divided into two sessions with each communication terminal, and by using these sessions together, the application service requested by the first session establishment request is transferred between each user. Provided in.

  Also, in this example, a case has been described in which a request for specifying PAN 9 is transmitted from the communication terminal C, and the session control means 4a selects the communication terminal (communication terminal A in the above example) as the transfer destination of the request. Even when a request for designating the communication terminal A is transmitted from the communication terminal C, the session can be divided. In this case, the session control unit 4a does not need to perform the process of selecting the communication terminal A from the communication terminal group constituting the PAN 9, and can transfer the request to the communication terminal A specified as the connection destination in the request. It will be good. This is because the session control means 4a is not involved in the process of dividing the session, and therefore the session can be divided only by control between the communication terminals.

  FIG. 6 is a diagram for explaining another example of a communication procedure for dividing and establishing a session with a plurality of communication terminals to which the present invention is applied. In this example, description will be made based on the system configuration shown in FIG. 1, but communication terminals # 1 and # 2 constituting the PAN 9 will be described as communication terminals A and B, and the other communication terminal # 4 will be described as communication terminal C. To do.

  First, the communication terminal C specifies a public identifier for PAN and transmits a session request to a user who owns a communication terminal group constituting the PAN 9 (S71). When the session control unit 4a receives a request for establishing a session specifying PAN 9, the session control unit 4a refers to the PAN profile managed in association with the public identifier for PAN, and calls the PAN in the same manner as in the above example. Make a decision. Here, when one communication terminal (here, communication terminal A) is selected from the communication terminal group constituting the PAN 9, a session establishment request is transferred to the communication terminal A (S72). Upon receiving the session establishment request, the communication terminal A transmits a bell ringing message to the session control means 4a (S73). The session control means 4a transfers the bell ringing message to the communication terminal C (S74).

  Next, when the user responds to a request for session establishment with respect to the communication terminal A, the communication terminal A connects a session separately to a communication terminal other than the communication terminal A in the communication terminal group constituting the PAN 9. The communication terminal C is determined to divide the session, and a response instructing the communication terminal C to transmit the request again to another communication terminal is transmitted to the communication terminal C (S75, S76). When the request for the first session from the communication terminal C is divided into a session with the communication terminal A and a session with the communication terminal B, which is another communication terminal, the instruction information included in this response is In addition to the session, the public identifier, which is information for identifying the communication terminal B to which the session is connected as the connection destination, what type and attribute of the communication terminal A responds to the session, which communication terminal B Information indicating whether to assign a session of such type and attribute. In addition, in order to provide the caller side communication terminal C with the degree of freedom of assignment and attribute assignment to each divided session, the type and attribute assigned to each session are not specified. Indicates the session type, media type, codec type, etc. that can be received by each of the communication terminals A and B, and the priority of the session type, media type, codec type, etc. that are desired to be received by each communication terminal. Information may be included.

  In addition, in order to generate information instructing retransmission of the request included in the response message from the communication terminal A, the communication terminal B and the communication terminal A are used in advance by using communication means between the communication terminals constituting the PAN 9. Communication terminal A includes a request re-transmission instruction information after negotiating by exchanging information between them, dividing the session, and determining the assignment of the type and attribute assigned to each session. A response message can also be sent.

  Next, when the communication terminal C receives the response message instructing retransmission of the request, the communication terminal C should establish a divided session to the communication terminal B from the information instructing retransmission of the request included in the received response message. Is recognized, the public identifier of the communication terminal B, and the desired type and attribute of each session are recognized, a session establishment request for the communication terminal B is generated, and the request message is transmitted to the communication terminal B (S77). .

  Next, the session control means 4a receives the request to the communication terminal B and transfers the request to the communication terminal B (S78). When receiving a request from the communication terminal C, the communication terminal B transmits a bell ringing to the communication terminal C (S79, S80). When communication terminal C transmits a confirmation message to communication terminal A in response to a response message from communication terminal A (S81, S82), a session is established between communication terminal A and communication terminal C.

  When the user responds to the request for the communication terminal B, the communication terminal B transmits a response message to the communication terminal C (S83, S84). In response to the response message from the communication terminal B, the communication terminal C transmits a confirmation message to the communication terminal B (S85, S86), and a session is established between the communication terminal B and the communication terminal C.

  Through such a communication procedure, a session is established between each of the communication terminal C and the communication terminal A, and between the communication terminal C and the communication terminal B. Each session is based on information instructing the re-request received from the communication terminal A by the communication terminal C, and the session establishment request transmitted first with the public identifier of the PAN 9 is transmitted with the communication terminal A. The communication terminal B is established by being divided into two sessions with each communication terminal, and by using these sessions together, the application service requested by the first session establishment request is transferred between each user. Provided in.

  In the communication terminal C, the order of the confirmation message to the communication terminal A and the transmission of the request to the communication terminal B is not limited, and the order shown in FIG. 6 may be reversed.

  Also, in this example, a case has been described in which a request for specifying PAN 9 is transmitted from the communication terminal C, and the session control means 4a selects the communication terminal (communication terminal A in the above example) as the transfer destination of the request. Even when a request for designating the communication terminal A is transmitted from the communication terminal C, the session can be divided. In this case, the session control unit 4a does not need to perform the process of selecting the communication terminal A from the communication terminal group constituting the PAN 9, and can transfer the request to the communication terminal A specified as the connection destination in the request. It will be good. This is because the session control means 4a is not involved in the process of dividing the session, and therefore the session can be divided only by control between the communication terminals.

  In each of the embodiments described above, an example in which a session is divided into two sessions with two communication terminals has been described. However, even when a session is divided into three or more communication terminals. The same applies.

  In each embodiment, the session control unit is described as one block. However, each communication terminal and the session control unit may be connected via a plurality of session control units (for example, SIP proxy). In this case, the session control for the PAN and the communication terminals constituting the PAN is performed by a session control unit that manages the domain to which the PAN is connected.

  As described above, according to the present invention, in a mobile communication network, a session establishment request specifying a PAN is divided and established for each session with a plurality of communication terminals constituting the PAN. It is possible to improve the degree of freedom of the user in the communication service using PAN.

  In addition, when dividing a session, the user can designate a communication terminal and designate the division of the session, and the degree of freedom of the user can be improved when receiving a communication service as a PAN.

  Moreover, by managing the communication control device, the processing load and mounting load on the communication terminal are reduced, and the need to add a new message to the SIP is eliminated.

  In addition, in order to reduce the calculation complexity of the accounting, or because the processing of the session control means can be clearly separated into the processing for the calling side and the processing for the called side, Therefore, it is considered not to exchange messages such that the calling side and the called side change. That is, the request message is always transmitted from the calling side or the media server. Further, the session control means for managing the called party can divide the session, determine the calling method to the communication terminal in the PAN, and the like.

  In addition, since the calling communication terminal is requested to divide the session in response to the session establishment request specifying the PAN, the calling communication terminal is ready to divide the application data. It becomes possible to transmit a request for establishing each divided session again.

  In addition, since a response message includes information necessary for session division processing for a session establishment request designating a PAN, the time until session establishment can be shortened.

  In addition, when a session is divided in response to a session establishment request specifying PAN, the communication control device relays application data transmitted in the session, so that the calling communication terminal determines whether the session is divided. This makes it possible to establish a session without special awareness.

  Also, in response to a session establishment request designating a PAN, a session with a communication terminal group constituting the PAN is relayed by a media gateway, whereby the calling communication terminal and the media gateway, and the communication terminal group and the media gateway constituting the PAN It is possible to establish sessions separately between the two.

  In addition, after confirming that all communication terminals have responded to the divided session establishment request, it becomes possible to return responses to the calling communication terminal, and to send a message for session establishment. It is possible to reduce communication.

  In addition, the communication control apparatus holds information on a communication terminal that should send a confirmation message in response to a response to a session establishment request, and transmits a confirmation message to all the communication terminals based on the information. There is no need for special control such as copying and transferring one confirmation message to all relevant communication terminals in the PAN.

  Further, when the session is divided, it can be realized only by end-to-end control between communication terminals, and a special communication control device is not required.

  In addition, since the information necessary for the process of dividing the session is gathered in the response message for the session establishment request, the time until the session is established can be shortened.

It is a figure which shows the example of schematic structure of the mobile communication network system which is one Embodiment of this invention. It is a figure which shows the schematic structural example of the subscriber information containing the information for managing PAN in this invention. It is a figure for demonstrating an example of the communication procedure which divides | segments and establishes a session with several communication terminals to which this invention is applied. It is a figure for demonstrating the other example of the communication procedure which divides | segments and establishes a session with several communication terminals to which this invention is applied. It is a figure for demonstrating the other example of the communication procedure which divides | segments and establishes a session with several communication terminals to which this invention is applied. It is a figure for demonstrating the other example of the communication procedure which divides | segments and establishes a session with several communication terminals to which this invention is applied. It is a block diagram showing a schematic configuration of a system including subscriber information management, call control / session control in a conventional mobile communication network. It is a figure which shows the outline of the subscriber information managed by HSS etc. in the conventional mobile communication network. It is a figure for demonstrating the procedure at the time of requesting establishment of a session with respect to the communication terminal in PAN from the other party communication terminal. It is a figure for demonstrating the procedure at the time of selecting a specific communication terminal and establishing a session, when a session control apparatus receives the session establishment to PAN. It is a figure for demonstrating the procedure at the time of transferring a request simultaneously to each of the communication terminal group which comprises PAN, when a session control apparatus receives the session establishment to PAN.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,101 ... Application server (AS), 2 ... Mobile communication network, 3,104 ... Core network, 4 ... Communication control apparatus, 4a ... Session control means, 4b ... Subscriber information management means, 4c ... Subscriber information database, 4d ... Media gateway, 5, 6, 7, 106 ... Wireless access network, 8 ... Wireless section, 9 ... PAN, 10, 110 ... USIM card, 100 ... Multimedia communication control subsystem, 102 ... Session controller (CSCF) , 103 ... subscriber information management device (HSS), 105 ... location management server (VLR / HLR), 107 ... base station, 108 ... base station control device, 109 ... communication terminal.

Claims (10)

A communication control device for controlling connection between communication terminals in a mobile communication network,
Means for managing one or a plurality of public identification information for specifying a group configured by a communication terminal connectable to the mobile communication network together with other communication terminals; and the group from a partner communication terminal used by a communication partner A plurality of means for accepting a call connection request or session connection request specifying public identification information for identifying a group, means for managing control logic for the group, and a plurality of communication terminals constituting the group from the control logic And a reconnection request to the partner communication terminal for establishing the call connection request or session connection request by dividing the call connection request or session connection request into a call connection or session connection with each of the selected plurality of communication terminals. And a communication control device.   The communication control apparatus according to claim 1, wherein the reconnection request includes public identification information of the selected plurality of communication terminals and session allocation information for the selected plurality of communication terminals. . A communication terminal connected to a mobile communication network and capable of call connection or session connection with another communication terminal,
The communication terminal includes means for transmitting a call connection request or a session connection request to the group constituted by a plurality of said other communication terminal, receiving a response corresponding to the call connection request or a session connection request the transmission For establishing the call connection request or the session connection request by dividing the call connection request or the session connection request into a call connection or a session connection with each of the plurality of other communication terminals based on the instruction information included in the response. A communication terminal that transmits a call connection request or a session connection request again to each of the plurality of other communication terminals. Instruction information included in the response to claim 3, characterized in that it comprises a public identification information of the plurality of other communication terminals constituting the group, and a session assignment information for the plurality of other communication terminals The communication terminal described. A communication terminal connected to a mobile communication network and capable of call connection or session connection with another communication terminal,
The communication terminal constitutes a group with other communication terminals, said means for receiving a call connection request or a session connection request from phase hand communication terminal, a response corresponding to the call connection request or a session connection request thus received and means for transmitting to the other communication terminal, the response order is established by dividing the call connection request or a session connection request to the call connection or session connection with each of the plurality of communication terminals constituting the group The communication terminal further includes public identification information of the plurality of communication terminals and session allocation information for the plurality of communication terminals. A communication control method of a communication control device for controlling connection between communication terminals in a mobile communication network,
The communication terminal that can be connected to the mobile communication network manages one or a plurality of public identification information for specifying a group that is configured with other communication terminals, and the communication terminal used by the communication partner uses the communication terminal. Receiving a call connection request or session connection request designating public identification information for specifying a group; selecting any one of communication terminals constituting the group from control logic for the group; and Sending a reconnection request to the counterpart communication terminal in order to divide and establish a session connection request into a call connection or a session connection with each of the selected plurality of communication terminals. A communication control method. The communication control method according to claim 6 , wherein the reconnection request includes public identification information of the selected plurality of communication terminals and session allocation information for the selected plurality of communication terminals. . A communication control method for a communication terminal connected to a mobile communication network and capable of call connection or session connection with another communication terminal,
Transmitting a call connection request or a session connection request to the group constituted by a plurality of said other communication terminals, comprising the steps of receiving a response corresponding to the call connection request or a session connection request the transmission, the In order to divide and establish the call connection request or session connection request into call connection or session connection with each of the plurality of other communication terminals based on instruction information included in the response, the plurality of other communication terminals Transmitting a call connection request or a session connection request to each of them again . Instruction information included in the response, the public identification information of the plurality of other communication terminals constituting the group, to claim 8, characterized in that it comprises a session allocation information for the plurality of other communication terminals The communication control method described. Connected to a mobile communication network, a call connection or a session connection possible communication terminal of the communication control method with other communication terminals,
Wherein the step of said communication terminal to form a group with other communication terminals, to receive the phase hand communication terminal or we call connection request or a session connection request, a response corresponding to the call connection request or a session connection request thus received partner And transmitting the call connection request or session connection request to each of a plurality of communication terminals constituting the group and establishing the call connection or session connection. A communication control method comprising public identification information of the plurality of communication terminals and session allocation information for the plurality of communication terminals .

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