JP2008109202A - Mobile communication terminal and control method of mobile communication terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a terminal to easily determine whether the terminal itself is the originator of a session without adding a special function onto a network and without increasing the size of communication data on a transmission line. <P>SOLUTION: A originator flag setting unit 13 sets an originator flag to TRUE when a session ID included in transmission information used to transmit a group communication request does not match a session ID included in a success answer message. An originator decision unit 15 decides whether an originator flag corresponding to a session ID of group communication being participated in is TRUE, and a message transmitting unit 16 becomes ready to transmit an additional request message to a group communication managing server when it is decided that the originator flag is TRUE. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mobile communication terminal and a mobile communication terminal control method.

In recent years, mobile communication terminals such as mobile phones are equipped with a PTT (PushTo Talk) function that employs PoC (Push-to-talk over Cellular) technology, and can communicate with each other within a group formed by a plurality of terminals. (See, for example, Patent Document 1 below). In conventional group communication, it has not been considered to identify an initiator terminal that has established a group communication session and to grant privileges regarding the established session to the initiator terminal. Here, as a method for identifying the originator terminal, the following methods can be considered. As one method, when the group communication management server newly establishes a session based on the group communication request transmitted from the initiator terminal, the session ID of this session and the terminal ID of the initiator terminal are stored in association with each other. There is a way. As another method, there is a method in which the group communication management server stores identification information indicating that the terminal is the initiator terminal in a response message to the group communication request transmitted from the initiator terminal.
JP 2005-217891 A

  By the way, in the above one method, the group communication management server has to store the session ID and the terminal ID of the originator terminal in association with each other, which requires an enormous memory capacity. In the other method, it is necessary to newly add a process for determining whether or not the identification information is stored in the response message to the group communication management server, and on the transmission path by storing the identification information in the response message. The size of the communication data increases.

  Therefore, in order to solve the above-described problem, the present invention is to determine whether the terminal is the initiator of a session without adding a special function on the network and without increasing the size of communication data on the transmission path. It is an object of the present invention to provide a mobile communication terminal capable of easily determining whether or not and a method for controlling the mobile communication terminal.

  The mobile communication terminal of the present invention is a mobile communication terminal that performs communication between multiple terminals in a session started based on a communication request between multiple terminals transmitted from a specific mobile communication terminal, and transmits the communication request between multiple terminals. Transmitting means, a receiving means for receiving a success response message for a communication request between multiple terminals transmitted by the transmitting means, and a session ID included in the success response message received by the receiving means, If the session ID included in the transmission information used when the request is transmitted does not match, the initiator flag indicating whether or not the initiator of the communication between multiple terminals is set to a code indicating the initiator The initiator flag setting means and the initiator flag set by the initiator flag setting means are the initiator In the case of a code indicating that, the originator determination means for determining that the terminal is the originator, and the transmission history that stores the transmission history generated based on the session ID included in the transmission information, the originator flag, and the success response message Storage means.

  The mobile communication terminal control method of the present invention is a method for controlling a mobile communication terminal that performs communication between multiple terminals in a session that is started based on a communication request between multiple terminals that is transmitted from a specific mobile communication terminal. The mobile communication terminal transmits a communication request between multiple terminals, a reception step of receiving a success response message for the communication request between multiple terminals transmitted in the transmission step, and a success response message received in the reception step If the session ID included in the ID does not match the session ID included in the transmission information used when the terminal transmits the inter-terminal communication request, it indicates whether or not it is the initiator of the inter-terminal communication. An initiator flag setting step for setting an initiator flag in a code indicating that the person is an initiator; Included in the caller information step, the caller flag, and the success response message when the caller flag set in the caller flag setting step is a code indicating that the caller is the caller, the caller determination step for determining that the terminal is the caller A transmission history storage step of storing a transmission history generated based on the session ID to be stored.

  According to these inventions, when the session ID included in the transmission information used when the inter-terminal communication request is transmitted and the session ID included in the success response message for the inter-terminal communication request are different, The originator flag of the own terminal can be set to a code indicating that it is the originator. If this originator flag is a code indicating that it is the originator, it can be determined that the own terminal is the originator. . Therefore, it is possible to easily determine whether the terminal is the originator of the session without adding a special function on the network and without increasing the size of communication data on the transmission path.

  In the mobile communication terminal of the present invention, the originator determination means uses the outgoing call history stored in the outgoing call history storage means to send an inter-terminal communication request and responds to the success response corresponding to the inter-multi-terminal communication request. If the session ID included in the message matches the session ID included in the outgoing call history and the initiator flag included in the outgoing call history is a code indicating that it is the initiator, it is determined that the terminal is the initiator. To do.

  In this way, when a communication request between a plurality of terminals is transmitted using the transmission history, the session ID included in the transmission history matches the session ID included in the success response message for the communication request between the plurality of terminals. Furthermore, when the originator flag included in the transmission history is a code indicating that the originator is the originator, it is possible to determine that the terminal is the originator.

  In the mobile communication terminal of the present invention, the originator determination means uses the outgoing call history stored in the outgoing call history storage means to send an inter-terminal communication request and responds to the success response corresponding to the inter-multi-terminal communication request. When the session ID included in the message matches the session ID included in the outgoing call history and the code indicating that the initiator flag included in the outgoing call history is not the initiator, it is determined that the terminal is not the initiator To do.

  In this way, when a communication request between a plurality of terminals is transmitted using the transmission history, the session ID included in the transmission history matches the session ID included in the success response message for the communication request between the plurality of terminals. In addition, when the initiator flag included in the outgoing call history is a code indicating that it is not the initiator, it is possible to determine that the terminal is not the initiator.

  In the mobile communication terminal of the present invention, the mobile communication terminal further comprises an incoming history storage means for storing an incoming history made up of incoming information received when the terminal is requested to participate in the communication between the terminals, and the originator flag setting means A communication request between a plurality of terminals is transmitted using the reception history stored by the storage means, and the session ID included in the success response message corresponding to the communication request between the plurality of terminals is a session ID included in the reception history. If they match, the initiator flag is set to a code indicating that it is not the initiator, and the initiator determination means is a code indicating that the initiator flag set by the initiator flag setting means is not the initiator. It is determined that the terminal is not the originator. At this time, a transmission history generated based on the transmission information, the originator flag, and the session ID included in the success response message is stored.

  In this way, when a communication request between multiple terminals is transmitted using the incoming call history, the session ID included in the incoming call history matches the session ID included in the success response message for the communication request between multiple terminals. In this case, the originator flag of the terminal can be set to a code indicating that it is not the originator, and if the originator flag is a code indicating that it is not the originator, it is determined that the terminal is not the originator Can be made.

  In the mobile communication terminal of the present invention, when the initiator determination unit determines that the terminal is the initiator, the other terminal that has not yet participated in the communication between the terminals is added to the communication between the terminals. It is preferable to further include a transmission unit capable of transmitting an additional request message to be requested. In this way, only the initiator terminal can transmit the addition request message.

  According to the mobile communication terminal and the mobile communication terminal control method according to the present invention, the terminal starts the session without adding a special function on the network and without increasing the size of communication data on the transmission path. It is possible to easily determine whether or not.

  Embodiments of a mobile communication terminal and a mobile communication terminal control method according to the present invention will be described below with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same element and the overlapping description is abbreviate | omitted.

  FIG. 1 is a diagram illustrating a configuration of a communication system in the embodiment. As shown in FIG. 1, the communication system includes mobile phones 1 to 3 and a group communication management server 9. The cellular phones 1 to 3 and the group communication management server 9 are connected via a mobile communication network. The mobile phones 1 to 3 all have the same functional configuration and hardware configuration. Accordingly, only the cellular phone 1 will be described below when it is not necessary to distinguish the cellular phones 1 to 3 in particular.

  The mobile phone 1 is a mobile communication terminal that performs wireless communication with a base station (not shown) that covers a wireless area in which the mobile phone is located and receives a call service or a packet communication service. In addition, the mobile phone 1 is equipped with a PTT function, and can perform group communication (communication between a plurality of terminals) between a plurality of terminals.

  In the communication system according to the present embodiment, the mobile phone 1 is described as a specific example of the mobile communication terminal. However, the specific example of the mobile communication terminal is not limited to this, for example, a simple mobile phone (PHS). Or a mobile communication terminal such as a portable information terminal (PDA) having a communication function.

  FIG. 2 is a functional configuration diagram of the mobile phone 1. As shown in FIG. 2, the cellular phone 1 functionally includes a request transmission unit 11 (transmission unit), a message reception unit 12 (reception unit), an initiator flag setting unit 13 (an initiator flag setting unit), The transmission history storage unit 14 (transmission history storage unit), the originator determination unit 15 (starter determination unit), the message transmission unit 16 (transmission unit), and the incoming call history storage unit 17 (incoming history storage unit).

  FIG. 3 is a hardware configuration diagram of the mobile phone 1. As shown in FIG. 3, the cellular phone 1 is physically configured as a computer system including a CPU 101, a memory 102, a wireless communication device 103, an input device 104, a display device 105, and the like. By installing, the function of each functional element shown in FIG. 2 is realized. The memory 102 of the mobile phone 1 stores a call history table that stores a call history of the mobile phone 1 and a call history table that stores a call history of the mobile phone 1. Here, the data structure of the outgoing call history table will be described with reference to FIG. The transmission history table includes, for example, a transmission destination number, a session ID, and an originator flag as data items. In the transmission destination number, an ID (telephone number) for uniquely identifying the mobile phone of the transmission destination is stored. When making a normal call, only the phone number of one mobile phone is stored, and when making a group communication call, the phone numbers of a plurality of mobile phones constituting the group are stored. The session ID stores an ID for uniquely identifying the group. The originator flag stores a code indicating whether or not the person is the originator. The incoming call history table includes, for example, a transmission source number and a session ID as data items. The transmission source number stores an ID (telephone number) for uniquely identifying the mobile phone of the transmission source. When a normal call is received, only the phone number of one mobile phone is stored, and when a group communication is received, the phone number of the mobile phone that is the originator and the phone numbers of a plurality of other mobile phones constituting the group are stored. The session ID stores an ID for uniquely identifying the group.

  Hereinafter, each functional element will be described in detail with reference to FIG.

  The request transmission unit 11 transmits a group communication request for establishing a group communication session. The group communication request includes a member identification number and a session ID. The member identification number stores, for example, the telephone numbers of one or more mobile phones that are members of group communication, and the session ID stores, for example, an ID that uniquely identifies an established session.

  A group communication request can be made when a new member is selected and sent, when any incoming call history is selected from a plurality of group communication incoming calls, and from a plurality of group communication outgoing calls. There is a case where the outgoing call history is selected and the outgoing call is made. When a member is newly selected and transmitted, the member identification number of the selected member and the session ID in which an initial value is set are temporarily stored in the memory as transmission information. When any incoming call history is selected and sent, the member identification number and session ID included in the incoming call history are used as outgoing information and are temporarily stored in the memory. When any outgoing call history is selected and sent, the member identification number and session ID included in the outgoing call history are used as outgoing information and are temporarily stored in the memory.

  The message receiver 12 receives a success response message for the group communication request transmitted by the request transmitter 11. This success response message includes the session ID of the session established by the group communication request.

  When the initiator flag setting unit 13 does not match the session ID included in the transmission information used when the own device transmits the group communication request, the session ID included in the success response message received by the message receiving unit 12 Is set to TRUE in an initiator flag indicating whether or not the own device is an initiator of group communication.

  In addition, the initiator flag setting unit 13 matches the session ID included in the successful response message received by the message receiving unit 12 with the session ID included in the incoming call history used when the own device originated the group communication request. In this case, FALSE is set in the initiator flag indicating whether or not the own device is the initiator of the group communication.

  The code set in the initiator flag is not limited to TRUE / FALSE. For example, it may be a code that can distinguish whether it is the initiator, such as ON / OFF or “1” / “0”. That's fine.

  The transmission history storage unit 14 generates a transmission history based on the transmission information used when the group communication request is transmitted, the originator flag, and the session ID included in the success response message received by the message reception unit 12. The generated outgoing call history is stored in the outgoing call history table.

  The initiator determination unit 15 determines whether or not the own device is the initiator of the group communication based on the initiator flag corresponding to the session ID of the group communication currently participating. That is, when the initiator flag corresponding to the session ID is TRUE, the initiator determination unit 15 determines that the own apparatus is the initiator of the group communication, and when the initiator flag corresponding to the session ID is FALSE. It is determined that the own device is not the originator of group communication.

  Further, the initiator determination unit 15 transmits a group communication request using the transmission history stored in the transmission history table, and the session ID included in the success response message corresponding to the group communication request is included in the transmission history. When it matches with the included session ID, it is determined whether or not the own device is the originator of the group communication based on the originator flag of the outgoing call history. That is, when the origination flag of the outgoing call history is TRUE, the originator determination unit 15 determines that the own machine is the originator of the group communication, and when the originator flag of the outgoing call history is FALSE, It is determined that it is not the originator of group communication.

  When the initiator determination unit 15 determines that the own device is the initiator of the group communication, the message transmission unit 16 sends an addition request message for requesting to add a mobile phone not participating in the group communication to the group communication. The group communication management server 9 can be transmitted. On the other hand, when the initiator determination unit 15 determines that the message transmission unit 16 is not the initiator of the group communication, the message transmission unit 16 cannot transmit the addition request message to the group communication management server 9. .

  The incoming call history storage unit 17 generates an incoming call history based on the incoming call information received when the initiator terminal requests participation in group communication, and stores the generated incoming call history in the incoming call history table.

  Next, with reference to FIGS. 5 to 10, an operation when the initiator flag is set in the mobile phone will be described. FIG. 5 shows an operation when a new member is selected and a group communication request is sent. FIGS. 6 and 7 show an operation when any incoming call history is selected and a group communication request is sent. FIG. 8 to FIG. 10 are operations when a group communication request is transmitted with any transmission history selected.

  First, with reference to FIG. 5, an operation when a member is newly selected and a group communication request is transmitted will be described.

  The request transmission unit 11 of the mobile phone 1 transmits a group communication request to the mobile phones 2 and 3 (step S1). This group communication request includes a member ID number (phone number of the mobile phone 2 or 3) of a member to be subjected to group communication and a session ID in which an initial value is stored. The request transmission unit 11 temporarily stores transmission information on the memory including the telephone numbers of the mobile phones 2 and 3 that are member identification numbers and the session ID in which the initial values are stored.

  Next, when the group communication management server 9 receives the group communication request transmitted from the mobile phone 1 (step S2), the group communication management server 9 establishes a session corresponding to the group communication request and generates a session ID (step S3). ).

  Next, the group communication management server 9 transmits a success response message for the group communication request transmitted from the mobile phone 1 to the mobile phone 1 (step S4). This successful response message includes the generated session ID. At the same time, the mobile phones 2 and 3 receive a call (step S9), and the mobile phones 2 and 3 responding to the call generate an incoming call history (step S10), and the generated incoming call history is stored in the incoming call history table. Stored. The call information includes a member identification number and a generated session ID. These member identification numbers and session IDs are stored as the incoming call history.

  On the other hand, the message receiver 12 of the mobile phone 1 receives the success response message transmitted from the group communication management server 9 (step S4).

  Next, the initiator flag setting unit 13 of the mobile phone 1 reads the session ID from the success response message, and the read session ID is included in the transmission information temporarily stored in the memory, and an initial value is set. If it is determined that the current session ID does not match (step S5), TRUE is set in the initiator flag (step S6). That is, after confirming that the read session ID is a newly generated session ID, TRUE is set in the initiator flag.

  Next, the transmission history storage unit 14 of the mobile phone 1 generates a transmission history based on the transmission information temporarily stored in the memory when the group communication request is transmitted and the initiator flag in which TRUE is set. (Step S7), and the generated transmission history is stored in the transmission history table.

  Thereafter, while participating in the group communication, the initiator determination unit 15 of the mobile phone 1 determines that the own apparatus is the initiator of the group communication because the initiator flag corresponding to the session ID of the group communication is TRUE. Determination is made (step S8).

  Next, referring to FIG. 6, when any incoming call history is selected and a group communication request is sent, and the group communication session corresponding to the selected incoming call history has already ended. Will be described.

  The request transmission unit 11 of the mobile phone 1 transmits a group communication request to the mobile phones 2 and 3 (step S11). This group communication request includes the member identification number (phone numbers of the mobile phones 2 and 3) and the session ID included in the selected incoming call history.

  Next, when the group communication management server 9 receives the group communication request transmitted from the mobile phone 1 (step S12), it confirms that the session has already ended using the session ID included in this group communication request. (Step S13). The group communication management server 9 establishes a session corresponding to this group communication request, and newly generates a session ID (step S14).

  Next, the group communication management server 9 transmits a success response message for the group communication request transmitted from the mobile phone 1 to the mobile phone 1 (step S15). This success response message includes the newly generated session ID. At the same time, the cellular phones 2 and 3 receive a call (step S1A), and the cellular phones 2 and 3 responding to the call generate an incoming call history (step S1B). The generated incoming call history is stored in the incoming call history table. Stored. The call information includes a member identification number and a newly generated session ID. These member identification numbers and session IDs are stored as the incoming call history.

  On the other hand, the message receiving unit 12 of the mobile phone 1 receives the success response message transmitted from the group communication management server 9 (step S15).

  Next, the initiator flag setting unit 13 of the mobile phone 1 reads the session ID from the success response message, and the read session ID does not match the session ID included in the incoming call history used when the group communication request is transmitted. If it is determined that there is (step S16), TRUE is set in the initiator flag (step S17). That is, after confirming that both session IDs do not match, TRUE is set in the initiator flag.

  Next, the outgoing call history storage unit 14 of the mobile phone 1 includes the phone numbers of the mobile phones 2 and 3 included in the incoming call history used when sending the group communication request, the session ID read from the success response message, and TRUE. A call history is generated on the basis of the originator flag to which is set (step S18), and the generated call history is stored in the call history table.

  Thereafter, while participating in the group communication, the initiator determination unit 15 of the mobile phone 1 determines that the own apparatus is the initiator of the group communication because the initiator flag corresponding to the session ID of the group communication is TRUE. Determination is made (step S19).

  Next, with reference to FIG. 7, when any incoming call history is selected and a group communication request is sent, and a group communication session corresponding to the selected incoming call history continues. The operation will be described.

  The request transmission unit 11 of the mobile phone 1 transmits a group communication request to the mobile phones 2 and 3 (step S21). This group communication request includes the member identification number (phone numbers of the mobile phones 2 and 3) and the session ID included in the selected incoming call history.

  Next, when the group communication management server 9 receives the group communication request transmitted from the mobile phone 1 (step S22), it confirms that the session is continued using the session ID included in the group communication request. (Step S23).

  Next, the group communication management server 9 transmits a success response message for the group communication request transmitted from the mobile phone 1 to the mobile phone 1 (step S24). This success response message includes the session ID included in the group communication request.

  On the other hand, the message receiver 12 of the mobile phone 1 receives the success response message transmitted from the group communication management server 9 (step S24).

  Next, the initiator flag setting unit 13 of the mobile phone 1 reads the session ID from the success response message, and if the read session ID matches the session ID included in the incoming call history used when sending the group communication request. If it is determined (step S25), FALSE is set in the initiator flag (step S26). That is, after confirming that both session IDs match, FALSE is set in the initiator flag.

  Next, the outgoing call history storage unit 14 of the mobile phone 1 includes the phone numbers of the mobile phones 2 and 3 included in the incoming call history used when sending the group communication request, the session ID read from the success response message, and FALSE. A call history is generated on the basis of the originator flag to which is set (step S27), and the generated call history is stored in the call history table.

  Thereafter, while participating in this group communication, the initiator determination unit 15 of the mobile phone 1 is not the initiator of the group communication because the initiator flag corresponding to the session ID of this group communication is FALSE. Determination is made (step S28).

  Next, referring to FIG. 8, when any outgoing call history is selected and a group communication request is sent, and the group communication session corresponding to the selected outgoing call history has already ended. Will be described.

  The request transmission unit 11 of the mobile phone 1 transmits a group communication request to the mobile phones 2 and 3 (step S31). This group communication request includes the member identification number (phone numbers of the mobile phones 2 and 3) and the session ID included in the selected outgoing call history.

  Next, when the group communication management server 9 receives the group communication request transmitted from the mobile phone 1 (step S32), it confirms that the session has already ended using the session ID included in the group communication request. (Step S33). The group communication management server 9 establishes a session corresponding to this group communication request, and newly generates a session ID (step S34).

  Next, the group communication management server 9 transmits a success response message for the group communication request transmitted from the mobile phone 1 to the mobile phone 1 (step S35). This success response message includes the newly generated session ID. At the same time, the mobile phones 2 and 3 receive a call (step S3A), and the mobile phone 2 and 3 responding to the call generates an incoming call history (step S3B), and the generated incoming call history is stored in the incoming call history table. Stored. The call information includes a member identification number and a newly generated session ID. These member identification numbers and session IDs are stored as the incoming call history.

  On the other hand, the message receiving unit 12 of the mobile phone 1 receives the success response message transmitted from the group communication management server 9 (step S35).

  Next, the initiator flag setting unit 13 of the mobile phone 1 reads the session ID from the success response message, and the read session ID does not match the session ID included in the transmission history used when the group communication request is transmitted. If it is determined that there is (step S36), TRUE is set in the initiator flag (step S37). That is, after confirming that both session IDs do not match, TRUE is set in the initiator flag.

  Next, the call history storage unit 14 of the mobile phone 1 includes the phone numbers of the mobile phones 2 and 3 included in the call history used when sending the group communication request, the session ID read from the success response message, and TRUE. A call history is generated on the basis of the originator flag to which is set (step S38), and the generated call history is stored in the call history table.

  Thereafter, while participating in the group communication, the initiator determination unit 15 of the mobile phone 1 determines that the own apparatus is the initiator of the group communication because the initiator flag corresponding to the session ID of the group communication is TRUE. Determination is made (step S39).

  In addition, in step S38 mentioned above, the outgoing call history is newly generated, but it is not limited to newly generating the outgoing call history. For example, it is good also as updating the content of the transmission log | history used when transmitting a group communication request by step S31.

  Next, referring to FIG. 9, when any outgoing call history is selected and a group communication request is sent, a group communication session corresponding to the selected outgoing call history is continued. The operation when the originator of group communication is the mobile phone 1 will be described.

  The request transmission unit 11 of the mobile phone 1 transmits a group communication request to the mobile phones 2 and 3 (step S41). This group communication request includes the member identification number (phone numbers of the mobile phones 2 and 3) and the session ID included in the selected outgoing call history.

  Next, when the group communication management server 9 receives the group communication request transmitted from the mobile phone 1 (step S42), it confirms that the session is continued using the session ID included in the group communication request. (Step S43).

  Next, the group communication management server 9 transmits a success response message for the group communication request transmitted from the mobile phone 1 to the mobile phone 1 (step S44). This success response message includes the session ID included in the group communication request.

  On the other hand, the message receiving unit 12 of the mobile phone 1 receives the success response message transmitted from the group communication management server 9 (step S44).

  Next, the initiator determination unit 15 of the mobile phone 1 reads the session ID from the success response message, and determines that the read session ID matches the session ID included in the transmission history used when the group communication request is transmitted. If it is (step S45), it is confirmed whether or not the initiator flag included in the outgoing call history is TRUE. Then, when the initiator determination unit 15 confirms that the initiator flag is TRUE (step S46), the initiator determination unit 15 determines that the own apparatus is the initiator of group communication (step S47).

  Next, referring to FIG. 10, when any outgoing call history is selected and a group communication request is sent, a group communication session corresponding to the selected outgoing call history is continued. The operation when the originator of group communication is other than the cellular phone 1 will be described.

  The request transmission unit 11 of the mobile phone 1 transmits a group communication request to the mobile phones 2 and 3 (step S51). This group communication request includes the member identification number (phone numbers of the mobile phones 2 and 3) and the session ID included in the selected outgoing call history.

  Next, when the group communication management server 9 receives the group communication request transmitted from the mobile phone 1 (step S52), it confirms that the session is continued using the session ID included in the group communication request. (Step S53). This success response message includes the session ID included in the group communication request.

  Next, the group communication management server 9 transmits a success response to the group communication request transmitted from the mobile phone 1 to the mobile phone 1 (step S54).

  On the other hand, the message receiving unit 12 of the mobile phone 1 receives the success response message transmitted from the group communication management server 9 (step S54).

  Next, the initiator determination unit 15 of the mobile phone 1 reads the session ID from the success response message, and determines that the read session ID matches the session ID included in the transmission history used when the group communication request is transmitted. If it is (step S55), it is confirmed whether or not the initiator flag included in the outgoing call history is FALSE. Then, when the initiator determination unit 15 confirms that the initiator flag is FALSE (step S56), the initiator determination unit 15 determines that the own apparatus is not the initiator of group communication (step S57).

  Next, with reference to FIG. 11, the contents of the privilege given to the mobile phone according to the contents of the initiator flag will be described.

  First, the initiator determination unit 15 of the mobile phone 1 determines whether or not the own device is the initiator of group communication based on the initiator flag corresponding to the session ID of the currently participating group communication (step S61). . When this determination is YES (step S61; YES), the message transmission unit 16 of the mobile phone 1 sends an addition request message for requesting to add a mobile phone that has not participated in group communication to the group communication. It is possible to transmit to the management server 9 (step S62). On the other hand, when the determination in step S61 is NO (step S61; NO), the message transmission unit 16 of the mobile phone 1 is in a state where it is impossible to transmit the addition request message to the group communication management server 9 ( Step S63). The addition request message includes the telephone number of the mobile phone to be newly joined and the session ID during group communication. The group communication management server 9 that has received this addition request message calls a mobile phone to be newly joined. This call information includes a member identification number (phone numbers of the mobile phones 1, 2, and 3) and a session ID during group communication. These member identification numbers and session IDs are stored as incoming call histories in newly participating mobile phones.

  As described above, according to the mobile phone in the present embodiment, the session ID included in the transmission information used when the group communication request is transmitted is different from the session ID included in the success response message for the group communication request. In this case, the originator flag of the own device can be set to TRUE. Further, when the initiator flag is TRUE, an addition request message can be transmitted to the group communication management server 9.

It is a figure which illustrates the system configuration | structure of the communication system in embodiment of invention. It is a figure which illustrates the function structure of the mobile telephone shown in FIG. It is a figure which illustrates the hardware constitutions of the mobile telephone shown in FIG. It is a figure which illustrates the data structure of a transmission log | history table. It is a sequence diagram for demonstrating the operation | movement at the time of setting an initiator flag. It is a sequence diagram for demonstrating the operation | movement at the time of setting an initiator flag. It is a sequence diagram for demonstrating the operation | movement at the time of setting an initiator flag. It is a sequence diagram for demonstrating the operation | movement at the time of setting an initiator flag. It is a sequence diagram for demonstrating the operation | movement at the time of setting an initiator flag. It is a sequence diagram for demonstrating the operation | movement at the time of setting an initiator flag. It is a flowchart for demonstrating participation permission processing.

Explanation of symbols

  1, 2, 3 ... mobile phone, 9 ... group communication management server, 11 ... request sending unit, 12 ... message receiving unit, 13 ... originator flag setting unit, 14 ... outgoing call History storage unit, 15 ... initiator determination unit, 16 ... message transmission unit, 17 ... incoming call history storage unit.

Claims (6)

A mobile communication terminal that performs communication between multiple terminals in a session started based on a communication request between multiple terminals transmitted from a specific mobile communication terminal,
A transmitting means for transmitting the inter-terminal communication request;
Receiving means for receiving a success response message for the inter-terminal communication request transmitted by the transmitting means;
When the session ID included in the success response message received by the receiving unit does not match the session ID included in the transmission information used when the terminal transmits the inter-terminal communication request, An initiator flag setting means for setting an initiator flag indicating whether or not an initiator of communication between a plurality of terminals into a code indicating an initiator;
An initiator determination means for determining that the terminal is the initiator when the initiator flag set by the initiator flag setting means is a code indicating that the person is an initiator;
Transmission history storage means for storing a transmission history generated based on a session ID included in the transmission information, the originator flag and the success response message;
A mobile communication terminal comprising:   The originator determining means uses the outgoing call history stored in the outgoing call history storage means to transmit the inter-terminal communication request and is included in the success response message corresponding to the inter-multi-terminal communication request. If the session ID matches the session ID included in the outgoing call history and the originator flag included in the outgoing call history is a code indicating that it is the originator, it is determined that the terminal is the originator. The mobile communication terminal according to claim 1.   The originator determining means uses the outgoing call history stored in the outgoing call history storage means to transmit the inter-terminal communication request and is included in the success response message corresponding to the inter-multi-terminal communication request. When the session ID matches the session ID included in the outgoing call history and the code indicating that the originator flag contained in the outgoing call history is not the originator, it is determined that the terminal is not the originator The mobile communication terminal according to claim 1. An incoming call history storage means for storing an incoming call history consisting of incoming call information received when the terminal is requested to participate in the communication between the plurality of terminals;
The originator flag setting means uses the incoming call history stored in the incoming call history storage means to transmit the inter-terminal communication request, and is included in the success response message corresponding to the inter-multi-terminal communication request. If the session ID matches the session ID included in the incoming call history, the originator flag is set to a code indicating that it is not the originator,
2. The originator determination means, when the originator flag set by the originator flag setting means is a code indicating that the originator is not an originator, determines that the terminal is not the originator. Mobile communication terminal.   When the originator determining means determines that the terminal is the originator, an additional request message is transmitted to request that another terminal that has not yet participated in the inter-multi-terminal communication be added to the inter-multi-terminal communication. The mobile communication terminal according to any one of claims 1 to 4, further comprising a transmission unit that can perform the transmission. A method of controlling a mobile communication terminal that performs communication between multiple terminals in a session that is started based on a communication request between multiple terminals that is transmitted from a specific mobile communication terminal,
The mobile communication terminal is
An outgoing step of sending the inter-terminal communication request;
A receiving step of receiving a success response message for the inter-terminal communication request transmitted in the transmitting step;
When the session ID included in the success response message received in the receiving step does not match the session ID included in the transmission information used when the terminal transmits the inter-terminal communication request, An initiator flag setting step for setting an initiator flag indicating whether or not an initiator of communication between a plurality of terminals to a code indicating an initiator;
An initiator determination step for determining that the own terminal is the initiator when the initiator flag set in the initiator flag setting step is a code indicating that the initiator is;
A transmission history storage step for storing a transmission history generated based on a session ID included in the transmission information, the originator flag and the success response message;
A method for controlling a mobile communication terminal, comprising:

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