| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a mobile station, a mobile communication system and a program suited to implement group communication automatically finished when such conditions keep up for a predetermined time that all mobile stations do not acquire right of speaking, as typified by PTT communication, which can follow a line for a long time without interruption and without imposing a burden on a user. <P>SOLUTION: A control unit of the mobile station clocks the duration time of the conditions, where all mobile stations constituting group communication are estimated not to acquire right of speaking in the course of the group communication which is automatically interrupted, when the conditions that the all mobile stations do not acquire right of speaking keep up for a predetermined time. When a difference is 0 between threshold duration time and the duration time of the conditions that all the mobile stations constituting the group communication are estimated not to acquire right of speaking, the mobile station is made to transmit a requirement of acquisition of right of speaking to a server. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
