RADIO SYSTEM

PROBLEM TO BE SOLVED: To provide a radio system for correcting a failure even when mismatch of position registration information occurs between a control station and a terminal station. SOLUTION: The control station 10 notifies terminal stations 31-1, ... of position registration transmitting intervals and registers position registration signals from the terminal stations to be transmitted in the transmitting intervals to allow communication. The control station 10 notifies, when the position registration transmitting intervals are changed, the terminal stations 31-1, ... of the changed information, and when the position registration signals from the terminal stations are not received in the position registration transmitting intervals whose changes are notified, deletes registration information of the terminal stations. The terminal stations 31-1determine that the mismatch of the position registration information occurs and spontaneously retransmit the position registration signals to the control station 10 when the call is performed to the control station 10 and refused. The control station 10 performs position registration by the position registration signals retransmitted from the terminal stations to allow the communication of the terminal stations. COPYRIGHT: (C)2011,JPO&INPIT