| 摘要 |
PURPOSE:To realize a narrow frequency band (a few radio channel number) communication system by adopting the constitution such that a radio signal is utilized for the registration of position of a mobile set and the incoming call and communication are carried out through a stationary set. CONSTITUTION:The communication system consists of a mobile set 1, a stationary set 4 and an exchange 8 and the stationary set 4 and the exchange 8 are interconnected by a signal line 9. The mobile set 1 is provided with an ID generating section 2 and an ID transmission section 3, the stationary set 4 is provided with an ID reception section 5, an ID storage collation section 6 which stores the received ID tentatively, collates it with an ID received succeedingly and generates an ID registration requiring signal C and an ID delete requiring signal D when any change takes place in the ID, and a transmission section 7 sending the requiring signals C, D. Upon the receipt of an ID signal sent from the mobile set 1 for a prescribed period, the stationary set 4 collates the signal with the ID stored already and sends revision information to the exchange 8 when a change takes place in the ID registered in the stationary set 4. Thus, when an incoming call reaches the mobile set 1, the exchange 8 connects the incoming call to the stationary set 4 belonging to the moving destination of the mobile set 1. |
