| 摘要 |
PURPOSE:To watch generation of disturbing wave at all times without interrupting service and improve the capacity of the system by making each base station stop transmission of control signals periodically and simultaneously and detecting the disturbing wave during the while. CONSTITUTION:Control signals of the same radio frequency are simultaneously transmitted from plural base stations 2, 3 having respective radio zone 10 by control of a circuit control station 1 of a mobile radio communication system. The control signals are received by a control channel receiving station 4 and presence or absence of disturbing wave is detected. The result of detection is transferred to the control station 1 by a fixed circuit 9. Control signals are inputted by repeaters 12 of base stations 2, 3, and output of the repeaters 12 is applied to an output gate 13 of the signals. The control signals are processed by a synchronism detector 15 and a bit counter 16, and the gate 13 is controlled by the output. Transmission of control signals is stopped by base stations 2, 3 periodically and simultaneously, and disturbing wave is detected during the while. Thus, disturbing wave is watched at all times without interrupting service. |
