| 摘要 |
PURPOSE:To select and switch a base station line whose received input is high, namely, the best line as necessary even after a call line has been connected, by providing a signal oscillating part on a control station, and providing a signal control part and a switch on a base station. CONSTITUTION:At the time of transmitting and receiving a first signal between a mobile station 1 and each base station 21-2n, after a line has been fixed, switches 101-10n are controlled by signal control parts 91-9n of each base station 21-2n, so that it is prevented that outputs of received input converting parts 41-4n are mixed into a speech path and a calling fault occurs. Subsequently, in the course of a call, a signal is sent out from a signal oscillating part 11 of a control office 6 at every time which has been set arbitrarily in advance, and when this signal is received, the control parts 91-9n of the base stations 21-2n control the switches 101-10n so that the outputs of the converting parts 41-4n can be sent out. Based on this information, a received input comparison control part 7 of the control station 6 switches automatically to the best line by a speech path switching part 8, if there is a line whose received input is higher than a base station line which has been selected in the beginning. Accordingly, even after the base station line has been selected, the best line can be selected and switched at every some fixed time. |
