| 摘要 |
PURPOSE: To provide a transmission method between a fixed base station and a mobile station for not confusing the operation of the mobile station by transmitting the radio signals of an inverted spectrum from the base station to a repeater station. CONSTITUTION: The base stations 13 and 23 connected to a telephone exchange station 1 transmit the radio signals of the inverted spectrum through an antenna 7 to the repeater stations 14 and 24. The repeater station 14 moves the frequency of the oscillator 28 of a first channel 11 for retransmitting the radio signals received from the base station 13 to the mobile station 6 from the frequency channel of communication to the repeater station 14 to the different frequency channel of the same frequency band allocated to the communication to the mobile station 6. In such a manner, the radio signals transmitted from the base stations 13 and 23 to the repeater stations 14 and 24 by spectrum inversion are not interpreted by the mobile station 6 and a radio link established between the base stations 13 and 23 and the repeater stations 14 and 24 is evaded from being interpreted as the radio signals for the mobile station 6. |
