| 摘要 |
PURPOSE:To eliminate interference due to a disturbing wave by obtaining a reception level ratio between a reception level of a communication channel and a reception level of a control channel at a mobile station and allowing a base station making communication to convert the communication channel frequency when the ratio is less than a prescribed value. CONSTITUTION:A channel control section 42 receives a reception level of a desired wave f1 from a communication level detection section 40 and receives a reception level of control channel frequencies fb, fc of an interference base station from an interference level detection section 43. Then a ratio D/U is obtained from each of the frequencies, where D is a reception level of a desired wave and U is a reception level of disturbing waves and whether or not the reception level ratio D/U is less than a predetermined reference value is discriminated. When the D/U is less than the reference level, a request signal revising the communication channel frequency f1 of a desired base station 11 into other frequency is sent so as to revise the frequency of the desired wave into a frequency different from those of the disturbing waves. Thus, the interference due to the disturbing wave is prevented with simple constitution. |
