A channel assignment system.

摘要

In a mobile communication system between a mobile station (5) and a telephone network through a base station (4) which assigns a communication channel so that it satisfies required communication quality or D/U ratio, said base station (4) comprises a moving speed detector (22) for measuring moving speed of the mobile station, and a D/U ratio generator (22A) responsive of output of said moving speed detector (22) for providing said required communication quality. The required communication quality depends upon the moving speed of a mobile station, and a communication channel is selected to be the minimum quality channel as far as it satisfies said required communication quality. Thus, the communication quality is always higher than the requested threshold quality level, and the effective reuse of frequencies is improved.