RADIO SIGNAL TRANSMISSION METHOD FOR MOBILE COMMUNICATION AND ITS SYSTEM

摘要

PROBLEM TO BE SOLVED: To conduct frequency conversion of a multiplexed frequency in the radio signal transmission method of a digital mobile communication system and its system. SOLUTION: A base station side equipment detects automatically a radio control signal sent from a base station equipment 5 and generates a highly accurate reference signal to make a transmission frequency of an oscillator stable based on the radio control signal by a generator 15. Based on the reference signal, plural radio signals are generated as frequency multiplex signals by a generator 18 and plural radio signals are decoded from the frequency multiplex signals by a decoder 21. In a corresponding equipment, plural radio signals are generated as frequency multiplex signals by a generator 18 and plural radio signals are decoded from the frequency multiplex signals by a decoder 21. Since the standard signal used for applying frequency conversion to the plural radio signals is generated from the radio control signal sent from the base station equipment in this way. The standard signal with high accuracy requiring to apply frequency conversion to the radio signal is generated without the use of an expensive standard signal generator.