Patent ID: 6885647

Claim:
In a base station of a Code Division Multiple Access (CDMA) mobile communication system capable of compensating a route delay factor on a communication route between a base station and a mobile station such as on a relay unit, a base station for compensating a route delay factor fixed between a base station and a mobile station of a CDMA mobile communication system, comprising: a clock signal generation unit for receiving a 10 MHZ, Time Of Day (TOD) and 1 Pulse Per Second (PPS) signal from a Global Positioning System (GPS) receiving unit and generating a 1st even second clock signal in synchronization with the 1 PPS and a 2nd even second clock signal which is obtained by delaying the 1st even second clock signal by a maximum bidirectional propagation delay time between a base station and a relay unit; a first signal processing unit for receiving the 1st even second clock signal from the clock signal generation unit and modulating a forward link channel from the base station to a mobile station in synchronization with the 1st even second clock signal; and a second signal processing unit for receiving the 2nd even second clock signal from the clock signal generation unit and demodulating a backward link channel from the mobile station to the base station in synchronization with the 2nd even second clock signal.