Patent ID: 6307844
Filing Date: 2001-10-23
Classification: H04W

Abstract:
A transmission power control method for a CDMA communication system, comprising: a base station and a plurality of mobile terminalsperforming communication by CDMA;a plurality of said mobile terminals transmitting over uplink traffic channels to said base station;said base station measuring the reception level of a signal transmitted from each of said plurality of mobile terminals, generating a transmission control signal in accordance with the reception level and a common transmission power control signal containing said transmission power control signals of said plurality of mobile terminals; spreading said common transmission power control signal with a spreader, and transmitting said spread common transmission power control signal through a common channel shared by said mobile terminals;each of said plurality of mobile terminals receiving said common transmission power control signal, deriving a corresponding one of said transmission power control signals from said common transmission power control signal, and controlling the transmission power of a signal to be transmitted to said base station in accordance with said derived transmission power control signal.