Patent ID: 6675021
Filing Date: 2004-01-06
Classification: H04B,H04W

Abstract:
A transmission power control method in a radio communications system for communication between a base station and a mobile station, said method comprising:said base station detecting a received power of a signal transmitted by said mobile station and transmitting, to said mobile station, a transmission power control instruction signal for controlling the transmission power of said mobile station, along with a transmission signal, at regular periods; said method mobile station monitoring the transmission power control instruction signal transmitted by said base station and decreasing the current rate of modification in the transmission power when the currently received transmission power control instruction signal is different in content from a predetermined number of transmission power control instruction signals received prior to the currently received transmission control instruction signal and when the number of transmission power control instruction signals used to set the current rate of modification in the transmission power is equal to or smaller than another predetermined number; and said mobile station controlling the transmission power of a signal to be transmitted based on the transmission power control instruction signal transmitted by said base station and the changed rate of modification in the transmission power.