Patent ID: 7599319

Claim:
A radio base station installed in a radio communications system which includes a radio network controller and a radio communications device, said radio base station comprising: transmission/reception means for communicating with said radio network controller; radio transceiver means for communicating with said radio communications device to receive a first communication channel and a second communication channel from said radio communications device; and control means for detecting a reception quality of the first communication channel, conducting an inner-loop power control for controlling transmission power of the first communication channel from said radio communications device based on the reception quality and an inner-loop power control target value, and adding a power control offset to the inner-loop power control target value before said radio transceiver means starts a communication through the second communication channel, wherein said control means conducts an outer-loop power control for adjusting the inner-loop power control target value between said radio base station and said radio network controller through said radio transceiver means, interrupts the outer-loop power control after the power control offset is added to the inner-loop power control target value, and resumes the outer-loop power control from start of a communication through the second communication channel onward after the outer-loop power control was interrupted.