Patent ID: 7409222

Claim:
A method for adjusting a power of a forward link signal at a base station, comprising: receiving at the base station a first channel quality value from a mobile station, the first channel quality value being based on a forward link reference signal on a supplementary channel received by the mobile station while at least one first power control group of a forward link on a forward link channel is received by the mobile station; estimating a parameter for determining a transmission power of the forward link signal using at least one second channel quality value for at least one second power control group that is in a position in a time axis before a predetermined time from a position of the first power control group that is used for the first channel quality value; comparing the estimated parameter with a target value; and adjusting the transmission power of the second power control group of the forward link signal according to the comparing result by the base station, wherein a transmission power of the supplementary channel for the link reference signal is higher than the transmission power of the forward link signal.