Patent ID: 6487191
Filing Date: 2002-11-26
Classification: H04W

Abstract:
A power control method for forward links in a CDMA cellular mobile communication system, comprising the steps of:comparing the combined signal-to-noise ratio of a forward traffic channel received from base station during conversation by a mobile station under soft handoff with a target value for power control; requesting decreasing the transmit power of the forward traffic channel as much as a fixed amount to all base stations engaged in current handoff when the combined signal-to-noise ratio is larger than the target value; requesting increasing the transmit power of the forward traffic channel as much as a fixed amount only for the base station whose receiving pilot signal-to-noise ratio measured from pilot channel that transmitted from each base station is the largest and requesting decreasing the transmit power of the forward traffic channel as much as fixed amount for other base stations, when the combined signal-to-noise ratio is smaller than the target value, so that it may be possible to divide the transmit power request information for each base station.