Patent ID: 7107021

Claim:
A method for measuring, by a mobile station, status of a forward channel and transmitting the measured status information to a base station in a mobile communication system supporting selective transmit diversity (STD), the method comprising the steps of: receiving forward channel signals transmitted from the base station through a plurality of transmission antennas; measuring signal strength of each of the received forward channel signals; selecting a transmission antenna having a highest measured signal strength by comparing the measured signal strengths; generating antenna selection information indicating the selected transmission antenna; determining whether to generate forward channel status information being an absolute value of the measured signal strength or a relative value of the measured signal strength; generating the forward channel status information based on the determination; and transmitting the generated forward channel status information to the base station along with the antenna selection information, wherein the absolute value information is transmitted so that the absolute value information does not overlap on a time domain with absolute value information transmitted from other mobile stations to the base station.