Patent ID: 7324784

Claim:
A transmission beam control method for controlling the transmission beam of an adaptive antenna transceiving device that is provided with a plurality of antenna devices; said method comprising: a first step for extracting, from received signals that have been received by said plurality of antenna devices, TPC bits that are used for controlling transmission power, and decoding from said TPC bits increase/decrease instructions indicating instructions for increasing or instructions for decreasing said transmission power; a second step for monitoring changes in said increase/decrease instructions in prescribed time intervals that have been set in advance and determining whether or not said increase/decrease instructions are biased toward instructions for increasing said transmission power; a third step for, when said increase/decrease instructions are biased toward instructions for increasing said transmission power, changing a peak direction of said transmission beam from a prescribed directivity that is formed based on the directivity during reception; and a fourth step for repeating said first step to third step until the bias of said increase/decrease instructions toward instructions for increasing said transmission power is eliminated or until the number of times of changing said transmission beam reaches a maximum value that has been set in advance.