TRANSMISSION POWER CONTROL APPARATUS AND METHOD IN A MOBILE COMMUNICATION SYSTEM

摘要

A transmission power control method is provided for controlling transmission power of a communication device based on predetermined information supplied from another communication device. The communication device performs radio transmission and reception with the other communication device and transmitted transmission power control information that is to be used in a transmission power control operation in the other communication device and is determined based on reception signal quality. The method comprises the steps of determining whether the reception signal quality has become lower than a predetermined quality; and autonomously controlling the transmission power by increasing the transmission power in accordance with predetermined characteristics, regardless of the predetermined information supplied from the other communication device. When the reception signal quality is determined to have become lower than the predetermined quality in the quality determining step, the transmission power being increased from the transmission power value that is observed at the time of the determination.