Mobile communication system user equipment in mobile communication system, control program thereof and transmission power control method in mobile communication system

摘要

In a W-CDMA wireless system (1), when communication is performed by using a StandAlone-DCCH, adequate transmission power control is performed depending on change in a communication status. In a W-CDMA wireless system (1), a reception quality of a common channel is measured, and if a StandAlone-DCCH state has occurred, transmission power control corresponding to the common channel is performed in which a target SIR is determined depending on the reception quality of the common channel. Therefore, even in the StandAlone-DCCH state in which Blind transport format detection is used, it is possible to set the target SIR in accordance with a reception status of a user equipment (20), enabling the adequate transmission power control depending on the change in the communication status.