Patent ID: 7336751
Filing Date: 2008-02-26
Classification: H04W

Abstract:
1. A power control circuit comprising: a synchronism detecting unit for detecting, every frame, whether a radio data is synchronized or in an out of synchronized state; a synchronism/asynchronism judging unit for judging system synchronism when a predetermined first times of the synchronized state are continuously detected by the synchronism detecting unit, and for judging system asynchronism when a predetermined second times of the out of synchronized state are continuously detected by the synchronism detecting unit; an execution/unexecution judging unit for judging execution of transmission power control of a transmission radio signal when a predetermined third times of the synchronized state are continuously detected by the synchronism detecting unit, which third times are independent from the first times and the second times, and for judging unexecution of the transmission power control when the third times of the synchronized state are not continuously detected; a transmission power control information extracting unit for extracting transmission power control information contained in the radio data; and a selection unit for selecting execution of the transmission power control as to rise or drop according to the transmission power control information extracted in the transmission power control information extracting unit when the execution/unexecution judging unit judges the execution, and for selecting unexecution of the transmission power control and keeping the transmission power constant when the execution/unexecution judging unit judges the unexecution.