Patent ID: 7050839

Claim:
A mobile communication terminal which alternately sets a wake-up period and sleep period in a standby state and which receives a radio signal transmitted from a base station in the wake-up period by a receiver, the mobile communication terminal comprising: a path search processor configured to detect a path of the radio signal transmitted from a first base station on standby in the wake-up period; a path search determinater configured to determine whether or not the path from the first base station has been detected by the path search processor; a cell search section configured to detect the path of the radio signal transmitted from the first base station and a path of a radio signal transmitted from a second base station neighboring the first base station in response to a determination result of the path search determinater, if the path is not detected by the path search processor; an error detector configured to detect an error of a reception frequency based on a reception signal of the detected path in response to the determination result of the determinater, if the path is detected by the first searcher, and to detect the error of the reception frequency based on a reception signal of the path detected by the cell search section, if the path is not detected by the first searcher; and a controller configured to control the reception frequency of the receiver so as to decrease the frequency error detected by the error detector.