Patent ID: 7995509

Claim:
A wireless communication system comprising: a reception unit configured to receive a signal; a header analysis unit configured to receive the received signal to read a parameter showing a format of a digital signal contained in the received signal; a received signal quality measurement unit configured to receive the received signal from the reception unit to measure a quality of the received signal from the reception unit; and an awake/sleep control unit configured to connect to the reception unit, the header analysis unit and the received signal quality measurement unit, and configured to control awake and sleep of at least one of the reception unit, the header analysis unit and the received signal quality measurement unit, the awake/sleep control unit configured to control to sleep an operation of said at least one of the reception unit, the header analysis unit and the received signal quality measurement unit for a period corresponding to a frame length extracted from the parameter read by the header analysis unit when the quality measured by the received signal quality measurement unit is lower than a predetermined threshold.