Patent ID: 7953030

Claim:
A method of controlling power consumption of a station when it receives a wireless local area network signal using a hierarchical structure having a first layer and a second layer, the method comprising: extracting information on frame transmission speed and transmission period information on the first and second layers from the wireless signal; determining a power-controlled period for each of the first and second layers based on the extracted information; reducing the power consumption of the first and second layers by switching an original mode of the first and second layers to a predetermined mode during the power-controlled period if a reception address included in the extracted information is not identical to an address of the station; and maintaining the power consumption of the first and second layers at the original mode only when the reception address included in the extracted information is identical to the address of the station, wherein the first layer is an RF layer and the second layer is a baseband layer, and wherein in the predetermined mode, all the elements of the RF layer except for a PLL (Phase Locked Loop) and a first register are powered down and all the elements of the baseband layer except for a second register are powered down.