A method and an apparatus for Dynamic Station Enablement (DSE) procedure in a wireless local area network system are disclosed. For a method of enabling a dependent station to operate within a white space as an unlicensed device by an enabling station, the method comprises: transmitting, from the enabling station to the dependent station, an enabling signal to permit the dependent station to operate within a TV white space; transmitting, from the enabling station to the dependent station, a white space map element which indicates an available channel list in the TV white space such that the dependent station operates only within the available channels identified by the white space map element, wherein the white space map element is transmitted via one of a beacon frame, a probe response frame and a white space map announcement frame; and exchanging a DSE (dynamic station enablement) related message between the enabling station and the dependent station on one or more of the available channels identified by the white space map element.