Method and apparatus for flexible transmission slot allocation in wireless lan system

Disclosed are a method and apparatus for flexible transmission slot allocation in a wireless LAN system. The method for the flexible transmission slot allocation of an AP in the wireless LAN system according to one embodiment of the present invention includes the steps of: transmitting a beacon including a traffic identification map bit to a station; receiving a power save poll from the station in a slot which is implicitly allocated by the traffic indication map bit; and transmitting ACK including transmission slot allocation information of downlink data to the station. [Reference numerals] (101,103) Beacon; (AA) Dot line : slot boundary; (BB) DL : downlink transmission