Patent ID: 8045514

Claim:
A Wireless Local Area Network (WLAN) comprising: at least one station; and an Access Point (AP) configured to recognize frame transmission state information of a station based on a frame received from the station and to broadcast the frame transmission state information to each station, wherein the at least one station is configured to recognize wireless medium sensing information of other stations from frames sensed over a wireless network, to generate mechanism determination information based on the frame transmission state information received from the AP and the wireless medium sensing information, and to perform a mechanism based on the mechanism determination information before transmitting a frame to the AP or to directly occupy the wireless medium to transmit the frame to the AP without performing the mechanism upon there being a frame to be transmitted to the AP, wherein the AP comprises: a state manager configured to create a state table, the state table comprising frame transmission state information of each station obtained by comparing frame reception time information to a first time, and address information; and a message processor configured to broadcast the frame transmission state information and the address information of each station included in the state table to each station.