Apparatus and method of dynamic frequency selection in wireless lan system

The present invention relates to a dynamic channel selection in a wireless LAN system, since the previous channel measurement at the time to be made a channel change, so change the channel without allocating a separate channel measurement times in the case to be made the channel change throughput (throughput ) it can contribute to improve it proposes a dynamic channel selection apparatus and method for ensuring QoS. The WLAN system, dynamic channel selection, an access point (Access Point), the station (Station)