METHOD AND APPARATUS FOR ACCESSING CHANNEL IN WLAN SYSTEM

摘要

The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for accessing a channel in a WLAN system. A method for synchronizing channels from a station (STA) in the wireless communication system, according to one embodiment of the present invention, comprises the steps of: receiving from an access point (AP) setting information with respect to an least one slot allowing channel access by the STA; receiving a synchronization frame from the AP from a slot boundary of the at least one slot; and synchronizing the channels on the basis of the synchronization frame, wherein the synchronization frame may be a null data packet (NDP) frame.

主权项

1. A method for performing channel synchronization by a station (STA) of a wireless communication system, the method comprising:
receiving configuration information regarding at least one slot in which channel access of the station (STA) is allowed, from an access point (AP); receiving a synchronization frame from the access point (AP) at a slot boundary of the at least one slot; performing the channel synchronization on the basis of the synchronization frame, wherein the synchronization frame is a null data packet (NDP) frame, and initializing channel access without performing clear channel assessment (CCA) when the received synchronization frame includes an identification of the AP, wherein the synchronization frame is received from the AP when the wireless medium (WM) is idle at the slot boundary of the at least one slot.