FIELD: communication.
SUBSTANCE: invention relates to wireless communication system, and more specifically to method and apparatus for channel access via null data packet frame in wireless LAN system. Method for channel access from station (STA) in wireless communication system according to one embodiment of the present invention comprises steps of: receiving, from access point (AP), configuration information for one or more slots for channel access; receiving first frame, from AP, from particular slot from among one or more slots; and starting channel access after receiving first frame, wherein first frame can be null data packet (NDP) frame.
EFFECT: technical result consists in minimizing power consumption.
10 cl, 25 dwg
