Patent ID: 9730217
Date: 2017-08-08
CPC Classifications: H04L,H04W,Y02D

Claim:
1. A method for performing channel access by a station (STA) of a wireless communication system, the method comprising: receiving, from an access point (AP), configuration information regarding at least one slot in which the STA is allowed to perform channel access; and performing channel access after changing from a doze state to an awake state, wherein when the STA changes from the doze state to the awake state at a slot boundary of the at least one slot, channel access starts without performing a Clear Channel Assessment (CCA), wherein an underway Transmission Opportunity (TXOP) is stopped prior to the slot boundary, and wherein when the STA changes from the doze state to the awake state at a time other than the slot boundary of the at least one slot, continuously performing CCA until a frame sequence is received for configuring a network allocation vector (NAV), which is transmitted in a same basic service set (BSS) with the STA.