Method for accessing channels in wireless communication systems and apparatus for same

摘要

The present invention relates to a method for accessing channels in wireless communication systems and to an apparatus for same. More particularly, the method for supporting channel access of a station (STA), which does not belong to a group indicated by a traffic indication map (TIM), includes the steps of: receiving a channel access frame for requesting channel access within a TIM interval from an STA; and transmitting to the STA a response frame including information on whether to allow channel access of the STA in response to the channel access frame, wherein the channel access period of an STA, which belongs to the group, is determined on the basis of a bitmap of the TIM within the TIM interval, and the channel access of the STA is allowed only in a period other than the channel access period of the STA, which belongs to the group.

主权项

1. A method of supporting channel access of an overriding station (STA) which does not belong to a group indicated by a traffic indication map (TIM) in a wireless communication system, the method comprising:
receiving, by an access point (AP), a channel access request frame in a TIM interval from the overriding STA; and transmitting, by the AP, a response frame indicating whether the channel access is allowed to the overriding STA in response to the channel access request frame, wherein the TIM interval includes a group channel access interval corresponding to a bit set to 1 in a TIM bitmap for a group STA that belongs to the group and an overriding channel access interval corresponding to a bit set to 0 in a TIM bitmap for the overriding STA, and wherein the channel access is allowed when an association ID (AID) corresponding to the bit set to 0 exists.