Method for managing power save mode in wireless LAN system, and device for supporting same

摘要

Provided is a method for operating a power save mode performed by an access point in a WLAN system. The method includes: transmitting, by an access point (AP), a first traffic indication map (TIM) broadcast indication frame to a first station (STA); transmitting, by the AP, a second TIM broadcast indication frame to a second STA; transmitting, by the AP, a first TIM frame indicating that buffered traffic to the first STA is present; and transmitting, by the AP, a second TIM frame indicating that buffered traffic to the second STA is present. The first TIM broadcast indication frame includes a first TIM offset field indicating a transmission time of the first TIM frame, and the second TIM broadcast indication frame includes a second TIM offset field indicating a transmission time of the second TIM frame.

主权项

1. A method for operating a power save mode in a wireless local area network (WLAN) system, comprising:
transmitting, by an access point (AP), a beacon frame to a first STA and a second STA; transmitting, by the (AP), a first traffic indication map (TIM) broadcast indication frame to a first station (STA) in a beacon frame interval; transmitting, by the AP, a second TIM broadcast indication frame to a second STA in the beacon frame interval; transmitting, by the AP, a first TIM frame indicating buffered traffic for the first STA presenting the beacon frame interval; and transmitting, by the AP, a second TIM frame indicating buffered traffic for the second STA in the beacon frame interval, wherein the first TIM broadcast indication frame includes a first TIM offset field indicating a transmission time of the first TIM frame, wherein the second TIM broadcast indication frame includes a second TIM offset field indicating a second transmission time of the second TIM frame, and wherein the first STA and the second STA are assigned with the same association identifier (AID) when the STAs are associated with the AP.