Patent ID: 9577838
Date: 2017-02-21
CPC Classifications: H04L,H04W

Claim:
1. A method for transmitting multicast data in a wireless local area network (WLAN), the method comprising: transmitting, by an access point (AP) station of the WLAN, a group addressed frame including a multicast address based on a multicast transmission scheme to a plurality of non-AP stations of the WLAN including a first receiving station and a second receiving station; after transmitting the group addressed frame, transmitting, by the AP station of the WLAN, a first block acknowledgement request (BAR) frame based on a unicast transmission scheme to the first receiving station, wherein the first BAR frame is used to request an acknowledgement of the group addressed frame from the first receiving station; receiving, by the AP station of the WLAN, a first block acknowledgement (BA) frame indicating an acknowledgement for the group addressed frame from the first receiving station; after receiving the first BA frame, transmitting, by the AP station of the WLAN, a second BAR frame based on the unicast transmission scheme to the second receiving station, wherein the second BAR frame is used to request an acknowledgement of the group addressed frame from the second receiving station; and receiving, by the AP station of the WLAN, a second BA frame indicating an acknowledgement for the group addressed frame from the second receiving station.