Patent attributes
A network device is to function as a station (STA) in a Wireless Local Area Network (WLAN) that acknowledges a downlink (DL) multi-user (MU) physical layer (PHY) Protocol Data Unit (PPDU) transmitted by an access point (AP). The network device includes one or more processors that are configured to cause the network device functioning as the STA to perform operations including decoding a frame from the DL MU PPDU, determining whether an ACK Policy field of the frame is set to a binary value of ‘01’, determining whether trigger information for an uplink (UL) MU transmission has been obtained from the DL MU PPDU, and responsive to a determination that the ACK Policy filed of the frame is set to the binary value of ‘01’ and the trigger information has been obtained from the DL MU PPDU, transmitting a trigger-based immediate acknowledgement frame to the AP.
