Patent ID: 9118473
Filing Date: 2015-08-25
Classification: H04L

Abstract:
1. An apparatus for wireless communications, comprising: a receiver configured to receive first and second multi-user (MU) packets, to receive, after the first MU packet and before the second MU packet, a first frame comprising a sounding poll (SP) packet for the second MU packet and a first block acknowledgement request (BAR) for the first MU packet and a second frame comprising a null data packet announcement (NDPA) and a second BAR for the first MU packet; and a transmitter configured to transmit, in response to the first BAR or the second BAR and before the receiver has received the second MU packet, an acknowledgment associated with the first MU packet together with information about a channel over which the second MU packet is expected to be received, wherein the information is generated in response to reception of the SP packet.