Patent ID: 8971247
Filing Date: 2015-03-03
Classification: H04B,H04L,H04W

Abstract:
1. A method operational at a transmitter device for retransmitting Media Access Control (MAC) protocol data units (MPDUs) in a multi-user multiple-input and multiple-output (MU-MIMO) communication system, comprising: transmitting a plurality of concurrent data streams within a first transmission window, each concurrent data stream including one or more MPDUs and associated with a different recipient, the first transmission window having a first length; obtaining an indication of a retransmission subset of the MPDUs to be retransmitted for each concurrent data stream; and transmitting a plurality of concurrent data streams within a second transmission window, wherein the plurality of concurrent data streams of the second transmission window includes the retransmission subset for each concurrent data stream and wherein a length of the second transmission window is equal to a longest duration of the retransmission subset within a single data stream of the concurrent data streams, even when at least one new MPDU is available for transmission in the single data stream corresponding to the retransmission subset having the longest duration.