Methods, devices, and systems for efficient retransmission communications

摘要

Methods, devices, and systems for retransmitting Media Access Control (MAC) protocol data units (MPDUs) in a multi-user multiple-input and multiple-output (MU-MIMO) communication system are disclosed. Concurrent data streams within a first transmission window are transmitted. Each concurrent data stream is associated with a different recipient and includes an equal number of MPDUs. An indication of a retransmission subset of the MPDUs to be retransmitted for each concurrent data stream may be obtained if errors are present. The retransmission subset for each concurrent data stream is retransmitted within a second transmission window. A length of the second transmission window is as long as the longest of the retransmission subsets of the concurrent data streams. One or more new MPDUs may be added to the concurrent data streams in the second transmission window so that each concurrent data stream in the second transmission window carries a same number of MPDUs.

主权项

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.