MU-MIMO protocol efficiency

摘要

A method for improving multiple-user (MU) multiple-input-multiple-output (MIMO) protocol efficiency includes transmitting an MU frame to multiple devices. The MU frame is beamformed to enable a corresponding one of the devices to receive an intended stream at high power. The MU frame includes an additional sounding-field. Acknowledgement (ACK) responses are received from at least some of the plurality of devices. Each of the ACK responses includes a sounding response frame including a channel feedback.

主权项

1. A method for improving multiple-user (MU) multiple-input-multiple-output (MIMO) protocol efficiency, the method comprising:
transmitting an MU frame to a plurality of devices, wherein the MU frame is beamformed to enable a corresponding one of the plurality of devices to receive an intended stream at high power, and the MU frame includes an additional sounding-field comprising a very-high-throughput (VHT)-LTF sequence that is beamformed differently using a different beamforming vector; and receiving, from at least some of the plurality of devices, an acknowledgement (ACK) response frame and a channel feedback that are combined together.