Updates to MU-MIMO rate adaptation algorithm

摘要

A method of determining a modulation coding scheme (MCS) for communications between a communications device and a client station (STA). The communications device determines a first MCS for transmitting data to the STA during a first sounding interval based, at least in part, on channel state information received from the STA upon initiation of the first sounding interval. The device determines a first series of packet error rates (PERs) associated with one or more data transmissions to the STA during the first sounding interval. The device then determines a second MCS for transmitting data to the STA during a second sounding interval based, at least in part, on the first PER in the first series of PERs. Specifically, the second MCS is independent of the remaining PERs in the first series.

主权项

1. A method of determining a modulation coding scheme (MCS) for communications with a client station (STA), the method comprising:
determining a first MCS for transmitting data to the STA during a first sounding interval based, at least in part, on channel state information received from the STA upon initiation of the first sounding interval; determining a first series of packet error rates (PERs) associated with one or more data transmissions to the STA during the first sounding interval; determining a first channel feedback vector based at least in part on the channel state information received from the STA at the initiation of the first sounding interval; determining a second channel feedback vector based at least in part on channel state information received from the STA at the initiation of the second sounding interval; determining a Doppler level of the STA based at least in part on a difference between the first channel feedback vector and the second channel feedback vector; and determining a second MCS for transmitting data to the STA during a second sounding interval based, at least in part, on the first PER in the first series of PERs, wherein the second MCS is independent of the remaining PERs in the first series of PERs.