Patent ID: 8139536
Filing Date: 2012-03-20
Classification: H04B,H04L

Abstract:
1. A method for communicating in a wireless local area network (WLAN) network, the method comprising: sending, by a beamformer, a feedback request to a beamformee over a wireless channel; receiving a feedback response from the beamformee, the feedback response including indicia for the beamformer to form or modify a beam with the beamformee, wherein the indicia was identified by the beamformee based on channel characteristics of the feedback request, the feedback response including a timestamp of when the feedback request arrived at the beamformee; determining a time delay as an interval between a time of arrival of the feedback response minus the timestamp; and when the determined time delay is within a channel coherence time, beamforming a data signal to the beamformee using beamforming coefficients based on indicia in the feedback response; otherwise disregarding the feedback response.