CPC H04B 7/0408 (2013.01) [H04B 7/0413 (2013.01); H04B 7/0491 (2013.01); H04B 17/309 (2015.01)] | 14 Claims |
1. A method for maintaining beamforming in a wireless audio-video (AV) system, the method comprising:
transmitting, by a first wireless device, a packet including a non-training field and multiple training fields to a second wireless device,
wherein the non-training field is transmitted based on a best sector combination among predetermined multiple candidate sector combinations between the first wireless device and the second wireless device, and
wherein the multiple training fields are transmitted based on the multiple candidate sector combinations;
receiving, by the first wireless device, candidate beam feedback information as a response to the multiple training fields;
determining, by the first wireless device, whether or not a channel change that is caused by blockage occurs based on the candidate beam feedback information; and
based on a determined result that the channel change occurs, updating, by the first wireless device, the best sector combination based on the candidate feedback information.
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