US Patent No. 10,143,003

METHODS AND APPARATUS FOR BEAMFORMING FEEDBACK IN WIRELESS SYSTEMS


Patent No. 10,143,003
Issue Date November 27, 2018
Title Methods And Apparatus For Beamforming Feedback In Wireless Systems
Inventorship Kaushik M. Josiam, Fort Worth, TX (US)
Rakesh Taori, McKinney, TX (US)
Xiaoyi Liu, Irvine, CA (US)
Assignee Samsung Electronics Co., Ltd., Suwon-si (KR)

Claim of US Patent No. 10,143,003

1. A station (STA) for transmitting in a wireless local area network (WLAN), the STA comprising:a controller; and
a transceiver configured to:
receive, from an access point (AP), a channel sounding sequence including a null data packet announcement frame (NDPA) including information indicating STAs to transmit a feedback report and information indicating that the feedback report should include an index of a selected resource unit and a signal to noise ratio (SNR) value averaged over data subcarriers in the selected resource unit for each spatial stream, a null data packet (NDP) containing pilots to compute the feedback report, and a trigger frame (TF) to trigger transmission of the feedback report; and
transmit the feedback report to the AP in response to receipt of the TF.