	US 12,224,817 B2
	Apparatus and method of uplink beamforming in wireless local area network system
Eunsung Jeon, Suwon-si (KR); Chulho Chung, Suwon-si (KR); Myeongjin Kim, Suwon-si (KR); and Jonghun Han, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Gyconggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Nov. 18, 2021, as Appl. No. 17/530,047.
Claims priority of application No. 10-2020-0155426 (KR), filed on Nov. 19, 2020; application No. 10-2021-0044301 (KR), filed on Apr. 5, 2021; and application No. 10-2021-0052529 (KR), filed on Apr. 22, 2021.
Prior Publication US 2022/0158696 A1, May 19, 2022
Int. Cl. H04B 7/0417 (2017.01); H04B 7/06 (2006.01); H04L 5/00 (2006.01); H04W 84/12 (2009.01)

CPC H04B 7/0417 (2013.01) [H04B 7/0617 (2013.01); H04B 7/0626 (2013.01); H04L 5/0048 (2013.01); H04W 84/12 (2013.01)]

19 Claims

1. A wireless communication method by a first device, the method comprising:

providing a first trigger frame to at least one second device, the first trigger frame requesting at least one sounding null data packet (NDP);

providing a feedback frame to the at least one second device, the feedback frame including feedback information generated based on the at least one sounding NDP; and

providing a second trigger frame to the at least one second device, the second trigger frame requesting at least one beamformed physical layer protocol data unit (PPDU),

wherein each of the first trigger frame and the feedback frame comprises a sounding dialog token number field having a sounding sequence number.