US 11,962,530 B2
Pilot transmission and reception for orthogonal frequency division multiple access
Dae Won Lee, Austin, TX (US); Young Hoon Kwon, Austin, TX (US); Sungho Moon, Austin, TX (US); and Yujin Noh, Austin, TX (US)
Assigned to Atlas Global Technologies LLC, Austin, TX (US)
Filed by Atlas Global Technologies LLC, Austin, TX (US)
Filed on May 5, 2023, as Appl. No. 18/313,167.
Application 18/313,167 is a continuation of application No. 17/882,403, filed on Aug. 5, 2022, granted, now 11,652,594, issued on May 16, 2023.
Application 17/882,403 is a continuation of application No. 17/334,290, filed on May 28, 2021, granted, now 11,418,307, issued on Aug. 16, 2022.
Application 17/334,290 is a continuation of application No. 16/816,092, filed on Mar. 11, 2020, granted, now 11,050,539, issued on Jun. 29, 2021.
Application 16/816,092 is a continuation of application No. 16/443,683, filed on Jun. 17, 2019, granted, now 10,630,444, issued on Apr. 21, 2020.
Application 16/443,683 is a continuation of application No. 15/444,188, filed on Feb. 27, 2017, granted, now 10,361,828, issued on Jul. 23, 2019.
Application 15/444,188 is a continuation of application No. 15/150,127, filed on May 9, 2016, granted, now 9,621,311, issued on Apr. 11, 2017.
Claims priority of provisional application 62/159,187, filed on May 8, 2015.
Prior Publication US 2023/0275724 A1, Aug. 31, 2023
Int. Cl. H04L 5/00 (2006.01); H04L 27/00 (2006.01); H04L 27/26 (2006.01); H04W 72/1263 (2023.01); H04W 72/20 (2023.01); H04W 84/12 (2009.01)
CPC H04L 5/0048 (2013.01) [H04L 5/0007 (2013.01); H04L 5/001 (2013.01); H04L 27/0014 (2013.01); H04L 27/2657 (2013.01); H04W 72/1263 (2013.01); H04W 72/20 (2023.01); H04W 84/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wireless device for transmitting a frame, the wireless device comprising:
a processor; and
a memory device coupled to the processor and storing instructions that when executed by the processor cause the wireless device to perform steps comprising:
determining, by the wireless device, a plurality of Resource Units (RUs) of the frame;
providing, by the wireless device, a first plurality of pilots in one or more RUs of the plurality of RUs at a first set of positions, respectively; and
transmitting, by the wireless device, the frame,
wherein the frame is an Orthogonal Frequency Division Multiple Access (OFDMA) frame and the plurality of RUs include respective pluralities of subcarriers,
wherein the first set of positions are uniformly spaced,
wherein a first RU is a 26-subcarrier RU and a second RU of the frame is a 52-subcarrier RU,
wherein the first set of positions correspond to non-null positions of a Long Training field (LTF) of the frame, and
wherein when the frame includes a 4× High Efficiency (HE) Long Training Field (HE-LTF), the first RU carries two pilots, and the second RU carries four pilots.