US 11,894,964 B2
Secure long training field (LTF)
Stephen Jay Shellhammer, Ramona, CA (US); Bin Tian, San Diego, CA (US); Alireza Raissinia, Monte Sereno, CA (US); and Youhan Kim, Saratoga, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Dec. 13, 2022, as Appl. No. 18/065,523.
Application 18/065,523 is a continuation of application No. 17/244,500, filed on Apr. 29, 2021, granted, now 11,546,196.
Claims priority of provisional application 63/076,181, filed on Sep. 9, 2020.
Claims priority of provisional application 63/019,081, filed on May 1, 2020.
Claims priority of provisional application 63/019,101, filed on May 1, 2020.
Prior Publication US 2023/0113177 A1, Apr. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 27/26 (2006.01); H04L 5/00 (2006.01); H04B 7/0452 (2017.01)
CPC H04L 27/2613 (2013.01) [H04L 5/0023 (2013.01); H04L 5/0048 (2013.01); H04L 27/2605 (2013.01); H04B 7/0452 (2013.01)] 34 Claims
OG exemplary drawing
 
1. A method for wireless communication by a wireless communication device, the method comprising:
selecting a subset of bits of a pseudorandom bit sequence based on a number of subcarriers associated with a long training field (LTF) of a physical (PHY) layer convergence protocol (PLCP) protocol data unit (PPDU), a number of bits in the subset of bits being based on the number of subcarriers and a type of modulation scheme;
mapping values of the subset of bits to first modulation symbols representing a first LTF symbol of the LTF in accordance with the type of modulation scheme, each of the first modulation symbols being modulated on a respective one of the number of subcarriers, and each of the first modulation symbols being represented by a respective subset of values of the subset of bits; and
transmitting the PPDU including the LTF.