US 11,902,068 B2
Method and apparatus for transmitting PLCP frame in wireless local area network system
Dae Won Lee, Anyang-si (KR); Dong Wook Roh, Anyang-si (KR); Byeong Woo Kang, Anyang-si (KR); Yong Ho Seok, Anyang-si (KR); Yu Jin Noh, Anyang-si (KR); and Bong Hoe Kim, Anyang-si (KR)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Nov. 3, 2021, as Appl. No. 17/517,795.
Application 17/517,795 is a continuation of application No. 16/804,811, filed on Feb. 28, 2020, granted, now 11,196,600.
Application 16/804,811 is a continuation of application No. 16/165,371, filed on Oct. 19, 2018, granted, now 10,616,021, issued on Apr. 7, 2020.
Application 16/165,371 is a continuation of application No. 15/841,385, filed on Dec. 14, 2017, granted, now 10,142,149, issued on Nov. 27, 2018.
Application 15/841,385 is a continuation of application No. 14/985,317, filed on Dec. 30, 2015, granted, now 9,876,662, issued on Jan. 23, 2018.
Application 14/985,317 is a continuation of application No. 14/560,971, filed on Dec. 4, 2014, granted, now 9,276,791, issued on Mar. 1, 2016.
Application 14/560,971 is a continuation of application No. 13/943,572, filed on Jul. 16, 2013, granted, now 8,937,933, issued on Jan. 20, 2015.
Application 13/943,572 is a continuation of application No. 12/941,974, filed on Nov. 8, 2010, granted, now 8,681,757, issued on Mar. 25, 2014.
Claims priority of provisional application 61/285,917, filed on Dec. 11, 2009.
Claims priority of provisional application 61/259,576, filed on Nov. 9, 2009.
Claims priority of application No. 10-2010-0046256 (KR), filed on May 18, 2010.
Prior Publication US 2022/0345341 A1, Oct. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 84/12 (2009.01); H04B 7/0413 (2017.01); H04L 27/14 (2006.01); H03M 5/12 (2006.01); H04L 27/00 (2006.01); H04L 25/49 (2006.01); H04W 28/06 (2009.01); H04L 27/26 (2006.01); H04L 1/00 (2006.01); H04L 27/22 (2006.01); H04L 27/227 (2006.01); H04L 27/156 (2006.01); H04Q 1/46 (2006.01); H04L 27/233 (2006.01); H04L 27/148 (2006.01); H04L 27/144 (2006.01); H04N 21/426 (2011.01)
CPC H04L 27/261 (2013.01) [H04B 7/0413 (2013.01); H04L 1/0041 (2013.01); H04L 1/0061 (2013.01); H04L 27/22 (2013.01); H04L 27/2613 (2013.01); H04W 84/12 (2013.01); H03M 5/12 (2013.01); H04L 25/4904 (2013.01); H04L 27/14 (2013.01); H04L 27/144 (2013.01); H04L 27/148 (2013.01); H04L 27/1563 (2013.01); H04L 27/2273 (2013.01); H04L 27/2331 (2013.01); H04L 27/2332 (2013.01); H04L 27/2647 (2013.01); H04L 2027/0028 (2013.01); H04N 21/426 (2013.01); H04Q 1/46 (2013.01); H04W 28/06 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
at least one processor;
at least one memory including computer program code, the memory and the computer program code being configured to, when executed by the processor, cause the apparatus to perform at least the following:
receive a Physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDU), the PPDU comprising:
a first field including a first symbol that is mapped onto a first binary phase shift keying (BPSK) constellation;
a second field including a second symbol and a third symbol immediately after the second symbol, the second symbol being mapped onto the first BPSK constellation, and the third symbol being mapped onto a second BPSK constellation and rotated by 90° counter-clockwise relative to the second symbol; and
a training field immediately after the second field,
wherein the second symbol includes an indicator indicating a Single User-Multiple Input Multiple Output (SU-MIMO) PPDU or a multi user-MIMO (MU-MIMO) PPDU, and the third symbol includes a cyclic redundancy check (CRC) for the second symbol and at least a portion of the third symbol.