US 11,057,255 B2
Method for transmitting and receiving signals in wireless LAN system and apparatus therefor
Sunwoong Yun, Seoul (KR); Jinmin Kim, Seoul (KR); Sungjin Park, Seoul (KR); and Jinsoo Choi, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Apr. 9, 2020, as Appl. No. 16/844,685.
Application 16/844,685 is a continuation of application No. 16/326,165, granted, now 10,659,267, previously published as PCT/KR2018/004128, filed on Apr. 9, 2018.
Claims priority of provisional application 62/531,307, filed on Jul. 11, 2017.
Claims priority of provisional application 62/535,240, filed on Jul. 21, 2017.
Claims priority of provisional application 62/550,717, filed on Aug. 28, 2017.
Claims priority of provisional application 62/552,394, filed on Aug. 31, 2017.
Claims priority of provisional application 62/560,199, filed on Sep. 19, 2017.
Prior Publication US 2020/0235977 A1, Jul. 23, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 27/26 (2006.01); H04L 5/00 (2006.01); H04W 84/12 (2009.01)
CPC H04L 27/2613 (2013.01) [H04L 27/2602 (2013.01); H04L 27/2607 (2013.01); H04L 5/001 (2013.01); H04L 5/0023 (2013.01); H04W 84/12 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method in a wireless local area network (WLAN) system, the method performed by a transmitting station (STA) and comprising:
generating a training (TRN) subfield based on a basic TRN subfield,
wherein:
the basic TRN subfield is configured for at least one transmit (TX) chain,
the basic TRN subfield is configured based on a first sequence, a zero sequence being contiguous to the first sequence and a second sequence being contiguous to the zero sequence,
the first and second sequences have a same number of elements, and
the zero sequence is configured based on {0, 0, 0}; and
transmitting an Orthogonal Frequency Division Multiplexing (OFDM) physical protocol data unit (PPDU) including a header field and a TRN field to a receiving STA,
wherein:
the TRN field starts with T repetitions of the TRN subfield,
T denotes a non-zero positive integer,
the header field includes a length field related to the TRN subfield
the TRN subfield is determined to be one of a short TRN subfield, a normal TRN subfield and a long TRN subfield based on the length field,
the short TRN subfield is configured based on 1 repetition of the basic TRN subfield,
the normal TRN subfield is configured based on 2 repetitions of the basic TRN subfield, and
the long TRN subfield is configured based on 4 repetitions of the basic TRN subfield.