US 11,968,042 B2
Method and device for setting 1X EHT-STF sequence for broadband in wireless LAN system
Eunsung Park, Seoul (KR); Jinyoung Chun, Seoul (KR); Jinsoo Choi, Seoul (KR); and Dongguk Lim, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Apr. 5, 2023, as Appl. No. 18/131,285.
Application 18/131,285 is a continuation of application No. 17/797,709, previously published as PCT/KR2021/002177, filed on Feb. 22, 2021.
Claims priority of application No. 10-2020-0021226 (KR), filed on Feb. 20, 2020; and application No. 10-2020-0053431 (KR), filed on May 4, 2020.
Prior Publication US 2023/0308211 A1, Sep. 28, 2023
Int. Cl. H04L 1/00 (2006.01); H04W 52/52 (2009.01); H04W 84/12 (2009.01)
CPC H04L 1/0069 (2013.01) [H04W 52/52 (2013.01); H04W 84/12 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method in a Wireless Local Area Network (WLAN) system, the method comprising:
receiving, by a receiving station (STA), a Physical Protocol Data Unit (PPDU) from a transmitting STA; and
decoding, by the receiving STA, the PPDU,
wherein the PPDU is a multi-user (MU) PPDU except for a trigger based (TB) PPDU and includes a universal-signal (U-SIG)and a Short Training Field (STF) field,
wherein the STF field is generated based on a STF sequence,
wherein based on a bandwidth of the PPDU being a 320 MHz, a Punctured Channel Information field of the U-SIG includes a pattern in which a 40 MHz or 80 MHz bandwidth is punctured in the bandwidth of the PPDU,
wherein the bandwidth of the PPDU includes first to fourth 80 MHz band,
wherein the pattern includes 40 MHz puncturing cases and 80 MHz puncturing cases,
wherein the 40 MHz puncturing cases include first to eighth patterns,
wherein the first pattern is a pattern in which a lower 40 MHz band in the first 80 MHz band in the bandwidth of the PPDU is punctured,
wherein the second pattern is a pattern in which a higher 40 MHz band in the first 80 MHz band in the bandwidth of the PPDU is punctured,
wherein the third pattern is a pattern in which a lower 40 MHz band in the second 80 MHz band in the bandwidth of the PPDU is punctured,
wherein the fourth pattern is a pattern in which a higher 40 MHz band in the second 80 MHz band in the bandwidth of the PPDU is punctured,
wherein the fifth pattern is a pattern in which a lower 40 MHz band in the third 80 MHz band in the bandwidth of the PPDU is punctured,
wherein the sixth pattern is a pattern in which a higher 40 MHz band in the third 80 MHz band in the bandwidth of the PPDU is punctured,
wherein the seventh pattern is a pattern in which a lower 40 MHz band in the fourth 80 MHz band in the bandwidth of the PPDU is punctured,
wherein the eighth pattern is a pattern in which a higher 40 MHz band in the fourth 80 MHz band in the bandwidth of the PPDU is punctured,
wherein, for the first to eighth pattern, the 40 MHz band punctured in the first to fourth 80 MHz bands is a 40 MHz band at both ends of each 80 MHz band and may not be an intermediate 40 MHz band of each 80 MHz band,
wherein the 80 MHz puncturing cases include ninth to twelfth patterns,
wherein the ninth pattern is a pattern in which the first 80 MHz band is punctured in the bandwidth of the PPDU,
wherein the tenth pattern is a pattern in which the second 80 MHz band is punctured in the bandwidth of the PPDU,
wherein the eleventh pattern is a pattern in which the third 80 MHz band is punctured in the bandwidth of the PPDU,
wherein the twelfth pattern is a pattern in which the fourth 80 MHz band is punctured in the bandwidth of the PPDU,
wherein, for the ninth to twelfth pattern, one 80 MHz band among the first to fourth 80 MHz bands is punctured and is not partially punctured for two or more 80 MHz bands,
wherein the STF sequence is a sequence including an M sequence and is defined as follows:
{M1−M0−M1−M0M1−M0−M1−M0−M−1M0M−1M0−M−1M0M−1M} * (1+j)/sqrt(2),
wherein sqrt( ) denotes a square root, and
wherein the M sequence is defined as follows:
M={−1,−1,−1,1,1,1,−1,1,1,1,−1,1,1,−1,1}.