US 11,968,069 B2
Method and apparatus for receiving PPDU with duplicated data through 80 MHZ band 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. 21, 2023, as Appl. No. 18/305,107.
Application 18/305,107 is a continuation of application No. 18/010,952, previously published as PCT/KR2021/008248, filed on Jun. 30, 2021.
Claims priority of application No. 10-2020-0081636 (KR), filed on Jul. 2, 2020; application No. 10-2020-0081649 (KR), filed on Jul. 2, 2020; and application No. 10-2020-0084241 (KR), filed on Jul. 8, 2020.
Prior Publication US 2023/0261920 A1, Aug. 17, 2023
Int. Cl. H04L 1/00 (2006.01); H04L 27/26 (2006.01); H04W 72/0453 (2023.01); H04W 84/12 (2009.01)
CPC H04L 27/2621 (2013.01) [H04L 1/0068 (2013.01); H04W 72/0453 (2013.01); H04W 84/12 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method in a wireless local area network (WLAN) system, the method comprising:
decoding, by a receiving STA, a Physical Protocol Data Unit (PPDU),
wherein the PPDU includes a preamble and a data field,
wherein, based on a bandwidth of the PPDU being 80 MHz, the bandwidth includes lower and higher 484 tone-resource units (RUs),
wherein the data field includes first data for the lower 484-tone RU and second data for the higher 484-tone RU,
wherein the second data is data obtained by duplicating the first data and applying phase rotation thereto,
wherein the lower and higher 484-tone RUs are resource units including 484 tones,_;
wherein constellation mapping is performed on the first data based on binary phase shift keying (BPSK) and dual carrier modulation (DCM) in the lower 484-tone RU,
wherein a coding rate for the BPSK is 1/2,
wherein, based on the DCM being performed in the lower 484-tone RU, a number of data subcarriers per RU is equal to half a number of data subcarriers per RU in the absence of the DCM, and
wherein the first data and the second data are transmitted through a single stream.