US 12,309,099 B2
HARQ operations at PHY layer level
Taewon Song, Seoul (KR); Jeongki Kim, Seoul (KR); Jinsoo Choi, Seoul (KR); Suhwook Kim, Seoul (KR); Jinmin Kim, Seoul (KR); Sungjin Park, Seoul (KR); and Insun Jang, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/762,665
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Aug. 26, 2020, PCT No. PCT/KR2020/011417
§ 371(c)(1), (2) Date Mar. 22, 2022,
PCT Pub. No. WO2021/066326, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 10-2019-0122619 (KR), filed on Oct. 2, 2019; and application No. 10-2019-0122621 (KR), filed on Oct. 2, 2019.
Prior Publication US 2022/0416983 A1, Dec. 29, 2022
Int. Cl. H04L 5/00 (2006.01); H04L 1/1607 (2023.01); H04L 1/1812 (2023.01); H04L 1/1822 (2023.01); H04L 1/1829 (2023.01); H04L 1/1867 (2023.01); H04L 27/26 (2006.01); H04W 72/04 (2023.01); H04W 84/12 (2009.01)
CPC H04L 5/0055 (2013.01) [H04L 1/1812 (2013.01); H04L 1/1893 (2013.01); H04W 72/04 (2013.01); H04W 84/12 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method performed in a wireless local area network system, the method comprising:
transmitting a first physical protocol data unit (PPDU),
wherein the first PPDU includes a first preamble, a second preamble being contiguous to the first preamble, a data field being contiguous to the second preamble,
wherein the first preamble incudes a legacy signal (L-SIG) field, and a repeated L-SIG (RL-SIG) field being contiguous to the L-SIG field,
wherein a length field in the L-SIG field is set to a value satisfying a condition a remainder is zero when the length field is divided by three, wherein the remainder is used to differentiate the first PPDU from a High Efficiency (HE) PPDU,
wherein the second preamble includes a signal (SIG) field carrying information to interpret the first PPDU,
wherein the SIG field includes a first field related to a physical (PHY) version of the first PPDU, a second field related to transmission opportunity (TXOP) for the first PPDU, a third field related to a Basic Service Set (BSS) Color for the first PPDU, and a fourth field related to a per-user feedback location,
wherein the first field has a length of three bits,
wherein the fourth field includes information related to resources in which a hybrid automatic repeat request (HARQ) feedback frame is received,
wherein the fourth field includes information related to a starting location of a first tone set including first sub-tones and second sub-tones, wherein the first sub-tones are used for indicating an acknowledgment (ACK) response for the first PPDU, and the second sub-tones are used for indicating a negative ACK (NACK) response for the first PPDU; and
receiving the HARQ feedback frame including a feedback part,
wherein the feedback part is configured based on one of the first sub-tones and the second sub-tones to indicate one of the ACK response and the NACK response.