US 12,132,578 B1
Physical layer (PHY) data unit encoding for hybrid automatic repeat request (HARQ) transmission
Yan Zhang, Palo Alto, CA (US); Hongyuan Zhang, Fremont, CA (US); Liwen Chu, San Ramon, CA (US); and Rui Cao, Sunnyvale, CA (US)
Assigned to Marvell Asia Pte Ltd, Singapore (SG)
Filed by Marvell Asia Pte Ltd, Singapore (SG)
Filed on Jul. 31, 2023, as Appl. No. 18/228,471.
Application 18/228,471 is a continuation of application No. 17/706,247, filed on Mar. 28, 2022, granted, now 11,716,177.
Application 17/706,247 is a continuation of application No. 16/912,643, filed on Jun. 25, 2020, granted, now 11,290,223, issued on Mar. 29, 2022.
Claims priority of provisional application 62/866,475, filed on Jun. 25, 2019.
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 1/18 (2023.01); H04L 1/00 (2006.01); H04L 1/1812 (2023.01); H04L 1/1867 (2023.01); H04L 5/00 (2006.01); H04W 84/12 (2009.01)
CPC H04L 1/1893 (2013.01) [H04L 1/0008 (2013.01); H04L 1/1812 (2013.01); H04L 5/0007 (2013.01); H04L 5/0055 (2013.01); H04W 84/12 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method for hybrid automatic repeat request (HARQ) transmission in a wireless local area network (WLAN), the method comprising:
generating, at a communication device, one or more HARQ data units to be transmitted according to an HARQ process;
for respective HARQ data units among the one or more HARQ data units, determining, by the communication device, HARQ parameters to be used for transmission of the HARQ data unit, including:
determining initial HARQ parameters to be used for transmission of the HARQ data unit, including i) determining an initial number of orthogonal frequency division multiplexing (OFDM) symbols that will be occupied by the HARQ data unit and ii) determining, based on the initial number of OFDM symbols, an initial pre-forward error correction (pre-FEC) coding padding factor corresponding to adding padding bits prior to forward error correction (FEC) encoding of the HARQ data unit,
determining, based at least in part on the initial pre-FEC coding padding factor, whether the HARQ data unit will be misaligned an end of a last OFDM symbol occupied by the HARQ data unit, and
in response to determining that the HARQ data unit will be misaligned with the end of the last OFDM symbol occupied by the HARQ data unit, adjusting the initial pre-FEC coding padding factor to account for a reduced data tone OFDM symbol segment to be occupied by the HARQ data unit;
generating, at the communication device using the HARQ parameters, one or more HARQ aggregate data units to include the one or more HARQ data units; and
transmitting, with the communication device, the one or more HARQ aggregate data units to one or more other communication devices.