US 12,137,014 B2
Methods and apparatus for generation of physical layer protocol data units for vehicular environments
Rui Cao, Sunnyvale, CA (US); Hongyuan Zhang, Fremont, CA (US); Hui-Ling Lou, Sunnyvale, CA (US); and Xiayu Zheng, San Jose, CA (US)
Assigned to Marvell Asia Pte Ltd, Singapore (SG)
Filed by Marvell Asia Pte Ltd, Singapore (SG)
Filed on Jan. 8, 2024, as Appl. No. 18/407,159.
Application 18/407,159 is a continuation of application No. 18/097,427, filed on Jan. 16, 2023, granted, now 11,870,625.
Application 18/097,427 is a continuation of application No. 17/334,638, filed on May 28, 2021, granted, now 11,558,226, issued on Jan. 17, 2023.
Application 17/334,638 is a continuation of application No. 16/179,320, filed on Nov. 2, 2018, granted, now 11,032,118, issued on Jun. 8, 2021.
Claims priority of provisional application 62/595,452, filed on Dec. 6, 2017.
Prior Publication US 2024/0146590 A1, May 2, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 5/00 (2006.01); H04L 27/26 (2006.01); H04W 84/12 (2009.01)
CPC H04L 27/2602 (2013.01) [H04L 5/0092 (2013.01); H04L 5/0094 (2013.01); H04L 27/2627 (2013.01); H04L 27/26025 (2021.01); H04L 27/2603 (2021.01); H04W 84/12 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for wireless communication in a vehicular communication network, the method comprising:
selecting, at a communication device, a frequency bandwidth via which a physical layer (PHY) protocol data unit (PPDU) will be transmitted in the vehicular communication network, wherein the frequency bandwidth is selected from a set of permissible frequency bandwidths that includes a 10 MHz bandwidth and a 20 MHz bandwidth;
generating, at a communication device, the PPDU i) according to a downclocking ratio of 1/2, and ii) based on an orthogonal frequency division multiplexing (OFDM) numerology defined by an IEEE 802.11ac Standard, wherein the PPDU is generated to span the selected frequency bandwidth and to include a PHY preamble having a legacy preamble portion and a non-legacy preamble portion, wherein the legacy preamble portion is generated to include a legacy signal (L-SIG) field, wherein the non-legacy preamble portion is generated to include a non-legacy signal field and a repetition of the L-SIG field (RL-SIG), and wherein:
in response to the selected frequency bandwidth being 10 MHz, the PPDU is generated according to the downclocking ratio of 1/2 and based on the OFDM numerology defined by the IEEE 802.11ac Standard for 20 MHz PPDUs, and
in response to the selected frequency bandwidth being 20 MHz, the PPDU is generated according to the downclocking ratio of 1/2 and based on the OFDM numerology defined by the IEEE 802.11ac Standard for 40 MHz PPDUs; and
transmitting, by the communication device, the PPDU in the vehicular communication network.