US 12,003,441 B2
Backward compatible physical layer convergence procedure (PLCP) protocol data unit (PPDU) design in wireless local area network (WLAN) system
Hanqing Lou, Syosset, NY (US); Li-Hsiang Sun, San Diego, CA (US); Rui Yang, Greenlawn, NY (US); Joseph S. Levy, Merrick, NY (US); and Xiaofei Wang, North Caldwell, NJ (US)
Assigned to INTERDIGITAL PATENT HOLDINGS, INC., Wilmington, DE (US)
Appl. No. 17/626,543
Filed by INTERDIGITAL PATENT HOLDINGS, INC., Wilmington, DE (US)
PCT Filed Jul. 10, 2020, PCT No. PCT/US2020/041633
§ 371(c)(1), (2) Date Jan. 12, 2022,
PCT Pub. No. WO2021/011387, PCT Pub. Date Jan. 21, 2021.
Claims priority of provisional application 62/873,413, filed on Jul. 12, 2019.
Claims priority of provisional application 62/898,404, filed on Sep. 10, 2019.
Claims priority of provisional application 62/991,974, filed on Mar. 19, 2020.
Prior Publication US 2022/0255693 A1, Aug. 11, 2022
Int. Cl. H04L 5/00 (2006.01); H04W 24/10 (2009.01)
CPC H04L 5/0046 (2013.01) [H04L 5/006 (2013.01); H04W 24/10 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for use in a first station (STA), the method comprising:
transmitting, to a second STA, a request frame that includes an indicator indicating a request for midamble information;
receiving, from the second STA, a response frame that includes the midamble information indicating one or more channel conditions based on the request frame; and
transmitting a physical layer convergence procedure (PLCP) protocol data unit (PPDU) that includes at least one midamble generated based on the midamble information.