US 11,716,231 B1
Waveform designs for JCS in NTN systems
Weimin Duan, San Diego, CA (US); Jun Ma, San Diego, CA (US); Huilin Xu, Temecula, CA (US); Qiang Wu, San Diego, CA (US); Lianghai Ji, San Diego, CA (US); Mehmet Izzet Gurelli, San Diego, CA (US); Karthik Anantha Swamy, La Jolla, CA (US); and Hyojin Lee, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Aug. 24, 2022, as Appl. No. 17/822,057.
Int. Cl. H04L 27/26 (2006.01); H04L 5/00 (2006.01); H04W 8/22 (2009.01); H04B 7/185 (2006.01)
CPC H04L 27/26025 (2021.01) [H04L 5/005 (2013.01); H04L 5/0007 (2013.01); H04W 8/22 (2013.01); H04B 7/18523 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A method of enabling joint communication and sensing (JCS) by a non-terrestrial network (NTN), the method comprising:
transmitting, with an NTN platform, radio frequency (RF) signals toward earth, the RF signals comprising an orthogonal frequency-division multiplexing (OFDM) waveform with a plurality of symbols including a JCS symbol and one or more non-JCS symbols, wherein:
the RF signals are incident on an area of the earth defining a footprint, and
a duration of a cyclic prefix (CP) of the JCS symbol is a function of a width of the footprint; and
receiving, at the NTN platform, one or more reflections of the JCS symbol.