US 11,941,971 B2
Methods and apparatus for contingency communications
Titus Lo, Bellevue, WA (US); and Xiaodong Li, Bellevue, WA (US)
Assigned to Neo Wireless LLC, Wayne, PA (US)
Filed by Neo Wireless LLC, Wayne, PA (US)
Filed on Aug. 17, 2022, as Appl. No. 17/889,901.
Application 15/016,092 is a division of application No. 13/424,043, filed on Mar. 19, 2012, granted, now 9,275,540, issued on Mar. 1, 2016.
Application 17/889,901 is a continuation of application No. 17/326,047, filed on May 20, 2021, granted, now 11,501,632.
Application 17/326,047 is a continuation of application No. 17/099,946, filed on Nov. 17, 2020, granted, now 11,049,384, issued on Jun. 29, 2021.
Application 17/099,946 is a continuation of application No. 16/400,283, filed on May 1, 2019, abandoned.
Application 16/400,283 is a continuation of application No. 15/713,002, filed on Sep. 22, 2017, granted, now 10,325,483, issued on Jun. 18, 2019.
Application 15/713,002 is a continuation of application No. 15/016,092, filed on Feb. 4, 2016, granted, now 9,773,406, issued on Sep. 26, 2017.
Claims priority of provisional application 61/595,578, filed on Feb. 6, 2012.
Prior Publication US 2022/0406169 A1, Dec. 22, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G08B 23/00 (2006.01); G08B 25/01 (2006.01); G08B 27/00 (2006.01); H04W 4/90 (2018.01); H04W 76/50 (2018.01)
CPC G08B 27/006 (2013.01) [G08B 25/016 (2013.01); G08B 27/001 (2013.01); H04W 4/90 (2018.02); H04W 76/50 (2018.02)] 80 Claims
OG exemplary drawing
 
1. A method performed by a land vehicle, the method comprising:
transmitting, to other wireless devices, a primary synchronization signal, having a first sequence, in a first orthogonal frequency division multiplex (OFDM) symbol and the primary synchronization signal repeated in a second OFDM symbol consecutive with the first OFDM symbol;
transmitting, to the other wireless devices, a secondary synchronization signal, having a second sequence, in a third OFDM symbol and the secondary synchronization signal repeated in a fourth OFDM symbol consecutive with the third OFDM symbol; and
directly communicating information with at least one of the other wireless devices.