US 12,074,633 B2
System and method for indoor location
Saed Younis, San Diego, CA (US); Wesley J. Chaffin, San Diego, CA (US); and Nathaniel Danandeh, San Diego, CA (US)
Assigned to LONPROX CORPORATION, San Diego, CA (US)
Filed by Lonprox Corporation, San Diego, CA (US)
Filed on Jul. 27, 2020, as Appl. No. 16/939,969.
Claims priority of provisional application 62/879,884, filed on Jul. 29, 2019.
Prior Publication US 2021/0033737 A1, Feb. 4, 2021
Int. Cl. H04B 1/7073 (2011.01); G01S 19/39 (2010.01); G01S 19/40 (2010.01)
CPC H04B 1/7073 (2013.01) [G01S 19/396 (2019.08); G01S 19/40 (2013.01)] 36 Claims
OG exemplary drawing
 
1. A system enabling location determination within an indoor environment, the system comprising:
a plurality of stationary nodes to be arranged as a constellation within the indoor environment, wherein each of the plurality of stationary nodes is configured to
transmit a ranging signal,
receive ranging signals transmitted by one or more neighboring ones of the plurality of stationary nodes,
calculate an offset between the ranging signal that the stationary node transmits and the ranging signals received from the one or more neighboring stationary nodes, and
include the offset in the ranging signal that the stationary node transmits;
wherein each of one or more of the plurality of stationary nodes is housed within a containing device that provides a function other than location determination.