US 9,810,764 B2
Systems and methods for high precision indoor location tracking
Venson Shaw, Kirkland, WA (US); and Jin He, Fremont, CA (US)
Assigned to AT&T Intellectual Preoperty I, L.P., Atlanta, GA (US)
Filed by AT&T Intellectual Property I, LP, Atlanta, GA (US)
Filed on Sep. 30, 2013, as Appl. No. 14/41,981.
Prior Publication US 2015/0091757 A1, Apr. 2, 2015
Int. Cl. G01S 3/02 (2006.01); G01S 5/04 (2006.01); G01S 5/06 (2006.01); H04W 64/00 (2009.01); H01Q 1/00 (2006.01); G01S 5/02 (2010.01)
CPC G01S 5/04 (2013.01) [G01S 5/06 (2013.01); H04W 64/006 (2013.01); G01S 5/02 (2013.01); H01Q 1/007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for locating a mobile device performed by a first radio frequency signal mediator having an array of antennas, the method comprising:
receiving, at the first radio frequency signal mediator that serves as a centralized hub, a radio frequency signal from the mobile device;
determining, at the first radio frequency signal mediator a first layer two radio access network measurement data from the radio frequency signal;
receiving, at the first radio frequency signal mediator second layer two radio access network measurement data of from a second radio frequency signal mediator;
determining, at the first radio frequency signal mediator, a location for the mobile device based on the first layer two radio access network measurement data and the second layer two radio access network measurement data; and
providing the location for the mobile device to a location server.