US 9,813,854 B2
System and method for detection of indoor tracking units
Haojian Jin, Santa Clara, CA (US); and Christian Holz, San Francisco, CA (US)
Assigned to EXCALIBUR IP, LLC, New York, NY (US)
Filed by EXCALIBUR IP, LLC, New York, NY (US)
Filed on Mar. 31, 2016, as Appl. No. 15/87,383.
Application 15/087,383 is a continuation of application No. 14/462,756, filed on Aug. 19, 2014, granted, now 9,363,644.
Application 14/462,756 is a continuation in part of application No. 14/333,056, filed on Jul. 16, 2014, granted, now 9,385,821.
Prior Publication US 2016/0212582 A1, Jul. 21, 2016
Int. Cl. H04W 24/00 (2009.01); H04W 4/02 (2009.01); H04W 4/04 (2009.01); H04W 4/00 (2009.01); H04W 84/18 (2009.01); G01C 21/20 (2006.01)
CPC H04W 4/02 (2013.01) [H04W 4/008 (2013.01); H04W 4/021 (2013.01); H04W 4/04 (2013.01); H04W 84/18 (2013.01); G01C 21/206 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method comprising:
monitoring, via a mobile device, a location for signals associated with at least one Bluetooth low energy (BLE) unit, said monitoring comprising detecting performance of a gesture that changes position of the mobile device during the gesture, said location comprising an unknown quantity of BLE units and BLE unit positions at said location;
identifying, via the mobile device, a trajectory of the performed gesture;
detecting, via the mobile device, a signal from a first BLE unit during performance of the gesture based on said trajectory, said detected signal comprising a minimum value and a maximum value, said minimum value corresponding to a first position of the mobile device along the trajectory that is a first distance away from the first BLE unit during the gesture, said maximum value corresponding to a second position of the mobile device along the trajectory that is a second distance from the first BLE unit during the gesture;
determining, via the mobile device, a physical position of the first BLE unit at said location respective to the mobile device based on said minimum value and said maximum value, said determination of the physical location further comprising determining, via the mobile device executing propagation software, an orthogonal line connecting the first position and the second position, wherein said physical position of the first BLE unit is along said orthogonal line distal to said first position; and
visibly displaying, on a display associated with said mobile device, a spatial map of said location, said spatial map comprising an indication of the physical position of the first BLE unit.