US 9,810,766 B2
Method and apparatus for modeling time relationships between clocks
Robert W. Boyd, Eidson, TN (US)
Assigned to ZIH Corp., Lincolnshire, IL (US)
Filed by ZIH Corp., Lincolnshire, IL (US)
Filed on Jun. 17, 2016, as Appl. No. 15/185,567.
Application 15/185,567 is a continuation of application No. 13/588,710, filed on Aug. 17, 2012, granted, now 9,395,432.
Claims priority of provisional application 61/524,569, filed on Aug. 17, 2011.
Prior Publication US 2016/0291126 A1, Oct. 6, 2016
Int. Cl. H04L 12/28 (2006.01); G01S 5/06 (2006.01); G01S 5/10 (2006.01); G01S 5/02 (2010.01); H04L 5/00 (2006.01); H04W 24/08 (2009.01); H04J 1/16 (2006.01)
CPC G01S 5/06 (2013.01) [G01S 5/021 (2013.01); G01S 5/0221 (2013.01); G01S 5/10 (2013.01); H04L 5/0048 (2013.01); H04W 24/08 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method comprising:
identifying a link that is one of a plurality of links of a wireless locating system, the link being defined by at least a reference signal source, a first receiver unit, and a second receiver unit;
determining, via a processor, a reliability metric for signal transmission via a link based on first link data, the link data describing first reference signal events for the link; and
modifying, via the processor, the reliability metric based on second link data describing second reference signal events for the link, wherein modifying the reliability metric includes:
determining whether the second link data is consistent with the first link data;
adjusting the reliability metric using a first function when the second link data is consistent with the first link data; and
adjusting the reliability metric using a second function different than the first function when the second link data is inconsistent with the second link data.