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Systems and methods of location and tracking

  • US 10,132,917 B2
  • Filed: 08/21/2015
  • Issued: 11/20/2018
  • Est. Priority Date: 02/25/2014
  • Status: Active Grant
First Claim
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1. A system for automatic installation and configuration of zone tags in a position location determination system having mobile tags and zone tags comprising:

  • the position coordinates of a subset of the zone tags are manually determined, referred to as configured zone tag list, and the remaining zone tags are put in an un-configured list;

    for a first zone tag, position server determines list of zone tags which are in close proximity to a first zone tag and whose signals the first zone tag can detect, referred to as a zone tag-proximity-list; and

    iteratively;

    retrieving the first zone tag from said un-configured list;

    making range measurements comprising RTD (round trip delay), between the first un-configured zone tag and the set of configured zone tags in the zone tag-proximity-list of said first zone tag; and

    position server verifying if there are enough zone tags in the first zone tag'"'"'s zone tag-proximity-list to make an accurate estimate of the first zone tag'"'"'s position location; and

    determining the first un-configured zone tag'"'"'s position using the range measurements, and adding the first zone tag whose position has been determined to the configured zone tag list.

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