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Locating devices based on antenna coordinates

  • US 10,444,320 B2
  • Filed: 10/06/2017
  • Issued: 10/15/2019
  • Est. Priority Date: 10/06/2016
  • Status: Active Grant
First Claim
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1. A method of locating electronic devices in a physical space, the method comprising:

  • generating multiple antenna coordinates based on receipt of wireless packets by a system that includes multiple antenna units, each antenna coordinate based on timing information from the antenna units and representing a region in a multi-dimensional antenna coordinate system whose dimensions are denominated in non-spatial units;

    storing entries for antenna coordinates in a data store, each entry associating a respective antenna coordinate with information about that antenna coordinate, the information including, for one or more of the entries, a Cartesian coordinate that maps to the respective antenna coordinate, the Cartesian coordinate belonging to a Cartesian coordinate system whose dimensions are denominated in non-spatial units; and

    in response to the antenna units receiving a new wireless packet, (i) generating a current antenna coordinate for the new wireless packet, (ii) accessing a matching entry in the data store by applying the current antenna coordinate as a set of lookup indices into the data store, the matching entry storing information about the current antenna coordinate, and (iii) providing a Cartesian coordinate stored in the matching entry as a source location of the new wireless packet,the method thereby identifying Cartesian coordinates of sources of wireless packets based on matching of antenna coordinates.

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