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Mobile geolocation

  • US 9,907,048 B2
  • Filed: 09/01/2016
  • Issued: 02/27/2018
  • Est. Priority Date: 12/18/2012
  • Status: Active Grant
First Claim
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1. A method comprising:

  • obtaining, by a device, a signature associated with a mobile communication unit,the signature including identification information of the mobile communication unit, non-radio frequency control information, and a first timestamp,the signature not including location information,identifying, by the device, a first reference signature in a reference signature database based on the identification information,the first reference signature including first location information, a second timestamp indicating a time before the first timestamp, and radio frequency information,identifying, by the device, a second reference signature in the reference signature database based on the identification information,the second reference signature including second location information, a third timestamp indicating a time after the first timestamp, and radio frequency information,interpolating, by the device, the first location information from the first reference signature and the second location information from the second reference signature to provide a location estimate associated with the signature,creating, by the device, a third reference signature by combining information identifying the location estimate and at least a part of the signature,the third reference signature being for use in geolocation in a wireless communication system.

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