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Enhanced mobile location

  • US 8,355,737 B2
  • Filed: 03/20/2006
  • Issued: 01/15/2013
  • Est. Priority Date: 03/18/2005
  • Status: Active Grant
First Claim
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1. A system for locating a mobile radio terminal by obtaining a local path loss versus range model for a radio communications network comprising:

  • a processor;

    a memory in communication with the processor, wherein the memory includes non-transitory instructions stored therein to cause the processor to execute the steps of;

    obtaining an approximate location of a mobile radio terminal;

    obtaining a set of radio signal parameter measurements taken by the mobile radio terminal, the set including at least one path loss and corresponding range measurement;

    applying the at least one path loss and corresponding range measurement to a path loss versus range model to obtain a local path loss versus range model for the approximate location of the mobile radio terminal; and

    in the processor, calculating an updated location of the mobile radio terminal using the local path loss versus range model with at least one path loss measurement corresponding to the approximate location, wherein the updated location is more accurate than the approximate location.

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