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Method and apparatus for detecting excess delay in a communication signal

  • US 20030054832A1
  • Filed: 09/14/2001
  • Published: 03/20/2003
  • Est. Priority Date: 09/14/2001
  • Status: Active Grant
First Claim
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1. A method of determining location of a mobile unit, the method comprising:

  • receiving signals from at least two base stations;

    determining a time difference of arrival between the received signals;

    estimating a lower bound of excess delay in accordance with the time of arrival of the signals and known distances between the base stations; and

    estimating a location of the mobile unit in accordance with the estimated lower bound of excess delay and the time difference of arrival between the received signals.

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