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Method and apparatus for locating a remote unit within a communication system

  • US 20030203738A1
  • Filed: 04/29/2002
  • Published: 10/30/2003
  • Est. Priority Date: 04/29/2002
  • Status: Active Grant
First Claim
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1. A method for locating a remote unit within a communication system, the method comprising the steps of:

  • transmitting a first message to a base station;

    determining a timing advance based on the first message;

    advancing or retarding transmission circuitry;

    transmitting a second message to the base station;

    determining a second timing advance based on the second message; and

    determining a location based on the first and the second timing advance;

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