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Method and system of positioning

  • US 7,486,233 B2
  • Filed: 09/03/2003
  • Issued: 02/03/2009
  • Est. Priority Date: 09/03/2003
  • Status: Active Grant
First Claim
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1. A method of positioning a radio transmitter, comprising the steps of:

  • determining a distance to a receiver of known position according to a parameter reflecting propagation delay time;

    determining direction from the receiver to the transmitter from a respective parameter reflecting received signal level in a cell/sector where the transmitter is camping or being served and a signal level in one or more co-sited cells/sectors different from the cell/sector where the transmitter is camping or being served, wherein said direction is determined by forming a respective linear scale ratio of or dB-scale differences between at least one or more neighbor cells/sectors received level and a received level of the cell/sector where the transmitter is camping or being served, the received levels being related to the same site.

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