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METHOD, APPARATUS OR SOFTWARE FOR LOCATING A MOBILE NODE RELATIVE TO ONE OR MORE OTHER NODES

  • US 20090215470A1
  • Filed: 02/26/2009
  • Published: 08/27/2009
  • Est. Priority Date: 02/27/2008
  • Status: Abandoned Application
First Claim
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1. A method for locating a mobile node relative to one or more other nodes, said method comprising the steps of:

  • receiving data indicating the detection at a first node of signals transmitted from one or more second nodes, each said second node having a known location;

    determining the signal coverage area of each detected second node;

    identifying one or more third nodes from which no signal is received at the first node, each having a known location and each having a signal coverage area coincident with said signal coverage area of one or more of said detected second nodes;

    determining a plausible area for the location of said first node from the combination of the signal coverage areas for each detected second node and the exclusion of the signal coverage areas of each identified third node; and

    calculating the center of said plausible area and locating said first node at said center.

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