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Probabilistic model for a positioning technique

  • US 20050128139A1
  • Filed: 11/30/2004
  • Published: 06/16/2005
  • Est. Priority Date: 05/31/2002
  • Status: Active Grant
First Claim
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1. A method for estimating a target device'"'"'s location, wherein the target device is operable to move in a wireless environment and to communicate with the wireless environment using signals each of which has at least one measurable signal value;

  • the method comprising;

    forming a plurality of submodels of the wireless environment, each submodel indicating a probability distribution for signal values at one or more locations in the wireless environment;

    combining the submodels to a probabilistic model of the wireless environment, the probabilistic model indicating a probability distribution for signal values at several locations in the wireless environment;

    making a set of observations of signal values in the wireless environment at the target device'"'"'s location; and

    estimating the target device'"'"'s location based on the probabilistic model and the set of observations.

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