Estimating the Location of a Wireless Terminal Based on Non-Uniform Probabilities of Movement
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United States of America Patent
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Aug 14, 2007
Grant Date -
Oct 26, 2006
app pub date -
May 22, 2006
filing date -
Sep 22, 1998
priority date (Note) -
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Abstract
A technique for estimating the location of a wireless terminal at an unknown location in a geographic region is disclosed. The technique is based on the recognition that there are traits of electromagnetic signals that are dependent on topography, the receiver, the location of the transmitter, and other factors. For example, if a particular radio station is known to be received strongly at a first location and weakly at a second location, and a given wireless terminal at an unknown location is receiving the radio station weakly, it is more likely that the wireless terminal is at the second location than at the first location.
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