Location tracking using directional antennas combined with signal strength measurements
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United States of America Patent
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Dec 29, 2009
Grant Date -
Jul 21, 2005
app pub date -
Dec 30, 2003
filing date -
Dec 30, 2003
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Abstract
A wireless local area network has mobile units which are provided with radios for transmitting and receiving data communications messages between the mobile units and fixed access points. The mobile units are located using signal strength for radio communications between the mobile units and the access points. At least some of the access points are provided with antennas having antenna patterns with selected pattern shape for enhancing location of the mobile units.
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