Apparatus and method for determining the location of a mobile device using multiple wireless access points
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United States of America Patent
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Oct 31, 2017
Grant Date -
Aug 20, 2015
app pub date -
Oct 18, 2013
filing date -
Oct 19, 2012
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Abstract
A method and an apparatus are provided for determining the location of a mobile device using multiple wireless access points, each wireless access point comprising multiple antennas. The apparatus and method are particularly suited to location of a mobile device in an indoor environment, such as a building. The method includes receiving a communication signal from the mobile device at each of multiple antennas of said multiple wireless access points; for each wireless access point, determining angle-of-arrival information of the received communication signal at the wireless access point, based on a difference in phase of the received signal between different antennas; collecting, from each of the multiple wireless access points, the determined angle-of-arrival information for the received communication signal from the mobile device; and estimating the location of the mobile device from the collected angle-of-arrival information.
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