Estimating the location of a wireless terminal in wireless telecommunications systems that comprise distributed and/or repeater antennas
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United States of America Patent
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Dec 12, 2017
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N/A
app pub date -
Aug 12, 2014
filing date -
Aug 30, 2012
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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 location-dependent traits of electromagnetic signals. In environments where multiple antennas are radiating the same signal, as in the case of distributed antennas or host-repeater configurations, one or more possible locations of the wireless terminal can be designated as improbable based on i) a measure of the propagation delay of a signal traveling between a) a base station and b) the wireless terminal or an infrastructure antenna, or ii) the maximum distance at which a signal is detectable by the wireless terminal. Additionally, the applicable set of values for the location-dependent traits is selected based on similar criteria.
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