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Partially synchronized multilateration/trilateration method and system for positional finding using RF

  • US 10,281,557 B2
  • Filed: 07/31/2015
  • Issued: 05/07/2019
  • Est. Priority Date: 12/15/2005
  • Status: Active Grant
First Claim
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1. A method for determining a location of one or more user equipment (UE) in a wireless system, the method comprising:

  • receiving reference signals from a UE among the one or more UEs via two or more co-located channels;

    synchronizing timings of the two or more co-located channels based on a desired accuracy of a location for the wireless system;

    employing a multipath mitigation processor configured to receive and process the received reference signals, wherein the multipath mitigation processor utilizes a high-resolution spectrum estimation analysis to reduce spatial ambiguity associated with the received reference signals, the high-resolution spectrum estimation including estimating a model size for a number of frequency components of the received reference signals and calculating the location of the UE based on a distribution of a plurality of artificial frequencies of the frequency components; and

    utilizing the received reference signals to calculate the location of the at least one UE among the one or more UEs.

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