Partially synchronized multilateration/trilateration method and system for positional finding using RF
First Claim
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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Accused Products
Abstract
Systems and methods for determining a location of one or more user equipment (UE) in a wireless system can comprise receiving reference signals via a location management unit having two or more co-located channels, wherein the two or more co-located channels are tightly synchronized with each other and utilizing the received reference signals to calculate a location of at least one UE among the one or more UE. Embodiments include multichannel synchronization with a standard deviation of less than or equal 10 ns. Embodiments can include two LMUs, with each LMU having internal synchronization, or one LMU with tightly synchronized signals.
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Citations
24 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for determining a location of one or more user equipment (UE) in a wireless system, the method comprising:
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receiving reference signals via a first location management unit having 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; receiving reference signals via a second location management unit having two or more co-located channels; synchronizing timings of the co-located channels of the second location management unit based on the desired accuracy of the location for the wireless system; employing a multipath mitigation processor configured to receive and process the reference signals from the first location management unit and the second location management unit, wherein the multipath mitigation processor utilizes a high-resolution spectrum estimation analysis to reduce spatial ambiguity associated with the received reference signals of the first location management unit and the second location management unit, the high-resolution spectrum estimation including estimating a model size for a number of frequency components of the received reference signals of the first location management unit and the second location management unit and calculating the location of the at least one UE based on a distribution of a plurality of artificial frequencies of the frequency components; and utilizing the received reference signals from the first location management unit and the received reference signals from the second location management unit to calculate the location of at least one UE among the one or more UE. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification