Method to Dynamically Adjust Assistance Data for Improved Indoor Positioning Performance
First Claim
1. A method for updating assistance data in an indoor navigation system, the method comprising:
- receiving ranging measurements from a reference positioning terminal;
computing an estimated location of the reference positioning terminal based on the received ranging measurements;
receiving information associated with a high-confidence location of the reference positioning terminal;
determining that a difference between the estimated location and the high-confidence location of the reference positioning terminal is greater than a predetermined threshold; and
sending an assistance data update to a server associated with the indoor navigation system, the assistance data update including an update to assistance data based on the received ranging measurements of the reference positioning terminal.
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Accused Products
Abstract
Methods and systems are presented for updating assistance data in an indoor navigation system. In some embodiments, a method includes receiving ranging measurements from a reference positioning terminal, computing an estimated location of the reference positioning terminal based on the received ranging measurements, receiving information associated with a high-confidence location of the reference positioning terminal, determining that a difference between the estimated location and the high-confidence location of the reference positioning terminal is greater than a predetermined threshold, and sending an assistance data update to a server associated with the indoor navigation system, the assistance data update including an update to assistance data based on the received ranging measurements of the reference positioning terminal.
32 Citations
24 Claims
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1. A method for updating assistance data in an indoor navigation system, the method comprising:
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receiving ranging measurements from a reference positioning terminal; computing an estimated location of the reference positioning terminal based on the received ranging measurements; receiving information associated with a high-confidence location of the reference positioning terminal; determining that a difference between the estimated location and the high-confidence location of the reference positioning terminal is greater than a predetermined threshold; and sending an assistance data update to a server associated with the indoor navigation system, the assistance data update including an update to assistance data based on the received ranging measurements of the reference positioning terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An access point, comprising:
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a wireless transceiver configured to; receive ranging measurements from a reference positioning terminal; and receive information associated with a high-confidence location of the reference positioning terminal; and a processor configured to; compute an estimated location of the reference positioning terminal based on the received ranging measurements; and determine that a difference between the estimated location and the high-confidence location of the reference positioning terminal is greater than a predetermined threshold; and wherein the wireless transceiver is configured to send an assistance data update to a server associated with an indoor navigation system, the assistance data update including an update to assistance data based on the received ranging measurements of the reference positioning terminal. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A system for updating assistance data in an indoor navigation system, comprising:
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means for receiving ranging measurements from a reference positioning terminal; means for computing an estimated location of the reference positioning terminal based on the received ranging measurements; means for receiving information associated with a high-confidence location of the reference positioning terminal; means for determining that a difference between the estimated location and the high-confidence location of the reference positioning terminal is greater than a predetermined threshold; and means for sending an assistance data update to a server associated with the indoor navigation system, the assistance data update including an update to the assistance data based on the received ranging measurements. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A non-transitory processor-readable medium comprising processor-readable instructions configured to cause a processor to update assistance data in an indoor navigation system, comprising:
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code to receive ranging measurements from a reference positioning terminal; code to receive information associated with a high-confidence location of the reference positioning terminal; code to compute an estimated location of the reference positioning terminal based on the received ranging measurements; code to determine that a difference between the estimated location and the high-confidence location of the reference positioning terminal is greater than a predetermined threshold; and code to send an assistance data update to a server associated with the indoor navigation system, the assistance data update including an update to the assistance data based on the received ranging measurements of the reference positioning terminal. - View Dependent Claims (24)
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Specification