Self positioning of a wireless station
First Claim
Patent Images
1. A system comprising:
- one or more location aware stations, each having a known location;
a location unaware access point in wireless communication with the one or more location aware stations, the location unaware access point having an unknown location, wherein the location unaware access point includes a non-transitory computer readable medium that store instructions, which when executed, cause the location unaware access point to;
determine a coarse location estimate for the location unaware access point based on one or more known locations of the one or more location aware stations;
refine the coarse location estimate based on range measurement data obtained from the one or more location aware stations over one or more time periods until the refined coarse location estimate meets an error tolerance; and
use the refined coarse location estimate as a determined location of the location unaware access point.
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Abstract
A self-positioning mechanism is provided that determines and tracks the position of an access point in real time. A location unaware access point determines its location from the locations of location aware stations. The location is determined based on a predicted estimate which is updated based on measured values of the locations of the location aware stations over a time period. The movement of the location is then tracked based on the differences between range measurements of the location aware stations.
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Citations
21 Claims
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1. A system comprising:
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one or more location aware stations, each having a known location; a location unaware access point in wireless communication with the one or more location aware stations, the location unaware access point having an unknown location, wherein the location unaware access point includes a non-transitory computer readable medium that store instructions, which when executed, cause the location unaware access point to; determine a coarse location estimate for the location unaware access point based on one or more known locations of the one or more location aware stations; refine the coarse location estimate based on range measurement data obtained from the one or more location aware stations over one or more time periods until the refined coarse location estimate meets an error tolerance; and use the refined coarse location estimate as a determined location of the location unaware access point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An access point comprising:
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a wireless receiver for receiving location and measurement data from one or more location aware stations; and a processor coupled to the wireless receiver, wherein the processor is configured to iteratively determine location estimates of the access point over a plurality of time steps based on the location and measurement data received from the one or more location aware stations, wherein the processor determines a location of the access point based on successive location estimates differing by less than a threshold. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification