Wireless-based positioning adjustments using a motion sensor
First Claim
1. A method for adjusting a wireless-based position estimate of a mobile station using a relative motion sensor, comprising:
- estimating a position of a mobile station based upon wireless signal measurements;
detecting a displacement of the mobile station using the relative motion sensor;
adjusting an estimated processing delay of a wireless access point using the detected displacement; and
refining the estimated position of the mobile station using the adjusted processing delay.
1 Assignment
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Accused Products
Abstract
Apparatuses and methods for adjusting wireless-derived positions of a mobile station using a motion sensor are presented. One method includes estimating a position of a mobile station based upon wireless signal measurements and measuring a movement of the mobile station using a relative motion sensor. The method further includes detecting a displacement of the mobile station based upon the measured movement, determining that the displacement is below a threshold and then adjusting the estimated position of the mobile station using information from the relative motion sensor. An apparatus includes a wireless transceiver, a relative motion sensor, a processor coupled to the wireless transceiver and the relative motion sensor, and a memory coupled to the processor. The memory stores executable instructions and data for causing the processor to execute methods for adjusting wireless-derived positions using a motion sensor.
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Citations
4 Claims
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1. A method for adjusting a wireless-based position estimate of a mobile station using a relative motion sensor, comprising:
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estimating a position of a mobile station based upon wireless signal measurements; detecting a displacement of the mobile station using the relative motion sensor; adjusting an estimated processing delay of a wireless access point using the detected displacement; and refining the estimated position of the mobile station using the adjusted processing delay.
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2. An apparatus for adjusting a wireless-based position estimate of a mobile station using a relative motion sensor, comprising:
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a wireless transceiver; a relative motion sensor; a processor coupled to the wireless transceiver and the relative motion sensor; and a memory coupled to the processor, wherein the memory stores executable instructions and data for causing the processor to estimate a position of a mobile station based upon wireless signal measurements, detect a displacement of the mobile station using a relative motion sensor, adjust an estimated processing delay of a wireless access point using the detected displacement, and refine the estimated position of the mobile station using the adjusted processing delay.
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3. An apparatus for adjusting a wireless-based position estimate of a mobile station using a relative motion sensor, comprising:
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means for estimating a position of a mobile station based upon wireless signal measurements; means for detecting a displacement of the mobile station using the relative motion sensor; means for adjusting an estimated processing delay of a wireless access point using the detected displacement; and means for refining the estimated position of the mobile station using the adjusted processing delay.
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4. A nontransitory machine-readable medium comprising instructions, which, when executed by a machine, cause the machine to perform operations, the instructions comprising:
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instructions to estimate a position of a mobile station based upon wireless signal measurements; instructions to detect a displacement of the mobile station using a relative motion sensor; instructions to adjust an estimated processing delay of a wireless access point using the detected displacement; and instructions to refine the estimated position of the mobile station using the adjusted processing delay.
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Specification