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;
measuring a movement of the mobile station using the relative motion sensor;
detecting a displacement of the mobile station based upon the measured movement;
determining that the displacement is below a threshold; and
adjusting the estimated position of the mobile station using information from the relative motion sensor.
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
48 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; measuring a movement of the mobile station using the relative motion sensor; detecting a displacement of the mobile station based upon the measured movement; determining that the displacement is below a threshold; and adjusting the estimated position of the mobile station using information from the relative motion sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. 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 the mobile station based upon measurements of wireless signals received by the wireless transceiver, determine that the mobile station is moving based upon information provided by the relative motion sensor, calculate a displacement of the mobile station based upon the information provided by the relative motion sensor, determine that the displacement is below a threshold, and adjust the estimated position of the mobile station using the information from the relative motion sensor. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A 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 measure a movement of the mobile station using a relative motion sensor; instructions to detect a displacement of the mobile station based upon the measured movement; instructions to determine that the displacement is below a threshold; and instructions to adjust the estimated position of the mobile station using information from the relative motion sensor. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. 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 measuring a movement of the mobile station using the relative motion sensor; means for detecting a displacement of the mobile station based upon the measured movement; means for determining that the displacement is below a threshold; and means for adjusting the estimated position of the mobile station using information from the relative motion sensor. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. 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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46. 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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47. 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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48. A 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