DISTRIBUTED METHOD AND SYSTEM FOR CALIBRATING THE POSITION OF A MOBILE DEVICE
First Claim
1. A method of determining a position of a mobile device, the method comprising:
- receiving positioning assistance data from a short-range position reference device, the positioning assistance data comprising a position of the position reference device; and
at the mobile device, setting the position of the mobile station to the location of the position reference device.
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Accused Products
Abstract
A method and system is described where a plurality of position reference devices use short-range wireless communication protocols to transmit positioning assistance data to nearby mobile devices, and the mobile devices use the assistance data to re-calibrate their positioning systems. In some embodiments, mobile device includes an accelerometer and the accelerometer measurements are used to calculate an updated velocity of the mobile device and an updated position of the mobile device based on the accelerometer measurements and previous velocity and position of the mobile device. The short-range communication methods include NFC, RFID, Bluetooth®, short-range 802.11, Wi-Fi Direct, and high frequency focused beams such as 60 GHz. The position reference devices are passive or active NFC tags, passive or active RFID tags, other devices that include such tags as their components, Bluetooth®-enabled devices, 60 GHz-enabled devices, and 802.11 access points that can lower their transmit power.
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Citations
24 Claims
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1. A method of determining a position of a mobile device, the method comprising:
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receiving positioning assistance data from a short-range position reference device, the positioning assistance data comprising a position of the position reference device; and at the mobile device, setting the position of the mobile station to the location of the position reference device. - View Dependent Claims (2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 14, 15, 16)
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7-8. -8. (canceled)
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17. (canceled)
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18. A non-transitory machine readable medium storing a program for determining a position of a mobile device, the program executable by at least one processing unit of the mobile device, the program comprising sets of instructions for:
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receiving positioning assistance data from a short-range position reference device, the positioning assistance data comprising a position of the position reference device; and setting the position of the mobile station to the location of the position reference device. - View Dependent Claims (19, 20, 21, 22, 23)
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24. (canceled)
Specification