System and method for 3-D position determination using RFID
First Claim
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1. An RFID device comprising:
- an RF transceiver; and
a memory configured to store information about a geographic location of the device.
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Abstract
Determining the location of wireless devices is improved by storing location information in RFID devices. As RFID devices come within range of each other they examine a confidence level associated with each others location information. The RFID device may update their location information based upon location information received from other RFID devices that have a higher confidence level.
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Citations
30 Claims
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1. An RFID device comprising:
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an RF transceiver; and
a memory configured to store information about a geographic location of the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A mobile device comprising:
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an RF transceiver;
an RFID reader;
a memory configured to store information about a location of the mobile device; and
a processor configured to update the information about the location of the mobile device. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A method of determining location of an RFID device, the method comprising:
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interrogating an external device;
determining a confidence level of location information stored within the external device, and updating location information of the RFID device based on location information of the external device if the confidence level of the external device location information is greater than a confidence level of the RFID device location information. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. An RFID device comprising:
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means for interrogating an external device;
means for determining a confidence level of location information stored within the external device, and means for updating location information of the RFID device based on location information of the external device if the confidence level of the external device location information is greater than a confidence level of the RFID device location information. - View Dependent Claims (29, 30)
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Specification