System and method for 3-D position determination using RFID

Details System and method for 3-D position determination using RFID System and method for 3-D position determination using RFID

2005-05-03

2009-02-10

Nguyen, Tai T (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S572400, C340S572800, C340S539120, C340S539130, C342S042000, C342S044000, C342S045000

Reexamination Certificate

active

07489240

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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patent: 2005/0236479 (2005-10-01), Schmidtberg et al.
patent: 2006/0109106 (2006-05-01), Braun

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