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A tag-collision problem (or missed reads) in Radio Frequency Identification (RFID) system is the event that a reader cannot identify the tag if many tags respond to a reader at the same time. The so-called M-ary (M=2, 4, 8, ...) query tree protocols were proposed for tag collision arbitration. Mathys et al. showed that ternary (M=3) query tree will bring about the optimum performance for tag identification...
A so-called tag-collision problem (or missed reads) in Radio Frequency Identification (RFID) system is the event that a reader cannot identify the tag if many tags respond to a reader at the same time. In this paper, we propose an adaptive query tree (AQT) protocols that combine the multiple M-ary trees. The large M reduces collisions, while the small M avoids the unnecessary inquiries. Our AQT protocol...
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