Parallel Response Ternary Query Tree for RFID Tag Anti-Collision

DOI: 10.4236/jcc.2015.35009   PDF   HTML   XML   2,936 Downloads   3,574 Views   Citations

Abstract

A tag-collision (or missed reads) in RFID system (Radio Frequency Identification) system degrades the identification efficiency. The so-called tag collision is that a reader cannot identify a tag when more than one tags respond to a reader at the same time. There are some major anti-collision protocols on resolving tag collision, e.g., ALOHA-based protocol, binary tree protocol, and Query Tree (QT) protocol. Up to date, most tag anti-collision protocols are QT protocols. QT protocols are categorized into M-ary query tree (QT). In the previous literature, choosing M = 3 (i.e., a ternary QT (TQT)) was proven to have the optimum performance for tag identification. Recently, Yeh et al. used parallel response approach to reduce the number of collisions. In this paper, we combine the partial response and TQT to propose an effective parallel response TQT (PRTQT) protocol. Simulation results reveal that our PRTQT outperforms Yeh et al.’s protocol and TQT protocol.

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Yang, C. , Cai, S. and Sun, L. (2015) Parallel Response Ternary Query Tree for RFID Tag Anti-Collision. Journal of Computer and Communications, 3, 72-79. doi: 10.4236/jcc.2015.35009.

Conflicts of Interest

The authors declare no conflicts of interest.

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