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http://dx.doi.org/10.6109/jkiice.2010.14.5.1133

EPCglobal Class-1 Gen-2 Anti-collision Algorithm with Tag Number Estimation Scheme  

Lim, In-Taek (부산외국어대학교 임베디드IT학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.14, no.5, 2010 , pp. 1133-1138 More about this Journal
Abstract
In the anti-collision scheme proposed by EPCglobal Class-1 Gen-2 standard, the frame size for a query round is determined by Q-algorithm. In the Q-algorithm, the reader calculates a frame size without estimating the number of tags in it's identification range. It uses only the slot status. Therefore, Q-algorithm has advantage that the reader's algorithm is simpler than other algorithms. However, it cannot allocate an optimized frame size because it does not consider the number of tags. Also, the conventional Q-algorithm does not define an optimized parameter value C for adjusting the frame size. In this paper, we propose a modified Q-algorithm and evaluate the performance with computer simulations. The proposed Q-algorithm estimates the number of tags at every query round, and determines the parameter value C based on the estimated number of tags.
Keywords
RFID; Tag number estimation; Anti-collision algorithm; EPCglobal Class-1 Gen-2; Q-Algorithm;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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