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Optimized anti-collision techniques in RFID systems

RFID systems are widely used in many diverse applications at present. A development of anti-collision technique is one of the most important issues for tag identification. In this paper we present an analysis for computing the optimal parameter for tag-collision resolution problem based on the EPCglobal RFID protocol [6]. A Q parameter, which controls the identification process, is assigned to tags. We developed an approach to evaluate the tag identification time, given Q parameter. From this result, one can derive the optimal Q to the corresponding tag set size. The improvement obtained by using the optimal Q parameter is shown by numerical comparisons with other approaches.