Journal of information and communication convergence engineering

  • 제8권5호
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  • Pages.519-523
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  • 2010
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  • 2234-8255(pISSN)
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  • 2234-8883(eISSN)
한국정보통신학회 (The Korea Institute of Information and Commucation Engineering)
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Initial Slot-Count Selection Scheme with Tag Number Estimation in Gen-2 RFID System

  • Lim, In-Taek (Department of Embedded IT, Pusan University of Foreign Studies) ;
  • Ryu, Young-Tae (Department of e-Business, Pusan University of Foreign Studies)
  • 투고 : 2010.08.26
  • 심사 : 2010.09.25
  • 발행 : 2010.10.30
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초록

In Gen-2 RFID system, the initial value of $Q_{fp}$, which is the slot-count parameter of Q-algorithm, is not defined in the standard. In this case, if the number of tags within the reader's identification range is small and we let the initial $Q_{fp}$ be large, the number of empty slot will be large. On the other hand, if we let the initial $Q_{fp}$ be small in spite of many tags, almost all the slots will be collided. As a result, the performance will be declined because the frame size does not converge to the optimal point quickly during the query round. In this paper, we propose a scheme to allocate the optimal initial $Q_{fp}$ through the tag number estimation before the query round begins. Through computer simulations, it is demonstrated that the proposed scheme achieves more stable performance than Gen-2 Q-algorithm.

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참고문헌

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