A centralized arbitration scheme for UHF band RFID readers

  • Authors:

  • Sung Woo Bae;Jun-Seok Park;Ha-Ryoung Oh;Yeong-Rak Seong

  • Affiliations:

  • Department of Electrical Engineering, Kookmin University, Seongbuk-Gu, Seoul, Korea;Department of Electrical Engineering, Kookmin University, Seongbuk-Gu, Seoul, Korea;Department of Electrical Engineering, Kookmin University, Seongbuk-Gu, Seoul, Korea;Department of Electrical Engineering, Kookmin University, Seongbuk-Gu, Seoul, Korea

  • Venue:
  • ICHIT'11 Proceedings of the 5th international conference on Convergence and hybrid information technology
  • Year:
  • 2011

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Abstract

When attempting to identify multiple tags, the reader may face up a simultaneous interfering transmission from transponders which may causes a collision as tags share the same communication channel. Also, reader collision may occur when neighboring readers use the same channel at the same time. This paper proposes the centralized arbitration scheme using a RFID-Arbiter. The RFID-Arbiter operates as a special tag in the air interface so that hardware of reader does not need to be modified. By the centralized arbitration scheme, readers that want to communicate with tags are allotted to operation at different times. For performance evaluation, the proposed centralized arbitration scheme is modeled and simulated by using discrete event system formalism.