Counting RFID tags efficiently and anonymously

  • Authors:
  • Hao Han;Bo Sheng;Chiu C. Tan;Qun Li;Weizhen Mao;Sanglu Lu

  • Affiliations:
  • College of William and Mary, Williamsburg, VA and State Key Laboratory of Novel Software Technology, Nanjing University, China;Northeastern University, Boston, MA;College of William and Mary, Williamsburg, VA;College of William and Mary, Williamsburg, VA;College of William and Mary, Williamsburg, VA;State Key Laboratory of Novel Software Technology, Nanjing University, China

  • Venue:
  • INFOCOM'10 Proceedings of the 29th conference on Information communications
  • Year:
  • 2010

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Abstract

Radio Frequency IDentification (RFID) technology has attracted much attention due to its variety of applications, e.g., inventory control and object tracking. One important problem in RFID systems is how to quickly estimate the number of distinct tags without reading each tag individually. This problem plays a crucial role in many real-time monitoring and privacy-preserving applications. In this paper, we present an efficient and anonymous scheme for tag population estimation. This scheme leverages the position of the first reply from a group of tags in a frame. Results from mathematical analysis and extensive simulation demonstrate that our scheme outperforms other protocols proposed in the previous work.