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A Fast Tag Prediction Algorithm using Extra Bit in RFID System

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2008, 13(5), pp.255-262
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science

Baek,Deuk-Hwa 1 Kim Sung soo 2 안광선 2

1창원문성대학
2경북대학교

Accredited

ABSTRACT

RFID(Radio Frequency IDentification) is a technology that automatically identifies objects containing the electronic tags by using radio frequency. In RFID system, the reader needs the anti collision algorithm for fast identifying all of the tags in the interrogation zone. This paper proposes the tree based TPAE(Tag Prediction Algorithm using Extra bit) algorithm to arbitrate the tag collision. The proposed algorithm can identify tags without identifying all the bits in the tag ID. The reader uses the extra bit which is added to the tag ID and if there are two collided bits or multiple collided bits, it checks the extra bit and grasps the tag IDs concurrently. In the experiment, the proposed algorithm had about 50% less query iterations than query tree algorithm and binary search algorithm regardless of the number of tags and tag ID lengths.

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