Hybrid blocking algorithm for identification of overlapping staying tags between multiple neighboring readers in RFID systems

Yu Min Hu, Iang Chong Chang, Jung-Shian Li

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Many algorithms have been proposed for avoiding tag collisions in radio-frequency identification (RFID) systems. However, most of these algorithms consider only a single reader in the current frame. Real-world Radio Frequency Identification systems typically contain multiple readers, and the interrogation zones of neighboring readers often overlap. This situation damages the performance of algorithms considering staying tags and each reader will ignore the overlapping staying tags due to counter states reset by other readers in the next frame. As a result, the efficiency of the tag identification process in the intersection region is seriously degraded. Accordingly, this paper analyzes the performance of three existing binary tree-based anticollision algorithms in detecting overlapping staying tags and then proposes a new hybrid blocking algorithm (HBA) to alleviate the overlapping staying tag problem. The simulation results show that the proposed HBA scheme provides a better identification performance than existing schemes, particularly, in dense RFID systems.

Original languageEnglish
Article number7059224
Pages (from-to)4076-4085
Number of pages10
JournalIEEE Sensors Journal
Volume15
Issue number7
DOIs
Publication statusPublished - 2015 Jul 1

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Electrical and Electronic Engineering

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