Array-based reader anti-collision scheme for highly efficient RFID network applications

Authors:
Nong-Kun Chen;Jiann-Liang Chen;Cheng-Chun Lee
Affiliations:
Department of Computer Science and Information Engineering, National Dong-Hwa University, Hualien, Taiwan;Department of Computer Science and Information Engineering, National Dong-Hwa University, Hualien, Taiwan;Department of Computer Science and Information Engineering, National Dong-Hwa University, Hualien, Taiwan
Venue:
Wireless Communications & Mobile Computing
Year:
2009

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Abstract

Radio frequency identification (RFID) is a technology for identifying objects by radio signal. The reader collision problem is caused by the interrogation zones overlap of multiple readers, and leading to incorrect and unreliable data. This study proposes an array-based reader anti-collision scheme (ARCS) for solving the reader-to-tag interference problem. This mechanism uses array and grouping techniques to schedule the active readers to reduce the read cycle (RC) time. The ‘RC’ and ‘collision ratio (CR)’ measures serve as performance indexes in the proposed scheme. From ‘RC’ comparison, the ARCS mechanism has the maximum improvement of 55 per cent as compared with the existing mechanisms. Furthermore, take ‘CR’ index, ARCS has the maximum improvement of 42 per cent as compared to the others. Copyright © 2008 John Wiley & Sons, Ltd.