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Sensors 2009, 9(2), 845-858; doi:10.3390/s90200845

Enhanced TDMA Based Anti-Collision Algorithm with a Dynamic Frame Size Adjustment Strategy for Mobile RFID Readers

School of Computer and Information Engineering, Inha University, 253 Yonghyun-dong, Nam-gu, Incheon, 402-751, Korea
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Received: 14 October 2008 / Revised: 29 December 2008 / Accepted: 5 February 2009 / Published: 6 February 2009
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Abstract

In the fields of production, manufacturing and supply chain management, Radio Frequency Identification (RFID) is regarded as one of the most important technologies. Nowadays, Mobile RFID, which is often installed in carts or forklift trucks, is increasingly being applied to the search for and checkout of items in warehouses, supermarkets, libraries and other industrial fields. In using Mobile RFID, since the readers are continuously moving, they can interfere with each other when they attempt to read the tags. In this study, we suggest a Time Division Multiple Access (TDMA) based anti-collision algorithm for Mobile RFID readers. Our algorithm automatically adjusts the frame size of each reader without using manual parameters by adopting the dynamic frame size adjustment strategy when collisions occur at a reader. Through experiments on a simulated environment for Mobile RFID readers, we show that the proposed method improves the number of successful transmissions by about 228% on average, compared with Colorwave, a representative TDMA based anti-collision algorithm. View Full-Text
Keywords: Mobile RFID reader; Anti-collision algorithm; Reader collision problem Mobile RFID reader; Anti-collision algorithm; Reader collision problem
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Shin, K.C.; Park, S.B.; Jo, G.S. Enhanced TDMA Based Anti-Collision Algorithm with a Dynamic Frame Size Adjustment Strategy for Mobile RFID Readers. Sensors 2009, 9, 845-858.

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