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Overcoming EPC Class 1 Gen 2 RFID limitations with p-persistent CSMA

Authors:
Leonardo D. Sanchez-M.
Victor M. Ramos-R.

Keywords: RFID, EPC Class 1 Gen 2, p-persistent CSMA

Abstract:
Nowadays, Radio Frequency IDentification (RFID) is a widely spread technology used in a diverse set of applications. One of the main problems faced by RFID networks is tag collision. This occurs when two or more tags respond simultaneously to the RFID reader, causing errors and bringing retransmissions in the wireless channel, increasing the delay required to identify the whole set of tags in the coverage range of the reader. There are two standards for RFID tag identification: ISO 18000-7 and EPC Class 1 Gen 2. We propose in this paper a p-persistent CSMA mechanism for RFID tag identification; we also compare our mechanism with the EPC Class 1 Gen 2 as well as with a non-persistent CSMA approach that has been proposed in the literature. We show that the mechanism we propose provides a lower identification delay than the two other mechanisms. Furthermore, our mechanism uses less identification cycles than its non-persistent CSMA counterpart.

Pages: 88 to 92

Copyright: Copyright (c) IARIA, 2011

Publication date: October 23, 2011

Published in: conference

ISSN: 2163-9027

ISBN: 978-1-61208-166-3

Location: Barcelona, Spain

Dates: from October 23, 2011 to October 29, 2011