NDLI: An enhanced dynamic framed slotted ALOHA algorithm for RFID tag identification

Content Provider	IEEE Xplore Digital Library
Author	Su-Ryun Lee Sung-Don Joo Chae-Woo Lee
Copyright Year	2005
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Ajou Univ., Suwon, South Korea (Su-Ryun Lee)
Abstract	In RFID system, one of the problems that we must solve is the collision between tags which lowers the efficiency of the RFID system. One of the popular anti-collision algorithms is ALOHA-type algorithms, which are simple and shows good performance when the number of tags to read is small. However, they generally require exponentially increasing number of slots to identify the tags as the number of tag increases. In the paper, we propose a new anti-collision algorithm called enhanced dynamic framed slotted ALOHA (EDFSA) which estimates the number of unread tags first and adjusts the number of responding tags or the frame size to give the optimal system efficiency. As a result, in the proposed method, the number of slots to read the tags increases linearly as the the number of tags does. Simulation results show that the proposed algorithm improves the slot efficiency by 85/spl sim/100% compared to the conventional algorithms when the number of tags is 1000.
Starting Page	166
Ending Page	172
File Size	270599
Page Count	7
File Format	PDF
ISBN	0769523757
DOI	10.1109/MOBIQUITOUS.2005.13
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-07-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	RFID tags Technical Activities Guide -TAG Radiofrequency identification Frequency Heuristic algorithms Bandwidth ISO standards IEC standards Supply chains Banking
Content Type	Text
Resource Type	Article

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