NDLI: An application dependent medium access protocol for active RFID using dynamic tuning of the back-off algorithm

Content Provider	IEEE Xplore Digital Library
Author	Nilsson, B. Bengtsson, L. Svensson, B.
Copyright Year	2009
Description	Author affiliation: Centre for Research on Embedded Systems (CERES), Halmstad University, Sweden (Nilsson, B.; Bengtsson, L.; Svensson, B.)
Abstract	Active Radio Frequency Identification (A-RFID) is a technology where the tags (transponders) carry an on-board energy source for powering the radio, processor circuits, and sensors. Besides offering longer working distance between RFID-reader and tag than passive RFID, this also enables the tags to do sensor measurements, calculations and storage even when no RFID-reader is in the vicinity of the tags. In this paper we introduce a medium access data communication protocol which dynamically adjusts its back-off algorithm to best suit the actual active RFID application at hand. Based on a simulation study of the effect on tag energy cost, readout delay, and message throughput incurred by some typical back-off algorithms in a CSMA/CA (Carrier Sense Multiple Access / Collision Avoidance) A-RFID protocol, we conclude that by dynamic tuning of the initial contention window size and back-off interval coefficient, tag energy consumption and read-out delay can be significantly lowered. We also present specific guidelines on how parameters should be selected under various application constraints (viz. maximum readout delay; and the number of tags passing).
Starting Page	72
Ending Page	79
File Size	728221
Page Count	8
File Format	PDF
ISBN	9781424433377
DOI	10.1109/RFID.2009.4911186
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-04-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Active RFID tags Circuit optimization Costs Delay effects Access protocols Transponders Passive RFID tags Tuning back-off protocol Data communication Active RFID Radiofrequency identification algorithm
Content Type	Text
Resource Type	Article

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