NDLI: Scheduling algorithms for shared fiber-delay-line optical packet switches

Content Provider	IEEE Xplore Digital Library
Author	Liew, S.Y. Gang Hu Chao, H.J.
Copyright Year	2004
Description	Author affiliation: Fac. of ICT, Univ. Tunku Abdul Rahman, Selangor, Malaysia (Liew, S.Y.)
Abstract	Optical packets may arrive at an optical switch in an uncoordinated fashion. Therefore, fiber delay lines (FDL) are needed to buffer packets when contention occurs. There have been several optical-buffered switch architectures and FDL assignment algorithms proposed in the literature. However, most of them either have high implementation complexity, or fail to schedule departure time for delayed packets. In this paper, we study the scheduling algorithms for the single-stage shared-FDL optical packet switch. We propose two new FDL assignment algorithms: the sequential FDL assignment (SEFA) algorithm and the multi-cell FDL assignment (MUFA) algorithm. Our algorithms can make resource reservation so as to schedule departure time for packets. Owing to FDL and/or output-port conflicts, the packets that fail to be scheduled are discarded before entering the switch. We show by simulation that with these algorithms, the optical-buffered switch can achieve a loss rate of /spl sim/10/sup -7/ even at the load of 0.9.
Starting Page	1850
Ending Page	1856
File Size	782744
Page Count	7
File Format	PDF
ISBN	0780387945
DOI	10.1109/GLOCOM.2004.1378309
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-11-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Scheduling algorithm Optical fibers Optical packet switching Computer aided software engineering Optical switches Optical buffering High speed optical techniques Optical devices Delay lines Chaos
Content Type	Text
Resource Type	Article

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