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Title: Performance improvement methods for Burst-switched networks
Authors: Li, Chun Yin
Wai, Ping-kong Alexander
Li, On-kwok Victor
Subjects: Control overhead
Offset time
Optical burst switching
Issue Date: 1-Feb-2011
Publisher: Optical Society of America
Source: Journal of optical communications and networking, 1 Feb. 2011, v. 3, no. 2, p. 104-116.
Abstract: In this paper, we present a performance model of optical burst switching (OBS) that can explain the degradation of OBS throughput performance when the control packet processing time increases. We then use the proposed performance model to investigate three feasible methods to improve OBS performance without significantly increasing the implementation complexity: addition of simple fiber delay lines (FDLs), random extra offset time, and window-based channel scheduling (WBS). Additional FDLs can eliminate the negative impact caused by the variation of the offset time between control packets and data bursts. The random extra offset time approach does not require any additional hardware and computational capability in the nodes. If higher computational capability is available, WBS in general can provide better throughput improvement than that of random extra offset time when FDLs are used in the nodes to compensate the processing time. Simulation results show that a combination of the proposed methods can significantly improve OBS performance.
Rights: © 2011 Optical Society of America. This paper was published in Journal of Optical Communications and Networking and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Type: Journal/Magazine Article
DOI: 10.1364/JOCN.3.000104
ISSN: 1943-0620 (print)
1943-0639 (online)
Appears in Collections:EIE Journal/Magazine Articles

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