NDLI: Performance analysis of FDL buffers: a heuristic approach with impatience and quantization

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Performance analysis of FDL buffers: a heuristic approach with impatience and quantization

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Performance analysis of FDL buffers: a heuristic approach with impatience and quantization

Content Provider	ACM Digital Library
Author	Laevens, K. Fiems, D. Rogiest, W. De Turck, K. Bruneel, H. Wittevrongel, S.
Abstract	For current backbone networks, the capacity limit is not fiber throughput (> 10 Tbit/s per fiber), but rather, switching speed. Optical switching (Optical Packet Switching, Optical Burst Switching, and others) provides a viable alternative, relying on Fiber Delay Lines (FDLs) for buffering. The main feature of such a buffer is the quantization of possible delays: only delays equal to the length of one of the FDLs can be realized. The impact of quantization on buffer performance is huge. A recent numerical procedure for single-wavelength buffers allows exact numerical evaluation of this impact, but does not allow for practical insight. Moreover, it lacks the potential of generalization, needed to evaluate the performance of buffers with multiple wavelengths at the output. Countering this, we applied a heuristic combination of two existing queueing models: one with quantization, and one with impatience. As we show in this paper, this combination yields accurate performance results. Key vantage of this heuristic is that it translates the FDL buffer problem into two well-known queueing problems, with accurate performance expressions available in literature, even for multiple wavelengths. This paper presents the heuristic in detail, together with several figures, comparing the heuristic's output to exact results.
Starting Page	177
Ending Page	184
Page Count	8
File Format	PDF
ISBN	9781450302128
DOI	10.1145/1837856.1837882
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2010-07-24
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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