NDLI: Dynamic Versus Static Wavelength-Routed Optical Networks

Content Provider	IEEE Xplore Digital Library
Author	Zapata-Beghelli, A. Zapata-Beghelli, A. Bayvel, P.
Copyright Year	1983
Abstract	It is widely believed that dynamic operation of wavelength-routed optical networks will help overcome the inefficiencies of static allocation in terms of wavelength utilization. In this paper, this hypothesis is reviewed. The wavelength requirements of dynamic wavelength-routed optical networks are quantified and compared to static routing. To do so, new analytical and algorithmic lower bounds for the wavelength requirements of dynamic networks are proposed. They are used to evaluate the optimality of the already proposed algorithms whose wavelength requirements are quantified - by means of simulation- with and without the wavelength continuity constraint, as well as for uniform and nonuniform traffic demand. Results show that, without wavelength conversion capability, the benefit of dynamic wavelength-routed optical networks is not significant: lower wavelengths requirements than static networks are achieved only at low traffic loads (< 0.3 - 0.4). In wavelength convertible networks instead, dynamic operation leads to lower wavelength requirements than static operation over a wide traffic load range (< 0.7 - 0.8), making dynamic operation attractive in this type of network. Under nonuniform traffic it was found that dynamic operation achieves slightly higher wavelength savings than in the uniform traffic case. But the savings were not high enough as to impact on results of the uniform traffic case. These results can aid network operators in the design and optimization of optical WDM networks.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	3403
Ending Page	3415
Page Count	13
File Size	1087678
File Format	PDF
ISSN	07338724
Volume Number	26
Issue Number	20
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical fiber networks Telecommunication traffic Optical wavelength conversion WDM networks Bandwidth Resource management Wavelength division multiplexing Wavelength routing Algorithm design and analysis Traffic control wavelength requirements Dynamic WDM networks lightpath allocation algorithms nonuniform traffic demand optical burst switching static WDM networks uniform traffic demand
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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