Lightpath Scheduling and Routing for Traffic Adaptation in WDM Networks
Journal of Optical Communications and Networking, Vol. 2, Issue 10, pp. 803-819 (2010)
http://dx.doi.org/10.1364/JOCN.2.000803
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Abstract
We study the benefits and trade-offs of using scheduled lightpaths for traffic adaptation. We propose a network planning model that allows lightpaths to slide within their desired timing windows with no penalty on the optimization objective and to slide beyond their desired timing windows with a decreasing tolerance level. Our model quantitatively measures the timing satisfactions or violations. We apply the Lagrangian relaxation and subgradient methods to the formulated optimization problem, with which great computational efficiency is demonstrated when compared with other existing algorithms. Our simulation results show how timing flexibility improves network resource utilization and reduces rejections.
© 2010 Optical Society of America
OCIS Codes
(060.4250) Fiber optics and optical communications : Networks
(060.4251) Fiber optics and optical communications : Networks, assignment and routing algorithms
(060.4254) Fiber optics and optical communications : Networks, combinatorial network design
(060.4256) Fiber optics and optical communications : Networks, network optimization
ToC Category:
Research Papers
History
Original Manuscript: April 13, 2010
Revised Manuscript: August 2, 2010
Manuscript Accepted: August 11, 2010
Published: September 29, 2010
Citation
James Yiming Zhang, Hussein Mouftah, Jing Wu, and Michel Savoie, "Lightpath Scheduling and Routing for Traffic Adaptation in WDM Networks," J. Opt. Commun. Netw. 2, 803-819 (2010)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-2-10-803
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