1 November 2009 New protection scheme based on Hamiltonian cycle for different-level demands in fault-tolerant wavelength-division-multiplexing networks
Lei Guo, Jiannong Cao, Xingwei Wang, Weigang Hou, Yan Li, Chongshan Wang
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Abstract
As a special case of p cycles, a Hamiltonian cycle protection scheme is proposed to achieve fast failure restoration and simple management in fault-tolerant networks. We extend the idea of a Hamiltonian cycle protection scheme to fault-tolerant wavelength-division-multiplexing (WDM) optical fiber networks, and propose a new Heuristic Hamiltonian cycle protection algorithm (HHCPA) to tolerate the single-fiber failure. In the HHCPA, we consider the idea of differentiated protection for different-level demands, i.e., high-level demands with protection requirements and low-level demands without protection requirements. We also develop the link-cost function to achieve the load balancing and proper link selection in computing the light paths for each demand to effectively reduce the backup wavelength consumption. Simulation results show that, compared to conventional algorithm, the HHCPA can obtain significant performance improvement in resource utilization ratio and blocking probability.
©(2009) Society of Photo-Optical Instrumentation Engineers (SPIE)
Lei Guo, Jiannong Cao, Xingwei Wang, Weigang Hou, Yan Li, and Chongshan Wang "New protection scheme based on Hamiltonian cycle for different-level demands in fault-tolerant wavelength-division-multiplexing networks," Optical Engineering 48(11), 115001 (1 November 2009). https://doi.org/10.1117/1.3258347
Published: 1 November 2009
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Cited by 1 scholarly publication.
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KEYWORDS
Optical networks

Wavelength division multiplexing

Chromium

Optical engineering

Computer simulations

Optical fibers

Algorithm development

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