Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/21420
Title: New protection scheme based on Hamiltonian cycle for different-level demands in fault-tolerant wavelength-division-multiplexing networks
Authors: Guo, L
Cao, J 
Wang, X
Hou, W
Li, Y
Wang, C
Keywords: Different-level demands
Fault tolerant
Hamiltonian cycle protection
Optical fiber networks
Single-fiber failure
Wavelength-division-multiplexing
Issue Date: 2009
Publisher: SPIE-International Society for Optical Engineering
Source: Optical engineering, 2009, v. 48, no. 11, 115001 How to cite?
Journal: Optical engineering 
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.
URI: http://hdl.handle.net/10397/21420
ISSN: 0091-3286
EISSN: 1560-2303
DOI: 10.1117/1.3258347
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