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22 September 2000 Optical layer survivability: single service-class case
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This paper considers capacity provisioning for service and restoration in a WDM optical network which provides lightpaths to higher layer networks. We develop a framework for jointly assigning wavelengths to service and restoration paths for all failures. For various types of path-based and link-based restoration methods, the problem is reduced to a vertex coloring problem in a single graph. Using this framework, we present routing and wavelength assignment algorithms for service and restoration with varying capacity/restoration time tradeoffs, and evaluate their performance through simulations. We also evaluate the difference in wavelength requirement under on-line incremental traffic and off-line traffic based on the properties of the conflict graph.
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Goekhan Sahin and Murat Azizoglu "Optical layer survivability: single service-class case", Proc. SPIE 4233, OptiComm 2000: Optical Networking and Communications, (22 September 2000);

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