Routing and wavelength assignment in all-optical networks
IEEE/ACM Transactions on Networking (TON)
Dynamic Lightpath Protection in WDM optical Networks Using Ant-based Mobile Agents
IAT '05 Proceedings of the IEEE/WIC/ACM International Conference on Intelligent Agent Technology
WDM Network Topologies-A Probabilistic Model
ADCOM '07 Proceedings of the 15th International Conference on Advanced Computing and Communications
Optical layer survivability: a services perspective
IEEE Communications Magazine
Dense wavelength division multiplexing networks: principles and applications
IEEE Journal on Selected Areas in Communications
Survivability in optical networks
IEEE Network: The Magazine of Global Internetworking
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This paper presents an overview of various existing network survivability techniques implemented in optical WDM networks and proposes an efficient network survivability approach. The proposed approach works on the principle of preplanned protection which adopts dynamic restoration strategy to improve the wavelength usages and call connection rate under single link failure scenario. The resiliency in the network is achieved through backup paths utilizing pre-provisioning at the time of connection establishment process and also by reserving wavelengths during the failure recovery time. The proposed approach has been analyzed and compared with the preplanned protection and dynamic restoration method through simulation to confirm an improvement in call acceptance ratio.