Shared protection in mesh WDM networks
IEEE Communications Magazine
Automatic protection switching for p-cycles in WDM networks
Optical Switching and Networking
Extending the p-cycle concept to path segment protection for span and node failure recovery
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
Hamiltonian p-cycles for fiber-level protection in semi-homogeneous homogeneous and optical networks
IEEE Network: The Magazine of Global Internetworking
Preplanned restoration of multicast demands in optical networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
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In high speed backbone networks, the survivability is a very important issue since the networks carry a lot of traffic. In this paper, we study the protection method with Hamiltonian Cycle in meshed survivable backbone networks, and proposed a new heuristic routing algorithm called Enhanced Hamiltonian Cycle Protection (EHCP) to tolerate the single failure. In EHCP, for each connection request the working path can be effectively selected based on the presented link-cost functions that consider the different affection for backup resources from on-cycle links and straddling links so that the backup resources on the protecting Hamiltonian Cycle can be reduced. The simulation results show that, compared with the conventional Hamiltonian Cycle Protection algorithm, EHCP can obtain significant improvement in resource utilization ratio.