Redundant trees for preplanned recovery in arbitrary vertex-redundant or edge-redundant graphs
IEEE/ACM Transactions on Networking (TON)
IEEE/ACM Transactions on Networking (TON)
Fast optical layer mesh protection using pre-cross-connected trails
IEEE/ACM Transactions on Networking (TON)
IEEE/ACM Transactions on Networking (TON)
Dual-link failure resiliency through backup link mutual exclusion
IEEE/ACM Transactions on Networking (TON)
Reliability assessment of optical p-cycles
IEEE/ACM Transactions on Networking (TON)
Differentiated quality of service in survivable WDM mesh networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
A partial-protection approach using multipath provisioning
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
A resilient transparent optical network design with a pre-configured extended-tree scheme
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
ICCNMC'05 Proceedings of the Third international conference on Networking and Mobile Computing
Optical layer survivability: a services perspective
IEEE Communications Magazine
Availability analysis of span-restorable mesh networks
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
Availability Design of Optical Transport Networks
IEEE Journal on Selected Areas in Communications
Unavailability analysis of long-haul networks
IEEE Journal on Selected Areas in Communications
Failure protection in layered networks with shared risk link groups
IEEE Network: The Magazine of Global Internetworking
Differentiated quality-of-recovery in survivable optical mesh networks using p-structures
IEEE/ACM Transactions on Networking (TON)
Editorial: Reliable network-based services
Computer Communications
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In this paper, we develop a design methodology of survivable Wavelength Division Multiplexing (WDM) networks based on pre-configured protection structures (p-structures) to support multiple classes of Quality-of-Protection (QoP). We elaborate a generic mathematical optimization method that could be used to provide n QoP levels R"i (i=1,...,n) provided that the network topology is (n+1)-connected. The added value of the p-structure approach is studied through the analysis of the required protection capacity to efficiently meet the needs of the supported n QoP levels. Furthermore, the protection capabilities and shapes of the protection building blocks of the p-structure and p-cycle schemes are compared to each others in order to gain an insight into how the flexibility of the p-structure scheme helps in meeting the requirements of multiple QoP levels. The computation results show that, depending on the network connectivity, up to 150% of protection capacity can be saved if p-structures are used rather than p-cycles. The analysis of the shapes of the optimal p-structures shows that, depending on the targeted QoP levels, the optimal mix of p-structures is very often composed of large and small structures with high and low protection capabilities, respectively.