Optical networks: a practical perspective
Optical networks: a practical perspective
Efficient algorithms for routing dependable connections in WDM optical networks
IEEE/ACM Transactions on Networking (TON)
IEEE/ACM Transactions on Networking (TON)
Efficient distributed restoration path selection for shared mesh restoration
IEEE/ACM Transactions on Networking (TON)
Optical Network Design and Implementation
Optical Network Design and Implementation
Approximating optimal spare capacity allocation by successive survivable routing
IEEE/ACM Transactions on Networking (TON)
IEEE/ACM Transactions on Networking (TON)
Mesh-based Survivable Transport Networks: Options and Strategies for Optical, MPLS, SONET and ATM Networking
Architectural and technological issues for future optical Internet networks
IEEE Communications Magazine
Restorable dynamic quality of service routing
IEEE Communications Magazine
Quality-of-service routing for supporting multimedia applications
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
Subpath protection for scalability and fast recovery in optical WDM mesh networks
IEEE Journal on Selected Areas in Communications
Comparison of k-shortest paths and maximum flow routing for network facility restoration
IEEE Journal on Selected Areas in Communications
A review of fault management in WDM mesh networks: basic concepts and research challenges
IEEE Network: The Magazine of Global Internetworking
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Bi-directional WDM transmission is a technique that allows data to be transmitted simultaneously in both directions of a fiber, with different sets of wavelength channels for each direction. Compared with unidirectional WDM systems, it not only saves the cost of deploying extra fibers, but also allows more flexible bandwidth provisioning. To exploit this flexibility, we investigate path protection schemes for bi-directional WDM transmission systems in this paper. With path protection, a call is accepted if and only if an active data path together with a disjointed backup path can be found in the network. With bi-directional WDM, backup resource sharing in both directions of a fiber is possible. Based on a set of judiciously designed link cost functions, two original path protection schemes are proposed in this paper, BiPro and BiProLP. BiProLP aims at further economizing the hardware cost incurred by BiPro. In contrast to the traditional unidirectional schemes, we show that both BiPro and BiProLP can yield noticeably lower call blocking probability, higher system capacity and shorter active/backup path length.