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While there has been many studies on the efficient design of p-cycles focusing on optimizing their spare capacity efficiency, few of them consider such a design under the wavelength continuity assumption, i.e., no wavelength converter at any node. Consequently, few authors look at the routing and wavelength assignment in the context of p-cycles, where p-cycles have to be assigned the same wavelength...
Design and planning of survivable WDM networks involve different decision and optimization problems under network, traffic, and cost constraints. The high bandwidth brought by WDM access technology has incited network operators to extensive deployment of WDM in both access and backbone networks. Edges of networks have been pushed and transport capacity significantly increased, making the design and...
We propose a general framework to optimize the design of fully pre-cross connected protection schemes in survivable transparent wavelength division multiplexing (WDM) networks using unrestricted shape protection structures (p-structures). Shared protection schemes that are fully pre-cross connected are based on predefined shape structures like p-cycles, p-trails, and FIPP p-cycles. These structures...
We propose a new design scheme of resilient wavelength division multiplexing (WDM) networks by extending and reshaping pre-configured protection tree (p-tree) structures. The resulting protection scheme relies on optimized pre-cross connected structures that span all previously proposed protection patterns. p-tree-based protection schemes offer the advantages of scalability, local restoration capabilities,...
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