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This letter focuses on the protection method for all dual-link failures in optical mesh networks. We first state the problem and discuss the possible scenarios of dual-link failures. We then present our proposed preconfigured ball (p-Ball) protection method that provides protection against dual-link failures using fewer backup links than preconfigured cycles (p-Cycles). We propose integer linear programming...
With the expansion of optical networks, the failure probability of dual-link failure has also improved, so it is urgent to find novel protection structures to deal with dual-link failure. In this paper, we mainly focus the protection structures to solve the problem. Firstly, we describe the scenarios and the problem of dual-link failure. Then, theory of pre-configured polyhedron (p-Poly) is introduced...
Generalized Multi-Protocol Label Switching (GMPLS) based optical networks are viewed as a promising network infrastructure for the next generation network (NGN) development. By pre-configuring the resources of dynamic optical networks, we can reconstruct the physical topology, thus increase the number of direct routes between potentially heavily loaded physical node pairs and optimize the performance...
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