Modeling and algorithms for physical layer network survivability

Survivability is an important factor in the evaluation and planning of the current and the future fiber optic based telecommunication network. We analyze the survivability for the telecommunication network by considering a layered network structure, which consists of the service layer, the logical layer, the transmission system layer, and the physical layer. In this study we suggest new network survivability evaluation and improvement models for the physical layer, which consider the capacity of links of the network as well as the topology of the network. The evaluation model is based on the multi-terminal network flow theory and the improvement model is based on decomposition technique