A topological reconfiguration method for enhancing networks survivability with limited resources

Abstract

For an existing network and in limited link addition resources, it is a valuable task to determine optimally the new link resources such that the resulting network is the most robust and efficient. In this paper, we investigate the modeling and analysing of network topological reconfiguration optimization with limited link addition (NTRLA). The network survivability metric is proposed to quantitatively characterize the robustness and efficiency of a network. To approximately solve the NTRLA problem, a heuristic algorithm based on the preferential configuration of enhanced node-protecting cycles (PCNC) is proposed. Simulation results show that the PCNC method can effectively improve the network robustness and communication efficiency at the cost of the least added link resources under either random or targeted attack.