Heuristic energy-saving virtual network embedding algorithm based on Katz centrality

Heuristic energy-saving virtual network embedding algorithm based on Katz centrality

Blog Article

Current networks are designed for peak loads leading to low utilization of power resources.In order to solve this problem, a heuristic energy-saving virtual network embedding algorithm based on the Katz centrality (Katz-VNE) is proposed.For solving an energy-saving virtual network embedding problem, we introduce the Katz centrality to represent the node influence.In order to minimize the energy consumption of the substrate network, the energy-saving virtual network embedding problem is formulated as an integer linear program, and the COMBO STRAW STRAIGHT Katz-VNE is used to solve this problem.The Katz-VNE tries to embed the virtual nodes onto the substrate nodes with high Katz centrality, which is effective, and uses the Hockey Protective - Shoulder Pads - Youth shortest paths offering the best factor of bandwidths to avoid the hot nodes.

The simulation results demonstrate that the long-term average energy consumption of the substrate network is reduced significantly, and the long-term revenue/cost ratio, the acceptance rate of virtual network requests, and the hibernation rate of substrate nodes as well as links are improved significantly.