Virtual optical network mapping algorithm with load balancing

Aimed at sharing the elastic optical network (EON) efficiently for multiple virtual optical networks, this paper sets up an integer linear programming model of virtual optical networks (VONs) mapping in EON, and proposes a novel VON mapping algorithm with load balancing (VMLB). In the VMLB, the node computing resource, node closeness centrality and available link bandwidth of the physical network are comprehensively considered to complete node mapping, while both the link distance and occupied link bandwidth are combined to implement link mapping. Simulation results show that the proposed algorithm could reduce spectrum resource usage and effectively improve the uniform performance of the network load.