一种负载均衡的虚拟光网络映射算法

Virtual optical network mapping algorithm with load balancing

针对如何使多个虚拟光网络高效地共享弹性光网络的问题,建立弹性光网络中虚拟光网络映射的整数线性规划模型,提出一种新的负载均衡的虚拟光网络映射算法.这种算法综合考虑了物理网络中节点计算资源、节点紧密中心性及链路可用带宽等因素完成节点映射,同时兼顾链路距离和链路占用带宽以实现链路映射.仿真实验表明,该算法占用较少的频谱资源,可有效地提高网络负载的均衡性.

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.