频谱灵活光网络的故障概率与光纤链路负载均衡联合优化方法

Joint optimization method of failure probability and fiber-link load balancing in flexible bandwidth optical network

在频谱灵活光网络中,为了解决网络故障概率与光纤链路负载均衡问题,建立了故障概率与光纤链路负载均衡联合计算与评估模型,提出了故障概率与光纤链路负载均衡联合优化方法。仿真结果表明,与传统方法相比,当不考虑保护带宽时,所提故障概率与光纤链路负载均衡联合优化方法降低了69.8%网络阻塞率,减少了45.3%频谱资源占用率,减少了41.9%平均故障概率,实现了频谱灵活光网络的故障概率与光纤链路负载均衡联合优化方法。

In order to gain insight into the relationship between the failure probability and the spectrum efficiency, both failure probability(FP) and load balancing(LB) were attempted to minimize in flexible bandwidth optical networks. An optimized FP-LB algorithm was developed to reduce failure probability and to improve the spectrum efficiency, and a traditional algorithm was further introduced for comparison in flexible bandwidth optical networks. Simulation results show that the optimized FP-LB algorithm reduces 69.8% blocking probability, 45.3% spectrum occupancy rate, and 41.9% average failure probability compared to the traditional algorithm. Obviously, the optimized FP-LB algorithm achieves the joint optimization of both failure probability and load balancing.