全光网中采用可信度模型的故障定位技术

发布时间：2018-06-25 16:49

本文选题：全光网 + 故障定位　；参考：《西安电子科技大学学报》2016年06期

【摘要】：宽带业务的飞速发展推动着光网络向着超大容量、超高速率方向演进.与此同时,在透明节点增加、光电再生设备减少的全光网络中,多故障定位的非完全多项式属性、网络拓扑的复杂性以及承载业务的多样性使得故障定位变得尤为困难.如何根据收集的告警信息,确切地找出故障的准确数目及其位置成为网络管理人员的难题.针对全光网中故障与告警的关系展开研究,在多故障定位的相关方向上完成了采用可信度推理方法对故障与告警之间的复杂映射关系进行梳理,建立了一种多故障条件下全光网故障定位模型,并以此为基础,提出了基于模糊隶属度以及联合可信度的两种启发式故障定位算法.通过不同的网络拓扑以及与其他的算法对比,对这两种算法以及可信度模型的正确性进行了验证.仿真结果表明,该模型能够很好地处理多故障定位问题的不确定性,且定位性能优越,具有很强的实际意义.
[Abstract]:The rapid development of broadband services promotes the evolution of optical networks towards super-capacity and ultra-high speed. At the same time, in the all-optical network with the increase of transparent nodes and the decrease of optoelectronic regeneration equipment, the non-complete polynomial attributes of multi-fault location, the complexity of network topology and the diversity of carrying services make fault location more difficult. It is difficult for network managers to find out the exact number and location of faults according to the alarm information collected. Based on the research of the relationship between fault and alarm in all-optical network, the credibility reasoning method is used to sort out the complex mapping relationship between fault and alarm in the direction of multi-fault location. In this paper, a fault location model for all-optical network under multi-fault condition is established. Based on this model, two heuristic fault location algorithms based on fuzzy membership and joint reliability are proposed. The correctness of the two algorithms and the credibility model are verified by different network topologies and comparison with other algorithms. The simulation results show that the model can deal with the uncertainty of multi-fault location problem well, and the location performance is superior, which is of great practical significance.
【作者单位】：西北师范大学物理与电子工程学院;北京邮电大学信息光子学与光通信教育部重点实验室;
【分类号】：TN929.1

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