Huang Shanguo, Guo Bingli, Li Xin, Zhang Jie, Zhao Yongli, Gu Wanyi
Opt Express. 2014 Feb 10;22(3):2386-402. doi: 10.1364/OE.22.002386.
This paper focuses on random multi-link failures protection in optical mesh networks, instead of single, the dual or sequential failures of previous studies. Spare resource efficiency and failure robustness are major concerns in link protection strategy designing and a k-regular and k-edge connected structure is proved to be one of the optimal solutions for link protection network. Based on this, a novel pre-configured polyhedron based protection structure is proposed, and it could provide protection for both simultaneous and sequential random link failures with improved spare resource efficiency. Its performance is evaluated in terms of spare resource consumption, recovery rate and average recovery path length, as well as compared with ring based and subgraph protection under probabilistic link failure scenarios. Results show the proposed novel link protection approach has better performance than previous works.
本文聚焦于光网状网络中的随机多链路故障保护，而非先前研究中的单故障、双故障或顺序故障。在链路保护策略设计中，备用资源效率和故障鲁棒性是主要关注点，并且已证明k正则和k边连通结构是链路保护网络的最优解决方案之一。基于此，提出了一种新颖的基于预配置多面体的保护结构，它可以为同时发生和顺序发生的随机链路故障提供保护，同时提高备用资源效率。从备用资源消耗、恢复率和平均恢复路径长度等方面评估了其性能，并与概率链路故障场景下的基于环的保护和子图保护进行了比较。结果表明，所提出的新颖链路保护方法比先前的工作具有更好的性能。
