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Shared p-cycles design for dual link failure restorability in optical WDM networks
  • 时间:0
  • 分类:TN915.01[电子电信—通信与信息系统;电子电信—信息与通信工程]
  • 作者机构:[1]Key Laboratory of Optical Communications and Lightwave Technologies,Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 相关基金:Acknowledgements This work is supported by the National Science Fund for Distinguished Young Scholars (60325104), the National Natural Science Foundation of China (60572021), the SRFDP of M0E (20040013001).
  • 相关项目:光子网格层进式资源管理机制研究
中文摘要:

预先配置的周期(p 周期) 能在部门 multiplexing (WDM ) 联网的波长达到高能力效率和快保护切换时间。这篇文章为产生能在双连接失败的情况下保证 100% 得到 restorability,并且给一个整数解决最小化全部的业余能力的分享的 p 周期设计问题的线性编程(ILP ) 明确的表达的所有周期的一个子集建议加权的跨骑连接算法(WSLA ) 。数字结果证明我们的方法能与可接受的业余能力完成百分之百双的连接失败 restorability。需求的更大的标准差设定并且越大节点度网络,分享的 p 周期计划执行越多更好。

英文摘要:

Pre-configured cycles (p-cycles) can attain high capacity efficiency and fast protection switching times in wavelength division multiplexing (WDM) networks. This article proposes the weighted straddling link algorithm(WSLA) for generating a subset of all cycles that can guarantee 100% restorability in case of dual link failure, and give an integer linear programming(1LP) formulation that solves the shared p-cycles design problem minimizing the total spare capacities. Numerical result shows that our method can achieve 100% dual link failure restorability with acceptable spare capacity. The larger standard deviation of demand set and the larger node degree network, the better the shared p-cycles scheme performs.

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