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网状WDM网中双链路失效的共享路径保护设计 被引量：2

Shared-Path Protection Design for Double-Link Failures in WDM Mesh Networks
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摘要 该文研究了WDM网状网中双链路失效问题,在假定所有链路共享风险链路组(Share Risk Link Group, SRLG)分离的条件下,提出了一种动态共享路径保护(Dynamic Shared-Path Protection,DSPP)算法。DSPP能根据网络状态动态调整链路代价,为每条业务请求选择一条最小代价的工作路由和两条最小代价且SRLG分离的保护路由。仿真表明,DSPP不仅能完全保护双链路失效,并且能在资源利用率、阻塞率和保护切换时间之间进行性能折衷。 In this paper, a Dynamic Shared-Path Protection (DSPP) algorithm is proposed for double-link failures in WDM mesh networks on the condition that all links are assumed to be Share Risk Link Group (SRLG) disjoint. DSPP can dynamically adjust the link-cost according to the current state of the network, and it searches a minimum cost primary path and two minimum cost and SRLG-disjoint backup paths for each connection request. Under dynamic traffic with different load, the performances of DSPP have been investigated via simulations. The results show that DSPP not only can completely protect double-link failures but also can make the tradeoffs between the resource utilization ratio, blocking ratio, and protection-switching time.
作者 郭磊 虞红芳 李乐民
机构地区 电子科技大学宽带光纤传输与通信网技术重点实验室
出处 《电子与信息学报》 EI CSCD 北大核心 2005年第6期948-951,共4页 Journal of Electronics & Information Technology
基金 国家自然科学基金(60302010)资助课题
关键词 网状WDM网 共享风险链路组 双链路失效 共享路径保护 WDM mesh networks, Share risk link group, Double-link failures, Shared-path protection
分类号 TN913.24 [电子电信—通信与信息系统] TN929.1 [电子电信—通信与信息系统]
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参考文献6

  • 1王烨,李乐民,王晟.考虑链路负载均衡和容量限制的WDM光传送网保护设计[J].电子学报,2001,29(10):1319-1322. 被引量：1
  • 2Grover W, Doucette J, et al.. New options and insights for survivable transport networks. IEEE Communications Magazine,2002:34 - 41.
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  • 4何荣希,王晟,李乐民.光网络中支持多粒度的子通路保护算法[J].电子科技大学学报,2003,32(3):245-250. 被引量：5
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二级参考文献12

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共引文献4

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电子与信息学报
2005年 第6期

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