| WDM网状网中双链路失效的一种共享链路保护算法 |
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| 引用本文： | 郭磊,虞红芳,周滔,李乐民.WDM网状网中双链路失效的一种共享链路保护算法[J].重庆邮电学院学报(自然科学版),2005,17(1):57-60. |
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| 作者姓名： | 郭磊 虞红芳 周滔 李乐民 |
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| 作者单位： | 电子科技大学宽带光纤传输与通信网技术重点实验室,电子科技大学宽带光纤传输与通信网技术重点实验室,电子科技大学宽带光纤传输与通信网技术重点实验室,电子科技大学宽带光纤传输与通信网技术重点实验室 四川成都610054,四川成都610054,四川成都610054,四川成都610054 |
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| 基金项目： | 国家自然科学基金"网状智能光网络的生存性研究"资助项目(60302010) |
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| 摘 要： | 针对WDM网状网中双链路失效问题,提出了一种共享链路保护算法．即SLP-2BP算法。SLP-2BP为每条业务请求计算1条最短路径作为工作通路,并为工作通路上的每条工作链路各计算2条链路分离．且为最短的保护通路。通过计算机仿真,与现有算法即SLP-1BP算法进行了性能比较。仿真结果表明SLP-2BP算法不仅能有效地保护双链路失效,而且资源利用率和阻塞率性能都优于SLP-1BP算法。
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| 关 键 词： | WDM网状网 双链路失效 共享链路保护 |
Shared-link protection algorithm for double-link failures in WDM mesh networks |
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| GUO Lei,YU Hong-fang,ZHOU Tao,LI Le-min.Shared-link protection algorithm for double-link failures in WDM mesh networks[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2005,17(1):57-60. |
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| Authors: | GUO Lei YU Hong-fang ZHOU Tao LI Le-min |
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| Abstract: | In this paper, the authors propose a novel algorithm, called SLP-2BP (Shared-Link Protection with Two Backup Paths) algorithm, for protecting the double-link failures in WDM mesh networks. SLP-2BP firstly searches a minimum hop primary path for a connection request, and then searches two minimum hop and link-disjoint backup paths for each primary link on the primary path. Under dynamic traffic with different load, the performances of SLP-2BP and SLP-1BP (Shared-Link Protection with One Backup Path) have been investigated via simulations. The results show that SLP-2BP can completely protect the double-link failures, and has a better performance than SLP-1BP on the resource utilization ratio and the blocking ratio. |
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| Keywords: | WDM mesh networks double-link failures shared-link protection |
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