Valiant负载平衡的抗毁WDM网络研究.pdf

电子发烧友 电子技术论坛 第 31 卷第 12 期 电 子 与 信 息 学 报 Vol.31No.12 2009 年 12 月 Journal of Electronics Information Technology Dec..2009 软管不确定业务量模型下基于Valiant 负载平衡的抗毁WDM 网络研究 戴 睿 李乐民 王 晟 章小宁 (电子科技大学宽带光纤传输与通信网技术重点实验室 成都 610054) 摘 要：该文研究 WDM 网状网在软管(Hose)不确定业务量模型下的鲁棒抗毁问题，提出一种基于 Valiant 负载平 衡(Valiant Load Balancing, VLB)以及共享保护机制的分段保护算法 VLB-SSP (VLB-based Shared Segment Protection) 算法。该算法遵照共享保护的思想配置波长，并通过分割保护环的方式来满足恢复时间的要求。仿真 表明，相对于专用通道 VLB 保护算法和均匀负载平衡保护方案，VLB-SSP 算法不仅具有较小的全网代价，同时 也提高了恢复的速度。 关键词：WDM 网状网；Hose 不确定业务量模型；Valiant 负载平衡；分段保护 中图分类号：TN915.63 文献标识码：A 文章编号：1009-5896(2009)12-2795-06 On Protecting WDM Networks with Valiant Load Balancing under Hose Uncertain Traffic Model Dai Rui Li Le-min Wang Sheng Zhang Xiao-ning (Key Lab of Broadband Optical Fiber Transmission and Communication Networks, UESTC, Chengdu 610054, China) Abstract: In this paper, the issue of robust protection is investigated in WDM networks under the hose uncertain traffic model. Based on Valiant Load Balancing (VLB) and shared protection, a segment protection algorithm called VLB-SSP (VLB-based Shared Segment Protection) is proposed. The algorithm provisions wavelengths in terms of the shared protection, and splits the protection loops so as to meet the requirement of recovery time. Simulation results indicate that VLB-SSP can not only achieve a lower cost budget but also perform a faster recovery in contrast to dedicated-path protection VLB algorithm and uniform Load Balancing protection scheme. Key words: WDM mesh networks; Hose uncertain traffic model; Valiant Load Balancing; Segment protection