WDM网基于混合共享和SRLG约束的通路保护  

A Path Protection Scheme in WDM Networks with Mixed Shared and SRLG Constraints

作　　者：郭磊[1] 曹劲[1] 虞红芳[1] 李乐民[1] 

机构地区：[1]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

出　　处：《光电子．激光》2006年第4期438-443,共6页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60302010)

摘　　要：研究了网状波分复用(WDM)网中动态生存性路由配备问题,提出了一种新颖的基于共享风险链路组(SRLG)约束的混合共享通路保护(MSPP)方案。MSPP为每个业务请求分配工作通路和SRLG分离的保护通路,因此能完全保护单SRLG故障。与传统的共享通路保护(SPP)方案不同,在满足某些约束条件下,MSPP允许部分工作通路和保护通路共享资源。仿真结果表明,MSPP性能优于SPP。The dynamic survivable routing provisioning problem under shared risk link group （SRLG）constraints for dynamic connection requests in wavelength division multiplexing （WDM） networks is studied,and a novel protection scheme called mixed shared-path protection（MSPP）to tolerate the single SRLG failure is proposed. With MSPP, each connection will be assigned a primary path and a SRLG-disjoint backup path. Differing from previous shared-path protection（SPP）scheme,MSPP allows some primary and backup paths to share the common resources if the corresponding constraints can be satisfied. Simulation results show that MSPP yields better solutions than SPP.

关 键 词：波分复用(WDM) 生存性 共享风险链路组(SRLG) 共享通路保护(SPP) 混合共享通路保护(MSPP) 启发式算法 

分 类 号：TN929.11[电子电信—通信与信息系统] TP393.0[电子电信—信息与通信工程]