基于等效资源的可重构服务承载网故障恢复机制  

Fault recovery reconfigurable service carrying networks mechanism for based on equivalent resource

作　　者：邢池强[1] 兰巨龙[1] 胡宇翔[1] 

机构地区：[1]国家数字交换系统工程技术研究中心,郑州450002

出　　处：《计算机应用》2014年第7期1964-1968,1973,共6页journal of Computer Applications

基　　金：国家973计划项目(2012CB315901;2013CB329104);国家863计划项目(2011AA01A103;2011AA01A101);国家科技支撑计划项目(2011BAH19B01)

摘　　要：针对传统重映射故障恢复算法恢复效率低、服务中断时间长的问题,提出了一种基于等效资源的可重构服务承载网(RSCN)故障恢复算法FRA-ER。算法将故障RSCN恢复问题等价转化为寻找等效资源的问题,一次运算可恢复全部或部分故障RSCN,提高恢复效率;网络重构策略NRA周期性检测恢复后RSCN结构并进行调整优化以节省底层资源开销。仿真结果表明,与重映射算法及快速愈合算法相比,可减少平均恢复时间约15%,NRA平均每次可节省80的带宽消耗,使恢复成功率提高约10%。Aiming at the low recovery efficiency by using the traditional re-mapping failure recovery algorithm and prolonged interruption of service, a Fault Recovery Algorithm based on Equivalent Resource （FRA-ER） was proposed. The FRA-ER converted the recovery problem to finding equivalent resource problem, achieving to recovery all or part of the fault RSCNs by once. A Network Reconfigure Algorithm （NRA） was also proposed to detect and regulate the RSCNs periodically to optimize their architectures and reduce the costs. Finally, the numerical results show that the proposed FRA-ER could achieve 15% recovery time reduction compared with conventional overall re-mapping algorithm and fast recovery algorithm. The NRA could achieve 80 band reduction on average, improving the recovery success ratio by 10%.

关 键 词：可重构服务承载网 故障恢复 等效资源 网络重构 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]