高生存性光接入网结构分析  

Analyse for optical access network with higher survivability

作　　者：刘斐[1] 张斌[1] 

机构地区：[1]华信邮电咨询设计研究院有限公司3G研究院,杭州310014

出　　处：《光通信技术》2008年第5期9-12,共4页Optical Communication Technology

摘　　要：从网络结构方面对光接入网生存性进行了研究,在对各种网络接入结构生存性初期分析的基础上,利用共享链路组(SRLG)的概念定量分析了各种接入拓扑结构的网络生存性,表明了星型环接入网结构在网络生存性方面较现行各种网络结构的优越性;提出了改进的网络生存率计算算法,利用分层计算和等价归并结合的方式,减少了计算量,提高了计算效率,尤其在总故障数目多的情况下可以大大减少计算时间,快速计算网络生存率。The survivability of optical access network was studied from the aspect of topology. On the basis of the early study from one new topology of access network with higher survivability, the Shared Risk Link Group （SRLG） concept is considered in analyzing survivability of the networks. The results showed the priority of the survivability of star-ring network with respect to other access topologies once more; an improved algorithm for calculation of network survivability was proposed. It decrease amount of network-state combination to be calculated and provides higher efficiency by way of calculate the combinations of each network lay- er separately and combine the equivalent network-state. The improve effect is better in larger total failure amounts.

关 键 词：下一代光网络 光接入网生存性 光网络生存率均值 SRLG 

分 类 号：TN915.63[电子电信—通信与信息系统]