SDH接入网的网络生存性研究  

Survivability of SDH access networks

作　　者：史国炜[1] 曾烈光[1] 

机构地区：[1]清华大学电子工程系微波与数字通信技术国家重点实验室,北京100084

出　　处：《清华大学学报（自然科学版）》2003年第9期1269-1271,共3页Journal of Tsinghua University(Science and Technology)

摘　　要：网络生存性是高速通信网络的重要性能评估指标,但是目前尚没有统一的定量分析方法。该文提出同步数字体制(SDH)接入网网络生存性的定量分析方法,得到网络生存性与破坏强度之间的定量关系,为SDH接入网网络生存性的预测和评估提供了理论依据。另外,对环型和链型SDH接入网的生存性进行比较分析,从理论上证明SDH接入网使用环型拓扑比使用链型拓扑具有更好的生存性,该研究结果可为SDH接入网的网络拓扑设计提供参考。Network survivability is an important factor in highspeed telecom networks, but there are no standard methods to quantitatively analyze survivability. A method was developed to quantitatively analyze the survivability of synchronous digital hierarchy (SDH) access networks which relates the network survivability and the extent of the network damage. The result is useful for forecasting and evaluating the survivability of SDH access networks. Comparison of the survivability of the SDH ring and the SDH line shows that the survivability of the SDH ring is better than that of the SDH line network in principle. This conclusion will influence the type of topology used for designing SDH access networks.

关 键 词：SDH接入网 网络生存性 网络拓扑结构 同步数字体制 通信网 

分 类 号：TN915.6[电子电信—通信与信息系统]