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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 performance evaluation index of high-speed communication networks, but there is no unified quantitative analysis method at present. This paper proposes a quantitative analysis method for the survivability of SDH access network, and obtains the quantitative relationship between network survivability and the destruction strength, which provides a theoretical basis for the prediction and evaluation of SDH access network survivability. In addition, comparing the survivability of ring-type and chain-type SDH access networks, it is theoretically proved that the use of ring topology in SDH access network has better survivability than the use of chain topology. The result of this study can be SDH Network topology design provides a reference.