多种保护方式在传输网络中的应用

The Applications of Protection Methods Used in Transmission Network

该文讨论通信网络各层所需的保护方式。建设SDH传输网时,运营商面临着网络结构设计及确定要使用的保护方式问题。根据不同保护机理,对自愈环的两种保护方式进行数学建模。单向通道保护环为分离路由,双向复用段环为一致路由。通过对两种保护方式信号收发不同路由方向,计算各跨距段业务量。模型从业务量的角度,对比相同业务量在两种不同保护方式下传输的网络利用率和最大带宽。该模型较好的比较了在不同业务分布模型下二纤单向通道保护和二纤双向通道保护的实用性,从而得出网络各层所需的保护方式。

In the paper we are focus on the protection methods that used in different layers of transmission network.The network structure and the protection mode are the unavoidable issues through constructing period of SDH transmission network.The mathematical modeling of PP and MSP are the kernel of this paper.We are mainly compared different kinds of network topology and the suitable protection method by MATLAB.MATLAB are used to calculate network utilization rate and protection circuit of PP and MSP.Based on the different routing methods of PP&MSP,MATLAB calculates the traffic of each span in the whole ring.We analyze network utilization rate under the two different protection methods which based on the same traffic hypothesis.The models are the efficacious method to compares with the PP and MSP under the different traffic condition.And can do some help to SDH transmission network construction.