铁路通信承载网现状及其规划

Present Situation and Plan for Railway Communication Transport Network

铁路通信承载网主要由传输网、数据网以及干线光缆组成,其现状资源不足,但业务却在不断增长,从而逐渐成为铁路发展的短板。文中通过业务类型分析和业务带宽计算,得出了传输网的模型,并提出了OTN与数据网结合、建设大芯数光缆环等方案,将铁路通信承载网建设成为可靠、高速、规整、IP化的基础平台。文章对于新建铁路项目、既有铁路改造项目、路局大修等工程具有一定的指导、前瞻意义。

The railway communication carrying network is composed of telecommunication network, data network and wayside optical cable. With limited resources and increasing services, it has been proved the bottleneck for railway de- velopment. Through service type analysis and service bandwidth calculation, this article depicts the mode for telecommu- nication network and proposes the schemes of combining OTN and data network and constructing multiple core optical ca- ble ring, which aims to make the railway communication carrying network into a reliable, fast, orderly and IP-based platform. Hopefully this article can be instructive and prospective for newly-built railway projects, reconstruction railway projects and railway bureau＇s repair projects.