基于GPON系统的铁路业务接入设计与应用

Design and Application of Railway Services Access Based on GPON System

为了解决铁路各类业务日趋增长的网络带宽及可靠性需求,将GPON系统引入铁路计算机网络。以京广铁路蒲圻-白石渡段与贵广铁路三水南-佛山西区间为研究对象,分析GPON OLT、GPON ONU、分光器的设置原则以及系统保护方式,对铁路远动业务、综合视频业务以及班组接入进行GPON系统设计,并结合两条铁路的实际情况给出了合理的设计方案。研究表明,利用GPON系统可以满足铁路各类业务的接入带宽需求,根据具体需求,使用不等比分光器与多级分光器可以节省大量干线及地区光缆资源,节省项目投资。

In order to meet the increasing requirements of network bandwidth and reliability for various railway services, Puqi-Baishidu section of the Beijing-Guangzhou Railway and Sanshuinan-Foshanxi section of the Guiyang-Guangzhou Railway are selected as research objects to analyze the setting principle of GPON OLT, GPON ONU and optical splitter as well as system protection mode. The GPON system is designed for telecontrol service, integrated video service and team access service, and a reasonable design plan is put forward combined with the actual situation of the two railways. The results show that GPON system can meet the access bandwidth requirements of various railway services. Using non-uniform optical splitters and multi- stage optical splitters based on specific needs can save a lot of optical cable resources of trunk line and region to save project investment.