【摘要】 利用现有的多业务传送技术构建高速地下铁路的通信系统,通过运营级的OAM报文实现分布式故障的快速定位.在地铁换乘站和中间站分别配置MEP和MIP管理点,利用常规开销报文实现故障发现、故障定位等功能,能够实现自动化故障倒换处理,避免了复杂的人工干预过程.为验证方法有效性,针对所设计方法在OPNET下搭建仿真平台,所用拓扑结构为北京现行地下铁路的结构.仿真结果表明该方法大幅度提高了传统的跟踪方法的效率和故障定位速度,特别在节点数目多,故障分布均匀的情况下性能更为明显.在未来的大规模线路交叉扩大运输网络规模后具有良好的应用前景.更多还原

【Abstract】 The multiple service transport techniques are used to construct the high-speed under ground sub railway communication system.The carrier OAM message is modified to achieve the fast distributed failure location.The Maintenance Entity Points(MEP) and Maintenance Intermediate Points(MIP)are configured for the transfer station and intermediary station respectively.Automatic switching can be achieved while a failure occurs without any complex manual operations.To evaluate the performance the proposed approach,a simulation platform in OPNET has been constructed with the Beijing sub railway topology.The simulation results show that it can always provide higher efficiency and fast location speed,especially for larger scale network and failures under uniform distribution.It should be widely used for the further network deployments.更多还原