铁路时间同步网节点天地时间源互备失败案例分析
Case Analysis of Mutual Standby Failures of Space-Ground Time Sources at Railway Time Synchronization Network Nodes
程华 1孙宇飞 2岑钰 3潘峰4
作者信息
- 1. 北京铁路通信技术中心,北京 100038
- 2. 中国铁路广州局集团有限公司电务部,广东广州 510080
- 3. 中国铁路广州局集团有限公司广州通信段,广东广州 510080
- 4. 中国信息通信研究院技术与标准研究所,北京 100191
- 折叠
摘要
通过二级时间节点的天地时间源互备失败现象,分析天地时间源互备失败原因.主要原因为天地时间源间时间偏差过大,从理论上计算长距离地面时间传送可能引入的时间误差,并分析造成时间误差过大的几种可能原因.由此得出,现有铁路时间同步网技术架构难以满足将来5G-R系统对高精度时间同步性能和安全可靠运维要求,有必要研究完善铁路时间同步网技术架构、组网方案,并进一步健全运维方法.
Abstract
This paper analyzed causes of space-ground time source mutual standby failures,focusing on failures occurring at secondary time nodes.The main contributor identified is the excessive time deviation between space-ground time sources.A theoretical calculation was performed to estimate the time error that may arise from long-distance time transmission on the ground.Additionally,several potential causes for the excessive time error were examined.Therefore,it is found that the existing technical architecture of the railway time synchronization network is insufficient to meet the future 5G-R system's requirements for high-precision time synchronization performance as well as safe and reliable operation and maintenance.It is essential to study and enhance the technical architecture and networking schemes of the railway time synchronization network,and further improve the operation and maintenance methods.
关键词
铁路时间同步网/时间误差/时间源/天地互备失败/5G-R系统Key words
railway time synchronization network/time error/time source/space-ground mutual standby failure/5G-R system引用本文复制引用
出版年
2024
NETL
NSTL
万方数据