摘要
随着城市高速轨道交通(120km/h以上)的建设,采用无线局域网技术(802.11ac、802.11n)组建车地宽度网络已很难满足列车高速、高带宽、低时延的要求。EUHT在交通工程中的应用推广为车地宽带网络的选型提供技术支持。对广州地铁知识城支线EUHT的系统结构、技术要求、EBU布点、信号切换、网络同步、设施安装、业务测试等几个方面进行简要介绍。广州地铁知识城支线的应用成果表明EUHT可实现120km/h速度下单列车30路高清视频图像实时上传,动态带宽达到300Mb/s,为保障列车安全提供十分重要的技术支持,同时也为160 km/h以上的地铁车地无线宽带网络建设提供重要的技术参考。
With the construction of high-speed rail transits（120 km/h or above）, the use of WLAN technology（802.11 ac and 802.11 n） to build the Vehicle-Ground network has had difficulty meeting the high speed, high bandwidth, and low delay requirements. The application of EUHT in traffic engineering provides technical support for the selection of Vehicle-Ground broadband network. This article briefly introduces the system structure, technical requirements, EBU layout, signal switching, network synchronization, facility installation, and business testing of EUHT enhanced ultra-high throughput, of the Guangzhou Metro knowledge city branch line. The application results of the Guangzhou Metro Knowledge City branch line show that EUHT can accomplish 30 ways of the real-time uploading of high-definition video images of a single train travelling at 120 km/h speed, and a dynamic bandwidth of up to 300 Mbps. It provides very important technical support for train safety assurance, and also provides important technical reference for the metro wireless Vehicle-Ground broadband network above 160 km/h.
作者
朱云冲
ZHU Yunchong(Guangzhou Metro Design ＆ Research Institute Co.,ltd.,Guangzhou 510000)
出处
《都市快轨交通》
北大核心
2018年第5期22-26,共5页
Urban Rapid Rail Transit
关键词
轨道交通
超高速无线通信系统
有效全向辐射功率
乘客信息系统
控制中心
urban rail transit
EUHT
effective isotropic radiated power （EIRP）
passenger information system （PIS）
Operation control center （OCC）
