LTE技术在轨道交通车地无线通信系统中的应用研究

发布时间：2018-06-13 01:23

本文选题：轨道交通 + 车地无线通信　；参考：《苏州大学》2016年硕士论文

【摘要】：目前,城市轨道交通内车地无线通信系统的主要承载数据有:为列车安全运行的列车控制信息、地铁安防的车载视频监控信息、为乘客服务的车载PIS信息、监视列车运行状态的车辆故障信息等。而近年在业内,传输各种车地信息所采用的技术手段普遍为802.11-WLAN技术,但因受该技术传输带宽、传输速率、外部干扰等因素的影响,WLAN技术并不能十分完美的满足各种车地信息传输的需求,因此探索一种新的高效的车地无线通信传输技术是满足列车安全运营及乘客服务的迫切需求。本论文首先分析了目前WLAN通信技术在轨道交通行业内应用时存在的相关问题及现状,其次又分析研究了 LTE的技术特点及在行业内应用的可行性,从理论层面得出两者技术差异及优劣势。再此基础上,在轨道交通工程真实环境中搭建实测平台,从工程实际环境中获取相关的技术性能参数,最终验证LTE技术应用于轨道交通车地无线通信系统中的可行性和正确性。根据研究结论,LTE技术应用于轨道交通车地无线通信系统中可解决使用WLAN的车地无线通信系统易受外界因素干扰、传输业务受带宽限制及列车高速移动过程中易产生丢包等问题,为LTE技术应用于城市轨道交通探明道路及提供理论依据。
[Abstract]:At present, the main carrying data of the wireless communication system in urban rail transit are: train control information for train safety, video monitoring information for subway security, and PiS information for passengers. Monitor the train running status of the vehicle fault information, etc. In recent years, 802.11-WLAN technology is widely used to transmit all kinds of vehicle-ground information in the industry. However, due to the bandwidth and transmission rate of the technology, The influence of external interference and other factors such as WLAN technology can not meet the needs of all kinds of vehicle-ground information transmission, so exploring a new and efficient wireless communication technology is to meet the urgent needs of train safety operation and passenger service. This paper first analyzes the existing problems and current situation of WLAN communication technology application in rail transit industry, and then analyzes the technical characteristics of LTE and the feasibility of its application in the industry. From the theoretical level, the differences between the two technologies and their advantages and disadvantages are obtained. On this basis, the real measurement platform is built in the real environment of the rail transit project, and the relevant technical performance parameters are obtained from the actual engineering environment. Finally, the feasibility and correctness of the LTE technology in the ground wireless communication system of the rail transit vehicle is verified. According to the conclusion of the research, the application of LTE technology in the ground wireless communication system of rail transit vehicle can solve the problems that the WLAN wireless communication system is easily interfered by external factors, the transmission service is limited by bandwidth, and the packet loss is easy to occur in the course of high-speed train movement. It provides theoretical basis for the application of LTE technology to urban rail transit.
【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U285.2;TN929.5

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