摘要
针对国内地铁列车从地面向列车传输视频广播的需求,提出基于无线局域网技术的解决方案和基于泄漏电缆的移动数字电视技术方案,并对两种技术解决方案进行比较,重点探讨了基于无线局域网双向传输的车载视频系统中无缝无线切换漫游、安全性等关键问题。
There are two mainstream solutions respectively based on WLAN and Leaky cable,which are to satisfy domestic demand for video broadcasting from ground to metro train. This paper analyzes the two solutions, mainly the WLAN solution with bidirectional transmission, and discusses several key issues, induding seamless wireless roaming and handoff, security, etc.
出处
《城市轨道交通研究》
2005年第6期51-54,共4页
Urban Mass Transit
关键词
乘客信息系统
车载视频
无线局域网
passengen information system, on-board video,wireless local area network
