中文摘要：

随着高速铁路、公路交通的发展,信息网络的移动接入技术需要得到相应的改善和提高。根据公共移动通信网和铁路专用移动通信网的发展现状,目前有多种列车移动接入技术。通过方案比较,本文原型系统采用了基于无线Mesh网络技术的无线宽带接入技术。当前,无线Mesh网络可遵循的标准有IEEE802.11s草案,该草案对无线Mesh网络的功能、接口及网络协议栈进行了全面的定义。本文根据IEEE802.11s草案,在Linux操作系统下定义了Mesh协议栈框架,并在此基础上设计实现了针对列车的车地宽带接入带状应用场景的无线Mesh网络原型系统,并就搭建的实际网络场景进行了性能测试。实验结果表明,所设计的原型系统基本达到了列车车地宽带接入应用的要求。

英文摘要：

Along with development of high-speed railways and express highways,the mobile network access technology needs to be improved.In view of the developing status of the public mobile communication network and dedicated railway mobile communication network,there appear multiple available network access technologies for trains.Via comparison of network access schemes,the prototype system chooses wireless mesh network（WMN） based train broadband access technology.Currently,the IEEE802.11s draft is the standard for WMN,which gives full-scale definitions of the functions,interface and network protocol stack of WMN.According to the 802.11s draft,this paper defines the mesh protocol stack structure under the Linux operating system.On the basis of the protocol,the train broadband access WMN prototype system is designed and accomplished.Its performance is tested on the network site.The test results show that the designed prototype system can basically satisfy the requirements of train broadband access application.