%0 Journal Article
%T Data Transit Method in Rail Communication System Based on WLAN<br>基于WLAN的轨道通信系统的数据中转方法
%A LIU Hong-Wu
%A ZHENG Jun-Fei
%A YANG Guo-Wei
%A XIONG Xiao-Liang
%A <br>刘洪武
%A 郑俊飞
%A 杨国为
%A 熊小亮
%J 计算机系统应用
%D 2012
%I 
%X Metro wireless communication systems is an important part of the integrated rail traffic control system. The existing metro wireless communication systems is based on WLAN technology, due to the train nodes must be frequently switch between ground wireless access points. Wireless link is needed to establish new connections frequently, so network routing has also to be frequent changed, which will affect the real-time transmission of data. Which will make the video incoherent and the appearance of mosaic. This paper describes a technology using raw socket to encapsulate the date which sending to the STA （Station, mobile station） in the AP （Access Point, mobile access point）side, this package contains the destination STA MAC address and destination server IP address. By using this technology we realize the data transfer in the condition of train STA frequent switching between ground wireless access points. Thus reducing the switching time.
%K wireless communications
%K rail transportation
%K real-time monitoring
%K subsystem
%K wireless LAN
%K data transit<br>无线通信
%K 轨道交通
%K 实时监控
%K 子系统
%K 无线局域网
%K 数据中转
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D4F6864C950C88FFCE5B6C948A639E39&aid=2F008F04A30914BA536BD10B9DD2DA0E&yid=99E9153A83D4CB11&vid=659D3B06EBF534A7&iid=E158A972A605785F&sid=F8035C8B7D8A4264&eid=FD7C952458BFB5D8&journal_id=1003-3254&journal_name=计算机系统应用&referenced_num=0&reference_num=11