基于TDD系统的高速磁悬浮软切换技术研究  

Research on High Speed Magnetic Levitation Soft Handoff Technology Based on TDD System

作　　者：丁叁叁 姜付杰 栾瑾 王晓红 张艺 DING Sansan;JIANG Fujie;LUAN Jin;WANG Xiaohong;ZHANG Yi(CRRC Qingdao Sifang CO.,LTD.,Qingdao 266000,China)

机构地区：[1]中车青岛四方机车车辆股份有限公司,山东青岛266000

出　　处：《无线电通信技术》2020年第3期321-326,共6页Radio Communications Technology

基　　金：国家重点研发计划项目(2016YFB1200602)。

摘　　要：磁悬浮列车是一种运行速度达600 km/h的陆地交通运输工具,对分区切换机制设计带来更大挑战。为保证列车运行过程中的可靠通信,首先对高速磁浮车地通信系统方案进行设计,面向磁悬浮车地通信软切换需求优化设计了MAC层帧结构,同时提出基于地理位置信息的软切换机制,包括分区内切换和跨分区切换;通过仿真得出列车在速度为600 km/h的情形下,切换重叠区距离设置为264 m,可以实现切换成功概率为99.6%。The maglev train is a kind of land transportation vehicle with a running speed of more than 600 km / h. In order to ensurethe superior performance of the train during operation,this paper first analyzes the magnetic levitation vehicle-to-ground communication system. The high Doppler effect in high-speed environment leads to an increase in the system error rate. This paper designs a wireless network soft handover mechanism based on TDD system,including intra-partition handover and cross-partition handover,and designs the MAC layer frame structure. Finally,through simulation,it is concluded that the handoff success probability is 99. 6% when the speed is 600 km / h,and the distance of the switching overlap area can be set to 264 m.

关 键 词：高速磁浮 软切换 成功概率 切换重叠区 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]