高铁无线网络质量规划设计方法

Quality Planning and Design Method of High Speed Railway Wireless Network

高铁网络作为一个重要场景,对提升客户感知有重要影响。由于高铁无线信号衰减大,高铁高速移动过程中产生的多普勒频偏及快衰现象,常用的覆盖、容量、频率等规划设计方法及参数不适用于高铁场景。提出了高铁无线网络规划设计的7个关键问题、1个控制高铁重叠覆盖区的重要方法、5个高铁规划中需关注的配置问题。通过应用,2G全程呼叫接通率达到98.2%,4G综合下载速率达到21.3 Mbit/s,高铁网络客户感知良好,取得良好的社会效益。

As an important scene, high-speed network has important effects on improving customer awareness. Due to the big wireless signal decay, the fast moving of the train causes Doppler frequency offset and fast fading phenomenon. The design methods of coverage, capacity and frequency can not be used to high-speed scene. 7 key problems on wireless network planning and design, an important method on controlling overlay coverage area, 5 issues for attention on planning are presented. The appli- cation results show that the connection success rate in 2G network is 98.2%, the download rate in 4G network reaches 21.3 Mbit/s. The customer awareness is good.