轨道交通无线通信系统电波覆盖特性的研究

Research on the Radio Coverage Characteristic of Rail Transit Communication System

随着我国轨道交通事业的快速推进,无线通信技术将发挥越来越重要的作用。本文就是对无线覆盖这个当今轨道交通通信领域关注的焦点问题进行研究。在考虑速度因子和列控因子的基础上提出了一种新的小区覆盖半径的算法。该算法较全面的考虑了轨道交通运输环境下无线电波传播的路径损耗因素,包括快、慢衰落保护,高速保护、控制保护等,并对典型的移动终端进行了分析,计算得出了多种基站高度情况下的小区的覆盖半径。

With the rapid development of the rail transportation system in China, the wireless communications technology will play an increasingly important role in this area. This paper studies the communications coverage areas of wireless system which is the focus of attention problems in transportation system. A new cell coverage radius calculation algorithm is proposed based on considering the speed factor and rail control factor. Radio wave propagation path loss factor under orbital transport environment is considered, including the protection of fast and slow decline, the protection of high speed and the protection of railway control As examples, some cell radius are calculated with different base station heights and different movement terminals, too.