摘要
为了解决高铁隧道环境下5G不能有效沿用4G现有网络的问题,在分析现网高铁隧道覆盖现状和高铁隧道洞室的设置特点的基础上,通过链路预算计算了一定的边缘速率要求下泄漏电缆在3.5G频段的覆盖能力,并从两个方向论述了如何实现高铁隧道的全线覆盖,最后提出了不同的适用场景,即在5G建设初期,建议采用隧道双侧设置漏缆进行覆盖,后期随着5G网络建设的推进,以及2.1G频段的清理完毕,可逐步采用隧道单侧覆盖。
In order to solve the problem that 5G can not effectively use the existing 4G network in the high-speed railway tunnel environment,this paper first analyzes the current status of high-speed rail tunnel coverage and the characteristics of high-speed rail tunnel caverns,then gives the coverage capability of the leaky cable in the 3.5G band under certain edge rate requirements through the link budget,and discusses how to realize full coverage of high-speed rail tunnels from two directions.Finally,under different application scenarios,it is recommended to set leaky cables on both sides of the tunnel for coverage in the early stage of 5G construction and one side coverage of the tunnel can be gradually used in the later stage with the promotion of 5G network construction and the completion of 2.1G frequency band cleaning.
作者
张晓江
吴丽勇
ZHANG Xiaojiang;WU Liyong(Huaxin Consulting Co.,Ltd.,Hangzhou 310052,China)
出处
《移动通信》
2020年第3期85-88,96,共5页
Mobile Communications
关键词
5G
高铁隧道
链路预算
隧道洞室
泄漏电缆
5G
high-speed railway tunnel
link budget
tunnel caverns
leaky cable
