多运营商高铁隧道移动网络覆盖方案

高铁移动网络覆盖是国内三大通信运营商的一个重点,而高铁隧道内移动网络覆盖更是运营商的一大难点痛点。文章根据我国中部省份某高铁线路覆盖规划实例,采用“设备+POI+泄漏电缆”模式,即三家运营商信号源设备通过同一POI(point of interface,多系统接入平台)接入,信号输出到泄漏电缆进行隧道覆盖,隧道口场坪站安装宽频切换天线对隧道外进行延伸覆盖,通过链路预算合理布置各运营商主设备信号源,从而实现隧道到室外的无缝覆盖。最后,根据已有成熟网络覆盖解决方案,对未来5G高铁隧道移动网络覆盖方案进行了探讨。

Discussion on mobile network coverage scheme of multi operator high-speed rail tunnel

High-speed rail mobile network coverage is one of the key points of the three major telecommunications operators, and high-speed rail tunnel mobile network coverage is a major difficulty for operators. According to an example of high-speed railway line coverage in the central province of China, this paper adopts the mode of "Equipment + POI + Leaky cable", that is, the signal source equipment of three operators is connected through POI(point of interface), the signal is output to leaky cable for tunnel coverage, and the tunnel is extended and covered by broadband switching antenna installed at the tunnel entrance Changping station, and the main equipment signal sources are reasonably arranged through the link budget to realize the seamless coverage from the tunnel to the outside. Finally, according to the existing mature network coverage solutions, the future mobile network coverage scheme of 5G high-speed railway tunnel is discussed.