地铁隧道场景下低损耗泄漏电缆的研究与应用

Research and application of Lower Loss Leaky-Coaxial-Cable in subway tunnel

目前,国内地铁隧道4G/5G公用移动通信网络覆盖基本采用三家运营商共享双路(或四路)1-1/4全频段漏缆建设方案,或电信联通共享双路1-1/4全频段漏+移动独享双路1-5/8漏缆建设方案。以上两种建设方案存在无线主设备利用率偏低或漏缆共享不充分的缺陷。文章从漏缆的设计原理出发,阐述了传统漏缆在5G公用移动通信网络建设中存在的问题,并提出了一种基于低损耗漏缆的地铁隧道5G公用移动通信网络覆盖方案。

At present,the 5G network coverage of domestic subway tunnels basically adopts the construction scheme of China Telecom&China Mobile&China Unicom sharing two-way(four-way)1-1/4 full band leaky-coaxial-cables,or China Telecom&China Unicom sharing two-way 1-1/4 full band leaky-coaxial-cables,China Mobile use two-way 1-5/8 leaky-coaxial-cables alone.The above two construction schemes have the defects of low utilization rate of Radio Remote Unit or insufficient leakycoaxial-cable sharing rate.Based on the design principle of leaky-coaxial-cable,this text expounds the problems of traditional leaky-coaxial-cable in 5Gnetwork construction,and proposes a 5Gnetwork coverage scheme for subway tunnels based on lower loss leaky-coaxial-cable.