基于智能反射面的山区铁路5G-R无线覆盖方案研究  

Research on 5G-R Wireless Coverage for Mountainous Railway Based on Intelligent Reflecting Surface

作　　者：罗文 马征[2] 吴彦良[2] LUO Wen;MA Zheng;WU Yanliang(Shaanxi Railway and Underground Traffic Engineering Key Laboratory,Xi’an Shaanxi 710043,China;Key Laboratory of Information Coding and Transmission of Sichuan Province,Southwest Jiaotong University,Chengdu Sichuan 611756,China)

机构地区：[1]陕西省铁道及地下交通工程重点实验室,陕西西安710043 [2]西南交通大学信息编码与传输四川省重点实验室,四川成都611756

出　　处：《中国铁路》2024年第12期94-99,共6页China Railway

基　　金：国家自然科学基金高铁联合基金资助项目(U2268201);国家自然科学基金面上项目(62271419);陕西省铁道及地下交通工程重点实验室项目(2022KY50ZD(ZNXT)-01)

摘　　要：基于智能反射面(IRS)的山区铁路5G-R无线覆盖解决方案,在减少通信基站数量、提升通信网络的能效比以及协助通信系统实现更快捷的信道切换等方面,具有较高的应用价值。山区铁路沿线地形条件复杂多变,5G-R无线覆盖将面临重大挑战,IRS利用大量低成本、低能耗的反射单元,能够根据实时无线信道状况动态调整信号相位,实现对无线信号的精准增强和定向传播,从而在一定程度上替代或补充传统基站,有效减少基站的部署数量,降低成本和能耗。此外,基于IRS的无线通信系统能够通过动态调整反射相位,提升通信系统在动态环境中的信道切换速度和效率,为用户提供了更加稳定和流畅的通信体验。通过实验验证了IRS对铁路沿线弱场区的信号增强覆盖效果,为IRS技术在山区铁路的5G-R无线覆盖研究提供技术参考。The 5G-R wireless coverage solution for mountainous railway based on intelligent reflecting surface(IRS)offers significant application value in minimizing the number of communication base stations,enhancing the energy efficiency ratio of communication networks,and facilitating quicker channel switching within communication systems.The terrain conditions along mountainous railway lines are complex and variable,posing significant challenges for 5G-R wireless coverage.The IRS employs a large number of low-cost,low-energy reflecting units that can dynamically adjust signal phases based on real-time wireless channel conditions,enabling precise signal enhancement and directional transmission of wireless signals.This technology can replace or supplement traditional base stations to some extent,effectively reducing the number of base station deployments and lowering both costs and energy consumption.Moreover,the IRS-based wireless communication system enhances the speed and efficiency of channel switching in dynamic environment by dynamically adjusting the reflection phase,offering users a more stable and seamless communication experience.Tests have verified the effectiveness of IRS in enhancing signal coverage in weak field areas along railway lines,providing a technical reference for the research of 5G-R wireless coverage of IRS technology for mountainous railway.

关 键 词：智能反射面 山区铁路 5G-R 降低能耗 信道切换 

分 类 号：U283[交通运输工程—交通信息工程及控制]