基于无线室分技术的地铁施工期公网通信系统设计方案研究  

Design and research scheme of public network communication system during metro construction based on wireless indoor distribution technology

作　　者：胡成 HU Cheng(Nanchang Rail Transit Group Co.,Ltd.,Nanchang Jiangxi 330038,China)

机构地区：[1]南昌轨道交通集团有限公司,江西南昌330038

出　　处：《现代城市轨道交通》2024年第8期23-30,共8页Modern Urban Transit

基　　金：国家自然科学基金资助项目(61362013)。

摘　　要：针对地铁施工过程中作业人员和管理人员因公网信号覆盖不足而难以实现与外界实时通信的问题,文章提出1套基于无线室分技术的地铁施工期公网通信系统设计方案。为验证该方案的可行性与有效性,研究团队通过在南昌地铁2号线东延线罗家集站搭建测试平台进行实时测试,并使用标准的衰减因子模型通过MATLAB软件进行仿真测算,最后将仿真理论值、测试值及规范要求进行对比。结果表明,该系统在地铁施工过程中可提供稳定的无线通信信号,并可有效解决地下、地上无线网络信号覆盖不连续、通信不畅通问题。为考量成本投入与长期应用价值之间的平衡,研究团队对项目经济性同样进行深入分析,分析结果表明,本项目所采用设备在后续延长线通信系统建设中利旧复用率较高,不仅可降低长期成本,还体现出良好的可推广性和可持续性,可为类似工程提供参考与借鉴。In the process of metro construction,it is difficult for operators and managers to realize real-time communication with the outside world due to the lack of public network signal coverage.To tackle this issue,this article proposes a public network communication system design scheme based on wireless indoor division technology during metro construction.To verify the feasibility and effectiveness of the scheme,the research team set up a test platform at Luojiaji station of Nanchang metro line 2 east extension section for realtime testing,at the same time,the standard attenuation factor model is used to simulate and calculate through MATLAB software,finally,the simulation theoretical value,test value and specification requirements are compared.The research results show that the system can provide stable wireless communication signals in the process of metro construction,and effectively solve the issues of discontinuous signal coverage and blocked communication in underground and above-ground wireless networks.To consider the balance between cost investment and long-term application value,the research team also conducted an in-depth analysis of the project economics,and the analysis results show that the equipment used in this project has a high rate of recycle and reuse in the construction of the subsequent extension line communication system,which could not only reduce the long-term cost,and also reflect good generalizability and sustainability,and may provide reference and inspiration for similar projects.

关 键 词：地铁 无线室分 公网通信 直放站 

分 类 号：U231.7[交通运输工程—道路与铁道工程]