摘要
[目的]城市轨道交通带上盖物业开发的停车场设计非常复杂,需增加较多的柱网,且上盖物业开发后,综合楼楼顶架设全向天线将无法覆盖停车场地面区域。为了有效解决带上盖物业开发的停车场无线通信覆盖,需对带上盖物业开发停车场的无线通信覆盖方案及关键技术进行研究。[方法]以西安地铁6号线带上盖物业开发的纺织城停车场TETRA(泛欧集群无线电)通信系统工程设计为依托,鉴于无线通信覆盖工程的难点,提出了无线通信系统的频率规划分配方案;针对该停车场的运用库、道岔区、出入段线以及场内非盖下区域道路,提出了无线通信覆盖方案。[结果及结论]纺织城停车场采用FA频组进行无线覆盖时,保证了频率间隔,避免了同频干扰;纺织城停车场引入公安无线通信系统,采用与专用无线通信系统信号合路覆盖方案;盖下停车场区域采用定向天线替代楼顶全向天线覆盖方式,其中运用库采用天线对射,咽喉区采用天线补强,U型槽采用天线覆盖解决越区切换,周边道路利用建筑物侧墙或立柱采用定向天线进行覆盖。提出的带上盖物业开发的停车场无线通信覆盖方案,降低了系统干扰以及对既有运营的影响,有效解决了盖下停车场的无线通信覆盖,节约了工程投资。
[Objective]The cover development design for urban rail transit parking lot is very complicated,requiring more new column grids.Moreover,after the cover development,the omnidirectional antenna set up on the roof of the complex building cannot cover the ground area of the parking lot.In order to effectively realize the wireless communication coverage of the parking lot,it is necessary to study the related schemes and key technologies.[Method]Based on the systematic engineering design of TETRA(terrestrial trunked radio)communication system for the parking lot of Textile City Station on Xi’an Metro Line 6 and in view of the difficulties of wireless communication coverage engineering,the frequency planning and allocation scheme of wireless communication system is proposed.A wireless communication coverage scheme is proposed for the parking lot,switch area,access sections and roads in the non-cover area of the parking lot.[Result&Conclusion]FA(frequency allocation)frequency group for wireless communication coverage is adopted for the parking lot of Textile City Station,which ensures frequency interval and avoids same frequency interference.The public security wireless communication system is introduced into the above parking lot,and the scheme of signal route coverage combined with the dedicated wireless communication system is adopted.Directional antenna is used as the coverage mode for the covered parking area to replace the omnidirectional antenna on the roof.Antenna correlation is used for the depot,antenna reinforcement for the throat area,and antenna coverage for U-shaped slot to solve the cross-zone switching,and directional antennas are adopted to cover the surrounding roads by utilizing building sidewalls or columns.The proposed wireless system coverage scheme for the cover development parking lot not only reduces the system interference and the impact on the existing operation,but also effectively solves the problem of the wireless communication coverage for the cover development parking lot,saving the project investment.
作者
李庆刚
LI Qinggang(Shaanxi Railway and Underground Traffic Engineering Key Laboratory(FSDI),710043,Xi’an,China;China Railway First Survey and Design Institute Group Co.,Ltd.,710043,Xi’an,China)
出处
《城市轨道交通研究》
北大核心
2024年第3期253-258,267,共7页
Urban Mass Transit
关键词
城市轨道交通
上盖物业开发
停车场
无线通信覆盖方案
关键技术
urban rail transit
cover development
parking lot
wireless communication coverage scheme
key technology
