城轨交通车地通信综合承载系统  

Integrated Bearing System for Train-Ground Communication of Urban Rail Transit

作　　者：禹志阳 石雪涛 郜新军 YU Zhiyang;SHI Xuetao;GAO Xinjun(Signal&Communication Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;State Key Lab of Rail Traffic Signal&Control,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]中国铁道科学研究院集团有限公司通信信号研究所,北京100081 [2]北京交通大学轨道交通信号及控制国家重点实验室,北京100044

出　　处：《中国铁路》2024年第4期79-84,共6页China Railway

基　　金：北京市自然基金项目(L221016)。

摘　　要：城轨交通传统车地通信依赖地面基站中转,导致较大的信号传输时延;传统通信系统易受基站故障和链路干扰的影响,降低了通信的可靠性,甚至对交通安全造成潜在风险;目前城轨交通轨旁设备多采用有线通信方式,建设与维护成本较高。基于无线自组织网络(Ad-hoc)的城轨交通车地通信方案可以有效节约布网成本。通过构建以轨旁设备、列车和车站汇聚节点为核心的无线自组织网络,承载城轨交通业务数据传输,降低了控制环节与接口复杂度,能够实现实时的车车、车地安全通信。设计基于无线自组织网络的城轨交通车车通信综合承载系统,并利用无线自组网基站、信道仿真器、可调衰减器等设备在实验室环境下模拟城轨交通环境,验证了车车通信能力。测试结果表明:Ad-hoc系统具有自组织无中心、低网络延时、强网络鲁棒性、多跳传输等特点,能够满足城轨交通业务的需求。The conventional train-ground communication of urban rail transit relies on trackside base stations for relaying,which leads to significant signal transmission delays.However,conventional communication systems are susceptible to base station failures and link interference,which impairs communication reliability and poses potential risks to traffic safety.Currently,the trackside equipment of urban rail transit mainly uses wired communication,which incurs high construction and maintenance costs.The train-ground communication of urban rail transit based on a wireless Ad-hoc network can effectively save network deployment costs.By building a wireless Ad-hoc network with the trackside equipment,train,and station aggregation nodes at the core to carry the data transmission of urban rail transit,the complexity of control and interfaces can be reduced,thus ensuring secure real-time train-train and train-ground communication.An integrated bearing system for train-train communication of urban rail transit based on a wireless Ad-hoc network was designed.Additionally,the urban rail transit environment was simulated in a laboratory environment by using equipment such as the wireless Ad-hoc network base station,channel simulator,and adjustable attenuator to verify the train-train communication capability.The test results indicate that the Ad-hoc system has the characteristics of self-organizing without center,low network delay,strong network robustness,and multi-hop transmission and it can meet the requirements of urban rail transit.

关 键 词：城轨交通 车地通信 AD-HOC MimoMesh 车车通信 综合承载 

分 类 号：U231[交通运输工程—道路与铁道工程] U285