摘要
[目的]近年来,城市轨道交通无线通信技术已由WLAN (无线局域网)逐步演进为LTE-M(长期演进-地铁),针对不同无线通信制式线路的贯通运营需求,根据WLAN与LTE-M的技术特点,提出PRP(并行冗余协议)双路冗余通信系统,并通过测试验证其性能。[方法]介绍了PRP双路冗余通信架构的数据传输方式。在深圳地铁11号线WLAN和LTE双系统覆盖区域进行了LTE单链路、WLAN单链路以及LTE和WLAN双链路的车地通信性能测试。以无锡地铁S1线和1号线贯通运营工程为例,进行了PRP双路冗余通信系统的应用验证。[结果及结论]PRP架构下,列车能兼容两种无线通信模式,并满足CBTC(基于通信的列车控制)信号系统的要求;列车经过LTE-M和WLAN两种不同无线通信传输方式覆盖区域时,可以实现两种模式的无缝切换;PRP架构与单链路LTE或WLAN相比,各种性能指标及无线冗余度均有大幅提升。
[Objective]In recent years,urban rail transit wireless communication technology has gradually evolved from WLAN(wireless local area network)to LTE⁃M(long⁃term e⁃volution for metro).To address the needs of through⁃operation on lines with different wireless communication standards,a PRP(parallel redundancy protocol)dual⁃link redundant com⁃munication system is proposed based on the technical character⁃istics of WLAN and LTE⁃M,and the performance of this sys⁃tem is tested through verification.[Method]The data trans⁃mission method of the PRP dual⁃link redundant communication architecture is introduced.Performance tests of vehicle⁃wayside communication are conducted on Shenzhen Metro Line 11 in areas covered by both WLAN and LTE systems,including LTE single⁃link,WLAN single⁃link,and dual⁃link LTE⁃M and WLAN configurations.Additionally,the PRP dual⁃link redun⁃dant communication system is applied and verified in the through⁃operation project of Wuxi Metro Line S1 and Line 1.[Result&Conclusion]Under PRP architecture,trains can be compatible with both wireless communication modes and meet the requirements of CBTC(communication⁃based train con⁃trol)signaling system.When train pass through areas covered by both LTE⁃M and WLAN communication transmission meth⁃ods,seamless switching between the two modes can be a⁃chieved.Compared to single⁃link LTE or WLAN,the PRP ar⁃chitecture significantly improves various performance indicators and wireless redundancy.
作者
潘良
张宏强
姚吉
包佳伟
张闻博
赵业东
PAN Liang;ZHANG Hongqiang;YAO Ji;BAO Jiawei;ZHANG Wenbo;ZHAO Yedong(Wuxi Metro Construction Co.,Ltd.,214023,Wuxi,China;CASCO Co.,Ltd.,200071,Shanghai,China;Zhuzhou CRRC Times Electric Co.,Ltd.,412001,Zhuzhou,China)
出处
《城市轨道交通研究》
2024年第S2期47-50,62,共5页
Urban Mass Transit
关键词
城市轨道交通
信号系统
贯通运营
并行冗余协议
urban rail transit
signaling system
through⁃op⁃eration
parallel redundancy protocol
作者简介
通信作者:潘良,工程师,panliang_jn@163.com
