收稿日期: 2017-11-15
网络出版日期: 2019-12-31
基金资助
国家自然科学基金面上资助项目(61571282)
Reliability analysis of rail transit LTE-M communication system
Received date: 2017-11-15
Online published: 2019-12-31
结合我国大规模轨道交通建设中基于城市轨道交通的长期演进 (long term evolution-metro, LTE-M) 无线通信系统应用于基于通信的列车控制 (communication based train control, CBTC) 时系统整体构架的问题, 从可靠性理论入手, 针对 CBTC 采用 1.8 GHz 的 LTE-M 专网传输的通信系统, 建立了不同系统构架下的可靠性模型并推导了相关公式. 借鉴磁浮列车 38 GHz 专频专网 CBTC 系统的高可靠性的系统构架, 在现有的 LTE-M 布置方案基础上提出了一种双网冗余及双交叉连接的系统构架, 使列车通信系统具有更高的可靠性, 为现有 LTE-M 的大量部署提供了可靠性更高的系统构架建议.
解钧捷, 郑国莘 . 轨道交通 LTE-M 通信系统可靠性分析[J]. 上海大学学报(自然科学版), 2019 , 25(6) : 859 -869 . DOI: 10.12066/j.issn.1007-2861.1984
Urban rail transit construction is undergoing rapid development in China now. This paper addresses the issue regarding the application of long term evolution-metro (LTE-M) wireless communication system in the communication based train control (CBTC) system. Starting from the theory of reliability, frameworks of different CBTC communication systems using 1.8 GHz LTE-M network have been established and the reliability model proposed with relevant formulas derived. Drawing on the experience of the maglev 38 GHz CBTC system which has high reliability, a system framework based on dual redundancy and double cross connect has been designed. With this new system framework, the reliability of rail transit communication system becomes increased, which in turn provides hope for better use of LTE-M in city rail transit.
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