LTE-M,用于轨道交通,CBTC,的时延分析

doi:10.12066/j.issn.1007-2861.1911

上海大学学报(自然科学版) ›› 2019, Vol. 25 ›› Issue (2): 180-188.doi: 10.12066/j.issn.1007-2861.1911

LTE-M,用于轨道交通,CBTC,的时延分析

张睿, 郑国莘(), 解钧捷

上海大学特种光纤与光接入网省部共建重点实验室,上海 200444

收稿日期:2017-03-13 出版日期:2019-04-30 发布日期:2019-05-05
通讯作者: 郑国莘 E-mail:gxzheng@staff.shu.edu.cn
基金资助:
国家自然科学基金重点资助项目(61132003);国家自然科学基金面上资助项目(61571282)

Delay analysis of LTE-M in rail transit CBTC system

ZHANG Rui, ZHENG Guoxin(), XIE Junjie

Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Shanghai University, Shanghai 200444,China

Received:2017-03-13 Online:2019-04-30 Published:2019-05-05
Contact: Guoxin ZHENG E-mail:gxzheng@staff.shu.edu.cn

摘要/Abstract

摘要：

基于通信的列车自动控制(communication based train control,CBTC)系统采用地铁长期演进系统(long term evolution-metro,LTE-M)完成车地之间的数据通信, 并限定数据在较低的时延内完成传输.将CBTC系统中列车终端接入基站的通信模型化为排队论体系中的M/M/1/m/m模型,推导LTE-M应用于CBTC时数据传输时延的概率预测方法,并给出满足CBTC需求的相关条件,为LTE-M系统的可靠性设计提供参考.

关键词: 轨道交通, CBTC, LTE-M, 排队论, 通信时延

Abstract:

LTE-M system is proposed to be used in the next generation of rail transit communication based train control (CBTC) system to achieved at a communication between the way side and vehicles. Such communications require low delay of data transit. Communication of vehicle terminal accessing the base station is modeled as M/M/1/m/m in the queuing theory. A method is developed to predict probability of data transit delay when LTE-M is used in CBTC. Related conditions are presented to meet the CBTC requirements. This study provides a reference for reliability design of the LTE-M system in the future.

Key words: rail transit, communication based train control (CBTC), long term evolution-metro (LTE-M), queuing theory, communication delay

中图分类号:

TN92

张睿, 郑国莘, 解钧捷. LTE-M,用于轨道交通,CBTC,的时延分析[J]. 上海大学学报(自然科学版), 2019, 25(2): 180-188.

ZHANG Rui, ZHENG Guoxin, XIE Junjie. Delay analysis of LTE-M in rail transit CBTC system[J]. Journal of Shanghai University（Natural Science Edition）, 2019, 25(2): 180-188.

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LTE-M,用于轨道交通,CBTC,的时延分析

Delay analysis of LTE-M in rail transit CBTC system

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