中国安全科学学报 ›› 2019, Vol. 29 ›› Issue (S2): 47-50.doi: 10.16265/j.cnki.issn1003-3033.2019.S2.008

• 安全工程技术科学 • 上一篇    下一篇

基于LTE-M的城市轨道交通PIS系统应用测试*

张衡1 高级工程师, 王洪伟2 副教授   

  1. 1 北京市地铁运营有限公司 地铁运营技术研发中心,北京 102208;
    2 北京交通大学 国家轨道交通安全评估中心,北京 100044
  • 收稿日期:2019-08-28 修回日期:2019-10-12 出版日期:2019-12-30 发布日期:2020-10-28
  • 作者简介:张 衡 (1982—),男,四川南部人,硕士,高级工程师,主要从事城市轨道交通无线通信研究。E-mail:Mrzhangheng@163.com。
  • 基金资助:
    国家重点研发计划(2016YFB1200402)。

Application test of LTE-M in PIS for urban rail transit system

ZHANG Heng1, WANG Hongwei2   

  1. 1 Metro Operation Technology Research and Development Center, Beijing Mass Transit Railway Operation Corporation Limited, Beijing 102208, China;
    2 National Research Center of Railway Safety Assessment, Beijing Jiaotong University, Beijing 100044, China
  • Received:2019-08-28 Revised:2019-10-12 Online:2019-12-30 Published:2020-10-28

摘要: 为提高基于无线局域网(WLAN)的乘客信息服务系统(PIS)的安全防护能力,以可提供更稳定传输速率的LTE-M作为PIS车地通信的主要制式,来保障视频传输的质量。选取LTE-M传输的基本性能、模拟业务承载指标和视频传输效果3方面,评估LTE-M承载PIS系统业务的质量,并在北京地铁5号线进行动态测试。结果表明:LTE-M技术采用5 MHz频宽时基本满足PIS业务的需求,而以无线自由波作为传输媒介时切换性能还需要提升,故推荐使用漏泄电缆来提升LTE-M的覆盖质量,实现更好的车地通信传输性能。

关键词: 城市轨道交通, 乘客信息服务系统(PIS), 车地通信, LTE-M, 丢包率, 切换, 时延

Abstract: In order to improve the safety protection ability of the PIS based on Wireless Local Area Network (WLAN) LTE-M which can provide stable transmission rate was applied as the main method of PIS train ground communications to ensure the quality of video transmission.Thetransmission quality of LTE-M carrying PIS services was evaluated from the perspective ofbasic transmission performance, carrying indexes of simulated services and video transmission effect, and the dynamic test was carried out in Beijing Subway Line 5.The results show that the LTE-M technology with the 5MHz configuration can basically meet the needs of PIS service, that the handoff performance needs to be improved when wireless free wave is taken as the transmission medium, and that it is recommended to use leaky cable to improve the coverage quality of LTE-M and achieve better vehicle-to-ground communication transmission performance.

Key words: urban rail transit, passenger information system(PIS), train-ground communication, long term evolution for metro(LTE-M), packets loss rate, handoff, time delay

中图分类号: