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

doi:10.16265/j.cnki.issn1003-3033.2019.S2.008

China Safety Science Journal ›› 2019, Vol. 29 ›› Issue (S2): 47-50.doi: 10.16265/j.cnki.issn1003-3033.2019.S2.008

• Safety Science of Engineering and Technology • Previous Articles Next Articles

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

ZHANG Heng¹, WANG Hongwei²

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

Abstract

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

CLC Number:

X913.4

ZHANG Heng, WANG Hongwei. Application test of LTE-M in PIS for urban rail transit system[J]. China Safety Science Journal, 2019, 29(S2): 47-50.

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

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