Evaluation on anti-interference to WLAN equipments for spatial deployment of CBTC systems in tunnels

Author

Xiaofan Li ; Qizhu Song ; Hongbo Tao ; Xiaoyong Liu ; Sha Zhang ; Xiaobo Wang ; Qun Luo ; Xiao Peng

Author_Institution

State Monitoring Center & Testing Center, Beijing, China

fYear

2014

fDate

13-15 Oct. 2014

Firstpage

47

Lastpage

52

Abstract

With the rapid development of wireless communications, passengers are able to surf the internet on the subway trains through mobile communication systems, even wireless local area networks (WLAN). That leads to communications-based train control (CBTC) systems interfered by WLAN equipments in the carriage due to working on the same frequency (2.4GHz frequency band). In this paper, we evaluate the interference from WLAN equipments for the spatial deployment for CBTC systems. To investigate the impact of the carriage to radio propagation, the test on the shielding effectiveness of the carriage is carried out and also verifies the simulation results based on ray-tracing method. Then, multiple spatial deployment scenarios for access points (APs) and mobile radios (MRs) of CBTC systems are investigated on anti-interference to WLAN equipments, respectively. From the analysis, the suggestions of the deployment for APs and MRs are provided.

Keywords

Internet; radiofrequency interference; radiowave propagation; rail traffic control; railway communication; ray tracing; underground communication; wireless LAN; CBTC systems; WLAN equipments; anti-interference evaluation; communications-based train control systems; frequency 2.4 GHz; mobile communication systems; mobile radios; multiple spatial deployment; radio propagation; ray-tracing method; subway trains; wireless communications; wireless local area networks; Control theory; Decision support systems; CBTC; Inteference; Spatial Deployment; WLAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications in China (ICCC), 2014 IEEE/CIC International Conference on

Conference_Location

Shanghai

Type

conf

DOI

10.1109/ICCChina.2014.7008241

Filename

7008241