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| The Application of LTE in Wireless Transmission of Subway Passenger Information System |
| HUANG Jia-qiang |
| China Railway Group Limited, Beijing 100039, China |
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Abstract Research purposes:With the rapid development of urban rail transit construction in our country, the passenger demand for information system also is increasing day by day, the deep industrial upgrading of the rail transit industry is driving industry wireless private network to broadband networks, which need to support real-time mobile broadband access under the condition of high-speed. With the characteristics of wide range, high bandwidth, a number of concurrent users, strong anti-jamming capability, safe and reliable, LTE is becoming the choice of wireless private network of rail transit industry to develop new technologies. Through the analysis and study of the application of LTE in wireless transmission of subway passenger information system, this paper can provide the reference for the similar problems in the subway design and construction.
Research conclusions:Through the study, it is concluded that: (1) Suggest that the wireless network subsystem of the subway passenger information system is made of TD-LTE technology, the frequency of use is 1 795~1 805 MHZ. System is made of switching equipment setting up in the control center, baseband equipment (BBU) setting up at the station, remote device (RRU) and road equipment setting up in the interval, car wireless devices and transmitting antenna and optical cable laying in interval tunnel, etc. (2) The long distance underground tunnel is recommended to use RRU cascade to extend coverage. Suggest system adopt community merging method, reduce the number of community, and reduce the number of switch. (3) The proposed system solutions offer the reference for the future wireless network design in urban rail transit.
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Received: 30 August 2014
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2014, Vol. 31 
