A DUPLICATED NETWORK STRUCTURE FOR AN LTE-BASED TRAIN CONTROL COMMUNICATION

Vu Khanh Quy; Dang Van Anh; Vi Hoai Nam; Nguyen Dinh Han; Do Thi Thu; Vu Thanh Trung; Do Thanh Tung

Vu Khanh Quy Hung Yen University of Technology and Education
Dang Van Anh Hung Yen University of Technology and Education
Vi Hoai Nam Hung Yen University of Technology and Education
Nguyen Dinh Han Hung Yen University of Technology and Education
Do Thi Thu Hung Yen University of Technology and Education
Vu Thanh Trung Hung Yen University of Technology and Education
Do Thanh Tung Hung Yen University of Technology and Education

Keywords: railway communication, LTE-R, high-speed rail, train control, dual link, Korean railway

Abstract

The International Union of Railways has decided to migrate railway communication technology from being GSM-based to LTE-based or LTE-R. As a leading country in LTE space, South Korea will launch the train control system based on LTE by 2016. To ensure the most reliable train operation in this system, a fully duplicated network structure with overlaid radio cells is needed. Existing methods and results often rely on a single network structure setup. Thus, in this paper, we introduce the design of an LTE-R train control communication with a duplicated network structure. We propose two different network structures with fully-overlapping cell arrangement and with partly overlapping cell arrangement, respectively for the system and discuss major problems, including handover and inter-cell interference.

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