A Multi-Mode Multi-Band and Multi-System-Based Access Architecture for High-Speed Railways
A Multi-Mode Multi-Band and Multi-System-Based Access Architecture for High-Speed Railways
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DOI：
10.1109/vetecf.2010.5594223
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发表时间：
2010-10
期刊：
影响因子：
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通讯作者：
Jiayi Zhang;Z. Tan;Z. Zhong;Yong Kong
中科院分区：
文献类型：
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作者：
Jiayi Zhang;Z. Tan;Z. Zhong;Yong Kong
随着全球高速铁路的快速发展，为高速列车上的乘客提供公共宽带接入是非常有前景的。然而，由于无线电频道快速衰减和多普勒频移，用宽带通信支持高速（例如350公里/小时以上）移动用户一直是一个挑战。本文综述了为高速列车提供宽带接入的网络架构。本文提出了一种基于多模、多频带和多系统的接入体系结构。它由三部分组成：(1)列车网部分，在不改变自身终端的情况下，将数据传递给车厢内的大量用户；(2)地面网部分，处理来自不同运营商网络的流量；(3)地车网部分，连接列车网和地面网。此外，该体系结构可以支持高移动性，具有宽带宽、无缝切换、可扩展和经济高效的部署。
With the rapid development of high-speed railways all over the world, it is very promising to deliver public broadband access to passengers aboard high-speed trains. However, it has been a challenge to support high speed (e.g. above 350 km/h) mobile users with broadband communications, because of rapidly fading radio channels and Doppler frequency shift. This paper presents a review of network architectures providing broadband access to high-speed trains. A novel scheme referred as multimode multi-band and multi-system-based access architecture is proposed in this paper. It consists of three parts: (1) train network part that relays data to large number of users in carriages without changing their own terminals, (2) ground network part that deals with traffic from different operators' networks, and (3) ground-to-train network part that connects the train network and ground network. Moreover, this architecture could support high mobility with broad bandwidth, seamless handover, scalable and cost-effective deployment.