Optically Backhauled Moving Network for Local Trains: Architecture and Scheduling
Optically Backhauled Moving Network for Local Trains: Architecture and Scheduling
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DOI：
10.1109/access.2018.2844865
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发表时间：
2018-06
期刊：
影响因子：
3.9
通讯作者：
Yu Nakayama;K. Maruta;T. Tsutsumi;K. Sezaki
中科院分区：
文献类型：
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作者：
Yu Nakayama;K. Maruta;T. Tsutsumi;K. Sezaki
已经针对5G群组移动性讨论了蜂窝系统中的移动小区的概念，其中快速移动的平台（诸如火车）承载大量用户终端。移动小区采用无线回程的方式，其问题是带宽有限且不稳定。为了通过无线回传实现高带宽，铁路沿线需要沿着大量基站（BS）。因此，本文提出了本地列车的光学回程移动网络（OBMN）的概念，以有效地为本地列车提供回程链路。在OBMN中，自主BS（ABS）被设置在列车的顶部，并且经由光回程连接到网关。当车载用户终端移动时，列车上设置的ABS始终通过高带宽的光回程满足移动需求。通过检查东京郊区和城市地区的两个案例研究，证实了拟议架构和调度的有效性。与现有的静态部署相比，所需的BS的数量和部署成本减少了一半。
The concept of moving cell in cellular systems has been discussed for 5G group mobility where rapidly moving platforms such as trains carry a large number of user terminals. It has been considered to employ wireless backhaul for moving cell, the problem of which is its limited and unstable bandwidth. To realize high bandwidth with wireless backhaul, a large number of base stations (BSs) are required along the railway. Therefore, this paper proposes the concept of optically backhauled moving network (OBMN) for local trains to efficiently provide backhaul links for local trains. In the OBMN, an autonomous BS (ABS) is set on the top of a train and is connected to a gateway via optical backhaul. While the user terminals onboard move, the ABS set on the train always satisfies the moving demands through high-bandwidth optical backhaul. The effectiveness of the proposed architecture and scheduling was confirmed by examining two case studies in the suburban and urban areas in Tokyo. The number of required BSs and deployment cost are reduced by half with the proposed OBMN compared with the existing static deployment.