FSO as backhaul and energizer for drone-assisted mobile access networks
FSO as backhaul and energizer for drone-assisted mobile access networks
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DOI：
10.1016/j.icte.2019.12.002
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发表时间：
2020-06-01
期刊：
影响因子：
5.4
通讯作者：
Sun, Xiang
中科院分区：
文献类型：
--
作者：
Ansari, Nirwan;Wu, Di;Sun, Xiang
无人机基站（DBS）可以灵活地部署在某些区域（如热点和受灾地区），以加快地面基站（TBS）与用户之间的通信。为了增加DBS与其TBS之间的回程链路的容量，应用自由空间光（FSO）通信作为回程解决方案。但是，DBS及其TBS应在视距内（LoS）。因此，引入了一种新的DBS放置方法，以最大化服务用户的数量，同时保证DBS和其TBS之间的LoS。此外，为了延长DBS的悬停时间，我们建议部署光束以促进同时通信和充电。也就是说，从TBS传输到其DBS的光束不仅携带数据，而且携带能量。安装有太阳能电池板和FSO接收器的DBS同时接收光束携带的数据和能量。数值结果表明，使用光束充电和通信的DBS可以获得25%的额外悬浮时间的DBS和实现高网络吞吐量。(C)2020年韩国通信与信息科学研究所（KICS）。出版社：Elsevier B.V.
Drone mounted base stations (DBSs) can be flexibly deployed over some areas (such as hotspots and disaster struck areas) to speed up the communication between terrestrial base stations (TBSs) and users. In order to increase the capacity of the backhaul link between a DBS and its TBS, free space optical (FSO) communications is applied as the backhaul solution. However, the DBS and its TBS should be in line-of-sight (LoS). Thus, a new DBS placement method is introduced to maximize the number of served users while guaranteeing the LoS between the DBS and its TBS. In addition, in order to prolong the hovering time of a DBS, we propose to deploy an optical beam to facilitate simultaneous communications and charging. That is, an optical beam transmitted from a TBS to its DBS carries not only data but also energy. The DBS mounted with a solar panel and an FSO receiver receives both the data and energy carried by the optical beam simultaneously. Numerical results demonstrate that using an optical beam to charge and communicate with a DBS can gain 25% extra hovering time of the DBS and achieve high network throughput. (C) 2020 The Korean Institute of Communications and Information Sciences (KICS). Publishing services by Elsevier B.V.