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여찬일,허영순,류지형,이문섭,강현서,박시웅,김계은,김성창,Yeo, C.I.,Heo, Y.S.,Ryu, J.H.,Lee, M.S.,Kang, H.S.,Park, S.W.,Kim, K.E.,Kim, S.C. 한국전자통신연구원 2018 전자통신동향분석 Vol.33 No.6
With the massive increase in bandwidth for wireless communications, free space optical (FSO) communication has attracted significant interest owing to its outstanding strengths over conventional radio frequency wireless communication such as a wide bandwidth, unlicensed spectrum, low power consumption, small size, electromagnetic interference immunity, long-range propagation, and improved security. In recent years, FSO technology has been studied intensively for use in terrestrial and underwater autonomous and unmanned mobile systems, a rapidly growing application area, including robots, drones, unmanned aerial vehicles, autonomous vehicles, unmanned trains, and unmanned submarines. In this report, we review the recent trends and key technologies for the mobile FSO system, and introduce our drone-based mobile FSO system, which is currently under development.
여찬일,허영순,류지형,박시웅,김성창,강현서,이길행,Yeo, C.I.,Heo, Y.S.,Ryu, J.H.,Park, S.W.,Kim, S.C.,Kang, H.S.,Lee, G.H. 한국전자통신연구원 2020 전자통신동향분석 Vol.35 No.2
In recent years, the unmanned aerial vehicle (UAV) assisted mobile free space optical (FSO) communication technique has attracted considerable attention regarding its aims to provide improved communication conditions for fixed-to-fixed FSO network and promising fronthaul and backhaul solutions for 5G+ wireless networks. This can be attributed to its outstanding advantages such as fast deployment and flexible network configuration. The UAV-assisted mobile FSO system can be used to provide cost-effective internet services in rural and remote areas and in hotspot areas that are characterized by increased data traffic. Additionally, it can be used to provide secure communication services under emergency circumstances. In this report, we review recent R&D trends in wireless network technology employing the UAV-assisted mobile FSO technique and key technologies for mobile FSO wireless networks. Furthermore, we introduce drone-based mobile FSO terminals and control systems that we have developed.