| 摘要: |
| 近年来，无人机（Unmanned Aerial Vehicle,UAV）辅助的自由空间光（Free-space Optical,FSO）通信系统引起了广泛关注。然而，现有研究中大多只关注系统的通信性能。为此，对UAV辅助的FSO通信系统的通信、感知和控制一体化调度策略展开研究。首先，依据控制理论建立了一个感知-控制模型。同时，考虑到大气损耗、大气湍流、几何损耗和到达角抖动因素的影响，建立了一个FSO通信信道模型。在此基础上，分析了UAV运动控制与径向位移之间的关联性，进而实现了通信和控制之间的有效链接。进一步地，假设基站能够获取瞬时信道状态信息（Channel State Information,CSI）或统计CSI，分别设计了相应的感知-控制模式激活的速率阈值。最后，提出了一种实现通信、感知和控制一体化调度的策略。数值结果表明，与传统的时间触发策略相比，所提出的一体化调度策略达到了相近的通信和控制性能，但降低了52.46%的感知功耗。 |
| 关键词: FSO通信 通感控一体化调度 无人机（UAV） |
| DOI：10.20079/j.issn.1001-893x.240705002 |
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| 基金项目:江苏省自然科学基金项目（BK20221328）；广东省空天通信与网络技术重点实验室开放课题 |
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| Integrated Scheduling of Communication,Sensing,and Control for UAV-aided FSO Systems |
| LU Dingshan,YU Yinchang,SU Daopeng,WANG Jinyuan |
| (1.College of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;2.Guangdong Provincial Key Laboratory of Aerospace Communication and Networking Technology,Harbin Institute of Technology,Shenzhen 518055,China;1.College of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;2.Guangdong Provincial Key Laboratory of Aerospace Communication and Networking Technology,Harbin Institute of Technology,Shenzhen 518056,China;1.College of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;2.Guangdong Provincial Key Laboratory of Aerospace Communication and Networking Technology,Harbin Institute of Technology,Shenzhen 518057,China;1.College of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;2.Guangdong Provincial Key Laboratory of Aerospace Communication and Networking Technology,Harbin Institute of Technology,Shenzhen 518058,China) |
| Abstract: |
| Recently,unmanned aerial vehicle(UAV)-aided free-space optical(FSO) communication has attracted widespread attentions.However,most of the existing research focuses on communication performance only.The authors investigate the integrated scheduling of communication,sensing,and control for UAV-aided FSO communication systems.Initially,a sensing-control model is established via the control theory.Moreover,an FSO communication channel model is established by considering the effects of atmospheric loss,atmospheric turbulence,geometrical loss,and angle-of-arrival fluctuation.Then,the relationship between the motion control of the UAV and radial displacement is obtained to link the control aspect and communication aspect.Assuming that the base station has instantaneous channel state information(CSI) or statistical CSI,the thresholds of the sensing-control pattern activation are designed,respectively.Finally,an integrated scheduling scheme for performing communication,sensing,and control is proposed.Numerical results indicate that,compared with conventional time-triggered scheme,the proposed integrated scheduling scheme obtains comparable communication and control performance,but reduces the sensing consumed power by 52.46%. |
| Key words: FSO communications integrated scheduling of communication,sensing,and control unmanned aerial vehicle(UAV) |
