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孙启明，宋绯.异构需求下无人机无线携能传输优化策略[J].陆军工程大学,2023,(4):24-31
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| 异构需求下无人机无线携能传输优化策略 |
| 孙启明，宋绯 |
| (陆军工程大学 通信工程学院，江苏 南京 210007) |
| 摘要:物联网设备电池容量有限且充电不便，无人机无线携能传输技术很好地解决了这个问题，可以实现能量和数据的同时传输。根据节点设备的异构能量需求，提出了基于全网满意度最大化的无人机位置和功率联合优化策略。将无人机与地面节点关联系数的优化问题建模成联盟形成博弈问题，通过设计合作准则，证明了其存在纳什均衡点。基于最大化满意度准则，探索无人机最佳悬停位置。在确定关联系数、无人机位置后，采用凸优化方法求解无人机与节点之间的发射功率。仿真结果表明，所提联合优化策略能够较大幅度地提升全网满意度。 |
| 关键词: 无人机 无线携能传输 异构需求 联合优化 |
| DOI：10.12018/j.issn.2097-0730.20220619001 |
| 投稿时间：2022-06-19 |
| 基金项目:国家自然科学基金（62061013） |
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| Optimization Strategy of UAV-Assisted SWIPT with Heterogeneous Requirements |
| SUN Qiming，SONG Fei |
| (College of Communications Engineering，Army Engineering University of PLA，Nanjing 210007，China) |
| Abstract: Aiming at the problems of the limited battery capacity and inconvenient charging of internet of things devices (IoTDs), UAV-assisted simultaneous wireless information and power transfer（SWIPT） can transmit energy and data simultaneously. Focusing on the heterogeneous energy requirements of IoTDs, a joint optimization strategy of hovering position and power transmission is proposed based on maximization of the satisfaction of the whole network. To begin with, the optimization of the correlation coefficient between UAVs and IoTDs can be modelled as a coalition formation game. It is proved that there is at least a Nash equilibrium point, by designing the cooperative criterion. Secondly, the optimal hovering position of UAVs is explored based on the criterion of satisfaction maximization. Lastly, since the correlation coefficient and hovering position are determined, the transmitting power of UAVs is figured out by convex optimization. The results of the simulation show that the proposed joint optimization strategy can greatly improve the satisfaction of the whole network. |
| Key words: UAV simultaneous wireless information and power transfer（SWIPT） heterogeneous requirements joint optimization |
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