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非授权频段下无人机辅助通信的轨迹与资源分配优化

潘钰 胡航 金虎 雷迎科 冯辉 姜丽 张孟伯

潘钰, 胡航, 金虎, 雷迎科, 冯辉, 姜丽, 张孟伯. 非授权频段下无人机辅助通信的轨迹与资源分配优化[J]. 电子与信息学报. doi: 10.11999/JEIT240275
引用本文: 潘钰, 胡航, 金虎, 雷迎科, 冯辉, 姜丽, 张孟伯. 非授权频段下无人机辅助通信的轨迹与资源分配优化[J]. 电子与信息学报. doi: 10.11999/JEIT240275
PAN Yu, HU Hang, JIN Hu, LEI Yingke, FENG Hui, JIANG Li, ZHANG Mengbo. Trajectory and Resource Allocation Optimization for Unmanned Aerial Vehicles Assisted Communications in Unlicensed Bands[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT240275
Citation: PAN Yu, HU Hang, JIN Hu, LEI Yingke, FENG Hui, JIANG Li, ZHANG Mengbo. Trajectory and Resource Allocation Optimization for Unmanned Aerial Vehicles Assisted Communications in Unlicensed Bands[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT240275

非授权频段下无人机辅助通信的轨迹与资源分配优化

doi: 10.11999/JEIT240275
基金项目: 陕西省自然科学基础研究计划(2024JC-YBMS-514)
详细信息
    作者简介:

    潘钰:女,讲师,研究方向为无人机通信

    胡航:男,副教授,研究方向为无线移动通信

    金虎:男,教授,研究方向为无线移动通信

    雷迎科:男,教授,研究方向为无线移动通信

    冯辉:男,讲师,研究方向为无线移动通信

    姜丽:女,副教授,研究方向为通信抗干扰

    张孟伯:男,讲师,研究方向为通信抗干扰

    通讯作者:

    姜丽 jiangli17@nudt.edu.cn

  • 中图分类号: TN915

Trajectory and Resource Allocation Optimization for Unmanned Aerial Vehicles Assisted Communications in Unlicensed Bands

Funds: Shaanxi Province Natural Science Basic Research Program (2024JC-YBMS-514)
  • 摘要: 为解决无人机(UAV)在非授权频段下频谱资源受限的瓶颈问题,针对城市环境中UAV辅助监测的通信网络,该文提出一种下垫式(Underlay)接入机制下的高谱效联合优化方案。基于UAV的高机动性将空地信道建模为概率性视距(LoS)信道,考虑同信道干扰和UAV最大速度约束建立联合功率分配-轨迹规划的混合资源优化模型,在主用户占用频谱情况下使UAV在给定任务时间内实现监测数据的快速传输。原始问题为NP-hard的混合整数非凸问题,首先将其解耦为双层规划问题,采用松弛变量和逐次凸逼近(SCA)技术将轨迹问题转换为凸规划问题后实现有效求解。仿真验证了所提联合优化方案相比改进粒子群优化(PSO)方案能够提升最高约19%的频谱效率,且对于维度较高的轨迹规划问题,所提基于SCA的算法具有更低的算法复杂度和更快的收敛性。
  • 图  1  城市环境下基于Underlay机制的UAV通信网络模型

    图  2  不同主网络位置下UAV的最优轨迹

    图  3  ${T_{{\text{tot}}}} = 55$ s时的最佳UAV-WD接入策略和发射功率

    图  4  改进的PSO算法下的UAV最优轨迹

    图  5  两种算法的收敛性对比

    图  6  任务时长变化时不同方案的性能对比

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出版历程
  • 收稿日期:  2024-04-15
  • 修回日期:  2024-08-30
  • 网络出版日期:  2024-09-09

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