面向空中可重构智能表面辅助无线通信的朝向感知控制与轨迹设计
Orientation-Aware Control and Trajectory Design for Aerial RIS-Assisted Wireless Communications
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中文总结 AI 辅助
针对ARIS辅助无线通信中无人机位置-朝向耦合影响通信质量的问题，提出朝向感知框架，结合通信引导轨迹规划与非线性模型预测控制，显著提升用户及网络吞吐量。
中文摘要 AI 辅助
空中可重构智能表面（ARIS）通过将可重构超表面与空中机动性相结合，能够在受阻环境中增强无线连接。然而，在实际部署中，可重构智能表面（RIS）被刚性安装在多旋翼无人机（UAV）上，这产生了直接影响通信质量的耦合位置-朝向动力学。由于RIS性能对朝向高度敏感，点质量或朝向不变模型可能导致过于乐观的性能估计。本文提出了一种朝向感知的ARIS框架，该框架明确考虑了无人机动力学、执行器限制和依赖于朝向的信道。所提出的方法将通信引导的参考轨迹规划器与非线性模型预测控制相结合，以实现动态可行的轨迹跟踪和有利的RIS朝向，同时采用轻量级波束成形和RIS相移更新。仿真表明，考虑朝向可将用户吞吐量提高13.77%，而所提出的联合通信更新相比仅相移优化可将网络吞吐量提高28%，相比仅波束成形优化至少提高2.5倍。这些结果凸显了在ARIS辅助无线系统中朝向感知建模和联合通信-控制设计的重要性。
英文摘要
Aerial Reconfigurable Intelligent Surfaces (ARISs) can enhance wireless connectivity in obstructed environments by combining reconfigurable metasurfaces with aerial mobility. However, in practical deployments, the Reconfigurable Intelligent Surface (RIS) is rigidly mounted on a multi-rotor Unmanned Aerial Vehicle (UAV), which creates coupled position-orientation dynamics that directly affect communication quality. Since RIS performance is highly sensitive to orientation, point-mass or orientation-invariant models may lead to optimistic performance estimates. This paper proposes an orientation-aware ARIS framework that explicitly accounts for UAV dynamics, actuation limits, and orientation-dependent channels. The proposed approach combines a communications-guided reference trajectory planner with a Nonlinear Model Predictive Control for dynamically feasible trajectory tracking and favorable RIS orientation, while employing lightweight beamforming and RIS phase-shift updates. Simulations show that accounting for orientation improves user throughput by 13.77%, while the proposed joint communication updates improve network throughput by 28% over phase-shift-only optimization and by at least a factor of 2.5 over beamforming-only optimization. These results highlight the importance of orientation-aware modeling and joint communication-control design in ARIS-assisted wireless systems.
发表机构
- Mohammed VI Polytechnic University（穆罕默德六世理工大学）
- Ricerca sul Sistema Energetico (RSE) S.p.A.（意大利能源系统研究公司（RSE））
- Czech Technical University in Prague（捷克布拉格技术大学）
机构由 AI 辅助整理，请以论文原文为准。
