The invention provides a dual unmanned aerial vehicle (UAV) energy collection and data transmission system based on NOMA and a transmission method thereof, one UAV is specially responsible for wireless energy transmission, and the other UAV is responsible for data collection, namely, UAV-ET and UAV-DC; the UAV-ET is responsible for carrying out wireless charging on predetermined Internet of Things equipment by utilizing a WPT technology; then, the Internet of Things device collects energy and sends its information to the UAV-DC by applying a NOMA technology. According to the invention, alternating optimization and a continuous convex programming method are adopted, and under constraint conditions such as the maximum flight speed and the minimum safety distance of the unmanned aerial vehicle and energy acquisition of each piece of Internet of Things equipment in a limited unmanned aerial vehicle flight task period, the unmanned aerial vehicle flight task period is optimized. The minimum total data transmission rate of a user is maximized by jointly optimizing the three-dimensional tracks of the two unmanned aerial vehicles and the scheduling and transmission power of the Internet of Things equipment, so that the system time delay is reduced, the system complexity is reduced, the lower limit of the data transmission rate in the system is improved, and the achievable total data rate is further improved.
本发明提供一种基于NOMA的双无人机能量收集和数据传输系统及其传输方法,一架无人机专门负责无线能量传输,另一架负责数据采集,即UAV‑ET和UAV‑DC;UAV‑ET负责通过利用WPT技术为预定的物联网设备进行无线充电;随后,物联网设备收集能量并通过应用NOMA技术将其信息发送给UAV‑DC。本发明采用交替优化,以及连续凸规划方法,在无人机的最大飞行速度、最小安全距离和每个物联网设备在有限的无人机飞行任务期间的能量获取等约束条件下,通过联合优化两个无人机的三维轨迹、物联网设备的调度和传输功率以实现用户最小总数据传输速率最大化,以减少系统时延、降低系统复杂度,提高系统中的数据传输速率下限,进而提高可实现的总数据速率。
NOMA-based dual-unmanned aerial vehicle energy collection and data transmission system and transmission method thereof
基于NOMA的双无人机能量收集和数据传输系统及其传输方法
2024-01-09
Patent
Electronic Resource
Chinese
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