重庆邮电大学通信与信息工程学院,重庆 400065
王茜竹(1975年生),女;研究方向:移动通信基带算法、多址接入算法;E-mail:wangqz@cqupt.edu.cn
吴广富(1980年生),男;研究方向:移动通信基带算法、多址接入算法; E-mail:wugf@cqupt.edu.cn
纸质出版日期:2024-09-25,
网络出版日期:2024-07-22,
收稿日期:2024-05-09,
录用日期:2024-06-11
移动端阅览
王茜竹,卢诗萱,吴广富.面向UAV辅助的WSN信息年龄优化算法[J].中山大学学报(自然科学版)(中英文),2024,63(05):148-155.
WANG Qianzhu,LU Shixuan,WU Guangfu.Age of information optimization algorithm for UAV-assisted WSNs[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2024,63(05):148-155.
王茜竹,卢诗萱,吴广富.面向UAV辅助的WSN信息年龄优化算法[J].中山大学学报(自然科学版)(中英文),2024,63(05):148-155. DOI: 10.13471/j.cnki.acta.snus.ZR20240151.
WANG Qianzhu,LU Shixuan,WU Guangfu.Age of information optimization algorithm for UAV-assisted WSNs[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2024,63(05):148-155. DOI: 10.13471/j.cnki.acta.snus.ZR20240151.
提出了一种综合传感器能源供给、数据传输时效性和移动用户需求的系统平均信息年龄(AoI)优化算法。首先,采用无人机(UAV)辅助WSN来保障传感器的能量收集和数据传输。其次,引入AoI作为衡量指标,联合优化多设备调度、发射功率和UAV轨迹,建立了以最小化传感器的平均AoI为目标的非凸优化问题。然后,通过约束松弛、变量替换和连续凸逼近等方法,将非凸问题转化为凸问题,并设计了一种迭代式的平均AoI最小化算法。仿真结果表明:该算法在满足移动用户体验的同时有效提升了传感器数据新鲜度。
It's proposed that a systematic average age of information optimization algorithm that integrates sensor energy supply, data transmission timeliness, and mobile user requirements. Firstly, an unmanned aerial vehicle assisted WSN is used to secure the energy collection and data transmission from the sensors. Secondly, AoI is introduced as a measure to jointly optimize multi-device scheduling, transmit power and UAV trajectories to establish a non-convex optimization problem with the objective of minimizing the average AoI of the sensors. Then, the non-convex problem is transformed into a convex one by means of constraint relaxation, variable substitution and successive convex approximation, and an iterative average AoI minimization algorithm is designed. Finally, the algorithm is verified through simulation, and the results show that the algorithm effectively improves the freshness of the sensor data while satisfying the mobile user experience.
无线传感器网络无人机信息年龄能量收集
wireless sensor networksunmanned aerial vehicleage of informationenergy harvesting
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