无线电工程2024，Vol.54Issue(7)：1803-1815,13.DOI:10.3969/j.issn.1003-3106.2024.07.024
无人机辅助移动边缘计算的卸载决策与功率分配联合优化
Joint Optimization of Unloading Decision and Power Allocation for UAV-assisted Mobile Edge Computing
摘要
Abstract
Due to the limited computing power of Mobile Device(MD),there is immense pressure when executing real-time and computationally intensive tasks.Therefore,this heterogeneous network based on Non-Orthogonal Multiple Access(NOMA)technology with double-layer Unmanned Aerial Vehicle(UAV)assisted Mobile Edge Computing(MEC)is studied.UAV equipped with edge server can cooperate with base stations to provide computing and unloading service for MD.A communication model and a computational model are established for this heterogeneous network.Then,the energy consumption and time weighting and minimization problems are proposed,and a joint optimization algorithm for mission unloading and MD transmitting power allocation is developed.The original problem is divided into two subproblems,then an Improved Binary Particle Swarm Optimization(IBPSO)algorithm is used to solve the mission unloading decision subproblem,and an Improved Atomic Orbit Search Algorithm(IAOS)is used to solve the MD transmitting power allocation subproblem.The simulation results show that compared with several benchmark algorithms,the weighted sum of time and energy consumption of the proposed algorithm decreases by 29.2％,29.2％and 33.2％respectively in the circumstances of different maximal transmitting power,computing cycle per bit and MD task size.At the same time,the algorithm converges within 20 iterations and has preeminent ability of convergence.关键词
移动边缘计算/异构网络/无人机/元启发式算法/非正交多址接入Key words
MEC/heterogeneous network/UAV/metaheuristic algorithm/NOMA分类
信息技术与安全科学引用本文复制引用
诸锦涛,李晖,宋端正,王昊,周乐佳..无人机辅助移动边缘计算的卸载决策与功率分配联合优化[J].无线电工程,2024,54(7):1803-1815,13.基金项目
国家自然科学基金(61661018) （61661018）
江苏省基础研究计划青年基金项目(BK20210064) （BK20210064）
江苏省双创博士人才项目(JSSCBS20210863) （JSSCBS20210863）
江苏省研究生科研与实践创新计划基金项目(SJCX23_0379)National Natural Science Foundation of China(61661018) （SJCX23_0379）
Youth Foundation Project of Basic Research Program of Jiangsu Province(BK20210064) （BK20210064）
Entrepreneurship and Entrepreneurship Doctoral Talent Project of Jiangsu Province(JSSCBS20210863) （JSSCBS20210863）
Postgraduate Research & Prac-tice Innovation Program of Jiangsu Province(SJCX23_0379) （SJCX23_0379）
