2021_tvt_JointMCCO_UAV.pdf (5.86 MB)
Joint mobility, communication and computation optimization for UAVs in air-ground cooperative networks
journal contribution
posted on 2023-06-09, 23:05 authored by Jianshan Zhou, Daxin Tian, Zhengguo ShengZhengguo Sheng, Xuting Duan, Xuemin ShenUnmanned aerial vehicles (UAVs) play a significant role in various 5G or Beyond-5G (B5G)-enabled Internet-of-Things (IoT) applications. However, the UAV performance in an air-ground cooperative network is significantly affected by its mobility and air-to-ground (A2G) communication and computation behaviors. In this paper, a UAV-oriented computation offloading system is investigated, where the UAV desires to complete its onboard computation demands with the assistance of a ground edge-computing infrastructure, i.e., a road-side unit (RSU). The objective is to maximize the energy efficiency of the UAV. Specifically, a non-convex constrained optimal control problem is formulated to optimize the overall energy efficiency of UAV by jointly considering the coupled effects of UAV's longitudinal mobility, A2G communication, and computation dynamics. To address the coupled complexity and non-convexity of the original problem, a primal decomposition approach is developed to transform the problem into a convex subproblem and a primary problem, and then a closed-form optimal transmission power control is derived by solving the subproblem, which is dependent on mobility information. By embedding the closed-form optimal power control into the primary problem, a gradient projection-based iterative algorithm is proposed to obtain a joint optimal solution for both the longitudinal acceleration control and the power control, the feasibility and convergence of which is also theoretically proven. Extensive simulations have been conducted to validate the effectiveness of the proposed method in terms of constraint satisfaction and convergence speed, and comparative results also demonstrate that it can outperform other benchmark methods in terms of global energy efficiency.
History
Publication status
- Published
File Version
- Accepted version
Journal
IEEE Transactions on Vehicular TechnologyISSN
0018-9545Publisher
IEEEExternal DOI
Issue
3Volume
70Page range
2493-2507Department affiliated with
- Engineering and Design Publications
Notes
© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2021-02-16First Open Access (FOA) Date
2021-02-23First Compliant Deposit (FCD) Date
2021-02-16Usage metrics
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