无人机辅助车联网的网络传输链路优化

Optimization of network transmission link in UAV assisted vehicle network

无人机(UAV)通信技术的快速发展与智能车联网应用需求的极速增长促进了无人机辅助车联网系统的产生与发展。在无人机辅助车联网系统中,如何节省能量的同时最大化系统性能对于能量有限的节点十分重要。基于此,本文主要考虑无人机辅助车联网通信过程中如何选择最优的通信网络链路,从而最大化能量效率的问题。首先建立通信网络链路选择问题为混合整数规划问题,然后提出基于能量效率最大化的网络传输链路优化算法获得最优的传输链路及对应的能量分配,最后通过数值实验仿真验证了所提算法的有效性。

The rapid development of Unmanned Aerial Vehicle(UAV) based communication technology and the rapid growth of intelligent vehicle networking application promote the emergence and development of UAV assisted vehicle networking system.In UAV assisted vehicle networking system,how to save energy and maximize system performance is significant for nodes with limited energy.This paper mainly considers how to choose the optimal communication network link to maximize energy efficiency in the process of UAV assisted vehicle network communication.Firstly,a mixed integer programming model is established for link selection in communication networks.Then a network transmission link optimization algorithm in terms of energy efficiency maximization is proposed to obtain the optimal transmission link and the corresponding energy allocation.Finally,the effectiveness of the proposed algorithm is verified by numerical simulation.