摘要
针对车联网的交叉路口场景,提出了基于无人机(Unmanned Aerial Vehicle,UAV)扮演路侧单元的通信模型。以要求的时延和回程链路容量为约束条件,先构建了关于UAV三维位置(水平位置和高度)和UAV功率分配的功耗优化问题,推导车辆用户所需的最小速率;再利用序列二次规划求解优化问题;最后通过仿真分析满足时延约束条件的超时概率和车辆用户传输的数据包尺寸对UAV功耗的影响。性能分析表明,在时延很小(10^(-5)s)时,数据包尺寸的增加提高了回程链路负载率。仿真数据可为部署无人机辅助车联网提供参考。
For intersection scenario of vehicle-to-everything,communication model based on Unmanned Aerial Vehicle(UAV)acting as roadside unit is proposed in this paper.With delay and backhaul link capacity as constraints,power optimization problem of UAV is constructed,which is about three-dimensional position(horizontal position and height)and power allocation of UAV.Then minimum rate required by the vehicle user to is derived.The problem is solved by sequential quadratic programming.Finally,the influence of the violation probability and the packet size transmitted by the vehicle user on the power consumption of UAV is analyzed by simulation.Performance analysis shows that load ratio of backhaul link increase with the increase of packet size when required delay is very small.The results provide the reference for deploying UAVs-aided vehicle-to-everything.
作者
杨惠
YANG Hui(College of Media Engineering,Lanzhou University of Arts and Science,Lanzhou 730000,China)
出处
《中央民族大学学报（自然科学版）》
2024年第2期73-80,共8页
Journal of Minzu University of China(Natural Sciences Edition)
基金
2022年甘肃省高等学校创新基金项目(2022A-171)
2023年甘肃省高等学校创新基金项目(2023B-256)
甘肃省2024年度重点人才项目。
