面向通信负载均衡的轨迹优化技术研究

Research on trajectory optimization technology for communication load balancing

摘要:

应急救灾场景下，无人机可以作为应急通信设备搭建应急通信网络。在多无人机构建的应急通信系统中，无人机的负载情况会影响地面用户的通信质量。面向通信负载均衡，对多无人机通信系统中无人机的轨迹优化技术进行了研究。提出了无人机轨迹优化模型，分别设计了基于用户位置和基于无人机负载的虚拟力场计算公式。以虚拟力场为依据，提出了无人机轨迹控制方法，给出了详细无人机运动控制流程。仿真实验验证了算法在无人机轨迹优化的有效性，平衡了无人机之间的用户负载，提高了用户的通信吞吐量。

Abstract:

In the scene of emergency relief, UAV (Unmanned Aerial Vehicle) can be used as emergency communication equipment to build emergency communication network. In the emergency communication system constructed by multiple UAVs, the load of UAVs will affect the communication quality of ground users. For communication load balancing, the trajectory optimization technology of UAV in multi UAV Communication system is studied. The virtual force field based on user position and the virtual force field based on UAV load are proposed, and the calculation formula of virtual force field is given. Based on the virtual force field, the motion control method of UAV is proposed, and the detailed motion control flow of UAV is given. Simulation results verify the effectiveness of the algorithm in UAV trajectory optimization, balance the user load between UAVs, and improve the user's communication throughput.