基于状态反馈的无人机通信接入拥塞动态控制研究

Research on Dynamic Control of UAV Communication Access Congestion Based on State Feedback

摘要:

为解决复用信道内的通信接入拥塞问题，需要控制无人机通信链路中数据信息样本的实时累积量，故基于状态反馈研究无人机通信接入拥塞动态控制方法。建立信道复用模型，并借助MAC连接协议，定义通信数据包，实现对无人机集群通信节点接入行为的处理；按照状态反馈模型完善状态观测器结构，求解通信数据的离散化反馈表达式，在划分通信优先级条件的同时，确定无人机队列的实时调度关系，完成无人机通信行为控制；根据动态阈值窗口定义条件，确定通信链路长度，再联合相关通信数据样本，计算链路时延量的具体数值，完成动态控制方法的设计；实验结果表明，应用设计方法可将通信链路中数据信息样本实时累积量控制在5.7×1013Mb之下，能够较好解决复用信道内的通信接入拥塞问题，符合实际应用需求。

Abstract:

In order to solve the problem of communication access congestion in the multiplexed channel, it is necessary to control the real-time accumulation of data information samples in the UAV communication link, so the dynamic control method of UAV communication access congestion is studied based on state feedback. Establish a channel multiplexing model, and use MAC connection protocol to define communication data packets to achieve the processing of the access behavior of UAV cluster communication nodes. The structure of the state observer is improved according to the state feedback model, and the discrete feedback expression of the communication data is solved. The real-time scheduling relationship of the UAV queue is determined while dividing the communication priority conditions, and the UAV communication behavior control is completed. According to the conditions defined by the dynamic threshold window, determine the length of the communication link, and then combine relevant communication data samples to calculate the specific value of the link delay, and the design of the dynamic control method is completed. The experimental results show that the real-time cumulant of data information samples in the communication link can be controlled under 5.7 × Under 1013Mb by using the design method, which can better solve the communication access congestion problem in the multiplexed channel and meet the practical application requirements.