无人机中继通信系统中信息传输调度算法研究

Scheduling Algorithms for Message Transmission Over UAV Communication Relay

研究了将无人机作为通信中继平台对战区实施无线通信覆盖时的信息传输调度算法。首先介绍了几种基于信息特征(如优先级、长度、信息在系统总的占用时间等)的调度算法。为了克服传统调度算法的缺点,提出了一种改进的动态优先权调度(DPS,Dynam ic Priority Scheduling)算法,将信息的优先级与接受系统服务的时间联系起来,动态调整信息的优先权,从而获得较小的系统平均时延,而且对不同信息又不失“公平性”。最后给出了几种调度算法的仿真结果,并对结果进行了分析。分析表明,动态优先权调度算法是一种比较适合无人机通信中继的实用调度算法。

This paper addresses scheduling algorithms in message transmissions using UAV as communication relay to cover the war zone. First,we introduce several general algorithms,which are scheduled based on the characteristic of information,such as priority,length,and time of information in system.Then,we propose dynamic priority scheduling algorithms,which can associate information priority with the system serving time,and dynamically adjust the information priority,so that the system has less system average delay and is fair for various kinds of information.At last,we present the simulation results of these scheduling algorithms.And the simulation results show that the dynamic priority scheduling algorithms is effective and efficient for UAV communication relay.