针对现有航空Ad hoc网络的媒体接入控制(media access control,MAC)协议存在信道资源分配缺乏公平性的问题,该文提出一种优先级权重速率控制(priority weighted rate control,PWRC)算法。该算法在MAC层上采用加权队列模型,利用业务的优先级及权重值共同控制业务的降速因子,达到在保证高优先级业务服务质量(quality of service,QoS)的同时提升信道资源利用的公平性。仿真结果表明:与现有MAC协议相比,使用该方法时相同优先级业务的公平性指数接近理论上限1,对信道资源的利用率最高可提升40%;同时,可降低相同优先级业务平均端到端延时及延时抖动。 Aiming at the lack of fairness of channel resource allocation in the media access control (MAC) protocol of existing Ad Hoc networks, a priority weighted rate control (PWRC) algorithm is proposed. The algorithm uses a weighted queue model at the MAC layer, and uses the service priority and weight value to jointly control the service deceleration factor to improve the channel resource utilization while guaranteeing the quality of service (QoS) of high-priority services Fairness. The simulation results show that compared with the existing MAC protocol, the fairness index of the same priority service using this method is close to the theoretical upper limit of 1, and the utilization rate of channel resources can be increased by 40% at the most. Meanwhile, the average priority of the same priority service can be reduced End-to-end delay and delay jitter.