面向数据传输稳定性的无人机群频谱接入方法

Spectrum Access of UAV Group for Data Transmission Stability

针对频繁变化的无线通信环境中无人机群频谱资源使用问题,在保障无人机数据传输稳定的前提下,以降低无人机间用频冲突率、提升信道利用率和系统吞吐量为目标,设计了基于多用户非耦合排队频谱接入方法。该方法中无人机之间不需要信息交互和中心控制节点,仅需根据自身数据传输需求、互扰功率和历史信道使用状态信息来构建学习效益函数,生成频谱使用策略。仿真结果表明,所提方法在确保无人机数据传输稳定和兼顾无人机用频公平性的前提下,能有效降低无人机间用频冲突,提升无人机群吞吐量。

For the problem of spectrum resource usage of unmanned aerial vehicles(UAVs)in frequently-changing wireless communication environment,a spectrum access method based on multi-user uncoupled queuing is designed to reduce the collision rate of spectrum usage between UAVs and improve the channel utilization and system throughput on the premise of ensuring the data transmission stability of UAVs.In the proposed method,there is no information interaction between UAVs and no central controller in UAV group.The learning utility function is established based on its own data transmission demand,mutual interference power and historical channel usage state information to generate spectrum usage strategy.Simulation results show that the proposed method can effectively reduce conflict of spectrum usage between UAVs,and improve the throughput of UAV group while taking into account the fairness of spectrum usage for UAVs under the premise of ensuring data transmission stability of UAVs.