基于BF-THPF负反馈调度算法研究

Research on Negative Feedback Scheduling AlgorithmBased on BF-THPF

在高速下行分组接入中,由于中继下用户差异性,很难保证基站用户和中继用户之间调度公平。通过对用户瞬时吞吐率、用户过往平均吞吐率等指标记录,合理利用它们设置调度优先级因子。特别是在中继节点处,通过负反馈,对优先级因子引入修正系数,改变中继节点调度概率,保证所有用户公平。搭建仿真平台,调度非实时业务,验证了用户平均吞吐率、公平性因子、边缘用户吞吐率等指标优于其他算法。

It is difficult to guarantee the fairness of scheduling between NB users and relay users in high-speed downlink packet access,due to the difference of relay users.The scheduling priority factor can be set by recording the instantaneous throughput and average throughput.Especially at the relay node,the negative feedback is used to modify priority factor and change the scheduling probability.Fairness of all users is guaranteed.The simulation platform is built to schedule non-real-time services.The results show that the average user throughput,fairness factor and edge user throughput are better than other algorithms.