一种提高小区干扰协调中用户公平性的载波调度算法

Inter-Cell Interference Coordination Carrier Scheduling Algorithm for Improving Fairness

针对LTE-Advanced系统中小区干扰协调的用户公平性问题,提出一种基于用户优先级的比例公平调度算法。该算法通过引入用户优先级因子来调节小区边缘用户与小区中心用户的载波分配,进而在保障系统吞吐量的前提下改善频谱资源受限的小区边缘用户的公平性。仿真结果表明,该算法在以系统吞吐量下降了0.7%的代价下使小区边缘平均用户数据速率提高了90%以上。

To improve the fairness of inter-cell interference coordination between ＂cell center＂ users and ＂cell edge＂ users,a user priority based proportional fair carrier scheduling algorithm is proposed in this paper.The user priority factor is introduced to adjust the carrier assignment between these two types of users without sacrificing the system throughput while improving the fairness for ＂cell edge＂ users with limited frequency resources.The simulation result shows that the average data rate of ＂cell edge＂ users has been increased by 90%,while the system throughput has been decreased by 0.7% as the cost.