LTE-Advanced载波聚合中的无线资源管理研究

摘要

载波聚合是LTE-Advanced系统的关键技术之一。文章中重点介绍了载波聚合中的移动性无线资源管理（RRM：Radio Resource Manage-ment）机制。在引入该机制的基础上,传统的正比公平（PF：proportional fair）调度算法并不能够很好地保证用户之间在资源分配方面的公平性,因此提出了Balanced PF（BPF）算法。从系统级仿真结果可以看出,与传统的PF算法相比,BPF算法可以提升边缘用户的吞吐量性能,改善用户之间的公平性。%Carrier aggregation is one of the key technologies of LTE-Advanced.This paper first provides an overview of the radio resource management mechanisms based on UE mobility in CA.Based on the RRM mechanisms,the original proportional fair（PF） scheduling algorithm can＇t ensure the allocation fairness among UEs,and then balanced PF（BPF） algorithm is proposed.From the system level simulation results,we can draw a conclusion that BPF can enhance the performance of cell-edge users and improve the fairness among users.