长期演进系统中改进的软频率复用方案

An improved soft frequency reuse scheme in long term evolution networks

给出改进型软频率复用(SFR)方案的目的在于提高边缘区域的性能,改善传统SFR无法适应长期演进(LTE)系统中业务的动态分布和频谱分配灵活性低的缺点.该方案将一部分频谱资源划分为共享频段,边缘区域对其有较高的优先权.仿真结果表明,改进方案能够有效改善边缘区域性能,提高了频谱分配的灵活性.

In this paper, a modified soft frequency reuse （SFR） scheme is given to improve the performance of edge area and to mitigate the shortcomings of traditional SFR such as low business agility which is unable to adapt to dynamic spectrum allocation and distribution in long term evolution（ LTE） system. In our method, a part of spectrum resource is allocated as the shared fre-quency band, and the edge region has higher priority. The simulation results show that the proposed method can effectively improve the throughput for those users at the edge area and increase the flexibi l ity of spectrum allocation.