5G蜂窝网中基于部分频率复用的资源复用算法

Resource reuse algorithm based on partial frequency reuse in 5G cellular network

针对5G中设备与设备间(Device-to-Device,D2D)用户(Device User Equipment,DUE)和蜂窝用户(Cell User Equipment,CUE)共存的通信场景,文中提出一种基于频率复用的无线频谱资源复用算法。在7小区模型下,该算法将小区划分为中心区域和边缘区域,将有限的频率资源分为2对,根据用户所处的位置,合理分配给DUE和CUE。该算法根据3GPP标准规定的发射功率、路径损耗模型对DUE和CUE的可获得吞吐量进行仿真。仿真结果表明,当中心区域占比为0.7时,CUE可以获得最大的吞吐量;中心区域占比为0.6时,DUE可以获得最大的吞吐量。

In allusion to the coexisting communication scene of D2D(device⁃to⁃device)DUE(device user equipment)and CUE(cellular user equipment)in 5G,a wireless spectrum resource reuse algorithm based on frequency reuse is proposed.In the seven⁃housing⁃estate model,the housing estate is divided into center area and edge area by means of the algorithm.The limited frequency resources are divided into two pairs,and they can be allocated to DUE and CUE reasonably according to users′living position.The simulation of the obtainable throughput of DUE and CUE are performed with this algorithm according to the transmitted power and path loss model specified in 3GPP standard.The simulation results show that CUE can get the maximum throughput when the proportion of central area is 0.7,and DUE can get the maximum throughput when the proportion of central area is 0.6.