中文摘要：

在由Device-to-Device（D2D）通信系统和传统蜂窝通信系统组成的混合网络中，提出了一种解决D2D用户组间干扰问题的新方案。目的是在D2D用户组间干扰（IuI）最小化与频率复用因子（FRF）最大化之间建立一种平衡。首先，根据小区边缘D2D用户的地理位置，把这些D2D用户分成不同的D2D用户组；然后，分配正交资源和非正交资源给不同的D2D用户组；最后，根据D2D组内用户所分配的不同资源，应用不同的资源分配算法。仿真结果表明，方案能够减小小区阻塞率，特别是在小区边缘的D2D用户组处于满负载工作状态时，吞吐量相应得到提升。

英文摘要：

In this paper, we propose a novel inter-users＇ group interference coordination （IUIC） scheme for a hybrid orthogonal frequency division multiple access （OFDMA） system that consists of the Device-to-Device（D2D） commu- nication and the conventional cellular communication. The novel radio resource allocation scheme aims to balance be- tween IUI minimization and frequency reuse factor （FRF） maximization. Firstly, the cell-edge D2D user equipments （UEs） are divided into a different group based on users＇ geometry, then the groups are allocated available band- width, which includes both orthogonal resource and non-orthogonal resource. Next, different allocation strategies are applied correspondingly to different resource. Simulation results show that the proposed scheme can significantly re- duce blocking probability, especially for networks with over-loaded spots in the cell-edge D2D UEs＇ group.