一种基于自适应资源分配的干扰协调方案

An Inter-cell Interference Coordination Scheme Based on Adaptive Resource Allocation in Heterogeneous Networks

在宏基站和微微基站(Macro-Pico)的异构网络中,资源分配可以有效地抑制基站间的干扰。基于降低用户的干扰和提高系统的吞吐量,提出一种自适应的频率资源分配方案。考虑分配给宏基站的每个资源块,如果距离宏基站较近的微微基站用户所受到的干扰高于最高限,采用不给宏基站分配这个资源块的方法,从而降低其对邻近微微基站用户的干扰,保证微微基站用户一定Qo S(Quality-of-Service)。系统仿真结果表明,与正交频率资源分配方案和共信道频率资源分配方案相比较,所提出的自适应频率资源分配方案降低了干扰和提高了系统的吞吐量。

The resource allocation plays a crucial role in suppressing interference in Macro-Pico heterogenous network（HetNet）. A new adaptive resource allocation scheme based on the quality-of-service（QoS）of users and the better performance with higher system throughput is proposed.Considering each resouce block（RB） allocated to macro eNodeB and if the QoS of the pico user near the macro eNodeB is above the limitatlon,the method of configuring the macro eNodeB with almost blank RB can reduce the interference to the pico user and ensure the QoS of the pico user.The simulation results show that the proposed scheme can obtain better performance with low interference and higher system throughput,compared with the co-channel frequency allocation scheme and the orthogonal frequency allocation scheme.