【摘要】 随着超密集网络的发展,干扰问题成为限制系统性能的主要挑战。基于图论的图着色频率分配方案已经较好地改善了小基站簇内频率正交分配导致的频率浪费的问题,但该方案并没有考虑超密集多层异构网络中小基站的多样性及负载情况。考虑到小基站之间的干扰关系、多样性及负载情况,提出了一种适用于超密集多层网络的基于图论的动态频率复用方案,该方案可以更加公平地分配小基站频带,降低系统干扰,并提高低速率用户的吞吐性能。更多还原

【Abstract】 With the development of ultra-dense networks,interference problem has become the main challenge to the system.The frequency allocation strategy based on graph coloring solved the frequency waste in the cluster-based orthogonal frequency allocation strategies to some extent. However,the strategies mentioned above didn’t take the variety and load condition of the small base-stations into consideration. By considering the mutual interference relationship,variety and load condition of the small basestations,One for ultra-dense multi-layer network based on dynamic frequency reuse scheme graph theory is proposed. The proposed strategy can more fairly allocate the frequency resource to the small base-stations and improve the low-rate users’ performance.更多还原