密集场景下家庭基站间的资源分配新方案

A Novel Resource Allocation Scheme for Dense Femtocell Network

家庭基站的引入是为了改善室内覆盖,然而,随着家庭基站布置得越来越密集,家庭基站之间的干扰已经严重阻碍了系统性能的进一步提升。为此,利用图论的知识,将小区间互干扰信息建模为带权重的双向干扰图,并在此基础上提出一种低复杂度的资源分配方案,用于解决密集场景下用户随机分布时的家庭基站间的干扰控制问题。仿真结果表明,该算法能有效抑制小区间干扰,获得较高的频谱效率和较大的满意用户数。

Femtocell is introduced to improve indoor coverage.However,as femtocells are deployed more densely day by day,inter-femtocell interference（IFI） becomes increasingly serious,and this would reduce the system performance.A bi-direction weighted interference graph is constructed to model mutual interference between femtocells,and based on this a low-complexity resource allocation scheme is proposed to control the IFI in densely-deployed femtocell networks where the users are in random distribution.Simulation results show that the proposed scheme could suppress IFI effectively,achieve fairly high spectrum effectiveness and more satisfied users.