分层网络频谱资源分配方案  

Spectrum Resource Allocation Scheme in Tiered Networks

作　　者：张文健[1] 田茂[1] 何浩[1] 沈祖康[2] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430079 [2]电信科学技术研究院无线移动创新中心,北京100191

出　　处：《北京理工大学学报》2012年第2期174-178,共5页Transactions of Beijing Institute of Technology

基　　金：国家科技重大专项资助项目(2009ZX03003-005);北京市自然科学基金资助项目(60202005)

摘　　要：提出一种频谱资源分配方案,以提升分层毫微微小区网络的期望吞吐量.该方案为每层下行传输分配部分共享频谱资源,在单个用户期望吞吐量满足服务质量需求时,通过动态调整共享频谱资源分配比例,能够最大化网络期望吞吐量.为进一步获得每层下行传输的期望吞吐量,基于Nakagami-m衰落信道推导了每层用户下行接收信干噪比的累积分布函数.理论分析和仿真表明,该频谱资源分配方案能够有效提升网络期望吞吐量,但服务质量需求参数的增长限制了吞吐量的提升.A spectrum resource allocation scheme for improving the expected network throughput in tiered femto-cell networks was proposed.The scheme distributed partial shared spectrum resource to downlink transmissions in macrocell and femtocells.With the limitation that expected single-user throughput meets service of quality（QoS） requirement,the expected network throughput was maximized by adjusting the allocation ratio of shared spectrum resource dynamically.Furthermore,to obtain the per-tier expected throughput of downlink transmissions,the cumulative distribution functions（CDF） of received signal to interference plus noise ratio（SINR） were derived with Nakagami-m fading channels.Both theoretical analysis and simulations indicate that the resource allocation scheme improves the expected network throughput,but the degree of improvement is limited by the increase of QoS requirement parameter.

关 键 词：分层网络 毫微微小区 频谱资源分配 期望吞吐量 信干噪比 

分 类 号：TN929.5[电子电信—通信与信息系统]