LTE_A家庭基站干扰协调方案的研究  

RESEARCH ON INTERFERENCE COORDINATION SCHEME IN LTE_A FEMTOCELL NETWORKS

作　　者：王伟平[1] 刘金虎[1] 梁文莉[1] 

机构地区：[1]兰州交通大学电子与信息工程学院,甘肃兰州730070

出　　处：《计算机应用与软件》2016年第1期124-126,162,共4页Computer Applications and Software

摘　　要：在LTE-A(Long Time Evolution_Advanced)通信系统中,据预测有50%的语音业务和70%的数据业务都发生在室内[1]。因此解决室内网络覆盖问题是LTE_A系统成功的关键之一。家庭基站的出现虽然能够很好地解决室内覆盖问题,但是在家庭基站引进的同时却带来了非常复杂的干扰问题[2]。针对家庭基站与宏蜂窝基站在LTE_A系统中产生的干扰问题,提出一种以动态频率复用与部分功率控制相结合的干扰协调方案来解决宏基站与家庭基站间的跨层干扰问题。通过Matlab建模仿真,表明该方案能很好地解决跨层干扰问题,改善LTE_A系统性能,尤其是在频率利用率方面有很大的提升。In LTE_A communication system, according to the forecast that 50% voice services business and 70% of data services business are the indoor occurred. Therefore, to solve indoor network coverage problem is one of the key to the success of LTE_A system. Though the emergence of femtocell can well solve the problem, but with the femtocell introduced, it brought a very complex interference problem in LTE _A system. Concerning the interference problem between femtocell and macrocell in LTE_A system, we proposed an interference coordination scheme which combines dynamic frequency reuse with partial power control to deal with cross-layer interference problem between macrostation and femtocell. Through Matlab simulation, it shows that the scheme can well solve the problem of cross-layer interference and improve the performance of LTE_A system, in particular, in the aspect of frequency utilisation there is great improvement.

关 键 词：室内覆盖 家庭基站 干扰抑制 频率复用 功率控制 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]