LTE-A异构网中空白子帧的动态配置  

Dynamic configuration of almost blank subframe in LTE-advance heterogeneous networks

作　　者：文武[1,2] 徐旭东[1] 

机构地区：[1]重庆邮电大学通信新技术应用研究中心,重庆400065 [2]重庆信科设计有限公司,重庆400065

出　　处：《电子技术应用》2014年第12期118-120,128,共4页Application of Electronic Technique

基　　金：重庆市自然科学基金(cstc2012jj A40054)

摘　　要：为了解决LTE-A异构网中负载均衡和干扰问题,3GPP提出了增强型干扰协调技术。这项技术提出用空白子帧减少微基站边缘用户的干扰。从公平性角度讨论了动态的空白子帧设定,并提出了两种空白子帧配置算法。仿真表明,提出的两种动态空白子帧设定方法有效提升了系统的公平性。此外,仿真还对比了这两种动态的配置方法,表明最大化公平性的配置方法能够有效缓解微基站边缘用户随着覆盖区域增大吞吐量不断减小的趋势。Enhanced interference coordination techniques （eICIC） can improve the performance of load balancing and co-chan nel interference of LTE-A heterogeneous network.eICIC proposed almost blank subframe to reduce the Pico-edge user interference.This paper discussed dynamic ABSF setting from fairness perspective.And two ABSF allocation algorithms were proposed.Compared to the static ABSF configuration,the proposed ABSF setting methods enhance the fairness and edge user throughput effectively.The simulation also compared the two ABSF configuration.The results show that Max Fairness ABSF can effectively alleviate the decreasing trend of Pico-edge user＇s throughput along with the increase of extended area.

关 键 词：LTE-A异构网络 增强型干扰协调技术 区域扩展技术 近似空白子帧 

分 类 号：TN915[电子电信—通信与信息系统]