认知无线电技术研究新进展专题讲座(四) 第7讲 LTE-U:LTE与Wi-Fi的共存技术研究分析  

LTE-U:Research Analysis of Coexistence Technology between LTE and Wi-Fi

作　　者：方盈峰 王呈贵[2] 杜昊阳 丁国如[2] 

机构地区：[1]解放军理工大学通信工程学院研究生5队,江苏南京210007 [2]解放军理工大学通信工程学院

出　　处：《军事通信技术》2015年第3期93-98,共6页Journal of Military Communications Technology

摘　　要：日益增长的通信量需求导致频谱资源短缺的问题越来越严重,为了解决这一问题,LTE在非授权频带的使用即LTE-U(LTE in Unlicensed spectrum)被提出。但是目前LTE无法在非授权频带上与广泛使用的802.11(Wi-Fi)进行共存,所以亟需解决LTE-U与Wi-Fi的共存问题。文章分析了LTE与Wi-Fi在非授权频带的共存挑战,然后介绍共存机制的研究现状,最后展望LTE-U的未来发展趋势和挑战。Nowadays the problem of spectrum scarcity is more severe due to the growing traf- fic demand. In order to solve it, LTE in Unlicensed spectrum（LTE-U） has been proposed. How- ever, current LTE-U cannot in the same band friendly and fairly coexist with 802. 11 （Wi-Fi）, which is widely used in unlicensed spectrum. So this is the critical challenge which LTE-U will face in the future. This paper addressed the coexistence challenge between LTE-U and Wi-Fi, in- troduced the coexistence mechanisms and discussed the future research trends.

关 键 词：非授权频带的长期演进 无线保真 第五代通信 异构网络共存 

分 类 号：TN929.5[电子电信—通信与信息系统]