LTE-Advanced移动通信系统双连接技术  

Dual Connectivityfor 3GPP LTE-Advanced Mobile Communication System

作　　者：李先栋 于翠波[1] 勾学荣[1] 

机构地区：[1]北京邮电大学教育技术研究所,北京100876

出　　处：《现代电信科技》2014年第9期17-23,共7页Modern Science & Technology of Telecommunications

基　　金：国家科技重大专项FDD LTE-Advanced终端基带芯片工程样片研发(2012ZX03001039-002)

摘　　要：提供了双连接技术的应用场景,从架构及移动性增强角度对双连接技术进行了分析:架构设计上双连接技术实现了用户平面和控制平面的分离;在用户平面可以通过聚合不同基站的无线资源来提升用户吞吐性能,在控制平面可以通过避免不必要的切换以及将与切换相关的信令通过多个节点传送给终端来增强移动鲁棒性。Deployment scenarios were provided and Dual Connectivity was analyzed from the view of architecture and mobility enhancement： Dual Connectivity achieves the separation of C-Plane and U-Plane; Per-user throughput could be improved by aggregating radio resources from different nodes; besides, mobility robustness could be enhanced by avoiding unnecessary handover and RRC diversity operation.

关 键 词：双连接 载波聚合 非理想回程 架构 移动 性增强 

分 类 号：TN929.5[电子电信—通信与信息系统]