基于异构网双连接技术切换流程的分析与实现  

Analysis and Implementation of Handover Process of Dual Connectivity Technology based on Heterogeneous Networks

作　　者：李小文[1] 王晓娟[1] 田凤仙[1] 李新梅[1] LI Xiao-wen WANG Xiao-juan TIAN Feng-xian LI Xin-mei(College of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, Chin)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《光通信研究》2017年第2期68-70,共3页Study on Optical Communications

基　　金：国家科技专项基金资助项目(2012ZX03001024)

摘　　要：移动数据的爆炸性增长带来了基站负载过大等问题,再加上频谱资源的稀缺,传统的蜂窝网络已经不能满足需求,为了获得吞吐量和用户密度的提升,异构蜂窝组网成为LTE-A(改进的长期演进)的必然选择。文章在假设SeNB(小基站)同时在S-MeNB(源宏基站)和T-MeNB(目标宏基站)的覆盖范围内的基础上,基于异构网中的双连接技术,对S-MeNB切换到TMeNB的流程进行了设计。为了验证此双连接切换流程设计的成功与否,文章提出了一种结合TTCN-3的实现方案,通过仿真图验证了流程设计的合理性和可行性。The explosive growth of mobile data brings the problems such as base station overload, the scarcity of spectrum re- sources and so on. The traditional cellular network can not satisfy the requirement. In order to obtain the throughput and user density enhancement, heterogeneous cellular network become the inevitable choice. In this paper, we assume that SeNB is based on the coverage of S-MeNB and T-MeNB simultaneously, and based on the dual-connection technology in heterogeneous network. Then we design the process of S-MeNB switching to T-MeNB. In order to verify the success of the design of the dual connection handover process, we present a scheme of combining TTCN-3, which verifies the rationality and feasibility of the process design.

关 键 词：双连接 小基站 源宏基站 目标宏基站 切换 

分 类 号：TN929.5[电子电信—通信与信息系统]