LTE-A中异构蜂窝网络下的切换技术研究

随着小型蜂窝基站的大量部署,异构网络环境越来越复杂,为了保证用户在小型蜂窝基站和宏基站的无缝移动,用户对移动性管理也提出了更高的要求。因此,异构蜂窝网络的移动性管理成为未来通信的一个重要技术。本文针对小型蜂窝基站的大量部署和用户的频繁移动带来的切换问题进行分析,总结了LTE-A切换的基本知识,并进一步归纳了LTE-A中异构蜂窝网络下切换技术的关键研究点。

The Research of Handover in Heterogeneous LTE-ACellular Networks

As the wide deployment of small cellular base stations（BSs）, heterogeneous cellular networks（HCNs） become increasingly complex. In order to ensure the seamless move between small cellular BSs and macro BSs, users put forward higher requirement for mobility management. Therefore, mobility management in HCNs becomes an important technology for future communication. In this paper, the handover problem caused by the wide deployment of small cellular BSs is illustrated. In addition, users＇ frequent move is mentioned. At last, the basic knowledge of handover and the key research aspects of handover in HCNs are further summarized in Long Term Evolution-Advanced（LTE-A）.