5G移动通信网络关键技术综述

为适应未来海量移动数据的爆炸式增长,加快新业务新应用的开发,第五代移动通信(fifth generation mobile communication network,5G)网络应运而生.目前,国内外已经逐渐明确了5G的愿景和需求,如何将现有技术和多种潜在的新技术进行融合以实现5G网络成为下一步的研究与发展重点.面向未来5G的技术发展,介绍5G的概念、应用场景以及终端用户对5G的相关需求;然后,重点阐述5G在无线网络方面具有发展前景的10大关键技术,包括:超密集异构网络、自组织网络、D2D (device-to-device)通信、M2M (machine-to-machine)通信、软件定义无线网络、信息中心网络、内容分发网络、移动云计算、软件定义网络/网络功能虚拟化、情景感知技术.给出了每种技术的基本概念或原理,以及应用到5G网络时潜在的研究问题.最后概述了5G的发展趋势及存在的难点.

Prospective network techniques for 5G mobile communication: A survey

In order to solve the explosive growth of mobile data traffic, massive terminals, new emerging businesses and varieties of novel services scenarios, the fifth generation mobile communication network (5G) is proposed and becoming a hot topic in academical and industrial field. Now, many countries or communities have completed the first step of 5G development which clarified the users''requirements and future vision of 5G. Therefore, when facing the 5G requirements into 2020, combine the existing and potential new technologies to implement the 5G network ii now put on table. In this paper , we first introduce the concept of 5G, and some use cases and user-driven requirements. Then, we mainly focus on ten prospective key techniques of wireless networking , and they involve ultra-dense networking (UDN) , self-organizing networking (SON) , software-defined wireless networking (SDWN) , content distribution network (CDN) , information-centric networking (ICN) , device-to-device (D2D) communication, machine-to-machine (M2M) communication, mobile cloud computing ,software-defined networking/network function virtualization, and context-aware networking (CND) . We present the fundamental concept or thought for each technique, and show the research topics when it is to be applied to 5G. Finally, we briefly discuss the future problems towards 5G.