The fifth-generation (5G) of mobile communications networks is emerging as a revolutionary technology that will accelerate the development of smart cities and the realization of the information society. This paper aims to provide an introduction to 5G for non-specialists, and a survey of this new technology for those already familiar with mobile communications, covering the conceptualization and the core technologies underpinning 5G networks. The paper also discusses the status of the commercial roll-out of 5G until 2020 from a worldwide perspective and gives a future view of mobile communications beyond 5G.

中文翻译：

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5G 及未来：移动通信的过去、现在和未来


第五代移动通信网络（5G）作为一项革命性技术正在兴起，将加速智慧城市的发展和信息社会的实现。本文旨在为非专业人士提供 5G 介绍，并为已经熟悉移动通信的人员提供对这项新技术的调查，涵盖支撑 5G 网络的概念和核心技术。白皮书还从全球角度讨论了 2020 年 5G 商用的现状，并对 5G 之外的移动通信的未来进行了展望。