面向2030年及未来，人类社会将进入智能化时代，社会服务均衡化、高端化，社会治理科学化、精准化，社会发展绿色化、节能化将成为未来社会的发展趋势。6G在5G基础上，将从服务于人、人与物，进一步拓展到支撑智能体的高效互联，将实现由万物互联到万物智联的跃迁，成为联接真实物理世界与虚拟数字世界的纽带，将持续提升人们的生活品质，促进社会生产方式的转型升级，并且为人类社会可持续发展的终极目标做出贡献，最终将助力人类社会实现“万物智联、数字孪生”美好愿景。

华为key-technologies-in-open-optical-transmission-systems-cn.pdf

格里菲斯新兴技术 ========

The Internet of Things is the latest rising star in the information and communications technology industry. It embodies the vision of connecting virtually anything with everything and builds on a global growth of the overall number of connected devices. To support, and perhaps further boost, this growth the Third Generation Partnership Project (3GPP) standards development organization has in its Release 13 developed three new technologies known as Extended Coverage GSM Internet of Things (EC-GSM-IoT), LTE for Machine-Type Communications (LTE-M), and Narrowband Internet of Things (NB-IoT) dedicated to providing cellular services to a massive number of IoT devices. This book sets out to introduce, characterize, and, when relevant, in detail describe these three new technologies, defining a new concept known as the Cellular Internet of Things. To start with, Chapter 1 introduces the overall content of the book. Chapter 2 provides an overview of the accomplishments of 3GPP in the field of Machine-Type Communications until Release 13. Chapters 3, 5, and 7 describe the design objectives as well as the technical foundations of EC-GSM-IoT, LTE-M, and NB-IoT. Both physical layer details and idle and connected mode procedures are presented. Chapters 4, 6, and 8 go through the performance objectives of the three technologies and present extensive evaluation results in terms of coverage, throughput, latency, battery lifetime, system capacity, and device complexity. The details behind each of these performance objectives including the methodologies for evaluating them are presented. Chapter 9 summarizes the findings of the earlier chapters and describes the merits of the three technologies and provides a comparison between them. The chapter also introduces a set of solutions for short- and long-range communications operating in unlicensed frequency bands. The advantages of licensed operation over unlicensed operation are highlighted. Finally, Chapter 10 gives a glance of how the

Internet of Things (IoT) Technologies, Applications, Challenges and Solutions 英文无水印原版pdf pdf所有页面使用FoxitReader、PDF-XChangeViewer、SumatraPDF和Firefox测试都可以打开 本资源转载自网络，如有侵权，请联系上传者或csdn删除 查看此书详细信息请在美国亚马逊官网搜索此书

来源：中国信通院

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