The articles in this special section focus on mobile communications and networks. While the core architecture and radio aspects for 5G are starting to achieve a degree of consensus in 3GPP Rel-15 and Rel-16, a huge number of ancillary proposals and functional areas are still being worked on. The anticipated pervasive nature of 5G into every nook and cranny of mobile communications drives many functions that were not required in previous generations. Further, 5G seeks to bring a large number of previously disparate areas of wireless communications under one umbrella, i.e., vehicular communications, railway signaling, mission-critical services, and Internet of Things, to name but a few, resulting in a multi-layered, heterogeneous architecture with many challenges. We explore some of these dimensions in this special section.

中文翻译：

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移动通信和网络

本节中的文章重点介绍移动通信和网络。尽管5GPP的核心架构和无线电方面已开始在3GPP Rel-15和Rel-16中达成共识，但仍在研究大量辅助建议和功能领域。5G渗透到移动通信的每个角落的预期的普遍性质推动了许多功能，而前几代人并不需要这些功能。此外，5G试图将一大批先前不同的无线通信领域归为一类，例如，车载通信，铁路信号，关键任务服务和物联网等，仅此而已，从而形成了多层，异构架构面临许多挑战。我们将在此特殊部分中探讨其中一些维度。