I Welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2020. This issue includes 22 papers covering different aspects of communication networks. In particular, these articles survey and tutor various issues in “Wireless Communications,” “5G and Vehicular Communications,” “Internet of Things,” “Network Security,” and “Miscellaneous.” There are three papers in the miscellaneous category which survey the issues in Molecular Communications, Multimedia Networks, and Optical Networks. A brief account for each of these papers is given below.

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社论：2020 年第四季度 IEEE 通信调查和教程


欢迎您阅读 2020 年第四期 IEEE 通信调查和教程。本期包括 22 篇论文，涵盖通信网络的不同方面。特别是，这些文章调查并指导了“无线通信”、“5G 和车辆通信”、“物联网”、“网络安全”和“杂项”中的各种问题。杂项类别中有三篇论文调查了分子通信、多媒体网络和光网络中的问题。下面对每篇论文进行简要说明。