I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2019. This issue includes 25 papers covering different aspects of communication networks. In particular, these articles survey and tutor various issues in “Wireless and Cellular Communications,” “5G Communications,” “Vehicular and Sensor Communications,” “IoT and M2M,” “Internet Technologies,” and “Network Security.” A brief account for each of these papers is given below.

中文翻译：

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社论：2019年第四季度IEEE通信调查和指南

我欢迎您阅读2019年《 IEEE通信调查和指南》第四期。该期包括25篇论文，涉及通信网络的各个方面。特别是，这些文章对“无线和蜂窝通信”，“ 5G通信”，“车辆和传感器通信”，“ IoT和M2M”，“ Internet技术”和“网络安全”中的各种问题进行了调查和辅导。这些论文的简要说明如下。