Editorial: Third Quarter 2018 IEEE Communications Surveys and Tutorials

I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2018. This issue includes 35 papers covering different aspects of communication networks. In particular, these articles survey and tutor various issues in “Wireless Communications,” “Optical Communications,” “Vehicular and Sensor Communications,” “IoT and M2M,” “5G and SDN,” “Network Virtualization,” “Network Security,” “Network and Service Management and Green Communications,” and “Internet Technologies.” A brief account for each of these papers is given below.