Sayan Kumar Ray received the Bachelor of Computer Science and Engineering from Gulbarga University, India, Master of Technology in Computer Science and Engineering from the University of Calcutta, India, and Ph.D. in Computer Science from the University of Canterbury, New Zealand. He was a Design Engineer with Tait Communications, New Zealand, where he was involved in researching on the LTE and 3GPP Evolved Packet Core network. He is currently the Leader of Programme Development in Information Technology and a Senior Lecturer with the Faculty of Business and Information Technology at Manukau Institute of Technology, New Zealand. His research interests are in 5G networks, LTE-Advanced/LTE-Unlicensed, spectrum sharing, mobility and handover, disaster management networks, and Internet of Things.