5G for future wireless networks : Second EAI International Conference, 5GWN 2019, Changsha, China, February 23-24, 2019, Proceedings - Leung, Victor C.M. 1955-; Zhang, Haijun; Hu, Xiping; Liu, Qiang; Liu, Zhi (Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering ;, 2019)