1. Sinha, R.S., Wei, Y., Hwang, S.-H.: A survey on LPWA technology: LoRa and NB-IoT. ICT Express 3(1), 14–21 (2017)
2. Ortiz, S.: 4G wireless begins to take shape. Computer 40(11), 18–21 (2007)
3. Liu, J., Wan, J., Jia, D.Y., Zeng, B., Li, D., Hsu, C.-H., Chen, H.: High-efficiency urban-traffic management in context-aware computing and 5G communication. IEEE Commun. Mag. 55(1), 34–40 (2017)
4. Liu, X., Effenberger, F.: Emerging optical access network technologies for 5G wireless. IEEE/OSA J. Opt. Commun. Netw. 8(12), B70–B79 (2016)
5. Velev, D.G.: Internet of things: analysis and challenges. Econ. Altern. 2, 99–109 (2011)