Abstract
NB-IoT technology supports three scenarios for the use of the radio frequency spectrum: autonomous, in the guard band, shared spectrum use in mobile networks. The choice of NB-IoT deployment scenario is important. It affects not only the flexibility of network deployment, the cost of its modernization, but also the main indicators of the efficiency of the 4G mobile communication networks, and, consequently, the satisfaction of users with the Internet of Things services provided. The results of simulation modeling of the effectiveness of the use of three scenarios of using the radio frequency spectrum in 4G mobile networks in the provision of Internet of things services based on the application of a multi-criteria approach are presented in this article. The NB-IoT technology testing methodology, as well as the main conclusions and recommendations for choosing the most profitable NB-IoT deployment scenario are presented for consideration. Key words: NB-IoT, Internet of Things, in-band, standalone, guard band.