Abstract
NB-Fi is a new low-power wide-area network technology, which has become widely used for Smart Cities, Smart Grids, the Industrial Internet of Things, and telemetry applications. Although many countries use NB-Fi, almost no papers study NB-Fi, and its peak performance is unknown. This paper aims to fill this gap by analyzing this technology and studying the problem of rate assignment in NB-Fi networks. For that, the paper develops a mathematical model used to find the packet loss ratio, packet error rate, and the average delay for various rate assignment approaches. The performance evaluation results are used to develop the guidelines for NB-Fi configuration to optimize the network performance.
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