Abstract
There are currently many communication options in the Internet of Things, even in particular areas such as constrained and battery-powered devices, such as Low Power Wide Area Networks. Understanding the differences and characteristics of each option is a challenge, even for professionals and researchers in the field. To meet this need, this work analyses the qualitative characteristics of Low Power Wide Area Network protocols and the challenges and opportunities of using constrained devices for sparse networks based on long-life batteries através de uma Umbrella Review. For this study, a bibliographic survey of the literature was carried out as an analysis of three protocols (LoRaWAN, NB-IoT, and Sigfox), and a detailing of the first one and presenting several characteristics relevant to decision-making regarding the security of this protocol. As a result, there is a discussion about the chosen network protocol and its use in IoT solutions with sparse sensors.