Long-range communications in unlicensed bands: the rising stars in the IoT and smart city scenarios
Long-range communications in unlicensed bands: the rising stars in the IoT and smart city scenarios
Connectivity is probably the most basic building block of the IoT paradigm. Up to now, the two main approaches to provide data access to things have been based on either multihop mesh networks using short-range communication technologies in the unlicensed spectrum, or long-range legacy cellular technologies, mainly 2G/GSM/GPRS, operating in …