In this first chapter, 1
we'll look at the properties and the characteristics of an embedded system. 2
We will deal only with the world 3
of the Internet of Things and therefore with small low power systems. 4
Before studying in details to LoRaWAN protocol, we'll compare it with existing 5
protocol to understand what the differences are. 6
We will then see how the LoRa modulation can solve the problem of range 7
and consumption, but also how can thousands of devices can 8
transmit messages on the same frequency band.