In this scenario the software has to be able to manage all the
connections (low number if possible) and create new packets
(take data from the sensors, analyze the data and compress
several samples in a new packet). To do that, the sensor
nodes have to use events (interrupts), timers and callbacks.
Specifically for our use cases, any sensor is able to dispatch
6 CoAP packets (Non Confirmable Messages) every 250 ms
and check the incoming queue for new messages.