DESIGN AND EXPERIMENTAL EVALUATION OF A TDMA-BASED OVERLAY FOR SCALABLE LOW-POWER IOT MONITORING OVER LORAWAN

This thesis analyzes the issue of access to the medium in LoRaWAN networks for distributed monitoring applications. Specifically, a firmware-level TDMA overlay is designed and experimentally evaluated, while keeping the standard LoRaWAN chain unchanged and comparing it with the reference ALOHA mode. The study is conducted using a testbed consisting of five end-device nodes, a gateway, and a backend for trace collection and analysis. The objective is to verify whether a more regular temporal organization of transmissions can reduce the effects of packet overlap and improve delivery robustness under conditions of increasing load.