A Test Bench for Evaluating Communication Delays in LoRaWAnapplications

The Internet of Things (IoT) promises to deeply change the way we live and work thanks to the availability of ubiquitous smart objects. When flexibility and mobility are a must, wireless connections have to be implemented, introducing additional requirements: large coverage, low complexity and low power consumption. Low Power Wide Area Networks (LPWAN) have been proposed as a possible solution, thus several standards appeared in the recent past. Among others, LoRaWAnis emerging as a reference technology, thanks to its open nature and the many allowed modules. The available relevant literature includes several works about theoretical models of obtainable performance; however, no one discusses infrastructure-related delays. In this work, a methodology for the experimental evaluation of LoRaWAninfrastructure performance in realworld scenarios is proposed. When a reference implementation is adopted, results show that the Network Server task is one of the most demanding process (on the order of 0.5s for the considered setup).