Comparación de Modelos Empíricos de pérdida LPWAN por Propagación en el campus Prosperina de la ESPOL: Resultados derivados de un estudio empírico

Abstract

Long-range technology LoRa, as part of low power consumption technologies LPWAN, allows wireless communications within kilometers of distance using low data rates.  Its characteristics induce the creation of new lines of research to have a better understanding of its behavior in different environments and differentiate it from other similar technologies. In this research, LoRa technology was characterized by the contrast of Sigfox and NBIoT. It was evaluated the path loss effect in LoRa technology, using measurements in open environments and forest environments, at Prosperina Campus - ESPOL.  A path loss gradient model using Least Squares Regression (LS) was found. RSSI parameter was registered, from sending packages through point-to-point node’s topology and getting a mean power from each node. The multi-gradient model obtained was compared with other propagation models such as the Free Space Loss (FSL) model and three empiric models: COST-231 Hata model, model of Dortmund city (Germany), and model from Oulu city (Finland). Among these models, the latter presented the lowest dispersion error regarding the obtained model.