A study of the LoRa signal propagation in forest, urban, and suburban environments

Autor(es)

Ferreira, Ana Elisa ; Ortiz, Fernando M. ; Costa, Luis Henrique M. K. ; Foubert, Brandon ; Amadou, Ibrahim ; Mitton, Nathalie

• Tipo de documento: Artigo Científico
• Fonte: ANNALS OF TELECOMMUNICATIONS; v. 75, n. 7-8, p. 19-pg., 2020-07-23.

Resumo

Sensing is an activity of paramount importance for smart cities. The coverage of large areas based on reduced infrastructure and low energy consumption is desirable. In this context, Low Power Wide Area Network (LPWAN) plays an important role. In this paper, we investigate LoRa, a low-power technology offering large coverage, but low transmission rates. Radio range and data rate are tunable by using different spreading factors and coding rates, which are configuration parameters of the LoRa physical layer. LoRa can cover large areas but variations in the environment affect link quality. This work studies the propagation of LoRa signals in forest, urban, and suburban vehicular environments. Besides being environments with variable propagation conditions, we evaluate scenarios with node mobility. To characterize the communication link, we mainly use the Received Signal Strength Indicator (RSSI), Signal to Noise Ratio (SNR), and Packet Delivery Ratio (PDR). As for node mobility, speeds are chosen according to prospective applications. Our results show that the link reaches up to 250 m in the forest scenario, while in the vehicular scenario it reaches up to 2 km. In contrast, in scenarios with high-density buildings and human activity, the maximum range of the link reaches up to 200 m in the urban scenario. (AU)

• Processo FAPESP: 15/24494-8 - Comunicação e processamento de big data em nuvens e névoas computacionais
• Beneficiário: Nelson Luis Saldanha da Fonseca
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 15/24490-2 - MC2: computação móvel, distribuição de conteúdo e computação em nuvem
• Beneficiário: Luis Henrique Maciel Kosmalski Costa
• Modalidade de apoio: Auxílio à Pesquisa - Regular