Analysis of the delay of confirmed downlink frames in Class B of LoRaWAN

François Delobel (1, 2) , Nancy El Rachkidy (1, 2) , Alexandre Guitton (1, 2)

1 LIMOS - Laboratoire d'Informatique, de Modélisation et d'optimisation des Systèmes
2 UCA [2017-2020] - Université Clermont Auvergne [2017-2020]

Wireless sensor networks have long been characterized by short range communications. Lately, long range wireless sensor networks such as LoRaWAN (long range wide area network) have emerged, increasing the communication range at the cost of reduced bit rate. This paper focuses on the MAC layer of LoRaWAN and studies communications from a gateway to an end-device. We propose a Markov chain model to estimate the delivery delay of an acknowledged communication (with retransmissions) and study the impact of the number of channels, the data-rate and the number of nodes.

Domaines: Réseaux et télécommunications [cs.NI]

François Delobel, Nancy El Rachkidy, Alexandre Guitton. Analysis of the delay of confirmed downlink frames in Class B of LoRaWAN. 85th Vehicular Technology Conference (VTC), IEEE, Jun 2017, Sydney, Australia. ⟨10.1109/VTCSpring.2017.8108412⟩. ⟨hal-01471673⟩