Adaptive mitigation of the Air-Time pressure in LoRa multi-gateway architectures
Conference: European Wireless 2018 - 24th European Wireless Conference
05/02/2018 - 05/04/2018 at Catania, Italy
Proceedings: European Wireless 2018
Pages: 6Language: englishTyp: PDF
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Authors:
Cuomo, Francesca (University of Rome ”La Sapienza”, Italy & CNIT, Italy)
Campo, Manuel; Bianchi, Giuseppe (University of Rome ”Tor Vergata”, Italy & CNIT, Italy)
Bassetti, Enrico; Cartella, Lorenzo; Sole, Federica (University of Rome ”La Sapienza”, Italy)
Abstract:
LoRa is a promising technology in the current Internet of Things market, which operates in un-licensed bands achieving long-range communications and with ultra power devices. In this work we capitalize on the idea introduced in [1], i.e. balance the Air-Time of the different modulation spreading factors (SF), and adapt it to operate in a typical metropolitan scenario comprising multiple gateways (GWs) interconnected to a same network server. Our proposed approach, named ADaptive Mitigation of the AIr-time pressure in lORa (AD MAIORA), relies on a suitable measure of the per-spreading-factor load at each GW - quantified by means of a so-called pressure table -, and on a relevant heuristic algorithm which attempts to balance such a per-SF-pressure. Especially in cases of very loaded scenarios, where a high number of nodes insist on the same GWs, the use of AD MAIORA shows significant performance gains, up to a factor of 5 improvements with respect to the legacy LoRaWAN’s Adaptive Data Rate.