e-Infrastructure and e-Services for Developing Countries. 10th EAI International Conference, AFRICOMM 2018, Dakar, Senegal, November 29-30, 2019, Proceedings

Research Article

A 2-hop LoRa Approach Based on Smart and Transparent Relay-Device

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  • @INPROCEEDINGS{10.1007/978-3-030-16042-5_3,
        author={Mamour Diop and Congduc Pham and Ousmane Thiar\^{e}},
        title={A 2-hop LoRa Approach Based on Smart and Transparent Relay-Device},
        proceedings={e-Infrastructure and e-Services for Developing Countries. 10th EAI International Conference, AFRICOMM 2018, Dakar, Senegal, November 29-30, 2019, Proceedings},
        proceedings_a={AFRICOMM},
        year={2019},
        month={3},
        keywords={LoRa Low-power IoT Low-cost IoT Multihop Rural area},
        doi={10.1007/978-3-030-16042-5_3}
    }
    
  • Mamour Diop
    Congduc Pham
    Ousmane Thiaré
    Year: 2019
    A 2-hop LoRa Approach Based on Smart and Transparent Relay-Device
    AFRICOMM
    Springer
    DOI: 10.1007/978-3-030-16042-5_3
Mamour Diop,*, Congduc Pham1,*, Ousmane Thiaré2,*
  • 1: University of Pau
  • 2: Gaston Berger University
*Contact email: mamour.diop@univ-pau.fr, congduc.pham@univ-pau.fr, ousmane.thiare@ugb.edu.sn

Abstract

LoRa is designed for long-range communication where devices are directly connected to the gateway, which removes typically the need of constructing and maintaining a complex multi-hop network. Nonetheless, even with the advantage of penetration of walls, the range may not sometimes be sufficient. This article describes a 2-hop LoRa approach to reduce both packet losses and transmission cost. To that aim, we introduce a smart, transparent and battery-operated relay-device that can be added after a deployment campaign to seamlessly provide an extra hop between the remote devices and the gateway. Field tests were conducted to assess relays’ ability to automatically synchronize to the network without advertising their presence.