LoRaWAN is a major player for IoT data collection in large areas. In such networks, the uplink is mainly used, especially for data transmission, whereas the downlink is used for control purposes, including physical layer configuration, over the air activation and acknowledgments. In most studies of the LoRaWAN capacity, the uplink and the downlink are supposed to be orthogonal. This assumption seems acceptable and correct because the LoRa physical layer uses an inverse modulation for the uplink and the downlink. In this work, we use a real testbed composed of software-defined radio (USRPs, GNU Radio) to show that this assumption is wrong: the frame delivery rate decreases by up to 20% when simultaneous transmissions occur between the uplink and the downlink. As far as we know, it is the first time that this result is shown.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Uplink and downlink are not orthogonal in LoRaWAN!


    Beteiligte:
    Saroui, Rachida (Autor:in) / Guitton, Alexandre (Autor:in) / Iova, Oana (Autor:in) / Valois, Fabrice (Autor:in)


    Erscheinungsdatum :

    2022-09-01


    Format / Umfang :

    3314258 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Downlink Independent Throughput optimisation in LoRaWAN

    Citoni, Bruno / Ansari, Shuja / Abbasi, Qammer Hussain et al. | IEEE | 2022


    Analysis of the Delay of Confirmed Downlink Frames in Class B of LoRaWAN

    Delobel, Francois / El Rachkidy, Nancy / Guitton, Alexandre | IEEE | 2017


    Method for distinguishing uplink and downlink communications

    TODESCHINI ERIC | Europäisches Patentamt | 2019

    Freier Zugriff

    METHOD FOR DISTINGUISHING UPLINK AND DOWNLINK COMMUNICATIONS

    TODESCHINI ERIC | Europäisches Patentamt | 2019

    Freier Zugriff

    Simplifying Operations With an Uplink/Downlink Integration Toolkit

    Murphy, S. / Miller, K. / Guerrero, A. M. et al. | British Library Conference Proceedings | 1994