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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

En Jämförande Studie Av Hur Två Back-Endlösningar I LoRaWAN-Nätverk Skiljer sig i Skalbarhet / A comparative study in scalability of two LoRaWAN-backends

Exner, Linus, Kalla, Robin January 2021 (has links)
Syftet med det här arbetet är att undersöka hur överföringstid skiljer sig i förhållande tillskalbarhet mellan två back-endlösningar i LoRaWAN. Lösningarna är Node-RED ochChirpstack. Studien genomförs med hjälp av metoderna experiment och fallstudie. Iexperimentet utfördes ett t-test för att svara på om nollhypotesen kan förkastas eller inte.Resultatet visar att nollhypotesen inte kunde förkastas, och att det inte är någon skillnadi skalbarhet. Bortsett från t-testet visar resultaten att Chirpstack skalar sämre änNode-RED vid fyra eller fler tillagda enheter. Slutsatsen är däremot att skillnaden ärtillräckligt liten för att bedömas obetydlig för val av back-endlösning. Studien ärbegränsad till sju uppkopplade LoRa-enheter. / The purpose of this study is to investigate how transfer time differs in relation toscalability between two back-end solutions in LoRaWAN. The solutions are Node-REDand Chirpstack. The study is carried out using the methods experiment and case study.In the experiment, a t-test was performed to answer whether the null hypothesis can berejected or not. The results show that the null hypothesis could not be rejected, and thatthere is no difference in scalability. Apart from the t-test, the results show that Chirpstackscales worse than Node-RED at four or more added LoRa-units. The conclusion,however, is that the difference is small enough to be considered insignificant for thechoice of back-end solution. The study is limited to seven connected LoRa units.
2

Virtualizing and simulating LoRaWAN : An experimental approach to virtualizing and simulating a network environment to stress test a LoRaWAN network.

Rodin, Daniel January 2022 (has links)
The goal of this individual assignment work has been to implement a experimental environment to load and stress test a virtualized LoRaWAN network together with a LoRa simulation tool through the use of open source software. By researching theory and open source software connected to IoT, LoRa, LoRaWAN, virtualization, simulation and monitoring a experimental environment was implemented for launching test scenarios to stress and load test the virtualized LoRaWAN network. The experimental environment is built on the researched and chosen software Proxmox, Chirpstack, Lorhammer, Prometheus, Grafana and Wireshark. The resulting implementation rendered measurable results in regards to system load, incoming network traffic and UDP errors handled by the Chirpstack Network server through simulated LoRa network scenarios configured for the Lorhammer simulation tool.

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