Abstract
Low Power Wide-Area Networks (LPWANs) are gaining a lot of attention in use cases related to the Internet of Things . Most LPWAN communication technologies are asymmetric and have inherently better uplink communication, thus can implement ubiquitous monitoring and data collection efficiently. On the other hand, there is a growing demand for a sizable downlink channel. This work aims at providing a framework to study the feasibility of extensive downlink communication in LoRaWAN with moving End Devices (EDs). Starting from a real-world implementation of a Firmware Update Over the Air application, we experiment with two simple strategies to reduce packet loss when EDs move from within range gateway to another. Then, we extend the ns-3 LoRaWAN module to scale up the study by means of simulation. Such tests show that the chosen strategy and the deployment of the gateways have a strong impact on packet loss and on the time needed to complete the transmission of the data to the EDs. The code of the ns-3 module is available at https://github.com/madsthom/lorawan.
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Notes
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Firmware Over The Air means that an update is supplied wirelessly to the End Devices.
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Acknowledgment
This work was partly funded by the ERC Advanced Grant LASSO; and by the Villum Investigator Project “4OS: Scalable analysis and Synthesis of Safe, Small, Secure and Optimal Strategies for Cyber-Physical Systems”.
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Thomassen, M.S.E., Winkler, K.S., Magrin, D., Albano, M. (2023). A Study of Extensive LoRaWAN Downlink Communication in a Mobility Scenario. In: Longfei, S., Bodhi, P. (eds) Mobile and Ubiquitous Systems: Computing, Networking and Services. MobiQuitous 2022. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 492. Springer, Cham. https://doi.org/10.1007/978-3-031-34776-4_24
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