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Title	Robust Gateway Placement For Scalable Lorawan
ID_Doc	46865
Authors	Loh F.; Bau D.; Zink J.; Wolff A.; Hossfeld T.
Year	2021
Published	Proceedings of the 13th IFIP Wireless and Mobile Networking Conference, WMNC 2021
DOI	http://dx.doi.org/10.23919/WMNC53478.2021.9618988
Abstract	Many exciting applications are currently emerging due to the use of technology from the Internet of Things (IoT) in Smart Cities. In recent years, Long Range Wide Area Networks (LoRaWANs) have become one of the main technologies in this field due to long distance coverage, low power consumption sensors, and economic reasons. So far, LoRaWANs have been planned and deployed mainly with the aim of minimizing the number of gateways, while still providing coverage in a geographic area. Packet collisions and future traffic have not been considered. In contrast, we present a gateway placement strategy that is robust against an increase in the number of sensors and in the network load. To this end, we modify an existing local search algorithm for a geometric set cover problem such that it takes the capacities of gateways into account. If we set these capacities below the maximum, the network can accommodate additional sensors in the future. Moreover, our algorithm can extend the initial placement once the capacities are exhausted. © 2021 Proceedings of the 13th IFIP Wireless and Mobile Networking Conference, WMNC 2021. All rights reserved.
Author Keywords	Logic gates; Power demand; Search problems; Smart cities; Wide area networks; Wireless communication; Wireless sensor networks

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