Höchst, Jonas ; Baumgärtner, Lars ; Kuntke, Franz ; Penning, Alvar ; Sterz, Artur ; Freisleben, Bernd (2020)
LoRa-based Device-to-Device Smartphone Communication for Crisis Scenarios.
17th International Conference on Information Systems for Crisis Response and Management (ISCRAM 2020). Blacksburg, Virginia, USA (24.5.-27.5.2020)
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Kurzbeschreibung (Abstract)

In this paper, we present an approach to facilitate long-range device-to-device communication via smartphones in crisis scenarios. Through a custom firmware for low-cost LoRa capable micro-controller boards, called rf95modem, common devices for end users can be enabled to use LoRa through a Bluetooth, Wi-Fi, or serial connection. We present two applications utilizing the flexibility provided by the proposed firmware. First, we introduce a novel device-to-device LoRa chat application that works a) on the two major mobile platforms Android and iOS and b) on traditional computers like notebooks using a console-based interface. Second, we demonstrate how other infrastructure-less technology can benefit from our approach by integrating it into the DTN7 delay-tolerant networking software. The firmware, the device-to-device chat application, the integration into DTN7, as well as the experimental evaluation code fragments are available under permissive open-source licenses.

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