This is not a single project, but rather a larger cluster of potential projects in the field of what could be summarized as extreme networking. The networks we are interested in are typically wireless, and can be extreme in different senses of the word: distance - hundreds of kilometers terrestrial, 10,000s of km to satellite latency - sub-ms latencies autonomy - off-grid quality - extreme remote …
Supervisors: Sebastian Büttrich
Semester: Fall 2024
Tags: network, IoT, LoRa, LoRaWAN, satellites

LoRa is a long range, low bandwith networking protocol widely used in Internet of Things projects, sensor networks, low power, low cost and embedded systems. LoRa’s encoding schema allows for extremely long distance communications with small power usage and small simple antennas. This combination of features has made it attractive to small satellite operators flying cubesats and LoRa is now …
Supervisors: Sebastian Büttrich
Semester: Fall 2024
Tags: IoT, LoRa, LoRaWAN, satellites

In LoRaWAN networks such as The Things Network, long distance transmissions, well beyond the limitations of line of sight in terrestrial geometry, are frequently observed. Tropospheric effects are seen as responsible for bending or guiding radio waves around the earth curvature. As an example, under the right weather conditions, the LoRaWAN gateway at ITU may collect packets from northern Germany, …
Supervisors: Sebastian Büttrich
Semester: Fall 2022
Tags: IoT, LoRaWAN, LPWAN, satellite, networks, troposphere, weather

Recent progress in LoRaWAN development has made a new generation of satellite communications offerings available to IoT devices. In these, the LoRaWAN gateway is satellite born, and collecting data from small inexpensive ground stations. So far, this is predominantly seen as a means of communciation for remote sensor data, e.g. in agriculture, logistics or wildlife monitoring. However, one can …
Supervisors: Sebastian Büttrich
Semester: Fall 2021
Tags: IoT, LoRaWAN, LPWAN, satellite, networks, edge, security