Interference by drones to ground users
Aerial drones connected to cellular networks can affect the throughput of common cell phone users. System-level simulation results were presented at an ACM MobiSys workshop earlier this week.
Author: Christian Bettstetter
Award for excellence in teaching
The University of Klagenfurt has honored exceptional commitment and quality in teaching with its “Lehrepreis.” The award recipients are Nilüfer Aydin, Christian Bettstetter, Andreas Bollin, and Sabrina Gärtner.
Hayat named “rising star” in networking and communications
The annual list Rising Stars in Computer Networking and Communications recognizes ten up-and-coming female researchers to honor their great career start. This year’s list features Samira Hayat, doctoral graduate from the University of Klagenfurt and now researcher at Lakeside Labs and founder. She is the first Austrian-based scientist to receive this award.
Drones in cellular networks
A new project investigates the integration of unmanned aerial vehicles in 5G networks and proposes a hybrid connectivity solution with Wi-Fi. The work is led by Aymen Fakhreddine and advised by Christian Bettstetter. Funding comes from the Austrian Science Fund (FWF). Written by Christian Bettstetter and Aymen Fakhreddine Wireless connectivity is a fundamental component in drone systems with high demands for reliability, security, and performance. Some drone applications need to transmit huge amounts of data or require ultra-low latencies. The wireless technology used in most commercial drones is Wi-Fi, but it only partially meets the high requirements. Therefore, integrating drones into cellular networks is an exciting option, either as a replacement or supplement to Wi-Fi. A new three-year research project at the University of Klagenfurt addresses this issue. Funding was secured from the Austrian Science Fund (FWF) in the amount of about 288,000 € from the ESPRIT postdoctoral program. The work is embedded into many ongoing activities on multi-drone systems in Klagenfurt (uav.aau.at). “The integration of drones into cellular networks has not yet reached the …
Teams of robots that don’t run out of energy
Let’s imagine a large region affected by an earthquake that needs to be combed for missing persons. Because buildings remain at risk of collapsing, this is a task that is particularly well-suited to robots. Micha Sende addressed this kind of scenario in his doctoral thesis. Written by Romy Müller for the University of Klagenfurt. Feature photo by Romy Müller. “What is special about this is that all the robots have the same role, in other words, no-one acts as coordinator,” Micha Sende explains. His research focuses on energy autonomy, asking questions such as: How much energy do I have left? How much energy do I still need to complete a specific task? How long can I continue to work, and when do I need to recharge? Which charging station should I head for, and which one is free at the moment? When asked what makes this task rather complex, Micha Sende answers: “A robotic lawnmower or a robotic vacuum cleaner have a comparatively easy job. They know the territory and they usually work alone, not …
“Research and cultural diversity widened my horizons.”
Pasquale Grippa recently completed his doctorate in technical sciences. He spoke to us about his research focus—improving autonomous transport systems with the help of artificial intelligence.
Wireless connectivity in airplanes
The aviation industry is interested in wireless solutions for in-plane connectivity to improve safety and reduce airplane cost and weight. Ultra-wideband (UWB) seems to be a suitable technology for this purpose due to low power consumption, high data rate, and coexistence with other systems.
Offloading computation to 5G networks: Helping drones to improve their autonomous navigation
Commercial drones usually come equipped with modest on-board computing power. Consequently, their speed and agility are somewhat limited when they use their cameras like eyes to navigate in space. Samira Hayat, a researcher at the Department of Information Technology, recently joined forces with colleagues from other departments and Deutsche Telekom to investigate the effects of offloading computation to the edge of the network (edge computing).
Deadlocks in the synchronization of oscillators
Certain oscillator networks suffer from deadlocks that prevent them from synchronizing. We derived the likelihood for such constellations in star graphs and found that they also occur in random graphs.
