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.
All posts filed under: Publications
“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.
Using cellular networks for drones
It might soon become common for drones to transport goods and people, monitor disaster zones, and bring various forms of relief to areas that are difficult to access. Which communication infrastructure is best suited to facilitate this? Researchers at the University of Klagenfurt have explored potential challenges associated with the use of traditional cellular networks.
Guarded access balances out waiting times in transport systems
A transport system with passengers traveling between stations in periodically arriving cabins is considered. We propose and evaluate an access control algorithm that dynamically limits the number of passengers who are allowed to board the current cabin. Simulation of a ski lift using empirical passenger data suggests that such access control can balance out the average waiting times at different stations. The algorithm works well with estimated values of the arrival and de-boarding rates.
UWB connectivity in industrial environments
The connectivity of ultra-wideband (UWB) devices is studied in an aircraft assembly hangar and a production hall. These measurements are the first ones reported for off-the-shelf UWB devices in industrial settings and shed light on this technology’s potential to support emerging industrial applications.
One time for all: Synchronizing time in drone swarms
Wherever several clocks tick simultaneously, it is tricky to get them all to display precisely the same time. This can be a challenge for drone swarms that are airborne together. To tackle this problem, young scientist Agata Barciś is developing new technologies.
Intelligent boarding to ski lifts
A boarding solution for a cable car system that limits the number of passengers allowed to enter a transport cabin has been proposed. Our analysis shows that a shorter waiting time at a particular station worsens the stability of other stations.