464 citations · 657 across the 14 of their papers we have counts for
5 papers · 1 filter
First Experiments with a 5G-Connected Drone
Raheeb Muzaffar, Christian Raffelsberger, Aymen Fakhreddine +3
We perform experiments on the wireless communication between a drone flying at different heights and a commercial 5G base station. An Android-based tool deployed on a 5G test platf…
A Performance Evaluation Tool for Drone Communications in 4G Cellular Networks
Christian Raffelsberger, Raheeb Muzaffar, Christian Bettstetter
We introduce a measurement tool for the performance evaluation of wireless communications with drones over cellular networks. The Android software records various LTE parameters, e…
Cooperative Relaying in LoRa Sensor Networks
Siddhartha Borkotoky, Udo Schilcher, Christian Bettstetter
We propose a communication scheme with relays to improve the reliability of a Long Range (LoRa) sensor network with duty-cycle limitations. The relays overhear the sensors' transmi…
Allocation of Repetition Redundancy in LoRa
Siddhartha Borkotoky, Christian Bettstetter, Udo Schilcher +1
We consider a multipoint-to-point network in which sensors periodically send measurements to a gateway. The system uses Long Range (LoRa) communications in a frequency band with du…
Packet Travel Times in Wireless Relay Chains under Spatially and Temporally Dependent Interference
Alessandro Crismani, Udo Schilcher, Stavros Toumpis +2
We investigate the statistics of the number of time slots that it takes a packet to travel through a chain of wireless relays. Derivations are performed assuming an interferenc…