TY - GEN
T1 - Pathloss Measurements and Modeling for UAVs Connected to Cellular Networks
AU - Amorim, Rafhael Medeiros de
AU - Mogensen, Preben Elgaard
AU - Sørensen, Troels Bundgaard
AU - Kovács, István
AU - Wigard, Jeroen
PY - 2017
Y1 - 2017
N2 - This paper assess field measurements, as part of the investigation of the suitability of cellular networks for providing connectivity to UAVs (unmanned aerial vehicles). Evaluation is done by means of field measurements obtained in a rural environment in Denmark with an airbone UAV. The measurements were conducted in an operating LTE network (850 MHz), using a commercial cell phone, placed inside the frame of the UAV. Trials were conducted for UAV flying at 5 different heights measured above ground level (20, 40, 60, 80 and 100m) and a pathloss regression line was obtained from results. Then, downlink (DL) SINR levels obtained during flight measurements are also presented. An important result obtained from the measurents reveal that there is a height-related DL SINR degradation. Three main sources of uncertainty on the pathloss model that could be responsible for the SINR degradation are also presented and discussed in this paper: expanded radio horizon at higher levels, line-of-sight (LOS) clearing and decreased obstruction of the first Fresnel zone. The importance of a better quantification of this uncertainty factors are stressed out as future work plans are described.
AB - This paper assess field measurements, as part of the investigation of the suitability of cellular networks for providing connectivity to UAVs (unmanned aerial vehicles). Evaluation is done by means of field measurements obtained in a rural environment in Denmark with an airbone UAV. The measurements were conducted in an operating LTE network (850 MHz), using a commercial cell phone, placed inside the frame of the UAV. Trials were conducted for UAV flying at 5 different heights measured above ground level (20, 40, 60, 80 and 100m) and a pathloss regression line was obtained from results. Then, downlink (DL) SINR levels obtained during flight measurements are also presented. An important result obtained from the measurents reveal that there is a height-related DL SINR degradation. Three main sources of uncertainty on the pathloss model that could be responsible for the SINR degradation are also presented and discussed in this paper: expanded radio horizon at higher levels, line-of-sight (LOS) clearing and decreased obstruction of the first Fresnel zone. The importance of a better quantification of this uncertainty factors are stressed out as future work plans are described.
UR - http://www.scopus.com/inward/record.url?scp=85040582314&partnerID=8YFLogxK
U2 - 10.1109/VTCSpring.2017.8108204
DO - 10.1109/VTCSpring.2017.8108204
M3 - Article in proceeding
T3 - I E E E V T S Vehicular Technology Conference. Proceedings
BT - 2017 IEEE 85th Vehicular Technology Conference (VTC Spring)
PB - IEEE
T2 - VTC Spring 2017
Y2 - 4 June 2017 through 7 June 2017
ER -