Pathloss Measurements and Modeling for UAVs Connected to Cellular Networks

Rafhael Medeiros de Amorim, Preben Elgaard Mogensen, Troels Bundgaard Sørensen, István Kovács, Jeroen Wigard

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Abstrakt

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.
OriginalsprogEngelsk
Titel2017 IEEE 85th Vehicular Technology Conference (VTC Spring)
Antal sider6
ForlagIEEE
Publikationsdato2017
ISBN (Elektronisk)978-1-5090-5932-4
DOI
StatusUdgivet - 2017
BegivenhedVTC Spring 2017 -
Varighed: 4 jun. 20177 jun. 2017

Konference

KonferenceVTC Spring 2017
Periode04/06/201707/06/2017
NavnI E E E V T S Vehicular Technology Conference. Proceedings
Vol/bind2017
ISSN1550-2252

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