Measured Uplink Interference Caused by Aerial Vehicles in LTE Cellular Networks
Rafhael Amorim,Huan X. Nguyen,Jeroen Wigard,Istvan Z. Kovacs,Troels B. Sorensen,David Z. Biro,Mads Sorensen,Preben Mogensen +7 more
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TLDR
This letter investigates the impact of uplink transmissions from an aerial user equipment, and assesses two strategies to reduce the uplink interference caused by aerial users: 1) UAV’s cruise height control and 2) directional transmissions.Abstract:
Aerial users, such as unmanned aerial vehicles (UAVs), experience different radio propagation conditions than users on the ground. This is a concern regarding the integration of such users into cellular networks in the near future. This letter investigates the impact of uplink transmissions from an aerial user equipment. Full buffer transmissions were performed by a device at ground level and also flying attached to a UAV at 100 m height. The field measurements show a higher number of cells affected by the aerial transmission, with an increase of up to 7.7 dB in the interference over thermal noise in cells within 15 km of the test location. This letter also assesses two strategies to reduce the uplink interference caused by aerial users: 1) UAV’s cruise height control and 2) directional transmissions. Results show the directional transmission is a more promising technique, and has the advantage of not reducing the uplink received power.read more
Citations
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Accessing From the Sky: A Tutorial on UAV Communications for 5G and Beyond
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Yong Zeng,Qingqing Wu,Rui Zhang +2 more
TL;DR: This article gives a tutorial overview of the recent advances in UAV communications, with an emphasis on how to integrate UAVs into the forthcoming fifth-generation (5G) and future cellular networks.
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Radio Channel Modeling for UAV Communication Over Cellular Networks
Rafhael Amorim,Huan X. Nguyen,Preben Mogensen,Istvan Z. Kovacs,Jeroen Wigard,Troels B. Sorensen +5 more
TL;DR: The results show that path loss exponent decreases as the UAV moves up, approximating freespace propagation for horizontal ranges up to tens of kilometers at UAV heights around 100 m.
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