Joint Configuration of Transmission Direction and Altitude in UAV-based Two-Way Communication

TL;DR

This paper explores optimizing UAV deployment and transmission direction in two-way communication systems to maximize throughput by leveraging high altitudes and interference characteristics.

Contribution

It introduces a joint configuration approach for UAV altitude and transmission direction in two-way communication to improve system throughput.

Findings

Maximized throughput by adjusting UAV altitude and transmission direction.

Utilized NLoS interference to improve two-way communication efficiency.

Demonstrated benefits of high-altitude UAV deployment for coverage and capacity.

Abstract

When considering unidirectional communication for unmanned aerial vehicles (UAVs) as flying Base Stations (BSs), either uplink or downlink, the system is limited through the co-channel interference that takes place over line-of-sight (LoS) links. This paper considers two-way communication and takes advantage of the fact that the interference among the ground devices takes place through non-line-of-sight (NLoS) links. UAVs can be deployed at the high altitudes to have larger coverage, while the two-way communication allows to configure the transmission direction. Using these two levers, we show how the system throughput can be maximized for a given deployment of the ground devices.