An Energy-efficient Aerial Backhaul System with Reconfigurable Intelligent Surface

by   Hong-Bae Jeon, et al.

In this paper, we propose a novel wireless architecture, mounted on a high-altitude aerial platform, which is enabled by reconfigurable intelligent surface (RIS). By installing RIS on the aerial platform, rich line-of-sight and full-area coverage can be achieved, thereby, overcoming the limitations of the conventional terrestrial RIS. We consider a scenario where a sudden increase in traffic in an urban area triggers authorities to rapidly deploy unmanned-aerial vehicle base stations (UAV- BSs) to serve the ground users. In this scenario, since the direct backhaul link from the ground source can be blocked due to several obstacles from the urban area, we propose reflecting the backhaul signal using aerial-RIS so that it successfully reaches the UAV-BSs. We jointly optimize the placement and array-partition strategies of aerial-RIS and the phases of RIS elements, which leads to an increase in energy-efficiency of every UAV-BS. We show that the complexity of our algorithm can be bounded by the quadratic order, thus implying high computational efficiency. We verify the performance of the proposed algorithm via extensive numerical evaluations and show that our method achieves an outstanding performance in terms of energy-efficiency compared to benchmark schemes.



There are no comments yet.


page 1

page 2

page 6

page 9

page 10

page 14


A Predictive On-Demand Placement of UAV Base Stations Using Echo State Network

The unmanned aerial vehicles base stations (UAV-BSs) have great potentia...

Data-Driven 3D Placement of UAV Base Stations for Arbitrarily Distributed Crowds

In this paper, we consider an Unmanned Aerial Vehicle (UAV)-assisted cel...

Coverage and Rate Analysis for Unmanned Aerial Vehicle Base Stations with LoS/NLoS Propagation

The use of unmanned aerial vehicle base stations (UAV-BSs) as airborne b...

Energy and Service-priority aware Trajectory Design for UAV-BSs using Double Q-Learning

Next-generation mobile networks have proposed the integration of Unmanne...

A User-Centric Cooperative Scheme for UAV Assisted Wireless Networks in Malfunction Areas

A promising application of unmanned aerial vehicles (UAVs) to the future...

Aerial Reconfigurable Intelligent Surface-Aided Wireless Communication Systems

In this paper, we propose and investigate an aerial reconfigurable intel...

Time-Weighted Coverage of Integrated Aerial and Ground Networks for Post-Disaster Communications

In this paper, we propose a new three dimensional (3D) networking archit...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.