UAV-assisted C-RAN for On-demand Cellular Coverage: Opportunities and Challenges

TL;DR

This paper explores the integration of UAVs with C-RAN to enhance cellular coverage in disaster, hotspot, and complex terrain scenarios, highlighting opportunities, challenges, and preliminary simulation results.

Contribution

It introduces the concept of UAV-assisted C-RAN architecture for beyond 5G, focusing on its application scenarios and providing initial performance analysis.

Findings

UAV-assisted C-RAN can improve coverage in challenging environments

Preliminary simulations show promising performance gains in hotspot scenarios

Identifies key opportunities and challenges for deployment

Abstract

The deployment of beyond fifth-generation (5G) infrastructure over disaster-affected regions, temporary hotspot situations (e.g., massive gatherings, etc.), complex terrains (e.g., sea, hills, marshes, etc.) poses numerous challenges for cellular service providers. Recently, unmanned aerial vehicles (UAVs) have emerged as potential candidates to overcome the aforementioned technical issues based on their multi-role capabilities to serve as aerial base stations, mobile relays, and flying wireless access points. As such, the UAVs can act as portable platforms that can be deployed immediately on demand without requiring massive ground infrastructure to support wireless services. This article introduces the integration of UAVs to cloud radio access networks (C-RAN) for beyond 5G applications. The article mainly focuses on the underlying opportunities and challenges to realize the UAV-assisted C-RAN (UC-RAN) architecture in view of three generic application scenarios, i.e., disaster management, hotspots, and complex terrains. A preliminary performance analysis via simulation is further provided for the proposed UC-RAN under hotspot application scenario based on the relevant metrics.