Placement Optimization for UAV-Enabled Wireless Networks with Multi-Hop Backhaul
arXiv:1809.04963 · doi:10.1007/s41650-018-0040-3
Abstract
Unmanned aerial vehicles (UAVs) have emerged as a promising solution to provide wireless data access for ground users in various applications (e.g., in emergence situations). This paper considers a UAV-enabled wireless network, in which multiple UAVs are deployed as aerial base stations (BSs) to serve users distributed on the ground. Different from prior works that ignore UAV's backhaul connections, we practically consider that these UAVs are connected to the core network through a ground gateway node via rate-limited multi-hop wireless backhauls. We also consider that the air-to-ground (A2G) access links from UAVs to users and the air-to-air (A2A) backhaul links among UAVs are operated over orthogonal frequency bands. Under this setup, we aim to maximize the common (or minimum) throughput among all the ground users in the downlink of this network subject to the flow conservation constraints at the UAVs, by optimizing the UAVs' deployment locations, jointly with the bandwidth and power allocation of both the access and backhaul links. However, the common throughput maximization is a non-convex optimization problem that is difficult to be solved optimally. To tackle this issue, we use the techniques of alternating optimization and successive convex programming (SCP) to obtain a locally optimal solution. Numerical results show that the proposed design significantly improves the common throughput among all ground users as compared to other benchmark schemes.
arXiv comment8 pages, 5 figures
References in corpus (7)
- Wireless Communications with Unmanned Aerial Vehicles: Opportunities and Challenges
- Unmanned Aerial Vehicle with Underlaid Device-to-Device Communications: Performance and Tradeoffs
- Placement Optimization of UAV-Mounted Mobile Base Stations
- Cyclical Multiple Access in UAV-Aided Communications: A Throughput-Delay Tradeoff
- Throughput Maximization for UAV-Enabled Wireless Powered Communication Networks
- UAV-Enabled Wireless Power Transfer: Trajectory Design and Energy Region Characterization
- Network Formation in the Sky: Unmanned Aerial Vehicles for Multi-hop Wireless Backhauling
Cited by in corpus (12)
- Cognitive UAV Communication via Joint Maneuver and Power Control
- Fundamental Rate Limits of UAV-Enabled Multiple Access Channel with Trajectory Optimization
- Advances in UAV Avionics Systems Architecture, Classification and Integration: A Comprehensive Review and Future Perspectives
- Interference Avoidance Position Planning in Dual-hop and Multi-hop UAV Relay Networks
- Drone-Assisted Communications for Remote Areas and Disaster Relief
- UAV-Enabled Data Collection for Wireless Sensor Networks with Distributed Beamforming
- Online Maneuver Design for UAV-Enabled NOMA Systems via Reinforcement Learning
- Unleashing the Potential of Networked Tethered Flying Platforms for B5G/6G: Prospects, Challenges, and Applications
- Time-Weighted Coverage of Integrated Aerial and Ground Networks for Post-Disaster Communications
- Secrecy Transmission in Large-Scale UAV-Enabled Wireless Networks
- Interference Avoidance Position Planning in UAV-assisted Wireless Communication
- Joint 3D Maneuver and Power Adaptation for Secure UAV Communication with CoMP Reception