Journal ArticleDOI
UAV-Assisted Emergency Communications: An Extended Multi-Armed Bandit Perspective
Yu Lin,Tianyu Wang,Shaowei Wang +2 more
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This letter investigates how a rotary-wing unmanned-aerial vehicle acts as a wireless base station to provide emergency communication service for a post-disaster area with unknown user distribution and proposes two efficient path planning algorithms.Abstract:
In this letter, we investigate how a rotary-wing unmanned-aerial vehicle (UAV) acts as a wireless base station to provide emergency communication service for a post-disaster area with unknown user distribution. The formulated optimization task is to find out the optimal path starting and ending at the same point to serve as many as possible users under limited battery capacity. We show that this problem can be transformed to an extended multi-armed bandit (MAB) problem, for which we propose two efficient path planning algorithms. Simulation results show that, in terms of the total number of served users, our proposed algorithms outperform the straightforward helical path that scans the entire area by circles with increasing radius.read more
Citations
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Journal ArticleDOI
Multiobjective UAV Path Planning for Emergency Information Collection and Transmission
TL;DR: The results show that the proposed path planning algorithm can significantly improve the normalized Quality-of-Experience (QoE) index and effectively shorten the flight time of each UAV for different assignments.
Journal ArticleDOI
Trajectory Optimization for UAV Emergency Communication With Limited User Equipment Energy: A Safe-DQN Approach
TL;DR: A safe-deep-Q-network (safe-DQN) based UAV trajectory design algorithm is proposed, where the UAV learns to selects the optimal action in reasonable policy sets, achieving a good trade-off between UE energy consumption and uplink throughput.
Journal ArticleDOI
Unmanned Aerial Vehicles enabled IoT Platform for Disaster Management
TL;DR: A holistic view of a UAVs-enabled IoT platform which can provide ubiquitous connectivity to both aerial and ground users in challenging environments such as wildfire management is provided.
Journal ArticleDOI
Location Optimization and User Association For Unmanned Aerial Vehicles Assisted Mobile Networks
TL;DR: This paper proposes a user association strategy to make the UAVs serve almost equal traffic demand, where the optimization task is to minimize the maximum traffic demand of subregions with constraints on the capacity and the shape ofSubregions.
Journal ArticleDOI
RISe of Flight: RIS-Empowered UAV Communications for Robust and Reliable Air-to-Ground Networks
TL;DR: In this article, the authors focus on air-to-ground networks where UAVs equipped with reconfigurable intelligent surfaces (RISs) can fly over selected areas to provide connectivity.
References
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Journal ArticleDOI
Wireless communications with unmanned aerial vehicles: opportunities and challenges
TL;DR: An overview of UAV-aided wireless communications is provided, by introducing the basic networking architecture and main channel characteristics, highlighting the key design considerations as well as the new opportunities to be exploited.
Journal ArticleDOI
Throughput Maximization for UAV-Enabled Mobile Relaying Systems
TL;DR: Numerical results show that by optimizing the trajectory of the relay and power allocations adaptive to its induced channel variation, mobile relaying is able to achieve significant throughput gains over the conventional static relaying.
Journal ArticleDOI
Placement Optimization of UAV-Mounted Mobile Base Stations
TL;DR: A polynomial-time algorithm with successive MBS placement, where the MBSs are placed sequentially starting on the area perimeter of the uncovered GTs along a spiral path toward the center, until all GTs are covered.
Book ChapterDOI
Multi-armed bandit algorithms and empirical evaluation
Joannès Vermorel,Mehryar Mohri +1 more
TL;DR: A new algorithm is described and analyzed, Poker (Price Of Knowledge and Estimated Reward) whose performance compares favorably to that of other existing algorithms in several experiments and proves to be often hard to beat.
Journal ArticleDOI
Taking Drones to the Next Level: Cooperative Distributed Unmanned-Aerial-Vehicular Networks for Small and Mini Drones
TL;DR: The FANET structure and its protocol architecture is surveyed, and a variety of distributed gateway-selection algorithms and cloud-based stability-control mechanisms are addressed, complemented by a range of open challenges.