Our paper entitled “Take the Field from your Smartphone: Leveraging UAVs for Event Filming” is accepted for publication in IEEE TMC.
This paper formulates an event coverage problem, namely, Sport Event Filming, with Connectivity Constraints, in which a team of Unmanned Aerial Vehicles (UAV) fly over a limited field in order to track the movements of an object (e.g., of the ball) and to deliver a video stream of the events (e.g., ball passes, goals) to the spectators meeting certain timeliness and video quality criteria. In addition to a mathematical model that determines the sequence of optimum movements for the UAVs, we also provide dynamic, artificial potential function based, distributed UAV movement schemes to optimize networking performance.
Our paper entitled “Live multicast video streaming from drones: an experimental study” is accepted for publication in Autonomous Robots.
In this paper, we present and evaluate a multicast framework for point-to-multipoint and multipoint-to-point-to-multipoint video streaming. We evaluate the proposed application-layer rate-adaptive multicast video streaming over an aerial ad-hoc network that uses IEEE 802.11 in terms of goodput, delay, and packet loss.
Our paper entitled “Guarded by Gamora: How Access Control Balances Out Waiting Times in Transport Systems” is accepted for publication in International Conference on Intelligent Transportation Systems (ITSC).
The paper considers a transport system with passengers traveling between stations in periodically arriving cabins. We propose and evaluate an access control algorithm that dynamically limits the number of passengers who are allowed to board the incoming cabin based on the passenger arrival and departure rates in subsequent stations.
Our paper entitled “Drone Networks: Communications, Coordination, and Sensing” is accepted for publication in Ad Hoc Networks Journal.
In this paper, we describe a high-level architecture for the design of a collaborative aerial system consisting of drones with on-board sensors and embedded processing, sensing, coordination, and communication and networking capabilities. We implement a multi-drone system consisting of quadcopters and demonstrate its potential in disaster assistance and area monitoring scenarios. Furthermore, we illustrate design challenges and present potential solutions based on the lessons learned so far.
Our survey entitled “Survey on Unmanned Aerial Vehicle Networks for Civil Applications: A Communications Viewpoint” is accepted in IEEE Communications Surveys and Tutorials.
This comprehensive survey reports the characteristics and requirements of UAV networks for envisioned civil applications over the period 2000–2015 from a communications and networking viewpoint. We survey and quantify quality-of service requirements, network-relevant mission parameters, data requirements, and the minimum data to be transmitted over the network. Furthermore, we elaborate on general networking related requirements such as connectivity, adaptability, safety, privacy, security, and scalability. We also report experimental results from many projects and investigate the suitability of existing communication technologies for supporting reliable aerial networking.
I was invited to give a talk at the FLYNET (Micro and Nano Aerial Vehicle Networks for Civilian Use) workshop held at ETH Zurich, 3-5 November 2014.
My talk was entitled “Communication and Cooperation in Multi-UAV Networks”, where I reported our latest results on multi-hop aerial networks using IEEE 802.11a, n, and ac technologies. Slides of my talk are available on request.
Our paper “Neighbor Cardinality Estimation with Low-Power Transceivers: Implementation and Experimental Results,” is accepted in IEEE Vehicular Technology Conference- Spring 2014.
The paper provides a proof-of-concept and performance test of neighbor estimation algorithms with an implementation on low-power wireless sensor devices. We illustrate the challenges of implementing the recently proposed multi-feedback estimator (MFE) on Z1 sensor devices. We compare the performance of MFE to that of simple neighbor counting.