32 citations · 71 across the 24 of their papers we have counts for
25 papers
Modular Design and Experimental Evaluation of 5G Mobile Cell Architectures Based on Overlay and Integrated Models
José Ruela, Ivan Cojocaru, André Coelho +2
This paper presents the concept, architectural design, and performance evaluation of a 5G Mobile Cell (MC) used to provide 5G wireless connectivity to User Equipment (UE) in areas…
Autonomous Vision-Aided UAV Positioning for Obstacle-Aware Wireless Connectivity
Kamran Shafafi, Manuel Ricardo, Rui Campos
Unmanned Aerial Vehicles (UAVs) offer a promising solution for enhancing wireless connectivity and Quality of Service (QoS) in urban environments, acting as aerial Wi-Fi access poi…
Joint Optimization of Multi-UAV Deployment and 3D Positioning in Traffic-Aware Aerial Networks
Kamran Shafafi, Alaa Awad Abdellatif, Manuel Ricardo +1
Unmanned Aerial Vehicles (UAVs) have emerged as a key enabler for next-generation wireless networks due to their on-demand deployment, high mobility, and ability to provide Line-of…
A Framework to Develop and Validate RL-Based Obstacle-Aware UAV Positioning Algorithms
Kamran Shafafi, Manuel Ricardo, Rui Campos
Unmanned Aerial Vehicles (UAVs) increasingly enhance the Quality of Service (QoS) in wireless networks due to their flexibility and cost-effectiveness. However, optimizing UAV plac…
On-demand 5G Private Networks using a Mobile Cell
André Coelho, José Ruela, Gonçalo Queirós +6
This paper proposes the Mobile Cell (MC) concept for on-demand 5G private networks. The MC is designed to extend, restore, and reinforce 5G wireless coverage and network capacity o…
Traffic and Obstacle-aware UAV Positioning in Urban Environments Using Reinforcement Learning
Kamran Shafafi, Manuel Ricardo, Rui Campos
Unmanned Aerial Vehicles (UAVs) are suited as cost-effective and adaptable platforms for carrying Wi-Fi Access Points (APs) and cellular Base Stations (BSs). Implementing aerial ne…
Vision-Radio Experimental Infrastructure Architecture Towards 6G
Filipe B. Teixeira, Manuel Ricardo, André Coelho +7
Telecommunications and computer vision have evolved separately so far. Yet, with the shift to sub-terahertz (sub-THz) and terahertz (THz) radio communications, there is an opportun…
Resource Allocation for Dataflow Applications in FANETs using Anypath Routing
Juan José López Escobar, Manuel Ricardo, Rui Campos +2
Management of network resources in advanced IoT applications is a challenging topic due to their distributed nature from the Edge to the Cloud, and the heavy demand of real-time da…
Joint Traffic and Obstacle-aware UAV Positioning Algorithm for Aerial Networks
Kamran Shafafi, André Coelho, Rui Campos +1
Unmanned Aerial Vehicles (UAVs) are increasingly used as cost-effective and flexible Wi-Fi Access Points (APs) and cellular Base Stations (BSs) to enhance Quality of Service (QoS).…
Trajectory-Aware Rate Adaptation for Flying Networks
Ruben Queiros, Jose Ruela, Helder Fontes +1
Despite the trend towards ubiquitous wireless connectivity, there are scenarios where the communications infrastructure is damaged and wireless coverage is insufficient or does not…
On the Analysis of Computational Delays in Reinforcement Learning-based Rate Adaptation Algorithms
Ricardo Trancoso, Ruben Queiros, Helder Fontes +1
Several research works have applied Reinforcement Learning (RL) algorithms to solve the Rate Adaptation (RA) problem in Wi-Fi networks. The dynamic nature of the radio link require…
UAV-Assisted Wireless Communications: An Experimental Analysis of A2G and G2A Channels
Kamran Shafafi, Eduardo Nuno Almeida, André Coelho +3
Unmanned Aerial Vehicles (UAVs) offer promising potential as communications node carriers, providing on-demand wireless connectivity to users. While existing literature presents va…
Position-Based Machine Learning Propagation Loss Model Enabling Fast Digital Twins of Wireless Networks in ns-3
Eduardo Nuno Almeida, Helder Fontes, Rui Campos +1
Digital twins have been emerging as a hybrid approach that combines the benefits of simulators with the realism of experimental testbeds. The accurate and repeatable set-ups replic…
Traffic-Aware UAV Placement Using a Generalizable Deep Reinforcement Learning Methodology
Eduardo Nuno Almeida, Rui Campos, Manuel Ricardo
Unmanned Aerial Vehicles (UAVs) acting as Flying Access Points (FAPs) are being used to provide on-demand wireless connectivity in extreme scenarios. Despite ongoing research, the…
Wi-Fi Rate Adaptation using a Simple Deep Reinforcement Learning Approach
Ruben Queiros, Eduardo Nuno Almeida, Helder Fontes +2
The increasing complexity of recent Wi-Fi amendments is making optimal Rate Adaptation (RA) a challenge. The use of classic algorithms or heuristic models to address RA is becoming…
Traffic-aware Gateway Placement and Queue Management in Flying Networks
André Coelho, Rui Campos, Manuel Ricardo
Unmanned Aerial Vehicles (UAVs) have emerged as adequate platforms to carry communications nodes, including Wi-Fi Access Points and cellular Base Stations. This has led to the conc…
Placement and Allocation of Communications Resources in Slicing-aware Flying Networks
André Coelho, Helder Fontes, Rui Campos +1
Network slicing emerged in 5G networks as a key component to enable the use of multiple services with different performance requirements on top of a shared physical network infrast…
A Fast Gateway Placement Algorithm for Flying Networks
Gonçalo Santos, João Martins, André Coelho +3
The ability to operate anywhere, anytime, as well as their capability to hover and carry cargo on board make Unmanned Aerial Vehicles (UAVs) suitable platforms to act as Flying Gat…
Energy-aware Relay Positioning in Flying Networks
Hugo Rodrigues, André Coelho, Manuel Ricardo +1
The ability to move and hover has made rotary-wing Unmanned Aerial Vehicles (UAVs) suitable platforms to act as Flying Communications Relays (FCR), aiming at providing on-demand, t…
Joint Traffic-Aware UAV Placement and Predictive Routing for Aerial Networks
Eduardo Nuno Almeida, André Coelho, José Ruela +2
Aerial networks, composed of Unmanned Aerial Vehicles (UAVs) acting as Wi-Fi access points or cellular base stations, are emerging as an interesting solution to provide on-demand w…
On the Reproduction of Real Wireless Channel Occupancy in ns-3
Renato Cruz, Helder Fontes, José Ruela +2
In wireless networking R&D we typically depend on simulation and experimentation to evaluate and validate new networking solutions. While simulations allow full control over the sc…
A Routing Metric for Inter-flow Interference-aware Flying Multi-hop Networks
André Coelho, Eduardo Nuno Almeida, José Ruela +2
The growing demand for broadband communications anytime, anywhere has paved the way to the usage of Unmanned Aerial Vehicles (UAVs) for providing Internet access in areas without n…
Traffic-aware Gateway Placement for High-capacity Flying Networks
André Coelho, Helder Fontes, Rui Campos +1
The ability to operate virtually anywhere and carry payload makes Unmanned Aerial Vehicles (UAVs) perfect platforms to carry communications nodes, including Wi-Fi Access Points (AP…
A Token-Based MAC Solution for WiLD Point-To-Multipoint Links
Carlos Leocadio, Tiago Oliveira, Pedro Silva +2
The inefficiency of the fundamental access method of the IEEEE 802.11 standard is a well-known problem in scenarios where multiple long range and faulty links compete for the share…