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Sobre

Sobre

Manuel Alberto Pereira Ricardo é Licenciado (1988) e Doutor (2000) em Engenharia Eletrotécnica e de Computadores, ramo de Telecomunicações, pela Faculdade de Engenharia da Universidade do Porto (FEUP). Atualmente Manuel Ricardo é professor catedrático da FEUP onde leciona unidades curriculares de Comunicações Móveis e Redes de Computadores nos cursos de mestrado e de doutoramento em Engenharia Eletrotécnica e de Computadores, Engenharia Informática e de Computação e Telecomunicações. É membro da Comissão Executiva do DEEC da FEUP e do Conselho Científico do Programa Doutoral em Engenharia Eletrotécnica e de Computadores. Ao longo do seu percurso profissional coordenou no INESC TEC a área de Wireless Networks (2001-2011), o Centro de Telecomunicações e Multimédia (2011-2018), foi Administrador do INESC TEC (2018-2021), sendo atualmente diretor associado deste instituto com foco nas telecomunicações. Criou a Rede Temática nacional de Comunicações Móveis (RTCM, 2004). É membro do “Steering Committee” do consórcio do simulador de redes de comunicações ns-3. Participou em 30+ projetos de investigação e tem 150+ artigos publicados. As suas áreas de investigação são as redes de comunicações móveis, qualidade de serviço, gestão de recursos rádio, controlo de congestionamento de redes, caracterização de tráfego e avaliação de desempenho.

Detalhes

Detalhes

  • Nome

    Manuel Ricardo
  • Cargo

    Diretor Associado
  • Desde

    01 janeiro 1996
027
Publicações

2024

Vision-Radio Experimental Infrastructure Architecture Towards 6G

Autores
Teixeira, FB; Ricardo, M; Coelho, A; Oliveira, HP; Viana, P; Paulino, N; Fontes, H; Marques, P; Campos, R; Pessoa, LM;

Publicação
CoRR

Abstract

2024

Autonomous Control and Positioning of a Mobile Radio Access Node Employing the O-RAN Architecture

Autores
Queirós, G; Correia, P; Coelho, A; Ricardo, M;

Publicação
2024 19TH WIRELESS ON-DEMAND NETWORK SYSTEMS AND SERVICES CONFERENCE, WONS

Abstract
Over the years, mobile networks were deployed using monolithic hardware based on proprietary solutions. Recently, the concept of open Radio Access Networks (RANs), including the standards and specifications from O-RAN Alliance, has emerged. It aims at enabling open, interoperable networks based on independent virtualized components connected through open interfaces. This paves the way to collect metrics and to control the RAN components by means of software applications such as the O-RAN-specified xApps. We propose a private standalone network leveraged by a mobile RAN employing the O-RAN architecture. The mobile RAN consists of a radio node (gNB) carried by a Mobile Robotic Platform autonomously positioned to provide on-demand wireless connectivity. The proposed solution employs a novel Mobility Management xApp to collect and process metrics from the RAN, while using an original algorithm to define the placement of the mobile RAN. This allows for the improvement of the connectivity offered to the User Equipments.

2023

Traffic-aware gateway placement and queue management in flying networks

Autores
Coelho, A; Campos, R; Ricardo, M;

Publicação
AD HOC NETWORKS

Abstract
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 concept of flying networks composed of UAVs as a flexible and agile solution to provide on-demand wireless connectivity anytime, anywhere. However, state of the art works have been focused on optimizing the placement of the access network providing connectivity to ground users, overlooking the backhaul network design. In order to improve the overall Quality of Service (QoS) offered to ground users, the placement of Flying Gateways (FGWs) and the size of the queues configured in the UAVs need to be carefully defined to meet strict performance requirements. The main contribution of this article is a traffic-aware gateway placement and queue management (GPQM) algorithm for flying networks. GPQM takes advantage of knowing in advance the positions of the UAVs and their traffic demand to determine the FGW position and the queue size of the UAVs, in order to maximize the aggregate throughput and provide stochastic delay guarantees. GPQM is evaluated by means of ns-3 simulations, considering a realistic wireless channel model. The results demonstrate significant gains in the QoS offered when GPQM is used.

2023

Wireless technologies towards 6G

Autores
Campos, R; Ricardo, M; Pouttu, A; Correia, LM;

Publicação
EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING

Abstract
This Special Issue originates from the international conference 2021 Joint EuCNC & 6G Summit (Joint European Conference on Networks and Communications and 6G Summit), which was held in June 2021 in virtual format. The Technical Programme Chairs of the conference selected the best papers and invited authors to submit an extended version of their paper by at least one-third of their length. Only the top ranked papers were invited to this Special Issue, in order to fulfil its purpose. The main target was to collect and present quality research contributions in the most recent activities related to technologies, systems and networks beyond 5G. Through this Special Issue, the state-of-the-art is presented and the new challenges highlighted, regarding the latest advances on systems and network perspectives that are already being positioned beyond 5G, bridging as well with the evolution of 5G, including applications and trials. Therefore, the motivation for this Special Issue is to present the latest and finest results on the evolution of research of mobile and wireless communications, coming, but not exclusively (since Joint EuCNC & 6G Summit is a conference open to the whole research community), from projects co-financed by the European Commission within its R&D programmes.

2023

UAV-Assisted Wireless Communications: An Experimental Analysis of A2G and G2A Channels

Autores
Shafafi, K; Almeida, EN; Coelho, A; Fontes, H; Ricardo, M; Campos, R;

Publicação
Simulation Tools and Techniques - 15th EAI International Conference, SIMUtools 2023, Seville, Spain, December 14-15, 2023, Proceedings

Abstract
Unmanned Aerial Vehicles (UAVs) offer promising potential as communications node carriers, providing on-demand wireless connectivity to users. While existing literature presents various wireless channel models, it often overlooks the impact of UAV heading. This paper provides an experimental characterization of the Air-to-Ground (A2G) and Ground-to-Air (G2A) wireless channels in an open environment with no obstacles nor interference, considering the distance and the UAV heading. We analyze the received signal strength indicator and the TCP throughput between a ground user and a UAV, covering distances between 50 m and 500 m, and considering different UAV headings. Additionally, we characterize the antenna’s radiation pattern based on UAV headings. The paper provides valuable perspectives on the capabilities of UAVs in offering on-demand and dynamic wireless connectivity, as well as highlights the significance of considering UAV heading and antenna configurations in real-world scenarios. © ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2024.

Teses
supervisionadas

2022

Towards a Digital-Twin Based, Multi-sided Market of Data-enabled Product-Services Systems

Autor
Henrique Diogo Cardoso da Silva

Instituição
UP-FEUP

2022

DESENVOLVIMENTO DE PROCESSOS, PROCEDIMENTOS E ESTANDARDIZAÇÃO DE ARMAZÉNS

Autor
CATARINA GONÇALVES BARRIAS

Instituição
IPP-ISEP

2021

SPOT – jogo sério baseado em realidade aumentada para a prevenção do melanoma

Autor
Ana Catarina Rodrigues Ferreira

Instituição
UP-FEUP

2021

Selective Applicative Functors & Probabilistic Programming

Autor
Armando João Isaias Ferreira dos Santos

Instituição
UM

2021

Detecting fake behavior in online social networks using smartphone data

Autor
Nirbhaya Shaji

Instituição
UP-FCUP