Rodolfo W. L. Coutinho

Concordia University Montreal · Department of Electrical and Computer Engineering

Metaverse and affective computing are two promising areas. We envision a new generation of smart metaverse that will consider affective computing to develop artificial intelligence (AI)-empowered avatars capable of expressing emotions and enhancing interactions on users' metaverse sessions. This paper advocates for the symbiotic design of affective...

The advancements in Internet of Things (IoT) and embedded systems, 5G networks and next-generation wireless systems, and embedded and distributed artificial intelligence are empowering Industry 4.0. In this new industrial era, smart autonomous and connected systems will improve efficiency, reduce cost and pollution, and increase productivity and sa...

Envisioned virtual reality (VR) systems include mobility as one of the important features of users’ when interacting with virtual environments and objects. Thus, VR content encoding will be processed on cloud servers and delivered to users through the network, as head-mounted headsets (HMDs) have limited computation capabilities. Therefore, network...

Marine farms must employ innovative solutions and new technologies to increase productivity and supply the seafood demand sustainably. In this paper, we propose a novel four-layers architecture for smart marine farms. The proposed architecture relies on recent advancements and proposes the integration of Internet of Things (IoT) and Internet of Und...

5G-enabled Tactile Internet (TI) will rely on sensors, actuators, and ultra-reliable and ultralow latency communication for providing haptic human-machine interaction services. However, stringent requirements in terms of high reliability and sub-millisecond latency pose many daunting challenges that have limited the development of Tl services. In t...

Internet of Things (IoT) and 5G network are fundamental building blocks for Industrial Internet of Things (IIoT). IoT has enabled real-time monitoring and actuation in industrial floors and machinery,aimed at improving the efficiency and safety of industrial activities and processes. On the other hand,5G networks will provide ultra-reliable and low...

Underwater wireless sensor networks (UWSNs) have emerged as an enabling technology for aquatic monitoring. However, data delivery in UWSNs is challenging, due to the harsh aquatic environment and characteristics of the underwater acoustic channel. In recent years, underwater nodes with multi-modal communication capabilities have been proposed to cr...

North Atlantic Right Whales (NARW) is at a dangerous risk of extinction. Nowadays, there are approximately 360 individuals. These animals have been listed in the Endangered Species Act since 1970. While whaling was the principal source of risk for the survival of right whales in the past centuries, their current threats are vessel strikes, entangle...

Cybersecurity is one of the building blocks in need of increasing attention in Internet of things (IoT) applications. IoT has become a popular target for attackers seeking sensitive and personal user data, computing infrastructure for massive attacks, or aimed at compromising critical applications. Worryingly, the industrial race toward the forefro...

Internet of Underwater Things (IoUTs) has gained increased attention thanks to the recent developments in underwater communication and sensing technologies. IoUTs will employ heterogeneous underwater sensor nodes with diverse underwater communication technologies, for sensing their surrounds and improve ocean awareness. Despite the current advancem...

Internet of Underwater Things (IoUTs) has been proposed to collect data from aquatic environments, in a large-scale and autonomous manner. These networks currently consider the acoustic channel is as the most viable technology for underwater wireless communication. By using acoustic modems, underwater sensor nodes are capable of collaboratively sen...

Underwater wireless sensor networks (UWSNs) have been proposed for ocean monitoring. In comparison with ocean monitoring technologies currently in use, UWSNs have the potential to revolutionize ocean monitoring applications by enabling (quasi) real-time data acquisition. However, the use of the acoustic channel as well as the characteristics of the...

The next revolution of industrial applications, known as smart industry or industry 4.0, will rely on Internet of things (IoT) to automate the monitoring, inspection, and control of industrial equipment and processes. In industry 4.0, efficient content delivery is one of the fundamental challenges that still need to be addressed. Nowadays, the prom...

Internet of Underwater Things (IoUTs) has emerged as an evolution of traditional underwater wireless sensor networks, with programmable nodes interconnected to the Internet. Despite the advancements, IoUTs will still face critical challenges imposed by the use of the lossy and energy-hungry underwater acoustic channel. Two major critical challenges...

In recent years, the OR paradigm has been shown as one of the most viable solutions at the network layer for efficient data delivery under the nosily underwater acoustic channel. Since then, several OR protocols for underwater sensor networks, with major and minor variations, were proposed in the literature. While the performance of these protocols...

Initiatives all around the world, funded by industries and governments, have devoted tremendous efforts to develop connected and autonomous vehicles (CAVs). Nowadays, different CAV prototypes are being tested on the roads. The natural next step on the evolution of area will be the provisioning of info- tainment applications for enjoyable commutes a...

Multi-channel cognitive radio ad hoc networks (CRAHNs) and information-centric networking (ICN) will be in- dispensable for enabling envisioned multimedia-based smart ser- vices within the umbrella of smart cities. Cognitive radios enable the efficient and opportunistic use of spectrum bands by using va- cant licensed channels, whereas information-...

The information-centric networking (ICN) paradigm has gained increasing attention as a solution for boosting content delivery in vehicular network applications. The content-naming oriented search and in-network data caching procedures of ICN can improve content delivery by avoiding the need to determine and maintain end-to-end routing paths in vehi...

Despite the seminal developments, underwater wireless sensor networks (UWSNs) have the potential to empower humanitarian applications on the oceans. UWSNs have the ability to sense locations in the underwater environment where human beings cannot see, process data locally, and transmit them via underwater wireless communication. In this paper, we p...

Governmental, scientific and industrial initia- tives are developing a new era of smart transportation systems, ambitiously aimed at overcoming the limitations of current transportation infrastructures. These initiatives are designed to cooperate a safer, efficient, eco-friendly and enjoyable transportation for people and goods in large urban areas...

Mobility has a dual role in underwater wireless sensor networks. On one hand, it might diminish the performance of networking protocols and impair network connectivity. On the other hand, it might improve data collection and boost networking-based services. In this paper, we discuss the potentials of exploring the controlled mobility of underwater...

Efficient content delivery in vehicular networks will play a funda- mental role in empowering envisioned vehicular and smart trans- portation applications. However, the peculiar characteristics of ve- hicular networks (e.g., high mobility, dynamic network topologies, and intermittent connectivity), as well as the string QoS requirements of the appl...

Oceans are a great unknown. To change this worryingly reality, underwater wireless sensor networks (UWSNs) have been proposed for the automated and real-time data collection from ocean, including the life and events beneath them. Currently, the underwater acoustic channel is the most viable technology for long-range underwater wireless communicatio...

Recent advancements in underwater wireless sensor networks (UWSNs) are enabling day-one underwater monitoring applications. However, energy efficient and reliable UWSNs must be developed for achieving large scale and sustainable underwater monitoring and exploration applications. In this regard, the use of the underwater acoustic channel poses seve...

Multimedia data traffic will explosively increase in vehicular networking scenarios as the current advances in vehicular communication technologies and connected cars penetrate on the market. However, current data dissemination protocols and even the host-centric content delivery paradigm will not support the anticipated traffic load without degrad...

The ubiquitous connectivity between vehicles and smart transportation infrastructure will facilitate the information flow nec- essary for empowering smart service for efficient, safe and eco-friendly transportation of people and goods. Although vehicular communication technologies quickly advance towards ubiquitously connected cars, the design of n...

Every year, natural and human-induced disasters result in infrastructural damages, monetary costs, distresses, injuries and deaths. Unfortunately, climate change is strengthening the destructive power of natural disasters. In this context, Internet-of-Things (IoT)-based disaster detection and response systems have been proposed to cope with disaste...

Underwater wireless sensor networks (UWSNs) are emerging to enable large-scale ocean monitoring with the goal of reducing the human knowledge gap of underwater environments and the life underneath them. However, several challenges still limit the deployments of UWSNs to small-scale and confined underwater monitoring applications. The goals of this t...

Underwater wireless sensor networks (UWSNs) have been proposed for autonomous monitoring of underwater environments. Despite the recent advances on underwater acoustic modems, unreliable data delivery and high energy cost are two critical research problems that remain in UWSNs. In this context, energy-efficient and reliable data collection protocol...

Underwater wireless sensor networks (UWSNs) will pave the way for a new era of underwater monitoring and actuation applications. The envisioned landscape of UWSN applications will help us learn more about our oceans, as well as about what lies beneath them. They are expected to change the current reality where no more than 5% of the volume of the o...

Underwater wireless sensor networks (UWSNs) emerge as an enabling technology for the monitoring of vast areas of aquatic environments. This technology will pave the way for future large-scale applications of ocean monitoring, which will help to change the worryingly current reality where oceans are completely unknown. However, due to the harsh natu...

In this paper, we devise an analytical framework for the performance evaluation of communication void-handling algorithms designed for underwater wireless sensor networks (UWSNs). Geographic and opportunistic routing (GOR) have been shown efficient for multi-hop data delivery in UWSNs. However, geo-routing suffers from a serious drawback known as c...

In underwater sensor networks, the design of energy efficient and reliable data collection protocols is a daunting challenge. In this context, topology control and opportunistic routing are promising techniques for improving reliability and conserve energy. However, due to the challenges of the underwater acoustic channel, the vast knowledge acquir...

Underwater sensor networks have enabled a new era in scientific and industrial underwater monitoring and exploration applications. However, these networks are energy-constrained and, more problematically, energy-hungry, as a consequence of the use of underwater acoustic links. In this work, we thoroughly review potential techniques for greening und...

The unique characteristics of the underwater acoustic channel impose many challenges that limit the utilization of underwater sensor networks. In this context, opportunistic routing, which has been extensively investigated in terrestrial wireless ad hoc network scenarios, has greater potential for mitigating drawbacks from underwater acoustic commu...

The problem of reliable data delivery at low energy cost arises as one of the most challenging research topics in underwater wireless sensor networks (UWSNs). Reliable data delivery is demanding because of the acoustic channel impairments and channel fading. Moreover, it is energy hungry given the high cost of acoustic communication. In wireless ad...

Underwater wireless sensor networks (UWSNs) have been showed as a promising technology to monitor and explore the oceans in lieu of traditional undersea wireline instruments. Nevertheless, the data gathering of UWSNs is still severely limited because of the acoustic channel communication characteristics. One way to improve the data collection in UW...

Aquatic environment corresponds to more than 70% of the Earth’s surface mostly still unknown and unexplored. Underwater wireless sensor networks have recently been proposed as a way to observe and explore these environments. However, the efficient data delivery is still a challenging issue in these networks because of the impairments of the acousti...

Energy efficient and reliable communication are two very important and conflicting requirements in the design of large-scale, self-organizing wireless sensor networks (WSNs). By reducing the transmission power level of the nodes, energy conservation is achieved whereas the communication reliability is degraded. We propose a novel opportunistic rout...

Local maximum problem, where the node fails in determine the next-hop neighbor to continue forwarding the packet towards the destination, severely degrades the performance of geographic routing protocols. This degradation is more substantial in underwater sensor networks, that intrinsically have harsh environments and high energy consumption due to...

Efficient protocols for data packet delivery in mobile underwater sensor networks (UWSNs) are crucial to the effective use of this new powerful technology for monitoring lakes, rivers, seas, and oceans. However, communication in UWSNs is a challenging task because of the characteristics of the acoustic channel. In this work, we present a feasible s...

In the next generation wireless networks (NGWNs), where different radio access technologies (RAT) will coexist and work in collaboration to provide ubiquitous access, a mechanism called Joint Call Admission Control (JCAC) will play an important role by deciding whether or not an incoming service request will be accepted according to an admission co...

Underwater sensor networks have recently been proposed as a way to observe and to explore the lakes, rivers, seas, and oceans. A challenging issue in these networks is the communication, mainly due to the impairments of the acoustic transmission. Thus, e�cient mechanisms to improve the data delivery must be proposed. In this work we present a novel...

Underwater sensor networks have recently been proposed as a way to observe and explore the lakes, rives, seas, and oceans. However, due to characteristics of the acoustic medium, efficient protocols for delivering data must exist. In this work, we propose a novel geographic routing protocol with network topology control for underwater sensor networ...

Underwater sensor networks have recently been proposed as a way to observe and explore the lakes, rives, seas, and oceans. However, due to characteristics of the acoustic medium, efficient protocols for delivering data must exist. In this work, we propose a novel geographic routing protocol for underwater sensor networks, that adjusts the depth of...

WiMax network is one of the new alternatives for broadband wireless access. Among its promising applications is the creation of a wireless backhaul support for WiFi traffic. In order to fully take advantage of this application, it will be mandatory to design a Call Admission Control in the WiMax Base Station, which gives support for the integration...

In this paper, we propose an optimal Joint Call Admission Control (JCAC) in next generation wireless networks, where different radio access technologies (RAT) coexist in a co-located way. Moreover, we study the impact of the different RAT's radius coverage area in the system performance and optimal policy structure. The Semi-Markov Decision Process...

In this paper, we propose an optimal Joint Call Admission Control (JCAC) in next generation wireless networks, where different radio access technologies (RAT) coexist in a co-located way, and we study the impact of the different RAT's radius coverage area in the system performance. By assuming that each incoming service request may be admitted in i...

IEEE 802.16 standard or WiMax network is one of the new alternatives for broadband wireless access. Among its promising applications is the creation of a wireless backhaul support for WiFi traffic. In this context, it is mandatory to design a Call Admission Control in the WiMax Base Station for resource allocation for the integration of both networ...

Resumo— Uma análise de um sistema de compartilhamento de recursos multiserviçó e apresentada neste trabalho. A principal contribui aó e o projeto de um Controle de Admissão de chamadas (CAC otimo que considera o impacto do conjunto de atividades envolvidas em uma opera ao de preemp ao em sua decisãó otima, o que até então não foi estudo na literatu...

IEEE 802.16 standard or WiMax network is one of the new alternatives for broadband wireless access. Among its promising applications is the creation of a wireless backhaul support for WiFi traffic. In this context, it is mandatory to design a Call Admission Control in the WiMax Base Station for resource allocation for the integration of both networ...