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Browsing by Author "Hernández Orallo, Enrique"

Now showing items 1-20 of 52

3D Simulation Modeling of UAV-to-Car Communications

HADIWARDOYO, SEILENDRIA ARDITYARAMA; Tavares De Araujo Cesariny Calafate, Carlos Miguel; Cano, Juan-Carlos; Ji, Yusheng; Hernández-Orallo, Enrique; Manzoni, Pietro (Institute of Electrical and Electronics Engineers, 2019-01-23)

[EN] In this paper, we propose a realistic model for simulating communications between unmanned aerial vehicles (UAVs), or drones, and ground vehicles, which can support mobile infrastructure to broadcast alerts in emergency ...
A Discretized Approach to Air Pollution Monitoring Using UAV-based Sensing

Alvear-Alvear, Óscar; Tavares De Araujo Cesariny Calafate, Carlos Miguel; Zema, Nicola; Natalizio, Enrico; Hernández-Orallo, Enrique; Cano, Juan-Carlos; Manzoni, Pietro (Springer-Verlag, 2018)

[EN] Recently, Unmanned Aerial Vehicles (UAVs) have become a cheap alternative to sense pollution values in a certain area due to their flexibility and ability to carry small sensing units. In a previous work, we proposed ...
A Fast Model for Evaluating the Detection of Selfish Nodes Using a Collaborative Approach in MANETs

Hernández Orallo, Enrique; Serrat Olmos, Manuel David; Cano Escribá, Juan Carlos; Tavares de Araujo Cesariny Calafate, Carlos Miguel; Manzoni, Pietro (Springer Verlag (Germany), 2014-02)

Mobilead-hocnetworks(MANETs)relyonnetworkcooperationschemestowork properly. Nevertheless, if nodes have a selfish behaviour and are unwilling to cooperate, the overall network performance could be seriously affected. The ...
A novel approach for the fast detection of black holes in mobile ad hoc networks

Serrat Olmos, Manuel David; Hernández Orallo, Enrique; Cano Escribá, Juan Carlos; Tavares de Araujo Cesariny Calafate, Carlos Miguel; Manzoni, Pietro (SAGE Publications (UK and US), 2013)

Mobile ad hoc networks are infrastructure-less wireless networks that rely on node cooperation to properly work. In this kind of networks, attack detection and reaction is a key issue to the whole network. The most common ...
A Representative and Accurate Characterization of Inter-contact Times in Mobile Opportunistic Networks

Hernández Orallo, Enrique; Cano Escribá, Juan Carlos; Tavares de Araujo Cesariny Calafate, Carlos Miguel; Manzoni, Pietro (ACM, 2013-11)

A representative characterisation of inter-contact times between nodes is essential for the performance evaluation of mobile networks. The most common characterization of inter-contact times is based on the study of the ...
A SIR-based model for contact-based messaging applications supported by permanent infrastructure

Conejero, J. Alberto; Hernández-Orallo, Enrique; Manzoni, Pietro; Murillo-Arcila, Marina (American Institute of Mathematical Sciences, 2019-09)

[EN] In this paper, we focus on the study of coupled systems of ordinary differential equations (ODEs) describing the diffusion of messages between mobile devices. Communications in mobile opportunistic networks take place ...
An analytical evaluation of a Map-based Sensor-data Delivery Protocol for VANETs

Martínez Tornell, Sergio; Hernández Orallo, Enrique; Tavares de Araujo Cesariny Calafate, Carlos Miguel; Cano Escribá, Juan Carlos; Manzoni, Pietro (IEEE, 2013-06-04)

The Delay Tolerant Networks (DTN) approach is considered the best strategy to address the specific issues of the VANETs, namely high mobility, variable node density or frequent radio obstacles. Several protocols have ...
An Analytical Model Based on Population Processes to Characterize Data Dissemination in 5G Opportunistic Networks

Hernández-Orallo, Enrique; Murillo Arcila, Marina; Cano, Juan-Carlos; Tavares De Araujo Cesariny Calafate, Carlos Miguel; Conejero, J. Alberto; Manzoni, Pietro (Institute of Electrical and Electronics Engineers, 2018)

[EN] The scarcity of bandwidth due to the explosive growth of mobile devices in 5G makes the offloading messaging workload to Wi-Fi devices that use opportunistic connections, a very promising solution. Communications in ...
Analytical evaluation of the performance of contact-based messaging applications

Hernández Orallo, Enrique; Murillo Arcila, Marina; Tavares de Araujo Cesariny Calafate, Carlos Miguel; Cano Escribá, Juan Carlos; Conejero Casares, José Alberto; Manzoni, Pietro (Elsevier, 2016-12-24)

Communications in mobile opportunistic networks, instead of using the Internet infrastructure, take place upon the establishment of ephemeral contacts among mobile nodes using direct communication. In this paper, we ...
Aplicaciones de mensajería para dispositivos móviles basadas en comunicación punto a punto local

Fernández Delegido, David (Universitat Politècnica de València, 2016-09-07)

[ES] El objetivo de este trabajo es realizar un análisis del funcionamiento de la comunicación entre dispositivos móviles locales para el intercambio y difusión de mensajes. Para ello se ha diseñado una aplicación para ...
CoCoWa: A Collaborative Contact-based Watchdog for Detecting Selfish Nodes

Hernández-Orallo, Enrique; Serrat Olmos, Manuel David; Cano, Juan-Carlos; Tavares de Araujo Cesariny Calafate, Carlos Miguel; Manzoni, Pietro (Institute of Electrical and Electronics Engineers (IEEE), 2015-06)

[EN] Mobile Ad-hoc Networks (MANETs) assume that mobile nodes voluntary cooperate in order to work properly. This cooperation is a cost-intensive activity and some nodes can refuse to cooperate, leading to a selfish node ...
Cooperation techniques to improve peer-to-peer wireless networks security

Serrat Olmos, Manuel David (Editorial Universitat Politècnica de València, 2013-10-15)

Computer networks security is a topic which has been extensively researched. This research is fully justified when one notices the dimensions of the problem faced. One can easily identify different kinds of networks, a ...
Data Transmissions using Hub Nodes in Vehicular Social Networks

Vegni, Anna Maria; Souza, Camilo; Loscrí, Valeria; Hernández-Orallo, Enrique; Manzoni, Pietro (Institute of Electrical and Electronics Engineers, 2020-07-01)

[EN] Vehicular Social Networks (VSNs) consist of groups of individuals (i.e., people) who may share common interests, preferences and needs in the context of temporal spatial proximity on roads. In this environment, the ...
Desarrollo de una aplicación distribuida para dispositivos IOS

Querol Morata, Javier (Universitat Politècnica de València, 2012-05-10)

Desarrollo de una aplicación distribuida para dispositivos IOS usando técnicas de localización y realidad aumentada.
Diseño de un nuevo sistema automatizado de control de horas de vuelo

Pozuelo Romero, José Manuel (Universitat Politècnica de València, 2016-09-23)

[ES] De acuerdo a la legislación actual, todo piloto de una aeronave, tiene que llevar un control de las horas de vuelo, con el objetivo de no sobrepasar un determinado límite. Este control, que en las aerolíneas comerciales ...
Empirical Study and Modeling of Vehicular Communications at Intersections in the 5 GHz Band

Hadiwardoyo, Seilendria Ardityarama; Tomás Domínguez, Andrés Enrique; Hernández-Orallo, Enrique; Tavares de Araujo Cesariny Calafate, Carlos Miguel; Cano, Juan-Carlos; Manzoni, Pietro (Hindawi Limited, 2017)

[EN] Event warnings are critical in the context of ITS, being dependent on reliable and low-delay delivery ofmessages to nearby vehicles. One of the main challenges to address in this context is intersection management. ...
Estudio del consumo energético de dispositivos móviles en redes oportunísticas

HERRERA TAPIA, JORGE (Universitat Politècnica de València, 2015-07-28)

[EN] The duration of batteries is a key factor that must be considered in the design and deployment of applications and services for mobile devices. The users of this technology are not aware of the energetic impact of the ...
Evaluación y Modelado de Redes Oportunistas

Chancay Garcia, Leonardo Javier (Universitat Politècnica de València, 2019-07-29)

[ES] La disponibilidad y el rendimiento de las actuales tecnologías inalámbricas como WiFi o 4G, pueden tener serios problemas de congestión y propagación, especialmente en espacios muy concurridos, o bien ser inaccesibles ...
Evaluating and Enhancing Information Dissemination in Urban Areas of Interest using Opportunistic Networks

Chancay-Garcia, Leonardo Javier; Hernández-Orallo, Enrique; Manzoni, Pietro; Tavares De Araujo Cesariny Calafate, Carlos Miguel; Cano, Juan-Carlos (Institute of Electrical and Electronics Engineers, 2018)

[EN] Opportunistic networks can provide an alternative way to support the diffusion of information in special locations within a city, particularly in crowded spaces, where current wireless technologies can exhibit congestion ...
Evaluating How Smartphone Contact Tracing Technology Can Reduce the Spread of Infectious Diseases: The Case of COVID-19

Hernández-Orallo, Enrique; Manzoni, Pietro; Tavares De Araujo Cesariny Calafate, Carlos Miguel; Cano, Juan-Carlos (Institute of Electrical and Electronics Engineers, 2020)

[EN] Detecting and controlling the diffusion of infectious diseases such as COVID-19 is crucial to managing epidemics. One common measure taken to contain or reduce diffusion is to detect infected individuals and trace ...