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Listar por palabra clave "Opportunistic networks"

Mostrando ítems 1-15 de 15

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 ...
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 the Impact of Data Transfer Time in Contact-Based Messaging Applications

Hernández Orallo, Enrique; HERRERA TAPIA, JORGE; Cano Escribá, Juan Carlos; Tavares de Araujo Cesariny Calafate, Carlos Miguel; Manzoni, Pietro (Institute of Electrical and Electronics Engineers (IEEE), 2015-10)

In this letter, we propose an analytical model based on delay differential equations (DDEs) to evaluate the diffusion of messages in groups taking into account the transmission time of themessages. This model was validated ...
FALCON: A New Approach for the Evaluation of Opportunistic Networks

Hernández-Orallo, Enrique; Cano, Juan-Carlos; Tavares De Araujo Cesariny Calafate, Carlos Miguel; Manzoni, Pietro (Elsevier, 2018)

[EN] Evaluating the performance of opportunistic networks with a high number of nodes is a challenging problem. Analytical models cannot provide a realistic evaluation of these networks, and simulations can be very ...
Friendly-Sharing: Improving the Performance of City Sensoring through Contact-Based Messaging Applications

HERRERA-TAPIA, JORGE; Manzoni, Pietro; Hernández Orallo, Enrique; Tomás Domínguez, Andrés Enrique; Tavares de Araujo Cesariny Calafate, Carlos Miguel; Cano Escribá, Juan Carlos (MDPI, 2016)

[EN] Regular citizens equipped with smart devices are being increasingly used as sensors by Smart Cities applications. Using contacts among users, data in the form of messages is obtained and shared. Contact-based messaging ...
FSF: Applying machine learning techniques to data forwarding in socially selfish Opportunistic Networks

Souza, Camilo; MOTA, EDJAIR; Soares, Diogo; Manzoni, Pietro; Cano, Juan-Carlos; Tavares De Araujo Cesariny Calafate, Carlos Miguel; Hernández-Orallo, Enrique (MDPI AG, 2019-05-23)

[EN] Opportunistic networks are becoming a solution to provide communication support in areas with overloaded cellular networks, and in scenarios where a fixed infrastructure is not available, as in remote and developing ...
General and mixed linear regressions to estimate inter-contact times and contact duration in opportunistic networks

Borrego, Carlos; Hernández-Orallo, Enrique; Magaia, Naercio (Elsevier, 2019-10)

[EN] In the context of Opportunistic Networking (OppNet), routing and delivery algorithms used for content dissemination employ different metrics to perform accurate decisions. It has been shown that of these metrics, the ...
How Human Mobility Models Can Help to Deal with COVID-19

Hernández-Orallo, Enrique; Armero-Martínez, Antonio (MDPI AG, 2021-01)

[EN] One of the key factors for the spreading of human infections, such as the COVID-19, is human mobility. There is a huge background of human mobility models developed with the aim of evaluating the performance of mobile ...
Modelización de la difusión y persistencia de datos en redes oportunistas de comunicación móvil

Orea Hueso, Carlos (Universitat Politècnica de València, 2019-10-25)

[EN] In this thesis, we will study how mobile devices can share and keep information and what are the best protocols to achieve different goals. Moreover, we will try to guess which mathematical models best describe our ...
New approaches for characterizing inter-contact times in opportunistic networks

Hernández Orallo, Enrique; Cano Escribá, Juan Carlos; Tavares de Araujo Cesariny Calafate, Carlos Miguel; Manzoni, Pietro (Elsevier, 2016-12-01)

Characterizing the contacts between nodes is of utmost importance when evaluating mobile opportunistic networks. The most common characterization of inter-contact times is based on the study of the aggregate distribution ...
Optimising message broadcasting in opportunistic networks

Chancay-García, Leonardo; Hernández-Orallo, Enrique; Manzoni, Pietro; Vegni, Anna Maria; Loscrí, Valeria; Cano, Juan-Carlos; Tavares De Araujo Cesariny Calafate, Carlos Miguel (Elsevier, 2020-05-01)

[EN] Message Broadcasting in Opportunistic Networks is based on the opportunity of establishing contacts among mobiles nodes for message exchange. Nevertheless, as the amount of information transmitted in a contact is ...
Simulating Opportunistic Networks: Survey and Future Directions

Dede, Jens; Förster, Anna; Hernández-Orallo, Enrique; Herrera-Tapia, Jorge; Kuladinithi, Koojana; Kuppusamy, Vishnupriya; Manzoni, Pietro; bin Muslim, Anas; Udugama, Asanga; Vatandas, Zeynep (Institute of Electrical and Electronics Engineers, 2018)

[EN] Simulation is one of the most powerful tools we have for evaluating the performance of opportunistic networks (OppNets). In this paper, we focus on available tools and mod- els, compare their performance and precision ...