Exploració per autor "Muñoz Tapia, José Luis"
Ara es mostren els items 1-20 de 83
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A Cross-layer architecture for DVB-S2 Broadband Satellite systems with QoS support
Rendón Morales, Elizabeth; Mata Diaz, Jorge; Muñoz Tapia, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper we propose an architecture to provide Quality of Service (QoS) guarantees for DVB-S2 broadband satellite systems. The proposed architecture provides low complexity on its implementation and can seamlessly ... -
A game theoretic trust model for on-line distributed evolution of cooperation in MANETs
Mejía Fajardo, Marcela; Peña Traslaviña, Néstor; Muñoz Tapia, José Luis; Esparza Martín, Óscar; Alzate Monroy, Marco (2011-01-13)
Article
Accés restringit per política de l'editorialCooperation among nodes is fundamental for the operation of mobile ad hoc networks(MANETs). In such networks, there could be selfish nodes that use resources from other nodes to send their packets but that do not offer ... -
A model for revocation forecasting in public-key infrastructures
Hernández Gañan, Carlos; Mata Diaz, Jorge; Muñoz Tapia, José Luis; Esparza Martín, Óscar; Alins Delgado, Juan José (2015-05-01)
Article
Accés obertOne of the hardest tasks of a certification infrastructure is to manage revocation. This process consists in collecting and making the revocation status of certificates available to users. Research on this topic has focused ... -
A modeling of certificate revocation and its application to synthesis of revocation traces
Hernández Gañán, Carlos; Mata Diaz, Jorge; Muñoz Tapia, José Luis; Hernández Serrano, Juan; Esparza Martín, Óscar; Alins Delgado, Juan José (2012)
Article
Accés restringit per política de l'editorialOne of the hardest tasks of a public key infrastructure (PKI) is to manage revocation. New communication paradigms push the revocation system to the limit and an accurate resource assessment is necessary before implementing ... -
A protocol for data exchange with free samples using smart contracts
Genés Durán, Rafael; Hernández Serrano, Juan; Esparza Martín, Óscar; Soriano Ibáñez, Miguel; Muñoz Tapia, José Luis; Bellés Muñoz, Marta (Jornadas de Ingeniería Telemática (JITEL), 2021)
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Accés obertDistrust between data providers and data consumers is one of the main obstacles hampering digitaldata commerce to take off. Data providers want to get paid for what they offer, while data consumers want to know exactly ... -
A review of trust modeling in ad hoc networks
Mejia, M; Peña, N; Muñoz Tapia, José Luis; Esparza Martín, Óscar (2009-01)
Article
Accés restringit per política de l'editorialFindings The study identifies the main components that a trust model must provide, and compares the way they are implemented. It finds that the lack of unity in the different proposed approaches makes it difficult to ... -
A simple closed-form approximation for the packet loss rate of a TCP connection over wireless links
Mata Diaz, Jorge; Alins Delgado, Juan José; Muñoz Tapia, José Luis; Esparza Martín, Óscar (2014-09-15)
Article
Accés obertThis letter presents a new and simple model for a TCP flow experiencing random packet losses due to both transmission errors and congestion events. From this model, we will derive a straightforward expression of a unified ... -
Adaptive IP scheduler design to support QoS guarantees over satellite systems
Rendón Morales, Elizabeth; Mata Diaz, Jorge; Alins Delgado, Juan José; Muñoz Tapia, José Luis; Esparza Martín, Óscar (2012-06)
Article
Accés obertThis paper presents an adaptive algorithm for man-aging the weight values of the Weighted Round Robin (WRR)scheduler to provide End-to-End (E2E) Quality of Service (QoS)guarantees for Broadband satellite ... -
Adaptive packet scheduling for the support of QoS over DVB-S2 satellite systems
Rendón Morales, Elizabeth; Mata Diaz, Jorge; Alins Delgado, Juan José; Muñoz Tapia, José Luis; Esparza Martín, Óscar (Springer Verlag, 2011)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper presents an adaptive algorithm for managing the weights of a weighted round robin (WRR) scheduler. The weights calculation depends on the capacity variations present in a Digital Video Broadcasting-Second ... -
An architecture for easy onboarding and key life-cycle management in blockchain applications
Genés Durán, Rafael; Yarlequé Ruesta, Diana; Bellés Muñoz, Marta; Jimenez Viguer, Antonio; Muñoz Tapia, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2020-06-22)
Article
Accés obertNew manufacturing paradigms require a large number of business interactions between multiple cyber-physical systems with different owners. In this context, public distributed ledgers are disruptive because they make it ... -
An infrastructure for detecting and punishing malicious hosts using mobile agent watermarking
Esparza Martín, Óscar; Muñoz Tapia, José Luis; Tomás Buliart, Joan; Soriano Ibáñez, Miguel (2010-04-02)
Article
Accés obertMobile agents are software entities consisting of code, data, and state that can migrate autonomously from host to host executing their code. In such scenario there are some security issues that must be considered. In ... -
Analysis of TCP variants over a QoS DVB-S2 system
Rendón Morales, Elizabeth; Mata Diaz, Jorge; Alins Delgado, Juan José; Muñoz Tapia, José Luis; Esparza Martín, Óscar (ACM Press. Association for Computing Machinery, 2011)
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Accés restringit per política de l'editorialThis paper presents a performance analysis of the TCP protocol considering the DiffServ architecture to provide Quality of Service guarantees working over a Digital Video Broadcasting - Second Generation (DVB-S2) satellite ... -
Analysis of video streaming performance in vehicular networks
Reñé, Sergi; Gañan, Carlos; Caubet Fernández, Juan; Alins Delgado, Juan José; Mata Diaz, Jorge; Muñoz Tapia, José Luis (2011)
Text en actes de congrés
Accés restringit per política de l'editorialVehicular Ad-hoc Networks (VANETs) have been mainly motivated for safety applications, but non-safety applications can also be very helpful to impulse vehicular networks. Among non-safety applications, video streaming ... -
ARQUITECTURA DE XARXES DE COMUNICACIO (Examen 2n Quadr.)
Muñoz Tapia, José Luis (Universitat Politècnica de Catalunya, 2009-04-14)
Examen
Accés restringit a la comunitat UPC -
ARQUITECTURA DE XARXES DE COMUNICACIÓ (1r quadrimestre, 1r parcial)
Muñoz Tapia, José Luis (Universitat Politècnica de Catalunya, 2010-11-03)
Examen
Accés restringit a la comunitat UPC -
ARQUITECTURA DE XARXES DE COMUNICACIÓ [AXC] (2n quadrimestre, control parcial)
Muñoz Tapia, José Luis (Universitat Politècnica de Catalunya, 2010-04-14)
Examen
Accés restringit a la comunitat UPC -
Autopsy of Ethereum's post-merge reward system
Cortes Goicoechea, Mikel; Mohandas Daryanani, Tarun; Muñoz Tapia, José Luis; Bautista Gómez, Leonardo (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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Accés obertLike most modern blockchain networks, Ethereum has relied on economic incentives to promote honest participation in the chain's consensus. The distributed character of the platform, together with the "randomness" or "luck" ... -
Can we run our Ethereum nodes at home?
Cortes Goicoechea, Mikel; Mohandas Daryanani, Tarun; Muñoz Tapia, José Luis; Bautista Gómez, Leonardo (Institute of Electrical and Electronics Engineers (IEEE), 2024)
Article
Accés obertScalability is a common issue among the most used permissionless blockchains, and several approaches have been proposed to solve it. However, tackling scalability while preserving the security and decentralization of the ... -
Certificate revocation system implementation based on the Merkle Hash Tree
Muñoz Tapia, José Luis; Forné Muñoz, Jorge; Esparza Martín, Óscar; Soriano Ibáñez, Miguel (2004-01)
Article
Accés restringit per política de l'editorialPublic-key cryptography is widely used to provide Internet security services. The public-key infrastructure (PKI) is the infrastructure that supports the public-key cryptography, and the revocation of certificates implies ... -
CERVANTES - A certificate validation test-bed
Muñoz Tapia, José Luis; Forné Muñoz, Jorge; Esparza Martín, Óscar; Soriano Ibáñez, Miguel (Springer Berlin / Heidelberg, 2004)
Text en actes de congrés
Accés restringit per política de l'editorialCertificate validation is one of the toughest scalability problems of the PKI. The goal of this paper is to introduce a Java platform for certificate revocation called CERVANTES. CERVANTES pretends to be an easy to extend ...