• A-priori flow bandwidth estimates for dynamic bandwidth allocation in ISP access links 

      Aracil Rico, Javier Upna; Morató Osés, Daniel Upna (2001)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper we study a-priori bandwidth estimation algorithms for TCP flows. An RTT-based bandwidth allocator is proposed, which outperforms a broad class of peak-rate and static allocation flow switching solutions. Our ...
    • About the intuitionistic fuzzy set generators 

      Bustince Sola, Humberto Upna; Mohedano Salillas, Victoria Upna (Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1997)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper form the definition of intuitionistic fuzzy sets we analyze the intuitionistic fuzzy generators and the complementation in these sets. We start by defining the intuitionistic fuzzy generators in order to then ...
    • Adjusting fuzzy automata for string similarity measuring 

      Astrain Escola, José Javier Upna; Villadangos Alonso, Jesús Upna; González de Mendívil Moreno, José Ramón Upna; Garitagoitia Padrones, José Ramón Upna; Fariña Figueredo, Federico Upna (EUSFLAT, 2001)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper, we introduce a fuzzy automaton for computing the similarity between pairs of strings and a genetic method for adjusting its parameters. The fuzzy automaton models the edit operations needed to transform ...
    • Analysis of Internet services in IP over ATM networks 

      Aracil Rico, Javier Upna; Morató Osés, Daniel Upna; Izal Azcárate, Mikel Upna (IEEE, 1999)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This paper presents a trace-driven analysis of IP over ATM services from a user-perceived quality of service standpoint. QoS parameters such as the sustained throughput for transactional services and other ATM layer ...
    • Approximations for end-to-end delay analysis in OBS networks with light load 

      Morató Osés, Daniel Upna; Magaña Lizarrondo, Eduardo Upna; Izal Azcárate, Mikel Upna (IEEE, 2004)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper we provide an analysis of end-to-end delay in OBS networks and a large deviations approximation. The analysis is based on an exponential approximation of the OBS router blocking time and on the assumption ...
    • Arquitectura de publicación automatizada de contenidos educativos supervisados en Internet 

      Arin Irastorza, María Asunción Upna; Magaña Lizarrondo, Eduardo Upna; Astrain Escola, José Javier Upna; Villadangos Alonso, Jesús Upna; González de Mendívil Moreno, José Ramón Upna (1999)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This paper presents an automated publishing architecture of educational and supervised contents over the Internet. The system makes easier the job of publishing educational courses over the network using specific tools ...
    • Arquitectura y diseño de un modelo de red OBS para simulación 

      Espina Antolín, Félix Upna; Armendáriz, Javier; Izal Azcárate, Mikel Upna; Morató Osés, Daniel Upna; Magaña Lizarrondo, Eduardo Upna (2009)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Optical Burst Switching (OBS) es una nueva tecnología de conmutación óptica capaz de soportar una gran demanda de ancho de banda en backbones ópticos con Wavelength Division Multiplexing (WDM). Muchos investigadores están ...
    • Blocking time analysis of OBS routers with arbitrary burst size distribution 

      Morató Osés, Daniel Upna; Izal Azcárate, Mikel Upna; Aracil Rico, Javier Upna; Magaña Lizarrondo, Eduardo Upna; Miqueleiz, J. Upna (IEEE, 2003)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The blocking time distribution for an OBS router is obtained, under the assumption of Poisson-arriving bursts with Pareto, Gaussian and Exponential burst size distributions. Analytical expressions are provided as a ...
    • Characterizing Internet load as a non-regular multiplex of TCP streams 

      Aracil Rico, Javier Upna; Morató Osés, Daniel Upna (IEEE, 2000)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A commonly accepted traffic model for a large population of Internet users consists of a multiplex of Poisson-arriving heavy-tailed streams with the same constant rate (M/G//spl infin/). We show that even though such a ...
    • Collecting packet traces at high speed 

      Aguirre Cascallana, Gorka; Magaña Lizarrondo, Eduardo Upna (2006)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In order to capture packet traces at high speed using a low-cost platform, we have to optimize the networking stack of a general purpose operating system. Different techniques are compared with the final objective of ...
    • Detección de congestión en la Internet europea 

      Hernández, Ana; Magaña Lizarrondo, Eduardo Upna; Izal Azcárate, Mikel Upna; Morató Osés, Daniel Upna (IEEE, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper we present a study about the utilization of one-way delay measurements to detect and characterize network congestion in the european Internet. The experiments have been made using the ETOMIC platfom that ...
    • Detecting disruption periods on TCP servers with passive packet traffic analysis 

      Prieto Suárez, Iria Upna; Izal Azcárate, Mikel Upna; Magaña Lizarrondo, Eduardo Upna; Morató Osés, Daniel Upna (IARIA, 2015)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This paper presents a simple passive algorithm to monitor service availability. The algorithm is based on packet counting over a passive traffic trace of a population of clients accessing servers of interest. The major ...
    • Effective burst preemption in OBS network 

      Klinkowski, Miroslaw; Careglio, Davide; Morató Osés, Daniel Upna; Solé Pareta, Josep (IEEE, 2006)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Burst preemption is the most effective technique to provide Quality of Service (QoS) differentiation in Optical Burst Switching (OBS) networks. Nonetheless, in conventional OBS architectures, when preemption happens the ...
    • The ETOMIC active probing infrastructure: demo proposal 

      Csabai, István; Hága, Péter; Simon, Gábor; Stéger, József; Vattay, Gábor; Magaña Lizarrondo, Eduardo Upna; Morató Osés, Daniel Upna; Izal Azcárate, Mikel Upna; Aracil Rico, Javier Upna (2006)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      ETOMIC (www.etomic.org) is a European Union sponsored effort, that aims at providing a Paneuropean traffic measurement infrastructure. This infrastructure contains 15 PC based active probing nodes equipped with ...
    • ETOMIC advanced network monitoring system for future Internet experimentation 

      Csabai, István; Fekete, Attila; Hága, Péter; Hullár, Béla; Kurucz, Gábor; Laki, Sándor; Mátray, Péter; Stéger, József; Vattay, Gábor; Espina Antolín, Félix Upna; García Jiménez, Santiago Upna; Izal Azcárate, Mikel Upna; Magaña Lizarrondo, Eduardo Upna; Morató Osés, Daniel Upna; Aracil Rico, Javier Upna; Gómez, Francisco; González, Iván; López Buedo, Sergio; Moreno, Víctor; Ramos, Javier (Springer-Verlag Berlin Heidelberg, 2010)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      ETOMIC is a network traffic measurement platform with high precision GPS-synchronized monitoring nodes. The infrastructure is publicly available to the network research community, supporting advanced experimental ...
    • The European Traffic Observatory Measurement Infraestructure (ETOMIC) 

      Morató Osés, Daniel Upna; Magaña Lizarrondo, Eduardo Upna; Izal Azcárate, Mikel Upna; Aracil Rico, Javier Upna; Naranjo Abad, Francisco José Upna; Astiz Saldaña, Francisco Javier Upna; Alonso Camaró, Ulisses Upna; Csabai, István; Hága, Péter; Simon, Gábor; Stéger, József; Vattay, Gábor (IEEE, 2004)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The European Traffic Observatory is a European Union VI Framework Program sponsored effort, within the Integrated Project EVERGROW, that aims at providing an paneuropean traffic measurement infrastructure with high-precision, ...
    • The European Traffic Observatory Measurement Infraestructure (ETOMIC): a testbed for universal active and passive measurements 

      Magaña Lizarrondo, Eduardo Upna; Morató Osés, Daniel Upna; Izal Azcárate, Mikel Upna; Aracil Rico, Javier Upna; Astiz Saldaña, Francisco Javier Upna; Alonso Camaró, Ulisses Upna; Csabai, István; Hága, Péter; Simon, Gábor; Stéger, József; Vattay, Gábor (IEEE, 2005)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The European Traffic Observatory is a European Union VI Framework Program sponsored effort, within the Integrated Project EVERGROW, that aims at providing a paneuropean traffic measurement infrastructure with highprecisi ...
    • Evaluación de los sistemas inalámbricos 802.11b en entornos de alta movilidad para su implantación en una red de Infostations 

      Cayón Alcalde, Juan Ramón Upna; Magaña Lizarrondo, Eduardo Upna (2005)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Nowadays, users demand higher bandwidth Internet access with the ability to connect anywhere (or, at least, many-where) at anytime, with no restrictions imposed by mobility or the kind of information (voice or data) to ...
    • Evaluation of preemption probabilities in OBS networks with burst segmentation 

      Magaña Lizarrondo, Eduardo Upna; Morató Osés, Daniel Upna; Izal Azcárate, Mikel Upna; Aracil Rico, Javier Upna (IEEE, 2005)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Preemption techniques have been recently proposed for service differentiation in Optical Burst Switching (OBS) networks. According to [1], an incoming burst with the same priority that the burst in service will preempt ...
    • Garantía de calidad de servicio basada en la predicción del ancho de banda 

      Villadangos Alonso, Jesús Upna; Magaña Lizarrondo, Eduardo Upna (2001)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This paper presents the architecture and performance evaluation of a neuronal estimator to predict network load in communication networks. System benchmarks are tested with real network traffic picked up from the 155 Mbps ...