Espina Antolín, Félix

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https://academica-e.unavarra.es/handle/2454/48974

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Espina Antolín

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Félix

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Automática y Computación

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1173862

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6438

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Author: Izal Azcárate, Mikel × End date: 2010 ×

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Now showing 1 - 4 of 4
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    PublicationOpen Access
    Ingress traffic classification versus aggregation in video over OBS networks
    (2010) Izal Azcárate, Mikel; Espina Antolín, Félix; Morató Osés, Daniel; Magaña Lizarrondo, Eduardo; Automática y Computación; Automatika eta Konputazioa
    Optical Burst Switched (OBS) networks may become a backbone technology for video-on-demand providers. This work addresses the problem of dimensioning the access link of an ingress node to the optical core network in a video over OBS scenario. A video-ondemand provider using an OBS transport network will have to deliver traffic to a set of egress destinations. A large part of this traffic would be composed of video streaming traffic. However, in a real network there would be also a fraction of non video traffic related to non video services. This work studies the decision whether it is better to gather all traffic to the same destination in a joint burst assembler or separate video and general data traffic on different burs assemblers. The later may increase burst blocking probability but also allow for better tuning of OBS parameters that help improve video reception quality. Result show that this tuning of parameters is not enough to compensate the drop probability increase and thus it is better to aggregate video and general data traffic.
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    PublicationOpen Access
    Video over OBS Networks
    (2008) Espina Antolín, Félix; Morató Osés, Daniel; Izal Azcárate, Mikel; Magaña Lizarrondo, Eduardo; Automática y Computación; Automatika eta Konputazioa
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    PublicationOpen Access
    ETOMIC advanced network monitoring system for future Internet experimentation
    (Springer-Verlag Berlin Heidelberg, 2010) Csabai, István; Fekete, Attila; Hága, Péter; Hullár, Béla; Kurucz, Gábor; Laki, Sándor; Mátray, Péter; Stéger, József; Vattay, Gábor; Espina Antolín, Félix; García-Jiménez, Santiago; Izal Azcárate, Mikel; Magaña Lizarrondo, Eduardo; Morató Osés, Daniel; Aracil Rico, Javier; Gómez, Francisco; González, Iván; López Buedo, Sergio; Moreno, Víctor; Ramos, Javier; Automática y Computación; Automatika eta Konputazioa
    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 techniques by providing high precision hardware equipments and a Central Management System. Researchers can deploy their own active measurement codes to perform experiments on the public Internet. Recently, the functionalities of the original system were significantly extended and new generation measurement nodes were deployed. The system now also includes well structured data repositories to archive and share raw and evaluated data. These features make ETOMIC as one of the experimental facilities that support the design, development and validation of novel experimental techniques for the future Internet. In this paper we focus on the improved capabilities of the management system, the recent extensions of the node architecture and the accompanying database solutions.
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    PublicationOpen Access
    Arquitectura y diseño de un modelo de red OBS para simulación
    (2009) Espina Antolín, Félix; Armendáriz Silva, Javier; Izal Azcárate, Mikel; Morató Osés, Daniel; Magaña Lizarrondo, Eduardo; Automática y Computación; Automatika eta Konputazioa
    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 interesados en el estudio de esta propuesta emergente y la búsqueda de sus parámetros y entornos de funcionamiento óptimos. Sin embargo se encuentran con el gran handicap de que no existen muchas testbed para su estudio físico, ni tampoco herramientas de software óptimas para su estudio mediante simulaciones. En este trabajo se presenta un modelo de simulación de OBS para el simulador de eventos discretos OMNeT++. Este modelo permite estudiar tanto los nodos frontera, como los nodos del core, así como enlazar la red OBS con otras redes de datos soportadas en OMNeT++, principalmente IP. Además, el diseño presenta una gran modularidad lo que permite modificar fácilmente el modelo OBS para incluir futuras propuestas que se hagan sobre esta tecnología.