Enviaments recents

  • On the virtualization and dynamic orchestration of satellite communication services 

    Ferrús Ferré, Ramón Antonio; Koumaras, Harilaos; Sallent Roig, José Oriol; Rasheed, Tinku; Duros, Emmanuel; Riggio, R.; Kuhn, Nicolas; Gélard, Patrick; Ahmed, Toufik (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
    Accés obert
    Key features of satellite communications such as wide-scale coverage, broadcast/multicast support and high availability, together with significant amounts of new satellite capacity coming online, anticipate new opportunities ...
  • SDN and NFV for satellite infrastructures 

    Agapiou, George; Ferrús Ferré, Ramón Antonio; Koumaras, Harilaos; Sallent Roig, José Oriol; Rasheed, Tinku; Kuhn, Nicolas; Ahmed, Toufik (Institute of Electronics, Information and Communications Engineers (IEICE), 2016)
    Text en actes de congrés
    Accés obert
    The integration of SDN and NFV enablers into the satellite network could prove to be an essential means to save on physical sites, improve the time to bring new services to the market and open new ways to improve ...
  • SDN/NFV-enabled satellite communications networks: opportunities, scenarios and challenges 

    Ferrús Ferré, Ramón Antonio; Koumaras, Harilaos; Sallent Roig, José Oriol; Agapiou, George; Rasheed, Tinku; Boustie, Christelle; Gélard, Patrick; Ahmed, Toufik (Elsevier, 2016-03-01)
    Article
    Accés restringit per política de l'editorial
    In the context of next generation 5G networks, the satellite industry is clearly committed to revisit and revamp the role of satellite communications. As major drivers in the evolution of (terrestrial) fixed and mobile ...
  • Provisión de banda ancha móvil para seguridad pública y emergencias 

    Agustí Comes, Ramon; Sallent Roig, José Oriol; Ferrús Ferré, Ramón Antonio (2013-06-01)
    Article
    Accés obert
    El acceso de banda ancha móvil es fundamental para mejorar la eficiencia y efectividad de las comunicaciones de seguridad pública y emergencias. En este artículo se identifican y argumentan los tres pilares básicos sobre ...
  • Enhancing satellite & terrestrial networks integration through NFV/SDN technologies 

    Ferrús Ferré, Ramón Antonio; Sallent Roig, José Oriol; Rasheed, Tinku; Morelli, Arianna; Koumaras, Harilaos; Agapiou, George; Boustie, Christelle; Gélard, Patrick; Mestari, Rachid; Makis, Haritos; Masson, Thierry (2015-07-01)
    Article
    Accés obert
    NFV and SDN technologies can become key facilitators for the combination of terrestrial and satellite networks. Enabling NFV into the SatCom domain will provide operators with appropriate tools and interfaces in order to ...
  • Alternativas de despliegue y asignación de espectro para las redes radio de emergencia de banda ancha 

    Cerrato, Javier Alonso; Ferrús Ferré, Ramón Antonio; Sallent Roig, José Oriol (2015-07-01)
    Article
    Accés obert
    La definición e implementación de una solución de banda ancha móvil que satisfaga las necesidades operativas de los cuerpos de seguridad pública y de emergencias (PPDR – Public Protection and Disaster Relief) es esencial ...
  • Frequency planning optimisation in real mobile networks 

    Ruiz Boqué, Sílvia; Colet, X; Estevez, J (Institute of Electrical and Electronics Engineers (IEEE), 1999)
    Text en actes de congrés
    Accés obert
    Due to the annual increase of cellular subscribers, there is a growing interest by the network operators, in how to deploy the network infrastructure to achieve maximum capacity. A key point is the channel or frequency ...
  • On soft/hard handoff for packet data services in cellular CDMA mobiles systems 

    Ferrús Ferré, Ramón Antonio; Díaz Romero, M. del Pilar (Institute of Electrical and Electronics Engineers (IEEE), 1999)
    Text en actes de congrés
    Accés obert
    Benefits of macrodiversity operation for packet data services in third generation mobile systems are not obvious. Retransmission procedures to enhance link performance and higher downlink bandwidth requirements could ...
  • An efficient data transmission policy in an integrated voice-data ds-cdma network 

    Sallent Roig, José Oriol; Agustí Comes, Ramon (IEEE Vehicular Technology Society, 1998)
    Text en actes de congrés
    Accés obert
    CDMA schemes appear to be promising access techniques for coping with the requirements of third-generation mobile systems, mainly because of their flexibility. This paper proposes an adaptive S-ALOHA DS-CDMA access scheme ...
  • Adaptive schemes for packet data in a ds-cdma environment 

    Sallent Roig, José Oriol; Agustí Comes, Ramon (IEEE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC., 1997)
    Text en actes de congrés
    Accés obert
    This paper presents a novel adaptive DS-CDMA slotted-ALOHA packet random access scheme for improving the throughput of the conventional DS-CDMA slotted-ALOHA system. For this purpose a mobile-assisted algorithm is envisaged ...

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