Now showing items 1-20 of 553

  • 1Gbps full-duplex links for ultra-dense-WDM 6.25GHz frequency slots in optical metro-access networks 

    Altabas, Jose Antonio; Izquierdo, David; Lázaro Villa, José Antonio; Lerin, Adolfo; Sotelo, Félix; Garces, Ignacio (2016-01-11)
    Article
    Open Access
    1Gbps full-duplex optical links for 6.25GHz ultra dense WDM frequency slots are demonstrated and optimized for cost-effective metro-access networks. The OLT-ONU downlinks are based on 1Gbps Nyquist-DPSK using MZM and ...
  • 3G access network dimensioning in isolated rural areas based on femtocells 

    Olmo Alòs, Jaume del; Pascual Iserte, Antonio; Vidal Manzano, José; Muñoz Medina, Olga; Agustín de Dios, Adrián (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    Based on the definition of the access network architecture and the forecast of voice and data traffic evolution, this paper derives engineering rules for radio network dimensioning of 3G femtocell-based access networks in ...
  • 5G connected vehicles supported by optical fiber access 

    Lázaro Villa, José Antonio; Coves Garrido, Massiel; Sarmiento Hernández, Samael; Altabas, Jose Antonio; Lerin, Adolfo (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    Future autonomous vehicle will require a high level of computation, communication, sensing and fast response actuation. Communication among vehicles, and vehicles to infrastructure, accessing to remote systems and services ...
  • 5G framework for automated network adaptation in mission critical services 

    Jimeno, Elisa; Pérez Romero, Jordi; Vilà Muñoz, Irene; Blanco Jauregi, Begoña; Sanchoyerto, Aitor; Fernández, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Open Access
    Mission Critical Services (MCS) are gaining interest among network operators to offer alternative communications than conventional trunked radio systems. They promise a simplified management of cloud and radio resources ...
  • 5G transport network blueprint and dimensioning for a dense urban scenario 

    Seyfettin Demirkol, Ilker; Camps Mur, Daniel; Bartelt, Jens; Zou, Jim (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    In this paper, we provide a quantitative evaluation of the deployment aspects and dimensioning of the 5G transport architecture in a representative European city. In particular, we select an example dense urban city scenario ...
  • 5G transport network requirements for the next generation fronthaul interface 

    Bartelt, Jens; Vucic, Nikola; Camps Mur, Daniel; García Villegas, Eduard; Seyfettin Demirkol, Ilker; Fehske, Albrecht; Grieger, Michael; Tzanakaki, Anna; Gutiérrez Terán, Jesús; Grass, Eckhard; Lyberopoulos, George; Fettweis, Gerhard (2017-05-15)
    Article
    Open Access
    To meet the requirements of 5G mobile networks, several radio access technologies, such as millimeter wave communications and massive MIMO, are being proposed. In addition, cloud radio access network (C-RAN) architectures ...
  • 5G-XHaul: a converged optical and wireless solution for 5G transport networks 

    Gutiérrez Terán, Jesús; Maletic, Nebojsa; Camps Mur, Daniel; García Villegas, Eduard; Berberana, Ignacio; Anastasopoulos, Markos; Tzanakaki, Anna; Kalokidou, Vaia; Flegkas, Paris; Syrivelis, Dimitris; Korakis, Thanasis; Legg, Peter; Markovic, Dusan; Limperopoulos, George; Bartelt, Jens; Chaudhary, Jay Kant; Grieger, Michael; Vucic, Nikola; Zou, Jim; Grass, Eckhard (Wiley-Blackwell, 2016-07-08)
    Article
    Open Access
    The common European Information and Communications Technology sector vision for 5G is that it should leverage on the strengths of both optical and wireless technologies. In the 5G context, a wide spectra of radio access ...
  • A Beacon-assisted direction-aware scanning scheme for 802.11-based discovery in Fog-to-Cloud systems 

    Rejiba, Zeineb; Masip Bruin, Xavier; Marín Tordera, Eva (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    In order to fully leverage idle computational resources in a fog computing scenario, a suitable discovery mechanism is needed. Within this context, F2C-Aware has been proposed in a previous work as a discovery solution ...
  • Acceso a aplicaciones desde dispositivos móviles mediante servicios Web en función del posicionamiento geográfico 

    Cuadrado Sánchez, Rubén; López Nuevo, David Andrés (Universitat Politècnica de Catalunya, 2008-06-24)
    Master thesis (pre-Bologna period)
    Open Access
    La idea principal de este proyecto es ofrecer servicios a los alumnos de la universidad UPC. Los alumnos accederán a estos servicios a través de una aplicación para dispositivos móviles. La UPC está formada por diversos ...
  • Acceso a servicios de operador desde plataformas de life streaming 

    Jiménez Castelltort, Josep Lluís (Universitat Politècnica de Catalunya, 2009-05-28)
    Master thesis (pre-Bologna period)
    Open Access
    El objetivo de este proyecto es acercar dos mundos en principio separados pero que cada vez tienen más sinergias: el mundo de los operadores de telecomunicaciones y las redes sociales. Actualmente se están produciendo ...
  • Access-aware backhaul optimization in 5G 

    Rony, Rakibul Islam; López Aguilera, M. Elena; García Villegas, Eduard (Association for Computing Machinery (ACM), 2018)
    Conference report
    Open Access
    Aggressive demand of future access network services is being translated into the stringent requirement on future backhaul infrastructure. It is not possible to take the backhaul resources for granted anymore; rather, more ...
  • Achievable bandwidth estimation for stations in multi-rate IEEE 802.11 WLAN cells 

    García Villegas, Eduard; Viamonte Solé, David; Vidal Ferré, Rafael; Paradells Aspas, Josep (2007-04-16)
    Conference report
    Open Access
    This paper analyzes the effect of multi-rate transmissions in a CSMA wireless LAN environment. Observations in a real testbed showed that bandwidth resources (in Bytes/s) are shared fairly among all stations even though ...
  • A communication infrastructure to ease the development of mobile collaborative applications 

    Rodríguez-Covili, Juan Francisco; Ochoa, Sergio; Pino, José; Meseguer Pallarès, Roc; Medina Medina, Esunly; Royo Vallés, María Dolores (2011)
    Article
    Restricted access - publisher's policy
    Mobile workers doing loosely coupled activities typically perform on demand collaboration in the physical workplace. Communication services available in such work scenarios are uncertain, therefore mobile collaborative ...
  • A comparison of different optimisation search methodologies for self-optimisation in wireless cellular networks 

    Sánchez González, Juan; Sallent Roig, José Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    Self-Organising Networks (SON) concept is seen as a way to reduce costs by automating functionalities such as network optimisation usually performed manually with extensive human work time. This paper provides a general ...
  • Acte inaugural de l'acció europea COST IC1004: Cooperative Radio Communications for Green Smart Environments 

    Giró Roca, Antoni; Alsina Català, Claudi; Cardona, Narcís; Ruiz Boqué, Sílvia (2012-02-08)
    Audiovisual
    Open Access
  • Adaptive block Diagonalization and user scheduling with out of cluster interferenced 

    García Fernández, Juan José; García Armada, Ana; Rubio López, Javier; Pascual Iserte, Antonio; Font Bach, Oriol; Bartzoudis, Nikolaos (2014)
    Conference report
    Restricted access - publisher's policy
    Interference in a cellular network is one of the main impairments that needs to be overcome. Coordination among the Base Stations may enable the use of the interference to improve the transmission rate at the cost of ...
  • Adaptive S-ALOHA CDMA as an alternative way of integrating services in mobile environments 

    Sallent Roig, José Oriol; Agustí Comes, Ramon (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-05)
    Article
    Open Access
    Code-division multiple-access (CDMA) schemes appear to be very promising access techniques for coping with the requirements of third-generation mobile systems, mainly because of their flexibility. This paper proposes an ...
  • Adaptive video-streaming dissemination in realistic highway vehicular ad-hoc networks 

    Iza Paredes, Cristhian; Mezher, Ahmad Mohamad; Aguilar Igartua, Mónica (Association for Computing Machinery (ACM), 2016)
    Conference report
    Restricted access - publisher's policy
    The dissemination of video information contents migth enhance the performances of safety-related applications in vehicular ah-hoc networks (VANETs). A major problem concerns the high sensitivity of the compressed video ...
  • A distributed man-machine dispatching architecture for emergency operations based on 3GPP mission critical services 

    Viamonte Solé, David; Calveras Augé, Anna M. (Institute of Electrical and Electronics Engineers (IEEE), 2017-12-16)
    Article
    Open Access
    With the number of non-human devices expected to significantly overtake human users of LTE networks, it is no surprise that First Responders in Mission Critical operations will need to interact with an increasing number ...
  • Admission control for multi-tenant radio access networks 

    Pérez Romero, Jordi; Sallent Roig, José Oriol; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (2017)
    Conference report
    Restricted access - publisher's policy
    The sharing of Radio Access Networks is gaining momentum in small cell scenarios, due to the associated reduction in capital and operational costs. In this scenario, the split of radio resources among tenants sharing the ...