Ara es mostren els items 1-20 de 33

  • A cooperative ARQ for delay-tolerant vehicular networks 

    Morillo Pozo, Julián David; Trullols Cruces, Óscar; Barceló Ordinas, José María; García Vidal, Jorge (2008-07-25)
    Text en actes de congrés
    Accés obert
    This paper proposes a Cooperative ARQ protocol to be used in delay-tolerant vehicular networks. The proposed scheme has been implemented and evaluated through an experimental testbed, showing that packet losses in ...
  • A cooperative vehicular network framework 

    Trullols Cruces, Óscar; Morillo Pozo, Julián David; Barceló Ordinas, José María; García Vidal, Jorge (2009)
    Comunicació de congrés
    Accés obert
    Vehicular Ad Hoc Networks are networks characterized by intermittent connectivity and rapid changes in their topology. This paper addresses car-to-road communications in which vehicles use Access Points (AP) in a Delay ...
  • A hybrid cooperative design for energy-efficient surveillance in wireless multimedia sensor networks 

    Alaei, Mohammad; Barceló Ordinas, José María (VDE Conference Publications, 2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In Wireless Multimedia Sensor Networks (WMSNs) the lifetime of battery-operated visual nodes is limited by their energy consumption, which is proportional to the energy required for sensing, processing, and transmitting ...
  • A Max coverage formulation for information dissemination in vehicular networks 

    Trullols Cruces, Óscar; Barceló Ordinas, José María; Fiore, Marco; Casetti, Claudio; Chiasserini, Carla-Fabiana (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
    Comunicació de congrés
    Accés obert
    We consider that a given number of Dissemination Points (DPs) have to be deployed for disseminating information to vehicles travelling in an urban area. We formulate our problem as a Maximum Coverage Problem (MCP) so as ...
  • A method for clustering and cooperation in wireless multimedia sensor networks 

    Alaei, Mohammad; Barceló Ordinas, José María (2010-04)
    Article
    Accés obert
    Wireless multimedia sensor nodes sense areas that are uncorrelated to the areas covered by radio neighbouring sensors. Thus, node clustering for coordinating multimedia sensing and processing cannot be based on classical ...
  • Analytical models for the multiplexing of worst case traffic sources and their application to ATM traffic control. 

    Barceló Ordinas, José María (Universitat Politècnica de Catalunya, 1998-04-23)
    Tesi
    Accés obert
  • Applying cooperation for delay tolerant vehicular networks 

    Morillo Pozo, Julián David; Barceló Ordinas, José María; Trullols Cruces, Óscar; García Vidal, Jorge (2008-01-18)
    Comunicació de congrés
    Accés obert
    This paper proposes a Cooperative ARQ protocol to be used in delay-tolerant vehicular networks. The proposed scheme has been implemented and evaluated through an experimental testbed, showing that packet losses in ...
  • Brief announcement: Game theoretical approach for energy-delay balancing in distributed duty-cycled MAC protocols of wireless networks 

    Doudou, Messaoud; Barceló Ordinas, José María; Djenouri, Djamel; García Vidal, Jorge; Badache, Nadjib (Association for Computing Machinery (ACM), 2014)
    Text en actes de congrés
    Accés obert
    Optimizing energy consumption and end-to-end (e2e) packet delay in energy constrained distributed wireless networks is a conflicting multi-objective optimization problem. This paper investigates this trade-off from a ...
  • Calibrating low-cost air quality sensors using multiple arrays of sensors 

    Barceló Ordinas, José María; García Vidal, Jorge; Doudou, Messaoud; Rodrigo Muñoz, Santiago; Cerezo Llavero, Albert (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Text en actes de congrés
    Accés obert
    The remarkable advances in sensing and communication technologies have introduced increasingly low-cost, smart and portable sensors that can be embedded everywhere and play an important role in environmental sensing ...
  • Cooperative download in urban vehicular networks 

    Fiore, Marco; Barceló Ordinas, José María (IEEE Computer Society Publications, 2009-10-12)
    Text en actes de congrés
    Accés obert
    We target urban scenarios where vehicular users can download large files from road-side Access Points (APs), and define a framework to exploit opportunistic encounters between mobile nodes to increase their transfer rate. ...
  • Cooperative download in vehicular environments 

    Trullols Cruces, Óscar; Fiore, Marco; Barceló Ordinas, José María (2011-05-12)
    Article
    Accés restringit per política de l'editorial
    We consider a complex (i.e., nonlinear) road scenario where users aboard vehicles equipped with communication interfaces are interested in downloading large files from road-side Access Points (APs). We investigate the ...
  • Cost effective node deployment strategy for energy-balanced and delay-efficient data collection in wireless sensor networks 

    Doudou, Messaoud; Djenouri, Djamel; Barceló Ordinas, José María; Badache, Nadjib (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Text en actes de congrés
    Accés obert
    The real-world node deployment aspect is investigated, while considering cost minimization for resolving the energy hole around the sink, which represents a serious problem in typical sensor networks with uniform distribution. ...
  • Delay-efficient MAC protocol with traffic differentiation and run-time parameter adaptation for energy-constrained wireless sensor networks 

    Doudou, Messaoud; Djenouri, Diamel; Barceló Ordinas, José María; Badache, Nadjib (2016-02-01)
    Article
    Accés obert
    This paper presents an asynchronous cascading wake-up MAC protocol for heterogeneous traffic gathering in low-power wireless sensor networks. It jointly considers energy/delay optimization and switches between two modes, ...
  • Duo-MAC: Energy and time constrained data delivery MAC protocol in wireless sensor networks 

    Doudou, Messaoud; Alaei, Mohammad; Djenouri, Djamel; Barceló Ordinas, José María; Badache, Nadjib (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    We present Duo-MAC, an asynchronous cascading wake-up scheduled MAC protocol for heterogeneous traffic forwarding in low-power wireless networks. Duo-MAC deals with energy-delay minimization problem and copes with transmission ...
  • Energy efficiency of MAC protocols in low data rate wireless multimedia sensor networks: A comparative study 

    Alskaif, Tarek; Bellalta Jimenez, Boris; Guerrero Zapata, Manel; Barceló Ordinas, José María (Elsevier, 2017-03-01)
    Article
    Accés obert
    Some new application scenarios for Wireless Sensor Networks (WSNs) such as urban resilience, smart house/building, smart agriculture and animal farming, among others, can be enhanced by adding multimedia sensors able to ...
  • Evaluation of a cooperative ARQ protocol for delay-tolerant vehicular networks 

    Morillo Pozo, Julián David; Trullols Cruces, Óscar; Barceló Ordinas, José María; García Vidal, Jorge (2008-10-16)
    Capítol de llibre
    Accés obert
    This paper evaluates a Cooperative ARQ protocol to be used in delay-tolerant vehicular networks. The scenario consists in cars downloading information from Access Points along a road. The key difference between proposed ...
  • Exact decoding probability under random linear network coding 

    Trullols Cruces, Óscar; Barceló Ordinas, José María; Fiore, Marco (2011-01)
    Article
    Accés obert
    In this letter, we compute the exact probability that a receiver obtains N linearly independent packets among K ≥ N received packets, when the sender/s use/s random linear network coding over a Galois Field of size q. Such ...
  • Game theory framework for MAC parameter optimization in energy-delay constrained sensor networks 

    Doudou, Messaoud; Barceló Ordinas, José María; Djenouri, Djamel; García Vidal, Jorge; Bouabdallah, Abdelmadjid; Badache, Nadjib (2016-05)
    Article
    Accés obert
    Optimizing energy consumption and end-to-end (e2e) packet delay in energy-constrained, delay-sensitive wireless sensor networks is a conflicting multiobjective optimization problem. We investigate the problem from a game ...
  • Generation and analysis of a large-scale urban vehicular mobility dataset 

    Uppoor, Sandesh; Trullols Cruces, Óscar; Fiore, Marco; Barceló Ordinas, José María (2014-05)
    Article
    Accés restringit per política de l'editorial
    The surge in vehicular network research has led, over the last few years, to the proposal of countless network solutions specifically designed for vehicular environments. A vast majority of such solutions has been evaluated ...
  • Impact of the infrastructure in mobile opportunistic networks 

    Trullols Cruces, Óscar; Morillo Pozo, Julián David; Barceló Ordinas, José María (2011)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Epidemic modeling has been used to analyze many disciplines such as biology, ecology and medicine. In the last years, it also has been applied to networking paradigms such as social networks, virus spreading in Internet ...