Ara es mostren els items 1-20 de 514

  • 5G Infrastructures supporting end-user and operational services: the 5G-XHaul architectural perspective 

    Tzanakaki, Anna; Simeonidou, Dimitra; Berberana, Ignacio; Syrivelis, Dimitris; Camps Mur, Daniel; Seyfettin Demirkol, Ilker; Gutiérrez, Jesús; Wei, Qing; Fehske, Albrecht; Eiselt, Michael; Bartelt, Jens; Lyberopoulos, George; Grass, Eckhard; Anastasopoulos, Markos; Korakis, Thanasis; Flegkas, Paris; Pateromichelakis, Emmanouil; Grieger, Michael; Theodoropoulou, Eleni (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
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    We propose an optical-wireless 5G infrastructure offering converged fronthauling/backhauling functions to support both operational and end-user cloud services. A layered architectural structure required to efficiently ...
  • A centrality-based topology control protocol for wireless mesh networks 

    Vázquez Rodas, Andrés; Cruz Llopis, Luis Javier de la (Elsevier, 2015-01-01)
    Article
    Accés obert
    Nodes in wireless multi-hop networks establish links with their neighbors, which are used for data transmission. In general, in this kind of networks every node has the possibility of acting as a router, forwarding the ...
  • A context-aware service architecture for the integration of body sensor networks and social networks through IP multimedia subsystem 

    Domingo Aladrén, Mari Carmen (2011-01-01)
    Article
    Accés restringit per política de l'editorial
    In this article a new context-aware architecture is proposed for the integration of body sensor networks and social networks through the IP Multimedia Subsystem. Its motivating application scenarios are described. The ...
  • A cross-layer scheduling algorithm for DQCA-based WLAN systems with heterogeneous voice-data traffic 

    Kartsakli, Elli; Cateura, Alex; Verikoukis, Christos; Alonso Zárate, Luis Gonzaga (ieee, 2005-09-30)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    This paper proposes a cross-layer priority-based scheduling algorithm for WLAN systems using the DQCA MAC protocol where heterogeneous voice-data traffic is present. In this algorithm voice users have always the highest ...
  • A distributed algorithm for topology discovery in software-defined networks 

    Ochoa Aday, Leonardo; Cervelló Pastor, Cristina; Fernández Fernández, Adriana (Springer, 2016)
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    To ensure a proficient topology discovery service in Software-Defined Networks (SDN), we propose a simple agents-based mechanism to improve the efficiency of the topology discovery process. In this work, an algorithm for ...
  • A dual-mode Ultra-Wideband wireless platform for remote patient monitoring systems 

    Bisbe Novoa, Sergi; Reyes Navarro, Carlos Alberto (Universitat Politècnica de Catalunya, 2012-07-11)
    Projecte Final de Màster Oficial
    Accés obert
    The combination of two factors demands the need to find a solution that guarantees the well-being of the people suffering from chronic diseases. On the one hand, the increase of the life expectancy leads to an older world's ...
  • A fuzzy-based cluster-head selection system for WSNs: a comparison study for static and mobile sensors 

    Barolli, Leonard; Wang, Qi; Kulla, E.; Xhafa Xhafa, Fatos; Kamo, B.; Takizawa, Makoto (IEEE Press. Institute of Electrical and Electronics Engineers, 2012)
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  • A GA-based simulation system for WMNs: comparison analysis for different number of flows, client distributions, DCF and EDCA functions 

    Barolli, Admir; Oda, Tetsuya; Matsuo, Keita; Cuka, Miralda; Barolli, Leonard; Xhafa Xhafa, Fatos (Springer, 2017-02-04)
    Article
    Accés restringit per política de l'editorial
    In this paper, we compare the performance of Distributed Coordination Function (DCF) and Enhanced Distributed Channel Access (EDCA) for normal and uniform distributions of mesh clients considering two Wireless Mesh Network ...
  • A GA-based simulation system for WMNs: performance analysis for different WMN architectures considering transmission rate and OLRS protocol 

    Matsuo, Keita; Oda, Tetsuya; Barolli, Admir; Ikeda, Makoto; Barolli, Leonard; Xhafa Xhafa, Fatos (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
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    In this paper, we evaluate the performance of two WMN architectures considering throughput, delay, jitter and fairness index metrics. For simulations, we used ns-3. We compare the performance for two architectures considering ...
  • A genetic algorithm-based system for Wireless Mesh Networks: analysis of system data considering different routing protocols and architectures 

    Oda, Tetsuya; Elmazi, Donald; Barolli, Admir; Sakamoto, Shinji; Barolli, Leonard; Xhafa Xhafa, Fatos (Springer, 2016-07-01)
    Article
    Accés obert
    Wireless mesh networks (WMNs) are attracting a lot of attention from wireless network researchers. Node placement problems have been investigated for a long time in the optimization field due to numerous applications in ...
  • A Kalman-filter approach for dynamic OD estimation in corridors based on bluetooth and Wi-Fi data collection 

    Barceló Bugeda, Jaime; Montero Mercadé, Lídia; Marqués, Laura; Carmona, Carlos (2010)
    Text en actes de congrés
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    From the point of view of the information supplied by an ATIS to the motorists entering a freeway of one of the most relevant is the Forecasted Travel Time, that is the expected travel time that they will experience when ...
  • A long term evolution link level simulator 

    Serra Pagès, Albert (Universitat Politècnica de Catalunya, 2009-02)
    Projecte Final de Màster Oficial
    Accés obert
  • A new approach to exploit channel power imbalance in distributed antenna systems with fiber fronthaul 

    Dowhuszko, Alexis; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Text en actes de congrés
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    Cloud Modulation (CM) is a novel transmission method that mitigates the non-linear impairments introduced by the Radio-over-Fiber (RoF) links of a distributed antenna system. In CM, constant-envelope phase-modulated radio ...
  • A New CAC Policy Based on Traffic Characterization in Cellular Networks 

    Vassileva Vesselinova, Natalia; Barceló Arroyo, Francisco (Springer, 2008-05)
    Text en actes de congrés
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    The Call Admission Control (CAC) method presented in this paper is based on the statistical properties of the network’s traffic variables. It probabilistically estimates the time until the release of a seized channel: the ...
  • A novel autonomous RAT selection algorithm for non real time services 

    Pérez Romero, Jordi; Sallent Roig, José Oriol (2009)
    Text en actes de congrés
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    This paper proposes a new solution for autonomous decision-making in the RAT selection process in multi-service multi-access network scenarios. It is based on exploiting the time dimension in the RAT selection, so that, ...
  • A novel near-optimum medium acces control protocol for a distributed cooperative ARQ scheme in wireless networks 

    Alonso Zárate, Jesús; Verikoukis, Christos; Kartsakli, Elli; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2008-09-30)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    The distributed queuing MAC protocol for cooperative networks (DQCOOP) is presented in this paper as an innovative MAC protocol designed to coordinate the relay retransmissions in a cooperative automatic retransmission ...
  • A Phased Model for Network Selection based on Context 

    Estevez Vanrell, Jose Manuel (Universitat Politècnica de Catalunya, 2009-04-01)
    Projecte/Treball Final de Carrera
    Accés obert
    L’accés a Internet s’ha convertit avui en dia en una necessitat degut a la facilitat i comoditat que ens produeix poder enviar un mail, fer una transferència bancària, consultar informació de tot tipus des de qualsevol ...
  • A price based load balancing scheme for multi-operator wireless access networks 

    Choque, Johnny; Agüero, Ramon; Serrat Fernández, Juan; Muñoz, Luis (Springer, 2012)
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    We study a load balancing strategy, based on the price offered by the base stations to the end-users who are willing to establish a connection. The proposed scheme is compared with a pure load balancing procedure, in a ...
  • A Programmable UWB-IR Wireless Sensor Node Prototype, Using the Intel WISP Platform 

    Boixadera Planas, Ramon (Universitat Politècnica de Catalunya, 2010-12-15)
    Projecte/Treball Final de Carrera
    Accés obert
    English: Remote sensing and measuring is becoming more important with accelerating advances in technology. The ability to process large amounts of data using the internet and advanced digital signal processing techniques ...
  • A protocol architecture for energy efficient and pervasive eHealth systems 

    Tennina, Stefano; Di Renzo, Marco; Kartsakli, Elli; Graziosi, Fabio; Lalos, Aris S.; Antonopoulos, Angelos; Mekikis, Prodromos Vasileios; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Text en actes de congrés
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    The design of new and more pervasive healthcare systems has been fostered by the increased expectancy of life in the coming years. In this field, distributed and networked wireless embedded systems, such as Wireless Sensor ...