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Ara es mostren els items 28-47 de 75

    • Has time come to switch from duty-cycled MAC protocols to wake-up radio for wireless sensor networks? 

      Oller, Joaquim; Demirkol, Ilker Seyfettin; Casademont Serra, Jordi; Paradells Aspas, Josep; Gamm, Gerd Ulrich; Reindl, Leonhard Michael (2016-04-01)
      Article
      Accés obert
      Duty-cycled Medium Access Control (MAC) protocols certainly improve the energy efficiency of wireless networks. However, most of these protocols still suffer from severe degrees of overhearing and idle listening. These two ...

    • IEEE 802.11-enabled wake-up radio system: design and performance evaluation 

      Oller Bosch, Joaquim; García Villegas, Eduard; López Aguilera, M. Elena; Demirkol, Ilker Seyfettin; Casademont Serra, Jordi; Paradells Aspas, Josep; Gamm, Gerd Ulrich; Reindl, Leonhard Michael (Institution of Electrical Engineers, 2014-09-25)
      Article
      Accés obert
      Today, the vast majority of personal communication devices, such as laptops, smartphones, and logically wireless fidelity (Wi-Fi) access points feature IEEE 802.11 chipsets. In turn, wake-up radio (WuR) systems are used ...

    • IEEE 802.11-Enabled Wake-Up Radio: use cases and applications 

      López Aguilera, M. Elena; Demirkol, Ilker Seyfettin; García Villegas, Eduard; Paradells Aspas, Josep (Multidisciplinary Digital Publishing Institute (MDPI), 2019-12-21)
      Article
      Accés obert
      IEEE 802.11 is one of the most commonly used radio access technologies, being present in almost all handheld devices with networking capabilities. However, its energy-hungry communication modes are a challenge for the ...

    • IEEE Wireless LAN capacity in multicell environments with rate adaptation 

      García Villegas, Eduard; López Aguilera, M. Elena; Vidal Ferré, Rafael; Paradells Aspas, Josep (2007-06-16)
      Text en actes de congrés
      Accés obert
      Since the advent of the first IEEE 802.11 standard, many research efforts have been spent on evaluating different aspects of the specification. In this paper, we present a new method to predict the capacity of a multicell ...

    • Impact of LQI-based routing metrics on the performance of a one-to-one routing protocol for IEEE 802.15.4 multihop networks 

      Gómez Montenegro, Carlos; Boix Requesens, Antoni; Paradells Aspas, Josep (2010)
      Article
      Accés obert

    • Implementation and evaluation of the enhanced header compression (IPHC) for 6LoWPAN 

      Ludovici, Alessandro; Calveras Augé, Anna M.; Catalán Cid, María Luisa; Gómez Montenegro, Carlos; Paradells Aspas, Josep (2009)
      Article
      Accés restringit per política de l'editorial
      6LoWPAN defines how to carry IPv6 packets over IEEE 802.15.4 low power wireless or sensor networks. Limited bandwidth, memory and energy resources require a careful application of IPv6 in a LoWPAN. The IEEE 802.15.4 ...

    • Implementation of context-aware network architecture for smart objects based on functional composition 

      Ferrer Riera, José Luis; Sánchez Loro, Xavier; Calveras Augé, Anna M.; Paradells Aspas, Josep (2012)
      Text en actes de congrés
      Accés obert
      Lack of flexibility of current Internet architecture led researchers to come up with new paradigms for a novel Internet architecture, which would be able to reduce complexity and increase flexibility compared to current ...

    • Improving road safety and user experience by employing dynamic in-vehicle information systems 

      Galarza Osio, Miguel Ángel; Paradells Aspas, Josep (2019-04-01)
      Article
      Accés obert
      Modern vehicular infotainment systems are becoming increasingly complex and are embracing a wide range of functionalities. Interacting with some of these functionalities, while driving, may increase the driver's workload ...

    • Infrastructureless smart cities. Use cases and performance 

      Paradells Aspas, Josep; Gómez Montenegro, Carlos; Demirkol, Ilker Seyfettin; Oller Bosch, Joaquim; Catalán Cid, María Luisa (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Smart cities are a hot topic nowadays for several reasons. For city managers and citizens a smart city is a concept that should allow providing better services and/or with more efficiency. For technicians a smart city ...

    • Integración de sistemas de comunicaciones móviles inalámbricas en una plataforma GIS 

      Casademont Serra, Jordi; López Aguilera, M. Elena; Paradells Aspas, Josep (2002)
      Text en actes de congrés
      Accés obert
      El artículo presenta una nueva plataforma desarrollada para la comercialización de servicios avanzados de información geográfica para uso en dispositivos portátiles. La plataforma utiliza las redes de telecomunicación ...

    • Integration of an adaptive infotainment system in a vehicle and validation in real driving scenarios 

      Galarza Osio, Miguel Ángel; Bayona Margarit, Teresa; Paradells Aspas, Josep (2017-02-15)
      Article
      Accés obert
      More services, functionalities, and interfaces are increasingly being incorporated into current vehicles and may overload the driver capacity to perform primary driving tasks adequately. For this reason, a strategy for ...

    • Integration of wireless communications in a GIS platform 

      Casademont Serra, Jordi; López Aguilera, M. Elena; Paradells Aspas, Josep (2002-11)
      Text en actes de congrés
      Accés obert
      This paper presents a new developed platform for the Commercialisation of Advanced Services of Geographical Information, focussed in portables devices, and that makes use of the telecommunication networks available today: ...

    • La Internet del Futur: Anàlisi retrospectiva, reflexió i posicionament estratègic 

      Serra Hurtado, Arturo; Alcober Segura, Jesús Ángel; Cervelló Pastor, Cristina; Domingo Pascual, Jordi; Fernández, Gabriel; Junyent Giralt, Gabriel; Oliver, Miquel; Paradells Aspas, Josep; Sallent Ribes, Sebastián (2008-07)
      Report de recerca
      Accés obert
      Aquest treball té com a objectiu analitzar la situació actual de la Internet, per proposar noves alternatives i dibuixar un possible camí cap a la Internet del Futur. Aquesta anàlisi vol ser un punt de partida, un document ...

    • La mobilitat a Internet (I Part) 

      Vidal Ferré, Rafael; Paradells Aspas, Josep; Casademont Serra, Jordi (2006-09)
      Article
      Accés obert

    • Large-scale performance evaluation of the IETF Internet of Things protocol suite for smart city solutions 

      Isern, Javier; Betzler, August; Gómez Montenegro, Carlos; Demirkol, Ilker Seyfettin; Paradells Aspas, Josep (2015)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The Internet of Things (IoT) intends to interconnect massive amount of heterogeneous, smart devices, with the goal of interweaving the virtual world with the physical world. Smart Cities are typical IoT application domains, ...

    • Mean waiting time in the M/H2/s queue: application to mobile communications Systems 

      Barceló Arroyo, Francisco; Paradells Aspas, Josep; Aguilar Igartua, Mónica (Wissenschaft & Technik, 1997)
      Comunicació de congrés
      Accés obert
      In this paper a procedure to approximately calculate the mean waiting time in the M/H2/s queue is presented. The approximation is heuristic although based in the intuitive symmetry between the deterministic and balanced ...

    • Modeling the maximum throughput of bluetooth low energy in an error-prone link 

      Gómez Montenegro, Carlos; Demirkol, Ilker Seyfettin; Paradells Aspas, Josep (2011-11)
      Article
      Accés restringit per política de l'editorial
      We present an analytical model for the maximum throughput of Bluetooth Low Energy (BLE), considering the presence of uncorrelated bit errors and the impact of a key BLE parameter that defines the time between the start ...

    • New algorithm for distributed frequency assignments in IEEE 802.11 

      García Villegas, Eduard; Vidal Ferré, Rafael; Paradells Aspas, Josep (2007-02-28)
      Text en actes de congrés
      Accés obert
      The continuous growth of IEEE 802.11 wireless local area networks (WLAN) brings the benefit of a high speed wireless access to packet networks, such as Internet. But it also entails the successive appearance of new ...

    • Optimization of inter-domain presence traffic based on privacy rule sharing: performance and impact on the IMS 

      Beltrán Martínez, María Victoria; Paradells Aspas, Josep (2012)
      Article
      Accés restringit per política de l'editorial
      Presence information was the key enabler of the great success of instant messaging applications. This information was first limited to simple binary states such as online, offline, or busy. However, it is currently evolving ...

    • Optimizing the delivery chain in heterogenous networks 

      Sánchez Loro, Xavier; Paradells Aspas, Josep; Casademont Serra, Jordi; Ferrer, Josep Lluís (2011)
      Capítol de llibre
      Accés restringit per política de l'editorial
      Herein, we will focus on proposing a service taxonomy and classification for RBA/SOA architectures aiming to model a common framework for the description and composition of possible Atomic Ser- vices or networking ...