Reports de recerca

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  • Reliability analysis in a wireless ISP 

    Cerdà Alabern, Llorenç; Gemmi, Gabriele; Maccari, Leonardo (2023-03-14)
    Report de investigación
    Acceso abierto
    This brief report investigates different quality parameters to assess the reliability in Wireless Internet Service Providers, WISPs. In our analysis we use a Markov chain approach. We investigate the time to failure, failure ...

  • Demonstration of a library prototype to build LoRa mesh networks for the IoT 

    Miquel Solé, Joan; Miralles Nogués, Sergi; Pueyo Centelles, Roger; Freitag, Fèlix (2022-02)
    Report de investigación
    Acceso abierto
    LoRa has become popular in the Internet of Things (IoT) domain as a Low Power, Wide Area Network (LPWAN) radio technology providing low-power and long-range communi- cation. In a typical IoT application, the LoRaWAN ...

  • A minimalistic distance-vector routing protocol for LoRa mesh networks 

    Pueyo Centelles, Roger; Freitag, Fèlix; Meseguer Pallarès, Roc; Navarro Moldes, Leandro (2021-06-15)
    Report de investigación
    Acceso abierto
    LoRa has gained traction in the Internet of Things (IoT) domain as a Low Power, Wide Area Network(LPWAN) radio technology, providing low-power and long-range communication in the sub-GHz band. Most often it is used as part ...

  • Interoperable Digital Proximity Tracing protocol (IDPT) 

    García Vidal, Jorge (2020-05-19)
    Report de investigación
    Acceso abierto
    This document introduces the Interoperable Digital Proximity Tracing (IDPT) protocol, that can be run by applications that also run the DP3T digital proximity tracking protocol to enable interoperability with the ROBERT ...

  • LoRaMoto: a LoRa-based communication system for coordinated response in an earthquake aftermath (excerpt) 

    Pueyo Centelles, Roger; Freitag, Fèlix; Meseguer Pallarès, Roc; Navarro Moldes, Leandro (2019-07-26)
    Report de investigación
    Acceso abierto
    Response of emergency units after natural disasters, such as earthquakes, has to be coordinated, fast and efficient in order to rescue and care for the victims, keeping all the population –and the units themselves– safe ...

  • Traffic burstiness influence on ATM switching behaviour 

    Solé Pareta, Josep; Domingo Pascual, Jordi; García Vidal, Jorge (1989)
    Report de investigación
    Acceso abierto
    Traffic studies is an important subject to evaluate the performance of the switching elements in an ATM environment. The main reason is that ATM cell stream have a variable birate where the maximum peak birate can be several ...

  • Bursty cell stream characterization 

    Solé Pareta, Josep; Domingo Pascual, Jordi; García Vidal, Jorge (1989-01)
    Report de investigación
    Acceso abierto
    Traffic cell stream generated by a single source (or a single connection traffic cell stream) may be characterized by its mean traffic intensity (or normalized mean cell rate) Ai, but also by its burstiness. "Burstiness ...

  • Traffic burstiness influence on ATM switching behavior 

    Solé Pareta, Josep; Domingo Pascual, Jordi; García Vidal, Jorge (1989-01)
    Report de investigación
    Acceso abierto
    Traffic studies is an important subject to evaluate the performance of the switching elements in an ATM environment. The main reason is that ATM cell streams have varible bitrate where the maximun peak bitrate can be several ...

  • Analysis of guifi.net's topology: extension of results 

    Cerdà Alabern, Llorenç (2012-05-04)
    Report de investigación
    Acceso abierto
    This report extends the analysis carried out in a previous work [1] about the topology of guifi.net wireless community network. The main objective is validating the topology generator proposed in [1] for guifi.net like ...

  • IEEE 802.16e en Intelligent Transport Systems (ITS) 

    Suñol Capella, Josep; García Vidal, Jorge (2007-05-24)
    Report de investigación
    Acceso abierto
    Posibilidades que ofrecen el IEEE estándar 802.16e, con respecto a los servicios que se pueden ofrecer a la industria del automóvil en sistemas inteligentes del transporte.