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Now showing items 1-20 of 143

    • 5G and the Internet of everyone: motivation, enablers, and research agenda 

      Maccari, Leonardo; Karaliopoulos, Merkouris; Koutsopoulos, Iordanis; Navarro Moldes, Leandro; Freitag, Fèlix; Lo Cigno, Renato (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Open Access
      As mobile broadband subscriptions grow twice as fast as the fixed ones and the Internet of Things comes forth, the 5G vision of the Internet of Everything (people, devices, and things), becomes a substantial and credible ...
    • A case for research with and on community networks 

      Braem, Bart; Blondia, Chris; Freitag, Fèlix; Navarro Moldes, Leandro; Escrich, Pau; Baig Viñas, Roger; Bonicioli, Joseph; Papathanasiou, Stavros; Vilata i Balaguer, Iván; Barz, Christoph; Rogge, Henning; Neumann, Axel; Matson, Malcolm; Tatum, Blaine; Kaplan, Aaron L. (2013-07)
      Article
      Open Access
      Community Networks are large scale, self-organized and decentralized networks, built and operated by citizens for citizens. In this paper, we make a case for research on and with community networks, while explaining the ...
    • A catallactic market for data mining services. 

      Joita, Liviu; Rana, Omer; Freitag, Fèlix; Chao, Isaac; Chacín Martínez, Pablo; Navarro Moldes, Leandro; Ardáiz Villanueva, Óscar (2007)
      Article
      Open Access
      We describe a Grid market for exchanging data mining services based on the Catallactic market mechanism proposed by von Hayek. This market mechanism allows selection between multiple instances of services based on operations ...
    • A commons-oriented framework for community networks 

      Navarro Moldes, Leandro; Freitag, Fèlix; Baig Viñas, Roger; Roca Tió, Ramon (FGV Direto Rio, 2016)
      Part of book or chapter of book
      Open Access
      This report introduces a framework for the analysis of Community Networks (CN), from a European perspective but applicable to other regions, with the aim of providing a sort of general taxonomy. The report first of all ...
    • A distributed auctioneer for resource allocation in decentralized systems 

      Khan, Muhammad Amin; Vilaça, Xavier; Rodrigues, Luís; Freitag, Fèlix (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Open Access
      In decentralized systems, nodes often need to coordinate to access shared resources in a fair manner. One approach to perform such arbitration is to rely on auction mechanisms. Although there is an extensive literature ...
    • A dynamic periodicity detector: application to speedup computation 

      Freitag, Fèlix; Corbalán González, Julita; Labarta Mancho, Jesús José (IEEE, 2001-04)
      Conference report
      Open Access
      We propose a dynamic periodicity detector (DPD) for the estimation of periodicities in data series obtained from the execution of applications. We analyze the algorithm used by the periodicity detector and its performance ...
    • A Hayekian self-organization approach to service allocation in computing systems 

      Eymann, Torsten; Reinicke, Michael; Freitag, Fèlix; Navarro Moldes, Leandro; Ardáiz Villanueva, Óscar; Artigas Vidal, Pau (Elsevier, 2005)
      Article
      Open Access
      Future ‘on-demand’ computing systems, often depicted as potentially large scale and complex Service-Oriented Architectures, will need innovative management approaches for controlling and matching services demand and supply. ...
    • A lightweight service placement approach for community network micro-clouds 

      Selimi, Mennan; Cerdà Alabern, Llorenç; Freitag, Fèlix; Veiga, Luis; Sathiaseelan, Arjuna; Crowcroft, Jon (2019-03)
      Article
      Open Access
      Community networks (CNs) have gained momentum in the last few years with the increasing number of spontaneously deployed WiFi hotspots and home networks. These networks, owned and managed by volunteers, offer various ...
    • A look at energy efficient system opportunities with community network clouds 

      Freitag, Fèlix; Sharifi, Leila; Khan, Muhammad Amin; Navarro Moldes, Leandro; Baig Viñas, Roger; Escrich, Pau; Veiga, Luis (CEUR-WS.org, 2014)
      Conference report
      Open Access
      Community networking is an emerging model of a shared communication infrastructure in which communities of citizens build and own open networks. Community networks offer successfully IP-based networking to the user. In ...
    • A LoRa-Based communication system for coordinated response in an earthquake Aftermath 

      Pueyo Centelles, Roger; Freitag, Fèlix; Meseguer Pallarès, Roc; Navarro Moldes, Leandro; Ochoa, Sergio; Santos, Rodrigo M. (MDPI, 2019)
      Conference report
      Open Access
      The response conducted by 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 ...
    • A minimalistic distance-vector routing protocol for LoRa mesh networks 

      Pueyo Centelles, Roger; Freitag, Fèlix; Meseguer Pallarès, Roc; Navarro Moldes, Leandro (2021-06-15)
      Research report
      Open Access
      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 ...
    • A minimalistic distance-vector routing protocol for LoRa mesh networks 

      Pueyo Centelles, Roger; Meseguer Pallarès, Roc; Freitag, Fèlix; Baig Viñas, Roger; Navarro Moldes, Leandro (Institute of Electrical and Electronics Engineers (IEEE), 2024-08-14)
      Article
      Open Access
      LoRa is popular 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, LoRa is used as part of ...
    • A monitoring system for distributed edge infrastructures with decentralized coordination 

      Pueyo Centelles, Roger; Selimi, Mennan; Freitag, Fèlix; Navarro Moldes, Leandro (Springer, 2019)
      Conference report
      Open Access
      We present the case of monitoring a decentralized and crowdsourced network infrastructure, that needs to be monitored over geographically distributed devices at the network edge. It is a characteristic of the target ...
    • A new approach to role and position detection in networks 

      Vega d'Aurelio, Davide; Magnani, Matteo; Montesi, Danilo; Meseguer Pallarès, Roc; Freitag, Fèlix (2016-06)
      Article
      Open Access
      We rethink and extend the concepts of position and role in a network, basing them on various well-known measures that were not previously associated with these concepts, such as geodesic distance and modularity. The ...
    • A simheuristic algorithm for service placement in community networks 

      Panadero Martínez, Javier; Calvet Liñán, Laura; Bayliss, Christopher; Marques Puig, Joan Manuel; Selimi, Mennan; Freitag, Fèlix (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Conference report
      Open Access
      The growing demand for network connectivity has boosted the number of community networks (CNs). CNs are decentralized and self-organized communication networks owned and managed at the edge by volunteers. Due to the ...
    • A summary of virtualization techniques 

      Rodríguez Haro, Fernando; Freitag, Fèlix; Navarro Moldes, Leandro; Hernández Sánchez, Efraín; Farías Mendoza, Nicandro; Guerrero Ibáñez, Juan Antonio; González Potes, Apolinar (Elsevier, 2012)
      Article
      Restricted access - publisher's policy
      Nowadays, virtualization is a technology that is applied for sharing the capabilities of physical computers by splitting the resources among OSs. The concept of Virtual Machines (VMs) started back in 1964 with a IBM project ...
    • A trace-scaling agent for parallel application tracing 

      Freitag, Fèlix; Caubet Serrabou, Jordi; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2002)
      Conference report
      Open Access
      Tracing and performance analysis tools are an important component in the development of high performance applications. Tracing parallel programs with current tracing tools, however, easily leads to large trace files with ...
    • A trace-scaling agent for parallel application tracing. 

      Freitag, Fèlix; Caubet Serrabou, Jordi; Labarta Mancho, Jesús José (IEEE, 2002)
      Conference report
      Open Access
      Tracing and performance analysis tools are an important component in the development of high performance applications. Tracing parallel programs with current tracing tools, however, easily leads to large trace files with ...
    • A two-stage multi-criteria optimization method for service placement in decentralized edge micro-clouds 

      Panadero, Javier; Selimi, Mennan; Calvet Liñán, Laura; Marques Puig, Joan Manuel; Freitag, Fèlix (Elsevier, 2021-08)
      Article
      Open Access
      Community networks are becoming increasingly popular due to the growing demand for network connectivity in both rural and urban areas. Community networks are owned and managed at the edge by volunteers. Their irregular ...
    • Advances in wireless community networks with the community-lab testbed 

      Navarro Moldes, Leandro; Baig Viñas, Roger; Barz, Christoph; Bonicioli, Joseph; Braem, Bart; Freitag, Fèlix; Vilalta i Balaguer, Ivan (2016-07)
      Article
      Open Access
      Beyond traditional telecom providers, citizens and organizations pool their own resources and coordinate in order to build local network infrastructures to address the digital divide in many parts of the world. These ...