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Ara es mostren els items 195-214 de 222

    • Self-dimensioning and planning of small cell capacity in multitenant 5G networks 

      Muñoz Luengo, Pablo; Sallent Roig, Oriol; Pérez Romero, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2018-01-15)
      Article
      Accés obert
      An important concept in the fifth generation of mobile networks is multitenancy, which allows diverse operators sharing the same wireless infrastructure. To support this feature in conjunction with the challenging performance ...

    • Self-optimized admission control for multi-tenant radio access networks 

      Pérez Romero, Jordi; Sallent Roig, Oriol; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Text en actes de congrés
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      Multi-tenant Radio Access Networks (RANs) are envisaged to play a key role in highly dense scenarios for fulfilling the challenging capacity requirements of future enhanced Mobile BroadBand services while reducing the ...

    • Self-X functions in cloud enabled small cell networks 

      Pérez Romero, Jordi; Costa, Cristina; Abubakar, Babangida; Panousis, Emmanouilis; Mouratidis, Haris; Nasr, Karim; Vahid, Seiamak; Moessner, Klaus (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Text en actes de congrés
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      The combination of Small Cells as a Service (SCaaS) together with Network Function Virtualization (NFV) and Mobile Edge Computing (MEC) technologies, as considered by the SESAME project, provides a promising framework ...

    • Self-X in SESAME 

      Pérez Romero, Jordi; Sallent Roig, Oriol; Ruiz, Cristina; Betzler, August; Sayyad Khodashenas, Pouria; Vahid, Seiamak; Nasr, Karim M.; Abubakar, Babangida; Whitehead, Alan; Goratti, Leonardo (2016)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This paper addresses the use of Self-X functions to support Small Cell as a Service (SCaaS) provisioning in multi-tenant scenarios, as one of the main components of the SESAME project. After presenting the scenarios, ...

    • Service provisioning and pricing methods in a multi-tenant cloud enabled RAN 

      Khodashenas, Pouria S.; Ruiz, Cristina; Ferrer Riera, Jordi; Fajardo, Jose Oscar; Taboada, Ianire; Blanco, Begoña; Liberal, Fidel; García Lloreda, J.; Pérez Romero, Jordi; Sallent Roig, Oriol; Neokosmidis, Ioannis; Rokkas, Teodoros (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The Cloud Enabled Small Cell (CESC) concept proposed in EU funded project SESAME has emerged as a promising solution to form a multi-tenant, multi-service architecture at the network edge according to 5G needs. It allows ...

    • Small cells deployment in TV white spaces with neighborhood cooperation 

      Bogucka, Hanna; Pérez Romero, Jordi (2014)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      In this paper, we consider allocation of spectrum resources in the so-called TV White Spaces (TVWS) to small cells for their realistic deployment based on first-come, first-served principle. Three allocation rules are ...

    • Software tool for optimising indoor/outdoor coverage in a construction site 

      Ruiz Boqué, Sílvia; Samper, Y; Pérez Romero, Jordi; Agustí Comes, Ramon; Olmos Bonafé, Juan José (Institution of Electrical Engineers, 1998-10)
      Article
      Accés obert
      A system architecture, an empirical propagation model, and a software combined with a CAD tool, have been designed to offer mobile communication services to construction sites. Results have been validated by measurements.

    • Space/time traffic fluctuations in a cellular network: measurements’ analysis and potential applications 

      Sánchez González, Juan; Sallent Roig, Oriol; Pérez Romero, Jordi (Springer, 2018)
      Text en actes de congrés
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      The characterization of the space/time traffic profiles in a cellular network can be of high interest for automating the operation of future networks, since the knowledge extracted from the traffic fluctuations in a cell ...

    • Special issue on radio access network architectures and resource management for 5G 

      Pérez Romero, Jordi; Lagrange, Xavier; Nasreddine, Jad; Marquez-Barja, Johann (Elsevier, 2016-03)
      Article
      Accés obert

    • Spectrum occupancy in big cities - comparative study: measurement campaigns in Barcelona and Poznan 

      Kliks, Adrian; Kryszkiewicz, Pawel; Pérez Romero, Jordi; Umbert Juliana, Anna; Casadevall Palacio, Fernando José (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Text en actes de congrés
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      In this paper a comparative study of two measurement campaigns carried out in Barcelona, Spain, and Pozna, Poland, to identify spectrum occupancy in different bands, is presented. In both cases the measurement setup ...

    • Spectrum sensing and neighbourhood mapping roadmap. Document number D3.1 

      Dejonghe, Antoine; Pollin, Sofie; Van Wesemael, Peter; Grimoud, Sebastien; Sayrac, Berna; van de Beek, Jaap; Guolin, Sun; Subramani, Siva; Wang, Yue; Sooriyabandara, Mahesh; Gavrilovska, Liljana; Atanasovski, Vladimir; Mähönen, Petri; Riihijärvi, Janne; Nasreddine, Jad; Polydoros, Andreas; Zalonis, Andreas; Miliou, Natalia; Dagres, Ioannis; Pérez Romero, Jordi (2010-11)
      Report de recerca
      Accés restringit per acord de confidencialitat

    • Spectrum sharing in cognitive radio networks with imperfect sensing: a discrete-time Markov model 

      Gelabert Doran, Xavier Bernardi; Sallent Roig, Oriol; Agustí Comes, Ramon; Pérez Romero, Jordi (2010-10)
      Article
      Accés restringit per política de l'editorial
      An efficient and utmost utilization of currently scarce and underutilized radio spectrum resources has stimulated the introduction of what has been coined Cognitive Radio (CR) access methodologies and implementations. While ...

    • Strengthening radio environment maps with primary-user statistical patterns for enhancing cognitive radio operation 

      Bouali, Faouzi; Sallent Roig, Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (2011)
      Text en actes de congrés
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      In order to increase spectrum utilization efficiency, CRs (Cognitive Radios) have been introduced to reuse white spaces left unused by legacy services under the strict constraint of not interfering them. In order to fulfill ...

    • Supporting mission critical services through radio access network slicing 

      Pérez Romero, Jordi; Vilà Muñoz, Irene; Sallent Roig, Oriol; Blanco, Begoña; Sanchoyerto, Aitor; Solozabal, Ruben; Liberal, Fidel (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Text en actes de congrés
      Accés obert
      While the support of Mission Critical (MC) communications on commercial cellular networks has already been incorporated in the latest releases of Long Term Evolution (LTE), it is expected that the network slicing feature ...

    • System architecture in cognitive radio networks using a radio environment map 

      Vizziello, Anna; Pérez Romero, Jordi (2011)
      Text en actes de congrés
      Accés obert
      Cognitive Radio (CR) is considered as a promising solution to improve wireless spectrum utilization. Moreover, through optimization frameworks, Radio Resource Management (RRM) procedures are designed to enhance the efficient ...

    • Technical advances in the design and deployment of future heterogeneous networks 

      Kliks, Adrian; Pérez Romero, Jordi; Boukhatem, Lila; Zalonis, Andreas (2015-06-05)
      Article
      Accés obert
      The trend in wireless communications systems is the enhancement of the network infrastructure with the introduction of small cells, where a specific geographical area is served by low-range, low-power access points. The ...

    • Technology pillars in the architecture of future 5G mobile networks: NFV, MEC and SDN 

      Blanco, Begoña; Fajardo, Jose Oscar; Giannoulakis, Ioannis; Kafetzakis, Emmanouil; Peng, Shuping; Pérez Romero, Jordi; Trajkovska, Irena; Sayyad Khodashenas, Pouria; Goratti, Leonardo; Paolino, Michele; Sfakianakis, Evangelos; Liberal, Fidel; Xilouris, George (Elsevier, 2017-11-01)
      Article
      Accés obert
      This paper analyzes current standardization situation of 5G and the role network softwarization plays in order to address the challenges the new generation of mobile networks must face. This paper surveys recent documentation ...

    • Temporal and spatial spectrum assignment in next generation OFDMA networks through reinforcement learning 

      Bernardo Álvarez, Francisco; Agustí Comes, Ramon; Pérez Romero, Jordi; Sallent Roig, Oriol (2009)
      Text en actes de congrés
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      This paper proposes a Dynamic Spectrum Assignment strategy in the context of next generation multicell Orthogonal Frequency Division Multiple Access networks. The proposed strategy is able to dynamically find spectrum ...

    • Técnicas de ARQ en un esquema de acceso por paquetes DS-CDMA 

      Pérez Romero, Jordi; Sallent Roig, Oriol; Agustí Comes, Ramon (1998)
      Text en actes de congrés
      Accés obert

    • Técnicas de transmisión por paquetes alternativas a S-ALOHA basadas en CDMA para sistemas de comunicaciones móviles 

      Alonso Zárate, Luis Gonzaga; Pérez Romero, Jordi; Agustí Comes, Ramon; Sallent Roig, Oriol (Escuelas Tecnicas Superiores de Ingenieros de Telecomunicacion Universidades Politecnicas de Catalunya y Madrid, 1999)
      Text en actes de congrés
      Accés obert
      En esta comunicación se presentan los protocolos de acceso aleatorio ISMA y DQRAP adaptados para sistemas de comunicaciones móviles por paquetes basados en la técnica DS/CDMA. El primero de ellos mejora la eficiencia de ...