Now showing items 21-40 of 227

    • A novel framework for dynamic spectrum management in multiCell OFDMA networks based on reinforcement learning 

      Bernardo Álvarez, Francisco; Agustí Comes, Ramon; Pérez Romero, Jordi; Sallent Roig, Oriol (2010)
      Conference report
      Open Access
      In this work the feasibility of Reinforcement Learning (RL) for Dynamic Spectrum Management (DSM) in the context of next generation multicell Orthogonal Frequency Division Multiple Access (OFDMA) networks is studied. ...
    • A novel spectrum selection strategy for matching multi-service secondary traffic to heterogeneous primary spectrum opportunities 

      Bouali, Faouzi; Sallent Roig, Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (IEEE, 2011)
      Conference report
      Restricted access - publisher's policy
      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 this context, ...
    • A real time emulator demonstrating advanced resource management solutions 

      Gelonch Bosch, Antonio José; Revés Ballesté, Xavier; Marojevic, Vuk; Nasreddine, Jad Nayef; Pérez Romero, Jordi; Sallent Roig, Oriol (2010-07)
      Article
      Restricted access - publisher's policy
    • A roadmap from UMTS optimization to LTE self-optimization 

      Sallent Roig, Oriol; Pérez Romero, Jordi; Sánchez González, Juan; Agustí Comes, Ramon; Díaz Guerra, Miguel Angel; Henche, David; Paul, Daniel (2011-06)
      Article
      Restricted access - publisher's policy
      Self-Organizing Networks (SON) are currently being introduced by the 3rd Generation Partnership Project (3GPP) as part of the Long Term Evolution (LTE) system as a key driver for improving the operation of wireless networks. ...
    • A robustness analysis of learning-based coexistence mechanisms for LTE-U operation in non-stationary conditions 

      Pérez Romero, Jordi; Sallent Roig, Oriol; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Conference report
      Restricted access - publisher's policy
      The use of Long Term Evolution (LTE) in the unlicensed 5 GHz band, referred to as LTE-U, is a promising enhancement to increase the capacity of LTE networks and meet the requirements of future systems. This paper considers ...
    • A rule-based solution search methodology for self-optimization in cellular networks 

      Sánchez González, Juan; Pérez Romero, Jordi; Sallent Roig, Oriol (2014-12-12)
      Article
      Restricted access - publisher's policy
      This letter presents a rule-based solution search (RBSS) algorithm for self-optimization in a cellular network. It improves the solution search process of classical optimization methodologies by including a set of rules ...
    • A self-organized spectrum assignment strategy in next generation OFDMA networks providing secondary spectrum access 

      Bernardo Álvarez, Francisco; Agustí Comes, Ramon; Pérez Romero, Jordi; Sallent Roig, Oriol (2009)
      Conference report
      Open Access
      This paper proposes a Self-organized Spectrum Assignment strategy in the context of next generation multicell Orthogonal Frequency Division Multiple Access networks. The proposed strategy is able to dynamically find ...
    • A simple algorithm to distribute optimally a number of external base stations in a microcellular environment 

      Agustí Comes, Ramon; Monfort, Xavier Querol; Pérez Romero, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 1998)
      Conference report
      Open Access
      A simple algorithm is proposed for the optimal distribution of a number of base stations in a microcellular environment. Criteria are defined in order to decide the combinations of antennas that should be tested, and a ...
    • A solution framework to provide management services for wireless communications in the digital home 

      Ferrús Ferré, Ramón Antonio; Sallent Roig, Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (2012-11)
      Article
      Restricted access - publisher's policy
      The future digital home (DH) is envisioned as a place where a plethora of diverse personal and machine-to-machine communications will coexist to support different applications in areas such as information and ...
    • A Spectrum selection framework for opportunistic networks 

      Moessner, Klaus; Pérez Romero, Jordi; Sallent Roig, Oriol; Bouali, Faouzi; Sarvanko, Heli; Mustonen, Miia; Matinmikko, Marja; Lee, Haeyoung; Vahid, Seiamak (IIMC International Information Management Corporation Ltd, 2012)
      Conference lecture
      Open Access
      This paper presents a framework for including cognitive management functionalities in the spectrum selection process for Opportunistic Networks (ONs).The framework is based on a decision making functionality interacting ...
    • A testbed platform to demonstrate spectrum selection in opportunistic networks 

      Raschellà, Alessandro; Umbert Juliana, Anna; Pérez Romero, Jordi; Sallent Roig, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      This paper presents a testbed platform to demonstrate and validate spectrum opportunity identification and spectrum selection functionalities in Opportunistic Networks (ONs). The hardware component of the testbed is based ...
    • A tutorial on the characterisation and modelling of low layer functional splits for flexible radio access networks in 5G and beyond 

      Pérez Romero, Jordi; Sallent Roig, Oriol; Gelonch Bosch, Antonio José; Gelabert Doran, Xavier; Klaiqi, Bleron; Kahn, Marcus; Campoy García, David (Institute of Electrical and Electronics Engineers (IEEE), 2023-10)
      Article
      Open Access
      The centralization of baseband (BB) functions in a radio access network (RAN) towards data processing centres is receiving increasing interest as it enables the exploitation of resource pooling and statistical multiplexing ...
    • Admission control for multi-tenant radio access networks 

      Pérez Romero, Jordi; Sallent Roig, Oriol; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (2017)
      Conference report
      Restricted access - publisher's policy
      The sharing of Radio Access Networks is gaining momentum in small cell scenarios, due to the associated reduction in capital and operational costs. In this scenario, the split of radio resources among tenants sharing the ...
    • Advanced spectrum management for the downlink of WCDMA systems using genetic algorithms 

      Nasreddine, Jad Nayef; Pérez Romero, Jordi; Sallent Roig, Oriol (2009)
      Conference report
      Open Access
      In this paper, we propose an advanced spectrum management approach for the downlink of WCDMA systems using genetic algorithms and the concept of coupling matrix, which is able to capture inter-cell interactions. Simulation ...
    • AI-powered edge computing evolution for beyond 5G communication networks 

      Kartsakli, Elli; Pérez Romero, Jordi; Sallent Roig, Oriol; Bartzoudis, Nikolaos; Frascolla, Valerio; Mohalik, Swarup Kumar; Metsch, Thijs; Antonopoulos, Angelos; Tuna, Ömer Faruk; Deng, Yansha; Tao, Xin; Serrano, Maria A.; Quiñones Moreno, Eduardo (Institute of Electrical and Electronics Engineers (IEEE), 2023)
      Conference report
      Open Access
      Edge computing is a key enabling technology that is expected to play a crucial role in beyond 5G (B5G) and 6G communication networks. By bringing computation closer to where the data is generated, and leveraging Artificial ...
    • An adaptive ISMA-DS/CDMA MAC protocol for third-generation mobile communications systems 

      Pérez Romero, Jordi; Agustí Comes, Ramon; Sallent Roig, Oriol (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-11)
      Article
      Open Access
      In this paper, an inhibit sense multiple access–direct sequence/code division multiple access (ISMA-DS/CDMA) medium access control protocol for a packet transmission mobile radio network is presented. The main feature ...
    • An analytical model for multi-tenant radio access networks supporting guaranteed bit rate services 

      Vilà Muñoz, Irene; Sallent Roig, Oriol; Umbert Juliana, Anna; Pérez Romero, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2019-01-01)
      Article
      Open Access
      Network slicing is a key feature of forthcoming fifth generation (5G) systems to facilitate the partitioning of the network into multiple logical networks customized according to different business and application needs. ...
    • An application of reinforcement learning for efficient spectrum usage in next-generation mobile cellular networks 

      Bernardo Álvarez, Francisco; Agustí Comes, Ramon; Pérez Romero, Jordi; Sallent Roig, Oriol (2010-07)
      Article
      Open Access
      This paper proposes reinforcement learning as a foundational stone of a framework for efficient spectrum usage in the context of nextgeneration mobile cellular networks. The objective of the framework is to efficiently use ...
    • An efficient mode selection for improving resource utilization in sidelink V2X cellular networks 

      Albonda, Haider Daami R.; Pérez Romero, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Restricted access - publisher's policy
      Sidelink (SL) communication underlying cellular networks is a new paradigm that has been proposed to enhance the performance of cellular networks and support vehicle-to-everything (V2X) communications that enable vehicles ...
    • An efficient RAN slicing strategy for a heterogeneous network with eMBB and V2X services 

      Resin Albonda, Haider D.; Pérez Romero, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2019-03)
      Article
      Open Access
      Emerging 5G wireless technology will support services and use cases with vastly heterogeneous requirements. Network slicing, which allows composing multiple dedicated logical networks with specific functionality running ...