The Experts below are selected from a list of 1500 Experts worldwide ranked by ideXlab platform

Leonardo Bonati - One of the best experts on this subject based on the ideXlab platform.

  • Colosseum the world s largest wireless network emulator
    ACM IEEE International Conference on Mobile Computing and Networking, 2021
    Co-Authors: Tommaso Melodia, Stefano Basagni, Kaushik R Chowdhury, Abhimanyu Gosain, Michele Polese, Pedram Johari, Leonardo Bonati
    Abstract:

    Practical experimentation and prototyping are core steps in the development of any wireless technology. Often times, however, this crucial step is confined to small laboratory setups that do not capture the scale of commercial deployments and do not ensure result reproducibility and replicability, or it is skipped altogether for lack of suitable hardware and testing facilities. Recent years have seen the development of publicly-available testing platforms for wireless experimentation at scale. Examples include the testbeds of the PAWR program and Colosseum, the world's largest wireless network emulator. With its 256 software-defined radios, 24 racks of powerful compute servers and first-of-its-kind channel emulator, Colosseum allows users to prototype wireless solutions at scale, and guarantees reproducibility and replicability of results. This tutorial provides an overview of the Colosseum platform. We describe the architecture and components of the testbed as a whole, and we then showcase how to run practical experiments in diverse scenarios with heterogeneous wireless technologies (e.g., Wi-Fi and cellular). We also emphasize how Colosseum experiments can be ported to different testing platforms, facilitating full-cycle experimental wireless research: design, experiments and tests at scale in a fully controlled and observable environment and testing in the field. The tutorial concludes with considerations on the flexible future of Colosseum, focusing on its planned extension to emulate larger scenarios and channels at higher frequency bands (mmWave).

Bonati Leonardo - One of the best experts on this subject based on the ideXlab platform.

  • Colosseum: Large-Scale Wireless Experimentation Through Hardware-in-the-Loop Network Emulation
    2021
    Co-Authors: Bonati Leonardo, Johari Pedram, Polese Michele, D'oro Salvatore, Mohanti Subhramoy, Tehrani-moayyed Miead, Villa Davide, Shrivastava Shweta, Tassie Chinenye, Yoder Kurt
    Abstract:

    Colosseum is an open-access and publicly-available large-scale wireless testbed for experimental research via virtualized and softwarized waveforms and protocol stacks on a fully programmable, "white-box" platform. Through 256 state-of-the-art Software-defined Radios and a Massive Channel Emulator core, Colosseum can model virtually any scenario, enabling the design, development and testing of solutions at scale in a variety of deployments and channel conditions. These Colosseum radio-frequency scenarios are reproduced through high-fidelity FPGA-based emulation with finite-impulse response filters. Filters model the taps of desired wireless channels and apply them to the signals generated by the radio nodes, faithfully mimicking the conditions of real-world wireless environments. In this paper we describe the architecture of Colosseum and its experimentation and emulation capabilities. We then demonstrate the effectiveness of Colosseum for experimental research at scale through exemplary use cases including prevailing wireless technologies (e.g., cellular and Wi-Fi) in spectrum sharing and unmanned aerial vehicle scenarios. A roadmap for Colosseum future updates concludes the paper

  • Intelligence and Learning in O-RAN for Data-driven NextG Cellular Networks
    2021
    Co-Authors: Bonati Leonardo, Polese Michele, D'oro Salvatore, Basagni Stefano, Melodia Tommaso
    Abstract:

    Next Generation (NextG) cellular networks will be natively cloud-based and built upon programmable, virtualized, and disaggregated architectures. The separation of control functions from the hardware fabric and the introduction of standardized control interfaces will enable the definition of custom closed-control loops, which will ultimately enable embedded intelligence and real-time analytics, thus effectively realizing the vision of autonomous and self-optimizing networks. This article explores the disaggregated network architecture proposed by the O-RAN Alliance as a key enabler of NextG networks. Within this architectural context, we discuss the potential, the challenges, and the limitations of data-driven optimization approaches to network control over different timescales. We also present the first large-scale integration of O-RAN-compliant software components with an open-source full-stack softwarized cellular network. Experiments conducted on Colosseum, the world's largest wireless network emulator, demonstrate closed-loop integration of real-time analytics and control through deep reinforcement learning agents. We also show the feasibility of Radio Access Network (RAN) control through xApps running on the near real-time RAN Intelligent Controller, to optimize the scheduling policies of co-existing network slices, leveraging the O-RAN open interfaces to collect data at the edge of the network

  • Intelligence and Learning in O-RAN for Data-driven NextG Cellular Networks
    2020
    Co-Authors: Bonati Leonardo, Polese Michele, D'oro Salvatore, Basagni Stefano, Melodia Tommaso
    Abstract:

    Future, "NextG" cellular networks will be natively cloud-based and built upon programmable, virtualized, and disaggregated architectures. The separation of control functions from the hardware fabric and the introduction of standardized control interfaces will enable the definition of custom closed-control loops, which will ultimately enable embedded intelligence and real-time analytics, thus effectively realizing the vision of autonomous and self-optimizing networks. This article explores the NextG disaggregated architecture proposed by the O-RAN Alliance. Within this architectural context, it discusses potential, challenges, and limitations of data-driven optimization approaches to network control over different timescales. It also provides the first large-scale demonstration of the integration of O-RAN-compliant software components with an open-source full-stack softwarized cellular network. Experiments conducted on Colosseum, the world's largest wireless network emulator, demonstrate closed-loop integration of real-time analytics and control through deep reinforcement learning agents. We also demonstrate for the first time Radio Access Network (RAN) control through xApps running on the near real-time RAN Intelligent Controller (RIC), to optimize the scheduling policies of co-existing network slices, leveraging O-RAN open interfaces to collect data at the edge of the network

Melodia Tommaso - One of the best experts on this subject based on the ideXlab platform.

  • Intelligence and Learning in O-RAN for Data-driven NextG Cellular Networks
    2021
    Co-Authors: Bonati Leonardo, Polese Michele, D'oro Salvatore, Basagni Stefano, Melodia Tommaso
    Abstract:

    Next Generation (NextG) cellular networks will be natively cloud-based and built upon programmable, virtualized, and disaggregated architectures. The separation of control functions from the hardware fabric and the introduction of standardized control interfaces will enable the definition of custom closed-control loops, which will ultimately enable embedded intelligence and real-time analytics, thus effectively realizing the vision of autonomous and self-optimizing networks. This article explores the disaggregated network architecture proposed by the O-RAN Alliance as a key enabler of NextG networks. Within this architectural context, we discuss the potential, the challenges, and the limitations of data-driven optimization approaches to network control over different timescales. We also present the first large-scale integration of O-RAN-compliant software components with an open-source full-stack softwarized cellular network. Experiments conducted on Colosseum, the world's largest wireless network emulator, demonstrate closed-loop integration of real-time analytics and control through deep reinforcement learning agents. We also show the feasibility of Radio Access Network (RAN) control through xApps running on the near real-time RAN Intelligent Controller, to optimize the scheduling policies of co-existing network slices, leveraging the O-RAN open interfaces to collect data at the edge of the network

  • Intelligence and Learning in O-RAN for Data-driven NextG Cellular Networks
    2020
    Co-Authors: Bonati Leonardo, Polese Michele, D'oro Salvatore, Basagni Stefano, Melodia Tommaso
    Abstract:

    Future, "NextG" cellular networks will be natively cloud-based and built upon programmable, virtualized, and disaggregated architectures. The separation of control functions from the hardware fabric and the introduction of standardized control interfaces will enable the definition of custom closed-control loops, which will ultimately enable embedded intelligence and real-time analytics, thus effectively realizing the vision of autonomous and self-optimizing networks. This article explores the NextG disaggregated architecture proposed by the O-RAN Alliance. Within this architectural context, it discusses potential, challenges, and limitations of data-driven optimization approaches to network control over different timescales. It also provides the first large-scale demonstration of the integration of O-RAN-compliant software components with an open-source full-stack softwarized cellular network. Experiments conducted on Colosseum, the world's largest wireless network emulator, demonstrate closed-loop integration of real-time analytics and control through deep reinforcement learning agents. We also demonstrate for the first time Radio Access Network (RAN) control through xApps running on the near real-time RAN Intelligent Controller (RIC), to optimize the scheduling policies of co-existing network slices, leveraging O-RAN open interfaces to collect data at the edge of the network

Reitz-joosse Bettina - One of the best experts on this subject based on the ideXlab platform.

  • Viewing the City of Rome in the Latin Literature of the ventennio fascista: Francesco Giammaria’s Capitolium novum
    2019
    Co-Authors: Bettegazzi Nicolò, Lamers Han, Reitz-joosse Bettina
    Abstract:

    This article analyses Francesco Giammaria’s Capitolium novum, a Latin poem describing a tour of the historic centre of Rome in 1933, in its historical, architectural, and intellectual contexts. We offer a detailed analysis of three key sections of the poem, which deal with the Colosseum, the Arch of Constantine, and the Ara dei caduti fascisti respectively. We show how Giammaria’s poem responds to urbanistic interventions in the city centre during the ventennio, and specifically to the Fascist ‘recoding’ of the city as the ‘Third Rome’, with a narrative emphasizing the historically layered nature of Rome. Giammaria offers his own interpretation of the respective importance and interrelation of the city’s historic layers: the rhetoric of his poem is aimed at superimposing Catholic Rome over pagan Rome, and at framing all historical layers of the city, including the Fascist one, as part of its Christian mission and destiny. Thus, Capitolium novum resonates with efforts of intellectuals gathered around Carlo Galassi Paluzzi’s Istituto di Studi Romani [Institute of Roman Studies], who aimed to promote a cultural reconciliation between Fascism and Catholicism

  • Viewing Rome in the Latin Literature of the ventennio fascista Francesco Giammaria's Capitolium novum
    'Brill', 2019
    Co-Authors: Lamers Han, Reitz-joosse Bettina, Bettegazzi Nicolò
    Abstract:

    This article analyses Francesco Giammaria’s Capitolium Novum, a Latin poem describing a tour of the historic center of Rome in 1933, in its historical, architectural, and intellectual contexts. It offers a detailed analysis of three key sections of the poem, which deal with the Colosseum, the Arch of Constantine, and the Ara dei caduti fascisti respectively. The authors show how Giammaria’s poem responds to urbanistic interventions in the city center during the ventennio, and specifically to the Fascist ‘recoding’ of the city as the ‘Third Rome’, with a narrative emphasizing the historically layered nature of Rome. Giammaria offers his own interpretation of the respective importance and interrelation of the city’s historic layers: the rhetoric of his poem is aimed at superimposing Catholic Rome over pagan Rome, and at framing all historical layers of the city, including the Fascist one, as part of its Christian mission and destiny. Thus, Capitolium novum resonates with efforts of intellectuals gathered around Carlo Galassi Paluzzi’s Istituto di Studi Romani, who aimed to promote a cultural reconciliation between Fascism and Catholicism

  • Viewing the City of Rome in the Latin Literature of the Ventennio Fascista: Francesco Giammaria’s Capitolium novum
    'Brill', 2019
    Co-Authors: Bettegazzi Nicolò, Lamers Han, Reitz-joosse Bettina
    Abstract:

    This article analyses Francesco Giammaria’s Capitolium novum, a Latin poem describing a tour of the historic centre of Rome in 1933, in its historical, architectural, and intellectual contexts. We offer a detailed analysis of three key sections of the poem, which deal with the Colosseum, the Arch of Constantine, and the Ara dei caduti fascisti respectively. We show how Giammaria’s poem responds to urbanistic interventions in the city centre during the ventennio, and specifically to the Fascist ‘recoding’ of the city as the ‘Third Rome’, with a narrative emphasizing the historically layered nature of Rome. Giammaria offers his own interpretation of the respective importance and interrelation of the city’s historic layers: the rhetoric of his poem is aimed at superimposing Catholic Rome over pagan Rome, and at framing all historical layers of the city, including the Fascist one, as part of its Christian mission and destiny. Thus, Capitolium novum resonates with efforts of intellectuals gathered around Carlo Galassi Paluzzi’s Istituto di Studi Romani, who aimed to promote a cultural reconciliation between Fascism and Catholicism

Bettegazzi Nicolò - One of the best experts on this subject based on the ideXlab platform.

  • Viewing the City of Rome in the Latin Literature of the ventennio fascista: Francesco Giammaria’s Capitolium novum
    2019
    Co-Authors: Bettegazzi Nicolò, Lamers Han, Reitz-joosse Bettina
    Abstract:

    This article analyses Francesco Giammaria’s Capitolium novum, a Latin poem describing a tour of the historic centre of Rome in 1933, in its historical, architectural, and intellectual contexts. We offer a detailed analysis of three key sections of the poem, which deal with the Colosseum, the Arch of Constantine, and the Ara dei caduti fascisti respectively. We show how Giammaria’s poem responds to urbanistic interventions in the city centre during the ventennio, and specifically to the Fascist ‘recoding’ of the city as the ‘Third Rome’, with a narrative emphasizing the historically layered nature of Rome. Giammaria offers his own interpretation of the respective importance and interrelation of the city’s historic layers: the rhetoric of his poem is aimed at superimposing Catholic Rome over pagan Rome, and at framing all historical layers of the city, including the Fascist one, as part of its Christian mission and destiny. Thus, Capitolium novum resonates with efforts of intellectuals gathered around Carlo Galassi Paluzzi’s Istituto di Studi Romani [Institute of Roman Studies], who aimed to promote a cultural reconciliation between Fascism and Catholicism

  • Viewing Rome in the Latin Literature of the ventennio fascista Francesco Giammaria's Capitolium novum
    'Brill', 2019
    Co-Authors: Lamers Han, Reitz-joosse Bettina, Bettegazzi Nicolò
    Abstract:

    This article analyses Francesco Giammaria’s Capitolium Novum, a Latin poem describing a tour of the historic center of Rome in 1933, in its historical, architectural, and intellectual contexts. It offers a detailed analysis of three key sections of the poem, which deal with the Colosseum, the Arch of Constantine, and the Ara dei caduti fascisti respectively. The authors show how Giammaria’s poem responds to urbanistic interventions in the city center during the ventennio, and specifically to the Fascist ‘recoding’ of the city as the ‘Third Rome’, with a narrative emphasizing the historically layered nature of Rome. Giammaria offers his own interpretation of the respective importance and interrelation of the city’s historic layers: the rhetoric of his poem is aimed at superimposing Catholic Rome over pagan Rome, and at framing all historical layers of the city, including the Fascist one, as part of its Christian mission and destiny. Thus, Capitolium novum resonates with efforts of intellectuals gathered around Carlo Galassi Paluzzi’s Istituto di Studi Romani, who aimed to promote a cultural reconciliation between Fascism and Catholicism

  • Viewing the City of Rome in the Latin Literature of the Ventennio Fascista: Francesco Giammaria’s Capitolium novum
    'Brill', 2019
    Co-Authors: Bettegazzi Nicolò, Lamers Han, Reitz-joosse Bettina
    Abstract:

    This article analyses Francesco Giammaria’s Capitolium novum, a Latin poem describing a tour of the historic centre of Rome in 1933, in its historical, architectural, and intellectual contexts. We offer a detailed analysis of three key sections of the poem, which deal with the Colosseum, the Arch of Constantine, and the Ara dei caduti fascisti respectively. We show how Giammaria’s poem responds to urbanistic interventions in the city centre during the ventennio, and specifically to the Fascist ‘recoding’ of the city as the ‘Third Rome’, with a narrative emphasizing the historically layered nature of Rome. Giammaria offers his own interpretation of the respective importance and interrelation of the city’s historic layers: the rhetoric of his poem is aimed at superimposing Catholic Rome over pagan Rome, and at framing all historical layers of the city, including the Fascist one, as part of its Christian mission and destiny. Thus, Capitolium novum resonates with efforts of intellectuals gathered around Carlo Galassi Paluzzi’s Istituto di Studi Romani, who aimed to promote a cultural reconciliation between Fascism and Catholicism