Open Simulations (OpenSim)


The OpenSim Research Unit has the vision of collaborative research through open-source code developments. In particular, we strongly believe that technology development and standardization should be based on common software platforms and joint efforts, from which the research and industrial community would benefit if properly managed. For this reason, we base our research on ns-3, an open-source end-to-end network simulator, and release major part of our developments and findings. In particular, we are active developers and maintainers of the LTE and NR modules and we focus on the extension of them with latest features and technologies.

The OpenSim RU focuses on:

  • Developing models, algorithms, and architectures for next-generation virtualized open radio access networks
  • Designing, implementing, validating, and evaluating 5G and beyond extensions in ns-3, including licensed/unlicensed/shared-based access and vehicular communications
  • Deriving 3GPP/IEEE technologies coexistence and spectrum sharing strategies
  • Designing radio resource, interference, and spectrum management techniques.

Research lines

  • Open RAN
  • Hybrid centralized RAN
  • Disaggregated RAN
  • Fronthaul compression control
  • Fronthaul access networks
  • Open software

  • Coexistence mechanisms
  • Spectrum sharing
  • Spectrum network management
  • 3GPP/IEEE convergence
  • Cellular access to unlicensed spectrum
  • Multi-band operations
  • Wireless private networks

  • Efficient radio resource management
  • Interference management and coordination
  • ML for self-organized networks
  • Vehicular to everything communications
  • Convex and non-convex optimization
  • Centralized scheduling
  • QoS management
  • Traffic management

Methodological approach:

  • Analytical problem formulation and solving, through convex/non-convex optimization and/or machine learning-based techniques
  • Advances in spectrum sharing, SON, and RRM
    • IEEE/3GPP coexistence procedures
    • Spectrum sharing solutions
    • Radio, interference, spectrum, traffic management techniques
    • Fronthaul compression control strategies
    • ML for SON
  • Integration of procedures and algorithms in network simulator
  • ns-3 LENA/5G-LENA design, development, validation, calibration, and evaluations
    • ns-3 LENA (LTE) module and its extensions (LTE-LAA, LTE-U, D2D)
    • ns-3 5G-LENA (NR) module and its extensions (NR-U, NR V2X)

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