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Area of Science:

  • Telecommunications Engineering
  • Computer Networking

Background:

  • Cellular wireless systems are advancing with 5G deployment and 6G research.
  • Open Radio Access Networks (O-RAN) represent a significant parallel technological shift.
  • Network virtualization and programmability are key enablers for O-RAN.

Purpose of the Study:

  • To overview the concept of Open Radio Access Networks (O-RAN).
  • To present ongoing O-RAN Alliance standardization activities.
  • To analyze the feasibility of O-RAN through a practical use case.

Main Methods:

  • Literature review of O-RAN concepts and benefits.
  • Analysis of O-RAN Alliance standardization efforts.
  • Implementation study of a traffic steering use case using an open networking approach.

Main Results:

  • O-RAN introduces modularity and flexibility to radio access network design.
  • Standardization activities by the O-RAN Alliance are progressing.
  • A modular traffic steering use case demonstrates the viability of the open networking approach.

Conclusions:

  • O-RAN has the potential to reshape the design of radio access functionalities and services.
  • The O-RAN approach facilitates modular and flexible wireless network implementations.
  • Further standardization and adoption of O-RAN principles are expected to drive innovation in cellular systems.