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The Open Radio Access Network (RAN) is a networking paradigm that builds on top of cloud-based, multi-vendor, open and intelligent architectures to shape the next generation of cellular networks for 5G and beyond. While this new paradigm…

Cryptography and Security · Computer Science 2024-07-26 Joshua Groen , Salvatore DOro , Utku Demir , Leonardo Bonati , Michele Polese , Tommaso Melodia , Kaushik Chowdhury

Next generation wireless communications networks will leverage software-defined radio and networking technologies, combined with cloud and fog computing. A pool of resources can then be dynamically allocated to create personalized network…

Networking and Internet Architecture · Computer Science 2018-06-20 Marti Floriach-Pigem , Guillem Xercavins-Torregrosa , Antoni Gelonch-Bosch , Vuk Marojevic

Open-radio access network (O-RAN) seeks to establish the principles of openness, programmability, automation, intelligence, and hardware-software disaggregation with interoperable and standard-compliant interfaces. It advocates for…

The Open Radio Access Network (Open RAN) paradigm, and its reference architecture proposed by the O-RAN Alliance, is paving the way toward open, interoperable, observable and truly intelligent cellular networks. Crucial to this evolution is…

Networking and Internet Architecture · Computer Science 2025-10-08 Raoul Raftopoulos , Salvatore D'Oro , Tommaso Melodia , Giovanni Schembra

Radio access networks (RANs) in monolithic architectures have limited adaptability to supporting different network scenarios. Recently, open-RAN (O-RAN) techniques have begun adding enormous flexibility to RAN implementations. O-RAN is a…

Signal Processing · Electrical Eng. & Systems 2025-10-01 Myeung Suk Oh , Anindya Bijoy Das , Seyyedali Hosseinalipour , Taejoon Kim , David J. Love , Christopher G. Brinton

Data-intensive Artificial Intelligence (AI) applications at the network edge demand a fundamental shift in Radio Access Network (RAN) design, from merely consuming AI for network optimization, to actively enabling distributed AI workloads.…

Networking and Internet Architecture · Computer Science 2025-12-03 Michele Polese , Niloofar Mohamadi , Salvatore D'Oro , Leonardo Bonati , Tommaso Melodia

The integration of Open Radio Access Network (O-RAN) principles into 5G networks introduces a paradigm shift in how radio resources are managed and optimized. O-RAN's open architecture enables the deployment of intelligent applications…

Networking and Internet Architecture · Computer Science 2025-04-02 A. K. Subudhi , A. Piccioni , V. Gudepu , A. Marotta , F. Graziosi , R. M. Hegde , K. Kondepu

Building on the principles of openness and intelligence, there has been a concerted global effort from the operators towards enhancing the radio access network (RAN) architecture. The objective is to build an operator-defined RAN…

Signal Processing · Electrical Eng. & Systems 2020-05-19 Solmaz Niknam , Abhishek Roy , Harpreet S. Dhillon , Sukhdeep Singh , Rahul Banerji , Jeffery H. Reed , Navrati Saxena , Seungil Yoon

Cell-free massive multiple-input multiple-output (MIMO) is a key technology for next-generation wireless systems. The integration of cell-free massive MIMO within the open radio access network (O-RAN) architecture addresses the growing need…

Signal Processing · Electrical Eng. & Systems 2026-05-04 Mohammad Hossein Shokouhi , Vincent W. S. Wong

The Open Radio Access Network (O-RAN) architecture aims to support a plethora of network services, such as beam management and network slicing, through the use of third-party applications called xApps. To efficiently provide network…

Networking and Internet Architecture · Computer Science 2024-05-31 Federico Mungari , Corrado Puligheddu , Andres Garcia-Saavedra , Carla Fabiana Chiasserini

Open radio access network (ORAN) provides an open architecture to implement radio access network (RAN) of the fifth generation (5G) and beyond mobile communications. As a key technology for the evolution to the sixth generation (6G)…

Open Radio Access Network (O-RAN) is an emerging paradigm, whereby virtualized network infrastructure elements from different vendors communicate via open, standardized interfaces. A key element therein is the RAN Intelligent Controller…

Networking and Internet Architecture · Computer Science 2023-01-13 Jorge Martín-Pérez , Nuria Molner , Francesco Malandrino , Carlos Jesús Bernardos , Antonio de la Oliva , David Gomez-Barquero

The next generation of networks will actively embrace artificial intelligence (AI) and machine learning (ML) technologies for automation networks and optimal network operation strategies. The emerging network structure represented by Open…

Softwarization, programmable network control and the use of all-encompassing controllers acting at different timescales are heralded as the key drivers for the evolution to next-generation cellular networks. These technologies have fostered…

Networking and Internet Architecture · Computer Science 2022-09-01 Leonardo Bonati , Michele Polese , Salvatore D'Oro , Stefano Basagni , Tommaso Melodia

The open radio access network (O-RAN) architecture offers a cost-effective and scalable solution for internet service providers to optimize their networks using machine learning algorithms. The architecture's open interfaces enable network…

Machine Learning · Computer Science 2023-03-28 Chia-Hsiang Lai , Li-Hsiang Shen , Kai-Ten Feng

The evolution of wireless communication systems will be fundamentally impacted by an open radio access network (O-RAN), a new concept defining an intelligent architecture with enhanced flexibility, openness, and the ability to slice…

Cryptography and Security · Computer Science 2024-11-14 Mojdeh Karbalaee Motalleb , Chafika Benzaid , Tarik Taleb , Marcos Katz , Vahid Shah-Mansouri , JaeSeung Song

O-RAN introduces intelligent and flexible network control in all parts of the network. The use of controllers with open interfaces allow us to gather real time network measurements and make intelligent/informed decision. The work in this…

Networking and Internet Architecture · Computer Science 2024-05-01 Merim Dzaferagic , Bruno Missi Xavier , Diarmuid Collins , Vince D'Onofrio , Magnos Martinello , Marco Ruffini

Traffic Steering is a crucial technology for wireless networks, and multiple efforts have been put into developing efficient Machine Learning (ML)-enabled traffic steering schemes for Open Radio Access Networks (O-RAN). Given the swift…

Networking and Internet Architecture · Computer Science 2024-10-01 Md Arafat Habib , Hao Zhou , Pedro Enrique Iturria-Rivera , Yigit Ozcan , Medhat Elsayed , Majid Bavand , Raimundas Gaigalas , Melike Erol-Kantarci

The disaggregated, distributed and virtualised implementation of radio access networks allows for dynamic resource allocation. These attributes can be realised by virtue of the Open Radio Access Networks (O-RAN) architecture. In this…

Signal Processing · Electrical Eng. & Systems 2024-01-17 Mohammed M. H. Qazzaz , Łukasz Kułacz , Adrian Kliks , Syed A. Zaidi , Marcin Dryjanski , Des McLernon

This paper presents an extensible ns-3-based simulation framework for evaluating intent-based, semantics-aware control in Open RAN architectures. The framework integrates external Radio Access Network (RAN) Intelligent Controller (RIC)…

Networking and Internet Architecture · Computer Science 2026-05-29 Pouya Agheli , Grégoire Lefebvre