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The future of cellular networks is contingent on artificial intelligence (AI) based automation, particularly for radio access network (RAN) operation, optimization, and troubleshooting. To achieve such zero-touch automation, a myriad of…

In order to make Internet connections ubiquitous and autonomous in our daily lives, maximizing the utilization of radio resources and social information is one of the major research topics in future mobile communication technologies. Fog…

Information Theory · Computer Science 2017-07-24 Haijun Zhang , Yu Qiu , Xiaoli Chu , Keping Long , Victor C. M. Leung

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

The O-RAN architecture enables a more flexible and dynamic radio access network (RAN) control by separating hardware and software components. However, the distributed nature of the O-RAN architecture also presents several challenges for…

Networking and Internet Architecture · Computer Science 2023-11-30 Cezary Adamczyk

Artificial Intelligence (AI) plays a key role in developing 6G networks. While current specifications already include Network Data Analytics Function (NWDAF) as a network element responsible for providing information about the core, a more…

Networking and Internet Architecture · Computer Science 2025-07-25 Daniel Ricardo Cunha Oliveira , Rodrigo Moreira , Flávio de Oliveira Silva

Open Radio Access Network (O-RAN) has introduced an emerging RAN architecture that enables openness, intelligence, and automated control. The RAN Intelligent Controller (RIC) provides the platform to design and deploy RAN controllers. xApps…

Networking and Internet Architecture · Computer Science 2022-10-11 Mohammadreza Kouchaki , Vuk Marojevic

With growing mobile-network complexity, management and optimization have become increasingly difficult. Centralized algorithms face high control-data overhead and computational load, while distributed approaches often perform far from…

Networking and Internet Architecture · Computer Science 2026-04-28 Paweł Kryszkiewicz , Łukasz Kułacz , Marcin Pakuła , Marcin Dryjanski , Marcin Hoffmann , Piotr Skrzypczak , Heiko Lehmann , Martin Stahn

The open radio access network (O-RAN) offers new degrees of freedom for building and operating advanced cellular networks. Emphasizing on RAN disaggregation, open interfaces, multi-vendor support, and RAN intelligent controllers (RICs),…

Cryptography and Security · Computer Science 2024-03-08 Aly S. Abdalla , Joshua Moore , Nisha Adhikari , Vuk Marojevic

Open Radio Access Networks (O-RAN) are expected to revolutionize the telecommunications industry with benefits like cost reduction, vendor diversity, and improved network performance through AI optimization. Supporting the O-RAN ALLIANCE's…

Networking and Internet Architecture · Computer Science 2024-10-08 Tuan V. Ngo , Mao V. Ngo , Binbin Chen , Gabriele Gemmi , Eduardo Baena , Michele Polese , Tommaso Melodia , William Chien , Tony Quek

To keep supporting next-generation requirements, the radio access infrastructure will increasingly densify. Cell-free (CF) network architectures are emerging, combining dense deployments with extreme flexibility in allocating resources to…

Networking and Internet Architecture · Computer Science 2023-01-26 Vida Ranjbar , Adam Girycki , Md Arifur Rahman , Sofie Pollin , Marc Moonen , Evgenii Vinogradov

Anomaly detection in time series has been widely researched and has important practical applications. In recent years, anomaly detection algorithms are mostly based on deep-learning generative models and use the reconstruction error to…

Machine Learning · Computer Science 2020-10-15 Chunkai Zhang , Wei Zuo , Xuan Wang

Cellular Radio Access Networks (RANs) are rapidly evolving towards 6G, driven by the need to reduce costs and introduce new revenue streams for operators and enterprises. In this context, AI emerges as a key enabler in solving complex RAN…

Networking and Internet Architecture · Computer Science 2025-09-30 Ganesh Ananthanarayanan , Matthew Balkwill , Xenofon Foukas , Zhihua Lai , Bozidar Radunovic , Connor Settle , Yongguang Zhang

Radio access networks (RAN) are going through a paradigm shift towards interoperable, intelligent, software-defined, and cloud-native open RAN solutions. A key challenge towards the adoption and deployment of open RAN at scale is…

Signal Processing · Electrical Eng. & Systems 2023-05-17 Lopamudra Kundu , Xingqin Lin , Elena Agostini , Vikrama Ditya

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)…

We design and demonstrate a method for early detection of Denial-of-Service attacks. The proposed approach takes advantage of the OpenRAN framework to collect measurements from the air interface (for attack detection) and to dynamically…

Networking and Internet Architecture · Computer Science 2023-02-06 Bruno Missi Xavier , Merim Dzaferagic , Diarmuid Collins , Giovanni Comarela , Magnos Martinello , Marco Ruffini

Openness and programmability in the O-RAN architecture enable closed-loop control of the Radio Access Network (RAN). Artificial Intelligence (AI)-driven xApps, in the near-real-time RAN Intelligent Controller (RIC), can learn from network…

Networking and Internet Architecture · Computer Science 2026-02-04 Angelo Feraudo , Stefano Maxenti , Andrea Lacava , Leonardo Bonati , Paolo Bellavista , Michele Polese , Tommaso Melodia

The AI-native vision of 6G requires Radio Access Networks to train, deploy, and continuously refine thousands of machine learning (ML) models that drive real-time radio network optimization. Although the Open RAN (O-RAN) architecture…

Networking and Internet Architecture · Computer Science 2026-01-27 Mounir Bensalem , Fin Gentzen , Tuck-Wai Choong , Yu-Chiao Jhuang , Admela Jukan , Jenq-Shiou Leu

The transition to disaggregated and interoperable Open Radio Access Network (RAN) architectures and the introduction of RAN Intelligent Controllers (RICs) in O-RAN creates new resource optimization opportunities and fine-grained tuning and…

Networking and Internet Architecture · Computer Science 2026-02-16 Ravis Shirkhani , Stefano Maxenti , Leonardo Bonati , Niloofar Mohamadi , Maxime Elkael , Umair Hashmi , Jeebak Mitra , Michele Polese , Tommaso Melodia , Salvatore D'Oro

Robust Anomaly Detection (AD) on time series data is a key component for monitoring many complex modern systems. These systems typically generate high-dimensional time series that can be highly noisy, seasonal, and inter-correlated. This…

Machine Learning · Computer Science 2020-07-29 Farzaneh Khoshnevisan , Zhewen Fan , Vitor R. Carvalho

Open radio access networks (e.g., O-RAN) facilitate fine-grained control (e.g., near-RT RIC) in next-generation networks, necessitating advanced AI/ML techniques in handling online resource orchestration in real-time. However, existing…

Networking and Internet Architecture · Computer Science 2025-01-14 Ming Zhao , Yuru Zhang , Qiang Liu , Ahan Kak , Nakjung Choi