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Dynamic resource allocation in open radio access network (O-RAN) heterogeneous networks (HetNets) presents a complex optimisation challenge under varying user loads. We propose a near-real-time RAN intelligent controller (Near-RT RIC) xApp…

Machine Learning · Computer Science 2026-04-08 Oluwaseyi Giwa , Jonathan Shock , Jaco Du Toit , Tobi Awodumila

While the Open Radio Access Network Alliance (O-RAN) architecture enables third-party applications to optimize radio access networks at multiple timescales, real-time distributed applications (dApps) that demand low latency, high…

Networking and Internet Architecture · Computer Science 2026-03-19 João Paulo Esper , Yure Freitas , Pedro Souza , Bruno Silvestre , Joao F. Santos , Alexandre Huff , Cristiano Both , Kleber Cardoso

Open Radio Access Network (O-RAN) along with artificial intelligence, machine learning, cloud and edge networking, and virtualization are important enablers for designing flexible and software-driven programmable wireless networks. In…

Signal Processing · Electrical Eng. & Systems 2025-12-01 Ali Fuat Sahin , Onur Salan , Ibrahim Hokelek , Ali Gorcin

Recently, open radio access network (O-RAN) has become a promising technology to provide an open environment for network vendors and operators. Coordinating the x-applications (xAPPs) is critical to increase flexibility and guarantee high…

Networking and Internet Architecture · Computer Science 2022-08-04 Han Zhang , Hao Zhou , Melike Erol-Kantarci

In mobile networks, Open Radio Access Network (ORAN) provides a framework for implementing network slicing that interacts with the resources at the lower layers. Both monitoring and Radio Access Network (RAN) control is feasible for both 4G…

Networking and Internet Architecture · Computer Science 2026-01-15 Andreas Casparsen , Beatriz Soret , Jimmy Jessen Nielsen , Petar Popovski

Open Radio Access Network (RAN) enables flexible, AI-driven control of mobile networks through disaggregated, multi-vendor components. In this architecture, xApps handle real-time functions, whereas rApps in the non-real-time controller…

Systems and Control · Electrical Eng. & Systems 2026-03-10 Haiyuan Li , Yulei Wu , Dimitra Simeonidou

The Open Radio Access Network (O-RAN) architecture enables a flexible, vendor-neutral deployment of 5G networks by disaggregating base station components and supporting third-party xApps for near real-time RAN control. However, the…

Networking and Internet Architecture · Computer Science 2026-03-13 Pragya Sharma , Shihua Sun , Shachi Deshpande , Angelos Stavrou , Haining Wang

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

Network virtualization, software-defined infrastructure, and orchestration are pivotal elements in contemporary networks, yielding new vectors for optimization and novel capabilities. In line with these principles, O-RAN presents an avenue…

Networking and Internet Architecture · Computer Science 2024-01-17 Stefano Maxenti , Salvatore D'Oro , Leonardo Bonati , Michele Polese , Antonio Capone , Tommaso Melodia

Open Radio Access Networks (O-RAN) are transforming telecommunications by shifting from centralized to distributed architectures, promoting flexibility, interoperability, and innovation through open interfaces and multi-vendor environments.…

Cryptography and Security · Computer Science 2025-03-12 Zaineh Abughazzah , Emna Baccour , Ahmed Refaey , Amr Mohamed , Mounir Hamdi

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

User demand on network communication infrastructure has never been greater with applications such as extended reality, holographic telepresence, and wireless brain-computer interfaces challenging current networking capabilities. Open RAN…

Networking and Internet Architecture · Computer Science 2024-04-29 Noe Yungaicela-Naula , Vishal Sharma , Sandra Scott-Hayward

5G and beyond mobile networks will support heterogeneous use cases at an unprecedented scale, thus demanding automated control and optimization of network functionalities customized to the needs of individual users. Such fine-grained…

Networking and Internet Architecture · Computer Science 2022-10-18 Andrea Lacava , Michele Polese , Rajarajan Sivaraj , Rahul Soundrarajan , Bhawani Shanker Bhati , Tarunjeet Singh , Tommaso Zugno , Francesca Cuomo , Tommaso Melodia

This work proposes an integrated approach for optimising Federated Learning (FL) communication in dynamic and heterogeneous network environments. Leveraging the modular flexibility of the Open Radio Access Network (ORAN) architecture and…

Systems and Control · Electrical Eng. & Systems 2025-05-27 Abdelaziz Salama , Mohammed M. H. Qazzaz , Syed Danial Ali Shah , Maryam Hafeez , Syed Ali Zaidi

The Open Radio Access Network (O-RAN) initiative, characterized by open interfaces and AI/ML-capable RAN Intelligent Controller (RIC), facilitates effective spectrum sharing among RANs. In this context, we introduce AdapShare, an…

Networking and Internet Architecture · Computer Science 2024-11-18 Sneihil Gopal , David Griffith , Richard A. Rouil , Chunmei Liu

O-RAN (Open-Radio Access Network) offers a flexible, open architecture for next-generation wireless networks. Network slicing within O-RAN allows network operators to create customized virtual networks, each tailored to meet the specific…

Networking and Internet Architecture · Computer Science 2025-04-25 Sihem Bakri , Indrakshi Dey , Harun Siljak , Marco Ruffini , Nicola Marchetti

The need for intelligent and efficient resource provisioning for the productive management of resources in real-world scenarios is growing with the evolution of telecommunications towards the 6G era. Technologies such as Open Radio Access…

Networking and Internet Architecture · Computer Science 2024-07-22 Vaishnavi Kasuluru , Luis Blanco , Engin Zeydan , Albert Bel , Angelos Antonopoulos

The Open Radio Access Network (RAN) and its embodiment through the O-RAN Alliance specifications are poised to revolutionize the telecom ecosystem. O-RAN promotes virtualized RANs where disaggregated components are connected via open…

Networking and Internet Architecture · Computer Science 2022-08-03 Michele Polese , Leonardo Bonati , Salvatore D'Oro , Stefano Basagni , Tommaso Melodia

Open Radio Access Network (O-RAN) architectures enable flexible, scalable, and cost-efficient mobile networks by disaggregating and virtualizing baseband functions. However, this flexibility introduces significant challenges for resource…

Networking and Internet Architecture · Computer Science 2025-09-16 Duc-Thinh Ngo , Kandaraj Piamrat , Ons Aouedi , Thomas Hassan , Philippe Raipin-Parvédy

Traditional RAN systems are closed and monolithic, stifling innovation. The openness and programmability enabled by Open Radio Access Network (O-RAN) are envisioned to revolutionize cellular networks with control-plane applications--xApps.…

Networking and Internet Architecture · Computer Science 2026-03-20 Xin Li , Shiming Yu , Leming Shen , Jianing Zhang , Yuanqing Zheng , Yaxiong Xie