RT Journal Article T1 A unified service-based capability exposure framework for closed-loop network automation A1 Gramaglia, Marco A1 Kajo, Marton A1 Mannweiler, Christian A1 Bulakci, Ă–mer A1 Wei, Qing AB The ongoing quest for the tight integration of network operation and the network service provisioning initiated with the introduction of 5G often clashes with the capacity of current network architectures to provide means for such integration. Owing to the traditional design of mobile networks, which barely required a tight interaction, network elements offer capabilities for their continuous optimization just within their domain (eg, access, or core), allowing for a "silo-style" automation that falls short when aiming at closed-loop automation that embraces all the actors involved in the network, from network functions up to the service-provider network functions. To this end, in this article, we make the case for the network-wide capability exposure framework for closed-loop automation by (i) defining the different entities that shall expose capabilities, and (ii) discussing why the state of the art solutions are not enough to support this vision. Our proposed architecture, which relies on registration and discovery, and exposure functions, allows for enhanced use cases that are currently not possible with state of the art solution. We prove the feasibility of our solution by implementing it in a real-world testbed, employing Artificial Intelligence algorithms to close the loop for the management of the radio access network. PB Wiley SN 2161-5748 YR 2022 FD 2022-11-01 LK https://hdl.handle.net/10016/38433 UL https://hdl.handle.net/10016/38433 LA eng NO Part of this work was performed in the context of the H2020 5G-MoNArch project (grant agreement no. 761445). The work of Marco Gramaglia has been partially funded by the H2020 5G-TOURS project (grant agreement no. 856950), and by the Spanish Ministry of Economic Affairs and Digital Transformation and the European Union-NextGenerationEU through the UNICO 5G I+D projects 6G-CLARION-NFD, 6G-CLARION-OR, 6G-CLARION-SI, and 6G-CLARION-OE. DS e-Archivo RD 17 jul. 2024