Scientific Publication

FedCCL: Federated Clustered Continual Learning Framework for Privacy-focused Energy Forecasting

Michael A. Helcig & Stefan Nastic
IEEE International Conference On Fog and Edge Computing (ICFEC 2025)

Towards Cloud-Native RAN for 6G NTN-Based Connectivity in Aviation

Babak Mafakheri, Farzad Veisi, Mohamed Hafidi, Tomaso de Cola, Leonardo Goratti
The IEEE Future Networks World Forum (FNWF) 2025
 

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A Novel Compound AI Model for 6G Networks in 3D Continuum

Milos Gravara, Andrija Stanisic, Stefan Nastic
EuCNC & 6G Summit 2025

Non-Terrestrial Disaggregated RAN: Prospective Architectures and Performance Insights

Farzad Veisi , Pedro B Velloso, Tomaso de Cola, Babak Mafakheri , Stefano Secci 
IEEE Network Year : 2025

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Paving the Way Towards an NTN-Native 6G Ecosystem: the NexaSphere Approach

Tomaso de Cola, Babak Mafakheri
EuCNC 2025. Terrestrial and non-terrestrial networks unification towards 6G Workshop

Performance Isolation for Serverless Functions

Gajanin, Rastko, Cynthia Marcelino, and Stefan Nastic
IEEE Transactions on Services Computing 18, no. 6 (Nov.–Dec. 2025)
 

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Roadrunner: Accelerating Data Delivery to WebAssembly-based Serverless Functions

Marcelino, C., Pusztai, T., & Nastic, S
24th International Middleware Conference (Middleware 25)
 

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Cosmos: A Cost Model for Serverless Workflows in the 3D Compute Continuum

Marcelino, Cynthia, Sebastian Gollhofer-Berger, Thomas W. Pusztai, and Stefan Nastic
The IEEE International Conference on Smart Computing (SMARTCOMP) 2025
 

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Gaia: Hybrid Hardware Acceleration for Serverless AI in the 3D Compute Continuum

Reisecker, M., Marcelino, C., Pusztai, T., & Nastic, S.
The IEEE/ACM 12th International Conference on Big Data Computing, Applications and Technologies 2025
 

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Databelt: A continuous data path for serverless workflows in the 3D compute continuum

Marcelino, Cynthia, Leonard Guelmino, Thomas Pusztai, and Stefan Nastic.
Journal of Systems Architecture (2025)
 

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Stardust: A Scalable and Extensible Simulator for the 3D Continuum

Pusztai, Thomas W., Jan Hisberger, Cynthia Marcelino, and Stefan Nastic.
IEEE International Conference on Edge Computing and Communications (EDGE) 2025

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Lumos: Performance Characterization of WebAssembly as a Serverless Runtime in the Edge-Cloud Continuum

Marcelino, Cynthia, Noah Krennmair, Thomas W. Pusztai, and Stefan Nastic.
The 15th International Conference on the Internet of Things (IoT ’25)

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O-RAN Integrated Space-Terrestrial Networks: A Multi-Connectivity Strategy Analysis

Stefano Taborelli , Farzad Veisi Goshtasb, Pedro Braconnot Velloso, Stefano Secci
IEEE INFOCOM 2026, RI-NTNs Workshop

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ProbSelect: Stochastic Client Selection for GPU-Accelerated Compute Devices in the 3D Continuum

Andrija Stanisic, Stefan Nastic
The 3rd IEEE International Conference on Federated Learning Technologies and Applications (FLTA 2025)

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Currus — A Compound AI Approach to Distributed Vehicle Trajectory Reconstruction in the Edge-Cloud

Authors: Manuel Can Kaya, Thomas W. Pusztai, Andrija Stanisic, Stefan Nastic
Conference: Proceedings of the 15th International Conference on the Internet of Things (IoT 2025), pp. 254–262, ACM

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Compass: Optimizing Compound AI Workflows for Dynamic Adaptation

Authors: Milos Gravara, Juan Luis Herrera, Stefan Nastic
Conference: The 26th International Symposium on Cluster, Cloud and Internet Computing (CCGrid 2026), May 2026

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Millimeter-Wave Antennas for LEO Satellite Systems: Technologies and Trade-Offs

Authors: Alexandros Korres, Charalabos Skianis, Emmanouil Kafetzakis, Ioannis Giannoulakis
Conference: 2026 EuCNC & 6G Summit, May 2026

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Energy-Efficient Uplink-Downlink Decoupling for 6G TN-NTN Multi-Connectivity

Authors: Farzad Veisi, Pedro B. Velloso, Babak Mafakheri, Stefano Secci
Conference: IEEE International Conference on Communications (ICC) 2026, Glasgow, UK, 24–28 May 2026

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PLAIground: SLO-Driven Runtime Model Selection for Compound AI Systems in the Edge-Cloud-Space Continuum

Authors: Milos Gravara, Cynthia Marcelino, Andrija Stanisic, Stefan Nastic
Conference: Eleventh IEEE International Workshop on Smart Service Systems (SmartSys 2026), co-located with IEEE SMARTCOMP 2026, June 2026

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Design Methodology and Performance Trade-offs Management for Distributed and Compound AI Systems

Authors: Milos Gravara, Andrija Stanisic, Stefan Nastic
Conference: 2026 IEEE World Congress on SERVICES (SERVICES 2026), July 2026

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Co-funded by the European Union

NexaSphere project has received funding from the Smart Networks and Services Joint Undertaking (SNS JU) under the European Union’sHorizon Europe research and innovation program under Grant Agreement No 101192912. Views and opinions expressed are, however, those of the author(s) only and do not necessarily reflect those of the European Union or 6GSNS JU. Neither the European Union nor the granting authority can be held responsible for them.

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