General information
Organisation
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.
Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.
The CEA is established in ten centers spread throughout France
Reference
SL-DRT-26-0122
Direction
DRT
Thesis topic details
Category
Technological challenges
Thesis topics
AI-Driven Network Management with Large Language Models LLMs
Contract
Thèse
Job description
The increasing complexity of heterogeneous networks (satellite, 5G, IoT, TSN) requires an evolution in network management. Intent-Based Networking (IBN), while advanced, still faces challenges in unambiguously translating high-level intentions into technical configurations. This work proposes to overcome this limitation by leveraging Large Language Models (LLMs) as a cognitive interface for complete and reliable automation.
This thesis aims to design and develop an IBN-LLM framework to create the cognitive brain of a closed control loop on the top of an SDN architecture. The work will focus on three major challenges: 1) developing a reliable semantic translator from natural language to network configurations; 2) designing a deterministic Verification Engine (via simulations or digital twins) to prevent LLM 'hallucinations'; and 3) integrating real-time analysis capabilities (RAG) for Root Cause Analysis (RCA) and the proactive generation of optimization intents.
We anticipate the design of an IBN-LLM architecture integrated with SDN controllers, along with methodologies for the formal verification of configurations. The core contribution will be the creation of an LLM-based model capable of performing RCA and generating optimization intents in real-time. The validation of the approach will be ensured by a functional prototype (PoC), whose experimental evaluation will allow for the precise measurement of performance in terms of accuracy, latency, and resilience.
University / doctoral school
Ecole Doctorale de l’Institut Polytechnique de Paris (IP Paris)
IP. Paris
Thesis topic location
Site
Saclay
Requester
Position start date
01/02/2026
Person to be contacted by the applicant
BEN HADJ SAID Siwar
siwar.benhadjsaid@cea.fr
CEA
DRT/DIASI//LSC
CEA Saclay - NanoINNOV
DRT/LIST/DIASI/LSC
Bat 862 PC 173
91191 Gif sur Yvette Cedex
01 69 08 29 39
Tutor / Responsible thesis director
SARKISS Mireille
Telecom SudParis
Télécom Sud Paris
9 rue Fourier 91000 Evry
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