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Title	Energy-Efficient Federated Learning Training Optimization For Digital Twin Driven 6G Air-Ground Integrated Vehicular Networks
ID_Doc	23480
Authors	Tan C.; Yu P.; Qu Z.; Zhang L.; Li W.; Qiu X.; Guo S.
Year	2025
Published	IEEE Transactions on Intelligent Transportation Systems
DOI	http://dx.doi.org/10.1109/TITS.2025.3577308
Abstract	The rapid development of autonomous vehicles and smart city has led to an exponential increase in data generation within Intelligent Transportation Systems (ITS). However, comprehensive extraction and utilization of these data are severely hindered by communication and energy constraints, security and privacy concerns, vehicle mobility limitations, and spatial distribution challenges. Using 6G and Digital Twin (DT) technologies offers a promising solution to these problems. In this paper, we propose a DT-based model training architecture for vehicular networks and introduce Federated Learning (FL) to preserve data privacy. While distributed model training and parameter transmission introduce challenges in delay and energy consumption, which conflict with real-time service requirements in ITS. In addition, the quality of the data and the processing capability of each vehicle varies widely, which will affect the efficiency of data sharing and model accuracy. Therefore, it is vital to select appropriate training nodes and optimize resource allocation under the constraints of task delay and energy consumption. We formulate an optimization model to improve the selection of FL participating nodes and energy management strategies, aiming to maximize accuracy while minimizing energy consumption. We then develop a DT-assisted deep reinforcement learning (DRL) method. Experiments show that our scheme achieves higher training accuracy and energy efficiency compared to the benchmark. © 2000-2011 IEEE.
Author Keywords	6G; digital twin; edge computing; federated learning; IoV

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