Resource-Aware Hierarchical Federated Learning in Wireless Video Caching Networks

• URL: http://arxiv.org/abs/2402.04216v3
• Date: Sat, 26 Oct 2024 22:19:04 GMT
• Title: Resource-Aware Hierarchical Federated Learning in Wireless Video Caching Networks
• Authors: Md Ferdous Pervej, Andreas F. Molisch,
• Abstract summary: Backhaul traffic congestion caused by the video traffic of a few popular files can be alleviated by storing the to-be-requested content. We propose a novel resource-aware hierarchical federated learning (RawHFL) solution for predicting user's future content requests.
• Score: 24.664469755746463
• License:
• Abstract: Backhaul traffic congestion caused by the video traffic of a few popular files can be alleviated by storing the to-be-requested content at various levels in wireless video caching networks. Typically, content service providers (CSPs) own the content, and the users request their preferred content from the CSPs using their (wireless) internet service providers (ISPs). As these parties do not reveal their private information and business secrets, traditional techniques may not be readily used to predict the dynamic changes in users' future demands. Motivated by this, we propose a novel resource-aware hierarchical federated learning (RawHFL) solution for predicting user's future content requests. A practical data acquisition technique is used that allows the user to update its local training dataset based on its requested content. Besides, since networking and other computational resources are limited, considering that only a subset of the users participate in the model training, we derive the convergence bound of the proposed algorithm. Based on this bound, we minimize a weighted utility function for jointly configuring the controllable parameters to train the RawHFL energy efficiently under practical resource constraints. Our extensive simulation results validate the proposed algorithm's superiority, in terms of test accuracy and energy cost, over existing baselines.

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