@inproceedings{d635b6bd7f7c4d0592ab3874a4c51110,
title = "X-GRL: An Empirical Assessment of Explainable GNN-DRL in B5G/6G Networks",
abstract = "The rapid development of artificial intelligence (AI) techniques has triggered a revolution in beyond fifth-generation (B5G) and upcoming sixth-generation (6G) mobile networks. Despite these advances, efficient resource allocation in dynamic and complex networks remains a major challenge. This paper presents an experimental implementation of deep reinforcement learning (DRL) enhanced with graph neural networks (GNNs) on a real 5G testbed. The method addresses the explainability of GNNs by evaluating the importance of each edge in determining the model's output. The custom sampling functions feed the data into the proposed GNN-driven Monte Carlo policy gradient (REINFORCE) agent to optimize the gNodeB (gNB) radio resources according to the specific traffic demands. The demo demonstrates real-time visualization of network parameters and superior performance compared to benchmarks.",
keywords = "AI/ML, B5G/6G, GNN-DRL, Resource Allocation, XAI",
author = "Farhad Rezazadeh and Sergio Barrachina-Munoz and Engin Zeydan and Houbing Song and Subbalakshmi, {K. P.} and Josep Mangues-Bafalluy",
note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 2023 IEEE Conference on Network Function Virtualization and Software Defined Networks, NFV-SDN 2023 ; Conference date: 07-11-2023 Through 09-11-2023",
year = "2023",
doi = "10.1109/NFV-SDN59219.2023.10329778",
language = "English",
series = "2023 IEEE Conference on Network Function Virtualization and Software Defined Networks, NFV-SDN 2023 - Proceedings",
pages = "172--174",
editor = "Fitzek, {Frank H.P.} and Larry Horner and Molka Gharbaoui and Giang Nguyen and Rentao Gu and Tobias Meuser",
booktitle = "2023 IEEE Conference on Network Function Virtualization and Software Defined Networks, NFV-SDN 2023 - Proceedings",
}