提出可解释的5G无线链路故障预测框架,让模型更透明、更轻量。
An Explainable Failure Prediction Framework for Neural Networks in Radio Access Networks
- 结合特征剪枝与模型优化,提升神经网络可解释性。
- 实测显示气象数据贡献小,模型参数减少50%且F1分数更高。
- 适合需要模型透明度和高可扩展性的运营商部署场景。
随着5G网络向高速、低延迟和可靠通信演进,保障服务连续性愈发关键。毫米波(mmWave)频段虽能实现千兆速率,但易受环境影响,常引发无线链路失败(RLF)。已有预测模型利用无线与气象数据缓解此问题,但多数为黑箱,难以用于实际运维。本文提出一种融合可解释性特征剪枝与模型精炼的框架,可集成至GNN Transformer、LSTM等先进架构中,构建兼具高精度与可解释性的5G RLF预测模型。该框架揭示输入特征贡献度及决策逻辑,推动模型轻量化与可扩展。应用于真实世界数据集时发现,气象数据对预测贡献微弱,据此设计的简化模型参数减少50%,同时相比现有最优方案提升F1分数。本工作助力网络运营商评估与优化基于神经网络的预测模型,实现更高可解释性、可扩展性与性能。
原文摘要 · Abstract (English)
As 5G networks continue to evolve to deliver high speed, low latency, and reliable communications, ensuring uninterrupted service has become increasingly critical. While millimeter wave (mmWave) frequencies enable gigabit data rates, they are highly susceptible to environmental factors, often leading to radio link failures (RLF). Predictive models leveraging radio and weather data have been proposed to address this issue; however, many operate as black boxes, offering limited transparency for operational deployment. This work bridges that gap by introducing a framework that combines explainability based feature pruning with model refinement. Our framework can be integrated into state of the art predictors such as GNN Transformer and LSTM based architectures for RLF prediction, enabling the development of accurate and explainability guided models in 5G networks. It provides insights into the contribution of input features and the decision making logic of neural networks, leading to lighter and more scalable models. When applied to RLF prediction, our framework unveils that weather data contributes minimally to the forecast in extensive real world datasets, which informs the design of a leaner model with 50 percent fewer parameters and improved F1 scores with respect to the state of the art solution. Ultimately, this work empowers network providers to evaluate and refine their neural network based prediction models for better interpretability, scalability, and performance.
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