5G Core Fault Detection and Root Cause Analysis using Machine Learning and Generative AI

TL;DR

This paper introduces an AI/ML-based Fault Analysis Engine for 5G core networks that classifies network traffic errors and suggests fixes, reducing manual effort and improving fault detection accuracy.

Contribution

It presents a novel AI/ML-driven engine that classifies faults in 5G PCAP files and uses Generative AI to recommend corrective actions, enhancing network fault analysis.

Findings

High classification accuracy achieved on test datasets.

Significant reduction in manual analysis effort.

Effective fault explanation using domain-specific documents.

Abstract

With the advent of 5G networks and technologies, ensuring the integrity and performance of packet core traffic is paramount. During network analysis, test files such as Packet Capture (PCAP) files and log files will contain errors if present in the system that must be resolved for better overall network performance, such as connectivity strength and handover quality. Current methods require numerous person-hours to sort out testing results and find the faults. This paper presents a novel AI/ML-driven Fault Analysis (FA) Engine designed to classify successful and faulty frames in PCAP files, specifically within the 5G packet core. The FA engine analyses network traffic using natural language processing techniques to identify anomalies and inefficiencies, significantly reducing the effort time required and increasing efficiency. The FA Engine also suggests steps to fix the issue using Generative AI via a Large Language Model (LLM) trained on several 5G packet core documents. The engine explains the details of the error from the domain perspective using documents such as the 3GPP standards and user documents regarding the internal conditions of the tests. Test results on the ML models show high classification accuracy on the test dataset when trained with 80-20 splits for the successful and failed PCAP files. Future scopes include extending the AI engine to incorporate 4G network traffic and other forms of network data, such as log text files and multimodal systems.