Enhancing 5G Radio Planning with Graph Representations and Deep Learning

TL;DR

This paper presents a novel deep learning approach using graph neural networks to improve 5G radio planning by leveraging existing infrastructure data, achieving high accuracy in performance prediction and robust generalization across areas.

Contribution

It introduces a graph-based deep learning method for 5G radio planning that effectively models infrastructure data and demonstrates strong predictive accuracy and generalization capabilities.

Findings

Achieves MAPE <17% in area-specific predictions

Achieves MAPE <19% in cross-area predictions

Demonstrates robustness and potential for real-world 5G deployment

Abstract

The roll out of new mobile network generations poses hard challenges due to various factors such as cost-benefit tradeoffs, existing infrastructure, and new technology aspects. In particular, one of the main challenges for the 5G deployment lies in optimal 5G radio coverage while accounting for diverse service performance metrics. This paper introduces a Deep Learning-based approach to assist in 5G radio planning by utilizing data from previous-generation cells. Our solution relies on a custom graph representation to leverage the information available from existing cells, and employs a Graph Neural Network (GNN) model to process such data efficiently. In our evaluation, we test its potential to model the transition from 4G to 5G NSA using real-world data from a UK mobile network operator. The experimental results show that our solution achieves high accuracy in predicting key performance indicators in new 5G cells, with a Mean Absolute Percentage Error (MAPE)~<17\% when evaluated on samples from the same area where it was trained. Moreover, we test its generalization capability over various geographical areas not included in the training, achieving a MAPE~<19\%. This suggests beneficial properties for achieving robust solutions applicable to 5G planning in new areas without the need of retraining.