Digital Twin-Enabled Domain Adaptation for Zero-Touch UAV Networks: Survey and Challenges

TL;DR

This paper surveys digital twin-assisted UAV network control techniques, emphasizing domain adaptation and AI/ML methods to improve automation, resilience, and generalization in wireless systems.

Contribution

It provides a comprehensive overview of emerging digital twin-based methods for fast, adaptable control of UAV networks, highlighting challenges and future research directions.

Findings

Digital twin techniques enable rapid adaptation in UAV networks.

Reinforcement learning improves control robustness.

Shared testing facilities facilitate system validation.

Abstract

In existing wireless networks, the control programs have been designed manually and for certain predefined scenarios. This process is complicated and error-prone, and the resulting control programs are not resilient to disruptive changes. Data-driven control based on Artificial Intelligence and Machine Learning (AI/ML) has been envisioned as a key technique to automate the modeling, optimization and control of complex wireless systems. However, existing AI/ML techniques rely on sufficient well-labeled data and may suffer from slow convergence and poor generalizability. In this article, focusing on digital twin-assisted wireless unmanned aerial vehicle (UAV) systems, we provide a survey of emerging techniques that can enable fast-converging data-driven control of wireless systems with enhanced generalization capability to new environments. These include SLAM-based sensing and network softwarization for digital twin construction, robust reinforcement learning and system identification for domain adaptation, and testing facility sharing and federation. The corresponding research opportunities are also discussed.