Location Privacy in B5G/6G: Systematization of Knowledge

TL;DR

This paper reviews location privacy challenges in B5G/6G networks, analyzing architectural risks, evaluating privacy-preserving mechanisms, and proposing innovative solutions like decentralized authentication and satellite-based methods.

Contribution

It offers a comprehensive systematization of knowledge on location privacy in B5G/6G, highlighting new mitigation strategies and future research directions.

Findings

Physical layer security is effective in privacy preservation.

Decentralized authentication enhances user privacy.

Satellite communications can improve location privacy.

Abstract

As we transition into the era of B5G/6G networks, the promise of seamless, high-speed connectivity brings unprecedented opportunities and challenges. Among the most critical concerns is the preservation of location privacy, given the enhanced precision and pervasive connectivity of these advanced networks. This paper systematically reviews the state of knowledge on location privacy in B5G/6G networks, highlighting the architectural advancements and infrastructural complexities that contribute to increased privacy risks. The urgency of studying these technologies is underscored by the rapid adoption of B5G/6G and the growing sophistication of location tracking methods. We evaluate current and emerging privacy-preserving mechanisms, exploring the implications of sophisticated tracking methods and the challenges posed by the complex network infrastructures. Our findings reveal the effectiveness of various mitigation strategies and emphasize the important role of physical layer security. Additionally, we propose innovative approaches, including decentralized authentication systems and the potential of satellite communications, to enhance location privacy. By addressing these challenges, this paper provides a comprehensive perspective on preserving user privacy in the rapidly evolving landscape of modern communication networks.