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AI-driven Wireless Positioning: Fundamentals, Standards, State-of-the-art, and Challenges

Created by
  • Haebom

Author

Guangjin Pan, Yuan Gao, Yilin Gao, Wenjun Yu, Zhiyong Zhong, Xiaoyu Yang, Xinyu Guo, Shugong Xu

Outline

This paper presents a comprehensive survey of artificial intelligence (AI)-based cellular positioning technologies. It highlights the importance of wireless positioning technologies and the potential of AI utilization. It examines the development of AI/machine learning (ML)-based cellular positioning technologies based on the requirements and capabilities defined in the 3GPP standards. It analyzes the evolution of the 3GPP positioning standard and examines current and future standard versions, focusing on AI/ML integration. It categorizes and summarizes state-of-the-art (SOTA) research into two main categories: AI/ML-assisted positioning and direct AI/ML-based positioning. The former includes LOS/NLOS detection, TOA/TDOA estimation, and angle estimation, while the latter encompasses fingerprinting, knowledge-assisted learning, and channel charting. Representative public datasets are reviewed and the performance of AI-based positioning algorithms is evaluated using these datasets. Finally, the challenges and opportunities for AI-based wireless positioning are summarized.

Takeaways, Limitations

Takeaways:
It comprehensively presents the current status and future prospects of AI/ML-based cellular location estimation technology.
The possibility of industrial use has been increased through linkage with 3GPP standards.
We compare and analyze the pros and cons of various AI/ML techniques and verify their practicality through performance evaluation.
We present AI/ML application cases for various location estimation techniques, such as LOS/NLOS detection and TOA/TDOA estimation.
Limitations:
The performance evaluation presented in the paper may be limited to a specific dataset, and generalization performance in real-world environments requires further verification.
There is a lack of discussion about the explainability and trustworthiness of AI/ML models.
Continuous updates on new AI/ML technology advancements are needed.
There is a lack of analysis of performance differences across different hardware platforms and communication environments.
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