Located UE Screening for Low-Overhead Sidelink Positioning
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Solution Overview
Problem
Existing wireless communication technologies face challenges in enhancing network positioning technologies to improve positioning accuracy in scenarios like internet of vehicles and autonomous driving, particularly in selecting suitable located UEs for sidelink positioning.
Innovation Solution
A communication method and apparatus that enables a first terminal to select a located UE for assisted positioning based on various information such as location, mobility status, line of sight, and sidelink positioning capabilities, with network control and assistance from a location management network element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple candidate located UEs are selected for assisted positioning, then positioning accuracy is improved, but system overhead and complexity increase
Solution Approach 1:
The patent applies parameter changes by evaluating candidate located UEs based on multiple parameters including location information, mobility status, line of sight information, serving network identifier, sidelink positioning capability, ranging reference signal period, and location accuracy. The first terminal device selects the optimal located UE by comparing these parameters, thereby achieving high positioning accuracy while managing system overhead through structured parameter evaluation.
2Measurement precision
If comprehensive information about candidate located UEs is collected and evaluated, then located UE selection accuracy is improved, but information processing overhead increases
Solution Approach 1:
The patent extracts only the necessary positioning-related information from candidate located UEs, including location information, mobility status, line of sight information, serving network identifier, sidelink positioning capability information, ranging reference signal period, and location accuracy. By extracting and evaluating only these specific parameters needed for positioning, the system achieves accurate located UE selection while minimizing unnecessary information processing overhead.
3Adaptability or versatility
If the first terminal device autonomously selects located UE, then selection flexibility is improved, but control and management difficulty increases
Solution Approach 1:
The patent implements feedback mechanisms where the first terminal device evaluates candidate located UEs based on received information and selects the optimal located UE autonomously. The terminal device can request additional information from candidate located UEs and makes informed selection decisions based on predefined criteria including location accuracy, mobility status, and line of sight conditions, thereby achieving flexible autonomous selection while maintaining manageable control through structured evaluation protocols.
Data Source
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AI summary
Embodiments of this application provide a communication method and a communication apparatus. The communication method includes: A first terminal obtains information about one or more candidate located UEs; and the first terminal determines, from the one or more candidate located UEs based on the information about the one or more candidate located UEs, a located UE used to assist in positioning the first terminal. Therefore, the located UE used to assist in positioning can be more properly selected based on various information about the candidate located UE.