Sidelink UE Selection for Accurate Assisted Positioning
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Solution Overview
Problem
Existing positioning technologies face challenges in accurately selecting located UEs for assisted positioning, which affects the overall accuracy of network positioning in scenarios like internet of vehicles and autonomous driving.
Innovation Solution
A communication method that involves a first terminal determining a located UE based on various information such as location, mobility status, line of sight, and sidelink positioning capability to enhance the selection process, with network elements providing additional control and assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional positioning methods are used without comprehensive candidate evaluation, then the positioning process is simple, but the positioning accuracy is insufficient
Solution Approach 1:
The patent applies preliminary action by having the first terminal obtain and evaluate information about candidate located UEs before the actual positioning process. The terminal collects location information, mobility status, line of sight information, and positioning capability information in advance, then determines the optimal located UE based on this pre-evaluated data. This preliminary evaluation ensures positioning accuracy while managing complexity through structured advance preparation.
2Measurement precision
If multiple candidate located UEs are evaluated with comprehensive information, then the positioning accuracy improves, but the information processing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the candidate located UE evaluation into distinct information categories: location information, mobility status, line of sight information, and positioning capability information. Each category is evaluated separately, allowing the terminal to systematically process multiple aspects of candidate suitability without being overwhelmed by the overall complexity. This segmented approach enables comprehensive evaluation while maintaining manageable processing structure.
3Adaptability or versatility
If the terminal autonomously selects located UE without network assistance, then the selection flexibility is high, but the selection reliability may be insufficient
Solution Approach 1:
The patent applies the intermediary principle by introducing the network as a mediating entity in the located UE selection process. The network can provide assistance information about candidate located UEs, validate terminal selections, or directly determine the located UE based on network-wide knowledge. This intermediary role enhances selection reliability through network oversight while preserving flexibility when the terminal autonomously makes decisions based on locally available information.
Data Source
AI summary
Embodiments of this application provide example communication methods and communication apparatuses. One example communication method includes obtaining, by a first terminal, information about one or more candidate located user equipments (UEs). The first terminal determines, from the one or more candidate located UEs and based on the information about the one or more candidate located UEs, a located UE used to assist in positioning the first terminal. The information about the candidate located UE can include at least one of location information, a mobility status, line of sight information, a serving network identifier of the candidate located UE, sidelink positioning capability information, a period of a ranging reference signal, information indicating whether sidelink positioning calculation is supported, or location accuracy of the candidate located UE.