Sidelink Anchor UE Determination for Reliable Positioning Transmission
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Solution Overview
Problem
In sidelink communication systems, there is no effective method for determining an anchor UE for transmitting positioning-related information, leading to unreliable UE location determination and communication reliability issues.
Innovation Solution
A method for a first terminal to autonomously determine whether it can serve as an anchor UE by evaluating target parameters such as distance, RSRP, and included angles based on information received from target terminals, and adhering to set restriction conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If no scheme for determining anchor UE is implemented in sidelink communication, then the system complexity is reduced, but the reliability of positioning information transmission deteriorates
Solution Approach 1:
The terminal autonomously determines whether it can serve as an anchor UE by evaluating target parameters (distance, RSRP, included angles) against preset conditions, without requiring network side intervention. This self-service mechanism resolves the contradiction by enabling reliable anchor determination while maintaining system simplicity.
2Reliability
If terminal autonomously determines anchor UE status, then the reliability of sidelink communication is improved, but the device complexity increases
Solution Approach 1:
The autonomous determination process is segmented into distinct evaluation steps: measuring target parameters (distance, RSRP, included angles), comparing against preset conditions, and making determination decisions. This segmentation reduces device complexity by breaking down the complex determination process into manageable, modular operations.
Solution Approach 2:
The terminal performs partial evaluation by assessing only the necessary target parameters (distance, RSRP, included angles) rather than comprehensive system state analysis. This partial action approach achieves sufficient reliability for anchor determination while limiting the computational burden and device complexity.
3Area of stationary object
If multiple terminals transmit positioning-related information simultaneously, then the coverage area is expanded, but interference between terminals increases
Solution Approach 1:
The terminal performs preliminary evaluation of target parameters (distance, RSRP, included angles) before transmitting positioning information. By pre-assessing whether preset conditions are met, the system enables multiple terminals to transmit simultaneously only when interference conditions are satisfied, thus expanding coverage while controlling interference.
Solution Approach 2:
The system uses parameter-based control (distance thresholds, RSRP thresholds, included angle thresholds) to dynamically adjust transmission conditions. By changing transmission parameters based on evaluated target parameters, multiple terminals can expand coverage area while maintaining acceptable interference levels through parameter optimization.
Data Source
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AI summary
Provided are an anchor terminal determination method, an information sending method, a communication node, and a storage medium. The anchor terminal determination method includes receiving information sent by a target terminal, determining a target parameter according to the information sent by the target terminal, and determining that the first terminal is an anchor terminal in a case where the target parameter satisfies a set restriction condition.