V2X Positioning Reference Signal Timing Determination
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Solution Overview
Problem
The V2X system requires improved positioning accuracy for autonomous driving, which is hindered by the challenge of effectively sending positioning reference signals in vehicle-to-everything communication systems.
Innovation Solution
A signal transmission method and device that determine a specific time point for sending positioning reference signals, allowing terminals to assist each other in positioning, thereby enhancing positioning accuracy between vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning reference signals are transmitted without specific timing determination, then transmission simplicity is maintained, but positioning accuracy between terminals deteriorates
Solution Approach 1:
The patent applies parameter changes by determining specific transmission timing parameters for positioning reference signals. The terminal device changes the time parameter from arbitrary to specifically determined time points, which improves positioning accuracy while maintaining reasonable system complexity through standardized timing determination methods.
2Reliability
If positioning reference signals are sent at arbitrary times, then transmission flexibility is maintained, but positioning reliability deteriorates
Solution Approach 1:
The patent applies preliminary action by determining the transmission timing of positioning reference signals in advance. The terminal device pre-determines specific time points for signal transmission, which ensures positioning reliability through consistent timing while maintaining operational flexibility through standardized timing rules that don't require complex real-time decisions.
3Measurement precision
If no specific time point determination is implemented, then system complexity is reduced, but positioning precision between vehicles deteriorates
Solution Approach 1:
The patent implements parameter changes by establishing specific time point parameters for positioning reference signal transmission. This approach improves positioning precision between vehicles through deterministic timing while controlling system complexity by using standardized methods for time point determination rather than complex adaptive algorithms.
Data Source
AI summary
Embodiments of the application provide a signal transmission method and device and a terminal performing the signal transmission method. The method comprises: a first terminal determining a first time point, and the first terminal sending a first signal at the first time point, the first signal being a positioning reference signal, thereby assisting other terminals in positioning, and improving the positioning accuracy between the terminals.