Dynamic Positioning Reference Signal Transmission in Sidelink
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Solution Overview
Problem
Existing wireless communication systems for vehicle positioning in sidelink communications do not efficiently accommodate varying speeds of mobile user equipment (UEs), leading to suboptimal resource allocation and positioning accuracy.
Innovation Solution
A method for user equipment in sidelink communication that involves obtaining configuration information for resource periods, determining the period of positioning reference signals, and requesting a change in period based on comparisons with predetermined periods or requests from other UEs, thereby optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed period for positioning reference signals is used, then resource allocation is simplified, but positioning accuracy deteriorates for mobile UEs with varying speeds
Solution Approach 1:
The patent implements dynamic adjustment of positioning reference signal periods by allowing UEs to request period changes based on their speed requirements. The network configures different periods from a set of predefined values, transforming the static resource allocation into a dynamic system that adapts to UE mobility conditions, thereby resolving the contradiction between allocation simplicity and positioning accuracy.
Solution Approach 2:
The patent changes the time period parameter of positioning reference signals based on UE speed requirements. By providing a set of configurable period values and allowing UE-specific adjustments, the system optimizes positioning accuracy for different mobility scenarios while maintaining manageable resource allocation through predefined options.
2Productivity
If the period of positioning reference signals is increased, then resource efficiency is improved, but positioning accuracy for high-speed UEs deteriorates
Solution Approach 1:
The patent applies local quality by assigning different positioning reference signal periods to different UEs based on their individual speed requirements. Fast-moving UEs receive shorter periods for accurate positioning, while slow-moving UEs use longer periods for resource efficiency. This UE-specific customization resolves the contradiction between overall resource efficiency and individual positioning accuracy.
Solution Approach 2:
The system dynamically selects appropriate signal periods based on UE mobility conditions, allowing resource efficiency to be optimized for each UE's specific needs rather than using a one-size-fits-all approach.
3Measurement precision
If positioning reference signals are transmitted frequently, then positioning accuracy is improved, but resource consumption increases
Solution Approach 1:
The patent optimizes the balance between positioning accuracy and resource consumption by configuring the signal period parameter based on UE speed. This parameter adjustment ensures that signals are transmitted frequently enough for accurate positioning of mobile UEs while avoiding excessive resource consumption, achieving an optimal trade-off tailored to each UE's mobility characteristics.
Data Source
AI summary
A method for a user equipment in a sidelink communication. The method includes: obtaining, by the user equipment, configuration information that defines a set of resource periods for obtaining one or more positioning reference signals from one or more anchor devices; determining, by the user equipment, a period of the one or more positioning reference signals; determining, by the user equipment, whether to transmit to the one or more anchor devices, a request to change the period of the one or more positioning reference signals based on a comparison of the determined period of the one or more positioning reference signals with at least one of: one or more predetermined periods or a period requested by one or more other user equipment; and transmitting, by the user equipment, based on the determining whether to transmit, the request to change the period of the one or more positioning reference signals.