SL-PRS Configuration Switching for Reliable Sensing Measurement
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Solution Overview
Problem
Mobile terminals in wireless communication systems face challenges in maintaining SL-PRS detection due to signal attenuation when the movement distance exceeds a predetermined threshold, leading to ineffective sensing measurements.
Innovation Solution
Implementing a method and apparatus that allow a terminal to determine and perform sensing measurements using multiple SL-PRS configurations associated with different areas or time windows, reducing the need for network interaction and latency by pre-configuring association information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a terminal uses a single SL-PRS configuration for sensing measurement, then the configuration and measurement process is simple, but the terminal cannot perform effective sensing when moving beyond a predetermined distance due to signal attenuation
Solution Approach 1:
The patent divides the sensing measurement process into multiple segments by configuring multiple SL-PRS configurations, each associated with different association information (areas or time windows). The terminal segments the measurement process by selecting appropriate SL-PRS configurations based on current location or time, ensuring continuous effective sensing across different movement ranges while maintaining manageable complexity through structured segmentation.
Solution Approach 2:
The patent implements dynamic SL-PRS configuration selection where the terminal adapts its sensing measurements by switching between different SL-PRS configurations based on dynamic conditions such as current area or time window. This dynamic approach ensures the terminal maintains effective sensing measurement reliability as it moves through different regions or time periods, rather than relying on a static single configuration.
2Measurement precision
If the terminal frequently requests SL-PRS configurations from the network, then the sensing measurement accuracy is maintained, but the signaling interactions and latency increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple SL-PRS configurations with different association information (areas or time windows) before the terminal needs to perform sensing measurements. The network device provides the terminal with a set of SL-PRS configurations in advance, allowing the terminal to autonomously select the appropriate configuration based on current conditions without frequent network requests, thereby reducing signaling latency while maintaining measurement precision.
Solution Approach 2:
The terminal performs self-service by autonomously selecting and using appropriate SL-PRS configurations from the pre-configured set based on its current area or time window without requiring continuous network interaction. This self-service mechanism enables the terminal to maintain accurate sensing measurements independently, reducing dependency on frequent network requests and minimizing signaling latency.
3Adaptability or versatility
If the terminal uses multiple SL-PRS configurations for different areas or time windows, then sensing measurement effectiveness is maintained across movements, but the configuration management complexity increases
Solution Approach 1:
The patent applies local quality by associating different SL-PRS configurations with specific local conditions such as particular areas or time windows. Each SL-PRS configuration is optimized for its specific local context, allowing the terminal to maintain high adaptability in sensing measurements across different locations and times. The configuration management complexity is reduced by organizing configurations according to their local applicability, making selection and management more systematic.
Data Source
AI summary
Provided is a method for sensing measurement, performed by a first terminal. The method includes: determining a first sidelink positioning reference signal (SL-PRS) associated with first association information, wherein at least two pieces of association information are associated with different SL-PRS configurations, and each of the at least two pieces of association information includes at least one of an area or a time window, and performing sensing measurement via the first SL-PRS based on the first association information.