Sidelink Positioning Resource Pool Configuration for Congestion Management
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G networks, face challenges in efficiently managing sidelink positioning reference signals (SL-PRS) due to channel busy ratios (CBR), which affect the transmission and reception of SL-PRS resources, impacting positioning accuracy and resource allocation.
Innovation Solution
A method and system for a user equipment (UE) to receive configurations for resource pools for SL-PRS, measure channel busy ratios, and transmit SL-PRS resources based on these measurements, optimizing transmission parameters to manage resource usage and improve positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If SL-PRS resources are transmitted frequently to improve positioning accuracy, then positioning precision is improved, but channel congestion increases and resource availability deteriorates
Solution Approach 1:
The patent implements dynamic adjustment of SL-PRS transmission parameters based on real-time CBR measurements. The transmitting UE adjusts transmission frequency, resource selection, and other parameters dynamically according to current channel conditions, allowing the system to optimize positioning accuracy while adapting to varying congestion levels.
Solution Approach 2:
The patent changes transmission parameters such as resource pool selection, transmission frequency, and resource allocation based on CBR thresholds. When CBR exceeds certain thresholds, the system modifies these parameters to reduce congestion while maintaining acceptable positioning performance.
2Productivity
If transmission parameters are adjusted dynamically to manage channel congestion, then resource allocation efficiency is improved, but system complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where UEs measure CBR and report channel conditions to the network. The network uses this feedback to adjust resource pool configurations and transmission parameters, creating a closed-loop system that optimizes resource allocation while distributing complexity between network control and UE execution.
Solution Approach 2:
The patent enables UEs to autonomously measure CBR and select appropriate resources from configured pools based on current channel conditions. This self-service approach allows UEs to adapt to congestion without requiring complex centralized control for every transmission decision.
3Adaptability or versatility
If multiple resource pools are configured for SL-PRS to improve resource availability, then resource flexibility is improved, but configuration complexity increases
Solution Approach 1:
The patent divides the available time-frequency resources into multiple separate resource pools, each with specific characteristics and CBR thresholds. This segmentation allows the system to select appropriate pools based on current conditions, providing flexibility while keeping each individual pool's configuration manageable.
Solution Approach 2:
The patent creates resource pools that can serve multiple purposes and adapt to different congestion scenarios. The same resource pool structure can be used for various SL-PRS transmission scenarios, and pools can be repurposed based on changing conditions, reducing the need for entirely separate configurations for each scenario.
Data Source
AI summary
Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) receives a configuration of one or more resource pools for positioning (RP-Ps) to use for transmission, reception, or both of sidelink positioning reference signals (SL-PRS), measures at least a first channel busy ratio (CBR) associated with a first RP-P of the one or more RP-Ps, and transmits, to at least a second UE, one or more SL-PRS resources in the first RP-P, wherein transmission parameters of the one or more SL-PRS resources are based on the first CBR associated with the first RP-P.