Sidelink PRS Resource Pool Segmentation for Positioning Accuracy
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Solution Overview
Problem
Current communication systems face challenges in achieving accurate sidelink positioning, particularly in scenarios involving device-to-device communication, vehicle-to-everything (V2X), and out-of-coverage situations, where conventional methods struggle to provide reliable and precise positioning reference signals.
Innovation Solution
The method involves configuring sidelink positioning reference signal (PRS)-related information, including sidelink PRS signals, channels, or resource pools, to optimize resource allocation and minimize interference, allowing for more accurate positioning by separating PRS resource pools from sidelink communication resource pools and using dedicated signaling for PRS configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sidelink PRS uses shared resource pools with sidelink communication, then resource utilization is improved, but positioning accuracy deteriorates due to interference
Solution Approach 1:
The patent segments the resource pool into separate sidelink communication resource pools and sidelink positioning resource pools. This segmentation ensures that PRS transmissions and sidelink communications occur in dedicated, non-overlapping resources, eliminating mutual interference while maintaining efficient resource utilization through purpose-optimized allocation.
Solution Approach 2:
The patent applies local quality by configuring specific resource pool parameters (frequency range, time resources, bandwidth) tailored to positioning requirements. The sidelink positioning resource pool is locally optimized with dedicated bandwidth and frequency resources that match PRS signal characteristics, ensuring high positioning accuracy without compromising overall system resource efficiency.
2Measurement precision
If sidelink PRS uses dedicated resource pools, then positioning accuracy is improved, but resource allocation complexity increases
Solution Approach 1:
The patent implements a universal resource pool configuration mechanism that can serve both communication and positioning functions. The same resource pool structure and configuration methods are applied to both sidelink communication and sidelink positioning, reducing the need for separate complex management systems while ensuring positioning accuracy through dedicated positioning-optimized parameters.
Solution Approach 2:
The patent applies preliminary action by pre-configuring sidelink positioning resource pools with optimized parameters for PRS transmission before actual positioning operations. This includes pre-defining frequency ranges, time resources, and bandwidth allocations that are specifically suited for positioning, thereby simplifying real-time resource management while maintaining high positioning accuracy.
3Productivity
If sidelink PRS shares frequency resources with synchronization signals, then spectrum efficiency is improved, but positioning reliability deteriorates
Solution Approach 1:
The patent segments frequency resources by defining separate frequency ranges for sidelink positioning resource pools that exclude synchronization signal frequencies. This segmentation ensures that PRS transmissions and synchronization signals operate in dedicated frequency bands, eliminating mutual interference and ensuring positioning reliability while maintaining spectrum efficiency through optimized frequency allocation.
Data Source
AI summary
A method for sidelink communication and a communication device are provided. The method for sidelink communication includes configuring sidelink positioning reference signal (PRS)-related information. The sidelink PRS-related information includes at least one of: a sidelink PRS-related signal or a sidelink PRS-related channel; or a sidelink PRS resource pool.