Sidelink PRS Resource Pool Configuration for Accurate Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently utilizing sidelink (SL) positioning reference signals (PRS) for accurate positioning measurements, particularly in scenarios involving direct device-to-device communication outside traditional network coverage.
Innovation Solution
The implementation of a user equipment (UE) configured to receive and transmit SL PRS configuration information, determine resources from a SL resource pool, and perform positioning measurements, enabling effective SL PRS transmission and reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If SL PRS transmission is implemented in device-to-device communication scenarios, then positioning accuracy is improved, but system complexity increases due to resource allocation and configuration management
Solution Approach 1:
The patent segments the SL PRS transmission system into distinct functional components: resource pool configuration, control information signaling, and positioning measurement processing. This segmentation allows each component to be optimized independently, managing system complexity while maintaining positioning accuracy.
Solution Approach 2:
The patent implements preliminary configuration of SL resource pools and control information parameters before actual positioning measurements. By pre-defining resource allocations and signaling requirements, the system reduces real-time processing complexity while ensuring accurate positioning measurements can be performed.
2Productivity
If SL resource pool is allocated for both SL PRS and control information, then resource utilization efficiency is improved, but interference between signals increases
Solution Approach 1:
The patent applies local quality by assigning different resource pool characteristics to SL PRS and control information. Specific time-frequency resources within the pool are optimized for reference signal transmission with higher power and repetition, while other resources are optimized for control information with error correction coding, thereby reducing interference while maintaining efficient resource utilization.
Solution Approach 2:
The patent implements periodic transmission patterns where SL PRS and control information are alternately transmitted in structured time intervals. This periodic separation allows the system to efficiently utilize shared resources while minimizing signal interference through temporal distribution.
3Measurement precision
If configuration information for SL resource pool is transmitted to UE, then positioning measurement capability is improved, but signaling overhead increases
Solution Approach 1:
The patent designs the SL resource pool configuration information to serve multiple functions simultaneously: it defines resources for SL PRS transmission, allocates control information channels, and establishes measurement timing. This multi-functionality reduces the total signaling overhead while maintaining comprehensive positioning measurement capability.
Solution Approach 2:
The patent merges several configuration parameters into unified resource pool definitions that are transmitted to the UE. By combining resource allocation, timing, and measurement configuration into integrated signaling messages, the system reduces redundant overhead while ensuring all necessary information for accurate positioning measurements is provided.
Data Source
AI summary
Methods and apparatuses for sidelink (SL) positioning reference signals (PRSs) in a wireless communication system. A method of operating a user equipment (UE) includes receiving configuration information for a SL resource pool. The SL resource pool is used for a SL PRS and control information associated with the SL PRS. The method further includes determining, based at least on the configuration information, resources for the SL PRS from the SL resource pool; transmitting the control information associated with the SL PRS; and transmitting the SL PRS on the determined resources.