Sidelink positioning reference signal transmission for wireless communications
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Solution Overview
Problem
In sidelink wireless communication, out-of-coverage user devices sharing the same pre-defined positioning reference signal (PRS) configuration can cause resource conflicts and interference issues.
Innovation Solution
User devices determine and transmit periodic sidelink positioning reference signals (SL-PRS) based on configured SL-PRS settings, allowing for coordinated resource allocation and interference management among out-of-coverage devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If out-of-coverage user devices share the same pre-defined positioning reference signal (PRS) configuration, then sidelink positioning can be enabled in out-of-coverage scenarios, but resource conflicts and interference issues occur
Solution Approach 1:
The patent applies local quality by allowing each out-of-coverage user device to determine and use its own device-specific SL-PRS configuration parameters (such as different time offsets, frequency offsets, or resource allocations) while still operating without network coverage. This differentiation at the local device level enables multiple devices to perform sidelink positioning simultaneously without causing resource conflicts or interference, while maintaining the overall capability for out-of-coverage positioning.
2Object-affected harmful factors
If device-specific SL-PRS configuration is implemented, then resource conflicts and interference are minimized, but device complexity increases
Solution Approach 1:
The patent implements self-service by enabling user devices to autonomously determine their own SL-PRS configuration parameters without requiring network coordination or complex centralized management. Each device independently selects its configuration based on local conditions and pre-defined rules, which simplifies the overall system architecture while still achieving device-specific configurations that avoid resource conflicts and interference.
Data Source
AI summary
This document generally relates to wireless communication that includes: a user device that determines a sidelink positioning reference signal (SL-PRS) configuration, and transmits a periodic SL-PRS according to the SL-PRS configuration. Additionally, a user device receives a SL-PRS, and performing at least one measurement based on the periodic SL-PRS.