Sidelink Control Information for Positioning Reference Signals
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing sidelink control information (SCI) for sidelink-positioning reference signals (SL-PRS), which affects network performance and user experience, especially in densely co-located device scenarios.
Innovation Solution
The proposed solution involves the use of SCI formats such as SCI-1 and SCI-2, which are specifically configured to carry SL-PRS information. These formats include various fields that provide source and destination IDs, positioning type session information, and PRS triggering details, allowing for efficient scheduling and transmission of SL-PRS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If SCI formats are used to carry SL-PRS information, then positioning accuracy is improved, but overhead is increased
Solution Approach 1:
The patent combines SL-PRS information with existing SCI formats (SCI-1 and SCI-2) that are used for sidelink communication scheduling. By merging positioning information into the existing SCI structure, the patent enables positioning functionality without requiring completely separate signaling channels, thereby improving positioning accuracy while controlling overhead through shared resource utilization.
Solution Approach 2:
The SCI formats are designed to serve multiple functions: traditional sidelink communication scheduling and SL-PRS positioning information carrying. This multi-functionality allows the same signaling structure to support both communication and positioning operations, reducing overall system overhead while maintaining positioning accuracy through efficient resource utilization.
2Measurement precision
If multiple fields are included in SCI for SL-PRS information, then positioning accuracy is improved, but device complexity is increased
Solution Approach 1:
The patent segments SL-PRS information into multiple distinct fields within the SCI structure, including source ID, destination ID, positioning type session information, and PRS triggering details. This segmentation allows for organized, modular information storage that improves positioning accuracy through comprehensive data collection while managing device complexity through structured, field-based organization that facilitates efficient processing and interpretation.
Data Source
AI summary
This disclosure provides systems, methods, and devices for wireless communication that support sidelink control information (SCI). In a first aspect, a method of wireless communication includes receiving first SCI, the first SCI including a plurality of fields, and decoding at least one field of the plurality of fields based on a first higher layer parameter to determine sidelink-position reference signal (SL-PRS) information. Other aspects and features are also claimed and described.