Sidelink Positioning Reference Signal Resource Configuration
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Solution Overview
Problem
Existing technologies lack a defined scheme for configuring the transmission resources for a Sidelink Positioning Reference Signal (S-PRS) in 5G NR V2X systems, which is essential for relative positioning between vehicles.
Innovation Solution
A method for configuring transmission resources for S-PRS, where the S-PRS resource set is transmitted with preconfigured or signaling-configured parameters such as offset amounts, quantity of resources, and time intervals, allowing User Equipment (UE) to obtain PRS resource information with reduced signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple S-PRS beams are transmitted in beam scanning mode for FR2, then positioning accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent segments the S-PRS resource configuration into two parts: a first parameter set that is reused from SSB configuration (avoiding redundant signaling) and a second parameter set that is specific to S-PRS. This segmentation allows the system to maintain positioning accuracy through multiple beams while reducing signaling overhead by leveraging the existing SSB configuration structure.
Solution Approach 2:
The patent makes the S-PRS resource configuration inherit from the SSB configuration, making the SSB configuration serve a dual purpose: both for synchronization signal transmission and for positioning reference signal configuration. This universality reduces the need for separate configuration signaling while maintaining the ability to support multiple beams for positioning accuracy.
2Adaptability or versatility
If a comprehensive configuration scheme for S-PRS resources is implemented, then positioning functionality is improved, but device complexity increases
Solution Approach 1:
The patent performs preliminary action by pre-configuring the first parameter set (common parameters) to be reused from SSB configuration before the actual S-PRS transmission. This preliminary reuse of configuration parameters simplifies the overall implementation complexity while maintaining comprehensive positioning functionality through the combination of reused and specific parameters.
3Adaptability or versatility
If beam scanning mode is used for FR2, then positioning capability is improved, but time consumption increases
Solution Approach 1:
The patent merges the configuration of S-PRS resources with the existing SSB configuration process. By reusing the first parameter set from SSB configuration, the system combines the synchronization signal transmission and positioning reference signal configuration into a unified process, reducing the additional time consumption that would otherwise be required for separate beam scanning configuration.
Data Source
AI summary
Methods for configuring and receiving a transmission resource for a PRS, and a UE are provided. The method for configuring the transmission resource for a PRS includes transmitting an S-PRS resource set. An S-PRS resource comprised in the S-PRS resource set is preconfigured, or configured through PC5 RRC signaling, or configured through base station RRC signaling.