Sidelink Positioning Reference Signal Configuration Parameters
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Solution Overview
Problem
The challenge is for terminal devices to obtain configuration parameters for sidelink positioning reference signals (SL PRS) effectively, as existing methods lack clarity on how these parameters are determined and communicated.
Innovation Solution
The proposed solution involves a method where terminal devices determine or receive configuration parameters for SL PRS, which include information such as frequency domain resources and SL PRS sequences, allowing for accurate transmission of sidelink positioning signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If terminal devices use existing positioning methods without sidelink-based positioning, then the positioning technology is simpler to implement, but positioning accuracy and reliability are insufficient
Solution Approach 1:
The patent segments the positioning system into network-side positioning reference signals (for network-based positioning) and sidelink positioning reference signals (for device-based positioning). This segmentation allows terminal devices to independently obtain and use SL PRS configuration parameters without requiring complex network coordination, thereby improving positioning accuracy while maintaining implementation simplicity at the device level.
2Reliability
If terminal devices obtain SL PRS configuration parameters through network signaling, then positioning reliability is improved, but the complexity of parameter acquisition increases
Solution Approach 1:
The patent applies preliminary action by having the network device pre-configure and broadcast SL PRS configuration parameters before the terminal device needs them. The terminal device simply reads these pre-available parameters from system information, eliminating the need for complex real-time parameter acquisition procedures while ensuring reliable positioning.
3Measurement precision
If the patent provides detailed configuration parameters for SL PRS, then positioning precision is improved, but the amount of information to be processed increases
Solution Approach 1:
The patent extracts only the essential configuration parameters needed for SL PRS (such as time frequency resources, sequence information, and measurement configuration) from the overall system configuration. By taking out only these critical parameters and presenting them in a streamlined manner, the patent achieves high positioning precision while minimizing the information processing load on terminal devices.
Data Source
AI summary
Provided are a sidelink positioning method, a terminal device, and a network device. The method includes: determining, by a terminal device, a configuration parameter of a first sidelink positioning reference signal SL PRS, where the first SL PRS occupies a part or all of an SL PRS resource, and the configuration parameter is used to indicate one or more of the following information: a frequency domain resource, used for transmitting the first SL PRS, in the SL PRS resource; or an SL PRS sequence of the first SL PRS.