Multiple Sidelink Resource Windows for Accurate V2X Positioning
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Solution Overview
Problem
Existing wireless positioning technologies in 5G networks face challenges in efficiently utilizing sidelink resources for accurate positioning, particularly in vehicle-to-everything (V2X) communication scenarios, where resource allocation and coordination among UEs are not optimally managed.
Innovation Solution
The implementation of multiple selection windows for sidelink positioning, where a UE receives a configuration defining a set of resources within a resource pool for transmitting or receiving sidelink positioning reference signals (SL-PRS), allowing for optimized selection and use of resources for SL positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single selection window is used for sidelink positioning, then the configuration is simple, but the resource utilization efficiency and positioning accuracy are insufficient
Solution Approach 1:
The patent divides the selection window into multiple segments, each containing a set of resources for SL-PRS transmission. This segmentation allows the UE to select from multiple discrete resource sets within the window, improving positioning accuracy by enabling more precise resource selection while maintaining manageable configuration complexity through structured organization of the segmented resources.
2Productivity
If multiple selection windows are implemented, then resource utilization efficiency improves, but the configuration and processing complexity increases
Solution Approach 1:
The patent implements dynamic selection windows that can be configured with different numbers of selection windows and resource sets based on positioning requirements. This dynamic configuration allows the system to adapt to varying productivity needs and resource utilization requirements, improving efficiency when needed while managing complexity through flexible, on-demand configuration rather than fixed complex structures.
3Measurement precision
If more resources are allocated for positioning, then positioning precision improves, but the time required for resource selection and coordination increases
Solution Approach 1:
The patent performs preliminary configuration of multiple selection windows with predefined resource sets before the actual positioning operation. This preliminary action allows the UE to have pre-organized resource options ready for rapid selection, improving positioning precision through comprehensive resource allocation while reducing the time required during execution by avoiding real-time resource allocation decisions.
Data Source
AI summary
Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) may receive, from a configuration entity, such as an anchor UE, a first configuration, the first configuration defining a plurality of selection windows for sidelink (SL) positioning, each selection window defining a set of resources within a resource pool for positioning (RPP) for transmission or reception of at least one sidelink positioning reference signal (SL-PRS). The UE may perform SL positioning using one of the plurality of selection windows for SL positioning. This may include identifying, during a sensing window, candidate resources within the RPP, determining that a SL-PRS should be transmitted or received, identifying a selection window from among the plurality of selection windows, selecting, from among resources within the first selection window, one or more resources for transmitting or receiving an SL-PRS, and transmitting or receiving the SL-PRS on the selected resource(s).