Sidelink Positioning Resource Pool Segmentation in 5G
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Solution Overview
Problem
The increasing demand for accurate and rapid positioning in 5G wireless communication systems, particularly in sidelink configurations, is not adequately addressed by existing methods, which lack efficient techniques for implementing sidelink positioning using sidelink resources effectively.
Innovation Solution
A method and apparatus for initiating sidelink positioning in a 5G mobile communication system by receiving a SystemInformationBlock12 with a sl-PositioningAllowed field, utilizing a sidelink positioning resource pool, and configuring specific sidelink resources, including SL-ConfigCommonNR and SL_Pos_ConfigCommon, to enable sidelink positioning based on available resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sidelink positioning is implemented using existing methods, then positioning functionality is provided, but positioning accuracy and efficiency are insufficient for 5G requirements
Solution Approach 1:
The patent segments sidelink positioning resources into dedicated positioning resource pools (SL-PRS resource pools) separate from general sidelink communication resources. This segmentation allows optimized resource allocation specifically for positioning measurements, improving both accuracy through dedicated resources and efficiency through streamlined resource management without interfering with general sidelink communications.
Solution Approach 2:
The patent establishes positioning resource pools and configuration parameters (SL-PRS-ResourcePool, sl-pos-ResourcePoolID, timeResource, frequencyResource) in advance through system information or RRC signaling. This preliminary configuration enables terminals to immediately perform positioning measurements when needed, improving positioning efficiency while maintaining high accuracy through pre-optimized resource allocation.
2Adaptability or versatility
If sidelink positioning resources are allocated dynamically, then resource utilization improves, but system complexity increases
Solution Approach 1:
The patent creates positioning resource pools that can serve multiple positioning scenarios and terminal types universally. The same SL-PRS resource pool configuration can be used for different positioning methods (OTDOA, UTDOA, SL-TDOA) and different terminal capabilities, improving adaptability while reducing system complexity through standardized resource allocation rather than scenario-specific configurations.
Solution Approach 2:
The patent enables dynamic selection and activation of positioning resource pools based on current network conditions, terminal capabilities, and positioning requirements. Terminals can be configured with multiple resource pool IDs and select appropriate pools dynamically, providing adaptability to different scenarios while maintaining manageable system complexity through structured configuration parameters.
Data Source
AI summary
A Method and Apparatus for sidelink positioning is provided. The method includes receiving a SystemInformationBlock12 in a first cell, initiating sidelink positioning in the first cell if the SystemInformationBlock12 includes a sl-PositioningAllowed field set to a first value, and performing sidelink positioning based on a sidelink positioning resource pool or based on a specific sidelink resource pool. Configuration information of the specific sidelink resource pool includes sl_Pos_Allowed field set to a first value. The SystemInformationBlock12 includes a SL-ConfigCommonNR and a SL_Pos_ConfigCommon. The SL_Pos_ConfigCommon includes a one or more Sl_Pos_ResourcePool IEs.