PRS Resource Grouping for Positioning Measurement Overhead Reduction
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Solution Overview
Problem
Current systems for Positioning Reference Signals (PRS) transmission and reporting in FR2 and beyond face challenges in adapting dynamically to varying positioning accuracy requirements, leading to increased overhead in both transmission and reporting, especially when a large number of PRS resources are configured, which is not necessary for lower accuracy needs.
Innovation Solution
The proposed solution involves grouping PRS resources, allowing a User Equipment (UE) to receive all PRS transmissions from multiple Tx beams on the same Rx beam and generate a single positioning measurement report for a group of PRS resources, reducing transmission and reporting overhead by selectively transmitting and repeating PRS on a subset of resources based on accuracy requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large number of PRS resources are configured to meet high positioning accuracy requirements, then positioning precision is improved, but transmission and reporting overhead increases
Solution Approach 1:
The patent segments PRS resources into multiple groups, where each group can be independently activated based on positioning accuracy requirements. Instead of configuring and transmitting all PRS resources simultaneously, the system divides them into manageable groups that can be selectively activated, reducing overhead while maintaining the capability to achieve high accuracy when needed.
Solution Approach 2:
The patent implements dynamic activation of PRS resource groups based on positioning accuracy requirements. The system can adaptively enable or disable specific groups of PRS resources depending on the current positioning needs, allowing it to optimize between accuracy and overhead dynamically rather than using a static configuration.
2Measurement precision
If multiple PRS resources are transmitted to ensure positioning accuracy, then positioning precision is improved, but resource usage efficiency decreases
Solution Approach 1:
By segmenting PRS resources into groups, the system can activate only the necessary groups for the current positioning task, avoiding transmission of unnecessary PRS resources and improving resource usage efficiency while maintaining positioning accuracy.
Solution Approach 2:
The system changes the activation state parameter of PRS resource groups based on positioning requirements, enabling or disabling groups as needed. This parameter change allows the system to optimize resource usage by transmitting only the minimum necessary PRS resources to achieve the required positioning accuracy.
3Quantity of substance
If PRS resources are grouped and selectively activated, then transmission overhead is reduced, but adaptability to varying accuracy requirements may be limited
Solution Approach 1:
The dynamic activation mechanism allows the system to adapt to varying accuracy requirements by selectively enabling or disabling PRS resource groups based on current positioning needs, maintaining high adaptability while reducing overhead.
Solution Approach 2:
Each PRS resource group is designed to be universally applicable for different positioning scenarios. The grouping structure allows any combination of groups to be activated depending on the required accuracy level, making the system versatile and adaptable to various positioning requirements while maintaining low overhead when high accuracy is not needed.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for receiving Positioning Reference Signals (“PRS”) and generating a positioning measurement report. One apparatus (800) includes a processor (805) and a transceiver (825) that receives a plurality of PRS transmission from at least one base unit, each PRS being transmitted using a specific transmit beam. The processor (805) generates single positioning measurement report that combines measurement instances for the received plurality of PRS. Via the transceiver (825), the processor (805) transmits the single positioning measurement report to a location management function (“LMF”) for UE-assisted positioning.