Parent Child PRS Resource Set Configurations
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Solution Overview
Problem
Current 5G wireless communication systems face challenges in optimizing parent and child beam associations for enhanced spectral efficiency and reduced latency, particularly in configuring positioning reference signal (PRS) resource sets to support the increased data transfer speeds and connectivity demands of the New Radio (NR) standard.
Innovation Solution
A method involving the reception of parent PRS resource set configurations and child PRS resource set configurations by user equipment (UE) from a position estimation entity, with measurements and associations performed to determine activated child beams based on performance metrics, allowing for optimized beam associations within the same or different frequency layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If parent and child beam associations are configured for positioning reference signals, then spectral efficiency is improved, but device complexity increases due to multiple beam configurations and measurements
Solution Approach 1:
The patent segments the beam configuration into hierarchical levels: parent beams provide broad coverage while child beams provide focused measurements. This segmentation allows the system to manage complexity by dividing the beam management task into manageable layers, where parent beams reduce the search space and child beams perform detailed positioning measurements.
Solution Approach 2:
The patent applies preliminary action by having the UE perform measurements on parent beams first to identify promising directions before committing to detailed child beam measurements. This preliminary screening reduces the overall measurement complexity by eliminating unnecessary child beam measurements in directions with poor parent beam signals.
2Measurement precision
If multiple child beams are configured for each parent beam, then measurement precision is improved, but loss of time increases due to extensive measurement requirements
Solution Approach 1:
The patent uses parent beam measurements as a preliminary step to pre-screen directions before performing detailed child beam measurements. This preliminary action reduces the total number of child beam measurements needed, thereby reducing measurement time while maintaining positioning accuracy through selective detailed measurement of only the most promising beams.
Solution Approach 2:
The patent implements partial action by configuring and measuring only a subset of child beams rather than all possible child beams. The UE selectively measures child beams based on parent beam measurement results, performing measurements on only the necessary portion of the beam space required to achieve the desired positioning precision.
3Adaptability or versatility
If parent and child PRS resource sets are configured across different frequency layers, then adaptability is improved, but device complexity increases due to multi-layer configuration management
Solution Approach 1:
The patent applies universality by designing a unified parent-child beam association framework that operates across multiple frequency layers. The same hierarchical beam management principles apply regardless of which frequency layer is used, allowing the system to handle multiple frequency layers with a single versatile configuration approach rather than requiring separate mechanisms for each layer.
Data Source
AI summary
Disclosed are techniques for wireless communication. In an aspect, a UE receives, from a position estimation entity, a parent PRS resource set configuration associated with a set of parent beams from a TRP, and a set of child PRS resource set configurations associated with a respective set of child beams for each of the set of parent beams. The UE performs measurements on the set of parent beams and at least one activated set of child beams. The position estimation entity receives at least one measurement report(s) based on measurements associated with the set of parent beams and the at least one activated set of child beams.