PRS Resource Subsets for Joint Position Estimation

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Solution Overview

Problem

Existing wireless communication systems face challenges in accurately positioning user equipment (UE) in joint position estimation groups, particularly due to the complexity of coordinating reference signal resources across multiple UEs.

Innovation Solution

The method involves determining common assistance data for UEs in a joint position estimation group and allocating specific subsets of positioning reference signal (PRS) resources to each UE. This allows for coordinated measurement and transmission of PRSs, enabling accurate position estimation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If PRS resources are allocated to multiple UEs in a joint position estimation group, then position estimation accuracy is improved, but resource coordination complexity increases

Engineering Contradiction:

Improveposition estimation accuracyVSAvoidresource coordination complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent divides the joint position estimation group into multiple subsets, with each subset allocated specific PRS resources. This segmentation allows independent resource management for each subset while maintaining overall coordination, thereby reducing the complexity of managing PRS resources across all UEs simultaneously while preserving position estimation accuracy.

Inventive Principle:

Principle #1Segmentation

2Productivity

If assistance data is shared among UEs in a joint group, then positioning efficiency is improved, but data management complexity increases

Engineering Contradiction:

Improvepositioning efficiencyVSAvoiddata management complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The assistance data is segmented into multiple subsets, with each subset corresponding to specific UEs or UE groups. This segmentation enables efficient data distribution and management, allowing UEs to receive only relevant assistance data while maintaining high positioning efficiency and reducing overall data management complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The assistance data structure is designed to serve multiple functions: it provides positioning information for individual UEs, supports joint position estimation for UE groups, and enables flexible resource allocation. This multi-functionality improves positioning efficiency while avoiding the need for separate data management systems.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250039825A1Positioning reference signal resource subsets for user equipments of a joint position estimation group

Publication Date: 2025.01.30 QUALCOMM INC

AI summary

Disclosed are techniques for communication. In an aspect, a position estimation entity includes determines common assistance data for a joint position estimation group, and sends to first and second UEs. The position estimation entity further sends indications of which PRS resources associated with the common assistance data is active for the first and second UEs. The position estimation entity receives measurement information from the first and/or second UEs, and derives position estimations of the first and second UEs.