Multi-User XR Content Synchronization Using RF Relative Positioning

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing extended reality (XR) systems struggle to efficiently modify XR content based on the relative position and orientation of multiple XR devices, leading to inconsistent and uncoordinated XR experiences across different users.

Innovation Solution

XR devices utilize radio-frequency (RF) signals to determine relative-position information, allowing them to modify XR content based on the proximity, orientation, and coordination with other XR devices, ensuring synchronized and coordinated XR experiences.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If XR systems modify content based on relative position and orientation of multiple devices, then user interaction and immersion are enhanced, but system complexity and coordination requirements increase

Engineering Contradiction:

ImproveXR content adaptabilityVSAvoidsystem complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent employs RF signals as an intermediary mechanism to enable XR devices to determine relative position and orientation information. This mediator allows devices to coordinate their content modification without direct complex communication protocols, reducing system complexity while maintaining adaptability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system continuously monitors relative position and orientation of XR devices and dynamically adjusts XR content accordingly. This feedback loop enables real-time content adaptation to user positions and orientations, enhancing immersion while managing complexity through automated adjustments.

Inventive Principle:

Principle #23Feedback

2Reliability

If XR devices determine relative position using RF signals, then synchronized XR experiences are achieved, but measurement precision requirements increase

Engineering Contradiction:

Improvesynchronization reliabilityVSAvoidposition measurement precision

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The patent utilizes RF signal parameters (such as signal strength, phase, or time of flight) to determine relative position and orientation. By changing and analyzing multiple RF parameters, the system achieves reliable position determination with adequate precision for XR content synchronization.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The system replaces complex mechanical positioning systems with RF-based electromagnetic measurement. This substitution achieves reliable position determination for XR synchronization without the mechanical complexity and precision requirements of physical measurement systems.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If XR content is modified in real-time based on device positions, then user immersion is enhanced, but processing speed and response time requirements increase

Engineering Contradiction:

Improvereal-time content adaptationVSAvoidcontent modification speed

Core Design Contradiction:

Adaptability or versatilityVSSpeed

Solution Approach 1:

The system pre-processes and prepares XR content variations in advance, so that when relative position conditions are determined, the appropriate content can be quickly selected and displayed. This preliminary preparation reduces real-time processing requirements while maintaining immersive content adaptation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements dynamic content modification where XR content adjusts continuously based on real-time position data. The system balances processing speed by modifying only necessary content parameters rather than complete scene reconstruction, maintaining immersion while managing processing demands.

Inventive Principle:

Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach enables seamless and synchronized XR content modification across multiple devices, enhancing user interaction and immersion by adapting XR content in real-time based on the relative positions and orientations of users.

Implementation Method 1

receiving, at the first device, a radio-frequency (RF) signal from the second device; making one or more measurements of the RF signal; determining relative-position information associated with the first device and the second device based on the one or more measurements

Methodology Applied

Scientific EffectRadio-frequency signal propagation: Electromagnetic Induction

Data Source

PatentUS20260086761A1Multi-user extended-reality content

Publication Date: 2026.03.26 QUALCOMM INC

AI summary

Systems and techniques are described herein for extended reality. For instance, a method for extended reality is provided. The method may include providing common virtual content for display at a first device, the common virtual content viewable at a second device; receiving, at the first device, a radio-frequency (RF) signal from the second device; making one or more measurements of the RF signal; determining relative-position information associated with the first device and the second device based on the one or more measurements; determining that a relative-position condition is satisfied based on the relative-position information; and modifying the common virtual content for display by at least the first device based on the relative-position condition being satisfied.