XR System P2P Data Sharing Reduces Cloud Latency

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Solution Overview

Problem

Extended reality (XR) devices face significant bandwidth consumption and power usage when frequently retrieving large and dynamic XR data from cloud-based storage, leading to mobile network congestion and latency issues.

Innovation Solution

An XR system that determines the necessary data based on location and employs a peer-to-peer network to share and retrieve XR data from local devices, reducing the need for direct cloud connections by using a data determining unit, communication method determining unit, and communication unit to manage requests between remote and local storage via a peer-to-peer network.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If XR data is retrieved frequently from cloud-based storage via mobile network, then data freshness and accuracy are improved, but bandwidth consumption and power usage increase significantly

Engineering Contradiction:

Improvedata freshnessVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent introduces local devices as intermediary nodes between the XR system and cloud-based storage. These local devices cache XR data and provide it to the XR system via peer-to-peer network, reducing direct cloud connections. The intermediary local devices maintain data freshness while consuming less power and bandwidth compared to frequent direct cloud retrievals.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If XR data is retrieved frequently from cloud-based storage, then data accuracy is improved, but mobile network congestion increases

Engineering Contradiction:

Improvedata accuracyVSAvoidnetwork throughput

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The patent implements a copying mechanism where local devices create and maintain copies of XR data in their local storage. Instead of the XR system repeatedly fetching the same data from cloud storage, local devices provide local copies via peer-to-peer network. This copying approach maintains data accuracy while significantly reducing mobile network traffic and congestion.

Inventive Principle:

Principle #26Copying

3Reliability

If direct cloud connections are used for XR data retrieval, then data availability is ensured, but latency increases

Engineering Contradiction:

Improvedata availabilityVSAvoidlatency

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by having local devices pre-obtain and cache XR data from cloud storage before the XR system needs it. When the XR system requires data, local devices can immediately provide it through peer-to-peer network without waiting for cloud retrieval. This preliminary caching action ensures data availability while minimizing latency.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11652878B2Extended-reality system and method

Publication Date: 2023.05.16 ARM LTD

AI summary

An extended-reality system is described which determines extended-reality data to be obtained from the remote network-connected storage based on a location of the extended-reality system. The extended-reality system determines a communication method by which to obtain the extended-reality data, wherein the extended-reality data may be obtained by one or more requests to the remote network-connected storage or by one or more requests to a local device outside of the extended-reality system. A request is sent to at least one of the local device via a peer-to-peer network and the remote network-connected storage in dependence upon the determination by the extended-reality system.