Itinerary-Based Media Pre-Caching for Weak-Signal Travel Playback

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Solution Overview

Problem

Users face challenges in accessing multimedia content during travel due to poor or no network signal reception, which affects their entertainment experience.

Innovation Solution

An electronic device pre-caches multimedia content based on user itinerary information, determining cache duration and content selection to ensure availability during travel, even in areas with weak network signals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If users access multimedia content through the Internet during travel, then entertainment requirements are met, but network signal reception deteriorates user experience

Engineering Contradiction:
Improveentertainment availabilityVSAvoidnetwork signal reception
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The system performs preliminary action by pre-caching multimedia content before the user enters a poor network signal environment. The electronic device determines the duration for which content should be cached based on itinerary information, and automatically downloads and stores the content in advance, so that when the user encounters network signal issues during travel, the content is already available locally and can be played without interruption.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If the electronic device pre-caches multimedia content based on itinerary information, then uninterrupted access is enabled during travel, but storage space and time are consumed

Engineering Contradiction:
Improvecontent availabilityVSAvoidstorage space
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The system applies local quality by determining the precise caching duration based on specific itinerary information and network signal predictions for different locations. Instead of caching content for the entire travel duration, the system calculates the exact duration needed based on where and when the user will encounter poor network signals, thereby optimizing storage space utilization while ensuring content availability only when and where needed.

Inventive Principle:
Principle #3Local quality

3Reliability

If the electronic device determines cache duration based on travel duration, then sufficient content is cached for the entire trip, but unnecessary content is stored during good network areas

Engineering Contradiction:
Improveoffline content availabilityVSAvoidcaching time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system implements dynamics by making the cache duration adaptive rather than fixed. The electronic device dynamically determines the caching duration based on real-time or pre-fetched network signal strength information at different locations along the itinerary. When network signals are predicted to be poor, the system extends the caching duration; when network signals are good, it reduces the caching duration, thereby optimizing both content availability and time efficiency.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP4727091A1Pre-caching method, user interface, and electronic device
Publication Date: 2026.04.15 HUAWEI TECH CO LTD
  • EP4727091A1 patent drawingFigure 1
  • EP4727091A1 patent drawingFigure 2
  • EP4727091A1 patent drawingFigure 3

AI summary

This application discloses a pre-caching method, a user interface, and an electronic device. The method includes: The electronic device obtains itinerary information, and pre-caches, based on the itinerary information, multimedia content before a user travels, or pre-caches a part of the multimedia content when the user travels, to ensure that the electronic device can play the cached multimedia content smoothly when the user passes through a road section whose network signal strength is weak during travel. In this way, the user can be freed from being affected by a network signal when watching the multimedia content, and an entertainment requirement of the user during travel can be met.