Vehicle Device Offloading Wait Time Estimation

Solution Overview

Problem

Existing vehicle communication systems face challenges in improving data offloading rates without limiting or predefining a vehicle's travel route, as they rely on predictable access points for wireless LAN communication, which restricts flexibility and efficiency.

Innovation Solution

A vehicle device and communication management method that estimate offloading wait times based on encounter probabilities with wireless network access points, allowing data transmission to be offloaded from cellular to wireless LAN networks dynamically, without predefining the travel route.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the system uses predictable access points for wireless LAN communication, then data offloading rate is improved, but the vehicle's route flexibility is restricted

Engineering Contradiction:

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The system performs preliminary actions by predicting future access point encounter probabilities and estimating offloading wait times before the vehicle actually encounters access points. This allows the system to proactively determine optimal offloading opportunities without requiring predefined routes, resolving the contradiction between improving offloading rates and maintaining route flexibility

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system dynamically adjusts offloading decisions based on real-time conditions by continuously estimating offloading wait times and encounter probabilities. Instead of relying on static predefined routes, the system adapts to changing vehicle positions and access point distributions, enabling both high offloading rates and route flexibility simultaneously

Inventive Principle:

Principle #15Dynamics

2Productivity

If the system estimates offloading wait time accurately, then data transmission efficiency is improved, but computational complexity increases

Engineering Contradiction:

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The system uses the vehicle's existing position information and movement characteristics to self-estimate encounter probabilities and offloading wait times. By leveraging already-available data from the vehicle's navigation and communication systems, the system achieves accurate estimation without requiring additional complex sensors or computational resources

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system changes the estimation approach from complex real-time simulation to probabilistic modeling based on historical encounter data and current position information. This parameter change simplifies the computational complexity while maintaining accurate offloading wait time estimation, thereby improving data transmission efficiency without excessive computational burden

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20230379978A1Vehicle device, server, and communication management method

Publication Date: 2023.11.23

AI summary

A vehicle device includes: an estimation information acquirer configured to acquire estimation information that enables estimation of an offloading wait time according to an encounter probability at which a target vehicle encounters an access point of a wireless network usable as a second line; a wait time estimator configured to estimate the offloading wait time based on the estimation information acquired by the estimation information acquirer; and an offloading determiner configured to determine whether or not offloading is performable based on the offloading wait time estimated by the wait time estimator.