Terminal Relay Switching Based on Relative Location

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Solution Overview

Problem

Existing wireless communication systems struggle to efficiently manage the switching of connection destinations between wireless relay devices and wireless base stations for terminal devices when they are within or outside movable bodies, leading to instability and potential communication disruptions.

Innovation Solution

A wireless communication system that includes wireless relay devices and terminal devices capable of determining their relative locations and displacements, adjusting connection destinations based on proximity and coincidence, and switching between wireless relay devices and base stations to maintain stable communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If terminal devices frequently switch connection destinations between wireless relay devices and base stations, then connection flexibility is improved, but communication stability deteriorates

Engineering Contradiction:

Improveconnection flexibilityVSAvoidcommunication stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system implements feedback mechanisms where terminal devices report their locations and connection states to wireless relay devices and base stations. This feedback loop enables intelligent decision-making for connection switching, allowing the system to maintain stability while adapting to changing conditions through informed connection management.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The connection management system dynamically adjusts connection destinations based on real-time conditions such as terminal device locations, signal strength, and network load. This dynamic approach allows the system to optimize connectivity without causing frequent unstable switching, as decisions are based on current operational states rather than rigid protocols.

Inventive Principle:

Principle #15Dynamics

2Measurement precision

If the system manages connection switching based on location information, then connection accuracy is improved, but system complexity increases

Engineering Contradiction:

Improveconnection accuracyVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

Terminal devices autonomously determine their own locations and make connection decisions based on pre-configured criteria. This self-service approach reduces the need for complex centralized control systems, as each terminal device independently manages its connections using simple location-based logic without requiring sophisticated system-wide coordination.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The connection management function is segmented between terminal devices and network infrastructure. Terminal devices handle location determination and basic connection decisions locally, while base stations and wireless relay devices manage broader network coordination. This segmentation reduces overall system complexity by distributing computational tasks rather than concentrating them in a single complex controller.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250358706A1Terminal device, wireless relay device, movable body, and wireless communication method

Publication Date: 2025.11.20 HONDA MOTOR CO LTD

AI summary

A terminal device includes a communication unit which receives broadcast data transmitted from a wireless relay device, and a control unit which acquires location information of the wireless relay device from the broadcast data and performs processing for switching a connection destination of the terminal device based on a comparison result between the location information acquired from the broadcast data and location information of the terminal device.