Zero Touch Connectivity With Trust-Based Foreign Wi-Fi Security

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Solution Overview

Problem

Existing Zero Touch Connectivity (ZTC) methods prioritize easy access over security, neglecting the secure transmission of critical data in user devices accessing foreign Wi-Fi networks, and require significant manual user interaction for network selection and authentication.

Innovation Solution

A method and system for ensuring secure communication in a ZTC environment by identifying the trustworthiness of Wi-Fi hotspots, setting appropriate security levels based on trustiness, and establishing communication links without user intervention, using a ZTC-Device and ZTC-Backend to manage secure access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If Zero Touch Connectivity methods are used to enable automatic access to foreign Wi-Fi networks, then ease of operation is improved, but security is worsened due to neglect of secure transmission of critical data

Engineering Contradiction:
Improveautomatic network accessVSAvoiddata transmission security
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent changes the security parameter dynamically based on the trustiness level of the Wi-Fi network. The system adjusts security measures (such as encryption strength or data transmission protocols) according to the assessed trustworthiness of each foreign Wi-Fi network, allowing automatic access while maintaining appropriate security levels for different network environments

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent introduces a backend server as an intermediary that assesses the trustiness of foreign Wi-Fi networks and mediates the connection process. This backend acts as a security gateway that automatically evaluates networks and establishes secure communication channels without requiring user intervention, thus maintaining both ease of operation and security

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If manual network selection and authentication processes are implemented, then security is improved through user control, but ease of operation is worsened requiring significant user interaction

Engineering Contradiction:
Improvenetwork access securityVSAvoiduser interaction requirement
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent implements a self-service mechanism where the system automatically performs network selection, trustiness assessment, and authentication processes. The ZTC device autonomously evaluates foreign Wi-Fi networks using backend-provided criteria and establishes connections without user intervention, eliminating manual interaction while maintaining security through automated trust verification

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent performs preliminary security assessments and trustiness evaluations before establishing connections. The backend pre-evaluates Wi-Fi networks and provides trustiness information in advance, allowing the system to make secure connection decisions automatically without requiring users to manually verify network safety

Inventive Principle:
Principle #10Preliminary action

3Reliability

If high security levels are applied to all Wi-Fi connections, then data transmission security is improved, but use of energy is worsened reducing battery life

Engineering Contradiction:
Improvecommunication securityVSAvoiddevice battery consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies different security levels to different Wi-Fi networks based on their local trustiness characteristics. Instead of uniformly applying high security to all connections, the system assesses each network's trustworthiness and applies security measures proportionally, using higher security only where needed and lower security where trust is established, thus optimizing energy consumption

Inventive Principle:
Principle #3Local quality

4Productivity

If trustiness assessment and dynamic security level adjustment are implemented, then data throughput is improved by reducing unnecessary security overhead, but device complexity is worsened

Engineering Contradiction:
Improvedata transmission efficiencyVSAvoidsecurity management complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent extracts the complex trustiness assessment and security level determination logic from the ZTC device and places it in the backend server. The device only needs to communicate connection requests and receive security level instructions, significantly reducing its complexity while enabling dynamic security adjustment and optimal data throughput based on network trustiness

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS12432558B2Method and communication system for ensuring secure communication in a zero touch connectivity-environment
Publication Date: 2025.09.30 DEUTSCHE TELEKOM AG
  • US12432558B2 patent drawing
  • US12432558B2 patent drawing

AI summary

A method ensures secure communication of a Zero Touch Connectivity-Device (ZTC-Device) in a communication system. The ZTC-Device is configured to communicate with a ZTC-Backend of the communication system by establishing a communication link to the ZTC-Backend via a foreign Wi-Fi hotspot of the communication system. The method includes: locating, by the ZTC-Device, the foreign Wi-Fi Hotspot; identifying the Wi-Fi Hotspot; retrieving a type of trustiness of the Wi-Fi Hotspot based on the identity of the Wi-Fi Hotspot; providing the ZTC-Device and/or the ZTC-Backend with the type of trustiness; and setting, by the ZTC-Device and/or the ZTC-Backend, a security level of the communication link based on the type of trustiness.