Quantum Channel Synchronization for Time-Sensitive Network Security

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Solution Overview

Problem

Time-sensitive networks require secure and precise synchronization to prevent malicious interference, as existing encryption methods may fail to detect and correct timing discrepancies caused by malicious messages, potentially leading to safety concerns in critical environments.

Innovation Solution

A communication system that uses a dedicated quantum channel for secure information exchange, determining and comparing classical and quantum channel synchronization times to modify a local classical oscillator and alert users of discrepancies, thereby ensuring accurate timing and security in time-sensitive networks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If classical encryption methods are used to protect communication in time-sensitive networks, then security is provided, but timing discrepancies caused by malicious messages cannot be detected or corrected

Engineering Contradiction:
Improvedetection of malicious interferenceVSAvoidtiming synchronization accuracy
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The patent introduces a quantum channel as an intermediary mechanism to transmit quantum bits (qubits) for synchronization timing. This quantum intermediary enables detection of timing discrepancies and malicious interference that classical encryption alone cannot detect, while maintaining the time-sensitive network's operational integrity

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the fundamental parameter of information transmission from classical bits to quantum bits, utilizing quantum mechanical properties (such as superposition and entanglement) to enable both secure communication and precise timing synchronization. This parameter change allows simultaneous achievement of security and timing accuracy

Inventive Principle:
Principle #35Parameter changes

2Reliability

If quantum channel is used for secret information exchange, then security against malicious actors is improved, but system complexity increases

Engineering Contradiction:
Improvesecurity protectionVSAvoidquantum channel integration
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the communication system into distinct quantum and classical channels, each handling specific functions. The quantum channel handles secret information exchange and synchronization, while the classical channel handles routine communication, reducing overall system complexity through functional separation

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The quantum channel serves multiple functions simultaneously: it provides secure secret information exchange, enables precise timing synchronization, and offers detection of malicious interference. This multi-functionality reduces the need for separate systems, thereby managing complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Loss of time

If synchronization time is determined via classical channel, then timing is provided, but timing errors cannot be detected when malicious messages are present

Engineering Contradiction:
Improvesynchronization timingVSAvoidtiming accuracy under attack
Core Design Contradiction:
Loss of timeVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where quantum bits transmitted through the quantum channel provide real-time information about timing synchronization status. This feedback enables detection of timing errors caused by malicious messages, allowing the system to identify and correct synchronization issues

Inventive Principle:
Principle #23Feedback

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system effectively corrects timing errors and notifies users of potential malicious activity, enhancing the security and reliability of time-sensitive networks by utilizing quantum key distribution for secure synchronization.

Implementation Method 1

exchange the secret information via a dedicated quantum channel in the time-sensitive network

Methodology Applied
Scientific EffectQuantum key distribution:

Implementation Method 2

A local classical oscillator is configured to provide a current time and is modified based on the quantum channel synchronization time

Methodology Applied
Scientific EffectClassical oscillator:

Data Source

PatentEP3793128B1Communication systems and methods
Publication Date: 2024.07.17 GENERAL ELECTRIC TECH GMBH
  • EP3793128B1 patent drawingFigure 1~2
  • EP3793128B1 patent drawingFigure 3

AI summary

A communication system is provided that include one or more processors that are configured to instruct computing devices that communicate messages with each other via a time-sensitive network to securely exchange the messages using secret information, ad direct the computing devices to exchange the secret information via a dedicated quantum channel in the time-sensitive network. The one or more processors are also configured to determine a quantum channel synchronization time associated with the secret information exchanged via the dedicated quantum channel, and modify a local classical oscillator based on the quantum channel synchronization time, the local classical oscillator configured to provide a current time.