Heterogeneous Wireless Network Secrecy via Interference Thresholds

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Solution Overview

Problem

Wireless communication systems are vulnerable to eavesdropping due to their intrinsic characteristics, and existing security technologies, such as encryption, do not adequately address the issue of data secrecy, especially in distributed network environments.

Innovation Solution

A heterogeneous distributed wireless network system enhances secrecy transmission rates by utilizing the physical characteristics of wireless channels, including interference channels, to determine and adjust transmission thresholds and probabilities for secure data exchange between transmitters and receivers, ensuring secure communication through selective data transmission based on signal-to-interference noise ratios (SINR) and signal-to-noise ratios (SNR).

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If encryption technology is used at the network layer, then data security is improved, but information leakage can still occur through decryption technology

Engineering Contradiction:

Improvedata securityVSAvoidinformation leakage

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The patent converts the harmful interference from heterogeneous distributed networks into a beneficial security mechanism. By deliberately introducing artificial noise and exploiting interference channels, the system creates physical layer security that prevents eavesdropping without requiring complex encryption, thus addressing the vulnerability where encrypted data can still be decrypted.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent replaces the mechanical/crypto-based security system (encryption/decryption) with a physics-based security system (physical layer security). Instead of relying on computational complexity of encryption algorithms, the system uses physical characteristics of wireless channels including path loss, interference, and noise to guarantee security, making it immune to decryption attacks.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If data is transmitted in heterogeneous distributed wireless networks, then communication productivity is improved, but vulnerability to eavesdropping increases

Engineering Contradiction:

Improvecommunication efficiencyVSAvoideavesdropping vulnerability

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent transforms the harmful effect of multiple transmitters causing interference into a beneficial security feature. The artificial noise generated by transmitters not transmitting data, combined with natural interference from heterogeneous networks, creates a secure environment where eavesdroppers cannot distinguish signal from noise, while legitimate receivers can still decode their intended data.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent applies different transmission strategies to different transmitters and receivers based on their local channel conditions. Each transmitter/receiver pair operates independently with its own threshold, allowing the system to maintain high productivity for legitimate communications while providing localized security protection against eavesdropping in each spatial region.

Inventive Principle:

Principle #3Local quality

3Stability of the object's composition

If transmission threshold is calculated globally for the entire network, then system coordination is improved, but flexibility in handling heterogeneous network conditions is reduced

Engineering Contradiction:

Improvenetwork coordinationVSAvoidhandling heterogeneous conditions

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent segments the global network into multiple independent distributed networks, each with its own threshold calculation. This segmentation allows each sub-network to adapt to its specific heterogeneous conditions (different path losses, interference levels, and channel characteristics) while maintaining overall system coordination through the distributed nature of the architecture.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic threshold calculation where each transmitter/receiver pair independently determines its transmission threshold based on real-time channel conditions including SINR and path loss. This dynamic adaptation allows the system to handle heterogeneous network conditions flexibly while maintaining stability through distributed coordination mechanisms.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11973583B2Communication method of heterogeneous distributed wireless network system, and heterogeneous distributed wireless network system

Publication Date: 2024.04.30 KOREA ADVANCED INST OF SCI & TECH

AI summary

A communication method of a heterogeneous distributed wireless network system includes calculating a first transmission threshold in the heterogeneous distributed wireless network system including a plurality of distributed networks that share a same frequency band, determining whether data is transmitted by transmitter/receiver pairs included in the heterogeneous distributed wireless network system, based on the first transmission threshold, calculating a second transmission threshold locally for each of the distributed networks, based on whether data is transmitted by at least one transmitter belonging to the transmitter/receiver pairs, selectively determining whether data is transmitted for each of the distributed networks based on the second transmission threshold, and transmitting the data.