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Security- and Reliability-Guaranteed Transmission Control of Time-Sensitive Physical Layer Security Systems.

Jianye Li1, Yunquan Dong1,2, Chengsheng Pan1

  • 1School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China.

Entropy (Basel, Switzerland)
|July 29, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces an SNR-gated transmission control scheme to enhance physical layer security. The method reduces outage and interception probabilities by intelligently managing transmissions based on signal-to-noise ratio (SNR) estimates.

Keywords:
age of informationinterception probabilityoutage probabilityphysical layer securitytransmission control

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Area of Science:

  • Information Theory
  • Wireless Communications
  • Network Security

Background:

  • Physical layer security is crucial for secure information transmission.
  • Imperfect channel estimations pose challenges in wireless systems.
  • Balancing security and reliability requires advanced transmission strategies.

Purpose of the Study:

  • To propose an SNR-gated transmission control scheme for a three-node physical layer security system.
  • To reduce outage and interception probabilities by controlling transmissions based on channel conditions.
  • To analyze the trade-off between security metrics and network timeliness (Peak Age of Information).

Main Methods:

  • Developed an SNR-gated transmission control scheme based on imperfect main and eavesdropping channel estimations.
  • Defined transmission rules: halt if main channel gain is too low (avoid outage) or too high (avoid interception).
  • Derived explicit expressions for outage probability, interception probability, and Peak Age of Information (PAoI) violation probability.

Main Results:

  • The proposed SNR-gated scheme effectively reduces both outage and interception probabilities.
  • Numerical and Monte Carlo simulations validate the performance improvements.
  • Demonstrated a method to investigate the trade-off among security and timeliness probabilities.

Conclusions:

  • The SNR-gated transmission control is an effective strategy for enhancing physical layer security.
  • The scheme provides a practical approach to mitigate security risks in wireless networks.
  • Further analysis can optimize the trade-offs for specific network requirements.