Label-free Deep Learning Driven Secure Access Selection in Space-Air-Ground Integrated Networks

• URL: http://arxiv.org/abs/2308.14348v1
• Date: Mon, 28 Aug 2023 06:48:06 GMT
• Title: Label-free Deep Learning Driven Secure Access Selection in Space-Air-Ground Integrated Networks
• Authors: Zhaowei Wang, Zhisheng Yin, Xiucheng Wang, Nan Cheng, Yuan Zhang, Tom H. Luan
• Abstract summary: In space-air-ground integrated networks (SAGIN), the inherent openness and extensive broadcast coverage expose these networks to significant eavesdropping threats. It is challenging to conduct a secrecy-oriented access strategy due to both heterogeneous resources and different eavesdropping models. We propose a Q-network approximation based deep learning approach for selecting the optimal access strategy for maximizing the sum secrecy rate.
• Score: 26.225658457052834
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In Space-air-ground integrated networks (SAGIN), the inherent openness and extensive broadcast coverage expose these networks to significant eavesdropping threats. Considering the inherent co-channel interference due to spectrum sharing among multi-tier access networks in SAGIN, it can be leveraged to assist the physical layer security among heterogeneous transmissions. However, it is challenging to conduct a secrecy-oriented access strategy due to both heterogeneous resources and different eavesdropping models. In this paper, we explore secure access selection for a scenario involving multi-mode users capable of accessing satellites, unmanned aerial vehicles, or base stations in the presence of eavesdroppers. Particularly, we propose a Q-network approximation based deep learning approach for selecting the optimal access strategy for maximizing the sum secrecy rate. Meanwhile, the power optimization is also carried out by an unsupervised learning approach to improve the secrecy performance. Remarkably, two neural networks are trained by unsupervised learning and Q-network approximation which are both label-free methods without knowing the optimal solution as labels. Numerical results verify the efficiency of our proposed power optimization approach and access strategy, leading to enhanced secure transmission performance.

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