Toward Mixture-of-Experts Enabled Trustworthy Semantic Communication for 6G Networks

• URL: http://arxiv.org/abs/2409.15695v1
• Date: Tue, 24 Sep 2024 03:17:51 GMT
• Title: Toward Mixture-of-Experts Enabled Trustworthy Semantic Communication for 6G Networks
• Authors: Jiayi He, Xiaofeng Luo, Jiawen Kang, Hongyang Du, Zehui Xiong, Ci Chen, Dusit Niyato, Xuemin Shen,
• Abstract summary: We introduce a novel Mixture-of-Experts (MoE)-based SemCom system. This system comprises a gating network and multiple experts, each specializing in different security challenges. The gating network adaptively selects suitable experts to counter heterogeneous attacks based on user-defined security requirements. A case study in vehicular networks demonstrates the efficacy of the MoE-based SemCom system.
• Score: 82.3753728955968
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Semantic Communication (SemCom) plays a pivotal role in 6G networks, offering a viable solution for future efficient communication. Deep Learning (DL)-based semantic codecs further enhance this efficiency. However, the vulnerability of DL models to security threats, such as adversarial attacks, poses significant challenges for practical applications of SemCom systems. These vulnerabilities enable attackers to tamper with messages and eavesdrop on private information, especially in wireless communication scenarios. Although existing defenses attempt to address specific threats, they often fail to simultaneously handle multiple heterogeneous attacks. To overcome this limitation, we introduce a novel Mixture-of-Experts (MoE)-based SemCom system. This system comprises a gating network and multiple experts, each specializing in different security challenges. The gating network adaptively selects suitable experts to counter heterogeneous attacks based on user-defined security requirements. Multiple experts collaborate to accomplish semantic communication tasks while meeting the security requirements of users. A case study in vehicular networks demonstrates the efficacy of the MoE-based SemCom system. Simulation results show that the proposed MoE-based SemCom system effectively mitigates concurrent heterogeneous attacks, with minimal impact on downstream task accuracy.

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