Strategy optimization method based on UAVs-assisted detection of covert communication

Abstract

Unmanned aerial vehicles (UAVs) are highly mobile and easily deployable devices that have become an important component of wireless communication countermeasures. Covert communication, the main method used to ensure wireless communication security, has been extensively studied in recent years. However, existing research primarily uses UAVs as auxiliary tools for covert communications, to improve communication performance, ignoring situations in which the detector utilizes UAVs for interference suppression. In this study, we propose a UAV-assisted jamming detection covert communication game model. Specifically, the UAV actively transmits noise to Alice's transmission channels to disrupt covert transmission when Willie detects a covert communication transmission. Furthermore, we analyze the adversarial process between the detector and Alice under UAV-assisted jamming based on game theory, theoretically verify the conditions for the existence of a Nash equilibrium, and formulate optimal strategies for both sides.