Proactive Eavesdropping Performance for Integrated Satellite-Terrestrial Relay Networks

This work investigates the proactive eavesdropping performance for the integrated satellite-terrestrial relay networks (ISTRNs) with multiple proactive monitors. To study the eavesdropping non-outage probability, we propose one proactive eavesdropping case/mode, where the legitimate monitors could change its roles between eavesdropping and jamming, namely, Eavesdropping then Jamming. Particularly, we get the accurate expressions of the eavesdropping non-outage probability for the proposed proactive eavesdropping mode in the presence of multiple monitors. To derive further insights, we provide the asymptotic analysis of the proposed eavesdropping non-outage probabilities. Besides, the colluding proactive eavesdropping scenario is considered, in which all the monitors cooperate to overhear or jam the legitimate users. Finally, numerical results are obtained to verify the rightness of the theoretical analysis.