Preserving Operation Frequency Privacy of Incumbents in CBRS

Citizens Broadband Radio Service (CBRS) is a novel service band in the United States, spanning 3550 – 3700 MHz, recently opened for commercial cognitive operations. The CBRS has three tier hierarchical architecture, wherein, topmost users (also called as incumbents) include military radars. second and third facilitate licensed unlicensed access to band, respectively. privacy of incumbents been major concern different schemes have proposed literature preserve their location operation time. However, frequency not suitably addressed. incumbent vulnerable inference attacks from adversary. For instance, an adversary can deduce if compromised device asked switch another channel. Therefore, this paper, we propose probabilistic usage dummy on channel analyse snapshot time based models system. optimum generation probability obtained models, varying capabilities adversary, system parameters. Finally, verify results through simulations.