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CR and PU hidden terminals in multi-channel Cognitive MAC protocols result in increased packet drops. This is due to inefficient node synchronization with existing "Control Channel" design. To date, In-band and Out-of-band CCC based MAC protocols are proposed to avoid PU and CR hidden terminals. But, In-band CCC based CR-MAC protocols cannot efficiently resolve the hidden terminal packet drops due to imperfect node synchronization whereas out-of-band CCC based MAC is vulnerable to intruderdoi:10.4108/ws.1.3.e1 fatcat:rxpjyknlqjgojkv3qngzfiqlti