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Cognitive radio networks need stringent and secure group communication as nodes dynamically access the free portions of radio frequency spectrum to solve the spectrum scarcity in wireless networks. The cognitive radio ad hoc networks can use group key agreement to achieve security in group communication and tree topology to organize the group members in order to reduce the complexity of group operations...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.