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Cognitive Radio Networks (CRNs) have been receiving significant research attention due to their ability to address the problems related with the usage of ‘precious’ spectrum. Majority of the research in the field of CRNs has been carried out at lower two layers of the protocol stack. Very recently people have started working at network and above layers. Due to the dynamic nature of the spectrum available...
Connectivity and robustness of ad-hoc cognitive radio network are the challenges faced by cognitive radio network due to moving nature of the channels, which are available for the communication to take place, among cognitive radio nodes. This challenge can be addressed by the concept of Clustering, which groups the neighboring nodes of a cognitive radio network. It helps the node to switch to other...
Cognitive Radio Networks (CRNs) is an impressive invention in wireless technology due to its capacity to resolve spectrum scarcity crisis. It takes benefit of the underutilized licensed spectrum band to create effective or useful consumption of overall frequency spectrum band. The best spectrum is selected in an opportunistic manner, shared with other users with no violation to licensed users. Dynamic...
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