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Multicast routing is considered as one of the most important process inMobile Ad hoc Networks (MANETs) to enable video sharing and data dissemination.Multicast routing can be used without any difficulties if a medium can beaccessed by any transmitter at any given time. Unfortunately, challenges suchas the unexpected behavior of primary users (PUs) and their access priority aswell as network heterogeneity may appear in cognitive radio networks (CRNs). Inthis thesis, we propose a multi-layer multicast routing protocol for multi-hopmobile Ad Hoc CRN based on the concept of the minimum spanning tree (MST) andthe shortest path tree (SPT). The proposed algorithm employs the probability ofsuccess (POS) metric in performing the channel assignment process. Simulationsexperiments were conducted, to investigate the effectiveness of the proposedscheme, compare the performance of the proposed scheme withthe-state-of-the-art schemes, and study the performance of the proposed schemeunder various network conditions in terms of throughput and packet deliveryrate (PDR). Simulations results show that the SPT outperforms MST in term ofthroughput all the time.

Multi-layer Mechanism for Multicast Routing in Multihop Cognitive Radio Networks