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Overlay multicast in mobile ad hoc networks (MANETs) with densely placed member nodes can cause inefficient packet transmission. It is because unicast paths are used in overlay multicast while, in MANETs, broadcast medium is used. Even though the nodes can reach each other within single hop, overlay multicasting creates unicast paths so that in such a case overlay multicast could be very inefficient...
The previous tree-based and mesh-based multicasting in mobile ad hoc networks need to be improved because of their shortcomings of the mechanisms. One of them is lots of signaling overheads to modify multicast trees due to dynamic topology, and the other is inefficiently exploiting wireless network resources for delicately set paths. For the reason, overlay multicast mechanisms in mobile ad hoc networks...
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