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Ad hoc wireless networks in which nodes that can move freely have become key research areas in past and continue to dominate now also. This paper introduces and classifies several protocols in the field of constructing multicast concept in Mobile Ad hoc wireless NETworks (MANETs). Classification is performed according to several points of view such as underlying topology structure, topology maintenance approaches, initialization of multicast session, zone management and dependency on unicast routing protocols. Ad hoc networks are characterized by frequent change. Nodes may join the network at any time, get disconnected as they run out of power, or alter the physical network topology by moving to a new location.
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