Assessment of QoS based multicast routing protocols in MANET

MANET is a self managed and eminently dynamic wireless connection of nodes. Group communication in MANET expanding its usability in real scenario day by day. Some group-oriented scenarios in wireless ad-hoc networks are e-education, ecommerce, vehicular networks, searching and rescue operations, audio/video conferences, battlefields and disaster management etc. Demand of group communication is a quick construction of reliable and dynamic multicast paths, which works efficiently under constrained environment like dynamic channel conditions and mobile nodes. Multicasting is a critical approach which facilitates lots of real applications, to achieve cluster conversations instead of dialogues between two individuals. To provide informative summary of various QoS based multicast path finding protocols proposed in recent year´s research, an analysis is done in this paper, along with their operational features and advantages. Performance comparison based on their network architecture, QoS parameters, characteristics and information used for routing is also presented in tabular form so that new researchers may easily review and take benefit of it in their research.