Multicast routing in mobile ad hoc networks by using a multiagent system
Information Sciences: an International Journal
Research on multicast routing protocols for mobile ad-hoc networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Dynamic maintenance for multicast source tree in wireless ad hoc networks
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Review: Review of multicast routing mechanisms in mobile ad hoc networks
Journal of Network and Computer Applications
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An ad hoc network is composed of mobile nodes without any infrastructure. Mobile nodes self organize themselves to form a network over radio links. The trend of applications of mobile ad hoc networks requires increased group oriented services. Hence multicast support is critical for ad hoc networks. As the number of participating nodes increase, scalability becomes an important issue. On Demand Multicast Routing Protocol (ODMRP) provides high Packet Delivery Ratio in presence of high mobility. But ODMRP suffers from higher control overhead as the network size and the number of source nodes increase. In this paper, we present an efficient hybrid multicast routing protocol suitable for high mobility applications and it addresses the scalability issue of ODMRP protocol. This protocol separates out data forwarding path from join-query forwarding path. We incorporate low overhead local clustering technique to classify all nodes into core and normal categories. When multicast routes to destination nodes are unavailable, join-query messages are sent to all nodes in the network and data packets are forwarded by the core nodes to the destination nodes using Differential Destination Multicast. Through simulations we show that this protocol reduces control overhead and increases packet delivery ratio by 20-50% for different network scenarios.