Abstract
Routing protocols for MANET have to face the challenge of frequently changing topologies. Conventional proactive and reactive type routing protocols are less efficient under these circumstances. Hybrid protocol named Zone Routing Protocol clubs the advantages of the former protocols by maintaining an up to date topological map. Several virtual architectures are being used for better robust and scalable membership management without maintenance of state information. A Robust and Scalable Geographic Multicast protocol is proposed in this paper forwards the control messages and data packets without explicitly creating and maintain a tree structure. A predefined and properly organized source tracking mechanism is designed to exclude flooding of the MANET source information. Virtual networks are deployed and analyzed for different number of nodes. Our simulation results and comparison shows that proposed protocol offers higher, throughput, lesser drop and lower control over head with even with varying network sizes, moving speeds and node densities.
Highlights
Ad hoc network is a multi-hop wireless network and a mobile ad-hoc network is a self- configuring network of mobile routers connected by wireless links
Routing protocols for MANET have to face the challenge of frequently changing topologies
A Robust and Scalable Geographic Multicast protocol is proposed in this paper forwards the control messages and data packets without explicitly creating and maintain a tree structure
Summary
Ad hoc network is a multi-hop wireless network and a mobile ad-hoc network is a self- configuring network of mobile routers connected by wireless links. In MANET, the network topology changes frequently as the nodes are being connected and disconnected rapidly and unpredictably Because of this dynamic characteristic MANETs, conventional routing protocols are not viable. In larger MANETs, it is difficult to create and maintain tree structure, transmission may not be reliable if the tree connection were break Another mesh based protocol, On Demand Multicast Routing (ODMRP) applies reactive protocol procedures to configure routes. If this leader is unaware of the position or addresses of the source node the leader can obtain the position information from the source home As this two tier procedure, source node multicasts data packets to the zones and packets reach member zone. Zone leader forwards the packets through the virtual reverse-tree structure to the nodes of member zone.
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