Abstract

A Mobile Ad-hoc network (MANET) is composed of mobile nodes without using infrastructure. There are several virtual architectures used in the protocol without need of maintaining state information for more robust and scalable membership management. In this paper, we propose a Robust and Scalable Geographic Multicast protocol (RSGM). Both the control messages and data packets are forwarded along efficient tree-like paths, but there is no need to explicitly create and actively maintain a tree structure. To avoid periodic flooding of the source information throughout the network, a well-organized source tracking mechanism is designed. We are analyzing the protocols RSGM, SPBM and ODMRP with the performance metrics such as packet delivery ratio, control overhead, average path length and average joining delay by varying moving speed, node density, group size and network ranges.

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