Zone Based Transmission In Manets

The increasing challenges in MANET (Mobile Adhoc Network) such as multicast packet forwarding, group maintenance and the path structure over the dynamic topology arises as the size of the network increases. The Geographic Locatable Multicast Protocol (GLMP) proposed in this paper is to resolve the issues that is being faced in large size MANET's. The Virtual tree structure used in the protocol without need of maintaining state information for more group management and packet forwarding in the dynamic network due to unstable node movements. The scalable and efficient group is managed through virtual tree structure and the position of the node is managed through the group management. The message information and data packets are forwarded along the virtual tree paths, but there is no need to explicitly create and actively maintain a structure. This virtual structure efficiently reduces the tree management overhead and support the transmissions. The periodic source information is avoided and efficient source tracking mechanism is designed using the GLMP. The Null-Zone problem is handled by using the BPRT (Back Pressure Restoration Technique) algorithm. It induces the empty packets to flow in the network where the link break and transmission failures are identified.