IMAODV: A reliable and multicast AODV protocol for MANET

A Mobile Ad hoc Network (MANET) can allow mobile nodes to setup a temporary network for instant communication without any fixed infrastructure. Mobile nodes dynamically exchange data/ information among themselves without any fixed base station. Many networking applications such as video conferencing, video-on-demand services, and distributed database replications require multicast communications. Providing reliable multicast is one of the basic requirements to develop better routing protocols which is used for disaster management, emergency relief, mobile conferencing among many other applications. As mobile host changes its access point over a time interval, multicast routes have to be updated frequently. This poses several challenges to provide an efficient multicast routing. In this paper, we propose an Improved Multicast Ad hoc On Demand Distance Vector (IMAODV) protocol based on Ad hoc On Demand Distance Vector (AODV) and Multicast AODV (MAODV) protocol to support reliability and multicasting for on-line routing of delivery-guaranteed multicasts. Exhaustive simulation experiments reveal that, proposed IMAODV performs better in terms of Packet Delivery Ratio (PDR), average End-to-End delay and Network Routing Load (NRL) compared to both AODV and MAODV for high mobility rate and large network grid size.