Enhancement of manet routing protocol

摘要

The Mobile Ad-hoc Network is a collection of self-configuring mobile node without any infrastructure. It is a multi-hop process because of the limited transmission range of energy constrained mobile nodes and thus each device in network topology acts as a router. Routing protocols are necessary to find paths to reach other node. MANET (Mobile Ad-hoc Network) is a self organizing and self configuring network without the need of any centralized base station. In MANETs, the nodes are mobile and battery operated. As the nodes have limited battery resources and multi-hop routes are used over a changing network environment due to node mobility, it requires energy efficient routing protocols to limit the power consumption, prolong the battery life and to improve the robustness of the system. The widely-used protocol in Mobile Ad hoc Network (MANET) achieves a dynamic, self- organizing and on- demand multi-hop routing by means of the AODV routing protocol. This paper evaluates the performance of various ad-hoc routing protocols such as, D S D V, AODV, DSR, T O R A and AOMDV in terms of energy efficiency and it also proposes a new routing algorithm that modifies AOMDV and it provides better performance compared to all the above protocols. Simulation is done using NS-2 Simulator.