COMPARISON OF AODV DSDV AND DSR PROTOCOL PERFORMANCE WITH VARYING NUMBER OF NODES BY NS-2 SIMULATOR

Abstract

Mobile ad-hoc networks (MANET) are dynamic non-structure networks for mobile data communication. These networks are linked together using multi-node routing protocol so that intermediate mobile nodes can transmit the data until it reaches the destination node. In this paper, we performed an experiment using Network Simulation-2 (NS-2) for performance comparison of three routing protocols: AODV, DSDV and DSR. A quantitative analysis was based on average amount of data transmitted to the destination node (throughput), packets received per delivery ratio, end to end delay time, and amount of data communication for route discovery, in network environment with varying the number of nodes and ratio of maximum node pairs that could be connected. In this model, the node movement was randomized, the traffic pattern was constant bit rate (cbr), and the bandwidth was not restricted. The experimental results showed that DSDV protocol performed best for sending large amount of data to destination node, and was appropriate for ad-hoc network environment with high available resources (e.g. battery and bandwidth). The AODV protocol performed best for high packet received per delivery ratio, and was appropriate for ad-hoc network environment with limited resources. The DSR protocol performed worst, and also required more data communication than the other protocols for route discovery, and was appropriate for ad-hoc network environment with no bandwidth restriction.