Abstracto

AN IMPROVED AODV ROUTING PROTOCOL FOR MOBILE AD-HOC NETWORKS

Mrs. Sangeeta Kurundkar , Apoorva Maidamwar

Mobile Ad-hoc Network (MANETs) is self-configuring network of mobile nodes connected by wireless links. Self-configurability and fast deployment feature of the MANET makes it most attractive choice for users. Routing in such networks is a key issue which decides network performance. Ad Hoc On-Demand Distance Vector (AODV) is one of the widely used reactive routing algorithms. Energy consumption and delay are the main concern for a number of researchers. Due to unbalanced node usage, some of the battery powered nodes drain out faster than others. This leads to route re-discovery causing larger average end to end delay and more control overhead. In this paper we are presenting an improved AODV (I-AODV) protocol. The proposed protocol introduces a stability factor which conserves and stabilizes energy among the nodes, and a delay reduction mechanism which reduces the average end-to-end delay of the network. NS-2 simulator is used to compare performances of AODV and I-AODV. Simulation results are observed for wireless network scenarios with variation of node mobility, pause time, network area and packet sent rate. The results show that the energy consumption and end to end delay in mobile scenarios decreases significantly, without much affecting the other QoS parameters. In addition proposed protocol improved packet delivery