DefinePK

Abstract

Mobile Ad Hoc Network (MANET) is a collection of wireless mobile nodes dynamically forming a tentative network without the use of any existing network infrastructure or centralized administration. Nodes of these networks function as routers which discovers and maintains the routes to other nodes in the network. In such networks, nodes are able to move and synchronize with their neighbors. Due to mobility, connections in the network can change dynamically and nodes can be added and removed at any time. In this paper, we compared and evaluated the performance of four routing protocols in MANET: Ad hoc On-demand Distance Vector (AODV), Ad-hoc on-demand multipath distance vector (AOMDV), Destination-Sequenced Distance-Vector routing (DSDV) and Dynamic Source Routing (DSR). Network Simulator version 2.35 (NS2) was used to perform the performance study. The performance of the routing protocols was evaluated based on the routing overhead, average end-to-end delay, packets delivery ratio and packet loss ratio. The simulation results shown that AODV and DSR have better performance than AOMDV and DSDV on varying the network size, whilst DSR, AOMDV and AODV are better than DSDV on varying node velocity.