Abstract
Three typical routing protocols, Destination Sequence Distance Vector (DSDV), Dynamic Source Routing (DSR) and Ad-Hoc On-Demand Distance Vector (AODV), are analyzed and studied. In addition, three network performance indicators, which are end-to-end average delay (E2EAD), routing overhead (RO) and packet reception rate (PRR), are used to evaluating advantages and weaknesses of these three routing protocols. The simulation results, which are based on the NS2 (Network Simulator Version 2), show that AODV has balanced property in both E2EAD and PRR. However, AODV is inferior to DSDV and DSR in terms of RC. In addition, in view of feature of AODV, a modified AODV (MAODV) routing protocol for the environment of network topology that changes frequently is proposed in this paper. The experimental results show that the MAODV has superior properties in terms of E2EAD and RC.
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