Performance Evaluation of the Gateway Discovery Approaches under Varying Node Speed

Abstract

MANETs have emerged as a promising new technology due to their infrastructure-less mode of operation and rapid deployability. In order to facilitate the users with the huge pool of resources together with the global services and applications available from the Internet and for widening the coverage area of the MANET, there is a growing need to integrate the ad hoc networks to the Internet. However, due to the differences in the protocol architecture between MANET and Internet, we need gateways which act as bridges between them. The efficient discovery of gateway in hybrid network is considered as a critical and challenging task due to the scarcity of network resources. With increasing node speed and greater number of sources it becomes even more complex. In this paper, we have conducted a systematic simulation based performance study of the two major gateway discovery approaches using NS2 under different network scenarios. The performance analysis has been done on the basis of three metrics - packet delivery fraction, average end-to-end delay and normalized routing load.