Abstract

Mobile Ad hoc networks (MANET) are considered as promising communication networks in situations where rapid deployment and self-configuration is essential. In ad hoc networks, nodes are allowed to communicate with each other without any existing infrastructure. Typically every node should also play the role of a router. This kind of networking can be applied to scenarios like conference room, disaster management, battle field communication and places where deployment of infrastructure is either difficult or costly. Many routing protocols exist to enable communication in ad hoc networks like, DSR [2], AODV [1], DSDV [3], etc. All these protocols assume that the source and destination nodes can reach each other using a single or multi-hop path. But, there exist situations when connectivity between source and destination cannot be guaranteed always. DSR [2] delivers data in a MANET with the assumption that the network is connected DSR, fails when the network is partially connected, source and destination are in different partitions. Connectivity in the network is very low for less number of nodes in the network. As the density of nodes increases, connectivity improves. In this Paper we mainly focus on these kinds of networks.We discuss the challenges in Moblie ad hoc network ands more topology related details and the applicability of one of the existing routing schemes (DSR) on these networks in the forthcoming sections. In this paper we proposed SDSR(Smart DSR protocol) which deliver data in a partially connected ad hoc network.