Performance Enhancement of Wireless Reactive Routing Protocols for Mobile Ad hoc Networks

Abstract

An Ad-hoc network is a wireless and infrastructure less network. A mobile Ad-hoc network (MANET) is formed from the collection of a number of wireless mobile devices without having any fixed infrastructure. Here each node can work as a source, destination or Routing node. The nodes in MANET are allowed to move freely in random pattern. The mobility and transmission power of mobile nodes plays an important role on performance of MANET Routing protocols. newlineMANET could be deployed in applications such as search and rescue, automated battlefields, disaster recovery, intelligent transportation and sensor networks. A basic hypothesis in ad-hoc networks is that each node can be used to send data packets among arbitrary sources and destinations. Hence, some kind of Routing protocol is required in order to make routing decisions. Many problems such as mobility and limited bandwidth are introduced in a wireless Ad-hoc environment which makes Routing complicated. Dynamic topology, Asymmetric links, Routing overhead and interference are challenges that make routing in mobile ad hoc networks a difficult task .The performance analysis of MANET depends on the routing scheme employed. Various Routing protocols have been discussed so far to improve the routing performance and reliability. On Demand MANET Routing protocols are considered to perform better than proactive protocols in highly dynamic and robust networks, therefore they are best suited to be tested against topologies with inconsistent densities. newlineObjectives of the research work newline1) To investigate the performance of Ad-hoc On demand Distance Vector (AODV) and test out its impact on Multipath routing in Mobile Ad-hoc Network (MANET). newline2) To investigate the performance of Dynamic Source Routing (DSR) and analyze its impact on Multipath routing in Mobile Ad-hoc Network (MANET). newline3) To combine Ad-hoc On demand Distance Vector (AODV) and Dynamic Source Routing (DSR) Protocols, resulting into Reactive Hybrid Routing Protocol and examine its performance in terms of Packet Delivery