Performance Variation of Routing Protocols with Mobility and Scalability in MANET

Abstract

The network in which nodes are mobile and these nodes communicate with each other by a wireless system not including any infrastructure is known as Mobile Ad HOC Network. Due to mobility of the nodes in MANET, routing a packet from source to destination becomes more difficult. So, many routing protocols have been purposed with reference to MANET but in a scenario of large nodes with high mobility no protocol is proved to be that efficient due to some particular limitation of that protocol. Therefore, mobility and scalability are alarming issue in mostly all protocols which support routing. The routing depends on the protocol; therefore, mobility and scalability of different routing protocols DSR, AODV and OLSR are evaluated in different network sizes with varying mobility rate. Firstly, the simulation environment is provided by varying some important parameters like pause time, speed and variation in number of nodes together. Then comparison between the three protocols is done to determine the best protocol in real-time scenario. Performance when measured on high scalability on a simulation of OLSR protocol as compared to that of AODV and DSR, the results deduced were far better.