Simulative investigation of network scalability over MANET routing protocols

Abstract

The important feature that differentiates Mobile Ad-hoc NETworks (MANETs) to other Wireless or Wired Networks is the density of the nodes and mobility. MANET is a Network without Infrastructure, in which each node acts as a data sender, sink and router. Node density and Mobility are the key features that differentiate the MANET from the other wired and wireless networks. The self-configuring infrastructures without a network of mobile devices are connected via wireless connections. Any device on the MANET network can move to any direction and it frequently changes its connections with other devices. This network is an association of wireless nodes which may be dynamically configured at any time and from any location without utilizing the network infrastructure that is already in place. In multi-hop routing mode, nodes within radio range use other nodes as relays while distant nodes communicate directly over wireless links. The density of nodes or network scalability implies the quantity of nodes in the designed network scenario. The routing protocols are therefore designed for adapting the dynamic topology change while maximize its packet delivery ratio while minimize latency and throughput, with minimal number of packet losses and average jitter. Many researchers have been done the research work on MANET Routing Protocols. In this article, four routing protocols are used for the simulated scalable ad-hoc MANET implementations. The scalability refers to the variation in the number of nodes in a designed network scenario. For this research work, four scalable networks (25, 50, 75 100) are discussed. The five performance metrics are analyzed over four categories of node densities. The experimental results show that Ad Hoc Demand Vector (AODV) is 13.65% performed well in throughput than the other protocols; Dynamic Source Routing (DSR) is 12.66% performed well in goodput; DSR is 65% performed better than other protocols in the packet received; DSR is 10.3% performed better than other protocols in the received rate.