A study on the effect of traffic patterns on Routing protocols in Ad-hoc network following RPGM Mobility model

Abstract

Mobile Ad-hoc networks(MANET)s are self organizing networks which can form a communication network without any fixed infrastructure. The constant bit rate (CBR) traffic is very well known traffic model for mobile Ad-hoc network. CBR traffic generates data packets at a constant rate. This constant rate packet generational is good enough for text data packets. The multimedia applications generally generate packets which sometimes increase and might be sometimes followed by some idle period. CBR traffic model does not accommodate the specific features of multimedia data. The day by day increase of multimedia data prompts us to investigate some other traffic models which can accommodate the specific features of these data. One such traffic model is Exponential traffic model which is based on exponential distribution. The other model is Pareto traffic model based on Pareto distribution. In this article, we have tried to study the behavior of mobile Ad-hoc network routing protocols under Exponential and Pareto traffic sources for nodes moving with Reference Point Group Mobility model (RPGM). To the best of our knowledge, this is the first attempt to analyze the effect of traffic patterns with Reference Point Group Mobility (RPGM) model on mobile ad hoc network routing. We have chosen the Normalized routing load, Packet Delivery Fraction and throughput as our figures of merit to compare various protocols. We found high Normalized Routing Load for both Exponential and Pareto traffic compared to CBR traffic in both Dynamic Source Routing (DSR) and Ad hoc On-demand Distance Vector protocol. The Packet Delivery Fraction is comparable in all types of traffic patterns and routing protocols. Throughput is high for Ad hoc On-demand Distance Vector (AODV) routing protocol across all traffic models.