Impact Of Community Based And Random Way-point Mobility Models On Tcp Performance In Mobile Ad Hoc Networks

A comprehensive evaluation and comparison of the impact that scenarios generated by Community based (CB) and Random way-point (RW) mobility models have on TCP performance is presented in this paper. The effect that AODV and DSR routing protocols have on TCP throughput, delay and congestion is also discussed. The past researches on TCP performance have focused on the use of Random way-point mobility model as the main mobility model but in this research we offer a different aspect by considering Community based mobility model. Pearson's r is used to find the correlation between TCP performance and relationships among node and we found that as relationships between nodes get stronger TCP performance also increases. We used another statistical tool, regression to proof the results we got using Pearson's r, regression proved that increase in relationships result in increased TCP performance. Simulation results and analysis show that performance of TCP over AODV is better than over DSR and has a more stable performance in Community based mobility model than in Random way-point mobility model. From the results it is clear that mobility patterns have an impact on the protocol performance hence it is suggested that mobility models like Community based mobility model be used in the evaluation of transport layer protocols.