Impact of Mobility Models on MANETs Routing Protocols

In the Mobile Ad-hoc Networks (MANETs) the availability of a node is an important issue such as in rescue and military operations etc. In this reference the mobility patterns of a mobile node play an important role. Generally a simulation study is conducted to study the behavior of node mobility in an ad-hoc network. To get the optimum results from simulations several parameters including the mobility models, traffic patterns, pause time and simulation area must be used properly. Random Waypoint, Group Mobility, Freeway, RPGM models is used to evaluate the performance of routing protocols. It has been observed that the protocol performance may change drastically across mobility models and performance rankings of protocols may vary with the mobility models. In this paper, we have done the comparative study of mobility models on MANETs routing protocols. It has been observed that the protocols like AODV, DSDV and HSR perform better with RPGM model in compared to Random Waypoint model. However, the Random Waypoint model is widely accepted due to its simplicity of implementation and analysis.