Campus-Based Manet Mobility Model And Its Routing Performance Evaluation

MANET (Mobile Ad-Hoc Network) is a temporary self-managing wireless network consisting of mobile nodes without depending on the existing fixed backbone or base station. The goal of such MANET is to instantly setup a powerful communication network, to provide efficient services for data and multimedia transmission. Because MANET is a novel network and can be used in military and civilian applications, it becomes a hot topic in network research recently.MANET has many characteristics such as multi-hop and dynamic topology; therefore the existing routing protocol cannot be used in such a special net. In this thesis, we mainly analyze the node mobility and its influence to the routing protocols. Moreover, based on OMNET++, practical node mobile models and their routing performance are evaluated.First, the MANET concepts, classification, characteristics, node mobility, the routing protocols and the current research status are discussed. Based on the MANET routing performance testing and simplified node mobile model, a campus-based MANET node mobile model is proposed.Next, by using OMNET++ simulation package, extensive simulations have been carried out to the campus-based node mobile model. Based on our simulation, mainly to the on-demand routing protocol (AODV), the routing overhead, average delay and data packet delivery ratio are analyzed and compared. It is shown that, the routing performance of MANET varies with different mobility models, and significant differences result even with different parameters of the same mobile model. In order to obtain meaningful results, it is necessary to make essential simulation and testing to the practical MANET model.Finally, the thesis concludes by presenting work summary and future directions.