Abstract: WiMAX is the short form of the Worldwide Interoperability for Microwave Access. Typically, fixed WiMAX networks have a higher-gain directional antenna installed near the client results in greatly increased range and throughput. Mobile WiMAX networks are usually made of indoor Customer Premises Equipment (CPE) such as desktop modems, compared to directional antennas but they are more portable. The mobility model is designed to describe the movement pattern of mobile users, and how their location, velocity and acceleration change over time. Since mobility patterns play a significant role in determining the protocol performance, it is desirable for mobility models to emulate the movement pattern of real life applications in a reasonable way. We have provided a categorization for various mobility models onto several classes based on their specific mobility characteristics. For some mobility models, the movement of the WiMAX node is likely to be affected by its movement history. The authors are aware that this performance comparison of mobility scenarios has not attempted in WiMAX Environments or IEEE 802.16 module. We have taken scenario file as IEEE 802.16 Standard in which we have implemented reactive and proactive routing protocols, In our TCL scripts which consist of various routing protocols such as AODV (Ad-hoc On-Demand Distance Vector Routing) and DSDV (Dynamic Destination Sequenced Distance-Vector Routing) than a particular WiMAX scenario or topology with various node densities i.e. 20 nodes, 40 nodes and 60 nodes. The protocol result metrics are Packet Delivery Ratio (PDR), End to End Delay and Throughput, by using network simulator (NS-2).
Keywords: WiMAX, AODV, DSDV, NS-2.35, IEEE 802.16