Scalable parallel simulations of wireless networks with WiPPET: Modeling of radio propagation, mobility and protocols

We review the design, selected applications and performance of WiPPET (Wire less Propagation and Protocol Evaluation Testbed), a general parallel simul ation testbed for various types of wireless networks. WiPPET has been writt en in TeD/C++, an object-oriented modeling framework that isolates network modeling from the underlying parallel discrete event simulator. We describe the techniques for modeling radio propagation (long and short-scale fading and interference) and protocols that promote scalability of parallel simul ations at session and packet time-scales. We outline two selected applicati ons of WiPPET: integrated radio resource management in a mobile wireless ne twork; and packet losses due to mobility and short-scale fading over a radi o link. We illustrate the efficiency of the simulator under two partitionin g schemes with parallel performance data obtained using the Georgia Time Wa rp optimistic simulator.