Abstract: Modeling is one of the most important tools in wireless system research. It's the foundation of simulation experiment, and relates to many fields, such as statistical characteristics modeling, parameters estimation, optimization of the algorithm and organization of all the models. Firstly, this paper summarized the common wireless systems, and introduced the metrics. Secondly, channel, topology, traffic and protocols behavior were researched in details, mainstream tools were evaluated. Finally, existing problems and research trend were analyzed.

Key words: Wireless network,Channel, Topology, Traffic,Protocols behavior