the very first thing, i think, is to figure out the special characteristics of the campus wireless network and then pick a suitable model. In general,
(1) to provide seamless coverage over the campuse and Qos-guaranteed service for students and faculties, a large number of Access Points (AP) are deploied in a density manner, and the coverage of neighboring APs overlaps.
Modeling: To model the distribution of the APs, I think it is ok to suppose that the layout of those APs are given and fixed.; To model the distibution of the user-equipments, you can use the tools from the stochastic geometry .
(2)the traffic are busty. Typcially, the network traffic drastically increases during the break, but quickly goes down during the classtime.
It depends on your research, normally you can check power signal strength, link quality, signal noise ratio, etc. There are many models are available to check the wireless LAN, you will find through the internet.