What about a wireless access point if routers are not allowed?
The problem you'll have is the campus network agreement typically says no wireless networking allowed. The technical problem is this. Say you have 1000 students in a dorm, they all install wireless routers, access points, etc. Now you have frequency congestion, probable packet collisions and generally a usage that the network wasn't designed for. Honestly I think that more universities should have wireless setup in the dorms like they do everywhere else on campus; I don't really know why more don't do that.