Have any security researchers investigated the possibility of abusing these coexistence mechanisms for malicious purposes? Could be worth checking out, I think.
On many networks you can just forge 802.11 disassociation frames and drop people off the wifi altogether. (In fact, enterprise wifi vendors will sell this to you as a feature - the premise being that you'll use it to keep corporate-owned laptops off unapproved access points - but there's potential for FCC trouble even there.)
Here's an interesting attack: Suppose there are three non-overlapping channels and 70 APs, most/all of which try to pick the least congested channel. Can you persuade 67 of the 70 APs that a particular channel is very congested and best avoided, while leaving that channel uncongested and usable for the few remaining APs? Can you do so without client cooperation from the three favoured APs?
