Wi-Fi IS 802.11a and 802.11b. Those two subgroups describe the physical and data link protocols used in Wi-Fi. So by definition if you look at those standards you are looking at those 2 layers and how Wi-Fi uses them. As soon as you hit the network layer you are out of the scope of Wi-Fi.
So having said that, the standards are available in pdf form from the IEEE themselves, and I beleive those contain the info you are looking for. Go here: http://standards.ieee.org/getieee802/download/802.11a-1999.pdf http://standards.ieee.org/getieee802/download/802.11b-1999.pdf http://standards.ieee.org/getieee802/download/802.11b-1999_Cor1-2001.pdf http://standards.ieee.org/getieee802/download/802.11d-2001.pdf
There's the 802.11a, 802.11b, 802.11b supplement, and 802.11d specs. Everything you ever wanted to know about Wi-Fi, and a whole lot you really don't care about. Happy reading.