How do I get information on details of how WLAN packets are sent over the air and associated signaling that takes place?
You can learn about 802.11 physical layer signaling and data link protocols by downloading the IEEE standards from the following link: IEEE 802.11 Wireless LAN Standards
If you prefer reading a book on this topic, try 802.11 Wireless Networks: The Definitive Guide by Matt Gast (ISBN: 0596001835) or Wireless LANs by Jim Geier (ISBN: 0672320584). If you want to capture some WLAN packets and take a first-hand look at them, try downloading Network Chemistry's Packetyzer, which is based on the popular Ethereal LAN analyzer.
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