WPAN, WLAN, WMAN, WWAN - really. Damn you people.
Personal area network is so damn persional 1-10 meters is pretty personal I suppose. I wish some people wouldn't come within 10 meters of me.
Wireless area network - duh.
Wireless metro area network - an entire city of wireless I can get on board with. I wish the area I live would get on the high speed free wireless internet train, not only would it save me some cash - but it would be such a progressive step for an area not known for it.
Wireless wide area networks - what a great time Verizon, AT&T, etc have deploying mega scale wireless. (by the way I understand a lot about multiplexing techniques - if someone can make code division multiplexing actually make any sense to me I would appreciate the comment).
Ad-hoc and IBSS (independent basic service set) are that shit that venders turn on all its laptops even when you don't want it. That way I can connect and share its inter-webs I suppose? Does anyone really do that?
BSS (basic service set) is the area served by one access point.
DS distributed system - this is where the access point connects to the wire.
SSID services set identifier is the name the access point beacons out to his client. It is 32 characters long and the associates with an mac-address.
BSSID - is the mac-address of the radio interface.
MBSSID - virtual macs are used for multiple seperate SSIDs.
ESS - Extended service set is the network (all APs) that are freely roamed within a singular network.
Repeaters extend the range of wireless, but they kill the throughput.
Bridging is when you connect two WLANs for the purpose of extending a wired network.
Root devices cannot communicate with other root devices
Nonroot devices can only communicate to root devices
Mesh networks are when back-hauling of data is used over wireless. A number of wireless access points connect via a less number of distributed systems.
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