Keith Parsons of Wireless LAN Professionals comments:
What is Basic Service Set or BSS?
It’s the footprint of a single access point and all stations associated with it. Defined by all stations who associate with single access point. And in every frame they send they will acknowledge this fact by sending the BSSID or the mac address of the AP.
Great definition of a term you’ll use a lot in the wireless space. Check out more of the Geek Dictionary at the site.
Read more at: Geek Dictionary: Basic Service Set or BSS