FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Explanation: The extended service set is a part of the IEEE 802.11 WLAN architecture and is used to expand the range of the basic service set by allowing connection of multiple basic service sets.

Detailed explanation-2: -An extended service set (ESS) is one or more interconnected basic service sets (BSSs) and their associated LANs. Each BSS consists of a single access point (AP) together with all wireless client devices (stations, also called STAs) creating a local or enterprise 802.11 wireless LAN (WLAN).

Detailed explanation-3: -The Basic Service Set is a term used to describe the collection of Stations which may communicate together within an 802.11 network. The BSS may or may not include AP (Access Point) which provide a connection onto a fixed distribution system such as an Ethernet network.

Detailed explanation-4: -An Extended Service Set is comprised of a number of IEEE 802.11 BSS (Basic Service Set) and enables limited mobility within the WiFi network. Stations are able to move between BSS within a single ESS yet still remain connected to the fixed network and so continue to receive emails etc.

Detailed explanation-5: -In other words, we can say that, BSS is a group of wireless devices served by a a single Access Point (AP). All the devices in a BSS, use the same channel to communicate. Every BSS has a string logical name that is advertsed by Access Point. This identifier is called Service Set Identifier (SSID).