Wireless ch 7

Vast area, most common is the Internet. Wired medium

broad geographical areas,wireless medium, use cell phone technologies or propriety licensed wireless bridging technology

coverage for a city or surrounding suburbs. 802.16 standard

competition with other broadband surfaces such as DSL and cable, know as last mile delivery

communication between close computer devices, such as Bluetooth and infrared. communication between portals and LANs.

802.11 standard, networking for a building or campus environment. Use multiple 802.11 access points connected by a wired network backbone.

a half duplex device with switch like intelligence.

• enables delivery of MSDUs between the distribution system (DS) and a non IEEE 802.11 LAN via a portal.
• It changes the header from a wireless network to a wired network.

used to interconnect a basic service sets (BSS) via integrated LANs to create an extended service set (ESS)

• a logical physical medium used to connect access points
• Example is 802.3 medium

• system service built inside an access point.
• Manage association and reassociation.
• use layer 2 of the 802.11 MAC

doesn't care nor does it define onto which medium as access point translates and forwards data.

• a mechanism for wireless communication using a four-mac address format.
• It includes bridging, repeater ad mesh networks
• When an AP are deployed to provide coverage and backhaul.

• logical name to identify and 802.11 wireless network
• 32 characters and is case sensitive
• so that radio cards may identify each other in a process known as active scanning or passive scanning.

• Its the communicating device that make up a BSS are APS with one or more client stations.
• Stations that are embers of a BSS have a layer 2 connection are called associated.

• 48 bit MAC address of an access's points radio card
• Is a unique layer 2 identifier of each individual BSS.
• In eater a BSS or ESS topology the BSSID address is simply the MAC address of a single access point.
• For IBSS its the virtual address

• The physical area of coverage provided by an access point.
• Can have a fluid shape bc of AP transmit power, antenna gain and surrounding

• Its one or more basic service sets connected by a distribution system medium.
• Its a collection of multiple access points and their associated clients stations all united by a single DSM.
• APs have partial overlapping coverage cells.

• radio cards that make up an IBSS network consist of solely of client stations and no access points are deployed.
• It can have multiple client stations in one physical area communicating in an ad hoc fashion.

• In nonstandard topologies, workgroup bridge
• also in client statue or inside an access point.