18-07-2012, 12:13 PM
Wi-FiTechnology
[attachment=27915]
Wi-FiTechnologyOverview
Wireless networks where borne as LANs, but for developing countries’ applications they are more useful as MANsor even WANs
The enormous success of this technology has led to a dramatic price reduction of the radios, from $750 in 1992 to $30 in 2004, while transmission speed has increased up to 74 Mbps on the same 20 MHz channel
Station (STA) Architecture:
Device that contains IEEE 802.11 conformant MAC and PHY interface to the wireless medium, but does not provide access to a distribution system
Most often end-stations available in terminals (work-stations, laptops etc.)
Access-Point (AP) Architecture:
Device that contains IEEE 802.11 conformant MAC and PHY interface to the wireless medium, and provide access to a distribution system for associated stations
Most often infra-structure products that connect to wired backbonesPlatform
Configuration and Management of EWG
Enterprise wireless gateways are normally upgraded through use of TFTP in the same fashion as many switches and routers on the market today. Configuration backups can often be automated so that the administrator won't have to spend additional management time backing up or recovering from lost configuration files. Enterprise wireless gateways are mostly manufactured as rack-mountable 1U or 2U devices that can fit into your existing data center design.
[attachment=27915]
Wi-FiTechnologyOverview
Wireless networks where borne as LANs, but for developing countries’ applications they are more useful as MANsor even WANs
The enormous success of this technology has led to a dramatic price reduction of the radios, from $750 in 1992 to $30 in 2004, while transmission speed has increased up to 74 Mbps on the same 20 MHz channel
Station (STA) Architecture:
Device that contains IEEE 802.11 conformant MAC and PHY interface to the wireless medium, but does not provide access to a distribution system
Most often end-stations available in terminals (work-stations, laptops etc.)
Access-Point (AP) Architecture:
Device that contains IEEE 802.11 conformant MAC and PHY interface to the wireless medium, and provide access to a distribution system for associated stations
Most often infra-structure products that connect to wired backbonesPlatform
Configuration and Management of EWG
Enterprise wireless gateways are normally upgraded through use of TFTP in the same fashion as many switches and routers on the market today. Configuration backups can often be automated so that the administrator won't have to spend additional management time backing up or recovering from lost configuration files. Enterprise wireless gateways are mostly manufactured as rack-mountable 1U or 2U devices that can fit into your existing data center design.