12-10-2010, 06:12 PM
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Wireless LAN (WLAN)
INTRODUCTION
Wireless LAN (WLAN) is a flexible data communication system implemented as an extension to a wired LAN within a building or campus. WLANs transmit and receive data over the air by electrical signals, minimizing the need for wired connections. The advent of WLAN opened up a whole new definition of what a network infrastructure can be. No longer does an infrastructure need to be solid and fixed, difficult to move and expensive to change. Instead it can move with the user and change as fast as the organization does.
Thus WLANs combine data connectivity with user mobility. Today it provides wireless access to vital network resources such as large, multi location enterprises, small and medium enterprises as well as hotels and hospitals, airports and homes. They are being widely recognized as viable, cost effective general purpose solution in providing real-time access to information and are reshaping the local area network landscape.
Wireless LANs are based on a set of technologies known by the IEEE specification number, 802.11 or by its synonymous trademarked name, Wi-Fi™ and is gaining popularity due to fact that it operates in the unlicensed ISM(Industrial Scientific & Medical) band (2.40 GHz to 2.484 GHz, 5.725 GHz to 5.850 GHz)
[attachment=5774]
[attachment=5775]
[attachment=5776]
Wireless LAN (WLAN)
INTRODUCTION
Wireless LAN (WLAN) is a flexible data communication system implemented as an extension to a wired LAN within a building or campus. WLANs transmit and receive data over the air by electrical signals, minimizing the need for wired connections. The advent of WLAN opened up a whole new definition of what a network infrastructure can be. No longer does an infrastructure need to be solid and fixed, difficult to move and expensive to change. Instead it can move with the user and change as fast as the organization does.
Thus WLANs combine data connectivity with user mobility. Today it provides wireless access to vital network resources such as large, multi location enterprises, small and medium enterprises as well as hotels and hospitals, airports and homes. They are being widely recognized as viable, cost effective general purpose solution in providing real-time access to information and are reshaping the local area network landscape.
Wireless LANs are based on a set of technologies known by the IEEE specification number, 802.11 or by its synonymous trademarked name, Wi-Fi™ and is gaining popularity due to fact that it operates in the unlicensed ISM(Industrial Scientific & Medical) band (2.40 GHz to 2.484 GHz, 5.725 GHz to 5.850 GHz)
