Wireless Networks

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Presentation Description

A wireless LAN or WLAN is a wireless local area network that uses radio waves as its carrier. The last link with the users is wireless, to give a network connection to all users in a building or campus. The backbone network usually uses cables

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Presentation Transcript

Wireless Networks:

Wireless Networks Authors: Marius Popovici Daniel Crişan Zagham Abbas Cluj-Napoca, 24 Nov. 2003 Technical University of Cluj-Napoca Group 3250

Presentation Outline:

Presentation Outline Wireless Technology overview The IEEE 802.11 WLAN Standards Secure Wireless LANs Migrating to Wireless LANs (Cutting the cord)

Wireless?:

Wireless? A wireless LAN or WLAN is a wireless local area network that uses radio waves as its carrier. The last link with the users is wireless, to give a network connection to all users in a building or campus. The backbone network usually uses cables

Common Topologies:

Common Topologies The wireless LAN connects to a wired LAN There is a need of an access point that bridges wireless LAN traffic into the wired LAN. The access point (AP) can also act as a repeater for wireless nodes, effectively doubling the maximum possible distance between nodes.

Common Topologies:

Common Topologies Complete Wireless Networks The physical size of the network is determined by the maximum reliable propagation range of the radio signals. Referred to as ad hoc networks Are self-organizing networks without any centralized control Suited for temporary situations such as meetings and conferences.

How do wireless LANs work?:

How do wireless LANs work? Wireless LANs operate in almost the same way as wired LANs, using the same networking protocols and supporting the most of the same applications.

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