Trabajo

Páginas: 3 (712 palabras) Publicado: 12 de julio de 2012
Christian

WLAN (1/3)

* A wireless local area network (WLAN) links two or more devices using some wireless distribution method (typically spread-spectrum or OFDM radio), and usually providinga connection through an access point to the wider internet. This gives users the mobility to move around within a local coverage area and still be connected to the network.
* OFDM: Orthogonalfrequency-division multiplexing

WLAN (2/3)

* Most modern WLANs are based on IEEE 802.11 standards, marketed under the Wi-Fi brand name.
* Wireless LANs have become popular in the home dueto ease of installation, and in commercial complexes offering wireless access to their customers; often for free.

WLAN (3/3)

* A WLAN typically extends an existing wired local area network.WLANs are built by attaching a device called the access point (AP) to the edge of the wired network. Clients communicate with the AP using a wireless network adapter similar in function to a traditionalEthernet adapter.

Architecture (1/6)
Stations
* All components that can connect into a wireless medium in a network are referred to as stations. All stations are equipped with wirelessnetwork interface controllers (WNICs). Wireless stations fall into one of two categories: access points, and clients. Access points (APs), normally routers, are base stations for the wireless network.Luna

Architecture (2/6)

* They transmit and receive radio frequencies for wireless enabled devices to communicate with. Wireless clients can be mobile devices such as laptops, personal digitalassistants, IP phones and other smartphones, or fixed devices such as desktops and workstations that are equipped with a wireless network interface.

Architecture (3/6)

Basic service set
*The basic service set (BSS) is a set of all stations that can communicate with each other. Every BSS has an identification (ID) called the BSSID, which is the MAC (Media Access Control) address of...
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