Hello, everyone!
Today, I would like to share a brief intoduction on WLAN.
There have been an exponential growth in the number of internet users. While wired networks are very popular for their high speed and reliable connectivity, wireless networks have gained a huge popularity. Further, with newer 802.11 IEEE standards, such networks have also demonstrated the ability to provide a really high speed connectivity.
A wireless local area network (WLAN) is a wireless computer network that links two or more devices using a wireless distribution method within a limited area such as a home, school, computer laboratory, or office building. This gives users the ability to move around within a local coverage area and still be connected to the network, and can provide a connection to the wider Internet.
Most modern WLANs are based on IEEE 802.11 standards, marketed under the Wi-Fi brand name. Further, with new antenna designs the range of such networks has the potential to cover a significant area for providing connectivity.
Wi-Fi is a WLAN (Wireless Local Area Network) technology. It provides short-range wireless highspeed data connections between mobile data devices (such as laptops, PDAs or phones) and nearby Wi-Fi access points (special hardware connected to a wired network).
Advantages of WLAN:
A wireless local area network enables people to communicate and access applications and information
without wires. This provides freedom of movement and the ability to extend applications to different parts of a building, city, or nearly anywhere in the world. WLAN allow people to interact with e-mail or browse the Internet from a location that they prefer.
Types of Wireless LANs:
The Project 802.11 committee distinguished between two types of wireless LAN: Ad-Hoc and Infrastructure networks. The IEEE 802.11 has two basic modes of operation:
Ad hoc mode - In ad hoc mode, mobile units transmit directly peer-to-peer.
Infrastructure mode - In infrastructure mode, mobile units communicate through an access point that serves as a bridge to other networks (such as Internet or LAN).
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