Wednesday, 24 November 2010

Wlan data transmission

A WLAN data transmission occurs over radio signals that are sent out from a wireless router and received by network adapters within individual workstations. This allows for one DSL line to be shared by many and brings the ability to share files and resources from a central point in the network. In a managed network in an office environment, this will be done from a server, and a network administrator will govern all things on there, having special privileges to access it. The fingers that are kept out of the server pie will be beneficial, as the server will be the heart of the entire network. Usually the files and software applications will be stored in that central point to be accessed by the stations on the same network.

The ability to file share is something that made the WLAN data transmission capabilities grow. It stemmed from the cabled LAN networks, and works in exactly the same way, except the information is sent through the air via radio waves instead of being sent through cables. This freed up the office workspace of a lot of cabling problems, as well as the expense of having to install new cabling and access points when users needed to be added. Having physical connections to the network was limited by port access on routers, but with a wireless network, as many users can be added without having to worry over the logistics of running cables.

Simply with a network adaptor in their computer, the user will be able to receive WLAN data transmission. This is a fairly straightforward set up and there is no limitation to situation within the environment. As long as the computer is within range of the wireless signal, then they can gain access. The network administrator will set up all access privileges and the connection should be immediate and hassle free from the end user's point of view. This ability to send data wirelessly was a big step forward in the efficiency of sharing not only files, but internet connections too, which can lead to things such as VOIP being used by all users on the network from that initial single connection.

The WLAN data transmission channel is essentially a narrow band of frequency. Wireless networks run over frequencies of 802.11a (5 GHz) and 802.11g (2.4 GHz) standards. This allows for a lot of individual channels within those bands to give good coverage over a distance. The stronger the network range the better the speeds will be, and it is important that the network is planned well to avoid any interference issues which can disrupt the signal. Wireless network signals are efficient and fast enough to handle the rigors of every day office life.

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