TECHNOLOGY NEWS

Wireless networks, as its name implies, perform data transfer without the presence of a twisted pair cables or optical fibers. In the case of a network² of this type usually have to deal with the use of microwaves as a medium for transferring signals, but also using infrared. The vast majority of today's wireless networks are designed in accordance with IEEE 802.11, which includes the physical layer specification, and a unique MAC address. Although most modern buildings, there are cable networks, but in some cases it is necessary to use a wirelessnetwork. First of all wireless networks use in places where running wires is difficult, is associated with high costs of installation or because of the architecture of the environment, it is absolutely impossible. In addition, wireless networks are ideal for the objects with finished interiors, as the wireless transmission does not require the forging of walls and floors to running cables, which also reduces installation costs. Communication technologies used in IP networks can be divided into two basic categories: Wireless Local Area Network (WLAN - Wireless Local Area Network) - wireless IPnetwork designed for communication over short distances. Because of its capacity is used mostly in communications inside buildings. All Local Area Network LAN the standards have been carefully formulated, and the devices of different manufacturers can work stably. Wireless LAN can be used together with an Ethernet wirednetwork. As in the case of Ethernet and here we distinguish several standards, which differ in the frequency of work capacity and the effective range of data transmission.