On wireless remote control switch kit Wikipedia the language links are at the top of the page across from the article title. A wireless network is a computer network that uses wireless data connections between network nodes. Wireless networking is a method by which homes, telecommunications networks and business installations avoid the costly process of introducing cables into a building, or as a connection between various equipment locations. The first professional wireless network was developed under the brand ALOHAnet in 1969 at the University of Hawaii and became operational in June 1971.

The first commercial wireless network was the WaveLAN product family, developed by NCR in 1986. Computers are very often connected to networks using wireless links, e. Terrestrial microwave communication uses Earth-based transmitters and receivers resembling satellite dishes. Terrestrial microwaves are in the low gigahertz range, which limits all communications to line-of-sight. Satellites communicate via microwave radio waves, which are not deflected by the Earth’s atmosphere.

Cellular and PCS systems use several radio communications technologies. The systems divide the region covered into multiple geographic areas. Each area has a low-power transmitter or radio relay antenna device to relay calls from one area to the next area. Wireless local area networks use a high-frequency radio technology similar to digital cellular and a low-frequency radio technology.

Wireless LANs use spread spectrum technology to enable communication between multiple devices in a limited area. Free-space optical communication uses visible or invisible light for communications. In most cases, line-of-sight propagation is used, which limits the physical positioning of communicating devices. For example, both Bluetooth radio and invisible infrared light provides a WPAN for interconnecting a headset to a laptop. 11 WLAN standards are marketed under the Wi-Fi brand name. Each node forwards messages on behalf of the other nodes and each node performs routing.

Wireless metropolitan area networks are a type of wireless network that connects several wireless LANs. WiMAX is a type of Wireless MAN and is described by the IEEE 802. Wireless wide area networks are wireless networks that typically cover large areas, such as between neighbouring towns and cities, or city and suburb. These networks can be used to connect branch offices of business or as a public Internet access system. A cellular network or mobile network is a radio network distributed over land areas called cells, each served by at least one fixed-location transceiver, known as a cell site or base station.