A wireless network is a computer network that uses wireless data connections between network nodes.
The wireless network is a method by which households, telecommunications networks and commercial facilities avoid the costly process of introducing cables into a building or as a connection between various equipment locations. Wireless telecommunications networks are generally implemented and managed through radio communication. This implementation takes place at the physical level of the network structure of the OSI model.
Examples of wireless networks include cell phone networks, wireless local area networks, wireless sensor networks, satellite communication networks and terrestrial microwave networks.
Types of wireless networks
Wireless personal area networks connect devices within a relatively small area, which is generally within reach of a person. For example, both the Bluetooth radio and the invisible infrared light provide a WPAN for interconnecting a headset to a laptop. ZigBee is also compatible with WPAN applications. Wi-Fi PANs are becoming commonplace as device designers begin to integrate Wi-Fi into a variety of consumer electronic devices. The capabilities of Intel “My WiFi” and Windows 7 “Wi-Fi virtual” have made the Wi-Fi PANs simpler and easier to configure and configure.
Wireless LANs are often used to connect to local resources and the Internet
A wireless local area network links two or more devices over a short distance using a wireless distribution method, which generally provides a connection through an access point for Internet access. The use of broad spectrum technologies or OFDM can allow users to move within a local coverage area and still remain connected to the network.
Products that use the IEEE 802.11 WLAN standards are marketed under the Wi-Fi brand.
Fixed wireless technology implements point-to-point links between computers or networks at two distant locations, often using dedicated laser-beam or modulated microwave light on line-of-sight routes. It is often used in cities to connect networks in two or more buildings without installing a cable link.
Ad hoc wireless network
A wireless ad hoc network, also known as a wireless mesh network or mobile ad hoc network, is a wireless network formed by radio nodes organized in a mesh topology. Each node forwards messages on behalf of the other nodes and each node performs routing. Ad hoc networks can “autocure”, automatically redirect around a node that has lost power. Several network layer protocols are required to perform ad hoc mobile networks, such as distance-sequenced distance vector routing, associativity-based routing, ad hoc distance-to-order-routing routing, and dynamic-origin routing.