Ad-hoc Networks

In Latin, ad hoc literally means 'for this purpose only'. An ad-hoc (or spontaneous) net-work is a small area network, especially one with wireless or temporary plug-in connec-tions. In these networks some of the devices are part of the network only for the duration of a communication session. An ad-hoc network is also formed when mobile, or portable devices, operate in close proximity of each other or with the rest of the network. When we beam a business card from our PDA (Personal Digital Assistant) to another, or use an IrDA (Infrared Data Association) port to print document from our laptop, we have formed an ad hoc network. The term 'ad hoc' has been applied to networks in which new devices can be quickly added using, for example, Bluetooth or wireless LAN (802.11x). In these networks devices communicate with the computer and other devices using wire-less transmission. Typically based on short-range wireless technology, these networks don't require subscription services or carrier networks.