Ad Hoc Networks
The ad hoc wireless network is basically a decentralized form of a wireless network. The network is not dependent upon the common wireless infrastructure which includes routers and access points that is why it is an ad hoc network. On wireless networks the ad hoc mode is the technique through which wireless devices directly communicate with each other. In this mode the wireless devices within a specific limit of each other locate and communicate with one another in the peer to peer fashion without using the central access points.
Now a day’s a lot of new forms of networks are available but the most basic wireless ad hoc networks were the PRNETs also known as the “Packet Radio” networks. These networks prevailed in the 1970s and were sponsored by the DAPRA.
To set up an ad-hoc wireless network, all of the wireless adapters should be shaped up for the ad-hoc mode against its alternative i.e. the infrastructure mode. Moreover, it is compulsory for all wireless adapters on the ad-hoc network to use the same channel number and the same SSID.
The ad-hoc network tends to highlight a small group of devices all in very close immediacy to each other. A very large ad hoc network is pretty difficult to handle and its performance suffers to a significant level due to the increase in the number of devices. Ad-hoc networks cannot be associated to the internet or to some wired LAN without installing a special-purpose gateway.
Ad hoc networks are not very costly you don’t have to spend a lot of money on the equipment and is very effective when there is a need for building a small and all wireless LAN quickly. Ad hoc networks are also used as temporary withdraw mechanisms incase if the commonly used infrastructure mode fails in operating rightly.