Ad Hoc Network!

A wireless ad hoc network (WANET) or mobile ad hoc network (MANET) is a decentralized type of wireless network.

The network is ad hoc because it does not rely on a pre-existing infrastructure, such as routers in wired networks or access points in wireless networks. Instead, each node participates in routing by forwarding data for other nodes, so the determination of which nodes forward data is made dynamically on the basis of network connectivity and the routing algorithm in use.