Date Added: Apr 2013
The ad hoc network is characterized by its dynamic topology. At any time, a node can change it position in the network. This characteristic reduce configuration and the maintenance cost. Instead of using a fixed infrastructure in charge of routing, the nodes in the network collaborate to forward the neighbors traffic. This means that the routing algorithm is distributed on all nodes. Because of the dynamic nature of ad hoc networks the classic routing protocols can't be directly applied. In general, the classic routing protocols consider that the topology is fix and the traffic overhead as unimportant. This doesn't apply to ad hoc network because of the nodes limited resources (bandwidth and energy) and their mobility.