"The Mobile Ad-hoc NETworks (MANETs) are wireless networks that have no fixed infrastructure. There are no fixed routers-instead each node acts as router and forwards traffic from other nodes. Since the nodes in a MANET are highly mobile, the topology changes frequently and the nodes are dynamically connected in an arbitrary manner. Wireless network adopts centralized transmission technique for transmission of power. But typical wireless ad hoc network do not have centralized coordinators for transmission of power, so it is difficult for a node in ad hoc network to predict the future transmissions of its neighbors."