AN ENHANCED POWER COEFFICIENT AND HOP COUNT - AODV ALGORITHM (EPHC ? AODV) FOR CONGESTION CONTROL IN MANET

Mobile ad - hoc network is defined as the network in which nodes are communicated with each other without permanent network. Here nodes are itself performing as the router. In nodes are in changeable format that means they change network topologies time to time as they change their position. In congestion is main issue. Congestion means when transmit the number of packets across the network is larger than the capacity of the network then network happen to congested. Due to congestion the packets have to be deleted and also reduce the performance of the set of connections. To finding the congestion free shortest path is a major issue i n MANET. The proposed system modifies the existing PH - AODV algorithm. In this system used power coefficient and the hop count parameter to improve the performance of EAODV. And the nodes transmit the packets and waits for acknowledgement for the threshold phase of time. If the acknowledgement not received with in threshold phase then the node broadcast again to select alternate path. Here we analyze the performance of proposed system which is better than existing system by using various performance paramete rs on different number of nodes namely packet delivery ratio, average end to end delay ratio, packet loss ratio. It is practical that the new protocol is much better than EAODV.