Congestion Control in Mobile Ad Hoc Network using modified acknowledgement with secure channel

The mobile ad hoc network is self-configuring and dynamic in nature. Due to its dynamic topology node can join or leave any time and each node behaves as router or host which can deliver the packets from source to destination. Due to the heavy traffic load over network congestion occur. To avoid the congestion on network various congestion control mechanism has been developed but in this we use modified-ACK based scheme for node authentication in AODV protocol. The simulation of our proposed work is done on network simulator NS-2.34 and comparative analysis of our proposed methodology is done using performance metrics such as packet delivery ratio, throughput, end-end delay average jitter and routing load.   Keywords MANET, Congestion Control, AODV, ACK, PDR, Network Simulato