DETECTION AND REMOVAL OF PACKET DROPPER NODES FOR CONGESTION CONTROL OVER THE MANET

Packet Dropper nodes is a severe problem in MANET and they not only are harmful for the sender and receiver but they also lead to congestion in mobile adhoc networks as the sender may get involved in sending packets again and again as there is no acknowledgement from the receiver. Mobile ad hoc network is wireless network of mobile nodes, with no centralized management and control. Network congestion leads to reduced throughput, routing and lifespan, etc. of a network. Situation is worst when packet dropper nodes will send an acknowledgement to the sender and never forwards the packet ahead. Therefore they require proper attention and elimination from the network. In this paper, a new technique is being proposed to reduce the packet dropping nodes from the network by using a reliability factory which is increased on acknowledgement received from the receiver and all sender making decision to send a packet through a node having higher reliability factory. For calculating throughput, simulations has been created using NS2.

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