Agent Based Congestion Control Routing for Mobile Ad-hoc Network

In Mobile Ad hoc Networks (MANETs) congestion occurs due to the packet loss and it can be effectively reduced by involving congestion control scheme which includes routing algorithm and a flow control at the network layer. In this paper, we propose to design and develop an agent based congestion control technique for MANETs. In our technique, the information about network congestion is collected and distributed by mobile agents (MA). The nodes are classified into four categories based on its traffic class. The MA measures the queue length of the various traffic classes and the channel contention and estimates the total congestion metric to find the minimum congestion level in the network. The congestion metric is applied in the routing protocol to select the minimum congested route. By simulation results, we show that our proposed technique attains high delivery ratio and throughput with reduced delay when compared with the existing technique.