An Energy Efficient and Cooperative Congestion Control Protocol in MANET

MANET is collection of mobile devices form a self-creating, self-organizing and self-administering wireless networks. Due to mobility of nodes it is not possible to establish fixed paths for message delivery through the network. Hence, congestion is happening and it is the key problem for MANET. Many routing protocols have been proposed to overcome the congestion in MANET. One of the popular routing protocol is AODV, but it depends on individual receivers to detect congestion and adjust their receiving rates.? Another common routing protocol is EERCCP, which is better than AODV but sometimes it fails when link failure happens to relay node or if relay node moves from its current group to another group then there is no other mechanism to select an alternative relay nodes i.e. lack of cooperativeness. Consequently, we proposed a routing protocol named as EECCCP, which utilizes user cooperation to reduce congestion. The proposed energy efficient and cooperative congestion control routing protocol (EECCCP), performs well better than both the AODV and EERCCP. The proposed scheme encorporates the benefits of energy efficiency and cooperativeness which in turn? reduces the congestion effectively. It also overcomes the disadvantages of existing multicast congestion control protocol. Moreover, the proposed scheme does not impose any significant changes on the queuing, scheduling or forwarding policies of existing network protocols. The simulation results have shown that our proposed protocol EECCCP has the about 95% better delivery ratio and throughput with about 85 % less delay and energy consumption when compared with the existing protocol AODV. It also has the about 65% better delivery ratio and throughput with about 60 % less delay and energy consumption when compared with the existing protocol EERCCP.