Development of Energy Efficient and Reliable Congestion Control Protocol for Multicasting in Mobile Adhoc Networks compare with AODV Based on Receivers

摘要

Mobile ad-hoc networks (MANETs) allow portable mobile devices to establish communication path without having any central infrastructure. Since there is no central infrastructure and the mobile devices are moving randomly, they may give rise to various kinds of problems, such as energy efficient and multicast congestion control. In this paper the problem of multicast congestion control is considered. Energy Efficient is one of the key issues in MANETs because of highly dynamic and distributed nature of nodes. Especially energy efficient is most important because all the nodes are battery powered. Failure of one node may affect the entire network. If a node runs out of energy the probability of network partitioning will be increased. Since every mobile node has limited power supply, energy depletion has become one of the main threats to the lifetime of the mobile ad-hoc network. So energy efficient in MANETs should be in such a way that, it uses the remaining battery power in an efficient way to increase the life time of the network. This paper work presents an energy efficient and reliable congestion control (EERCC) protocol for multicasting in MANETs. The proposed scheme overcomes the disadvantages of existing multicast congestion control protocols(AODV) which depend on individual receivers to detect congestion and adjust their receiving rates. The energy efficient and reliable congestion control protocol for multicasting in MANETs is implemented in three phases: In the first phase of EERCC protocol, a multicast tree routed at the source is build by including the nodes with higher residual energy towards the receivers. In the second phase an admission control scheme is proposed in which a multicast flow is admitted or rejected depending upon on the output queue size. In the third phase a scheme which adjusts the multicast traffic rate at each bottleneck of a multicast tree is proposed. Because of the on-the-spot information collection and rate control, this scheme has very limited control traffic overhead and delay. Moreover, the proposed scheme does not impose any significant changes on the queuing, scheduling or forwarding policies of existing networks. Simulation results shows that the proposed EERCC protocol has better delivery ratio and throughput with less delay and energy consumption when compared with existing protocol.