Improvement of the mechanism of congestion avoidance in mobile networks

Congestion control is a key problem in mobile ad hoc networks (MANET). The standard congestion control mechanism of the Transmission Control Protocol (TCP) is not able to handle the special properties of a shared wireless multi-hop channel well. In particular, the frequent changes of the network topology and the shared nature of the wireless channel pose significant challenges. Many approaches have been proposed to overcome these difficulties. In this paper, a new approach Multipath Load Balancing and Rate Based Congestion Control (PROPOSED METHOD) based on rate control mechanism for avoiding congestion in network communication flows . The proposed approach contains an adaptive rate control based technique in which the destination node copies the estimated rate from the intermediate nodes and the feed back is forwarded to the sender through an acknowledgement packet. Since the sending rate is adjusted based on the estimated rate. Simulation results show that proposed technique has better packet delivery ratio and also controls the congestion in more effective manner.

Keywords:

Mobile AdhocNetworks , Congestion control , TCP , Rate Control