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Mitigating Congestion using Data Rate Control for MANET

Author : Sumendra Thakur and Mansi Gupta

Pages : 2887-2891
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In Mobile Ad hoc Networks (MANETs), congestion control and avoidance is a challenging issue due to node mobility and dynamic topology in networks. The occurrence of congestion is mainly due to bursty traffic, when incoming rate of data packets is higher than the sending rate of data packets at a node. Congestion leads to packet drop, long delay and wastage of network resources in the network. This paper proposes a technique for controlling and regulating the data sending rate from a sender based on the analysis of the dynamic queue length of intermediate nodes. Upon occurrence of congestion the intermediate nodes notify the source by using a distinct packet named “Congestion Indication Packet (CI Packet)”. According to CI Packet, the sender eventually decline its sending data rate, so that congestion can be evaded before experienced by intermediate nodes and ensures a reliable communication within MANETs. By extensive simulation, our proposed protocol is implemented in NS2 and attains better results in packet delivery ratio, end-to-end delay than the existing protocol.

Keywords: Mobile Ad hoc Networks (MANETs), Congestion Indication (CI) Packet, Queue length, Ad-Hoc on Demand Distance Vector (AODV).

Article published in International Journal of Current  Engineering  and Technology, Vol.4,No.4 (Aug- 2014)



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