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TCP Congestion Control through Bandwidth Estimation Mechanism in MANET

Ramratan Ahirwal, Ganesh Lokhande, Yogendra Kumar Jain Published in

International Journal of Applied Information Systems
Year of Publication 2012
© 2010 by IJAIS Journal
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  1. Ramratan Ahirwal, Ganesh Lokhande and Yogendra Kumar Jain. Article: TCP Congestion Control through Bandwidth Estimation Mechanism in MANET. International Journal of Applied Information Systems 2(4):41-48, May 2012. BibTeX

    	author = "Ramratan Ahirwal and Ganesh Lokhande and Yogendra Kumar Jain",
    	title = "Article: TCP Congestion Control through Bandwidth Estimation Mechanism in MANET",
    	journal = "International Journal of Applied Information Systems",
    	year = 2012,
    	volume = 2,
    	number = 4,
    	pages = "41-48",
    	month = "May",
    	note = "Published by Foundation of Computer Science, New York, USA"


Mobile ad-hoc network is collection of temporary nodes that are capable of forming dynamic temporary network, self organize, and infrastructure less with nodes contains routing capability, improving the performance of Transmission Control Protocol (TCP) associated with the presence of multi-hop MANET is one of the research challenges in wireless mesh networks. Wireless mesh networks have large round trip time variations and these variations are dependent on the number of hops. The end-to-end TCP throughput degrades rapidly with increase in number of hops. This is one of the biggest problems of TCP over wireless mesh networks In this paper we present method for avoid congestion in MANET environment using bandwidth estimation technique . In our approach we use acknowledgement time intervals for bandwidth estimation in TCP flow, in our scheme we monitor the time spacing between received acknowledgements (ACKs) at the sender node and find out the available bandwidth of the connection between sender to destination, if available bandwidth is less then the actual data size so we decrease the data size according to available bandwidth and avoid congestion, and same time other sender node try to communicate any destination through same available path which is used by previously senders so new sender node and all other previously communicated sender node sends data according to available bandwidth of the intermediate nodes so we increase the network performance and provides congestion free communication.


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Mobile Ad Hoc Network, Tcp, Hybrid, Congestion, Congestion Control, Reno, Newreno, Vegas