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IEICE Transactions on Information and Systems 2006 E89-D(1):351-353; doi:10.1093/ietisy/e89-d.1.351
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Copyright © 2006 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Letters -- Networks

Improving the Performance of TCP-Vegas over OLSR MANET Routing Protocol

Dongkyun KIM1 and Hanseok BAE1

1 The authors are with the Department of Computer Engineering, Kyungpook National University, Daegu, Korea. E-mail: dongkyun{at}knu.ac.kr

IETF MANET (Mobile Ad Hoc Network) WG has standardized OLSR (Optimized Link State Routing) as its proactive routing protocol. In addition, TCP (Transmission Control Protocol) is still needed for MANET thanks to its suitability for smooth integration with the fixed Internet. In particular, TCP-Vegas is a well-known transport protocol that can efficiently take account of network condition. However, TCP-Vegas that requires an accurate BaseRTT estimation cannot be directly applied to MANET because a route change makes the estimated BaseRTT obsolete. We propose a technique to improve the performance of TCP-Vegas by considering the route change, and show the performance improvement through simulation study using the ns-2 simulator.

Key Words: MANET, OLSR, TCP-Vegas, route change

Manuscript received May 13, 2005.


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