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

Dongkyun KIM
Hanseok BAE

IEICE TRANSACTIONS on Information and Systems   Vol.E89-D    No.1    pp.351-353
Publication Date: 2006/01/01
Online ISSN: 1745-1361
DOI: 10.1093/ietisy/e89-d.1.351
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Networks
MANET,  OLSR,  TCP-Vegas,  route change,  

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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.

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