Recently, IETF MANET (Mobile Ad Hoc Network) working group has standardized the reactive and proactive MANET routing protocols. In addition, work on using TCP (Transmission Control Protocol) to provide reliable data transmission has been performed for the purpose of smooth integration with the wired Internet. In the wired Internet, TCP-Vegas is a well-known transport protocol which takes into account existing network conditions. However, TCP-Vegas cannot be directly applied to MANETs because a route change can make the BaseRTT used over a previous path obsolete. Hence, this paper proposes the TCP-Vegas-adhoc protocol which is made aware of route changes and uses the correct BaseRTT values.
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