Worcester Polytechnic Institute Electronic Theses and Dissertations Collection

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Author NameKannan, Hariharan
Email Address harik at cs.wpi.edu
TitleTCP-Carson: A loss-event based Adaptive AIMD algorithm for Long-lived Flows
DepartmentComputer Science
  • Prof. Mark L. Claypool, Advisor
  • Prof. Robert Kinicki, Co-Advisor
  • Prof. David Finkel, Reader
  • Prof. Micha Hofri, Department Head
  • Keywords
  • Loss
  • TFRC
  • AIMD
  • TCP
  • Date of Presentation/Defense2003-04-29
    Availability unrestricted


    The diversity of network applications over the Internet has propelled researchers to rethink the strategies in the transport layer protocols. Current applications either use UDP without end-to-end congestion control mechanisms or, more commonly, use TCP. TCP continuously probes for bandwidth even at network steady state and thereby causes variation in the transmission rate and losses. This thesis proposes TCP Carson, a modification of the window-scaling approach of TCP Reno to suit long-lived flows using loss-events as indicators of congestion. We analyzed and evaluated TCP Carson using NS-2 over a wide range of test conditions. We show that TCP Carson reduces loss, improves throughput and reduces window-size variance. We believe that this adaptive approach will improve both network and application performance.

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