Open AccessImproved virtual queuing and dynamic EPD techniques for TCP over ATM
Author(s) -
Yu-Hsueh Wu,
KaiYeung Siu,
Wenge Ren
Publication year - 1998
Language(s) - English
Resource type - Reports
DOI - 10.2172/666137
Subject(s) - computer science , computer network , queueing theory , fifo (computing and electronics) , fair queuing , throughput , network packet , network congestion , queue , tcp global synchronization , scheme (mathematics) , cubic tcp , quality of service , wireless , telecommunications , operating system , mathematics , fair share scheduling , mathematical analysis , round robin scheduling
It is known that TCP throughput can degrade significantly over UBR service in a congested ATM network, and the early packet discard (EPD) technique has been proposed to improve the performance. However, recent studies show that EPD cannot ensure fairness among competing VCs in a congested network, but the degree of fairness can be improved using various forms of fair buffer allocation techniques. The authors propose an improved scheme that utilizes only a single shared FIFO queue for all VCs and admits simple implementation for high speed ATM networks. The scheme achieves nearly perfect fairness and throughput among multiple TCP connections, comparable to the expensive per-VC queuing technique. Analytical and simulation results are presented to show the validity of this new scheme and significant improvement in performance as compared with existing fair buffer allocation techniques for TCP over ATM