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Dynamic adaptive windows for high speed data networks: theory and simulations

Published: 01 August 1990 Publication History

Abstract

Recent results on the asymptotically optimal design of sliding windows for virtual circuits in high speed, geographically dispersed data networks in a stationary environment are exploited here in the synthesis of algorithms for adapting windows in realistic, non-stationary environments. The algorithms proposed here require each virtual circuit's source to measure the round trip response times of its packets and to use these measurements to dynamically adjust its window. Our design philosophy is quasi-stationary: we first obtain, for a complete range of parameterized stationary conditions, the relation, called the “design equation”, that exists between the window and the mean response time in asymptotically optimal designs; the adaptation algorithm is simply an iterative algorithm for tracking the root of the design equation as conditions change in a non-stationary environment. A report is given of extensive simulations of networks with data rates of 45 Mbps and propagation delays of up to 47 msecs. The simulations generally confirm that the realizations of the adaptive algorithms give stable, efficient performance and are close to theoretical expectations when these exist.

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        Published In

        cover image ACM SIGCOMM Computer Communication Review
        ACM SIGCOMM Computer Communication Review  Volume 20, Issue 4
        Sep. 1990
        316 pages
        ISSN:0146-4833
        DOI:10.1145/99517
        Issue’s Table of Contents
        • cover image ACM Conferences
          SIGCOMM '90: Proceedings of the ACM symposium on Communications architectures & protocols
          August 1990
          318 pages
          ISBN:0897914058
          DOI:10.1145/99508
        Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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        Association for Computing Machinery

        New York, NY, United States

        Publication History

        Published: 01 August 1990
        Published in SIGCOMM-CCR Volume 20, Issue 4

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