Performance Evaluation and Throughput Formulation of TCP under Token Bucket Policer

Daisuke IKEGAMI  Yasuto NAKANISHI  Toshiaki TSUCHIYA  

IEICE TRANSACTIONS on Communications   Vol.E94-B    No.7    pp.1914-1923
Publication Date: 2011/07/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.1914
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network
TCP,  token bucket,  policing,  QoS,  

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Mechanisms to provide QoS for IP communication have been frequently discussed recently. For example, in ITU-T and ETSI, the Next Generation Network has been discussed, and there are many reports on providing QoS for real-time services using RTP. However, in the current Internet, Transmission Control Protocol (TCP) is a major transport-layer protocol, and many real-time services are using TCP. In this paper, we present a performance evaluation of TCP under the control of a token bucket policer, which is one of the most common policing functions, and derive a formula of TCP throughput. We also evaluate the accuracy of our model by comparing results of simulations and experiments.