Publication No 32831

Author(s)

Bodamer, S.*

Title

A new scheduling mechanism to provide relative differentiation for real-time IP traffic

Topics

Broadband Networks; Internet

Methods

Traffic Engineering; Performance Evaluation

Keywords

INTERNET; SERVICE INTEGRATION; SERVICE DISCIPLINE; SCHEDULING; RESOURCE MANAGEMENT; REAL TIME; PRIORITY; PERFORMANCE EVALUATION; INTEGRATED SERVICE; DUE TIME

Abstract

In this paper, design alternatives for supporting real-time traffic in a differentiated services IP network node are studied. A scheduling algorithm called weighted earliest due date (WEDD) is proposed that provides tunable delay differentiation for applications like video or voice over IP. WEDD enhances the earliest due date (EDD) scheduling mechanism in such a way that not only different delay bounds but also different deadline violation probabilities are provided. The ratios of violation probabilities in different classes are easily specified by a set of parameters. Simulation studies are performed to show that the scheduler is able to maintain the specified ratios under various traffic conditions in short as well as in long time scales.

Year

2000

Reference entry

Bodamer, S.
A new scheduling mechanism to provide relative differentiation for real-time IP traffic
Proceedings of IEEE GLOBECOM 2000, San Francisco, November 2000, pp. 646-650

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