Supporting Excess Real-time Traffic with Active Drop Queue

Loading...
Thumbnail Image
Penn collection
Departmental Papers (ESE)
Degree type
Discipline
Subject
QoS
Queue Management
Real-Time
Funder
Grant number
License
Copyright date
Distributor
Related resources
Author
Contributor
Abstract

Real-time applications often stand to benefit from service guarantees, and in particular delay guarantees. However, most mechanisms that provide delay guarantees also hard-limit the amount of traffic the application can generate, i.e., to enforce to a traffic contract. This can be a significant constraint and interfere with the operation of many real-time applications. Our purpose in this paper is to propose and investigate solutions that overcome this limitation.We have four major goals: (1) guarantee a delay bound to a contracted amount of real-time traffic; (2) transmit with the same delay bound as many excess real-time packets as possible; (3) enforce a given link sharing ratio between excess real-time traffic and other service classes, e.g., best-effort; (4) preserve the ordering of real-time packets, if required. Our approach is based on a combination of buffer management and scheduling mechanisms for both guaranteeing delay bounds, while allowing the transmission of excess traffic. We evaluate the “cost” of our scheme by measuring the processing overhead of an actual implementation, and we investigate its performance by means of simulations using video traffic traces.

Advisor
Date Range for Data Collection (Start Date)
Date Range for Data Collection (End Date)
Digital Object Identifier
Series name and number
Publication date
2006-07-01
Journal title
Volume number
Issue number
Publisher
Publisher DOI
Journal Issue
Comments
Copyright 2006 IEEE. To appear in IEEE/ACM Transactions on Networking, Volume 14, Issue 5, October 2006, pages 965-977. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Pennsylvania's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it
Recommended citation
Collection