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Earliest Deadline First scheduling with active buffer management for real-time traffic in the Internet

Authors Hei, XJ HKUST affiliated (currently or previously)
Tsang, DHK View this author's profile
Issue Date 2002
Source Telecommunication Systems , v. 19, (3-4), 2002, p. 349-359
Summary We studied the problem of QoS guarantee for differentiated services. A two-level hierarchical scheduling framework was deployed to separate QoS metrics. Due to its desirable property of minimizing the maximum packet lateness, the Earliest Deadline First (EDF) scheduling was adopted to provide the in-class scheduling for the time-sensitive traffic. We employed an EDF scheduler combined with an active buffer management scheme (CHOKe) to improve the fairness of resource allocation and to maintain a good delay performance for real-time applications. Simulation results showed that the proposed scheme can achieve a better delay performance and make a more fair bandwidth allocation between the real-time TCP and UDP connections than the First Come First Served (FCFS) scheduling with the drop-tail buffer management which is commonly deployed in traditional IP routers.
ISSN 1018-4864
Rights The original publication is available at
Language English
Format Article
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