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Dynamic Buffer Management Scheme Based on Rate Estimation in Packet-Switched Networks
KAIST (Korea Advanced Institute of Science and Technology). (COMIS)
2002 (English)In: Computer Networks, ISSN 1389-1286, E-ISSN 1872-7069, Vol. 39, no 6, 769-787 p.Article in journal (Refereed) Published
Abstract [en]

 While traffic volume of real-time applications is rapidly increasing, current routers do not guarantee minimum QoS values of fairness and drop packets in random fashion. If routers provide a minimum QoS, resulting less delays, more fairness, and smoother sending rates, TCP-friendly rate control (TFRC) can be adopted for real-time applications. We propose a dynamic buffer management scheme that meets the requirements described above, and can be applied to TCP flow and to data flow for transfer of real-time applications. The proposed scheme consists of a virtual threshold function, an accurate and stable per-flow rate estimation, a per-flow exponential drop probability, and a dropping strategy that guarantees fairness when there are many flows. Moreover, we introduce a practical definition of active flows to reduce the overhead coming from maintaining per-flow states. We discuss how proposed scheme motivates real-time applications to adopt TFRC.

Place, publisher, year, edition, pages
Elsevier, 2002. Vol. 39, no 6, 769-787 p.
Keyword [en]
congestion and flow control, packet network, buffer management, router mechanism
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-85860DOI: 10.1016/S1389-1286(02)00247-5ISI: 000177175000005OAI: oai:DiVA.org:kth-85860DiVA: diva2:500159
Note
QC 20120228Available from: 2012-02-28 Created: 2012-02-13 Last updated: 2017-12-07Bibliographically approved

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