NDLI: A testbed implementation of explicit rate based ABR service via a dual proportional-plus-derivative controller

Content Provider	IEEE Xplore Digital Library
Author	Kolarov, A. Ramamurthy, G.
Copyright Year	1997
Description	Author affiliation: NEC Res. Inst., Princeton, NJ, USA (Kolarov, A.)
Abstract	An explicit rate (ER) based congestion control scheme to support a class of best effort service known as available bit rate service (ABR) has been proposed by the ATM Forum. In this scheme, the network informs the sources from time to time, the maximum rate at which they can transmit. We present an all software based implementation of one variant of this control scheme. We apply principles of control theory and implement the ER scheme via a dual proportional-plus-derivative controller (DPDC). We compare the performance of the DPDC scheme with the explicit forward congestion indication (EFCI) scheme, where a single bit is used to convey to the source the state of the network. We have studied the transient performance of the control in the presence of high priority cross traffic. The experimental results have been obtained from an ATM testbed which consists of two ATM LANs, one located in Princeton (USA) and the other in Berlin (Germany), that are connected by a T1 link. The results show that the DPDC scheme is very stable with good transient response, even under extreme loading conditions and very long propagation delays. The EFCI mechanism on the other hand is fundamentally oscillatory in nature and can lead to large cell loss.
Starting Page	806
Ending Page	811
File Size	680936
Page Count	6
File Format	PDF
ISBN	0780341988
DOI	10.1109/GLOCOM.1997.638441
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-11-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Testing Switches Proportional control Erbium PD control Asynchronous transfer mode Bit rate Propagation delay Virtual colonoscopy Traffic control
Content Type	Text
Resource Type	Article

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