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Proceedings Paper

Hysteresis-based congestion control at the B-ISDN access
Author(s): Johannes Wissing
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Paper Abstract

Multiplexing of bursty sources and refined congestion control strategies are still the subject of numerous research activities. Broadband applications with very high peak-to-mean bitrate ratio and long silence periods like still picture video gave rise to different ideas of rate control at the B-ISDN network access. Contributions on Input Rate Control for source coded traffic as well as on Server Rate Control within a LAN/ATM Interworking Unit have recently been presented. This paper addresses a congestion avoidance strategy at the network access regarding the aggregated traffic of bursty sources. Depending on the number of active sources as well as on certain defined congestion levels the cell rate at the network access is controlled. The proposed analytical approach is based on the model of uniform and continuous arrival and service. The selected underlying Markov chain contains `split' states in order to handle the congestion correlation. The proposed model is extended to an adaptive Non-Markov system where the buffer filling level is evaluated using a switching hysteresis. This type of congestion measurement turns out to be very useful for an adaptive rate control mechanism that guarantees a certain quality of service while still achieving a good statistical gain. The analytical approach is confirmed by results of a computer simulation that is extended to the more complex case of adaptive rate control.

Paper Details

Date Published: 4 November 1993
PDF: 12 pages
Proc. SPIE 1974, Transport Technologies for Broadband Optical Access Networks, (4 November 1993); doi: 10.1117/12.161520
Show Author Affiliations
Johannes Wissing, Univ. of Hagen (Germany)


Published in SPIE Proceedings Vol. 1974:
Transport Technologies for Broadband Optical Access Networks

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