Choice of high and low thresholds in the rate-based flow control scheme

Y. C. Lai*, Ying-Dar Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


In a rate-based flow control scheme, the important issue is how to determine congestion occurrence and congestion relief. The most common method is to set two thresholds of queue length, a high threshold and a low threshold. The values of these two thresholds seriously influence the system performance. Hence the authors present the concept of 'best area' to determine how to set the high and low thresholds to guarantee good performance (i.e. cell loss probability is zero and utilisation is one, if it is possible). Some rules are also given to prevent unnecessary cell loss and under-utilisation, when good performance is not achieved due to too many connections or too large a propagation delay.

Original languageEnglish
Pages (from-to)95-100
Number of pages6
JournalIEE Proceedings: Communications
Issue number2
StatePublished - 1 Dec 1999

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