Queue Dynamics With Window Flow Control
2010 (English)In: IEEE/ACM Transactions on Networking, ISSN 1063-6692, E-ISSN 1558-2566, Vol. 18, no 5, 1422-1435 p.Article in journal (Refereed) Published
This paper develops a new model that describes the queueing process of a communication network when data sources use window flow control. The model takes into account the burstiness in sub-round-trip time (RTT) timescales and the instantaneous rate differences of a flow at different links. It is generic and independent of actual source flow control algorithms. Basic properties of the model and its relation to existing work are discussed. In particular, for a general network with multiple links, it is demonstrated that spatial interaction of oscillations allows queue instability to occur even when all flows have the same RTTs and maintain constant windows. The model is used to study the dynamics of delay-based congestion control algorithms. It is found that the ratios of RTTs are critical to the stability of such systems, and previously unknown modes of instability are identified. Packet-level simulations and testbed measurements are provided to verify the model and its predictions.
Place, publisher, year, edition, pages
2010. Vol. 18, no 5, 1422-1435 p.
Congestion control, stability
Research subject SRA - ICT
IdentifiersURN: urn:nbn:se:kth:diva-26232DOI: 10.1109/TNET.2010.2047951ISI: 000283446200007ScopusID: 2-s2.0-77958153771OAI: oai:DiVA.org:kth-26232DiVA: diva2:399310
FunderSwedish Research Council, 621-2001-2110
QC 201102212011-02-212010-11-212012-03-20Bibliographically approved