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Mathematical Analysis of Westwood+ TCP Congestion Control

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Overview TCP congestion control is based on an Additive-Increase/Multiplicative-Decrease (AIMD) probing paradigm aimed at adapting the sending rate of TCP data sources to match the Internet time-varying available bandwidth. Westwood+ TCP has been recently proposed to improve the tracking of available bandwidth of classic TCP. It is based on an end-to-end estimate of the available bandwidth, which is obtained by properly counting and filtering the stream of acknowledgement packets. The estimate is used to adaptively decrease the congestion window and slow start threshold after congestion so that it can be said that Westwood+ TCP substitutes the classic multiplicative decrease with an adaptive decrease paradigm.

Further White Paper Details
Publisher	Politecnico di Bari	File Format	PDF
Date Published	April 2006
Format	White Papers
Topics	Bandwidth Issues, TCP - IP

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