Modeling the Stationary Behavior of TCP Reno Connections.
ABSTRACT In this paper, we outline a methodology that can be applied to model the behavior of TCP Reno flows. The proposed methodology
stems from a Markovian model of a single TCP source, and eventually considers the superposition and interaction of several
such sources using standard queueing analysis techniques. Our approach allows the evaluation of such performance indices as
throughput, queueing delay and segment loss of TCP flows. The results obtained through our model are validated by means of
simulation, under different traffic settings.
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ABSTRACT: In the first part of this paper, we present a simple extension of the well-known TCP steady-state throughput equation that can be used to calculate the throughput of several flows that share an end-to-end path. The value of this extension, which we show to work well with simulations as well as real-life measurements, is its practical applicability. Thus, in the second part of this paper, we present its application in MulTFRC, a TCP-friendly rate control (TFRC)-based congestion control mechanism that is fair to a number of parallel TCP flows while maintaining a smoother sending rate than multiple real TFRC flows do. MulTFRC enables its users to prioritize transfers by controlling the fairness among them in an almost arbitrary fashion.IEEE/ACM Transactions on Networking 01/2011; 19:1676-1689. · 2.01 Impact Factor
Conference Paper: An Analytic Model for the Stream Control Transmission Protocol.[Show abstract] [Hide abstract]
ABSTRACT: SCTP is a new transport layer protocol extending the functionality of TCP with support for performance enhancing services such as multihoming and multistreaming. Unfortunately, an accurate mathematical model, able to approximate performance results, still eludes the research community. Previous models either fail to provide practicality, or are too simplified in their assumptions. This paper aims to circumvent these problems by developing an analytic model containing a higher degree of information. The result is a more accurate model that approximates the steady-state throughput of an SCTP session.Proceedings of the Global Communications Conference, 2010. GLOBECOM 2010, 6-10 December 2010, Miami, Florida, USA; 01/2010
Conference Paper: Analytical Model of TCP NewReno through a CTMC.[Show abstract] [Hide abstract]
ABSTRACT: An analytical model of the Transmission Control Protocol (TCP) New Reno  performance through a Continuous-Time Markov Chain (CTMC) is presented and its theoretical predictions are corroborated by the well known network simulator ns-2 . An existing TCP Reno model  is modified in order to characterise the NewReno algorithm. The NewReno version is modelled given its proven better performance over channels presenting high loss rates and its extensive deployment in current web servers .Computer Performance Engineering, 6th European Performance Engineering Workshop, EPEW 2009, London, UK, July 9-10, 2009, Proceedings; 01/2009