Stochastic modeling of TCP in networks with abrupt delay variations

Authors:
Alhussein A. Abouzeid;Sumit Roy
Affiliations:
Department of Electrical, Computer and Systems Engineering, Rensselaer Polytechnic Institute, 110 8th St., Troy, NY;Department of Electrical Engineering, University of Washington, Box 352500, Seattle, WA
Venue:
Wireless Networks
Year:
2003

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Abstract

An analytical model of TCP (Transport Control Protocol) over an end-to-end path with random abrupt round-trip time (RTT) changes is presented. Modeling the RTT as a stochastic process, we analytically quantify and compare between the degree of degradation of the steady-state average throughput and window size due to spurious retransmissions for the different versions of TCP (Reno/New Reno versus Tahoe). The modeling methodology in this paper is used for evaluating different design alternatives for TCP for highly dynamic networks.