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Performance Analysis of TCP NewReno over a Cellular Last-Mile: Buffer and Channel Losses

Publication Type : Journal Article

Publisher : IEEE Transactions on Mobile Computing

Source : IEEE Transactions on Mobile Computing, Volume 14, Number 8, p.1629-1643 (2015)

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Keywords : Analytical models, basic controllable parameters, buffer loss, buffer size, cellular last-mile access, cellular radio, channel loss, complex interdependencies, cross-correlation, finite state Markov channel model, fixed-point analysis, frame-level Markovian loss model, Internet, IP networks, Markov processes, mathematical model, Mobile computing, Performance analysis, Propagation losses, relative time-scale, retransmission number, slowly varying channel, TCP NewReno, TCP NewReno congestion control algorithm, TCP throughput maximization, telecommunication congestion control, Throughput, transport protocols, wired-cum-wireless networks, wireless channel errors, wireless channels, wireless communication, Wireless networks

Campus : Bengaluru

School : School of Engineering

Department : Electronics and Communication

Year : 2015

Abstract : TCP NewReno is one of the most widely deployed TCP versions in today's Internet. However, a full understanding of the complex inter-dependencies between the losses due to wireless channel errors and those due to buffer overflows, and their (joint) impact on TCP NewReno's congestion control algorithm in wireless and wired-cum-wireless networks is still lacking. In this paper, we develop a comprehensive analytical model for, and study the performance of, TCP NewReno with a cellular last-mile access, taking into account both types of losses. We assume a frame-level Markovian loss model, and build a model that features the system's basic controllable parameters (such as the number of retransmissions and the buffer size), so as to study how they (jointly) affect the TCP-level throughput. We model certain finer aspects, e.g., correlations in wireless and buffer losses and their cross-correlation. We provide a summary of numerical results highlighting several non-trivial findings. In particular, we demonstrate that there exist optimal (i.e., TCP throughput maximizing) pairs of the number of retransmissions and the buffer size.

Cite this Research Publication : Manoj Kumar Panda, Hai Le Vu, Mandjes, M., and Pokhrel, S. Raj, “Performance Analysis of TCP NewReno over a Cellular Last-Mile: Buffer and Channel Losses”, IEEE Transactions on Mobile Computing, vol. 14, pp. 1629-1643, 2015.

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