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Enhanced Multistream Fast TCP: Rapid Bandwidth Utilization after Fast-Recovery Phase

Department of Computer Science & Engineering, University of Engineering & Technology, Lahore 54890, Pakistan
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Appl. Sci. 2019, 9(21), 4698; https://doi.org/10.3390/app9214698
Received: 29 August 2019 / Revised: 26 October 2019 / Accepted: 29 October 2019 / Published: 4 November 2019
(This article belongs to the Section Electrical, Electronics and Communications Engineering)
The purpose of this study is to enhance the performance of Multistream Fast Transmission Control Protocol (TCP) keeping in view the recent web-based applications that are being deployed on long-range, high-speed, and high-bandwidth networks. To achieve the objective of the research study, a congestion control after fast-recovery module for congestion control scheme of Multistream Fast TCP is proposed. The module optimized the performance of the protocol by reducing the time that is required to consume the available bandwidth after a fast-recovery phase. The module is designed after studying additive-increase, multiplicative-decrease and rate-based congestion window management schemes of related transport protocols. The module adjusts the congestion window on receipt of each individual acknowledgment instead of each round trip time after the fast-recovery phase until it consumes vacant bandwidth of the network link. The module is implemented by using Network Simulator 2. Convergence time, throughput, fairness index, and goodput are the parameters used to assess the performance of proposed module. The results indicate that Enhanced Multistream Fast TCP with congestion control after fast recovery recovers its congestion window in a shorter time period as compared to multistream Fast TCP, Fast TCP, TCP New Reno, and Stream Control Transmission Protocol. Consequently, Enhanced Multistream Fast TCP consumes the available network bandwidth in lesser time and increases the throughput and goodput. The proposed module enhanced the performance of the transport layer protocol. Our findings demonstrate the performance impact in the form of a decrease in the convergence time to consume the available network bandwidth and the increase in the throughput and the goodput. View Full-Text
Keywords: delay-based congestion control; Fast TCP; fast recovery; loss-based congestion control delay-based congestion control; Fast TCP; fast recovery; loss-based congestion control
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Ahmad, S.; Arshad, M.J. Enhanced Multistream Fast TCP: Rapid Bandwidth Utilization after Fast-Recovery Phase. Appl. Sci. 2019, 9, 4698.

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