TCP Vegas-A: solving the fairness and rerouting issues of TCP Vegas

Srijith, K.N.; Jacob, Lillykutty; Ananda, A.L.

doi:10.1109/pccc.2003.1203713

Cited by 17 publications

(6 citation statements)

References 12 publications

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“…However, the first version of Vegas had severe issues with the Delayed ACK mechanism, which affected its RTT estimation, and with links with high latency [112]. These issues prompted the development of several improvements, like Vegas-A [128], which addresses rerouting and bandwidth sharing fairness, Vegas-V [129], which increases the aggressiveness of the original algorithm, while remaining fair to other flows, and Adaptive Vegas [130], where adaptive refers to the ability of the algorithm to change its parameters according to the statistics of throughput and RTT variation. Some specialized versions were developed for wireless [131] and mobile [132] ad hoc networks; three particular modifications became part of the so called New Vegas algorithm [133].…”

Section: B Delay-based Mechanismsmentioning

confidence: 99%

A Survey on Recent Advances in Transport Layer Protocols

Polese

Chiariotti

Bonetto

et al. 2019

IEEE Commun. Surv. Tutorials

121

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Over the years, the Internet has been enriched with new available communication technologies, for both fixed and mobile networks and devices, exhibiting an impressive growth in terms of performance, with steadily increasing available data rates. The Internet research community has kept trying to evolve the transport layer protocols to match the capabilities of modern networks, in order to fully reap the benefits of the new communication technologies. This paper surveys the main novelties related to transport protocols that have been recently proposed, identifying three main research trends: (i) the evolution of congestion control algorithms, to target optimal performance in challenging scenarios, possibly with the application of machine learning techniques; (ii) the proposal of brand new transport protocols, alternative to the Transmission Control Protocol (TCP) and implemented in the user-space; and (iii) the introduction of multipath capabilities at the transport layer.

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Section: B Delay-based Mechanismsmentioning

confidence: 99%

A Survey on Recent Advances in Transport Layer Protocols

Polese

Chiariotti

Bonetto

et al. 2019

IEEE Commun. Surv. Tutorials

121

View full text Add to dashboard Cite

show abstract

“…However, it still retains the other mechanism of Reno, and a packet loss can still be detected by retransmission timeout if the other mechanisms fail. Issues identified with TCP Vegas are problems of rerouting, persistent congestion, and discrepancy in flow rate tied with starting times and link bandwidth [9].…”

Section: Existing Variants Of Tcpmentioning

confidence: 99%

Discrete TCP: Differentiating Slow Start and Congestion Avoidance

Gambhava¹,

Bhensdadia²

2018

IJIES

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Deployment of wireless links (terrestrial and satellite) along with wired links has made extension of the Internet even in remote places feasible. TCP/IP protocol suite is an integral part of the Internet. Congestion control of TCP plays a vital role in the performance of the Internet. TCP's unconditional flow control in case of a packet loss has always been a concern for researchers. Further, halving congestion window in such conditions without taking in to account the current network state is also considered inappropriate. The problem is compounded in wireless networks where packet losses occur often due to channel errors rather than the shortfall in the available bandwidth. In this situation, TCP's conservative behaviour underutilises the bandwidth. We therefore, propose a scheme to address the issue of underutilization of network resources. The proposed approach, Discrete TCP (DTCP), differentiates slow start and congestion avoidance phases while tuning data flow over a transport connection. DTCP evaluates ssthresh and cwnd before setting up parameters, based on the existing network condition to enhance the performance. The proposed scheme is compared and analyzed with various existing schemes with the help of extensive simulations using ns2. Results of simulation based experiments indicate significant performance improvement of DTCP on erroneous links and in heterogeneous networks and confirm its suitability.

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“…To improve the performance of Vegas, Srijith et al . proposed a modified Vegas, which operates in two different modes depending on the count value.…”

Section: Related Workmentioning

confidence: 99%

“…To improve the performance of Vegas, Srijith et al [33] proposed a modified Vegas, which operates in two different modes depending on the count value. If the measured RTT continuously increases but the congestion window remains unchanged, the sender acts in a moderate mode and simply increases the count value by one.…”

Section: Related Studies On Bias Of Tcp Vegasmentioning

confidence: 99%

Congestion control with dynamic threshold adaptation and cross‐layer response for TCP Vegas over IEEE 802.11 wireless networks

Cheng

Deng

2013

Int J Communication

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SUMMARYWireless technologies provide mobile access and enable rapid andcost‐effective network deployment. But a wireless link is generally accompanied by high interference, transmission errors and a varying latency. The erratic packet losses usually lead to a curbing of the flow of segments on the TCP connection, and thus limit TCP performance. This paper presents a threshold control mechanism with cross‐layer response approach for improving TCP Vegas performance in IEEE 802.11 wireless networks. By making slight modifications to the legacy IEEE 802.11 MAC and TCP, the numerical results reveal that the proposed scheme provides a significant improvement in TCP performance under IEEE 802.11 wireless environments. Copyright © 2013 John Wiley & Sons, Ltd.

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TCP Vegas-A: solving the fairness and rerouting issues of TCP Vegas

Cited by 17 publications

References 12 publications

A Survey on Recent Advances in Transport Layer Protocols

A Survey on Recent Advances in Transport Layer Protocols

Discrete TCP: Differentiating Slow Start and Congestion Avoidance

Congestion control with dynamic threshold adaptation and cross‐layer response for TCP Vegas over IEEE 802.11 wireless networks

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