TCP Prairie: a sender-only TCP modification based on adaptive bandwidth estimation in wired-wireless networks

Parvez, Nadim; Hossain, Ekram

doi:10.1016/j.comcom.2004.08.001

Cited by 5 publications

(8 citation statements)

References 12 publications

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“…Thus, in case of TCP Westwood [5] and Prairie [10], they dynamically estimate available bandwidth, and adjust ssthresh and cwnd based on the estimattion. These schemes make it possible for ssthresh and cwnd to be large in proportion to the available bandwidth, and they have more significant impact on improving TCP's performance compared to the other previous works.…”

Section: Related Work and Motivationmentioning

confidence: 99%

“…The common problem of these schemes is that they did not pay much attention on appropriately adjusting the transmission rate, even though how to control the transmission rate is critical to improve TCP's performance [8], [9]. In case of TCP Westwood [5] and Prairie [10], they estimate the available bandwidth, and adjust TCP's transmission rate according to the estimated bandwidth. Although they have more significant impact on improving TCP's performance, these schemes have a high possibility to cause more frequent burst losses as the rate of wireless transmission errors increases.…”

Section: Introductionmentioning

confidence: 99%

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TCP's dynamic responding to packet losses in wired-wireless networks

Park

Chung

Ahn

et al. 2011

2011 IEEE 7th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)

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When TCP operates in wireless networks, its congestion control algorithms such as fast retransmit/recovery (FRR) and retransmission timeouts (RTO) are often triggered regardless of congestion. Such FRRs/RTOs non-related to congestion incur TCP's misbehavior such as blindly halving the transmission rate, unnecessarily retransmitting the outstanding packets which may be in the bottleneck queue. Although many previous works have been proposed to detect the FRRs/RTOs non-related to congestion, they paid little attention on effectively adjusting the transmission rate according to network conditions. In this paper, we propose a new scheme to dynamically respond to FRRs/RTOs by considering network conditions such as the available bandwidth and the loss rate. Our scheme adjusts the transmission rate in proportion to the available bandwidth in order to quickly and fully utilize the available bandwidth, and then readjusts it in inverse proportion to the loss rate in order to avoid burst losses and long go-back-N retransmissions. Throughout the extensive experiments, we show that our scheme significantly outperforms previous works while it maintains the fair and friendly behavior to other TCP connections.

show abstract

Section: Related Work and Motivationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

TCP's dynamic responding to packet losses in wired-wireless networks

Park

Chung

Ahn

et al. 2011

2011 IEEE 7th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)

View full text Add to dashboard Cite

show abstract

“…We evaluated the performance of our scheme under various topologies, and compared it with the previous studies such as F-RTO [14,15], JTCP [9], and Prairie [18]. F-RTO is one of previous schemes to detect spurious RTOs, JTCP is one of previous schemes to detect wireless FRRs/RTOs, and Prairie is one of previous schemes to respond FRRs/RTOs according to available bandwidth.…”

Section: Performance Evaluationmentioning

confidence: 99%

“…Throughout the extensive simulations, we (1) observe how often congestion irrelative FRRs/RTOs are triggered, (2) measure the performance enhancement of our scheme and compare it with previous studies such as F-RTO, JTCP, and Prairie [18], (3) evaluate our scheme's fairness and friendliness. The results show that our scheme significantly outperforms previous studies while it maintains the fair and friendly behavior to other TCP connections.…”

Section: Introductionmentioning

confidence: 99%

“…In case of TCP Westwood [8] and Prairie [18], they dynamically estimate the available bandwidth, and adjust the transmission rate by updating ssthresh and cwnd to the large values in proportion to the estimated available bandwidth. They have more significant impact on improving TCP's performance compared to the other previous studies.…”

Section: Related Study and Motivationmentioning

confidence: 99%

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TCP’s dynamic adjustment of transmission rate to packet losses in wirelessnetworks

Park

Chung

Ahn

2012

J Wireless Com Network

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Based on the assumption of transmission control protocol (TCP) that packets are lost due to congestion, TCP's congestion control algorithms such as fast retransmit/recovery (FRR) and retransmission timeouts (RTO) unconditionally reduce the transmission rate for every packet loss. When TCP operates in wireless networks, however, FRRs/RTOs are often triggered regardless of congestion due to sudden delay and wireless transmission errors. The congestion irrelative FRRs/RTOs incur TCP's misbehavior such as blindly halving the transmission rate, unnecessarily retransmitting the outstanding packets which may be in the bottleneck queue. Although many previous studies have been proposed to detect the congestion irrelative FRRs/RTOs, they paid little attention on effectively adjusting the transmission rate for the detected congestion irrelative FRRs/RTOs. In this article, we propose an enhanced TCP to dynamically adjust its transmission rate according to network conditions. Our scheme adjusts the transmission rate in proportion to the available bandwidth in order to quickly utilize the available bandwidth, and also re-adjusts it in inverse proportion to the loss rate in order to avoid burst losses and long go-back-N retransmissions. By doing so, our scheme has significant effects to avoid the performance degradation caused by the congestion irrelative FRRs/RTOs. Throughout the extensive experiments, we evaluate our scheme and compare it with previous works in terms of goodput, fairness, and friendless under various network topologies. The results show that our scheme significantly outperforms previous studies while it maintains the fair and friendly behavior to other TCP connections.

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Performance Analysis of a Novel TCP Protocol Algorithm Adapted to Wireless Networks

et al. 2020

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As telecommunication systems evolve towards new-generation architectures, likewise, new protocols are created in order to improve efficiency. One of these protocols is Transmission Control Protocol (TCP), which controls the transmission bit rate in function of network congestion. Nevertheless, in wireless communications, there appear problems such as noise and interference, for which TCP was not designed. Based on these problems, there exist some methods trying to mitigate congestion, such as explicit loss notifications and the use of end-to-end codification. The aim of this work was to propose a wireless TCP protocol improvement, considering a negative acknowledgment (NACK), which allows to differentiate between losses due to congestion and losses due to wireless channel issues. NACK employs a small protocol packet and produces improvement in the quality of service metrics. The experiments were carried out in in-door and out-door environments, over an online video game scenario, and over a long-distance wireless link between two islands. The average results show a 25-percent delay improvement and a 5-percent jitter improvement when compared to the original TCP Reno protocol, while for throughput a 90-percent improvement was achieved for distances between 100 and 414 m.

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TCP Prairie: a sender-only TCP modification based on adaptive bandwidth estimation in wired-wireless networks

Cited by 5 publications

References 12 publications

TCP's dynamic responding to packet losses in wired-wireless networks

TCP's dynamic responding to packet losses in wired-wireless networks

TCP’s dynamic adjustment of transmission rate to packet losses in wirelessnetworks

Performance Analysis of a Novel TCP Protocol Algorithm Adapted to Wireless Networks

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