On the Use of TCP BBR in Cellular Networks

Atxutegi, Eneko; Liberal, Fidel; Haile, Habtegebreil; Grinnemo, Karl-Johan; Brunström, Anna; Arvidsson, Åke

doi:10.1109/mcom.2018.1700725

Cited by 44 publications

(13 citation statements)

References 7 publications

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“…After the release of the BBR algorithm by Google [2], many papers evaluating the performance of TCP BBR were presented [5], [6], [15]. Hock et al [5] identified the design problem of the BBR algorithm: multiple BBR flows can result in the creation of a persistent queue in the bottleneck.…”

Section: Related Workmentioning

confidence: 99%

“…They analyzed the flow-to-flow synchronization behavior of BBR. Atxutegi et al [15] compared the performance of BBR, NewReno, and CUBIC over emulation and real mobile networks. They concluded that BBR outperforms other algorithms in a mobile environment but does not always provide consistent results depending on the operator's network state or flow type.…”

Section: Related Workmentioning

confidence: 99%

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Delay-Aware BBR Congestion Control Algorithm for RTT Fairness Improvement

Kim

Cho

2020

IEEE Access

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In late 2016, Google proposed the Bottleneck Bandwidth and Round-trip propagation time (BBR) congestion control algorithm to achieve high bandwidth and low latency for Internet traffic. Unlike loss-based congestion control algorithms, BBR works without filling the bottleneck buffer. Consequently, BBR can reduce packet loss and minimize end-to-end packet delay, which has attracted the attention of many researchers in recent years. However, some studies have reported the creation of persistent queues that cause unintended problems, resulting in a serious fairness issue between TCP BBR flows with different round-trip times (RTTs). Although existing congestion control algorithms also exhibit fairness issue between different RTT flows, BBR has a more serious problem in that the imbalance is considerable even with small RTT difference between the two flows, and the long RTT flow uses most of the bandwidth. The preponderance of long RTT flows is a serious problem because a particular user may cause imbalance by maliciously increasing the delay. Therefore, we propose a Delay-Aware BBR (DA-BBR) congestion control algorithm to mitigate the RTT fairness issue between BBR flows. In a network emulation experiment using the Mininet, the DA-BBR increased the fairness index by 1.6 times that of the original BBR, and the retransmission was greatly reduced. DA-BBR flow with short RTT demonstrated fair throughput even in competition with DA-BBR flows where RTT is five times higher.INDEX TERMS BBR, congestion control, fairness, round-trip time, TCP.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Delay-Aware BBR Congestion Control Algorithm for RTT Fairness Improvement

Kim

Cho

2020

IEEE Access

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“…Doubts have also been raised about BBR's performance in cellular networks [147] and under mobility [148], [149], but work to adapt it to this kind of environment is currently ongoing. BBR has also been proposed for QUIC [150].…”

Section: Hybrid Mechanismsmentioning

confidence: 99%

A Survey on Recent Advances in Transport Layer Protocols

Polese

Chiariotti

Bonetto

et al. 2019

IEEE Commun. Surv. Tutorials

107

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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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“…Compared to Wi-Fi network, hosts in cellular network has a larger range of movement and the ability to move at higher velocity. Thus, the range and speed of host movement is often considered as two important factors in evaluating the performance of TCP (MPTCP) congestion control protocols [20,21,22,23,24]. Due to the complexity of conducting measurement studies over cellular networks, and gradual rolling out of 5G globally, we plan to design and conduct similar studies in the cellular network in the future.…”

Section: Related Work and Motivationmentioning

confidence: 99%

Extensive evaluation on the performance and behaviour of TCP congestion control protocols under varied network scenarios

et al. 2019

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In recent decades, many TCP Congestion Control (CC) protocols have been proposed to improve the performance and reliability of TCP in various network scenarios. However, CC protocols are usually closely coupled with network conditions such as latency and packet loss. Considering that networks with different properties are common, e.g., wired/wireless LAN and Long Fat Networks (LFNs), investigating both performance and behaviors of CC protocols under varied network scenarios becomes crucial for both network management and development. In this paper, we conduct a comprehensive measurement study on the goodput, RTT, retransmission, friendliness, fairness, convergence time and stability of most widely-used CC protocols over wired LAN/WAN and wireless LAN (both 2.4GHz and 5GHz Wi-Fi). We also conduct comparative studies with respect to transmission cost, congested reverse path and bottleneck queue size in network simulator.Based on our analysis, we reveal several interesting and original observations. We found that the goodput of BBR is at least 22.5% lower than other CC protocols in wireless LAN due to insufficient pacing rate, even though it can always fully utilize the bottleneck bandwidth with low RTT in wired networks. We also observed that the total on-wire data volume of BBR is higher

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On the Use of TCP BBR in Cellular Networks

Cited by 44 publications

References 7 publications

Delay-Aware BBR Congestion Control Algorithm for RTT Fairness Improvement

Delay-Aware BBR Congestion Control Algorithm for RTT Fairness Improvement

A Survey on Recent Advances in Transport Layer Protocols

Extensive evaluation on the performance and behaviour of TCP congestion control protocols under varied network scenarios

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