wBBR: A Bottleneck Estimation-Based Congestion Control for Multipath TCP

Zhu, Ting; Qin, Xiaowei; Chen, Li; Chen, Xiaohui; Wei, Guo

doi:10.1109/vtcfall.2018.8690919

Cited by 13 publications

(15 citation statements)

References 9 publications

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“…Zhu et al proposed a coupled multipath BBR named wBBR [20]. They observed that their method achieved better performance compared with the other MPTCP CCAs; however, they mainly focused on satisfying the "congestion equality principle" [23] that did not correspond to the basic fundamental challenges of the MPTCP coupled CCAs, as proposed by IETF [6].…”

Section: Related Workmentioning

confidence: 99%

“…Inspired by the promising performance of BBR in singlepath TCP, several research groups developed different multipath BBR implementations [18][19][20][21]. However, in [18,19], an uncoupled approach focused mainly on Goal 1 (Improve throughput) was introduced, whereas in [20,21], a coupled method concentrating on Goal 2 (Fairness) was implemented. Moreover, the coupled algorithms introduced in [20][21][22] were mainly grounded on the MPTCP's existing coupled CCAs.…”

Section: Introductionmentioning

confidence: 99%

“…However, in [18,19], an uncoupled approach focused mainly on Goal 1 (Improve throughput) was introduced, whereas in [20,21], a coupled method concentrating on Goal 2 (Fairness) was implemented. Moreover, the coupled algorithms introduced in [20][21][22] were mainly grounded on the MPTCP's existing coupled CCAs. As a result, they partially inherited the disadvantages of the MPTCP CCAs.…”

Section: Introductionmentioning

confidence: 99%

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Coupled Multipath BBR (C-MPBBR): A Efficient Congestion Control Algorithm for Multipath TCP

et al. 2020

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Multipath transmission control protocol (MPTCP) is a promising transport layer protocol that enables a device to utilize multiple communication interfaces simultaneously, thereby achieving high throughput. A congestion control algorithm (CCA) employed in MPTCP constitutes a key part that controls the data flow through different subflows (SFs). There are two fundamental challenges associated with MPTCP CCAs. First, MPTCP flows should have an advantage over single-path flows; second, MPTCP flows should be fair, indicating that SFs sharing a common bottleneck should occupy a capacity fairly close to that required by a single-path flow. Several MPTCP CCAs have been developed; however, they have failed to satisfy these challenges in all scenarios. Recently, Google has introduced the bottleneck bandwidth and round-trip-time (BBR), a new CCA for single-path TCP, achieving high throughput with minimum delay by employing a network model. In the present paper, we propose a novel MPTCP CCA based on BBR named coupled multipath BBR (C-MPBBR) that satisfies the fundamental challenges by exploiting the concept of network modeling in BBR. C-MPBBR addresses the first challenge by closing the lowbandwidth SFs by tracking the delivery rate and bottleneck bandwidth (BtlBW). Then, it satisfies the second challenge through identifying those SFs that share a common bottleneck and dividing the BtlBW share corresponding to a SF among them. We implemented C-MPBBR in the Linux kernel, tested it on a wide range of scenarios by the Mininet emulation experiments, and the real-world Internet, and confirmed that the proposed C-MPBBR outperforms the existing MPTCP CCAs in terms of successfully satisfying the fundamental challenges by ensuring both throughput and fairness.

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Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Coupled Multipath BBR (C-MPBBR): A Efficient Congestion Control Algorithm for Multipath TCP

et al. 2020

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“…Recently, multipath congestion control has been revisited from two new perspectives: (1) adapting BBR to this context [26,27,61], and (2) applying reinforcement learning [19,42,60]. We leave the thorough comparison of our online learning approach and these approaches to future research.…”

Section: Related Workmentioning

confidence: 99%

“…Recent years have seen a surge of interest in novel approaches to high-performance congestion control [5,10,17,18,34], motivated by TCP's poor performance [17] and applications' ever-growing demands. Lately, researchers have also started investigating the applicability of these approaches to multipath congestion control [19,26,27,42,60,61].…”

mentioning

confidence: 99%

MPCC

Gilad

Rozen-Schiff

Godfrey

et al. 2020

Proceedings of the 16th International Conference on Emerging Networking EXperiments and Technologies

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Multipath transport, as embodied in MPTCP, is deployed to improve throughput and reliability in mobile and residential access networks, with additional use-cases including spreading load in data centers and WANs. However, MPTCP is fundamentally tied to TCP Reno's legacy AIMD algorithm, and significantly lags behind the performance of modern single-path designs. Consequently, MPTCP fails to achieve high performance in many real-world environments. We present MPCC, a high-performance multipath congestion control architecture. To achieve our combined goals of fairness and high performance in challenging environments, MPCC employs online convex optimization (a.k.a. online learning). In experiments with a kernel implementation on emulated and live networks, MPCC significantly outperforms MPTCP.

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