On the fairness of transport protocols in a multi-path environment

Becke, Martin; Dreibholz, Thomas; Adhari, Hakim; Rathgeb, Erwin P.

doi:10.1109/icc.2012.6363695

Cited by 57 publications

(32 citation statements)

References 13 publications

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“…Our evaluations [7], [9], [12] have clearly shown that all of these mechanisms, which have typically just been adopted from the singlepath protocols, have an impact on the performance of the multipath extensions. The common underlying problem to be solved is the lack of information about the status of the communication paths within the Internet -which becomes more crucial if the different paths are highly heterogeneous.…”

Section: Basicsmentioning

confidence: 99%

“…Finding a suitable Congestion Control (CC) mechanism able to handle multiple paths is non-trivial [9]. Simply adopting the mechanisms used for the singlepath protocols in a straight-forward manner does neither guarantee an appropriate throughput [9] nor achieve a fair resource allocation when dealing with multipath transfer [12].…”

Section: A Congestion Controlmentioning

confidence: 99%

“…Although the standardization process is, especially for MPTCP, fairly advanced, the behaviour of these protocols is not yet fully understood. Some simulative performance evaluations have already been published [6], first measurements have also been reported [7], [9], [12]- [15]. All these evaluations mainly focus on congestion control issues and use very simple network topologies while evaluations in real world Internet scenarios are still missing.…”

mentioning

confidence: 99%

“…The current effort to standardize CMT-SCTP [11] is based on ideas first published in [6] and recently improved and extended significantly [7], [9], [12]. Although the standardization process is, especially for MPTCP, fairly advanced, the behaviour of these protocols is not yet fully understood.…”

mentioning

confidence: 99%

“…In this case, the multipath protocol would occupy more than the fair share of bandwidth on the bottleneck link if every path of the multipath connection would behave like an individual (TCP-)connection. Therefore, the idea of Resource Pooling [8] has been adopted for both MPTCP and CMT-SCTP [6] to provide TCP-friendliness [9] under all circumstances which is a basic prerequisite for standardization by the IETF and ubiquitous deployment in the Internet.…”

mentioning

confidence: 99%

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Comparison of Multipath TCP and CMT-SCTP based on intercontinental measurements

Becke

Adhari

Rathgeb

et al. 2013

2013 IEEE Global Communications Conference (GLOBECOM)

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Abstract-The market penetration of access devices with multiple network interfaces has increased dramatically over the last few years. As a consequence, there is a strong interest to use all of the available interfaces concurrently to improve data throughput. Corresponding extensions of established Transport protocols are receiving considerable attention within research and standardization.Currently two approaches are in the focus of the IETF: The Multipath TCP (MPTCP) extension for TCP and the Concurrent Multipath Transfer extension for SCTP (CMT-SCTP). This paper evaluates and compares implementations of these two loadsharing protocols by using both lab measurements and intercontinental testbed realized via the Internet between Europe and China. The experiments show that some performance critical aspects have not been taken into account in previous studies. Furthermore, they show that the simple scenario with two disjoint paths, which is typically used for evaluation, does not sufficiently cover the real Internet environment. Based on these insights, we highlight that the different path management strategies of the two protocols have a significant impact on their performance in real Internet scenarios.

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Section: Basicsmentioning

confidence: 99%

Section: A Congestion Controlmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Comparison of Multipath TCP and CMT-SCTP based on intercontinental measurements

Becke

Adhari

Rathgeb

et al. 2013

2013 IEEE Global Communications Conference (GLOBECOM)

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A Real-Time Video Streaming System over IPv6+MPTCP Technology

Luo

Zhou

Dreibholz

et al. 2019

Advances in Intelligent Systems and Computing

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QUIC Throughput and Fairness over Dual Connectivity

Hasselquist

Lindström

Korzhitskii

et al. 2021

Modelling, Analysis, and Simulation of Computer and Telecommunication Systems

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Dual Connectivity (DC) is an important lower-layer feature accelerating the transition from 4G to 5G that also is expected to play an important role in standalone 5G. However, even though the packet reordering introduced by DC can significantly impact the performance of upper-layer protocols, no prior work has studied the impact of DC on QUIC. In this paper, we present the first such performance study. Using a series of throughput and fairness experiments, we show how QUIC is affected by different DC parameters, network conditions, and whether the DC implementation aims to improve throughput or reliability. Results for two QUIC implementations (aioquic, ngtcp2) and two congestion control algorithms (NewReno, CUBIC) are presented under both static and highly time-varying network conditions. Our findings provide insights into the impacts of splitting QUIC traffic in a DC environment. With reasonably selected DC parameters and increased UDP receive buffers, QUIC over DC performs similarly to TCP over DC and achieves optimal fairness under symmetric link conditions when DC is not used for packet duplication. The insights can help network operators provide modern users better end-to-end service when deploying DC.

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On the fairness of transport protocols in a multi-path environment

Cited by 57 publications

References 13 publications

Comparison of Multipath TCP and CMT-SCTP based on intercontinental measurements

Comparison of Multipath TCP and CMT-SCTP based on intercontinental measurements

A Real-Time Video Streaming System over IPv6+MPTCP Technology

QUIC Throughput and Fairness over Dual Connectivity

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