On the Use of Concurrent Multipath Transfer over Asymmetric Paths

Dreibholz, Thomas; Becke, Martin; Rathgeb, Erwin P.; Tüxen, Michael

doi:10.1109/glocom.2010.5683579

Cited by 58 publications

(57 citation statements)

References 9 publications

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“…The RED queues discard packets systematically and the increasing asymmetry between both paths amplifies the problem resulting in a tremendous growth of the lists and the CPU resources required to manage them. This effect is more dramatic for CMT-SCTP as this protocol has to maintain a second list for Non-Revokable SACKs (NR-SACK [23]) in order to avoid buffer blocking effects [7]. However, this is not really relevant as agrumentation for a protocol for the Internet as both protocol implementations clearly fail to perform as expected for highly asymmetrical links.…”

Section: Simple Setup With Additional Delaymentioning

confidence: 94%

“…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%

“…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%

“…One major issue for multipath loadsharing in Transport protocols is the so called "shared bottleneck" problem [7] arising if several paths of a multipath connection share a common bottleneck link and compete against classical TCP traffic -which can neither be avoided nor detected reliably. 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.…”

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%

See 4 more Smart Citations

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: Simple Setup With Additional Delaymentioning

confidence: 94%

Section: Basicsmentioning

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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Paths selection‐based resequencing queue length in concurrent multipath transfer

Wang

Xie

Wang

et al. 2014

Int J Communication

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SummaryTraditionally, concurrent multipath transfer (CMT) is used to achieve aggregate bandwidth in next generation networks, which are expected to be heterogeneous, integrating access networks employing different technologies. Simultaneous data transfer over multiple destination addresses could increase throughput, but causes data reordering at the destination. A lot of studies assumed that the receiver buffer (RBUF) in CMT is unlimited, actually, it's not. However, limited RBUF indeed affects the whole performance and even causes RBUF blocking problem in the real situation. In this paper, we analyze the RBUF blocking problem brought by simultaneous data transfer with limited RBUF. Then, we propose a new analytical model of reliable delivery to predict the Stream Control Transmission Protocol throughput and the length expectation of the resequenceing queue in CMT. Based on the model mentioned earlier, the paths selection problem is formulated as a knapsack problem, which maximizes the overall throughput and limits the resequencing queue length expectation to the fixed RBUF size. Through the computer simulations, the proposed analytical model can predict the throughput of CMT accurately. It is proved that our proposed paths selection has achieved much better performance than the others in CMT.Copyright © 2014 John Wiley & Sons, Ltd.

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HMTP: Multipath transport protocol for multihoming wireless erasure networks

Hwang

Saha

Choi

et al. 2014

Trans Emerging Tel Tech

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This paper proposes a fountain‐code‐based multipath transport protocol, called heterogeneous multipath transport protocol (HMTP), and evaluates its performance. HMTP improves the throughput performance and path utilisation of multihoming wireless erasure networks. It solves the receive buffer blocking problem and eliminates the need for retransmissions and in‐order packet delivery, both of which severely degrade the performance of existing multipath transport protocols in multihoming networks. The encoding and decoding algorithms of HMTP are based on efficient and computationally inexpensive coding algorithms such as LT codes. To minimise the fountain encoding/decoding overhead, complexity and computational cost while ensuring the desired decoding performance, the appropriate values of the parameters of the LT codes are determined. We implement and extensively evaluate the performance of HMTP using both NS‐2 simulator and an 802.11 wireless local area network laboratory test bed. Our simulations and experimental results show that HMTP significantly outperforms the concurrent multipath transfer stream control transmission protocol, especially in multihoming 802.11 wireless local area networks. Copyright © 2014 John Wiley & Sons, Ltd.

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On the Use of Concurrent Multipath Transfer over Asymmetric Paths

Cited by 58 publications

References 9 publications

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

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

Paths selection‐based resequencing queue length in concurrent multipath transfer

HMTP: Multipath transport protocol for multihoming wireless erasure networks

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