NXG03-5: Head-of-line Blocking in TCP and SCTP: Analysis and Measurements

Scharf, Michael P.; Kiesel, Sebastian

doi:10.1109/glocom.2006.333

Cited by 63 publications

(37 citation statements)

References 7 publications

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“…As Multipath TCP ensures in-order delivery, the packets that are scheduled on the low-delay subflow have to "wait" for the high-delay subflow's packets to arrive in the out-of-order queue of the receiver. This phenomenon is known as head-of-line blocking [19].…”

Section: Head-of-line Blockingmentioning

confidence: 99%

Experimental evaluation of multipath TCP schedulers

Paasch

Ferlin

Alay

et al. 2014

Proceedings of the 2014 ACM SIGCOMM Workshop on Capacity Sharing Workshop

254

128

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Today many end hosts are equipped with multiple interfaces. These interfaces can be utilized simultaneously by multipath protocols to pool resources of the links in an efficient way while also providing resilience to eventual link failures. However how to schedule the data segments over multiple links is a challenging problem, and highly influences the performance of multipath protocols.In this paper, we focus on different schedulers for Multipath TCP. We first design and implement a generic modular scheduler framework that enables testing of different schedulers for Multipath TCP. We then use this framework to do an in-depth analysis of different schedulers by running emulated and real-world experiments on a testbed. We consider bulk data transfer as well as application limited traffic and identify metrics to quantify the scheduler's performance. Our results shed light on how scheduling decisions can help to improve multipath transfer.

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Section: Head-of-line Blockingmentioning

confidence: 99%

Experimental evaluation of multipath TCP schedulers

Paasch

Ferlin

Alay

et al. 2014

Proceedings of the 2014 ACM SIGCOMM Workshop on Capacity Sharing Workshop

254

128

View full text Add to dashboard Cite

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“…[46] contains a simple analytical SCTP delay analysis for two SCTP streams, but only for the case of asymmetric links. An analytical model for an arbitrary number of SCTP streams has been published first in [1] and generalized in [33]. In the following, we present a further extension of this analysis.…”

Section: Related Workmentioning

confidence: 98%

“…This is why we do not further detail this approach here. An analysis of the usage of multiple parallel TCP connections can be found in [33].…”

Section: Delay Over Tcpmentioning

confidence: 99%

“…Second, management of buffers, which are required for the reassembly of SIMCO messages that were received in parts, is more complex for parallel TCP connections. And third, each TCP connection has to recover from packet loss independently, whereas SCTP applies error recovery and congestion control mechanisms to the aggregated message flow, which is more efficient [32,33].…”

Section: Multiple Tcp Connectionsmentioning

confidence: 99%

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Modeling and performance evaluation of transport protocols for firewall control

Kiesel

Scharf

2007

Computer Networks

Self Cite

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Firewalls are a crucial building block for securing IP networks. The usage of out-ofband signaling protocols such as SIP for IP telephony and multimedia applications requires a dynamic control of these firewalls and imposes several challenges. Recently, several firewall control architectures and protocols have been developed. The main focus of this paper is the Simple Middlebox Configuration Protocol (SIMCO), which is a new transactionbased firewall control protocol. Due to the impact on call setup delays, firewall signaling requires small end-to-end delays and thus mandates a careful choice of the transport protocol. Therefore, this paper studies SCTP, TCP and UDP-based transport for SIMCO and compares different configurations that allow to optimize the performance. We present an analytical model to quantify the impact of head-of-line blocking in SCTP and TCP and verify it with measurements. Both the model and measurements reveal that SCTP can significantly reduce the SIMCO response times by leveraging transmission over multiple parallel streams. While already a few SCTP streams can almost completely avoid headof-line blocking, our results show that TCP-and UDP-based transport may suffer from significantly larger delays.

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“…TCP -the classical Internet transport protocol -was designed to provide an ordered fully reliable transport service [78]. Many multimedia streams are tolerant with data loss but have strict latency requirements.…”

Section: Partial Reliability Sctp (Pr-sctp)mentioning

confidence: 99%

Consumer-Oriented Incoming Call Connection Service for a Ubiquitous Consumer Wireless World

Ганчев

O’Dróma

Wang

2008

Wireless Pers Commun

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This thesis proposes a novel consumer-oriented Incoming Call Connection (ICC) service as an important enabling infrastructural component of the recently proposed ubiquitous consumer wireless world (UCWW), a new Consumer-centric Business Model (CBM) environment for wireless communications. The ICC solution proposed here will be offered by third-party providers who are autonomous of the access network providers. Compared to the present ICC service in the legacy subscriber-based networks, the consumeroriented ICC service will offer to mobile users greater flexibility and management control over incoming calls, enable users to receive incoming calls via multiple access networks/providers by means of a single identity, support user-driven, seamless, network-transparent Hot Access network Change (HAC), largely eliminate roaming charges and develop a new wireless networking business opportunity among other ben- Furthermore, the thesis elaborates a generic CBM-ICC service scenario, which shows how the CBM-ICC service offers to mobile users greater freedom and operation control over incoming calls, enables the novel attribute of users being empowered to receive incoming calls simultaneously, and otherwise, from various homogeneous and heterogeneous access networks, owned by the same or different providers, and enables user-driven HAC on active calls in keeping with, or matched to, user's Always Best Connected and Best Served (ABC&S) policies. A CBM-ICC proof-of-concept system-level testbed is implemented to perform experimental tests, probe different communications scenarios, evaluate the service performance, and further elaborate the service architecture. In this, approaches towards evaluating the performance of the CBM-ICC service based on designed testbed are elaborated, and sample numerical results are presented and analyzed. DeclarationThis thesis is presented in fulfillment of the requirements for the degree of Doctorate of Philosophy. This thesis has not been submitted to any other University or higher education institution, or for any other academic award in this University. Where use has been made of the work of other people it has been fully acknowledged and fully referenced. Signed:Date:Ohana means family.Family means nobody gets left behind, or forgotten.Dedicated to Mum, Dad and my wife.Without your love and support I would not be at this point today.Dedicated to the loving memory of my grandma.

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NXG03-5: Head-of-line Blocking in TCP and SCTP: Analysis and Measurements

Cited by 63 publications

References 7 publications

Experimental evaluation of multipath TCP schedulers

Experimental evaluation of multipath TCP schedulers

Modeling and performance evaluation of transport protocols for firewall control

Consumer-Oriented Incoming Call Connection Service for a Ubiquitous Consumer Wireless World

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