Throughput-based fair bandwidth allocation in OBS networks

Lê, Văn An; Vo, Viet Minh Nhat; Le, Manh Thanh

doi:10.4218/etrij.2017-0253

Cited by 4 publications

(8 citation statements)

References 7 publications

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“…In solving this problem, Le et al (2018) proposed a throughputbased fair bandwidth allocation (TFBA) schema, wherein the control of throughput fairness was based on two parameters: the actual bandwidth, ATi, and the allocated bandwidth according to the maxmin fairness, ABi , of connection i. When a contention occurs, TFBA first considers whether the incoming burst is in the bad or good flow: if ATi > ABi, the incoming burst is in the bad flow and it is dropped to reserve resources for the burst in the good flow.…”

Section: Distance Fairnessmentioning

confidence: 99%

A Combined Delay-Throughput Fairness Model for Optical Burst Switched Networks

Lê

2023

Journal of Information and Communication Technology

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Fairness is an important feature of communication networks. It is the distribution, allocation, and provision of approximately equal orequal performance parameters, such as throughput, bandwidth, loss rate, and delay. In an optical burst switched (OBS) network, fairness is considered in three aspects: distance, throughput, and delay. Studies on these three types of fairness have been conducted; however, they have usually been considered in isolation. These fairness types should be considered together to improve the communication performance of the entire OBS network. This paper proposes a combined delay-throughput fairness model, where burst assembly and bandwidth allocation are improved to achieve both delay fairness and throughput fairness at ingress OBS nodes. The delay fairness and throughput fairness indices are recommended as metrics for adjusting the assembly queue length and allocated bandwidth for priority flows. The simulation results showed that delay and throughput fairness could be achieved simultaneously, improving the overall communication performance of the entire OBS network.

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Section: Distance Fairnessmentioning

confidence: 99%

A Combined Delay-Throughput Fairness Model for Optical Burst Switched Networks

Lê

2023

Journal of Information and Communication Technology

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“…Comparing the number of used padding bytes if the completed burst is less than the threshold B min ; and 3. Comparing the throughput fairness between priority classes, which is measured by the throughput fairness index ( T F I ) as Equation ( 5) [20].…”

Section: Simulation and Analysismentioning

confidence: 99%

“…In OBS networks, the metrics such as burst/byte loss, bandwidth utilization and throughput are often used to evaluate network performance. In addition, for the differentiated priority flows that share the same link, it is necessary to ensure the throughput fairness between them [20]. A suggestion of the throughput fairness index (Equation 5) has been proposed in [20] and this paper continues to use this formula.…”

Section: Comparison Of the Throughput Fairnessmentioning

confidence: 99%

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A model of service differentiation burst assembling and padding for improving transmission eﬀiciency in OBS networks

Lê¹,

Nguyen²,

Chương³

et al. 2021

Turk J Elec Eng & Comp Sci

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Service differentiation is an indispensable requirement for transmission in optical burst switching (OBS) networks, which can be based on offset-time, burst-length, or both, offset-time and burst-length. The offset time based approach sets a large offset time for high priority bursts and a small offset time for low priority bursts. Whereas, with burst length based approach, high priority bursts are short in size and low priority bursts are long in length. A combination of these two approaches promises to provide flexible service differentiation. The paper proposes a model of service differentiation burst assembling and padding, in which the assembly time threshold is set to reduce the end-to-end delay, but does not effect the burst length prediction accuracy; the length of generated bursts are flexibly adjusted based on feedbacked void size; and the high-priority burst with short length is padded by the lower priority data. Simulation results and analysis show that the proposed model is more efficient than previous similar models in terms of bandwidth utilization, byte loss, throughput fairness and estimation error.

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“…At the core nodes the OBS network, a burst is forwarded towards the target node as configured. When the burst data arrives at the egress node after offset time, the burst will be processed in the optical domain entirely, and IP streams will be restored (burst disassembly) from this optical burst and send the packets to the upper network layers [1][2] [3].…”

Section: Introductionmentioning

confidence: 99%

A Retrial Queueing model with FDL at OBS core node

Thanh¹,

Pham²,

Van³

2019

NPA

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Optical Burst Switching networks are considered as an important candidate for the future transport networks. Many analysis models of OBS node with FDLs have been proposed recently. In this paper, we propose a novel retrial queueing model at OBS core node architecture SPL - feed-forward. Blocking probability will be calculated based on Markov multi-dimensional models. Numerical solution values from the proposed analysis method are compared with simulation, as well as between these models.

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Throughput-based fair bandwidth allocation in OBS networks

Cited by 4 publications

References 7 publications

A Combined Delay-Throughput Fairness Model for Optical Burst Switched Networks

A Combined Delay-Throughput Fairness Model for Optical Burst Switched Networks

A model of service differentiation burst assembling and padding for improving transmission eﬀiciency in OBS networks

A Retrial Queueing model with FDL at OBS core node

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