Adaptive Packet Scheduling for the Support of QoS over DVB-S2 Satellite Systems

Rendon-Morales, Elizabeth; Mata‐Díaz, Jorge; Alins, Juanjo; Muñoz, José L.; Esparza, Óscar

doi:10.1007/978-3-642-21560-5_2

Cited by 11 publications

(7 citation statements)

References 6 publications

(8 reference statements)

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“…A lesser effective delay is obtained by a class through granting it with a higher weighting than the traffic level it is transmitting. [19] developed an adaptive algorithm that optimizes the bandwidth utilization by managing the weights of a WRR scheduler for various traffic classes. Class-Based Queuing (CBQ) [20] generally refers to any mechanism which is based on the class.…”

Section: Scheduling Techniquesmentioning

confidence: 99%

Optimal approach for building scheduling algorithm in satellite communication

Al-Saegh¹

2018

IJET

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Building scheduling algorithms in satellite communication links became a necessity according to the typical problems that satellite networks suffers from, such as congestions, jamming, mobility, atmospheric impairment, and achieving the quality of service (QoS) requirements. However, building efficient algorithms needs several considerations that should be taken into account. Such as satellite and earth station node(s), link parameters and specifications, along with the service requirements and limitations. This paper presents efficient approach for accumulating the effective considerations that the designer should employ as a framework for building proper and efficient scheduling algorithm. The proposed approach provides proper solutions to the satellite communications impairments and satisfies the quality of service requirements in satellite communication networks.

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Section: Scheduling Techniquesmentioning

confidence: 99%

Optimal approach for building scheduling algorithm in satellite communication

Al-Saegh¹

2018

IJET

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“…8. This cross-layer schema has been used in the past in many works to provide adaptive packet scheduling to support QoS [14] or with QoS and fairness [15][16] over satellite systems. The novelty in this work is the application of SDN-based cross-layer QoS and providing automatic weights configuration with accurate and suitable value to meet the service constraints.…”

Section: Cross-layer Operation Together With Satellite Mac Schedumentioning

confidence: 99%

Towards SDN/NFV-enabled satellite ground segment systems: Bandwidth on Demand use case

Ahmed

Ferrús

Fedrizzi

et al. 2017

2017 IEEE International Conference on Communications Workshops (ICC Workshops)

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-Key features of satellite communications such as wide-scale coverage, broadcast/multicast support and high availability, together with significant amounts of new satellite capacity coming online, anticipate new opportunities for satellite communications services as an integral part within upcoming 5G systems. To materialize these opportunities, satellite communications services have to be provisioned and operated in a more flexible, agile and cost-effective manner than done today. In this context, this paper describes the architecture of a satellite ground segment system that is built on the introduction of Software Defined Networking (SDN) and Network Function Virtualization (NFV) technologies and examines the use case for delivering a Satellite Bandwidth on Demand (BoD) solution.

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“…Figure 9(a1) shows the CUBIC TCP goodput level when RR is used. In particular, the WRR weights were selected as 7, 7, and 1 for the EF, AF, and BE traffic classes, respectively, according to the guidelines defined in [23]. Similarly, the AF queue occupancy, shown in Figure 9(c1), reaches its maximum level (90 packets) when a bandwidth reduction is experienced (see the interval between 200 and 600 s).…”

Section: Analysis Of Cubic Tcp Considering Bandwidth Fluctuationsmentioning

confidence: 99%

“…By considering this approach, the physical layer behavior is adapted, taking into account the effects of the satellite delay and the implementation of the ACM techniques. To simplify and use these results, we approximated the physical layer estimation by means of a sinusoidal wave to represent a rain event affecting the DVB-S2 forward satellite link [23]. In this way, the peak of the sinusoidal wave, representing high link bandwidth availability, will be set to 2.7 Mbps, whereas the valley, representing a heavy rain event, will decrease the total link capacity to 1.3 Mbps.…”

Section: Analysis Of Cubic Tcp Considering Bandwidth Fluctuationsmentioning

confidence: 99%

“…To address this problem, the implementation of a WRR algorithm in which queues of the higherpriority classes become much more visited than the BE queue. In particular, the WRR weights were selected as 7, 7, and 1 for the EF, AF, and BE traffic classes, respectively, according to the guidelines defined in [23]. Figure 9(a2,c2) shows the goodput and the queue occupancy results, respectively, when the WRR packet scheduler is considered.…”

Section: Analysis Of Cubic Tcp Considering Bandwidth Fluctuationsmentioning

confidence: 99%

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Performance evaluation of selected Transmission Control Protocol variants over a digital video broadcasting‐second generation broadband satellite multimedia system with QoS

Rendon-Morales

Mata‐Díaz

Alins

et al. 2012

Int J Communication

Self Cite

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This paper presents an analysis of several Transmission Control Protocol (TCP) variants working over a digital video broadcasting-second generation (DVB-S2) satellite link with the support of the Differentiated Services (DiffServ) architecture to provide quality of service (QoS). This analysis is carried out using the NS-2 simulator tool. Three TCP variants are considered: SACK TCP, Hybla TCP, and CUBIC TCP. These TCP variants are taken as a starting point because they have proven to be the most suitable variants to deal with long delays present in satellite links. The DVB-S2 link also introduces the challenge of dealing with variable bandwidth, whereas the DiffServ architecture introduces the challenge of dealing with different priorities. In this paper, we propose a DiffServ model that includes a modified queuing mechanism to enhance the goodput of the assured forwarding traffic class. This modified DiffServ model is simulated and tested, considering the interaction of the selected TCP variants. In addition, we present evaluation metrics, significant simulations results, and conclusions about the performance of these TCP variants evaluated over the proposed scenario. As a general conclusion, we show that CUBIC TCP is the TCP variant that shows the best performance in terms of goodput, latency, and friendliness.

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Adaptive Packet Scheduling for the Support of QoS over DVB-S2 Satellite Systems

Cited by 11 publications

References 6 publications

Optimal approach for building scheduling algorithm in satellite communication

Optimal approach for building scheduling algorithm in satellite communication

Towards SDN/NFV-enabled satellite ground segment systems: Bandwidth on Demand use case

Performance evaluation of selected Transmission Control Protocol variants over a digital video broadcasting‐second generation broadband satellite multimedia system with QoS

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