Enabling agile video transcoding over SDN/NFV-enabled networks

Koumaras, Harilaos; Sakkas, Christos; Kourtis, Michail-Alexandros; Xilouris, Christos; Koumaras, Vaios; Gardikis, Georgios

doi:10.1109/temu.2016.7551916

Cited by 9 publications

(8 citation statements)

References 5 publications

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“…F. Z. Yousaf et al proposed [21] a new network slicing aware orchestration framework with flexible network function control system while introducing a consistent QoS/QoE management framework. H. Koumaras et al have developed a testbed [22] which orchestrates SDN/NFVs while providing real-time transcoding and capability to monitor NFV load and QoE levels. Although these works [2,21,22] provide a good understanding on orchestration for QoE management frameworks, they still lack the impact of cloud CDN cost analysis which is one of the distinctive reasons of choosing a particular CDN supplier.…”

Section: Related Work On Qoe For Online Videomentioning

confidence: 99%

“…H. Koumaras et al have developed a testbed [22] which orchestrates SDN/NFVs while providing real-time transcoding and capability to monitor NFV load and QoE levels. Although these works [2,21,22] provide a good understanding on orchestration for QoE management frameworks, they still lack the impact of cloud CDN cost analysis which is one of the distinctive reasons of choosing a particular CDN supplier. G. Faraci et al has provided a system model for 5G Operator Network Telco [23] which provides the interactions between core & edge cloud and NFVs running on physical nodes.…”

Section: Related Work On Qoe For Online Videomentioning

confidence: 99%

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On the modelling of CDNaaS deployment

Bulkan

Dagiuklas

Iqbal

2018

Multimed Tools Appl

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With the increasing demand for over the top media content, understanding user perception and Quality of Experience (QoE) estimation have become a major business necessity for service providers. Online video broadcasting is a multifaceted procedure and calculation of performance for the components that build up a streaming platform requires an overall understanding of the Content Delivery Network as a service (CDNaaS) concept. Therefore, to evaluate delivery quality and predicting user perception while considering NFV (Network Function Virtualization) and limited cloud resources, a relationship between these concepts is required. In this paper, a generalized mathematical model to calculate the success rate of different tiers of online video delivery system is presented. Furthermore, an algorithm that indicates the correct moment to switch between CDNs is provided to improve throughput efficiency while maintaining QoE and keeping the cloud hosting costs as lowest possible.

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Section: Related Work On Qoe For Online Videomentioning

confidence: 99%

Section: Related Work On Qoe For Online Videomentioning

confidence: 99%

On the modelling of CDNaaS deployment

Bulkan

Dagiuklas

Iqbal

2018

Multimed Tools Appl

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“…By leveraging the NFV and SDN in order to solve the challenges of resource, traffic and mobility management in the current mobile networks such as 4G/LTE networks, new concepts and opportunities for the Software Defined Mobile Network (SDMN) architecture is analyzed theoretically and experimentally in [10] to meet the end user's traffic requirements. In [11], authors demonstrate an SDN/NFV enabled network domain approach towards providing an agile video transcoding process for maintaining the QoE level of a media service when network congestion occurs. This approach adopts the encoding characteristics provisioned video stream to implements a self-optimization and self-adaptation VNF of real-time video streams.…”

Section: Related Workmentioning

confidence: 99%

An SDN-approach for QoE management of multimedia services using resource allocation

Grigoriou

Barakabitze

Atzori

et al. 2017

2017 IEEE International Conference on Communications (ICC)

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Future networks will be accompanied by new heterogeneous requirements in terms of end-users Quality of Experience (QoE) due to the increasing number of application scenarios being deployed. Network softwarization technologies such as Software Defined Networks (SDNs) and Network Function Virtualization (NFV) promise to provide these capabilities. In this paper, a novel QoE-driven resource allocation mechanism is proposed to dynamically assign tasks to virtual network nodes in order to achieve an optimized end-to-end quality. The aim is to find the best combination of network node functions that can provide an optimized level of QoE to the end users though node cooperation. The service in question is divided in tasks and the neighbor nodes negotiate the assignment of these considering the final quality. In the paper we specifically focus on the video streaming service. We also show that the agility provided by SDN/NFV is a key factor for enhancing video quality, resource allocation and QoE management in future networks. Preliminary results based on the Mininet network emulator and the OpenDaylight controller have shown that our approach can significantly improve the quality of a transmitted video by selecting the best path with normalized QoS values.

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“…Then both the control and data plane of a network function are virtualized to deliver various network services such as firewalls and load balancers. Furthermore, services beyond the OSI application layer (such as video processing services) are suggested as a complement of NFV especially in data center environment [7]. The NFV inherent many features and advantages from the SDN.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Network Stream Processing on Virtualized FPGA Resources

Chen

Mishra

Nunez-Yanez

et al. 2018

International Journal of Reconfigurable Computing

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The software defined network and network function virtualization are proposed to address the network ossification issue in current Internet infrastructure. Network functions and services are implemented as software applications to increase the programmability of network. However, involving general purpose processors in data plane restricts the bandwidth of network services. Therefore, to keep both the bandwidth and flexibility, a FPGA platform is suggested as a reconfigurable platform to deliver high bandwidth virtual network functions on data plane. In this paper, the FPGA resource has been virtualized by interconnecting partial reconfigurable regions to deliver high bandwidth reconfigurable processing on network streams. With the help of partial reconfiguration technology, network functions on our platform can be configured without affecting other functions on the same FPGA device. The on-chip interconnect system is further evaluated by comparing with existing network-on-chip system. A reconfiguration process is also proposed and demonstrated that it can be performed on our platform. The process can happen in the real time of network services and it is able to keep the original function working during the download of partial bitstream.

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Enabling agile video transcoding over SDN/NFV-enabled networks

Cited by 9 publications

References 5 publications

On the modelling of CDNaaS deployment

On the modelling of CDNaaS deployment

An SDN-approach for QoE management of multimedia services using resource allocation

Reconfigurable Network Stream Processing on Virtualized FPGA Resources

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