A survey of QoE assurance in converged networks

Stankiewicz, Rafał; Jajszczyk, Andrzej

doi:10.1016/j.comnet.2011.02.004

Cited by 75 publications

(40 citation statements)

References 24 publications

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“…However, the mapping between QoS and QoE is still an ongoing research topic [136]- [139]. In fact, [140] has shown that latency and jitter do not negatively impact the user's ability to assimilate the information yet it significantly impacts the QoE and, thus, it is essential to provide QoS at an appropriate level to achieve a high QoE [141].…”

Section: Converged Satellite and Terrestrial Networkmentioning

confidence: 99%

QoS Provisioning in Converged Satellite and Terrestrial Networks: A Survey of the State-of-the-Art

Niephaus

Kretschmer

Ghinea

2016

IEEE Commun. Surv. Tutorials

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It has been widely acknowledged that future networks need to provide significantly more capacity than nowadays' ones in order to deal with the increasing traffic demands of the users. Particularly in regions where optical fiber are unlikely to be deployed due to economical constraints, this is a huge challenge. One option to address this issue is to complement existing narrow-band terrestrial networks with additional satellite connections. Satellites cover huge areas and recent developments have considerably increased the available capacity, while the cost are decreasing. However, geostationary satellite links have significantly different link characteristics than most terrestrial links, mainly due to the higher signal propagation time, which often renders them not suitable for delay intolerant traffic. This article surveys the current state-of-the-art of satellite and terrestrial network convergence. We mainly focus on scenarios in which satellite networks complement existing terrestrial infrastructures, i.e. parallel satellite and terrestrial links exist, in order to provide high bandwidth connections while ideally achieving a similar end user Quality-of-Experience as in high bandwidth terrestrial networks. Thus, we identify the technical challenges associated with the convergence of satellite and terrestrial networks and analyze the related work. Based on this, we identify four key functional building blocks, which are essential to distribute traffic optimally between the terrestrial and the satellite networks. These are the Traffic Requirement Identification function, the Link Characteristics Identification function as well as the Traffic Engineering function and the Execution function. Afterwards, we survey current network architectures with respect to these key functional building blocks and perform a gap analysis, which shows that all analyzed network architectures require adaptations to effectively support converged satellite and terrestrial networks. Hence, we conclude by formulating several open research questions with respect to satellite and terrestrial network convergence.

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Section: Converged Satellite and Terrestrial Networkmentioning

confidence: 99%

QoS Provisioning in Converged Satellite and Terrestrial Networks: A Survey of the State-of-the-Art

Niephaus

Kretschmer

Ghinea

2016

IEEE Commun. Surv. Tutorials

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“…Human perception is often influence by factors like ambient room conditions, emotional and mental state of the subjects, personal profile (age, gender, etc.) that can affect the results obtained [35,36].…”

Section: Itu-t Recommendation P911mentioning

confidence: 99%

A Survey of Standardized Approaches towards the Quality of Experience Evaluation for Video Services: An ITU Perspective

Pal

Triyason

2018

International Journal of Digital Multimedia Broadcasting

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Over the past few years there has been an exponential increase in the amount of multimedia data being streamed over the Internet. At the same time, we are also witnessing a change in the way quality of any particular service is interpreted, with more emphasis being given to the end-users. Thus, silently there has been a paradigm shift from the traditional Quality of Service approach (QoS) towards a Quality of Experience (QoE) model while evaluating the service quality. A lot of work that tries to evaluate the quality of audio, video, and multimedia services over the Internet has been done. At the same time, research is also going on trying to map the two different domains of quality metrics, i.e., the QoS and QoE domain. Apart from the work done by individual researchers, the International Telecommunications Union (ITU) has been quite active in this area of quality assessment. This is obvious from the large number of ITU standards that are available for different application types. The sheer variety of techniques being employed by ITU as well as other researchers sometimes tends to be too complex and diversified. Although there are survey papers that try to present the current state of the art methodologies for video quality evaluation, none has focused on the ITU perspective. In this work, we try to fill up this void by presenting up-to-date information on the different measurement methods that are currently being employed by ITU for a video streaming scenario. We highlight the outline of each method with sufficient detail and try to analyze the challenges being faced along with the direction of future research.

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“…The bottleneck can cause problems such as long flow entry installation delay or blocking of input packets. These problems are critical for the packets right after a handover or for the initial delay sensitive service packets because users will experience severe QoS degradation when these packets are blocked or delayed [3].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the packets of the high priority services are defined as high priority packets. For example, the command/control packets require a loss ratio of 0% for service management, and the video telephony packets are very sensitive to the initial delay for playback performance [3].…”

Section: Introductionmentioning

confidence: 99%

A QoS-Aware Differential Processing Control Scheme for OpenFlow-Based Mobile Networks

Kyung

Yim

Kim

et al. 2014

IEICE Trans. Inf. & Syst.

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SUMMARYThis paper proposes a QoS-aware differential processing control (QADPC) scheme for OpenFlow-based mobile networks. QADPC classifies the input packets to the control plane by considering end terminal mobility and service type. Then, different capacities are assigned to each classified packet for prioritized processing. By means of Markov chains, QADPC is evaluated in terms of blocking probability and waiting time in the control plane. Analytical results demonstrate that QADPC offers high priority packets both lower blocking probability and less waiting time. key words: OpenFlow, quality of service (QoS), mobile flow, SDN

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A survey of QoE assurance in converged networks

Cited by 75 publications

References 24 publications

QoS Provisioning in Converged Satellite and Terrestrial Networks: A Survey of the State-of-the-Art

QoS Provisioning in Converged Satellite and Terrestrial Networks: A Survey of the State-of-the-Art

A Survey of Standardized Approaches towards the Quality of Experience Evaluation for Video Services: An ITU Perspective

A QoS-Aware Differential Processing Control Scheme for OpenFlow-Based Mobile Networks

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