Although adaptive video streaming solutions have become very popular over the last years, only a limited number of studies so far have investigated Quality of Experience (QoE) in the context of such services from a real user perspective. In this paper, we present results from a user study (N=32) on adaptive video streaming QoE. Content (i.e., music video clips) was streamed on portable terminal...

Remote desktop connection (RDC) services offer clients the ability to access remote content and services, commonly in the context of accessing their working environment. With the advent of cloud-based services, an example use case is that of delivering virtual PCs to users in WAN environments. In this paper, we aim to detect and analyze common user behavior when accessing RDC services, and use ...

Video communication over IP (Internet Protocol) networks has grown significantly in recent years. However, the Quality of Experience (QoE) associated with video over IP can vary dramatically. This is mainly due to bandwidth restrictions and the fluctuating Quality of Service (QoS). Investigating the perceptual effects of packet loss could lead to a better understanding of the QoE experienced by...

WiMAX (acronym for Worldwide Interoperability for Microwave Access) is a family of technical standards based on IEEE 802.16 standard that defines the high speed connection through radio waves unlike DSL (Digital Subscriber Line) or other wired technology. It can provide coverage to remote rural areas of several kilometers in radius, it’s an adequate response to some rural or inaccessible areas....

Video streaming currently dominates global Internet traffic and will be of even increasing importance in the future. In this paper we assess the impact of the underlying transport protocol on the user perceived quality for video streaming using YouTube as example. In particular, we investigate whether UDP or TCP fits better for Video-on-Demand delivery from the end user’s perspective, when the ...

Initial video quality requirement is not well understood and content providers usually send video at the highest send bitrate resulting in over-provisioning. The main aim of this paper is to present a new scheme that can adapt video send bitrate according to the dynamics of the content and the user’s Quality of Experience (QoE) requirement at the pre-encoding stage.

Multimedia streams have increased dramatically over the wireless networks during the last few years. 3D video stream-based applications and movies will become significant contents of wireless network traffic in future Internet. This paper shows Quality of Experience (QoE) results based on transport network’s Quality of Service (QoS) level degradation obtained from subjective tests which were ca...

Progress in technology has led to a stunning increase in the quality of multimedia content over the past few decades: Ultra-HD or 3D displays have become affordable nowadays, and high-definition streaming is quickly replacing conventional media libraries at home as well as on mobile devices. At the same time, quality considerations have become a lot more intricate because of the additional comp...

Traditional Internet pricing focuses on the link between Quality-of-Service (QoS) provided by the network and corresponding charges paid by the user who thus reacts to the current network status. However, the key success factor for future packet-switched networks is not network-centric QoS, but rather the service quality as perceived by the user (Quality-of-User Experience, QoE). With respect t...