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In this paper, we evaluate QoS (Quality of Service) and QoE (Quality of Experience) characteristics of 2K and 4K video distribution using MPEG-DASH (Dynamic Adaptive Streaming over HTTP). Evaluation results conclude that smaller playout buffer size contributes to QoE improvement.
Vehicular Ad-hoc Networks (VANETs) has witnessed significant attention from academia and industries, due to the growing number of applications and devices focusing on safety and efficiency in transportation. Video Streaming in Vehicular Communication (VSVC) presents interactive real-time view of an emergency incidence on roads. On-board unit of vehicles are utilized for streaming real time video of...
The ever increasing demand for high bandwidth, low latency multimedia applications on mobile devices is set to pose a considerable challenge on the bandwidth allocation and multiplexing mechanisms in LTE and future wireless networks. One of the most important factors that diminish the quality of viewing experience of delivered videos is frequent client side rebuffering events. This paper proposes...
Vehicular ad hoc network (VANET) is an emerging network technology with the goal of providing public safety, traffic coordination and infotainment for the comfort of passengers in moving vehicles. However, it faces the challenge of not providing the expected quality of service (QoS) when streaming videos online. This challenge emanate from the variable topology infrastructure caused by intrinsic high...
Since the early days of Quality of Experience (QoE) research, relationships to Quality of Service (QoS) and corresponding QoE-QoS models have been of great interest to the research community. However, the manifold quality transformations throughout the communication stack, together with accessibility issues of QoS parameters inside networks, hamper availability, applicability and generality of such...
In recent years, the developments in wireless handheld devices and networking offers the technical platform for multimedia streaming over mobile ad-hoc networks (MANETs). However, providing QoS for multimedia streaming is quite difficult in MANETs due to its physical and organizational characteristics. Due to the high data rate and frame size of multimedia traffic there are times when offered load...
This decade has been marked with tremendous growth of video streaming which has been known as “bandwidth killer service”. Unmanaged services or Over-the-top (OTT) services now become more and more popular in the entertainment industry. However, it is easy to realize that those services' providers do not guarantee a stable video quality for users because they cannot control the underlying network condition...
In the current Internet video streaming is dominating fixed and mobile consumer traffic. However, wireless and mobile networks may lack bandwidth or suffer from severe bandwidth fluctuations. The question arises: What is the impact of bandwidth fluctuations on the Quality of Service (QoS) and the user perceived quality? The key contribution of this paper is the analysis of QoS in terms of application-level...
Internet service providers (ISP) are deploying software defined networking (SDN), which enables them to better utilize their resources and increase their revenues by offering on-demand differentiated services. In particular, SDN makes provisioning of dynamically managed video services with multiple levels of service viable, since the controller has complete vision of network resources and can change...
In this paper, we introduce a new video-streaming framework that is based on a novel packet design in conjunction with low-complexity active queue management within the network. Our proposed framework, which we call Erasable Packets within Internet Queues (EPIQ), exploits the inherent multi-priority nature of video to deliver optimal quality-of-experience to users, yet without requiring any additional...
Multimedia applications such as video streaming have posed challenges over the wireless networks. A selective mapping approach was proposed in this paper to address the quality of delay-sensitive video transmitted over 802.11e EDCA wireless LAN. This cross-layer design takes into account the importance of packets and end-to-end delay requirements. Packets of high importance will be assigned to virtual...
In this paper, we introduce a new Active Queue Management (AQM) paradigm and a corresponding congestion control mechanism for a novel video-streaming framework. We call the proposed framework Erasable Packets within Internet Queues (EPIQ). EPIQ exhibits best-effort complexity within the network, similar to the networking complexity of HTTP-based Adaptive Streaming (HAS); yet EPIQ can provide optimal...
We introduce a distributed, dynamic, end-to-end (E2E) service-level management framework over a multi-domain SDN in order to enable end users to negotiate with their service providers a level of service according to their needs and budget. In this framework, the service provider offers multiple levels of service and allocates network resources to each user to satisfy specific service level requests...
Nowadays mobile video streaming services become very popular. However, due to the drastic bandwidth fluctuation in a mobile network, the quality of the mobile video streaming degrades significantly. Above all, mobile users are not happy when video image freezes for a few seconds/minutes. Most of current video streaming services are working as an OTT (over the top) service, which means a mobile network...
In this study, we discuss the optimization of media quality parameters to reduce energy consumption for emergency communication services. The decrease of the running cost and the improvement of availability are very important for the reduction of the power consumption in emergency communication systems and services. We have conducted various experiments for power consumption by considering different...
Multimedia applications over wireless networks are growing day by day. To provide better user experience the use of overlay network is the promising solution. However, maintaining overlay in wireless network is the challenging task which produces additional overheads. This overhead degrades the quality of the video transmitted over overlay networks. To overcome these issues ECDD model is proposed...
Network technology is being developed as a next-generation network (NGN) which is a software-defined networking. The network management can be done directly from the control unit that separated from the transmission unit, called as a forwarder and decoupling controller, which makes efficient network management. In the near future, the next generation network will be used to replace a traditional network...
Nearly three-fourths of the world's mobile data traffic will be video in the next 5 years. Video is one of the most demanding services in terms of network efficiency, reliability, and quality. In this work, we present a comparative performance evaluation of three different video streaming protocols, namely MPEG-DASH, RTSP, and RTMP for both on-demand and live video streaming over 4G and Wi-Fi (under...
Mobile users today can choose among different competing network operators offers, influenced in their choice by perceived and experienced quality, during the fruition of the service. The network operators must be able to react on quality issues, before the user perceives them. In order to do this, it is essential to establish a link between Quality of Experience (QoE) and Quality of Service (QoS)...
This paper studies the resource allocation problem for efficiently utilizing network resources for distributing video over a peer to peer mobile ad hoc network. We define an NP complete linear optimization problem to handle the upload bandwidth available across each node. Scalable video coding is used to maximize the quality of experience among users and to distribute the load and reduce the consumed...
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