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Network Function Virtualization (NFV) enables flexible implementation and provisioning of network functions as virtual machines running on commodity servers. Due to the availability of multiple hosting servers, such network functions (also called Virtual Network Functions (VNFs)) can be placed where they are actually needed, dynamically migrated, duplicated, or deleted according to the current network...
Virtual Content Delivery Network (vCDN) orchestration is necessary to optimize the use of resources and improve the performance of the overall SDN/NFV-based CDN function in terms of network operator cost reduction and high streaming quality. It requires intelligent and enticed joint SDN/NFV orchestration algorithm due to the evident huge amount of traffic to be delivered to end customers of the network...
Active learning has demonstrated value in STEM education and various meta analyses show improvements in student performance when making use of active learning pedagogy and active learning classrooms. One limiting factor to extending the reach of active learning is cost. Many models for state-of-the-art active learning environments make use of tools and infrastructure through which students can connect...
Information and Communication Technology is always walking in the forefront of human education. Now, it is the stage where human education has to adapt itself to the developing technologies. In 2016, the Natural Science Foundation suggested that people need to use the human-technology to improve and extend the human learning. This paper provides the concept of Software Defined Class (SDC), where the...
Video on Demand (VoD) streaming makes up an increasing portion of global IP traffic. Traditionally, data is served by content providers directly, putting a huge network load on the servers. We propose using our WebRTC-based protocols WebPeer and CodedWebPeer to create a P2P-assisted VoD streaming system with network coding. We introduce two metrics: network health to measure overall data saturation...
Software-Defined Networking (SDN) is a new paradigm that is attracting significant attention from both academy and industry. In recent years, increasing research efforts have addressed the conception of programming interfaces—northbound APIs—which allow business-applications to properly communicate with SDN controllers and program the network. However, most of current SDN controllers still offer low-level...
Prevailing network technologies separate control and data planes embedded within networking devices. Problems with this are expensive maintenance of closed-technology network devices and the inability to enforce coherent network-wide policies. Software Defined Networks (SDN) solves these problems with logical centralization based on open standards that use existing networking equipment. Quality of...
The Ocean Observatories Initiative's (OOI) Cabled Array (CA) is delivering high-definition video data since August 2015 via fiber optic cable from a statically positioned SubC 1Cam HD (CAMHD) video camera, deployed at the Mushroom hydrothermal vent in the Axial Seamount Hydrothermal Expeditions (ASHES) Field off the coast of Oregon (lat 45° 56.0186′N, long 130° 00.8185′W, depth 1,542 m). Over 20 TB...
The increasing diversity of end-devices used by users to access their applications and systems strengthens the need for device-independent methods for implementing these applications. The Device-Independent Architecture (DIA) is one of the available approaches to this problem, but it does not directly address the issue of user interface (UI) device-independency. This issue can be addressed by real-time...
The present paper is directed to a method of adaptively deploying a cache deployed at a subscriber network, capable of dynamically transforming a multi-level cache structure and a co-caching structure, in which a service is achieved by a plurality of caches in cooperation with each other, depending on the current network circumstance and the frequency of use of pieces of content.
Asthma is one of respiratory diseases that its symptom does not appear permanently. There are various situations that can be a stimuli for asthma symptoms. Thus, it is difficult to protect patients from an uncontrollable environment. Since most people in Thailand own smartphone either for their personal usage, such as note, calculator, calendar, or communicate with others via applications. Thus, this...
The article describes an online laboratory for a wide range of automated control systems researches with video stream in real time. The online laboratory, based on a DC motor, is an open source, suitable for modern mobile devices and it also does not require additional client software.
High quality online video streaming, both live and on-demand, has become an essential part of consumers' every-day lives. The popularity of video streaming has placed a heavy burden on the network infrastructure that now has to transfer an enormous amount of data very quickly to the end-user. To further exacerbate the situation, the Video-on-Demand (VoD) distribution paradigm uses a unicast independent...
Hardware accelerators are widely employed to alleviate CPU's burden in video applications. Playing high definition videos encoded in popular standards such as H.264, MPEG4 and VC-1 has already gain significant speedups on Intel, AMD and NVIDIA platforms. In this paper, we realized fluent playback of 720p AVS video on the Godson Platform. We made that possible by expanding the VA-API (Video Acceleration...
Recently, peer-to-peer has been becoming a promising architecture for developing video streaming services because it can reduce the bottlenecks and the load at the server side. However, P2P systems implement their own routing protocols on overlay networks, which are largely independent of the Internet routing. As a result, the traffic generated by P2P systems is immense and unpredictable. Controlling...
Current hypervisor software drops packets in the virtual network. This behavior is suboptimal, wastes network resources and harms performance. We propose to extend the flow control mechanisms that currently exist only in physical networks to the virtual networks. Using a simple setup we show the advantages of losslessness in a virtualized environment.
Due to the increasing amount of mobile devices such as smartphones and pads, the bandwidth requirements in the mobile networks are increasing exponentially. To reduce the traffic load between the smartphone and the application server on the cloud, we propose a context-aware mechanism where the smartphones and the network nodes report their contexts to the application server. The application server...
With the rapid development of network bandwidth, video resource use is everywhere, especially in teaching. Video question answering system in campus network realizes the framework and main functions based on the flash platform technology and provides a good platform for the students' autonomous learning. This paper mainly discusses the realization of the video function, in the question answering system,...
e-lab is a remote laboratory infrastructure, powered by a specific software framework, that allows to perform experiments and retrieve data from a remote apparatus. The deployment of new experiments on this platform is a complex and demanding process and an integrated overview for it is missing. An overview of e-lab's specifications is presented taking into account software development requirements...
P2P-Video-on-Demand (P2P-VoD) is a popular Internet service which aims to provide a scalable and high-quality service to users. At the same time, content providers of P2P-VoD services also need to make sure that the service is operated with a manageable operating cost. Given the volume-based charging model by ISPs, P2P-VoD content providers would like to reduce peers' access to the content server...
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