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The complex construction of online educational systems lies within three key activities, i.e., design, execution, and appropriate post-implementation assessment. However, there is inadequate knowledge with regard to these activities. Effective execution of these three activities demands the use of design and educational models to obtain time proficiency, cost, and high educational quality. The use...
The video streaming service over Wireless Mesh Networks (WMNs) is an attractive feature for live streaming and video conversation when disaster occurs. The path construction with the conventional metrics e.g., throughput, latency, or packet loss rate, suffers from the repeated waiting time due to the CSMA/CA since paths are concentrated on nodes with good metric. As a consequence, it brings about...
With the development of Internet, the streaming media video content is increasingly rich. At present, Adobe's Secure Real-Time Media Flow Protocol (RTMFP) is widely used in video transmission. In order to improve the video transmission speed, RTMFP adopts P2P technology. P2P technology brings a new question about traffic locality. This paper is verified that the cross-domain traffic is more than the...
Streaming services are gaining popularity and have contributed a tremendous fraction of today's cellular network traffic. Both playback fluency and battery endurance are significant performance metrics for mobile streaming services. However, because of the unpredictable network condition and the loose coupling between upper layer streaming protocols and underlying network configurations, jointly optimizing...
Live TV production on IP networks is challenging, with real time delivery requirements and ever increasing bit rates. SDN and NFV could allow an integrated approach, where network resources are known and guaranteed. However, there are architecture and protocol issues still to overcome.
The question of how to best annotate affect within available content has been a milestone challenge for affective computing. Appropriate methods and tools addressing that question can provide better estimations of the ground truth which, in turn, may lead to more efficient affect detection and more reliable models of affect. This paper introduces a rank-based real-time annotation tool, we name AffectRank,...
Fiber channel (FC) based implementations have become a ubiquitous choice for most of the high-performance video multimedia storage networks and display units. FC is being considered a kind of communication architecture in the field of avionics for a variety of next generation aircrafts. However the challenge faced by designers is how to realize the complicated FC protocols implementation in a feasible...
Quality of Service (QoS) is imperative for multimedia real-time applications to ensure optimal use of the communication channels and deliver Video Conference (VC) with acceptable quality. Several algorithms have been proposed in the literature to optimize the use of the bandwidth when both VC and Internet browsing are operating at the same time. In this paper we apply three of these methods, Guaranteed...
A challenge in designing a peer-to-peer (P2P) system is to ensure that the system is able to tolerate selfish nodes that strategically deviate from their specification whenever doing so is convenient. In this paper, we propose RACOON, a framework for the design of P2P systems that are resilient to selfish behaviours. While most existing solutions target specific systems or types of selfishness, RACOON...
New emerging Internet applications allow users around the world to interact and share information very quickly. Multimedia consumers become as well producers of live or recorded Internet multimedia content. On the other hand, with the advancement of mobile technologies, geo-location tools are becoming more integrated into everyday technology and services. This paper presents a new Live Video Streaming...
Hadoop is a popular open-source framework that allows distributed analysis of large datasets using the MapReduce programming model. A distributed file system HDFS is implemented to provide high-throughput access to datasets. HDFS can achieve high performance metadata service but has two disadvantages. First, when the metadata server stores metadata on persistent devices, it is restricted to read and...
Software-Defined Network (SDN) is an emerging network paradigm which enables flexible network management by separating control plane from data plane. Since SDN adopts a centralized management scheme, with large scale SDN network, it brings intensive overhead to control plane. One way of limiting this overhead is to either distribute the overhead to multiple controllers, or offload the overhead to...
The existing in-vehicle networks are not capable of accommodating increased data in vehicle and the demand of bandwidth. Next generation networks require higher bandwidth and shorter latency. Therefore, inexpensive and high bandwidth ethernet have be studied. IEEE802.1 Audio Video Bridging (AVB) is the standard used to transmit Audio and Video streaming data with guaranteed Quality of Service (QoS)...
We investigated the performance of the IEEE 802.1AS time synchronization protocol and its usage in in-vehicle networks by assessing the precise time synchronization mechanisms, such as offset correction, rate correction and the automatic optimal sync message period. In particular, this paper presents a method for adjusting the optimal synchronization message period to achieve high-precision time synchronization...
Video-streaming traffic has been the majority traffic over the Internet in recent years and TCP-Friendly Rate Control (TFRC) is the most promising protocol to load it. However, TFRC is unable to detect network fluctuation timely in a short time scale. This weakness results in decrease of Quality of Service (QoS) and TCP friendliness. In this paper, we propose an enhanced TFRC Control algorithm based...
Real-time interactive communications have become critical for business, e-commerce, e-government and education. Teleconferencing systems have been usually deployed using proprietary and expensive systems. Overlay networks are often used to support multi-point teleconferencing and provide services unavailable in the underlying physical networks. With the advent of WebRTC, real-time communication applications...
A real-time multimedia transmission requires the QoS guarantees to preserve the real-time character of the stream. Nowadays, we have several methods for QoS provisioning in IP networks. In this paper we propose a novel method for dynamic network resource allocation using the IP Traffic Flow Description option. Our solution deals with the problem of the trade-off between link utilization and the quality...
We present a content-based caching architecture for scalable MMT video delivery. Our architecture places a caching proxy in the path between an MMT server and its clients. Between an MMT server and a caching proxy, we exploit the popular HTTP protocol to reliably synchronize the video contents by their fragments while the caching proxy delivers the MMT asset to the clients via the standard MMTP protocol...
With the rapid growth of the Internet, traditional broadcasters are under severe pressure from their competitors. In order to enhance their competitiveness, broadcasters need to provide not only traditional linear broadcast services but also new tri-play services. Traditional terrestrial broadcast systems need to be upgraded to next generation broadcast wireless (NGB-W) systems, where terrestrial...
Within the growing of the gaming industry and mobile technologies, cloud-based video games streaming to mobile devices gains popularity fast. However, several issues and challenges such as user responsiveness, video quality, service quality, operating cost and energy consumption have to be addressed. Previous research studies did not thoroughly investigate the energy consumption of mobile devices...
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