Simulation And Enhancement Of Http Based Video Services With Adaptive Streaming Over Wireless Networks
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Simulation and Enhancement of HTTP-based Video Services with Adaptive Streaming Over Wireless Networks
With the development of the Internet and mobile networks, video service in mobile devices has gained growing popularity. Guaranteeing a decent video service quality is, however, still quite challenging in wireless networks, due to the unstable features of radio channels. In this thesis, we investigate simulation and enhancement of video services based on the hypertext transfer protocol (HTTP) with adaptive streaming over wireless networks. Firstly, we implement a video service simulator to explore video quality monitoring and collection of performance metrics during content delivery. Then, we further propose a caching-based bitrate adaptation scheme for the purpose of video service quality enhancement. Instead of focusing on the traditional quality of service (QoS), we use a quality of experience (QoE) model for video performance evaluation. A series of experiments are conducted to assess the performance of our proposed bitrate adaptation scheme and compare it with several existing representative adaptation schemes. Experiments demonstrate that our proposed adaptation scheme outperforms the reference schemes by achieving higher mean opinion scores (MOS) as the QoE measure in a variety of network conditions.
Simulation Tools and Techniques
This two-volume set constitutes the refereed post-conference proceedings of the 12th International Conference on Simulation Tools and Techniques, SIMUTools 2020, held in Guiyang, China, in August 2020. Due to COVID-19 pandemic the conference was held virtually. The 125 revised full papers were carefully selected from 354 submissions. The papers focus on simulation methods, simulation techniques, simulation software, simulation performance, modeling formalisms, simulation verification and widely used frameworks.
MOBIMEDIA 2020
Author: Lin Yun
language: en
Publisher: European Alliance for Innovation
Release Date: 2020-11-19
We are delighted to introduce the proceedings of the 13th edition of the 2020 European Alliance for Innovation (EAI) International Conference on Mobile Multimedia Communications (MOBIMEDIA). This conference has brought researchers, developers and practitioners around the world who are leveraging and developing multimedia coding, mobile communications and networking fields. Developing and leveraging multimedia coding, mobile communications and networking fields requires adopting an interdisciplinary approach where multimedia, networking and physical layer issues are addressed jointly. Basic theories, key technologies and Artificial Intelligence for next-generations wireless communications，intelligent technologies for subspace learning and clustering of high-dimensional data, security and safety, communication networks and coding analysis, electromagnetic and media access control, D2D and IoT, multimedia platform and analysis, new energy and smart city, vision and images analysis, systems and applications, case studies and prediction and educational application are research challenges that need to be carefully examined when designing new mobile media architectures. We also need to put a great effort in designing applications that take into account the way the user perceives the overall quality of the provided service. Within this scope, the MOBIMEDIA 2020 was intended to provide a unique international forum for researchers from industry and academia to study new technologies, applications and standards. Original unpublished contributions are solicited that can improve the knowledge and practice in the integrated design of efficient technologies and the relevant provision of advanced mobile multimedia applications.