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Quality-Based Content Delivery over the Internet

Quality-Based Content Delivery over the Internet
Author: Xiang Li
Publisher: Springer Science & Business Media
Total Pages: 144
Release: 2011-12-28
Genre: Computers
ISBN: 3642191460
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"Quality-Based Content Delivery over the Internet" mainly discusses the methodology of doing quality-based content delivery in an Internet environment. Because the network is becoming intelligent and active, more and more researchers are talking about achieving personalization and customization in Internet content delivery. As researchers are aware, by introducing intelligence into a web intermediary server, they can make the content delivery more efficient and of higher quality. Still, the detailed methodology of doing so is never illustrated fully. The most critical part will be the active content transformation model. This book gives a detailed description of the active content transformation model, and provides experiments and data to show its feasibility. Some examples of how to do efficient content transformation in active web intermediary to achieve high quality are also presented to help understand the whole process. The book is an introduction and excellent reference for researchers in the Internet content delivery area. Dr. Xiang Li is an associate professor at Shanghai Jiao Tong University and the vice director of “National Research Lab of Content Analysis”, China; Dr. Jianhua Li is a professor at the same university and the director of the same lab.

Content Delivery Networks

Content Delivery Networks
Author: Dom Robinson
Publisher: John Wiley & Sons
Total Pages: 254
Release: 2017-06-20
Genre: Computers
ISBN: 1119249880
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The definitive guide to developing robust content delivery networks This book examines the real-world engineering challenges of developing robust content delivery networks (CDNs) and provides the tools required to overcome those challenges and to ensure high-quality content delivery that fully satisfies operators’ and consumers' commercial objectives. It is informed by the author’s two decades of experience building and delivering large, mission-critical live video, webcasts, and radio streaming, online and over private IP networks. Following an overview of the field, the book cuts to the chase with in-depth discussions—laced with good-natured humor—of a wide range of design considerations for different network topologies. It begins with a description of the author's own requirement filtration processes. From there it moves on to initial sketches, through considerations of stakeholder roles and responsibilities, to the complex challenges of managing change in established teams. Agile versus waterfall considerations within large blue chip companies, security, commercial models, and value chain alignment are explored in detail. Featured throughout the book are numerous "what if" scenarios that help provide a clear picture of the wide spectrum of practical contexts for which readers may be tasked with building and implementing a CDN. In addition, the book: Discusses delivery of live, catch-up, scheduled on-demand, TVOD and SVOD Offers insights into the decisions that can to be made when architecting a content distribution system over IP-based networks Covers CDN topologies, including Edge-Caching, Streaming-Splitting, Pure-Play, Operator, Satellite, and Hybrid Examines computer hosting and orchestration for dedicated appliances and virtualization Includes real-world cases covering everything from IETF, regulatory considerations, and policy formation, to coding, hardware vendors, and network operators Considers the future of CDN technologies and the market forces driving its evolution Written by a back-room engineer for back-room engineers, Content Delivery Networks gets readers up to speed on the real-world challenges they can face as well as tried-and-true strategies for addressing those challenges in order to ensure the delivery of the high-quality content delivery networks that clients demand and users expect.

Quality of Experience for Multimedia

Quality of Experience for Multimedia
Author: Abdelhamid Mellouk
Publisher: John Wiley & Sons
Total Pages: 180
Release: 2013-11-25
Genre: Technology & Engineering
ISBN: 1848215630
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Based on a convergence of network technologies, the Next Generation Network (NGN) is being deployed to carry high quality video and voice data. In fact, the convergence of network technologies has been driven by the converging needs of end-users. The perceived end-to-end quality is one of the main goals required by users that must be guaranteed by the network operators and the Internet Service Providers, through manufacturer equipment. This is referred to as the notion of Quality of Experience (QoE) and is becoming commonly used to represent user perception. The QoE is not a technical metric, but rather a concept consisting of all elements of a user's perception of the network services. The authors of this book focus on the idea of how to integrate the QoE into a control-command chain in order to construct an adaptive network system. More precisely, in the context of Content-Oriented Networks used to redesign the current Internet architecture to accommodate content-oriented applications and services, they aim to describe an end-to-end QoE model applied to a Content Distribution Network architecture. About the Authors Abdelhamid Mellouk is Full Professor at University of Paris-Est C-VdM (UPEC), Networks & Telecommunications (N&T) Department and LiSSi Laboratory, France. Head of several executive national and international positions, he was the founder of the Network Control Research activity at UPEC with extensive international academic and industrial collaborations. His general area of research is in adaptive real-time control for high-speed new generation dynamic wired/wireless networks in order to maintain acceptable Quality of Service/Experience for added-value services. He is an active member of the IEEE Communications Society and has held several offices including leadership positions in IEEE Communications Society Technical Committees. Said Hoceini is Associate Professor at University of Paris-Est C-VdM (UPEC), Networks & Telecommunications (N&T) Department and LiSSi Laboratory, France. His research focuses on routing algorithms, quality of service, quality of experience, and wireless sensor networks, as well as bio-inspired artificial intelligence approaches. His work has been published in several international conferences and journals and he serves on several TPCs. Hai Anh Tran is Associate Professor at the Hanoi University of Science and Technology (HUST), Vietnam. His research focuses on QoE aspects, QoS adaptive control/command mechanisms, wired routing, as well as bio-inspired artificial intelligence approaches.

Web Content Delivery

Web Content Delivery
Author: Xueyan Tang
Publisher: Springer Science & Business Media
Total Pages: 388
Release: 2006-01-17
Genre: Computers
ISBN: 0387277277
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The concept of content delivery (also known as content distribution) is be coming increasingly important due to rapidly growing demands for efficient distribution and fast access of information in the Internet. Content delivery is very broad and comprehensive in that the contents for distribution cover a wide range of types with significantly different characteristics and performance concerns, including HTML documents, images, multimedia streams, database tables, and dynamically generated contents. Moreover, to facilitate ubiqui tous information access, the network architectures and hardware devices also vary widely. They range from broadband wired/fixed networks to bandwid- constrained wireless/mobile networks, and from powerful workstations/PCs to personal digital assistants (PDAs) and cellular phones with limited processing and display capabilities. All these levels of diversity are introducing numerous challenges on content delivery technologies. It is desirable to deliver contents in their best quality based on the nature of the contents, network connections and client devices. This book aims at providing a snapshot of the state-of-the-art research and development activities on web content delivery and laying the foundations for future web applications. The book focuses on four main areas: (1) web con tent delivery; (2) dynamic web content; (3) streaming media delivery; and (4) ubiquitous web access. It consists of 17 chapters written by leading experts in the field. The book is designed for a professional audience including academic researchers and industrial practitioners who are interested in the most recent research and development activities on web content delivery.

Introduction to Content Delivery Networks (CDN)

Introduction to Content Delivery Networks (CDN)
Author: Shehan Marasinghe
Publisher:
Total Pages: 0
Release: 2020-07
Genre: Computers
ISBN:
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The fast loading websites always score more audience and sales in the modern internet edge. Content Delivery Networks (CDN) enhance web performance by reducing the web page load time for the web visitors and reducing the traffic load to the origin web server. A CDN is a globally distributed content cache that delivers the content from the closest server location to the visitor.

New Approaches to Improving Live Video Delivery Over Content Delivery Networks

New Approaches to Improving Live Video Delivery Over Content Delivery Networks
Author: Huan Wang
Publisher:
Total Pages:
Release: 2020
Genre:
ISBN:
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The live streaming services have gained extreme popularity in recent years. The spiky traffic, as well as the real-time property of live videos, make it challenging for content delivery networks (CDNs) to guarantee the Quality-of-Experiences (QoE) of viewers. The caching and delivery mechanism of live videos over the current CDN architecture has its limitation since the current CDNs are not designed for live videos in the rst place. As a result, it may lead to deteriorated QoE to the end viewers such as long startup latency. In this dissertation, with the help of CDN edge servers, we focus on the QoE improvement solutions of three problems in live video delivery, covering the research elds of i) multi-CDN content delivery, ii) QoE optimization of HTTP-based live video delivery, and iii) live video replication over edge CDN servers. First, in order to improve the content delivery performance under current multi-CDN strategies, we propose a feasible and efficient solution to multi-CDN, termed as CDN semi-federation. Compared with a full multi-CDN federation, CDN semi-federation can better schedule and utilize the resources from multiple CDNs without requiring full CDN interconnection (CDNI), which poses signi cant technical obstacles not easy to solve in the short term. The semi-federation model requires an authoritative and trusted third-party consortium formed by voluntary CDN vendors,who need to disclose their dynamic information (e.g., PoP footprints and service capabilities) to the consortium. The authoritative consortium adopts a centralized control to provide traffic delivery guidance to CDNs by leveraging the resources from multiple CDNs and reshaping the traffic demand assigned to each CDN. Compared with CDNI, CDN semi-federation: i) releases the CDN vendors from the complex technical and business obstacles of interconnecting with multiple CDNs, and ii) avoids the sub-optimal content delivery decisions made by distributed CDNs. Second, to optimize the QoE of HTTP-based live video delivery over CDN edge servers, we propose a reinforcement learning-based dynamic IVS selection scheme (Rldish) deployed on edge CDN server to dynamically select a suitable initial video segment (IVS) of a live streaming. Rldish uses a real-time exploration and exploitation (E2) model to learn the IVS selection automatically, and is deployed as a virtual network function (VNF) on the CDN edge server by the CDN operator. Rldish makes the IVS decisions on a per-stream basis to avoid high overhead in per-user based throughput estimation. Since an edge CDN server generally serves its proximal end users, viewers accessing the same live video usually share the common video delivery path from the origin server to the edge and generally experience the similar network conditions when fetching the same video from the edge. Based on this observation, Rldish continuously updates the currently optimal decisions on IVS selection for the live viewers on a per-stream basis, based on the real-time QoE measurements and feedback. The decisions are then updated into the media playlist les of each stream for the subsequent live viewers. Third, to solve the cache miss problem in edge-assisted live video delivery, we propose a proactive live video edge replication scheme (PLVER). PLVER rst conducts a one-to-multiple stable allocation between edge clusters and user groups to balance the load of live requests over edge servers. In this way, each user group is assigned to its most preferred edge cluster whenever possible. Based on the allocation result, PLVER then proposes an e cient proactive live video edge replication (push) algorithm to speed up the edge replication process by using real-time statistical viewership of the user groups allocated to a cluster. We conduct extensive trace-driven evaluations, covering 0:3 million Twitch viewers and more than 300 Twitch channels. The results demonstrate that with PLVER, edge servers can carry 28% and 82% more traffic than the auction-based replication method and the caching on requested time method, respectively.

Optimize Video Streaming Delivery

Optimize Video Streaming Delivery
Author: Derek DeJonghe
Publisher:
Total Pages: 21
Release: 2021
Genre:
ISBN:
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Media content today is increasingly streamed video, and this trend will only grow as the speed of consumer internet and video quality improve. Traditional video streaming platforms, such as Netflix and Hulu, now account for only a portion of this content as more and more live events are streamed over the internet. And consumer-generated content on video-based social networks such as Twitch and TikTok is now more accessible and gaining popularity. This report focuses on the current state of video delivery, including the challenges content providers face and the various solutions they're pursuing. The findings in this report are based on a recent survey conducted by Edgecast, a content delivery network (CDN) that helps companies accelerate and deliver static and dynamic content to end users around the world. You'll explore: The current state of video streaming, how it works, and how streams are delivered Responses from a survey of CDN users that produce video streams How content providers are addressing recent video streaming challenges How the information in this report can help you identify KPIs.

Data Traffic Monitoring and Analysis

Data Traffic Monitoring and Analysis
Author: Ernst Biersack
Publisher: Springer
Total Pages: 370
Release: 2013-03-02
Genre: Computers
ISBN: 3642367844
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This book was prepared as the Final Publication of COST Action IC0703 "Data Traffic Monitoring and Analysis: theory, techniques, tools and applications for the future networks". It contains 14 chapters which demonstrate the results, quality,and the impact of European research in the field of TMA in line with the scientific objective of the Action. The book is structured into three parts: network and topology measurement and modelling, traffic classification and anomaly detection, quality of experience.

Quality-consciousness in Large-scale Content Distribution in the Internet

Quality-consciousness in Large-scale Content Distribution in the Internet
Author: Minaxi Gupta
Publisher:
Total Pages:
Release: 2004
Genre: Client/server computing
ISBN:
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Content distribution is the primary function of the Internet today. Technologies like multicast and peer-to-peer networks hold the potential to serve content to large populations in a scalable manner. While multicast provides an efficient transport mechanism for one-to-many and many-to-many delivery of data in an Internet environment, the peer-to-peer networks allow scalable content location and retrieval among large groups of users in the Internet. Incorporating quality-consciousness in these technologies is necessary to enhance the overall experience of clients. This dissertation focuses on the architectures and mechanisms to enhance multicast and peer-to-peer content distribution through quality-consciousness. In particular, the following aspects of quality-consciousness are addressed: 1) client latency, 2) service differentiation, and 3) content quality. Data analysis shows that the existing multicast scheduling algorithms behave unfairly when the access conditions for the popular files changes. They favor the popular files while penalizing the files whose access conditions have not changed. To maintain the client latency for all files under dynamic access conditions we develop a novel multicast scheduling algorithm that requires no change in server provisioning. Service differentiation is a desirable functionality for both multicast and peer-to-peer networks. For multicast, we design a scalable and low overhead service differentiation architecture. For peer-to-peer networks, we focus on a protocol to provide different levels of service to peers based on their contributions in the system. The ability to associate reliable reputations with peers in a peer-to-peer network is a useful feature of these networks. Reliable reputations can help establish trust in these networks and hence improve content quality. They can also be used as a substrate for a service differentiation scheme for these networks. This dissertation develops two methods of tracking peer reputations with varying degrees of reliability and overheads.

Information Networking: Wired Communications and Management

Information Networking: Wired Communications and Management
Author: Ilyoung Chong
Publisher: Springer
Total Pages: 734
Release: 2003-08-01
Genre: Computers
ISBN: 3540458034
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The papers comprising Vol. I and Vol. II were prepared for and presented at the International Conference on Information Networking 2002 (ICOIN 2002), which was held from January 30 to February 1, 2002 at Cheju Island, Korea. It was organized by the KISS (Korean Information Science Society) SIGIN in Korea, IPSJ SIG DPE (Distributed Processing Systems) in Japan, the ITRI (Industrial Technology Research Institute), and National Taiwan University in Taiwan. The papers were selected through two steps, refereeing and presentation review. We selected for the theme of the conference the motto “One World of Information Networking”. We did this because we believe that networking will transform the world into one zone, in spite of different ages, countries and societies. Networking is in the main stream of everyday life and affects directly millions of people around the world. We are in an era of tremendous excitement for professionals working in many aspects of the converging networking, information retailing, entertainment, and publishing companies. Ubiquitous communication and computing technologies are changing the world. Online communities, e commerce, e service, and distance learning are a few of the consequences of these technologies, and advanced networking will develop new applications and technologies with global impact. The goal is the creation of a world wide distributed computing system that connects people and appliances through wireless and high bandwidth wired channels with a backbone of computers that serve as databases and object servers. Thus, Vol.